JP2009234361A - Solid tire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solid tire capable of easily obtaining retaining force of a tire part against a load along a rotation direction of a rim part and allowing easy separation of the rim part from the tire part. <P>SOLUTION: A rim projection 15 and a rim recession 16 are formed on an outer peripheral surface of the rim part 13. A tire projection 17 and a tire recession 18 are formed on an inner peripheral surface of the tire part 12. The tire projection 17 and the tire recession 18 are fitted/pressure-mounted to the rim recession 16 and the rim projection 15 respectively. The respective projections 15, 17 and the respective recessions 16, 18 are formed so as to extend along an axial direction of the rim part 13. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a solid tire.

Solid tires are wheels for industrial vehicles such as automated guided vehicles and forklifts, wheels for transportation in automatic warehouses, multistory parking lots, various manufacturing facilities, wheels for play equipment such as roller coasters and ferris wheels, etc. It's being used. In such a solid tire, a solid tire portion is provided on the outer periphery of the rim portion, and a shear load is applied to the interface between the rim portion and the tire portion during traveling. For this reason, it is necessary to attach a tire part with respect to a rim | limb part so that it can endure the shear load. Conventionally, as a structure for attaching a tire portion to a rim portion, a configuration in which an adhesive layer is provided between the rim portion and the tire portion is generally used. Moreover, the structure which pinches | interposes a tire part with a pair of rim | limb part is disclosed as such an attachment structure (refer patent documents 1-3).
JP 2003-182303 A JP 2003-182306 A Japanese Patent Laid-Open No. 06-106908

  By the way, for example, a solid tire that has reached the end of its life by reaching a predetermined travel distance is replaced with a new solid tire. When the thus replaced solid tire is recycled, the rim portion and the tire portion are separated. Here, by providing an adhesive layer having a strong adhesive force between the rim portion and the tire portion, durability against a shear load is increased. However, it is very difficult to separate the rim portion and the tire portion. Therefore, as shown in Patent Documents 1 to 3, according to the configuration in which the tire portion is sandwiched between the pair of rim portions, the separation between the rim portion and the tire portion is facilitated by separating the pair of rim portions. Conceivable. However, although the holding force of the tire portion can be easily obtained with respect to the load along the axial direction of the rim portion, the holding force of the tire portion is hardly obtained with respect to the load along the rotation direction of the rim portion. For this reason, for example, when a large torque is transmitted from the axle to the rim portion, the rim portion may idle with respect to the tire portion. For this reason, as a result of using a strong adhesive to prevent such idling, separation of the rim portion and the tire portion becomes difficult as described above.

  The present invention has been made in view of such circumstances, and the object thereof is to easily obtain a holding force of the tire portion with respect to a load along the rotation direction of the rim portion, and the rim portion and the tire portion. It is to provide a solid tire that can be easily separated.

  In order to achieve the above object, a solid tire according to a first aspect of the present invention is a solid tire in which a tire portion is provided on an outer periphery of a rim portion, and includes an outer peripheral surface of the rim portion and an inner portion of the tire portion. The peripheral surface is fitted by the relationship between the ridge and the groove, and the ridge and the groove are pressure-bonded, and the protrusion and the groove are formed to extend along the axial direction of the rim portion. It is a summary.

  In this invention, the holding force of the tire part with respect to a rim | limb part becomes easy to be acquired by the structure crimped | bonded by the relationship between a protruding item | line and a concave item, and crimped | bonded. In particular, since the ridges and the ridges are formed so as to extend in the axial direction of the rim portion, a resistance force easily acts on a load along the rotation direction of the rim portion.

The gist of the invention according to claim 2 is that, in the solid tire according to claim 1, the ridges and ridges are formed over the entire axial direction of the rim portion.
According to this configuration, the holding force of the tire portion against the load along the rotation direction of the rim portion is exerted with a good balance in the axial direction of the rim portion.

  According to a third aspect of the present invention, in the solid tire according to the first or second aspect, the intervals between the ridges and the intervals between the ridges are equally spaced along the outer periphery of the rim portion. This is the gist.

According to this configuration, the holding force of the tire portion with respect to the rim portion is exerted in a balanced manner in the circumferential direction of the solid tire with respect to the load along the rotation direction of the rim portion.
According to a fourth aspect of the present invention, in the solid tire according to any one of the first to third aspects, the tip end portion of the ridge in the tire portion is pressure-bonded to the inner bottom portion of the ridge in the rim portion. It is a summary.

  According to a fifth aspect of the present invention, in the solid tire according to any one of the first to fourth aspects, the inner bottom part of the concave line in the tire part is pressure-bonded to the tip part of the convex line in the rim part. It is a summary.

  According to the above configuration, the elasticity of the tire portion increases the adhesion between the ridges and the ridges, so that not only the resistance to the load along the rotation direction of the rim portion but also the load along the axial direction of the rim portion. Resistance to work is also easier to work.

  According to a sixth aspect of the present invention, in the solid tire according to any one of the first to fifth aspects, a side plate that sandwiches a side surface of the tire portion is provided on both sides of the rim portion. Is the gist.

  According to this configuration, the holding force of the tire portion can be easily obtained with respect to the load along the axial direction of the rim portion.

  According to the present invention, it is possible to provide a solid tire in which a holding force of the tire portion can be easily obtained with respect to a load along the rotation direction of the rim portion and the rim portion and the tire portion can be easily separated.

Hereinafter, an embodiment in which the solid tire of the present invention is embodied will be described with reference to FIGS. 1 and 2.
As shown in FIGS. 1 and 2, the solid tire includes a cylindrical wheel 11 and a tire portion 12 provided on the outer periphery of the wheel 11. The wheel 11 is configured to be mounted on an axle (not shown) by a mounting portion 14 integrally formed inside the annular rim portion 13. The wheel 11 is made of a metal material in order to ensure rigidity. On the other hand, the tire portion 12 has an annular shape and a running surface, and is composed of various elastomers. Examples of the elastomer include urethane elastomer, olefin elastomer, styrene elastomer, silicone rubber, ethylene-propylene rubber, chloroprene rubber, butyl rubber, acrylonitrile-butadiene rubber, styrene-butadiene rubber, acrylic rubber, and natural rubber. Various elastomers may be used alone or in combination. Among various elastomers, urethane-based elastomers are preferable from the viewpoint that the physical properties of the tire part 12 can be easily adjusted and the performance of the tire part 12 can be easily improved. In addition, you may comprise the tire part 12 from the several layer from which hardness differs.

  A rim ridge 15 and a rim ridge 16 having a trapezoidal cross section are formed on the outer peripheral surface of the rim portion 13. That is, the outer wall of the rim ridge 15 is formed in a tapered shape that approaches each other toward the tip, and the inner wall of the rim ridge 16 is formed in a tapered shape that approaches each other toward the inner bottom. Yes. The intervals between the rim ridges 15 and the rim recesses 16 are provided at equal intervals along the outer periphery of the rim portion 13. In the rim portion 13 of the present embodiment, 66 rim ridges 15 and rim ridges 16 are respectively formed.

  As shown in FIG. 2, the rim ridges 15 and the rim ridges 16 are formed so as to extend along the axis L direction of the rim portion 13. The rim ridges 15 and the rim ridges 16 of the present embodiment are formed on the outer peripheral surface of the rim portion 13 over the entire axis L direction of the rim portion 13.

  On the other hand, on the inner peripheral surface of the tire portion 12, a tire ridge 17 and a tire groove 18 extending in the axis L direction of the rim portion 13 are formed, and the tire ridge 17 and the tire groove 18 are respectively formed on the rim groove. 16 and the rim ridge 15 are configured to be fitted. Similar to the rim ridges 15 and the rim ridges 16, the tire ridges 17 and the tire ridges 18 have a trapezoidal cross section having an outer wall and an inner wall, respectively. Further, the tire ridges 17 and the rim ridges 15 are also provided at equal intervals along the inner periphery of the tire portion 12, and extend across the entire axis L direction of the rim portion 13 on the inner peripheral surface of the tire portion 12. Is formed. The outer wall of the tire ridge 17 is fitted and crimped to the inner wall of the rim groove 16. Accordingly, the outer wall of the rim ridge 15 is fitted and crimped to the inner wall of the tire ridge 18.

  In the tire portion 12 before being mounted on the rim portion 13, the inner periphery thereof is formed with a size that is smaller than the outer periphery of the rim portion 13. That is, the linear distance (d1) that passes through the center of the tire portion 12 and connects the tip surfaces of the tire ridges 17 is the linear distance (D1) that passes through the center of the rim portion 13 and connects the inner bottom surfaces of the rim recesses 16. (D1> d1). Thus, the tip wall of the tire ridge 17 is pressed against the inner bottom wall of the rim recess 16, so that the tip wall of the tire ridge 17 is pressed against the inner bottom wall of the rim recess 16. On the other hand, a linear distance (d2) that passes through the center of the tire portion 12 and connects the inner bottom surfaces of the tire recesses 18 is a linear distance (D2) that passes through the center of the rim portion 13 and connects the tip surfaces of the rim projections 15 together. (D2> d2). Thus, the inner bottom wall of the tire recess 18 is pressed against the tip wall of the rim projection 15, so that the inner bottom wall of the tire recess 18 is pressed against the tip wall of the rim projection 15. In the mounted tire portion 12, the linear distances (d1) and (d2) are the linear distances (D1) and (D2) in the rim portion 13, respectively. With such a crimping structure, the adhesion of the inner peripheral surface of the tire portion 12 to the outer peripheral surface of the rim portion 13 is enhanced.

  Side plates 19 that sandwich the side surface of the tire portion 12 are provided on both sides of the rim portion 13. These side plates 19 each have an annular shape and are configured to sandwich the side surface of the tire portion 12 over the entire circumference. A plurality of through holes are formed in one side plate 19, and one side plate 19 is configured to be fastened to a side surface of the rim portion 13 by a fastening member 20 inserted into the through holes. . The other side plate 19 is fixed to the rim portion 13 in advance by welding. By holding the side surfaces of the tire portion 12 by the side plates 19, it is easy to obtain the holding force of the tire portion 12 with respect to the load along the axis L direction of the rim portion 13.

  In the tire portion 12 of the present embodiment, the width (W1) of the inner peripheral portion thereof is set slightly wider than the width (W2) of the outer peripheral portion of the rim portion 13. For this reason, when the tire part 12 is fastened to the side plate 19 by the fastening member 20, the tire part 12 is compressed in the direction of the axis L of the rim part 13. In the mounted tire portion 12, the width (W1) is the width (W2) in the rim portion 13. With such a compression structure, the displacement of the tire portion 12 along the axis L direction of the rim portion 13 can be suppressed as much as possible.

  Such a tire portion 12 can be molded using a mold. In addition, you may form the tire part 12 by cutting the molded article shape | molded by the predetermined shape. On the other hand, the wheel 11 can be formed by cutting a metal material or the like.

  The mounting of the tire part 12 will be described in detail. The tire part 12 is fitted from the side of the rim part 13 so that the tire concave line 18 and the tire convex part 17 are aligned with the rim convex part 15 and the rim concave part 16, respectively. The tire portion 12 is press-fitted into the rim portion 13. At this time, since each convex strip 15, 17 and each concave strip 18, 16 are configured to extend along the axis L direction of the rim portion 13, the tire portion 12 is extended along the axis L direction with respect to the rim portion 13. By pressing, it can be easily mounted. Next, one side plate 19 is fastened to the side surface of the rim portion 13. The solid tire configured as described above is fitted according to the relationship between the ridges 15 and 17 and the recesses 18 and 16, and the ridges 15 and 17 and the recesses 18 and 16 are pressure-bonded. Therefore, the holding force of the tire portion 12 with respect to the rim portion 13 is easily obtained. In particular, since each of the ridges 15 and 17 and each of the ridges 18 and 16 is configured to extend in the direction of the axis L of the rim portion 13, resistance easily acts on a load along the rotation direction of the rim portion 13. . Therefore, for example, when the solid tire is running, torque is transmitted from the axle to the wheel 11, thereby preventing the rim portion 13 from slipping with respect to the tire portion 12. Therefore, it can be configured without providing an adhesive layer that joins the outer peripheral surface of the rim portion 13 and the inner peripheral surface of the tire portion 12.

  For example, in a solid tire that has reached the end of its life by reaching a predetermined travel distance or travel time, the rim portion 13 and the tire portion 12 are separated and used for recycling. That is, the fastening member 20 is removed and one side plate 19 is detached from the rim portion 13. Next, the rim portion 13 and the tire portion 12 are pressed so as to face each other along the direction of the axis L of the rim portion 13 to separate the rim portion 13 and the tire portion 12. Here, when the tire portion 12 is mounted on the rim portion 13, the adhesive layer that joins the outer peripheral surface of the rim portion 13 and the inner peripheral surface of the tire portion 12 is omitted, for example, an adhesive on the outer peripheral surface of the rim portion 13. At the same time, it is possible to avoid the fragments of the tire portion 12 from remaining. For this reason, the rim portion 13 and the tire portion 12 can be smoothly separated.

  The solid tire of the present embodiment includes, for example, wheels of industrial vehicles such as automatic guided vehicles and forklifts, transportation wheels provided in automatic warehouses, multilevel parking lots, various manufacturing facilities, and games such as roller coasters and ferris wheels. Used as a wheel provided in the device. Here, in the wheel of an industrial vehicle such as a forklift, the torque transmitted from the axle to the wheel 11 tends to be large. If the solid tire of this embodiment is applied to the wheel of such an industrial vehicle, the torque transmitted to the wheel 11 is extremely effective from the viewpoint of preventing the tire portion 12 from slipping relative to the rim portion 13.

The effects exhibited by this embodiment will be described below.
(1) The rim portion 13 and the tire portion 12 are fitted by the relationship between the ridges 15 and 17 and the recesses 18 and 16, and the outer walls of the ridges 15 and 17 are respectively connected to the recesses 18 and 16, respectively. 16 is crimped to the inner wall. In particular, since the ridges 15 and 17 and the ridges 18 and 16 are formed so as to extend along the direction of the axis L of the rim portion 13, they are resistant to a load along the rotation direction of the rim portion 13. Power becomes easy to work. Thereby, for example, even if the adhesive layer that joins the outer peripheral surface of the rim portion 13 and the inner peripheral surface of the tire portion 12 is omitted, the holding force of the tire portion 12 with respect to the load along the rotation direction of the rim portion 13. Is easily obtained. Furthermore, the omission of the adhesive layer facilitates separation of the rim portion 13 and the tire portion 12. Therefore, it is easy to recycle the rim portion 13 by attaching a new tire portion 12 to the separated rim portion 13 of the solid tire that has reached the end of its life. Further, for example, it is easy to subject the metal material forming the rim part 13 to material recycling, or to subjecting the elastomer forming the tire part 12 to thermal recycling. Thus, an environmentally friendly solid tire can be provided.

  (2) On the outer peripheral surface of the rim portion 13, the rim protrusions 15 and the rim recesses 16 are formed so as to extend over the entire axis L direction of the rim portion 13. For this reason, the holding force of the tire portion 12 with respect to the rim portion 13 is exerted in a balanced manner in the direction of the axis L of the rim portion 13 with respect to the load along the rotation direction of the rim portion 13. Accordingly, the durability of the solid tire can be enhanced while ensuring the ease of separation between the rim portion 13 and the tire portion 12.

  (3) The intervals between the ridges 15, 17 and the intervals between the ridges 16, 18 are equal along the outer periphery of the rim portion 13. For this reason, with respect to the load along the rotation direction of the rim portion 13, the holding force of the tire portion 12 with respect to the rim portion 13 is exhibited in a balanced manner in the circumferential direction of the solid tire. Accordingly, the durability of the solid tire can be enhanced while ensuring the ease of separation between the rim portion 13 and the tire portion 12.

  (4) The tip wall of the tire ridge 17 is crimped to the inner bottom wall of the rim recess 16. For this reason, the adhesion of the tire ridges 17 and the rim recesses 16 is enhanced by the elasticity of the tire part 12, so that not only the resistance to the load along the rotation direction of the rim part 13 but also the axial direction of the rim part 13. Resistance to the load along it is also easier to work.

  (5) Furthermore, since the inner bottom wall of the tire recess 18 is pressure-bonded to the tip wall of the rim projection 15, the adhesion between the tire recess 18 and the rim projection 15 is enhanced. Therefore, the resistance force described in the column (4) can be increased.

  (6) Since the ridges 15 and 17 and the ridges 18 and 16 are formed so as to extend along the axis L direction of the rim portion 13, a holding force is applied to a load along the axis L direction. There may be a shortage. Side plates 19 that sandwich the side surface of the tire portion 12 are provided on both sides of the rim portion 13 of the present embodiment. For this reason, the holding force of the tire part 12 with respect to the rim part 13 with respect to the load along the axis L direction of the rim part 13 is easily obtained.

The embodiment may be modified as follows.
The side plates 19 each have an annular shape and are configured so as to sandwich the side surface of the tire portion 12 over the entire circumference. However, the side plate 19 partially sandwiches the side surface of the tire portion 12 in the circumferential direction of the tire portion 12. You may comprise. In this case, from the viewpoint that the holding force of the tire portion 12 is sufficiently secured, it is preferable that the one side plate 19 and the other side plate 19 face each other along the axis L direction of the rim portion 13. The side plates 19 may be provided without facing each other. The side plate 19 can be omitted.

  -You may form a convex part in the surface contact | abutted in the tire part 12 in the said side plate 19. FIG. For example, by providing a plurality of such convex portions apart in the circumferential direction, it becomes easier to obtain the holding force of the tire portion 12 against the load along the rotational direction of the rim portion 13.

The other side plate 19 is fixed to the rim portion 13 in advance, but may be configured to be detachable by a fastening member.
The tip wall of each ridge 15 and 17 and the inner bottom wall of each recess 18 and 16 are crimped, but the tip wall of the rim ridge 15 and the inner bottom wall of the tire groove 18 are configured without being crimped. Alternatively, the tip wall of the tire ridge 17 and the inner bottom wall of the rim recess 16 may be configured without being crimped. Furthermore, you may comprise so that the front end wall of each protruding item | line 15 and 17 and the inner bottom wall of each recessed item | line 18 and 16 may not be crimped | bonded. That is, as shown in an enlarged view in FIG. 3, only the outer wall of each protrusion 15, 17 and the inner wall of each recess 18, 16 may be crimped and fitted.

The intervals between the ridges 15 and 17 and the intervals between the ridges 18 and 16 are equal along the circumferential direction of the rim portion 13, but may be unequal.
Each of the ridges 15 and 17 and each of the ridges 18 and 16 is formed so as to extend in the entire axis L direction of the rim portion 13, but may be formed so as to partially extend in the axis L direction. .

  -The cross-sectional shape of each protruding item | line 15,17 and each recessed item | line 18,16 is not specifically limited, By forming each protruding item | line 15,17 and each recessed item | line 18,16 to a cross-sectional curved shape, for example, the convex shape You may comprise so that a strip and a concave strip may be fitted, and these convex strips and a concave strip may be crimped | bonded. However, it is preferable that the ridges and the ridges have a shape having side walls as in the above embodiment. That is, the action of receiving the load along the rotation direction of the rim portion 13 is easily exhibited between the side walls, and as a result, the holding force of the tire portion 12 with respect to the rim portion 13 is increased.

  -For example, according to the hardness etc. of the tire part 12, you may change suitably the space | interval of each protrusion 15,17, the space | interval of each recess 18,16, the depth of each recess 18,16, etc. FIG. Moreover, the number of each protruding item | line 15,17 and each recessed item | line 18,16 is not specifically limited. For example, in the solid tire shown in FIG. 3, the number of the ridges 15 and 17 and the number of the ridges 18 and 16 is six.

  In order to increase the holding force of the tire portion 12 with respect to the rim portion 13, an adhesive layer that joins the outer peripheral surface of the rim portion 13 and the inner peripheral surface of the tire portion 12 may be supplementarily provided. However, in order to facilitate separation of the rim portion 13 and the tire portion 12, it is preferable to configure a solid tire without providing the adhesive layer.

The side view which cuts and shows a part of solid tire of this embodiment. AA sectional view taken on the line AA of FIG. The side view which shows the modification of a solid tire.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 12 ... Tire part, 13 ... Rim part, 15 ... Rim convex strip, 16 ... Rim concave strip, 17 ... Tire convex strip, 18 ... Tire concave strip, 19 ... Side plate.

Claims (6)

A solid tire in which a tire portion is provided on an outer periphery of a rim portion, and an outer peripheral surface of the rim portion and an inner peripheral surface of the tire portion are fitted by a relationship between a convex strip and a concave strip, and the convex strip and A solid tire, wherein a concave line is crimped, and the convex line and the concave line are formed so as to extend along an axial direction of the rim portion. The solid tire according to claim 1, wherein the ridges and ridges are formed over the entire axial direction of the rim portion. 3. The solid tire according to claim 1, wherein an interval between the ridges and an interval between the ridges are equal along an outer periphery of the rim portion. The solid tire according to any one of claims 1 to 3, wherein a tip end portion of the ridge in the tire portion is pressure-bonded to an inner bottom portion of the ridge in the rim portion. The solid tire according to any one of claims 1 to 4, wherein an inner bottom portion of the groove in the tire portion is pressure-bonded to a tip portion of the protrusion in the rim portion. The solid tire according to any one of claims 1 to 5, wherein side plates sandwiching a side surface of the tire portion are provided on both sides of the rim portion.

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