JP5066844B2 - Non pneumatic tire - Google Patents

Description

  The present invention relates to a non-pneumatic tire, and more particularly to a versatile non-pneumatic tire in which an existing wheel can be used as it is.

Conventionally, as a non-pneumatic tire, for example, a tire in which a large number of spokes are arranged radially between an annular outer ring and a hub has been proposed (see, for example, Patent Document 1). However, the conventionally proposed non-pneumatic tire requires a special wheel, and the existing wheel used in the current pneumatic tire cannot be used as it is, and there is a problem that it is inferior in versatility. .
Special Table 2005-500932 Publication

  The objective of this invention is providing the non-pneumatic tire which can use the existing wheel as it is.

  The non-pneumatic tire of the present invention that achieves the above object is provided between a pair of left and right annular rim mounting bodies that are detachably mounted on a rim, and left and right leg portions erected on the outer peripheral side of the left and right rim mounting bodies. A non-pneumatic tire provided with a ring-shaped tire main body formed by extending a grounding portion for grounding to a road surface, and a plurality of rim mounting body pieces obtained by dividing the left and right rim mounting bodies along the circumferential direction, respectively. The rim mounting body pieces of the left and right rim mounting bodies and the left and right leg portions are respectively fixed by fastening means.

  According to the present invention described above, after the rim mounting body piece is arranged on the rim of the existing wheel to form the rim mounting body, the non-pneumatic tire can be assembled on the rim by fixing the tire body to it. Therefore, the existing wheel can be used as it is, and a non-pneumatic tire having versatility can be provided.

  Further, when the tire body is damaged by a curb stone or the like, only the damaged tire body 4 needs to be replaced. Further, by making a split structure that can fix the rim mounting body and the tire body, the cross-sectional height and width can be reduced. Even if different tire bodies are used, there is an advantage that the same rim-mounted body can be used.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 and 2 show an embodiment of a non-pneumatic tire according to the present invention. The non-pneumatic tire includes a pair of left and right annular rim mounting bodies 1 that are detachably mounted on a rim R of a wheel W; An annular tire body 4 formed by extending a grounding portion 3 that contacts the road surface between the left and right leg portions 2 erected on the outer peripheral side of the left and right rim mounting bodies 1, The left and right leg portions 2 of the tire body 4 are connected and fixed by bolts (fastening means) B, respectively.

  As shown in FIG. 3, each rim mounting body 1 is composed of three rim mounting body pieces 5 (5A, 5B, 5C) divided into three in the circumferential direction, and each rim mounting body piece 5 is seated on the rim R. It comprises an arcuate rim sheet member 6 to be worn and an arcuate connecting member 7 arranged on the outer periphery thereof. The rim sheet member 6 is made of an elastic material made of rubber or resin. When the non-pneumatic tire is mounted on the rim R, the rim sheet member 6 is attached in a compressed state.

  The connecting member 7 is for fixing a fixing ring 10 of the leg 2 described later and the rim mounting body piece 5, and is integrally fixed to the outer peripheral surface of the rim sheet member 6. The outer peripheral surface 7a of the connecting member 7 in contact with the fixing ring 10 of the leg portion 2 is formed on an inclined surface located on the inner side in the tire radial direction as the inner side in the tire axial direction. Further, the outer peripheral surface 7a of the connecting member 7 is formed such that the outer peripheral surface 1a of the rim mounting body 1 has a polygonal shape when the rim mounting body 1 is configured by connecting the three rim mounting body pieces 5 in an annular shape. It bends and extends in a polygonal shape in the circumferential direction.

  The connecting member 7 is made of a hard material selected from rubber, resin, or metal. A plurality of through holes 8 through which the bolts B are inserted are provided on the side surface 7b of the connecting member 7 at predetermined intervals in the circumferential direction. Each through hole 8 is formed in an elliptical shape that is slightly longer in the radial direction in order to allow the rim mounting body piece 5 to be pushed and the connecting member 7 to move inward in the radial direction when the bolt is fastened. The through holes 8 are provided in at least three places in each connecting member 7.

  Both end portions 7 </ b> X of the connecting member 7 have wrap portions x that overlap with the connecting member 7 of the adjacent rim mounting body piece 5. Of the three rim mounting body pieces 5, one rim mounting body piece 5 </ b> A is configured such that the wrap portion x of both end portions 7 </ b> X of the connecting member 7 has a recess xa. The concave portion xa is formed so as to pass from the outer peripheral surface 7a of the connecting member 7 to the end surface 7n of the connecting member 7. The other rim mounting body piece 5B is configured such that a wrap portion x of one end portion 7Xa of the connecting member 7 is formed of a convex portion protruding in the circumferential direction from the rim sheet member 6, and a wrap portion of the other end portion 7Xb. x has the recessed part xa like the rim mounting | wearing body piece 5A.

  In the remaining one rim mounting body piece 5C, when the lap portion x of both end portions 7X of the connecting member 7 is formed of a convex portion protruding in the circumferential direction from the rim sheet member 6, the rim mounting body piece 5 is arranged in an annular shape. The rim mounting body piece 5 is easily arranged in an annular shape by engaging the lap portion x formed of a convex portion with the concave portion xa.

  As shown in FIG. 4, it is preferable to attach a magnet plate 9 to each lap portion x, so that when the rim mounting body piece 5 is annularly arranged on the rim R, the rim is caused by the magnetic force of the magnet plate 9. The mounting body piece 5 is held in an annular shape, and the rim mounting body piece 5 can be easily temporarily fixed onto the rim R. When the connecting member 7 is made of a metal that the magnet plate 8 is magnetically attached to, the magnet plate 9 does not have to be attached to each lap portion x, and may be attached to any one of the adjacent lap portions x.

  When the rim mounting body piece 5 is annularly disposed on the rim R and temporarily fixed, there is a gap between the end surfaces 5n of the adjacent rim mounting body pieces 5 (end surfaces 6n and 7n of the rim sheet member 6 and the connecting member 7). Yes, when the right and left leg portions 2 of the tire body 4 are connected and fixed, the rim seat member 6 is compressed and the connecting member 7 moves radially inward, and when the non-pneumatic tire is mounted on the rim R, they are adjacent to each other. The end surfaces 5n of the rim mounting body pieces 5 are configured to contact each other.

  Each leg portion 2 of the tire main body 4 includes a fixing ring 10 fixed to the rim mounting body piece 5 and a leg main body 11 standing on the outer peripheral side of the fixing ring 10. The fixing ring 10 is made of metal, and an inner peripheral surface 10 a that contacts the outer peripheral surface 7 a of the connecting member 7 (the outer peripheral surface 1 a of the rim mounting body 1) has the same polygonal shape as the outer peripheral surface 1 a of the rim mounting body 1. . Moreover, the inner peripheral surface 10a is formed in the inclined surface located in the tire radial direction inner side in the tire axial direction like the outer peripheral surface 7a of the connection member 7.

  The fixing ring 10 has an annular flange 12 that protrudes inward in the tire radial direction from an end portion of the inner peripheral surface 10a located on the inner side in the tire axial direction. As shown in FIG. Through holes 13 into which B is screwed are provided at predetermined intervals in the circumferential direction. The through holes 13 are provided in the same number as the total number of the through holes 8 described above, and are provided in at least nine places. The minimum inner diameter Rs of the fixing ring 10 (the diameter of the inner peripheral end of the annular flange 12) is larger than the maximum outer diameter Rf of the flange R1 of the rim R to be mounted.

  The leg main body 11 has a configuration in which columnar legs 14 extending from the outer peripheral surface 10b of the fixing ring 10 to the grounding portion 3 are arranged at predetermined intervals in the circumferential direction. Each leg 14 is made of an elastic material made of rubber or resin, and can be bent and deformed. The leg 14 is integrated with the fixing ring 10 by being fixed to the outer peripheral surface 10b of the fixing ring 10 at the time of heat curing.

  The grounding portion 3 includes an annular base layer 15 and an annular cap rubber layer 16 disposed on the outer peripheral side thereof. The cap rubber layer 16 has a tread surface 17 in contact with the road surface on the outer peripheral side. The base layer 15 is made of an elastic material made of rubber or resin. In the illustrated example, the base layer 15 is made of the same elastic material as that of the leg body 14 and is integrated with the leg body 14.

  FIG. 6 shows a method of mounting the above-described non-pneumatic tire of the present invention on the rim R of an existing wheel W. First, as shown by the arrow in FIG. 6A, the rim mounting body piece 5 of one rim mounting body 1 is annularly arranged on one seating portion R1 of the rim R while the lap portion x is overlapped. Do (temporary fastening). In the case of the rim mounting body pieces 5A, 5B, and 5C shown in FIG. 3, after the rim mounting body piece 5A is first arranged, the rim mounting body piece 5B has a lap portion x formed of a convex portion of one of the rim mounting body pieces 5A. It arrange | positions so that it may engage with the recessed part a of the lap | wrap part x.

  Then, the rim mounting body piece 5C is arranged so that the wrap portion x formed by the convex portion engages with the concave portion a of the lap portion x of the rim mounting body pieces 5A and 5B. As shown in FIG. 6B, the outer diameter Do of the outer peripheral surface 1a of the rim mounting body 1 composed of the rim mounting body pieces 5 arranged in an annular shape is as shown in FIG. It becomes larger than the inner diameter Di of the inner peripheral surface 10a).

  Next, one leg portion 2 of the tire main body 4 is moved to one outer peripheral side of one seating portion R1 of the rim R. At this time, since the minimum inner diameter Rs of the fixing ring 10 (leg part 2) is larger than the maximum outer diameter Rf of the flange R1 of the rim R to be mounted, one leg part 2 of the tire body 4 is obstructed by the flange R1. Without moving easily.

  Subsequently, the bolt B is inserted into each through hole 8 provided in the connecting member 7 of the rim mounting body piece 5 and further screwed into the through hole 13 provided in the fixing ring 10 of the one leg portion 2 of the tire body 4. . As shown in FIG. 6C, by tightening the bolt B, the leg 2 (fixing ring 10) moves to the rim mounting body 1 side, and the inner peripheral surface 10 a of the fixing ring 10 is the outer peripheral surface of the connecting member 7. 7a abuts against the inner end and presses the rim mounting body piece 5 toward the inner peripheral side. Accordingly, the connecting member 7 moves to the inner peripheral side and presses the rim sheet member 6, and the rim sheet member 6 is compressed and deformed to be crimped to the rim R.

  When the inner peripheral surface 10a of the fixing ring 10 and the outer peripheral surface 7a of the connecting member 7 and the annular flange 12 and the connecting member 7 come into contact with each other, the fastening operation using the bolt B is completed. At the end of fastening, the end surfaces 5n of the adjacent rim mounting body pieces 5 come into contact with each other.

  Next, as shown in FIG. 6 (d), the other leg 2 is deformed inward, and the rim mounting body piece 5 of the other rim mounting body 1 is annularly formed on the other seating portion R2 of the rim R. Place (temporary fastening). Thereafter, similarly to the above, the other rim mounting body piece 5 and the other leg 2 of the tire body 4 are connected and fixed by the bolt B, and the rim assembling work is completed.

  According to the above-described present invention, the non-pneumatic tire has a split structure in which the rim mounting body 1 and the tire body 4 can be fixed by the bolt B, and the rim mounting body 1 is further divided in the circumferential direction. Since the rim mounting body piece 5 is arranged on the rim R of the existing wheel W to form the annular rim mounting body 1, the tire body 4 is fixed to the non-pneumatic tire. It can be mounted on the rim R. Therefore, the existing wheel W can be used as it is.

  Further, when the tire body 4 is damaged by a curb stone or the like, it is only necessary to remove the damaged tire body 4 by removing the bolt B, and it is not necessary to replace the entire tire (the rim mounting body 1 can be used as it is. ).

  Furthermore, the non-pneumatic tire has a split structure in which the rim mounting body 1 and the tire main body 4 can be fixed by the bolt B, so that the same rim mounting body 1 can be used even if the tire main body 4 has different cross-sectional heights and widths. There is also an advantage that can be used.

  Further, when the outer peripheral surface 7a of the connecting member 7 and the inner peripheral surface 10a of the fixing ring 10 are formed on an inclined surface located on the inner side in the tire radial direction toward the inner side in the tire axial direction, and when the non-pneumatic tire is mounted on the rim R, By configuring the rim mounting body piece 5 so that the rim seat member 6 is in a compressed state, the rim seat member 6 is compressed to the rim R in the process of fastening the tire body 4 to the rim mounting body 1 with bolts B. The non-pneumatic tire can be firmly attached to the rim R by assembling the rim.

  Further, the tire body 4 can be easily positioned with respect to the rim mounting body 1 by configuring the outer peripheral surface 1a of the rim mounting body 1 and the inner peripheral surface 10a of the fixing ring 10 in contact with the outer peripheral surface 1a in the same polygonal shape. Therefore, the attachment work to the rim R can be facilitated.

  In the present invention, the lap portion x in the connecting member 7 of the rim mounting body piece 5 is not limited to the configuration shown in FIG. 3. For example, as shown in FIG. 7, from the end surface 7 n of the connecting member 7 to the inner side in the circumferential direction. It may be a wrap part x having a recessed part xa and a projecting part fitted into the recessed part xa, and any of the adjacent rim mounting body pieces 5 can be partially wrapped. A configuration may be adopted.

  Moreover, in the said embodiment, although the example which connects and fixes the tire main body 4 and the rim | limb mounting body 1 with the volt | bolt B as a fastening means was shown, instead, for example, as shown in FIG. On the other hand, a male screw part 20 is projected at a predetermined interval in the circumferential direction, and a through hole 21 through which the male screw part 20 is inserted is provided in the connecting member 7, and a nut 22 is provided on the male screw part 20 inserted into the through hole 21. The tire body 4 and the rim mounting body 1 may be connected and fixed by screwing, and any fastening means may be used as long as the connection can be fixed.

  The rim mounting body 1 is composed of three rim mounting body pieces 5 that are divided into three at substantially the same angle as in the above-described embodiment. Although it is preferable for facilitating the movement to the inner periphery side uniformly and facilitating the work at the time of temporary fixing, it is not limited to this, and it is also possible to configure a plurality of rim mounting body pieces divided into four or more parts. is there.

  Moreover, although the outer peripheral surface 1a of the rim mounting body 1 and the inner peripheral surface 10a of the fixing ring 10 in contact with the outer peripheral surface 1 are polygonal in the above embodiment, they may be configured to extend in a wave shape instead. Furthermore, at the end of fastening, the end faces 5n of the adjacent rim mounting body pieces 5 may not contact each other and may have a slight gap, and the present invention is not limited to the above-described embodiment.

It is sectional drawing shown in the state with which one Embodiment of the non-pneumatic tire of this invention was mounted | worn to the rim. It is a perspective view which cuts and shows a part of non-pneumatic tire of FIG. It is a side view of a rim mounting body piece. It is a partial expanded side view which shows the preferable example of a rim mounting | wearing body piece. It is a side view of a tire main part. (A)-(d) is sectional explanatory drawing which shows the procedure of mounting | wearing a rim with a non-pneumatic tire. It is a perspective view which shows the other example of a rim mounting | wearing body piece. It is sectional drawing shown in the state which mounted | wore the rim with other embodiment of the non-pneumatic tire of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rim mounting body 1a Outer peripheral surface 2 Leg part 3 Grounding part 4 Tire main body 5 Rim mounting body piece 6 Rim seat member 7 Connecting member 7X End 7a Outer peripheral surface 10 Fixing ring 10a Inner peripheral surface 11 Leg main body 16 Cap rubber layer B Bolt (Fastening means)
R rim x lap part xa concave part

Claims (12)

  A pair of left and right annular rim mounting bodies that are detachably mounted on the rim, and an annular structure in which a grounding portion that is in contact with the road surface is extended between the left and right legs standing on the outer periphery of the left and right rim mounting bodies. A non-pneumatic tire comprising a plurality of rim mounting bodies, each of the left and right rim mounting bodies being divided along the circumferential direction, and the rim mounting bodies of the left and right rim mounting bodies. A non-pneumatic tire in which a piece and the left and right leg portions are respectively fixed by fastening means.   2. The non-pneumatic tire according to claim 1, wherein each leg portion includes a fixing ring that is fixed to the plurality of rim mounting body pieces and a leg main body that is erected on an outer peripheral side of the fixing ring.   The non-pneumatic tire according to claim 2, wherein a minimum inner diameter Rs of the fixing ring is larger than a maximum outer diameter Rf of a flange of a rim to be mounted.   The non-pneumatic tire according to claim 2 or 3, wherein the fixing ring is made of metal, and the leg main body is made of an elastic material made of rubber or resin.   5. The non-air according to claim 2, 3 or 4, wherein each rim mounting body piece is configured integrally by disposing a connecting member for fixing to the fixing ring on an outer peripheral side of a rim seat member seated on the rim. Enter tire.   The outer peripheral surface of the connecting member in contact with the fixing ring and the inner peripheral surface of the fixing ring in contact with the outer peripheral surface of the connecting member are inclined surfaces positioned on the inner side in the tire radial direction toward the inner side in the tire axial direction. Non-pneumatic tire.   The non-pneumatic tire according to claim 6, wherein the rim mounting body piece is configured such that the rim seat member is compressed when the non-pneumatic tire is mounted on a rim.   The non-pneumatic tire according to claim 5, 6 or 7, wherein the rim sheet member is made of an elastic material made of rubber or resin, and the connecting member is made of a material selected from rubber, resin or metal.   The non-pneumatic tire according to claim 5, 6, 7, or 8, wherein the connecting member has a lap portion at an end portion overlapping with a connecting member of an adjacent rim mounting body piece.   The non-pneumatic tire according to any one of claims 2 to 9, wherein an outer peripheral surface of the rim mounting body and an inner peripheral surface of the fixing ring in contact therewith extend in the same polygonal shape or corrugated shape.   The non-pneumatic tire according to any one of claims 1 to 10, wherein the grounding portion has a cap rubber layer having a tread surface in contact with a road surface on an outer peripheral side. The non-pneumatic tire according to any one of claims 1 to 11 , wherein the left and right rim mounting bodies are each composed of three rim mounting body pieces divided into three in the circumferential direction.

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