Tire sidewall protector

Abstract

To provide a tire sidewall protector that can be easily and securely attached to a rim.SOLUTION: A sidewall protector 1 comprises: a protector 10 having a plate-like shape capable of covering a sidewall of a tire attached to a wheel of a vehicle; and a plurality of locking pieces 30 provided on an inner peripheral portion of the protector 10, which is arranged on an inner peripheral side of the sidewall, and capable of being locked to a cylindrical-shaped rim of the wheel. Each of the locking pieces 30 contacts an inner peripheral surface of the rim and locks to the rim by pressing the inner peripheral surface of the rim in a radial direction of the rim and outward. In addition, the protector 10 covers the sidewall with each of the locking pieces 30 locked to the rim.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a tire sidewall protection device. [Background technology]

[0002] In large vehicles such as work machines and construction machines used in tunnel construction, quarries, mines, etc., the tire sidewalls may be damaged by contact with protruding objects such as stones, wood, materials, etc. Therefore, in order to prevent this damage to the sidewalls, tire sidewall protection devices to be attached to vehicle tires have been developed.

[0003] For example, Patent Document 1 discloses a sidewall protection device that includes a protector that covers the sidewall of a tire and a lock ring that supports the protector, and that positions the protector on the sidewall of a tire by attaching the lock ring to the rim of a wheel. In this protection device, the lock ring is composed of a C-shaped retaining ring and a lock part that fits into the opening of the C-shape of the retaining ring. This protection device is attached to the rim by fitting the retaining ring into the cylindrical rim of the wheel and fitting the lock part into the opening of the retaining ring to make the retaining ring into a ring shape. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 7327862 Summary of the Invention [Problem to be solved by the invention]

[0005] The tire sidewall protection device described in Patent Document 1 is attached to the rim by fitting a locking part to a retaining ring fitted on the rim. However, it is desired that such a protection device can be attached to the rim more easily and reliably.

[0006] The present invention has been made to solve the above problems, and has an object to provide a tire sidewall protection device that can be easily and securely attached to a rim. [Means for solving the problem]

[0007] In order to achieve the above object, a tire sidewall protection device according to the present invention comprises: A protector having a plate shape capable of covering a sidewall of a tire attached to a wheel of a vehicle; a plurality of locking pieces provided on an inner peripheral portion of the protector that is disposed on the inner peripheral side of the sidewall and capable of being locked to a cylindrical rim of the wheel; Equipped with each of the locking pieces is engaged with the rim by contacting the inner circumferential surface of the rim and pressing the inner circumferential surface of the rim radially outwardly of the rim; The protector is characterized in that it covers the sidewall with each of the locking pieces locked to the rim.

[0008] Each of the locking pieces may be engaged with the rim by abutting against a rim flange provided on both cylindrical ends of the rim from the side of the inner surface of the rim and pressing the rim flange radially and outwardly of the rim.

[0009] Each of the locking pieces may be formed from an elastically deformable material, and may be elastically deformed to come into contact with the rim flange and press the rim flange with its elastic force, thereby locking to the rim.

[0010] The rim flange has an inner wall portion that is recessed radially outwardly of the rim toward a central portion of the rim in a cylindrical axial direction, Each of the locking pieces is A base portion provided on the inner circumferential portion of the protector; an elastically deformable portion that protrudes from the base portion toward an outer circumferential portion of the protector; having The base may be positioned in a cylindrical space of the rim, and the elastic deformation portion may protrude from the base in the radial direction and outwardly of the rim, and the elastic deformation portion may further elastically deform and abut against the inner wall portion of the rim flange, thereby engaging with the rim.

[0011] The elastic deformation portion may have a metal plate having a convex surface that protrudes in an arc shape by being bent into an arc shape, and by elastically deforming with the convex surface facing radially and outwardly of the rim, the convex surface may be abutted against the inner wall portion of the rim flange and engaged with the rim flange.

[0012] a base member having an annular shape, arranged concentrically with the cylinder of the rim, and in contact with rim flanges provided on both ends of the cylinder of the rim from the side of the cylindrical end of the rim; The protector is attached to the base member and supported by the base member, The plurality of locking pieces may be provided at equal intervals in a circumferential direction of the ring of the base member.

[0013] A vertical rod portion supported on a toric surface of the base member; A horizontal bar portion extending perpendicular to the vertical bar portion and supporting the locking piece; The actuator may further include a block member having a Effect of the Invention

[0014] According to the configuration of the present invention, each of the locking pieces can be locked to the rim simply by abutting the respective locking pieces against the inner circumferential surface of the rim and having the respective locking pieces press the inner circumferential surface of the rim radially outwardly of the rim, which makes it easy and reliable to attach the tire sidewall protection device of the present invention to the rim. [Brief description of the drawings]

[0015] [Figure 1] 1 is a perspective view of a large work vehicle equipped with a tire sidewall protection device according to an embodiment of the present invention. [Diagram 2] 1 is a perspective view of a tire sidewall protection device according to an embodiment of the present invention. [Diagram 3] 1 is a front view of a tire sidewall protection device according to an embodiment of the present invention when the tire sidewall protection device is attached to a wheel rim. FIG. [Figure 4] 4 is a cross-sectional view taken along the line IV-IV shown in FIG. 3. [Diagram 5] 1 is a perspective view of a block member provided in a tire sidewall protection device according to an embodiment of the present invention. FIG. [Figure 6] 1 is a perspective view of a locking piece provided in a tire sidewall protection device according to an embodiment of the present invention; [Figure 7] 3 is a plan view of a locking piece provided in the tire sidewall protection device according to the embodiment of the present invention. FIG. [Figure 8] 3 is a side view of a locking piece provided in the tire sidewall protection device according to the embodiment of the present invention. FIG. [Figure 9] 1 is a perspective photograph showing a portion of a rim of a large work vehicle equipped with a tire sidewall protection device according to an embodiment of the present invention; [Figure 10] 1 is a photographic front view of a wheel of a large work vehicle equipped with a tire sidewall protection device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, a tire sidewall protection device according to an embodiment of the present invention (hereinafter, simply referred to as a sidewall protection device) will be described in detail with reference to the drawings. In the drawings, the same or equivalent parts are denoted by the same reference numerals.

[0017] Fig. 1 is a perspective view of a large work vehicle 100 equipped with a sidewall protection device 1 according to an embodiment. Note that Fig. 1 shows a wheel loader as an example of the large work vehicle 100.

[0018] As shown in Fig. 1, the sidewall protection device 1 is a device that protects the sidewall of a tire equipped on a large work vehicle 100. In detail, the sidewall of the tire that faces the outside of the vehicle is likely to come into contact with protruding objects such as stones, wood, and concrete pieces because the large work vehicle 100 runs on areas that are not sufficiently paved. As a result, the sidewall may be damaged. In order to protect the tires of such a large work vehicle 100, the sidewall protection device 1 includes multiple protectors 10 that are combined together to cover the entire sidewall of the tire.

[0019] Each protector 10 is formed in the shape of a fan-shaped plate. The material is preferably one with a certain degree of strength in order to protect the tire sidewall from obstacles such as the above-mentioned protrusions. For example, the material of the protector 10 is plastic, metal, rubber, textile, etc. The inner and outer diameters of the protector 10 are approximately the same as the inner and outer diameters of the tire sidewall. The protectors 10 are combined together to form an annular shape as a whole. The multiple annular protectors 10 are arranged concentrically with the tire sidewall, so that they cover the tire sidewall. As a result, the multiple protectors 10 protect the tire sidewall from the above-mentioned protrusions, etc.

[0020] Although not shown, each protector 10 is formed, for example, in the shape of a flat plate, a curved plate, a plate with a partially bent portion, etc. The protector 10 is formed in a shape that conforms to the sidewall, for example, in a shape that is bent at the tip side, thereby reducing the gap between the protector 10 and the tire when the protector 10 covers the tire, thereby preventing foreign objects such as stones and sand from entering between the protector 10 and the tire.

[0021] Such a sidewall protection device 1 is attached to each wheel 110 of the large work vehicle 100 on which tires are mounted. For this reason, it is desirable that the sidewall protection device 1 can be attached in a simple manner to reduce the burden of the attachment work. Furthermore, since the wheel 110 to which the sidewall protection device 1 is attached rotates when the large work vehicle 100 operates, it is desirable that the sidewall protection device 1 is securely attached to the wheel 110 and does not easily come off once attached. Therefore, in order to be able to be attached in a simple manner and to be securely attached, the sidewall protection device 1 is provided with multiple locking pieces that lock onto the rim 120 of the wheel 110 by their own elasticity.

[0022] Next, the detailed configuration of the sidewall protection device 1, including the locking pieces 30, will be described with reference to Figures 2 to 5. The sidewall protection devices 1 are attached to the wheels 110 of the large work vehicle 100 shown in Figure 1, and have the same configuration. Therefore, the following description will be given with reference to Figures 2 to 5, which show one of them.

[0023] FIG. 2 is a perspective view of the sidewall protection device 1. FIG. 3 is a front view of the sidewall protection device 1 when the sidewall protection device 1 is attached to the rim 120 of the wheel 110. FIG. 4 is a cross-sectional view taken along the line IV-IV shown in FIG. 3. FIG. 5 is a perspective view of a block member 22 provided in the sidewall protection device 1. For ease of understanding, the bent shape of the protector 10 is omitted in FIG. 2. Also, the protector 10 is omitted in FIGS. 3 and 4. Furthermore, the base member 20 is omitted in FIG. 3.

[0024] As shown in FIG. 2, the sidewall protection device 1 includes, in addition to the above-mentioned multiple protectors 10, a base member 20 that supports each of the protectors 10, and multiple locking pieces 30 provided on the base member 20.

[0025] The base member 20 is formed in the shape of an annular plate. The rim 120 of the wheel 110 is formed in a cylindrical shape, and the outer diameter of the base member 20 is larger than the outer diameter of the rim 120 as shown in FIG. 4. The inner diameter of the base member 20 is smaller than the inner diameter of the rim 120. The base member 20 is arranged concentrically with the rim 120. The base member 20 is in contact with the cylindrical end surface of the rim 120 facing the outside of the vehicle via a block member 22 described later. As a result, the base member 20 is supported by the cylindrical end surface of the rim 120.

[0026] 2, the base member 20 is provided with a plurality of screw holes 21 at equal angles along its outer periphery. Although not shown, a fastener such as a bolt or a screw is attached to each of the screw holes 21. In detail, the fasteners are passed through through holes (not shown) of the above-mentioned multiple protectors 10, and are attached to each of the screw holes 21 from one plate surface (for example, the lower surface in the case of FIG. 2) of the base member 20. In this way, the above-mentioned multiple protectors 10 are fixed to the base member 20. As a result, the base member 20 supports each of the protectors 10.

[0027] Moreover, the base member 20 is formed of a rigid material, for example, a metal material such as steel, in order to obtain the strength to support the protectors 10. As a result, the base member 20 firmly holds the protectors 10. This prevents the protectors 10 from being rubbed due to collision with obstacles such as protrusions.

[0028] On the other hand, on the other plate surface of the base member 20 (for example, the upper surface in Figure 2, also called the annular surface), a plurality of block members 22 are provided for attaching the base member 20 itself having such a configuration to the end surface portion of the rim 120 described above.

[0029] In detail, each of the block members 22 is formed of a metal material and has a shape in which a square prism is bent into an L shape as shown in Fig. 5. As a result, each of the block members 22 has a vertical bar portion 221 and a horizontal bar portion 222 shown in Fig. 5.

[0030] In each of the block members 22, a surface 223 of a vertical bar portion 221 that forms an outer angle of the L-shaped bent portion faces the plate surface of the ring of the base member 20 shown in Fig. 2. Furthermore, the surface 223 is abutted against the plate surface of the ring of the base member 20. The block members 22 are arranged at equal angles in the circumferential direction of the base member 20 and at equal distances from the center C of the ring, with a surface 224 of a horizontal bar portion 222 that forms an outer angle of the L-shaped bent portion shown in Fig. 5 facing the center C of the ring of the base member 20 shown in Fig. 2. The block members 22 are arranged in this manner, and the vertical bar portions 221 are fixed to the plate surface of the base member 20 by a fastener (not shown).

[0031] An even number of such block members 22, specifically six, are arranged in total, as shown in Fig. 2. The block members 22 are provided to attach the locking pieces 30. The locking pieces 30 press the rim 120 with a pressing force, which will be described later, to lock onto the rim 120, so that two block members 22 face each other across the center C of the ring of the base member 20, thereby forming a pair.

[0032] On the other hand, the horizontal bar portions 222 shown in FIG. 5 of each block member 22 are arranged on a circumference as a result of the block members 22 being arranged at equal distances from the center C of the base member 20. The circle on which the horizontal bar portions 222 are arranged is approximately the same as the inner diameter of the rim 120. As a result, the horizontal bar portions 222 come into contact with the inner wall of the rim 120 when inserted into the cylindrical space of the rim 120 as shown in FIG. 4. This allows the block members 22 to fit into the cylindrical space of the rim 120 as a whole. Furthermore, during this fitting, each of the vertical bar portions 22 comes into contact with the cylindrical end surface of the rim 120. As a result, the block members 22 determine the position of the base member 20 relative to the rim 120. A locking piece 30 is attached to the horizontal bar portion 222 to fix the block member 22 to the rim 120.

[0033] The locking piece 30 is a component that, when attached to the rim 120, elastically deforms upon contact with the inner wall of the rim 120, and uses its elastic force to press against the inner wall of the rim 120 and lock onto the rim 120. The detailed configuration of the locking piece 30 is shown in Figs. 6 to 8.

[0034] 6 to 8 are a perspective view, a plan view, and a side view of the locking piece 30 provided in the sidewall protection device 1. Since the locking pieces 30 attached to the block members 22 respectively have the same configuration, only one of them is shown in Fig. 6 to 8, and the others are not shown.

[0035] As shown in FIGS. 6 to 8, the locking piece 30 has a flat base portion 31 and an elastically deformable portion 32 extending from the base portion 31 and having a curved plate shape.

[0036] The base 31 is formed of a rectangular metal plate. A long hole 33 extending in the longitudinal direction of the base 31 is formed in the plate surface of the base 31 to pass a fastener (not shown). As shown in Fig. 5, the base 31 is fixed to the horizontal bar portion 222 by passing a fastener (not shown) through the long hole 33 with the longitudinal direction facing the extension direction of the horizontal bar portion 222 of the block member 22 and fastening the fastener to the horizontal bar portion 222.

[0037] Returning to FIGS. 6 to 8, an elastically deformable portion 32 is provided on the tip side of the base portion 31, which is formed integrally with the base portion 31 and continues from the base portion 31.

[0038] The elastic deformation part 32 is formed of the same metal as the base part 31. The metal material is preferably a material with high tensile strength, for example, a steel material such as stainless steel. The elastic deformation part 32 is formed in the shape of a plate that is bent by 90° with respect to the plate surface of the base part 31 and then curved in an arc shape, specifically a semicircular shape, in the opposite direction to the bending direction. The reason why the elastic deformation part 32 is bent by 90° is that when the base part 31 is arranged along the surface 224 of the horizontal bar part 222 of the block member 22, as shown in FIG. 5, the elastic deformation part 32 can be arranged along the tip surface 225 of the horizontal bar part 222.

[0039] 4 is fitted into the cylindrical space of the rim 120, the elastic deformation portion 32 causes a semicircularly curved portion at the tip (hereinafter referred to as the semicircularly curved portion) to protrude radially and outwardly of the rim 120 beyond the block member 22. Also, the elastic deformation portion 32 has the convex side of the semicircularly curved portion facing outward.

[0040] In contrast, the rim 120 has rim flanges 121, 122 for holding the edges of the tire at both ends in the direction of the cylindrical axis A. Of these rim flanges 121, 122, the inner wall of the rim flange 121 facing the outside of the vehicle of the large work vehicle 100 has a recess 123 (also referred to simply as an inner wall portion in the claims) that is recessed radially and outwardly of the rim 120 as it moves toward the center in the direction of the cylindrical axis A of the rim 120.

[0041] The semicircular curved portion at the tip of the elastic deformation portion 32 is curved with a radius larger than the concaveness of the recess 123. As a result, when the block member 22 is fitted into the cylindrical space of the rim 120, the elastic deformation portion 32 abuts the convex surface of the semicircular curved portion against the recess 123. The semicircular curved portion then abuts against the recess 123 and is elastically deformed. This causes the elastic deformation portion 32 to press against the recess 123 with its elastic force. As a result, the elastic deformation portion 32 presses the inner wall of the rim flange 121, in other words, the rim 120, radially outward.

[0042] As described above, in the base member 20, as shown in FIG. 2, two block members 22 form a pair with the center C of the ring of the base member 20 in between. When the block members 22 are fitted into the cylindrical space of the rim 120 to determine the position of the base member 20 relative to the rim 120, the center C is on the cylindrical axis A as shown in FIG. 3. Furthermore, as shown in FIG. 4, a locking piece 30 is attached to each of the block members 22. As a result, the locking pieces 30 also form a pair with the cylindrical axis A in between. Although not shown in FIG. 4, the elastically deformable parts 32 also form a pair with the cylindrical axis A in between. The elastically deformable parts 32 press the rim 120 radially and outward, and press each other in opposite directions. As a result, as shown in FIG. 4, the locking pieces 30 are locked to the rim 120 in a state of being disposed equidistant from the cylindrical axis A around the cylindrical axis A. As a result, the block member 22 and the base member 20 are fixed to the rim 120. As described above, the base member 20 supports the protector 10. Therefore, when the base member 20 is fixed to the rim 120, the protector 10 covers the sidewall of the tire. This protects the sidewall of the tire.

[0043] In the above embodiment, the protector 10 is described as being attached to the base member 20 in advance, but the protector 10 may be attached to the base member 20 after the block member 22 is fitted into the cylindrical space of the rim 120 and the locking piece 30 is locked to the rim 120.

[0044] In addition, in the above embodiment, the two block members 22 and the two locking pieces 30 face each other across the cylindrical axis A to form a pair, but when there are three or more block members 22 and locking pieces 30, they need only be arranged at approximately equal angles around the cylindrical axis A and approximately equal distances from the cylindrical axis A, in which case they do not need to be paired. Naturally, the number of block members 22 and locking pieces 30 does not need to be the same as in the embodiment, and it is sufficient if there are only a plurality of each.

[0045] As described above, in the sidewall protection device 1 according to the embodiment, each of the locking pieces 30 is engaged with the rim 120 simply by abutting the respective locking pieces 30 against the inner peripheral surface of the rim 120 and pressing the respective locking pieces 30 radially and outwardly against the inner peripheral surface of the rim 120. This makes it easy to attach the sidewall protection device 1 to the rim 120. Furthermore, because each of the locking pieces 30 presses the inner peripheral surface of the rim 120 radially and outwardly, the sidewall protection device 1 is unlikely to come off the rim 120 and is reliably attached.

[0046] Each of the locking pieces 30 is made of an elastically deformable metal material. Therefore, in the sidewall protecting device 1, the locking pieces 30 can be locked to the rim 120 simply by elastically deforming each of the locking pieces 30 and bringing them into contact with the inner peripheral surface of the rim 120. As a result, the sidewall protecting device 1 can be easily attached to the rim 120. In addition, because each of the locking pieces 30 continues to be locked to the rim 120 by elastic force, the sidewall protecting device 1 is less likely to slip off or come off the rim 120.

[0047] Each of the locking pieces 30 has an elastically deformable portion 32 formed in the shape of an arc-shaped plate, more specifically a semicircular plate. Since the locking pieces 30 can be inserted into the cylindrical space of the rim 120 with the arc-shaped convex surface of the elastically deformable portion 32 facing the inner circumferential surface of the rim 120, it is unlikely that the elastically deformable portion 32 will get caught on or collide with the cylindrical end of the rim 120. As a result, the locking pieces 30 can be easily attached to the rim 120.

[0048] The sidewall protection device 1 that was actually manufactured is shown in Figures 9 and 10. Figure 9 is a perspective photographic view of a portion of a rim 120 of a large work vehicle 100 equipped with the sidewall protection device 1. Figure 10 is a front photographic view of the vicinity of a wheel 110 of the large work vehicle 100.

[0049] 9, it can be seen that the sidewall protection device 1 is attached to the rim 120 by the locking piece 30 attached to the block member 22 being locked to the rim 120. And, referring to Fig. 10, it can be seen that the protector 10 of the sidewall protection device 1 covers the sidewall of the tire to protect the sidewall.

[0050] Although the sidewall protection device 1 according to the embodiment of the present invention has been described above, the present invention is not limited thereto. For example, in the embodiment, the base member 20 and the protector 10 are separate bodies, but the base member 20 and the protector 10 may be integrated. In this case, the part in which the base member 20 and the protector 10 are integrally formed may be simply called the protector.

[0051] In the embodiment, each of the locking pieces 30 is attached to each of the block members 22, and as a result, each of the locking pieces 30 is supported by each of the block members 22. However, the present invention is not limited to this. Each of the locking pieces 30 may be directly provided on and supported by the base member 20. In this case, it is preferable that the base portion 31 has a thicker or larger shape than the elastically deforming portion 32. Also, only the elastically deforming portion 32 may be elastically deformable, and the base portion 31 may not be elastically deformable.

[0052] In this specification, being elastically deformable means being capable of elastic deformation to the extent that an elastic force sufficient to prevent the wheel 110 of the vehicle from coming off the rim 120 can be applied to the rim 120 when the wheel 110 rotates.

[0053] In the embodiment, the elastic deformation portion 32 of each of the locking pieces 30 has a plate shape that is curved in a semicircular shape in the opposite direction to the bending direction after being bent by 90 degrees. However, the present invention is not limited to this. In the present invention, the elastic deformation portion 32 may be any portion that protrudes toward the outer periphery of the protector 10, in other words, protrudes radially and outwardly of the rim 120, and elastically deforms upon contact with the inner periphery of the rim 120. For example, it may be any portion that abuts on the inner wall of the rim flange 121 and elastically deforms. Therefore, depending on the shape of the block member 22 and the shape of the base member 20, the elastic deformation portion 32 may not be bent by 90 degrees. For example, the elastic deformation portion 32 may have only a semicircular curved portion. Also, the elastic deformation portion 32 may be curved in a semi-elliptical shape or a parabolic shape. The elastic deformation portion 32 may be curved in another curved shape.

[0054] In the embodiment, an example has been described in which the sidewall protection device 1 is installed on a vehicle that is a large work vehicle 100, but the sidewall protection device 1 can be applied to any vehicle that requires protection of the tire sidewall. For example, the sidewall protection device 1 may be applied to a small work vehicle.

[0055] The present invention allows various embodiments and modifications without departing from the broad spirit and scope of the present invention. The above-described embodiments are for the purpose of explaining the present invention and do not limit the scope of the present invention. In other words, the scope of the present invention is indicated by the claims, not the embodiments. Various modifications made within the scope of the claims and within the scope of the meaning of the invention equivalent thereto are considered to be within the scope of the present invention. [Explanation of symbols]

[0056] 1...Sidewall protection device 10…Protector 20...Base member 21…Screw hole 22...Block member 30…Latching piece 31...Base 32...Elastic deformation portion 33…long hole 100...Large work vehicle 110…Wheels 120…Rim 121,122…Rim flange 123…Recess 221…Vertical bar 222…Horizontal bar 223,224…planes 225…Tip surface A: Cylindrical shaft C…center

Claims

1. A protector having a plate shape capable of covering a sidewall of a tire attached to a wheel of a vehicle; a plurality of locking pieces provided on an inner peripheral portion of the protector that is disposed on the inner peripheral side of the sidewall and capable of being locked to a cylindrical rim of the wheel; Equipped with each of the locking pieces is engaged with the rim by contacting the inner circumferential surface of the rim and pressing the inner circumferential surface of the rim radially outwardly of the rim; The protector is a tire sidewall protection device that covers the sidewall with each of the engagement pieces engaged with the rim.

2. Each of the locking pieces abuts against a rim flange provided on each cylindrical end of the rim from the side of the inner circumferential surface of the rim, and presses the rim flange radially outwardly of the rim, thereby locking to the rim.

2. The tire sidewall protection device of claim 1.

3. Each of the locking pieces is made of an elastically deformable material, and is elastically deformed to come into contact with the rim flange and press the rim flange with its elastic force, thereby locking to the rim.

3. A tire sidewall protection device according to claim 2.

4. The rim flange has an inner wall portion that is recessed radially outwardly of the rim toward a central portion of the rim in a cylindrical axial direction, Each of the locking pieces is A base portion provided on the inner circumferential portion of the protector; an elastically deformable portion that protrudes from the base portion toward an outer circumferential portion of the protector; having the base portion is positioned in a cylindrical space of the rim, the elastic deformation portion protrudes from the base portion in a radial direction of the rim and outwardly, and the elastic deformation portion elastically deforms to abut against the inner wall portion of the rim flange, thereby engaging with the rim. A tire sidewall protection device according to claim 2 or 3.

5. The elastic deformation portion has a metal plate having a convex surface that protrudes in an arc shape by being bent into an arc shape, and by elastically deforming with the convex surface facing radially outward of the rim, the convex surface abuts against the inner wall portion of the rim flange and engages with the rim flange.

5. A tire sidewall protection device according to claim 4.

6. A base member having an annular shape, arranged concentrically with the cylinder of the rim, and in contact with rim flanges provided on both ends of the cylinder of the rim from the side of the cylindrical end of the rim, The protector is attached to the base member and supported by the base member, The plurality of locking pieces are provided at equal intervals in a circumferential direction of the ring of the base member.

2. The sidewall protection device of claim 1.

7. A vertical rod portion supported on a toric surface of the base member; A horizontal bar portion extending perpendicular to the vertical bar portion and supporting the locking piece; Further comprising a block member having 7. The sidewall protection device of claim 6.

Images