JP2013230801A - Tire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tire enabling a user to freely apply a decoration or the like thereto by attaching a decorative member or the like thereto, and also capable of suppressing the falling of the decorative member or the like attached thereto.SOLUTION: A tire 1 includes, on at least one tire side section 15, a projecting portion 17 projecting toward a tire lateral outside. At least one pin hole 19 opened on the outer surface of the projecting portion 17 and extending from an opening portion 21 toward a tire radial outside, is formed.

Description

  The present invention relates to a tire capable of mounting a mounting member such as a decorative member and various sensors on a tire side portion.

  Conventionally, in order to decorate the tire side portion, ridges have been designed and arranged, characters are arranged, and coloring has been made (for example, see Patent Document 1).

JP 2008-273505 A

  However, the above-described conventional tire is preliminarily decorated, and the user cannot freely change the decoration.

  Therefore, the present invention provides a tire that allows a user to freely attach a decorative member or a measuring instrument such as a sensor, and can further prevent the attached member from falling off. With the goal.

  The present invention has been made in order to solve the above problems, and the tire according to the present invention includes, on at least one tire side portion, a protruding portion that protrudes outward in the tire width direction, and the outside of the protruding portion. At least one pin hole extending from the opening toward the outer side in the tire radial direction is formed while being open to the surface.

  In such a tire, it is possible to insert a measuring instrument such as a decorative member or a sensor by inserting it into the pin hole, and it is possible to suppress the falling off of the mounted decorative member or the like.

  Further, in such a tire, it is preferable that the pin hole is opened to the inside in the tire radial direction. According to this, the mounting member can be easily inserted into the pin hole, and the mounted member can be removed. It becomes possible to suppress more reliably.

  In such a tire, it is preferable that the angle formed by the extending direction of the pin hole and the tire equatorial plane is 15 ° or less when viewed in the cross section in the tire width direction. While facilitating insertion into the hole, it is possible to more reliably suppress the attached member from falling off.

  Further, in such a tire, when viewed from the tire side portion side, an angle formed by an imaginary line extending in the tire radial direction through the center of the opening of the pin hole and the extending direction of the pin hole is 20 ° or less. It is preferable to be present, and according to this, it is possible to more surely suppress the attached member from falling off.

  Further, in such a tire, the protrusion has a substantially flat flat outer surface, and the outer end in the tire radial direction of the flat outer surface is located on the inner side in the tire radial direction from the tire maximum width position. Preferably, according to this, even when the side wall portion comes into contact with the ground depending on the running conditions, it is possible to avoid grounding of the flat outer surface, and it is also possible to avoid damage to the pin hole and the attached member.

  In such a tire, the maximum thickness in the direction perpendicular to the carcass from the outer surface of the protrusion to the outer surface of the carcass is preferably 10 to 17 mm. Sufficient thickness of the protrusions for forming the holes can be secured to prevent the occurrence and development of cracks starting from the pin holes, and to prevent excessive weight increase of the tire .

  Further, in such a tire, it is preferable that the pin hole terminates in the projecting portion, and the depth of the pin hole is 5 to 15% of the tire cross-sectional height. Can be easily attached and detached, and a sufficient drop-suppressing effect can be obtained.

Further, in such a tire, the area of the pin hole as viewed from the inner side in the tire radial direction is preferably 1.6 to 15 mm ² , and according to this, the attachment member can be easily attached and detached, and the drop-off suppressing effect However, an excessive increase in tire weight can be prevented.

  Further, in such a tire, the maximum length in the tire circumferential direction of the shape of the pin hole viewed from the inner side in the tire radial direction is 1.5 to 5 times the maximum length in the tire width direction. Preferably, according to this, attachment / detachment of the mounting member can be facilitated, and the rotational movement of the mounted member can be suppressed to further enhance the drop-off suppressing effect. Here, “the shape of the pin hole as viewed from the inside in the tire radial direction” means that the opening of the pin hole is projected onto a plane perpendicular to the imaginary line passing through the center of the opening of the pin hole and extending in the tire radial direction. Refers to the shape.

  In addition, the tire of the present invention includes, on at least one tire side portion, a protruding portion that protrudes outward in the tire width direction, opens to the outer surface of the protruding portion, and from the opening toward the outer side in the tire radial direction. At least one pin hole extending is formed, and the pin hole has an insertion portion inserted into the pin hole and an exterior portion disposed on the outer side in the tire width direction of the protruding portion in a cross-sectional view in the tire width direction. The decorative member connected to is detachably inserted.

  In such a tire, there is provided a tire in which a user can freely attach a decorative member or a measuring instrument such as a sensor, and can further prevent the attached member from falling off. be able to.

  In addition, the various dimensions prescribed | regulated in this invention shall be measured in the no-load state which assembled | attached a tire to a regular rim, filled regular internal pressure, and did not load a load. “Regular rim” refers to the rim specified in the following standards according to the tire size, and “Regular internal pressure” corresponds to the maximum load capacity for the applicable size described in the following standards: It means the air pressure. The standard is an industrial standard effective in the region where tires are produced or used. For example, in Japan, it is “JATMA YEAR BOOK” of the Japan Automobile Tire Association, and in the United States “THE TIRE AND RIM ASSOCIATION INC.” "YEAR BOOK" from Europe, and "STANDARD MANUAL" from "The European Tire and Rim Technical Organization" in Europe.

  According to the present invention, it is possible to provide a tire in which a user can freely attach a decorative member or a measuring instrument such as a sensor, and can further prevent the attached member from falling off. Is possible.

1 is a cross-sectional view (half view) in the tire width direction showing a tire according to an embodiment of the present invention. (A) is a side view of the tire shown in FIG. 1, (b) is a side view which shows the tire of other embodiment. It is a figure which shows the shape of the pin hole of the tire shown in FIG. (A)-(d) is a figure which shows the pin hole shape of the tire of other embodiment. (A) is a figure which shows an example of the member for decoration used for this invention, (b) is a figure which shows the other example of the member for decoration used for this invention, (c) is a member for decoration It is a figure which illustrates the tire of the state which mounted | wore. (A) is the fragmentary sectional view which shows the tire of other embodiment of this invention, (b) is the fragmentary sectional view which shows the tire of further another embodiment of this invention, (c), It is a fragmentary sectional view showing a tire of further another embodiment of the present invention, and (d) is a fragmentary sectional view showing a tire of still another embodiment of the present invention. (A) is a partial sectional view showing a tire of comparative examples 1 and 2, and (b) is a partial sectional view showing a tire of comparative example 3. (A) is a perspective view which shows the member with which the tire of the comparative examples 1 and 2 is mounted | worn, (b) is a perspective view and side view which show the member with which the tire of the comparative example 3 is mounted | worn.

Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a tire width direction sectional view (half view) showing a state in which a tire 1 according to an embodiment of the present invention is assembled to a regular rim R, filled with a regular internal pressure, and no load is applied. The tire 1 includes a bead portion 5 in which a pair of bead cores 3 are embedded, a pair of sidewall portions 7 connected to the outside in the tire radial direction of the bead portion 5, and a tread portion 9 straddling the sidewall portions 7. A carcass 11 extending in a toroidal shape is provided across these parts. A belt 13 is disposed outside the crown portion of the carcass 11 in the tire radial direction. The carcass 11 is composed of at least one layer of radial ply or bias ply, and the belt 13 is composed of at least one layer of belt ply.

  As shown in the figure, a region including the sidewall portion 7 and the bead portion 5 of the tire 1 is defined as a tire side portion 15, and a protruding portion 17 protruding outward from the tire side portion 15 on one side in the tire width direction is provided. The protrusion 17 is formed and has a continuous shape over the entire circumference of the tire. The protruding portion 17 may be formed on only one of the tire side portions of the tire 1 or on both tire side portions. In addition, from the viewpoint of uniform weight and rigidity in the tire circumferential direction, the protrusion 17 is preferably a continuous shape over the entire circumference, but preferably a plurality of protrusions along the tire circumferential direction. It is also possible to have a shape arranged at equal intervals.

  The protrusion 17 has a substantially flat flat outer surface 17a. In this example, the flat outer surface 17a forms a flat surface parallel to the tire equatorial plane E. Further, a pin hole 19 is formed on the outer surface of the protrusion 17 so as to open toward the inner side in the tire radial direction. In this example, the pin hole 19 terminates inside the protruding portion 17, but penetrates the protruding portion 17 from the inner side in the tire radial direction to the outer side in the tire radial direction at a position away from the tire frame member such as the carcass 11. May be.

  As shown in FIG. 1, the pin hole 19 extends linearly from the opening 21 that opens to the inner side in the tire radial direction on the outer surface of the projecting portion 17 to the outer end in the tire radial direction from the terminal portion 23. Since the opening 21 is disposed on a surface that forms an angle close to perpendicular to the tire equator plane, it is difficult to visually recognize the pin hole 19 from the tire side portion side, and deterioration of appearance quality can be prevented. Further, the pin hole 19 may be curved in the extending direction. However, if the pin hole 19 has a shape extending linearly from the opening 21 to the terminal end 23, it is easy to manufacture and the decorative member or the like can be attached and detached. Since it becomes easy, it is preferable. In FIG. 1, the extending direction of the pin hole 19 is indicated by a virtual line A connecting the center 21 a of the opening 21 and the center 23 a of the terminal end 23. In this example, the extending direction A is parallel to the tire equatorial plane E, that is, parallel to the flat outer surface 17a.

  FIG. 2A shows a side view of the tire 1, and a plurality of pin holes 19 are formed at equal intervals in the protruding portion 17 having a continuous shape over the entire circumference in the tire circumferential direction. The arrangement intervals of the pin holes 19 are not necessarily equal intervals, and can be arranged at arbitrary intervals. In FIG. 2 (a), the pin hole 19 extends from the opening 21 along the tire radial direction. As shown in FIG. 2 (b), the extending direction A of the pin hole 19 The tire 19 may be inclined in the tire circumferential direction with respect to a virtual line B in the tire radial direction passing through the opening center 21a of the hole 19, and when this angle is θ, the inclination angle θ may be 20 ° or less. preferable. By being within such an angle range, it is possible to further enhance the effect of suppressing the falling off of the mounted member during traveling.

  FIG. 3 shows the shape of the opening of the pin hole 19 viewed from the inner side in the tire radial direction together with the sectional view in the tire width direction of the protrusion, and in this example, along the tire circumferential direction. The major axis is M1, and the minor axis is M2, which is the maximum length along the tire width direction. In addition, the shape of the pin hole 19 viewed from the inner side in the tire radial direction may be as shown in FIGS. FIG. 4A shows a circular shape having a diameter M1 (= M2). 4B is a rectangle with rounded corners, FIG. 4C is an ellipse with a major axis M1 and a minor axis M2, and FIG. 4D is a square with one side M1 (= M2). It is.

  FIG. 5A shows an example of a decorative member 30 to be attached to the pin hole 19. The decorative member 30 shown in the figure is connected by the connecting portion 36 so that the quadrangular prism-shaped insertion portion 32 and the exterior portion 34 that can decorate the outer surface are substantially parallel, and a cross section in the tire width direction when the tire is mounted It forms a U shape visually. Here, the shape of the decorative member 30 is not limited to the above shape, and may be a shape in which the insertion portion 32 and the exterior portion 34 are linearly connected. In addition, the insertion part 32, the exterior part 34, and the connection part 36 may be formed integrally, and what was formed separately may be combined. Further, as shown in FIG. 5B, a decorative part 38 or the like can be attached to the outer surface of the exterior portion 34.

  When the decoration member 30 is attached to the tire 1, the insertion portion 32 of the decoration member 30 is inserted into the pin hole 19 from the inner side in the tire radial direction to the outer side (the arrow direction in FIG. 5C). At this time, the insertion portion 32 has a slightly larger cross-sectional shape than the pin hole 19, and the inner wall surface 19a forming the pin hole 19 is elastically deformed in the direction in which the pin hole 19 expands. Therefore, the decorative member 30 is attached to the tire 1 by holding the insertion portion 32 inserted into the pin hole 19 by the restoring force of the inner wall surface 19 a of the pin hole 19. Further, the distance between the insertion portion 32 and the exterior portion 34 of the decorative member 30 shown in FIG. 5C is determined by the rubber thickness of the protruding portion positioned between the insertion portion 32 and the exterior portion 34 of the decorative member 30 when attached. By setting the same or shorter than this, the rubber between them is sandwiched and held by the insertion portion 32 and the exterior portion 34, and the effect of suppressing the falling off of the decorative member 30 can be further enhanced. As shown in FIG. 5 (c), the exterior portion 34 of the mounted decorative member 30 is disposed along the flat outer surface of the projecting portion 17 and is parallel to the tire equatorial plane. It will be excellent in visibility.

  In order to remove the decorative member 30 from the tire 1, it is only necessary to pull the insertion portion 32 from the pin hole 19 by pulling it with the exterior portion 34 or the connecting portion 36 and moving it in the direction opposite to the direction of attachment.

  In the tire 1 having the above-described configuration, the decoration member 30 can be easily attached to and detached from the pin hole 19, thereby allowing the user to freely decorate the tire. Further, since the direction of the centrifugal force generated by the rotation of the running tire is the direction from the opening 21 of the pin hole 19 to the terminal end 23, the decorative member 30 can be prevented from falling off.

  The angle α (see FIGS. 6A to 6D) formed by the extending direction A of the pin hole 19 and the tire equatorial plane E when viewed in the tire width direction cross section is preferably 15 ° or less, More preferably, the angle is 10 ° or less. The extending direction A of the pin hole 19 is not limited to the tire radial direction, and by setting the pin hole 19 within the above range, it is possible to prevent the decorative member from falling off when centrifugal force acting outward in the tire radial direction acts during traveling. be able to. If the angle α exceeds 15 °, the effect of suppressing dropout may be reduced.

  Further, as shown in FIG. 1, when the maximum tire width position in the tire radial direction of the tire 1 is Wmax, the outer radial end 17b of the flat outer surface 17a is located on the inner side in the tire radial direction from the maximum tire width position Wmax. According to this, even when the side wall portion 7 comes into contact with the ground depending on the running condition, the grounding of the flat outer surface 17a can be avoided, and the pin hole 19 can be damaged and inserted into the pin hole 19. It is also possible to avoid damage and dropout of the decorative member 30 to be attached.

  The maximum thickness t (see FIG. 1) in the direction perpendicular to the carcass from the outer surface of the protrusion 17 to the outer surface of the carcass 11 inside the tire is preferably 10 to 17 mm. If it is less than 10 mm, the thickness from the pin hole 19 to the outer surface is insufficient, and a crack starting from the pin hole 19 may occur and the crack may easily progress, and if it exceeds 17 mm, the weight increases. The rolling resistance of the tire 1 may increase.

  Further, the depth d of the pin hole 19, which is the distance from the opening center 21a of the pin hole 19 to the terminal center 23a, is preferably 5 to 15% of the tire cross-section height SH, and less than 3%. If it is, the insertion part 32 of the decorative member 30 is easy to come off, and if it exceeds 15%, the protruding part must be enlarged, so that the weight increases.

It is preferable that the area of the pin holes 19 as viewed from the inner side in the tire radial direction of the pin hole 19 is 1.6～15Mm ^2, is less than 1.6 mm ^2, the holding force is sufficiently in small mounting member surface area of the inner wall If it exceeds 15 mm ² , the volume increases in order to ensure the thickness of the protrusion 17 and the tire weight increases excessively.

  Further, the shape of the pin hole 19 viewed from the inner side in the tire radial direction is preferably a shape that is long in the tire circumferential direction (for example, a rectangle or an ellipse as shown in FIGS. 3, 4B, and 4C). According to this, it is possible to make the insertion portion 32 of the decorative member 30 difficult to rotate and stabilize compared to a circular shape. In addition, compared to a circular shape, the surface area of the inner wall surface 19a of the pin hole 19 is increased, the contact area between the insertion portion 32 and the pin hole inner wall 19a is increased, and the rubber member is compressed when the insertion portion 32 is inserted. Therefore, the decorative member 30 is more difficult to fall out of the pin hole 19. Furthermore, it is preferable that the major axis is 1.5 to 5 times the minor axis, and if it is less than 1.5 times, the rotation suppressing effect and the drop-off suppressing effect may not be sufficiently obtained. There is a risk of poor insertion and insufficient strength.

  Further, the flat outer surface 17a shown in FIG. 1 is preferably a flat surface or a curved surface having a curvature radius of 400 mm or more in a cross-sectional view in the tire width direction. According to this, the decorative member 30 is brought into contact with the flat outer surface 17a. It is easy to stabilize the arrangement, and there is an effect of suppressing the decorative member 30 from rotating around the insertion portion 32 during rotation. Further, the flat outer surface 17a is preferably parallel to the tire equator plane E or has an angle β (see FIG. 6C) with the tire equator plane of 20 ° or less. The effect of preventing the mounting member from dropping off due to centrifugal force can be further enhanced. Furthermore, the height h (see FIG. 1) of the flat outer surface 17a in the tire radial direction is preferably 13% to 30% of the tire cross-section height SH. According to this, the depth d of the pin hole 19 Can be secured sufficiently, and an area where the exterior portion 34 of the decorative member 30 contacts can be sufficiently secured, so that the mounted decorative member 30 can be stabilized. Also, an excessive weight increase can be avoided.

  Further, the interval between the pin holes 19 adjacent to each other in the tire circumferential direction is preferably 500% or more of the long diameter M1, which is the maximum length along the tire circumferential direction of the pin holes 19 viewed from the inside in the tire radial direction. Accordingly, it is possible to suppress the occurrence and progress of cracks in the tire side portion starting from the pin hole 19.

  Furthermore, from the viewpoint of ease of insertion and extraction, the extending direction A of the pin hole 19 is parallel to the flat outer surface, or 10 ° or less in a direction away from the flat outer surface from the pin hole opening toward the terminal end. It is preferable to make the angle. When the extending direction A of the pin hole 19 and the flat outer surface are in such a relationship, the decorative member 30 can be easily attached and removed.

  Further, when a convex portion is formed on the inner side surface of the exterior portion 34 of the decorative member 30, it is possible to provide a groove on the flat outer surface 17a so as to engage with the convex portion. In addition to acting as a guide, it is possible to suppress the displacement after mounting and enhance the effect of preventing the dropout. It is also possible to form minute irregularities by knurling for the purpose of improving the appearance.

  In the above-described embodiment, the example in which the decorative member 30 is inserted into the pin hole 19 and attached to the tire 1 is shown, but a measuring instrument such as a sensor is inserted into the pin hole 19 instead of the decorative member 30. It is also possible to measure tire temperature and running history. Moreover, it is possible to facilitate insertion of the decorative member by providing a tapered portion where the cross section of the pin hole expands in the vicinity of the opening of the pin hole.

  Next, a tire according to the present invention was prototyped and performance evaluation was performed, which will be described below. Both the tires of the comparative example and the example have a tire size of 195 / 65R15 91V.

  The tires of Comparative Examples 1 to 3 are each formed with a pin hole that opens to the flat outer surface of the protrusion and extends from the opening to the inner side in the tire width direction perpendicular to the tire equatorial plane. , 2 has the shape of the pin hole 41 shown in FIG. 7A, and Comparative Example 3 has the shape of the pin hole 41 having the weight portion 43 at the end portion as shown in FIG. 7B. Further, the members to be mounted on the tires of Comparative Examples 1 and 2 are, as shown in FIG. The decorative member 50 is constituted by a cylindrical insertion portion 52 having a length of 2.2 mm, a comparative example 1 having a length of 7 mm, and a comparative example 2 having a length of 4 mm. Further, as shown in FIG. 8 (b), the member to be mounted on the tire of Comparative Example 3 is a disk-shaped exterior portion 64 having a diameter of 20 mm, and extends vertically from the central portion, and has a diameter of 2.2 mm and a length of 4 mm. This is a decorative member 60 composed of an insertion portion 62 having a weight portion 66 (maximum diameter 4 mm) that engages with the weight portion 43 of the pin hole 41 at a cylindrical tip.

  As shown in FIG. 6A, the tires of Examples 1 to 7 open to the projecting portion 17 on the inner side in the tire radial direction, extend from the opening portion toward the outer side in the tire radial direction, and are tires with respect to the tire equatorial plane. A pin hole 19 inclined at an angle α is provided on the outer side in the width direction, and the shape of the pin hole 19 is shown in Table 1. The pin hole has a columnar shape that extends linearly from the opening without changing its cross-sectional shape. The pin hole depth d is expressed as an absolute value (mm) and a ratio (%) to the tire cross-section height. The protrusion has a flat outer surface parallel to the tire equatorial plane. As shown in FIG. 5A, the members to be mounted on the tires of Examples 1 to 7 have a structure in which the insertion portion 32 and the exterior portion 34 are connected in parallel, and the shape of the insertion portion 32 is a pin hole. Corresponds to the shape.

(Deterioration crack progress drum test)
Each tire is assembled to a regular rim (6J × 15), a valve core is attached, oxygen with a purity of 99% or more is filled to a filling pressure of 350 kPa, and then left in a constant temperature chamber at 60 ° C. for 7 days. In advance, oxygen was deteriorated. Thereafter, the filling pressure in the tire was filled up to 230 kPa, and the vehicle was run up to a running distance of 20,000 km at a test speed of 90 km / h at a load rate of 85% of the maximum load according to JATMA standards. After the test run, the presence or absence of circumferential cracks in the adjacent pin holes, cracks in the tire frame member, and cracks in the outer surface of the protruding portion was confirmed. The results are shown in Table 1.

  Each tire is assembled to a regular rim (6 J x 15), filled with regular internal pressure (230 kPa), and from a speed of 80 km / h to a maximum speed of 240 km / h at a load rate of 88% of the maximum load according to JATMA standards. Table 1 shows the results of measuring the speed when the decorative member attached to the pin hole is dropped from the tire by increasing the speed at 10 km / h every 30 minutes.

  From the test results in Table 1, the tires of the examples are less prone to cracking than the comparative example tires, the decorative members are less likely to fall off even at high speeds, and the decorative member can be easily removed and is lightweight. It can be seen that it is.

  Thus, according to the present invention, it is possible to provide a tire in which a user can freely attach a decorative member or a measuring instrument such as a sensor, and can further prevent the attached member from falling off. Became possible.

DESCRIPTION OF SYMBOLS 1 Tire 3 Bead core 5 Bead part 7 Side wall part 9 Tread part 11 Carcass 13 Belt 15 Tire side part 17 Projection part 19 Pin hole 21 Opening part 23 Termination part 30 Decoration member 32 Insertion part 34 Exterior part

Claims (10)

At least one tire side part is provided with a protruding part that protrudes outward in the tire width direction,
A tire having at least one pin hole formed in the outer surface of the projecting portion and extending outward from the opening in the tire radial direction.   The tire according to claim 1, wherein the pin hole is opened inward in the tire radial direction.   The tire according to claim 1 or 2, wherein the angle formed by the extending direction of the pin hole and the tire equatorial plane is 15 ° or less when viewed in a cross section in the tire width direction.   The angle formed by an imaginary line extending in the tire radial direction through the center of the opening of the pin hole and the extending direction of the pin hole when viewed from the tire side portion side is 20 ° or less. The tire according to claim 1.   The said protrusion part has a substantially flat flat outer surface, The tire radial direction outer end of this flat outer surface is located in a tire radial direction inner side rather than a tire maximum width position, The any one of Claims 1-4. The tire according to item.   The tire according to any one of claims 1 to 5, wherein a maximum thickness in a direction perpendicular to the carcass from an outer surface of the protruding portion to an outer surface of the carcass is 10 to 17 mm.   The tire according to any one of claims 1 to 6, wherein the pin hole terminates in the protruding portion, and the depth of the pin hole is 5 to 15% of the tire cross-sectional height. Wherein a tire radial area of the pin hole when viewed in the direction inside 1.6~15mm ^2, tire according to any one of claims 1 to 7.   The maximum length in the tire circumferential direction of the pin hole viewed from the inner side in the tire radial direction is 1.5 to 5 times the maximum length in the tire width direction. tire. At least one tire side part is provided with a protruding part that protrudes outward in the tire width direction,
At least one pin hole is formed in the outer surface of the protrusion and extending from the opening toward the outside in the tire radial direction,
A mounting member formed by connecting an insertion part inserted into the pin hole and an exterior part arranged on the outer side in the tire width direction of the projecting part to the pin hole in a tire-shaped cross-sectional view is detachable. A tire characterized by being inserted into a tire.

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