JP2009298329A - Component mounting body and pneumatic tire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a component mounting body capable of preventing a failure caused by air entering into a coating when mounting a component (RFID) in a leaf form, such as an RFID tag, on an internal surface of the pneumatic tire using a rubber-made coating, and a pneumatic tire equipped with the component mounting body. <P>SOLUTION: A component mounting body 70 for mounting an RFID 60 in the leaf form on the internal surface (inner liner 30) of the pneumatic tire includes a coating 71 that covers the RFID 60 disposed on the internal surface and adheres to the internal surface, and a thread shape section 72 disposed along the internal surface between the internal surface and the coating 71, wherein the thread shape section 72 has a configuration of a thread formed of a plurality of fibers twisted together, and at least one end 72A of the thread shape section 72 projects from the coating 71. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a component mounting body and a pneumatic tire for mounting a plate-like mounted component on an inner surface of a pneumatic tire.

  2. Description of the Related Art Conventionally, a method of attaching a plate-like attached component such as an RFID tag storing information (for example, a production lot) on a pneumatic tire to an inner surface of the pneumatic tire, for example, an inner surface of a tread portion is known. (See Patent Document 1).

Specifically, the RFID tag is attached to the inner surface of the tread portion by using a rubber patch (covering portion) that covers the RFID tag.
JP 2007-99052 A (6th page, FIG. 4)

  However, the conventional RFID tag mounting method described above has the following problems. Specifically, the internal pressure of a pneumatic tire mounted on a truck or bus or a pneumatic tire mounted on an aircraft is set higher than that of a pneumatic tire mounted on a passenger car or the like. For this reason, there is a problem in that air enters the inside of the patch through a gap between the rubber patch covering the RFID tag and the inner side surface of the tread portion, causing problems such as swelling and peeling of the patch.

  Therefore, the present invention has been made in view of such a situation, and in the case where a plate-like attached component such as an RFID tag is attached to the inner surface of a pneumatic tire using a rubber covering portion, An object of the present invention is to provide a component mounting body that can suppress the occurrence of problems caused by entering the inside of the covering portion, and a pneumatic tire including the component mounting body.

  In order to solve the above-described problems, the present invention has the following features. First, the first feature is a component mounting body (component mounting body 70) for mounting a plate-shaped mounted component (RFID 60) on the inner surface (inner liner 30) of a pneumatic tire (pneumatic tire 1). A covering portion (covering portion 71) that covers the mounted part disposed on the inner side surface and is fixed to the inner side surface, and a thread-like portion disposed along the inner side surface between the inner side surface and the covering portion. (Thread-like part 72), and the thread-like part has a thread-like shape in which a plurality of fibers are twisted, and at least one end part (one end part 72A) of the thread-like part protrudes from the covering part. .

  According to this feature, the thread-like part has a thread-like shape in which a plurality of fibers are twisted, and at least one end part of the thread-like part protrudes from the covering part. According to this, the air that has entered the inside of the covering portion, specifically, between the mounted part and the covering portion, is discharged from the gap between the filamentous portions (that is, the gap between the plurality of fibers). Accordingly, it is possible to suppress the occurrence of problems such as swelling and peeling of the covering portion. That is, in the case where a plate-like attached part such as an RFID tag is attached to the inner surface of the pneumatic tire using a rubber covering portion, it is possible to suppress the occurrence of problems due to air entering the inside of the covering portion.

  Another feature is that the thread-like portion protrudes from the outer edge portion (outer edge portion 71A) of the covering portion.

  Another feature is summarized in that one end portion and the other end portion (the other end portion 72B) of the thread-like portion protrude from the covering portion.

  Another feature is summarized in that the thread-like portion is disposed along a direction intersecting the longitudinal direction of the attached part.

  Other features include a reinforcing portion that is disposed on the outer side in the tire radial direction than the mounted part, and that is further fixed to the inner surface, and the covering portion is fixed to the inner surface via the reinforcing portion. However, the gist of the invention is that it is disposed at least either between the reinforcing part and the attached part or between the attached part and the covering part.

  Another feature is summarized in that the thread-like portion is formed of an organic fiber cord.

  Another feature is summarized in that the contact portion (contact portion 61) of the mounted part that comes into contact with the covering portion is formed of a synthetic resin.

  Another feature is summarized in that the pneumatic tire includes the component mounting body according to any one of claims 1 to 7.

  According to the present invention, when a plate-like attached part such as an RFID tag is attached to the inner side surface of a pneumatic tire using a rubber covering portion, troubles due to air entering the inside of the covering portion are prevented. A component mounting body that can be suppressed and a pneumatic tire including the component mounting body can be provided.

  Next, an example of a pneumatic tire according to the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals.

  However, it should be noted that the drawings are schematic and ratios of dimensions are different from actual ones. Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings is contained.

(Composition of pneumatic tire)
First, the configuration of the pneumatic tire according to the present embodiment will be described with reference to the drawings. FIG. 1 is a partial cross-sectional view showing a pneumatic tire according to the present embodiment. Note that the pneumatic tire according to the present embodiment is a heavy duty tire such as a pneumatic tire mounted on a truck or a bus or a pneumatic tire mounted on an aircraft.

  As shown in FIG. 1, the pneumatic tire 1 includes a bead portion 10 that contacts a rim (not shown) and a carcass layer 20 that forms a skeleton of the pneumatic tire 1.

  Inside the carcass layer 20 is provided an inner liner 30 which is a highly airtight rubber layer corresponding to a tube. A tread portion 40 in contact with the road surface is provided on the outer side of the carcass layer 20 in the tire radial direction.

  A plurality of belt layers 50 that reinforce the tread portion 40 are provided between the carcass layer 20 and the tread portion 40. A plate-like RFID 60 is attached by a component attachment body 70 on the inner side in the tire radial direction of the tread portion 40 (inner liner 30) (that is, the inner side surface of the pneumatic tire 1).

(Configuration of RFID and component mounting body)
Next, the configuration of the RFID 60 and the component mounting body 70 described above will be described with reference to the drawings. FIG. 2 is an exploded perspective view showing the RFID and the component mounting body according to the present embodiment, and FIG. 3 is a cross-sectional view showing the RFID and the component mounting body according to the present embodiment.

  As shown in FIGS. 2 and 3, the RFID 60 is disposed on the inner side surface (that is, the inner liner 30) of the pneumatic tire 1. The RFID 60 is an RFID tag in which information (for example, name, date of manufacture, serial number, production lot) regarding a pneumatic tire is stored.

  The component mounting body 70 includes a cover 71 fixed to the inner surface (that is, the inner liner 30), a thread-like portion 72 disposed along the inner surface between the inner surface and the cover 71, and an RFID 60. And a reinforcing portion 73 disposed on the inner side in the tire radial direction.

  The covering portion 71 covers the RFID 60 disposed on the inner side surface of the pneumatic tire 1 (that is, the inner liner 30). Specifically, the covering portion 71 covers the RFID 60 toward the inner surface, and is fixed to the one surface 73 </ b> A of the reinforcing portion 73. Thereby, the covering portion 71 is fixed to the inner side surface of the pneumatic tire 1 via the reinforcing portion 73.

  The covering portion 71 is made of a rubber material. For example, the covering portion 71 is made of ethylene propylene diene monomer rubber (EPDM), natural rubber, a mixture of neoprene rubber and natural rubber, a mixture of chlorobutyl rubber and natural rubber, a mixture of styrene butadiene rubber (SBR) and natural rubber, butadiene rubber ( BR) and a mixture of Tennobu rubber.

  The thread-like portion 72 has a thread-like shape in which a plurality of fibers are twisted. The thread portion 72 protrudes from the outer edge portion 71 </ b> A of the covering portion 71. One end 72 </ b> A and the other end 72 </ b> B of the thread-like portion 72 protrude from the covering portion 71.

  Specifically, the filament 72 is disposed along a direction that intersects the longitudinal direction of the RFID 60. The thread-like portion 72 is disposed between the reinforcing portion 73 and the RFID 60 and between the RFID 60 and the covering portion 71. Note that the thread-like portion 72 is not necessarily disposed between the reinforcing portion 73 and the RFID 60 and between the RFID 60 and the covering portion 71, but between the reinforcing portion 73 and the RFID 60, and between the RFID 60 and the covering portion 71. Or at least one of the inner side surface of the pneumatic tire 1 (that is, the inner liner 30) and the reinforcing portion 73.

  The thread-like portion 72 is formed of an organic fiber cord. For example, the thread-like portion 72 is formed of a cord such as nylon, aromatic polyamide fiber, fatty acid polyamide fiber, polyester fiber, polyparaphenylenebenzeneoxazole fiber, polyvinyl alcohol-based synthetic fiber, or carbon fiber.

  The reinforcing portion 73 is disposed between the inner surface of the pneumatic tire 1 (that is, the inner liner 30) and the RFID 60. Specifically, one surface 73A of the reinforcing portion 73 is fixed to the covering portion 71 that covers the RFID 60 toward the inner surface. On the other hand, the other surface 73 </ b> B of the reinforcing portion 73 is fixed to the inner surface of the pneumatic tire 1.

  The reinforcing part 73 is formed of a rubber material. For example, the reinforcing portion 73 is made of ethylene propylene diene monomer rubber (EPDM), natural rubber, a mixture of neoprene rubber and natural rubber, a mixture of chlorobutyl rubber and natural rubber, a mixture of styrene butadiene rubber (SBR) and natural rubber, butadiene rubber ( BR) and a mixture of Tennobu rubber.

  Here, the contact portion 61 of the RFID 60 that comes into contact with the covering portion 71 is preferably formed of a synthetic resin. Note that only the contact portion 61 is not necessarily formed of synthetic resin, and the entire outer peripheral portion of the RFID 60 may be formed of synthetic resin.

(Fixing method of RFID 60 and component mounting body 70)
Next, a method for fixing the RFID 60 and the component mounting body 70 described above will be described with reference to the drawings. FIG. 4 is a view for explaining a method of fixing the RFID and the component mounting body according to the present embodiment.

  First, in step 10, the reinforcing part 73 is affixed on the inner surface of the raw tire. Specifically, the reinforcing portion 73 is attached to the inner side surface of the raw tire corresponding to the inner side in the tire radial direction of the inner liner 30 in the tread portion 40 of the pneumatic tire 1.

  Next, in step 20, the thread-like portion 72 is attached on the reinforcing portion 73 attached to the inner side surface of the raw tire in step 10. At this time, the thread-like portion 72 is attached along the direction intersecting the longitudinal direction of the RFID 60. Further, the thread-like portion 72 is pasted so as to protrude from the outer edge portion 71 </ b> A of the covering portion 71.

It should be noted that step 20 is not performed when the thread-like portion 72 is not disposed between the reinforcing portion 73 and the RFID 60.

  Next, in step 30, the RFID 60 is attached so as to cover the thread-like portion 72 on the reinforcing portion 73.

  Next, in step 40, the thread-like portion 72 is attached on the RFID 60 attached on the reinforcing portion 73 in step 30. At this time, the thread-like portion 72 is attached along the direction intersecting the longitudinal direction of the RFID 60. Further, the thread-like portion 72 is pasted so as to protrude from the outer edge portion 71 </ b> A of the covering portion 71.

  It should be noted that if the filamentous portion 72 is not disposed between the RFID 60 and the covering portion 71, step 40 is not performed.

  Next, in step 50, the covering portion 71 is attached on the RFID 60 so as to cover the RFID 60 and the filamentous portion 72. Specifically, the covering portion 71 is attached so as to cover the RFID 60 and the portion other than the one end portion 72A and the other end portion 72B of the thread-like portion 72. That is, one end 72 </ b> A and the other end 72 </ b> B of the thread-like portion 72 protrude from the covering portion 71.

  Finally, in step 60, the green tire is pressed against the mold of the flow adding device by a bladder that inflates the green tire from the inner surface. And a raw tire, RFID60, and the component attachment body 70 are added. As a result, the RFID 60 and the component mounting body 70 are fixed to the inner surface of the pneumatic tire 1 formed from the raw tire.

  Accordingly, at the time of vortexing, the air that has entered the inside of the covering portion 71, specifically, between the reinforcing portion 73 and the RFID 60 and between the RFID 60 and the covering portion 71, becomes a gap (that is, a plurality of spaces). From the fiber gap).

(Action / Effect)
In the present embodiment described above, the thread portion 72 has a thread shape in which a plurality of fibers are twisted, and at least one end portion 72 </ b> A of the thread portion 72 protrudes from the covering portion 71. According to this, as shown in FIG. 5A and FIG. 5B, the air (A) that enters the inside of the covering portion 71, specifically, between the RFID 60 and the covering portion 71, The gas is discharged from 72 gaps (that is, gaps between a plurality of fibers). Accordingly, it is possible to suppress the occurrence of problems such as swelling and peeling of the covering portion 71.

  That is, in the case where a plate-like RFID such as an RFID tag is attached to the inner side surface of the pneumatic tire using the rubber covering portion 71, it is possible to suppress the occurrence of problems due to air entering the inside of the covering portion 71. This is particularly effective for pneumatic tires mounted on trucks, buses, etc., where the internal pressure is set high, and pneumatic tires mounted on aircraft.

  In the present embodiment, the thread portion 72 protrudes from the outer edge portion 71 </ b> A of the covering portion 71. According to this, compared with the case where the thread part 72 penetrates the coating | coated part 71 and protrudes from the coating | coated part 71, for example, a damage | wound (a hole etc.) does not vacate in the coating | coated part 71. Therefore, the shape of the covering portion 71 can be maintained, and the durability of the covering portion 71 (part mounting body 70) is improved.

  In the present embodiment, one end portion 72 </ b> A and the other end portion 72 </ b> B of the thread-like portion 72 protrude from the covering portion 71. According to this, in a pneumatic tire attached to a truck or a bus set with a high internal pressure or a pneumatic tire attached to an aircraft, air entering from one end 72A is discharged to the other end 72B. Accordingly, it is possible to suppress the occurrence of problems such as swelling and peeling between the RFID 60 and the covering portion 71.

  In the present embodiment, the thread-like portion 72 is disposed along the direction intersecting the longitudinal direction of the RFID 60. According to this, for example, as compared with the case where the filamentous portion 72 is disposed along the longitudinal direction of the RFID 60, the distance from which the air that has entered between the RFID 60 and the covering portion 71 is discharged becomes shorter. Accordingly, it is possible to suppress air from remaining between the RFID 60 and the covering portion 71.

  In the present embodiment, the RFID 60 includes the reinforcing portion 73. Therefore, the impact on the RFID 60 due to the deformation of the pneumatic tire 1 is absorbed. Furthermore, the thread-like portion 72 is disposed between the reinforcing portion 73 and the RFID 60 and between the RFID 60 and the covering portion 71. According to this, air that has entered between the reinforcing portion 73 and the RFID 60 and between the RFID 60 and the covering portion 71 is discharged from the gap between the thread-like portions 72. Therefore, it is possible to suppress the occurrence of problems such as swelling and peeling between the reinforcing portion 73 and the RFID 60 and between the RFID 60 and the covering portion 71.

  Furthermore, in this embodiment, the contact portion 61 of the RFID 60 that comes into contact with the covering portion 71 is formed of a synthetic resin. According to this, for example, the contact portion 61 of the RFID 60 is less likely to be deformed than when the contact portion 61 of the RFID 60 is formed of rubber. Therefore, the air that has entered between the RFID 60 and the covering portion 71 is easily discharged from the gap between the filamentous portions 72.

  Note that the RFID 60 may be adhered to the covering portion 71 with an adhesive or the like, and may of course be simply disposed between the covering portion 71 and the reinforcing portion 73 without being adhered to the covering portion 71. .

(Example of change)
The component mounting body 70 according to the above-described embodiment has been described as including the covering portion 71, the thread-like portion 72, and the reinforcing portion 73, but may be modified as follows. In addition, the same code | symbol is attached | subjected to the same part as the pneumatic tire 1 which concerns on embodiment mentioned above, and a different part is mainly demonstrated.

  FIG. 6 is a cross-sectional view showing an RFID and a component mounting body according to a modified example. As shown in FIG. 6, the component mounting body 70 includes a covering portion 71 and a thread-like portion 72. That is, the component mounting body 70 does not include the reinforcing portion 73.

  In this case, the thread-like portion 72 is disposed between the inner side surface of the pneumatic tire 1 (that is, the inner liner 30) and the RFID 60, and between the RFID 60 and the covering portion 71. The filament 72 is not necessarily disposed between the inner surface and the RFID 60 and between the RFID 60 and the cover 71. For example, as shown in FIG. You may arrange | position only between.

[Other embodiments]
As described above, the contents of the present invention have been disclosed through the embodiments of the present invention. However, it should not be understood that the description and drawings constituting a part of this disclosure limit the present invention.

  Specifically, the one end portion 72A and the other end portion 72B of the thread-like portion 72 have been described as projecting from the covering portion 71. However, the present invention is not limited to this, and at least one end portion of the thread-like portion 72 is covered with the covering portion 71. Needless to say, it protrudes from the center.

  In addition, although the thread-like portion 72 has been described as being disposed along the direction intersecting the longitudinal direction of the RFID 60, the present invention is not limited to this, and for example, disposed along the longitudinal direction of the RFID 60. Also good.

  Moreover, although the thread-like part 72 was demonstrated as what protrudes from the outer edge part 71A of the coating | coated part 71, it is not limited to this, For example, it may penetrate the coating | coated part 71 and may protrude from the coating | coated part 71. .

  Moreover, although RFID60 and the component attachment body 70 demonstrated as what is fixed to the inner surface of the pneumatic tire 1 by being added, it is not limited to this. For example, when the RFID 60 and the component mounting body 70 are attached to a pneumatic tire that is already a product, the RFID 60 and the component attachment body 70 may be bonded to the inner surface of the pneumatic tire 1 with an adhesive, a vulcanized adhesive, or the like.

  In addition, although it has been described that the mounted part is the RFID 60 (RFID tag), the present invention is not limited to this. For example, the pneumatic pressure (internal pressure) or the internal temperature of the compressed air filled in the pneumatic tire 1 is not limited thereto. Of course, it may be a sensor for measuring wear or the like, or a transmitter (antenna) for transmitting the measurement result to the vehicle side by wireless communication.

  Further, the pneumatic tire 1 has been described as being a heavy duty tire such as a pneumatic tire mounted on a truck or a bus or a pneumatic tire mounted on an aircraft, but is not limited thereto. For example, it may of course be a tire for a passenger car, a tire for a small truck, a tire for a construction vehicle, or the like.

  From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

It is a partial sectional view showing the pneumatic tire concerning this embodiment. It is a disassembled perspective view which shows RFID and a component attachment body which concern on this embodiment. It is sectional drawing which shows RFID and a component attachment body which concern on this embodiment. It is a figure for demonstrating the adhering method of RFID and a component attachment body which concerns on this embodiment. It is a perspective view which shows RFID and a component attachment body for demonstrating an effect | action and an effect. It is sectional drawing which shows RFID and a component attachment body which concern on the example of a change (the 1). It is sectional drawing which shows RFID and the component attachment body which concern on the example of a change (the 2).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Pneumatic tire, 10 ... Bead part, 20 ... Carcass layer, 30 ... Inner liner (inner surface), 40 ... Tread part, 50 ... Belt layer, 60 ... RFID (attached part), 61 ... Contact part, 70 ... part mounting body, 71 ... covering part, 71A ... outer edge part, 72 ... thread-like part, 72A ... one end part, 72B ... other end part, 73 ... reinforcing part, 73A ... one side, 73B ... other side

Claims (8)

A component mounting body for mounting a plate-shaped mounted component to the inner surface of a pneumatic tire,
Covering the attached component disposed on the inner surface, and a covering portion fixed to the inner surface;
Between the inner surface and the covering portion, provided with a thread-like portion disposed along the inner surface,
The thread-like part has a thread-like shape in which a plurality of fibers are twisted, and at least one end of the thread-like part projects from the covering part.   The component attachment body according to claim 1, wherein the thread-like portion protrudes from an outer edge portion of the covering portion.   The component attachment body according to claim 1, wherein the one end portion and the other end portion of the thread-like portion protrude from the covering portion.   The said thread-like part is a component attachment body as described in any one of Claim 1 thru | or 3 arrange | positioned along the direction which cross | intersects the longitudinal direction of the said to-be-attached component. The tire further includes a reinforcing portion that is disposed on the outer side in the tire radial direction than the attached component, and is fixed to the inner surface.
The covering portion is fixed to the inner surface via the reinforcing portion,
The said thread-like part is any one of Claim 1 thru | or 4 arrange | positioned in at least any one among the said reinforcement part and the said to-be-attached part, or between the said to-be-attached part and the said coating | coated part. The component mounting body according to one item.   The component attachment body according to any one of claims 1 to 5, wherein the thread-like portion is formed of an organic fiber cord.   The component attachment body according to any one of claims 1 to 6, wherein a contact portion of the attached component that comes into contact with the covering portion is formed of a synthetic resin.   A pneumatic tire provided with the component attachment body in any one of Claims 1 thru | or 7.

Images