JP5529696B2 - tire - Google Patents

Description

  The present invention can be a pneumatic tire or a solid tire having, for example, an annular color surface, for decoration, in which the surface of the side portion of the tire is colored differently from the ground color of the tire side portion. The present invention relates to a tire, and in particular, proposes a technique for preventing the occurrence of damage to the color surface due to rubbing or the like and exerting the decoration function as expected over a long period of time on the color surface.

  In order to give a decorative aesthetic to a tire, it has been widely used to provide a color surface with various colors on the side surface of the tire. Such a color surface is, for example, a colored rubber. It can be formed by printing, painting to which a paint is applied, or an attached sticker.

  By the way, when the tire rolls, the surface of the side portion of the tire may be rubbed with a curb or the like, and for this reason, for example, a color surface made of colored rubber, printing, etc., is worn on the color surface itself. In addition, since there is a risk of peeling on the color surface formed of the sticker that is stuck, the tire may be unable to fully exhibit the desired decorativeness for a long period of time.

  The present invention has an object to solve such problems of the prior art, and the object of the invention is the load rolling of the tire, the collar surface provided on the side surface, An object of the present invention is to provide a tire capable of preventing the occurrence of damage to the color surface caused by rubbing due to a curb or the like and sufficiently exhibiting the decorativeness as expected for a long time on the color surface. .

The tire according to the present invention has a color surface extending around the tire axis line, which is colored differently from the ground color of the side part, preferably including white and black, on the surface of the side part of the tire. A plurality of protrusions projecting from the collar surface are provided at a distance from each other , each protrusion has a truncated cone shape, and the diameter of the tip surface of the protrusion is 1; it is intended to be set to be greater than or equal to .0mm.

Here, the protruding height of the protrusions preferred to a 0.4mm or more and 2.0mm or less arbitrary.

  By the way, it is preferable that the arrangement pitch of the other protrusion with respect to one adjacent protrusion is within 20 times the protruding height of the one protrusion.

  Preferably, a single groove extending over the entire circumference of the tire is formed on the surface of the side portion, and a collar surface is formed at least on the bottom surface of the groove.

  According to the tire of the present invention, even when the surface of the side portion having the collar surface is in contact with a curb stone or the like when the tire is loaded and rolled, the plurality of protrusions protruding from the collar surface are themselves, Since it functions to prevent the color surface from rubbing against the curb stone, etc. by rubbing with the curb stone, etc., it is possible to effectively prevent the occurrence of wear on the color surface, so the color surface on the side surface The decorativeness of the tire based on the provision of the tire can be exhibited without regret over a long period of time, and as a result, the commercial value of the product tire can be increased and sufficient differentiation from other tires can be achieved.

  Here, by coloring the color surface by printing, the construction can be made thinner and lighter than when colored rubber is used, and this can contribute to the reduction of the influence on other performances and the overall weight reduction.

Here, when the protrusion height of the protrusion is 0.4 mm or more and 2.0 mm or less, the protection function of the collar surface by the protrusion can be more effectively exhibited.
In other words, when the protruding height of the protruding portion is less than 0.4 mm, the protruding portion does not have a height sufficient to be rubbed by a curb stone at the expense of the collar surface. Even if the part is provided, damage to the collar surface may not be reliably prevented. On the other hand, if the protrusion height of the protrusion exceeds 2.0 mm, the protrusion height is too high. For example, if the diameter is about 1.0 mm, the height falls down, so the height does not make sense, and if the diameter is increased so as not to fall down, the presence itself may interfere with the color surface. .

In addition, when each protrusion has a truncated cone shape, and the diameter of the tip surface of the protrusion is 1.0 mm or more, the protection function of the collar surface by the protrusion can be greatly enhanced.
That is, when the diameter of the tip surface of the truncated cone-shaped protrusion is less than 1.0 mm, the rigidity of the tip of the protrusion is too small because the tip of the protrusion is too thin. Depending on the protrusions that are easily deformed by contact with a curb or the like, the collar surface may not be effectively prevented from coming into contact with the curb or the like, and hence the occurrence of damage to the collar surface.
Moreover, by making the shape of the projection part a frustoconical shape, it becomes difficult to peel off and the tip is thin, so that the appearance of erosion can be kept small.

By the way, the interval between the other protrusions with respect to one of the adjacent protrusions is within 20 times the protrusion height of the one protrusion, so that the color surface region existing between the protrusions can be reduced. Contact with a curbstone etc. can be prevented more effectively.
For example, when all of the protrusions have the same protrusion height, when the protrusions come into contact with a flat surface such as a curb stone, the elastic portion constituting the outer surface of the tire, for example, along with the protrusions, When the distance between the other protrusion is more than 20 times the protrusion height of one protrusion, the one protrusion is As a result, the distance from the other protrusion is too far away from the protrusion height, and contact between the adjacent protrusions and the curb stones occurs. As a result, the color surface cannot be protected sufficiently effectively.

  Here, when a single groove is formed on the surface of the side portion over the entire circumference of the tire and a collar surface is formed at least on the bottom surface of the groove, the collar surface is located inward of the side portion. In other words, the contact of the collar surface with the curbstone and the like is more effectively prevented by both the grooved land portion and the protruding portion of the side portion, so that the effect of preventing the occurrence of damage to the collar surface is further increased. Will increase.

It is a side view showing one embodiment of this invention. It is a partial expanded side view which expands and shows the principal part of FIG. It is sectional drawing which follows the III-III line of FIG. It is a schematic perspective view which expands and shows the projection part of the tire of FIG.

Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a tire side portion including a sidewall portion and a bead portion of a pneumatic tire. The pneumatic tire according to the embodiment has a ground color of the side portion 1 on the tire side portion 1. Here, it has an annular color surface 2 which is colored differently from the above, and extends around the entire circumference of the tire.
Although not shown in the figure, one or a plurality of the collar surfaces 2 may be provided on the surface of the side portion 1 only in a part around the tire axis.
The collar surface 2 is provided at least on the tire side portion 1 facing the outside of the vehicle when the tire is mounted on the vehicle.

  Here, the color surface 2 gives a decorative appearance to the tire and also makes the presence of the tire mounted on the vehicle stand out, and thus has a function of greatly increasing the consumer's willingness to purchase. Yes, depending on the needs of such customers, if the coloring applied to the color plane 2 is different from, for example, chromatic colors such as blue, red, yellow, etc., and the ground color of the side portion, white, black In addition to the gray achromatic color, it can be selected from a glossy color, a fluorescent color, and the like, and further, a combination of these colors can also be used.

  In manufacturing the tire, the color surface 2 is formed by disposing a so-called colored rubber material at a position corresponding to the side portion 1 of the molded green tire, and vulcanizing and molding the green tire. It can also be formed by attaching a seal to the side part 1 of the tire after vulcanization molding or by applying a paint, etc., but this has an effect on other performance. From the standpoint of reducing the overall weight and reducing the weight, it is preferable to form by printing.

  By the way, when the tire rolls, the tire side portion 1 may be rubbed against a side wall such as a curb existing on the road shoulder. In this case, the collar surface 2 provided on the tire side portion may be worn or worn. Since damage due to peeling of the seal occurs and the decorativeness of the tire by the collar surface 2 is remarkably impaired, in the present invention, a plurality of projections from the collar surface 2 as shown in the enlarged view of FIG. The protrusions 3 are provided at a predetermined interval from each other.

  According to this, when the tire side portion 1 comes into contact with a curb stone or the like when the tire rolls, the projection 3 protruding from the collar surface 2 rubs against the curb stone or the like instead of the collar surface 2, thereby Since the occurrence of damage to the surface 2 can be effectively prevented, the color surface 2 can sufficiently exhibit the decorativeness as expected and can increase the commercial value of the tire. .

Here, the shape of the protrusion 3 is a truncated cone shape as shown in FIGS. 2 and 3, but in addition to this, for example, other truncated cone shapes, truncated cones having various changes in the tip surface shape and the cross-sectional shape are used. Various shapes such as a shape and a column shape can be used as required.
However, it is preferable that the protrusion 3 has a truncated cone shape as shown in the drawing from the viewpoint of making it difficult to peel off and keeping the apparent erosion low.

Here, as illustrated in a schematic perspective view in FIG. 4, when the protrusion height H of the protrusion 3 from the collar surface 2 is 0.4 mm or more and 2.0 mm or less, The protective function of the color surface 2 against contact with a curbstone or the like can be exhibited effectively.
Moreover, the diameter of the front end surface of the protrusion 3 having a truncated cone shape as shown in the drawing is desired so that the protrusion 3 can overcome the pressing force from the curb or the like and prevent the curb or the like from contacting the collar surface 2. In order to ensure the rigidity of the tip, the thickness is preferably 1.0 mm or more.

  In addition, here, the protrusion 3 is arranged in such a manner that four rows of protrusions arranged at predetermined intervals in the tire circumferential direction are arranged in the tire radial direction as shown in FIGS. The arrangement of projections adjacent to each other in the direction is not limited to the arrangement pitch of the projections shifted by a half pitch, and various arrangement modes can be adopted, but as illustrated in FIG. For example, when the height of the protrusion is constant, the arrangement pitch P of the other protrusion 3b with respect to one adjacent protrusion 3a is within 20 times the protrusion height H of the one protrusion 3a. It is preferable to do.

  Thus, by setting the arrangement pitch P of the protrusions 3a and 3b to be within 20 times the protrusion height H, the protrusion 3a is elastically deformed by receiving a pressing force by a flat surface such as a curbstone. It is possible to secure a sufficiently large distance from the curb stone of the collar surface 2 and further effectively prevent the collar surface region located between the protrusions 3a and 3b from contacting the curb stone or the like.

  By the way, as shown in FIGS. 1-3, it is preferable to arrange | position the color | collar surface 2 at least in the bottom face of the groove | channel 4 formed in the side part 1 surface over the perimeter of a tire, According to this, Damage to the collar surface 2 can be more effectively protected from the curbstone and the like by the collar surface 2 located deep inside the groove 4 of the side portion by both the groove land portion 5 and the projection portion 3 of the side portion 1. Can be more effectively prevented.

  As described above, when the present invention is described by exemplifying a form applied to a pneumatic tire, for example, the pneumatic tire includes a carcass extending in a toroid form from a bead portion provided with a pair of bead cores, and The present invention can be applied to a solid solid tire in addition to a belt, a tread rubber, and the like disposed on the outer side in the tire radial direction of the carcass.

DESCRIPTION OF SYMBOLS 1 Tire side part 2 Collar surface 3 Protrusion part 4 groove 5 groove land land part H protrusion height P protrusion pitch

Claims (5)

A tire having a colored surface that extends around a tire axis on a surface of a side portion of the tire, and a plurality of protruding portions that protrude from the collar surface are spaced apart from each other on the collar surface. Hey is provided, tires each protrusion is a truncated cone shape, comprising projecting a diameter of the distal end surface of the raised portion is greater than or equal to 1.0 mm.   The tire according to claim 1, wherein the coloring of the color surface is performed by printing.   The tire according to claim 1 or 2, wherein the protrusion height of the protrusion is 0.4 mm or more and 2.0 mm or less. The tire according to any one of claims 1 to 3 , wherein an arrangement pitch of the other protrusions with respect to one of the adjacent protrusions is set to be within 20 times a protruding height of the one protrusion. The tire according to any one of claims 1 to 4 , wherein a single groove is formed on the surface of the side portion over the entire circumference of the tire, and a collar surface is formed at least on the bottom surface of the groove.