KR20220069167A - Non-pneumatic tire - Google Patents

Abstract

The present invention relates to a non-pneumatic tire. More specifically, the present invention relates to a non-pneumatic tire which is easily replaceable. According to the present invention, the non-pneumatic tire may comprise: an outer ring part; an inner ring part placed on an inner side surface of the outer ring part and including a plurality of indented parts formed by being indented in a horizontal direction; a wheel disk part including a plurality of first hollow parts including parts extended in the horizontal direction, and rotating in accordance with the rotation of an axle; a gear disk part including a plurality of second hollow parts crossing the first hollow parts, and having a first gear part on an edge; a rotating part rotating the gear disk part; a guide rod part penetrating the first hollow parts and the second hollow parts to connect the wheel disk part and the gear disk part, and moving along the first hollow parts and the second hollow parts in accordance with the rotation of the gear disk part; and a clamping part having the guide rod part fixed thereto and including, on one side end thereof, a part corresponding to the indented parts of the inner ring part.

Description

Non-Pneumatic Tire {NON-PNEUMATIC TIRE}

The present invention relates to a pneumatic tire.

More particularly, the present invention relates to a non-pneumatic tire that is easy to replace.

In general, tires may be mounted on wheels of various vehicles, from small vehicles to heavy-duty vehicles.

Such a tire may perform a function of supporting the load of the vehicle, a function of transmitting the power of the vehicle to the ground, and a function of buffering vibrations and shocks generated during vehicle driving.

Conventionally, most vehicles have used pneumatic tires.

In the case of a pneumatic tire, a pneumatic pressure is provided inside, which has an excellent effect of buffering against collision and flexing, but there is a problem in that the tire is easily damaged due to puncture or impact by an external material.

If the tire is damaged, it may be difficult to maintain the internal air pressure, which may reduce the handling and braking ability of the vehicle and cause safety problems.

To solve this problem, a non-pneumatic tire that does not require air filling inside has been developed.

Most of the conventional non-pneumatic tires are one-piece, in which the wheel and the tire are integrated.

The wheel portion of such an integral pneumatic tire may have a shape similar to a wheel used in a conventional pneumatic tire. Accordingly, in the case of the integrated non-pneumatic tire, when the wheel is removed from the vehicle or mounted on the vehicle, a plurality of wheel nuts must be loosened or assembled, which requires manpower and time.

In addition, in the case of an integrated non-pneumatic tire, there is a problem in that resources are wasted severely because even a wheel part must be replaced when replacing.

In order to solve this problem, in Korean Patent Laid-Open Publication No. 10-2015-0129140 [Document 1], a non-pneumatic tire includes a tread part, a buffer part coupled with the tread part, and a rim coupled with the buffer part, wherein the tread part It is divided into 2 to 8 parts and posted a technical configuration with a detachable structure in the buffer part.

In the non-pneumatic tire according to Document 1, there is a problem that the operation is cumbersome, complicated, and takes a lot of time, such as the need to use a plurality of fastening means such as bolts in the process of coupling 2 to 8 divided parts to the buffer unit.

As another prior art for a non-pneumatic tire, Korean Patent Publication No. 10-1692258 [Document 2] discloses a technical configuration in which a plurality of tread rubber blocks are vertically inserted into a tire body part.

However, in the non-pneumatic tire according to Document 2, there is a problem that the operation is complicated and time consuming because a plurality of tread rubber blocks must be separately worked.

In addition, in the non-pneumatic tire according to Document 2, there is a problem in that the tread portion is composed of a plurality of independent tread rubber blocks, so that the structural stability of the tread portion is relatively weak.

[Document 1] Republic of Korea Patent Publication No. 10-2015-0129140 [Document 1] [Document 2] Republic of Korea Patent Publication No. 10-1692258 [Document 2]

An object of the present invention is to provide a non-pneumatic tire having excellent structural stability and easy replacement.

An object of the present invention is to provide a non-pneumatic tire in which a tire part is replaceable and a wheel part is reusable.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. There will be.

The non-pneumatic tire according to the present invention is disposed on an outer ring part including a part corresponding to the ground, an inner side surface of the outer ring part, and is depressed in a horizontal direction that intersects the axle A plurality of first grooves (Inner Ring Part) including a plurality of depressions formed by First Hollow Part), including a wheel disk part rotating according to the rotation of the axle, a plate-shaped part, and a plurality of corresponding to the first groove part and intersecting the first groove part It includes a second groove part (Second Hollow Part), a first gear part (First Gear Part) is formed on the edge, a gear disk part corresponding to the front surface of the wheel disk part (Gear Disk Part), the gear A rotating part for rotating the disk part, the first groove part and the second groove part pass through to connect the wheel disk part and the gear disk part, and the first groove part and the second groove part according to the rotation of the gear disk part A guide rod part moving along the part and the guide rod part are fixed, and move in the horizontal direction according to the rotation of the gear disk part, one end including a part corresponding to the recessed part of the inner ring part It may include a clamping part.

In addition, the clamping part includes a leg part including a part extending in the horizontal direction, and a head part connected to an end of the leg part and corresponding to the recessed part of the inner ring part, and the guide rod The part may be fixed to the leg part, and the outer surface of the head part may include a part having a convex shape toward the outside.

In addition, disposed on the rear surface of the wheel disk portion, including a portion located at the edge of the first groove portion to prevent separation of the leg portion, including a portion open to the outside in the horizontal direction It may further include a guide rail part (Guide Rail Part).

In addition, a width of the head in a vertical direction parallel to the axle may be greater than a width from the guide rod portion to the guide rail portion, and may be smaller than a width of the inner ring portion.

In addition, the length of the second groove portion is longer than the length of the first groove portion, one end of the first groove portion corresponds to one end of the second groove portion, and the other end of the first groove portion is the second groove Corresponding to the other end of the portion, one end of the second groove portion is closer to the center of the gear disk portion than the other end of the second groove portion, the second groove portion may include a curved portion.

In addition, when a straight line passing through the center of the gear disk and the midpoint between the one end and the other end of the second groove in the horizontal direction is a first straight line, in the portion adjacent to one end of the second groove An angle between the traveling direction and the first straight line may be smaller than an angle between the traveling direction and the first straight line in a portion adjacent to the other end of the second groove portion.

In addition, when the guide rod part is adjacent to or corresponding to the other end of the second groove part and/or the other end of the first groove part, at least a part of one end of the clamping part is inserted into the recessed part, and the guide rod part When adjacent to or corresponding to one end of the second groove portion and/or one end of the first groove portion, one end of the clamping portion may be separated from the recessed portion.

In addition, the rotating part includes a second gear part meshing with the first gear part of the gear disk part and a sub rotating part rotating the second gear part, and the second gear part It may be a worm gear type.

In addition, a diameter of the wheel disk part may be greater than a diameter of the gear disk part, a diameter of the inner ring part may be greater than a diameter of the wheel disk part, and the sub-rotation part may be fixed to a front surface of the wheel disk part.

In addition, the width of the depression in the circumferential direction from the inner surface of the inner ring portion may be greater than a distance between the two adjacent depressions.

The non-pneumatic tire according to the present invention has the effect of shortening the working time because it is easy to replace the tire.

The non-pneumatic tire according to the present invention has the effect of reducing the consumption of resources and lowering the unit price because the wheel part is reusable.

Since the non-pneumatic tire according to the present invention has an integrated structure while the tire part is replaceable separately from the wheel part, structural stability is improved, thereby increasing the lifespan.

It should be understood that the effects of the present invention are not limited to the above-described effects, and include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 to 2 are views for explaining the outer ring portion and the inner ring portion.
3 to 4 are views for explaining the wheel disk unit.
5 to 7 are views for explaining the gear disk unit.
8 to 11 are views for explaining the guide rod part and the clamping part.
12 to 15 are views for explaining the guide rail unit.
16 to 19 are views for explaining the rotating part.
20 to 25 are diagrams for explaining in detail the function and operation of the clamping unit.
26 is a view for explaining a wheel cover.

Hereinafter, a non-pneumatic tire according to the present invention will be described in detail with reference to the accompanying drawings.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the present invention to a specific embodiment, it can be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

In describing the present invention, terms such as first, second, etc. may be used to describe various components, but the components may not be limited by the terms. The above terms may be used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

The term and/or may include a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but other components may exist in between. can be understood On the other hand, when an element is referred to as being “directly connected” or “directly connected” to another element, it may be understood that the other element does not exist in the middle.

The terms used in this document are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression may include the plural expression unless the context clearly dictates otherwise.

In this document, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and one or more other features It may be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary may be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, it is interpreted in an ideal or excessively formal meaning. it may not be

In addition, the embodiments disclosed in this document are provided to more completely explain to those with average knowledge in the art, and the shapes and sizes of elements in the drawings may be exaggerated for clearer explanation.

In describing the present invention in this document, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description may be omitted.

Before describing the non-pneumatic tire according to the present invention, the direction is first summarized as follows.

First, a direction parallel to (or parallel to) an axle (not shown) may be referred to as a vertical direction (DRV).

In addition, the direction (or vertical direction) crossing the axle may be referred to as a horizontal direction (Horizontal Direction, DRH).

Such a horizontal direction (DRH) may be referred to as a direction in which the non-pneumatic tire intersects (vertically) and radiates from the center of the tire, that is, the radial direction.

In addition, the direction along the circumference with respect to the center of the non-pneumatic tire may be referred to as the circumferential direction. Here, the direction along the circumference may include, for example, a direction along the circumference of the outer ring portion, a direction along the circumference of the inner ring portion, a direction along the circumference of the wheel disk portion, and/or a direction along the circumference of the gear disk portion.

The non-pneumatic tire according to the present invention includes an outer ring part, an inner ring part, a wheel disk part, a gear disk part, a rotating part (Rotating Part), and a guide rod. It may include a part (Guide Rod Part) and a clamping part (Clamping Part).

In addition, the non-pneumatic tire according to the present invention may further include a guide rail part.

Each component of the non-pneumatic tire having such a configuration will be described in detail below.

1 to 2 are views for explaining the outer ring portion and the inner ring portion.

Referring to FIG. 1A , the outer ring portion 10 may include a portion corresponding to the ground. In other words, the outer ring portion 10 may include a portion in contact with the ground.

The outer ring portion 10 may include a rubber composition having excellent wear resistance in order to respond to friction with the ground.

In addition, on the outer side surface of the outer ring part 10 , that is, the ground surface, a tread groove (not shown) for imparting wet performance may be formed in one or more pattern shapes.

A portion of the outer ring portion 10 corresponding to the ground may be referred to as a tread part.

Although the identification code is not designated, the outer ring part 10 may serve as a cushioning material by dispersing and absorbing the impact applied to the non-pneumatic tire, and may include a structure that serves to support the load of the vehicle.

Such a structure may be referred to as a spoke part.

The outer ring part 10 may include a resin material, for example, a thermoplastic resin and/or a thermosetting resin, in order to effectively absorb an impact and support the load of the vehicle. From the viewpoint of safety, the outer ring part 10 may include at least one material selected from a thermosetting resin, such as an epoxy resin, a phenolic resin, a polyurethane resin, a silicone resin, a polyimide resin, and/or a melamine resin.

In addition, the material of the outer ring part 10 is the above-described resin material, rubber, carbon fiber reinforced plastic (CFRP), glass fiber reinforced plastic (Glass Fiber Reinforced Plastic, GFRP), steel (Steel) And it may include any one material selected from the spring steel (Spring Steel) or two or more selected materials.

In consideration of the above, the outer ring portion 10 may be viewed as including a tread portion and a spoke portion.

The inner ring portion 11 may be disposed on an inner side surface of the outer ring portion 10 . For example, the outer surface OSS of the inner ring portion 11 may be strongly fixed to the inner surface of the outer ring portion 10 through an adhesive or the like.

The inner ring portion 11 may include a portion having a substantially circular cross-section in a horizontal direction (DRH) intersecting an axle (not shown).

The outer ring portion 10 and the inner ring portion 11 may also be viewed as including a portion forming a concentric circle shape.

Referring to FIGS. 1A and 1B , a plurality of depressions 11a recessed in the horizontal direction DRH intersecting the axle (not shown) are formed on the inner surface ISS of the inner ring part 11 . can

This depression 11a may correspond to a part of a clamping part (not shown) to be described below, for example, a head part (not shown). Such a configuration may be more clarified through the following description.

An identification symbol R1 not described in FIG. 1 may indicate a diameter (inner diameter) of the inner ring portion 11 , and T3 may indicate a width of the inner ring portion 11 in the vertical direction DRV.

Referring to FIG. 2 , the width W1 of the depression 11a in the circumferential direction from the inner surface ISS of the inner ring 11 may be greater than the interval W2 between the two adjacent depressions 11a. have.

In other words, it can be said that the total width of the portion occupied by the plurality of recessed portions 11a in the circumferential direction on the inner surface of the inner ring portion 11 is greater than the total width of the other portions.

In this case, it is possible to sufficiently disperse the stress.

2 shows the form in which the inner ring part 11 is spread out in the horizontal direction (DRH).

It is possible to call the outer ring portion 10 and the inner ring portion 11 described above as a 'tire part'.

Hereinafter, the wheel disk part, the gear disk part, the rotating part, the clamping part, the guide rod part, and the guide rail part will be described.

The wheel disc part, the gear disc part, the rotating part, the clamping part, the guide rod part, and the guide rail part may be collectively referred to as a 'wheel part'.

The arrangement of the tire part and the wheel part is set to help explanation and understanding, and the present invention may not be limited thereto.

3 to 4 are views for explaining the wheel disk unit. Hereinafter, a description of the part described in detail above may be omitted.

3 and 4 , the wheel disk unit 20 may include a portion connected to the axle AX. In other words, the wheel disk unit 20 may be connected to the axle AX for transmitting the rotational force provided by the engine (not shown) or the motor of the vehicle to the non-pneumatic tire.

Accordingly, the wheel disk unit 20 may rotate in response to the rotation of the axle shaft AX.

The wheel disk part 20 may be connected to the axle shaft AX by the axle connection part 25 . In this case, it is possible for a predetermined fastening means 24 to connect the axle connection part 25 and the wheel disk part 20 through the center hole 22 .

The axle connection part 25 may be located on the rear surface (RS) side of the wheel disk part 20 .

Under the condition that the wheel disk part 20 rotates in response to the rotation of the axle shaft AX, the connection method between the axle shaft AX and the wheel disk part 20 may be variously changed. For example, it may be possible to change the shape or structure of the axle connection part 25 or to omit the axle connection part 25 under the condition that the wheel disk part 20 rotates according to the rotation of the axle shaft AX.

The wheel disk unit 20 may include a portion having a plate shape. For example, the wheel disk unit 20 may include a portion having a disk shape.

The wheel disk unit 20 may include a metal material such as steel, an aluminum alloy, or a magnesium alloy.

The wheel disk part 20 may include a plurality of first hollow parts 21 including parts extending in the horizontal direction DRH.

The plurality of first grooves 21 may be formed in such a way that a portion of the wheel disk unit 20 is opened in the vertical direction DRV. In consideration of this, the first groove portion 21 may be referred to as a first hole.

In addition, the plurality of first grooves 21 may be formed in a shape radiating from the center (center hole 22) toward the rim on the wheel disk unit 20 .

The number of the first groove portions 21 formed in the wheel disk portion 20 may be variously changed. The number of second grooves (not shown), which will be described later, may match the number of first grooves 21 .

Identification number 23, not described in FIGS. 3 to 4, denotes a hole for installing a rotation part to be described later, that is, a rotation hole, and L1 denotes the length of the first groove part 21 in the horizontal direction (DRH), R2 may represent the diameter of the wheel disk unit 20 .

The inner ring part 11 may be disposed to surround the circumference of the wheel disk part 20 . In consideration of this, the diameter R2 of the wheel disk part 20 may be smaller than the diameter (inner diameter) R1 of the inner ring part 11 .

5 to 7 are views for explaining the gear disk unit. Hereinafter, a description of the part described in detail above may be omitted.

Referring to FIG. 5 , the gear disk unit 30 may include a portion having a plate shape. For example, the gear disk unit 30 may include a portion having a disk shape.

The gear disk unit 30 may include a metal material such as steel, an aluminum alloy, or a magnesium alloy.

The gear disk unit 30 may correspond to a front surface (FS) of the wheel disk unit 20 . In other words, the gear disk part 30 may be disposed on the front surface FS side of the wheel disk part 20 .

A first gear part (First Gear Part, G1) having a gear shape may be formed on the edge of the gear disk part 30 .

In addition, the gear disk portion 30 may include a plurality of second groove portions (Second Hollow Part, 31) corresponding to the first groove portion (21).

The second groove portion 31 may partially overlap the first groove portion 21 , and may intersect the first groove portion 21 .

The plurality of second grooves 31 may be formed in such a way that a portion of the gear disk unit 30 is opened in the vertical direction DRV. In consideration of this, the second groove portion 31 may be referred to as a second hole.

Here, the length L2 of the second groove part 31 may be different from the length L1 of the first groove part 21 of the wheel disk part 20 described above. Preferably, the length L2 of the second groove portion 31 may be longer than the length L1 of the first groove portion 21 . In this case, it may be possible to sufficiently move the end (head) of the clamping part, which will be described later, to the recessed part 11a of the inner ring part 11 .

The diameter R3 of the gear disk part 30 may be smaller than the diameter R2 of the wheel disk part 20 .

In this case, a rotating part (not shown), which will be described later, can be easily installed on the front surface FS of the wheel disk part 20 .

Referring to FIG. 6 , the second groove part 31 formed in the gear disk part 30 may include a curved part. In this case, the guide rod part may move smoothly according to the rotation of the gear disk part 30 .

Looking at the curved second groove part 31 in more detail, the second groove part 31 has one end (first end, E1) adjacent to the center of the gear disk part 30 and the other end (first end) opposite to the one end. 2 ends, E2).

Assume that a straight line passing through the center of the gear disk part 30 and the midpoint between the one end E1 and the other end E2 of the second groove part 31 in the horizontal direction DRH is the first straight line SL1. lets do it.

Here, the angle θ1 between the traveling direction and the first straight line SL1 in the portion adjacent to the one end E1 of the second groove portion 31 is the portion adjacent to the other end E2 of the second groove portion 31 . It may be smaller than the angle θ2 between the traveling direction and the first straight line SL1.

From another point of view, it can also be seen that the second groove part 31 is bent so that the moving direction of the second groove part 31 increases the angle with the first straight line SL1 from the center to the edge of the gear disk part 30 .

As such, even when the second groove portion 31 includes a bent portion, the total length L3 of the second groove portion 31 may be longer than the length of the first groove portion 21 .

On the other hand, the gear disk part 30 can be rotated by a rotating part (not shown) to be described below, and the first groove part 21 and the second groove part 31 overlap according to the rotation of the gear disk part 30 . The overlapping part, that is, the overlapping part may be different.

For example, as shown in FIG. 7A , in the first state, a portion adjacent to one end E1 of the second groove 31 may overlap the first groove 21 . have. 7 (A) and (B), the wheel disk unit 20 is indicated by a dotted line.

On the other hand, as shown in FIG. 7B , in the second state, a portion adjacent to the other end E2 of the second groove portion 31 may overlap the first groove portion 21 . .

The second state may correspond to a case in which the gear disk unit 30 rotates at a predetermined angle in the first state. The rotation direction of the gear disk part 30 is indicated by an arrow in FIG. 7B.

Here, it is assumed that one end adjacent to the center of the wheel disk unit 20 among both ends of the first groove portion 21 is referred to as one end, and the other end is referred to as the other end. From another perspective, one end of the first groove portion 21 corresponds to one end of the second groove portion 31 , and the other end of the first groove portion 21 corresponds to the other end of the second groove portion 31 . can be seen as

In this case, in the first state of FIG. 7A , a portion adjacent to one end of the first groove portion 21 overlaps a portion adjacent to one end E1 of the second groove portion 31, and in FIG. In the second state of (B), it can be seen that the portion adjacent to the other end of the first groove portion 21 overlaps the portion adjacent to the other end E2 of the second groove portion 31 .

As such, the difference in the overlapping portions of the first groove portion 21 and the second groove portion 31 will be described below, but the guide rod portion (not shown) passing through the first groove portion 21 and the second groove portion 31 is It may mean that the location is changed.

Referring to the accompanying FIGS. 8 to 11 with respect to the guide rod portion as follows.

8 to 11 are views for explaining the guide rod part and the clamping part. Hereinafter, a description of the part described in detail above may be omitted.

The clamping part 40 may be located on the rear surface RS of the wheel disk part 20 .

The clamping part 40 may move in the horizontal direction DRH according to the rotation of the gear disk part 30 , and one end may include a portion corresponding to the recessed part 11a of the inner ring part 11 .

The clamping part 40 may include, as shown in FIG. 8 , a leg part 41 and a head part 42 .

The leg part 41 may include a portion extending in the horizontal direction DRH.

A guide hole 43 through which the guide rod part 50 is connected may be formed in the leg part 410 .

The head part 42 is connected to the end of the leg part 41 , and may correspond to the depression part 11a of the inner ring part 11 . From another point of view, at least a portion of the head 420 may be inserted into the depression 11a of the inner ring 11 .

In this case, the wheel portion and the tire portion may be strongly coupled.

Referring to FIG. 9 , the guide rod part 50 may include an intermediate part 52 , a connection part 53 , and a locking part 51 .

Here, the connection part 53 may be inserted into the guide hole 43 formed in the leg part 41 of the clamping part 40 . Accordingly, the guide rod part 50 may be fixed to the clamping part 40 .

The engaging portion 51 may be a portion caught in the gear disk unit 30 . To this end, it may be preferable that the diameter of the engaging portion 51 is larger than the width of the second groove portion 31 formed in the gear disk portion 30 .

The intermediate portion 52 may be a portion passing (through) the second groove portion 31 of the gear disk portion 30 and the first groove portion 21 of the wheel disk portion 20 .

A state in which the guide rod part 50 is connected to the clamping part 40 is shown in FIG. 10 .

Referring to FIG. 10 , the clamping part 40 , the wheel disc part 20 , and the gear disc part 30 are sequentially positioned, and the guide rod part 50 passes through the first groove part 21 and the second groove part 31 . to be connected to the clamping unit 40 .

In this state, the guide rod part 50 may move along the first groove part 21 and/or the second groove part 31 .

As such, the guide rod part 50 may connect the wheel disk part 20 and the gear disk part 30 through the first groove part 21 and the second groove part 31 . In addition, the guide rod part 50 may move along the first groove part 21 and/or the second groove part 31 according to the rotation of the gear disk part 20 .

As such, when the guide rod part 50 moves along the first groove part 21 and/or the second groove part 31 , the clamping part 40 connected to the guide rod part 50 may also move.

Referring to FIG. 11 , the outer surface of the head 42 of the clamping part 40 , that is, the surface facing outward in the horizontal direction DRH may include a portion CVP having a convex shape toward the outside. A portion having a convex shape of the head portion 42 may be referred to as a convex portion CVP.

The curvature of the convex portion CVP of the head 42 may be substantially similar to or the same as the curvature of the concave portion 11a of the inner ring portion 11 .

12 to 15 are views for explaining the guide rail unit. Hereinafter, a description of the part described in detail above may be omitted.

Referring to FIG. 12 , the guide rail unit 60 may have a shape of a Korean consonant 'c' or an uppercase letter 'U'. As such, the guide rail unit 60 may have an open shape at one side.

The guide rail unit 60 may guide the clamping unit 40 . In detail, the guide rail part 60 may prevent the leg part 41 of the clamping part 40 from being separated.

To this end, as shown in FIGS. 13A and 13B , one guide rail part 60 may correspond to one first groove part 21 .

From another point of view, the guide rail unit 60 may be disposed to surround the first groove unit 21 on the rear surface RS of the wheel disk unit 20 .

From another point of view, the guide rail part 60 includes a portion positioned at the edge of the first groove part 21 on the rear surface RS of the wheel disk part 20 in order to prevent the leg part 41 from being separated. can do.

In addition, the open portion of the guide rail unit 60 may face outward in the horizontal direction DRH.

A state in which the guide rail part 60 and the clamping part 40 are disposed on the rear surface RS of the wheel disk part 20 are shown in FIGS. 14 to 15 .

14 is a view showing a state in which the wheel disc part 20, the gear disc part 30, the guide rail part 60, and the clamping part 40 are combined as viewed from the rear surface RS of the wheel disc part 20; and FIG. 15 shows a state in which the wheel disk part 20, the gear disk part 30, the guide rail part 60 and the clamping part 40 are coupled to the front surface FS of the wheel disk part 20, that is, the gear It is a view showing the view from the front of the disk unit (30).

Referring to FIG. 14 , it can be seen that the leg part 41 of the clamping part 40 is fitted from the open part of the guide rail part 60 .

Accordingly, as shown in FIGS. 14 to 15 , the head part 42 of the clamping part 40 may protrude (or be exposed) from the open part of the guide rail part 60 . In addition, the head portion 42 of the clamping portion 40 may protrude (or exposed) more than the side surface of the wheel disk portion 20 in the circumferential direction.

16 to 19 are views for explaining the rotating part. Hereinafter, a description of the part described in detail above may be omitted.

The rotating unit 70 may rotate the gear disk unit 30 .

The rotating part 70 may include, as shown in FIG. 16 , a second gear part (G2, 71) and a sub rotating part (Sub Rotating Part, 72).

The second gear parts 71 and G2 may be rotated in engagement with the first gear part G1 of the gear disk part 30 . Any of these second gear parts 71 and G2 may be applied as long as they can rotate while being engaged with the first gear part G1. For example, in consideration of the user's working position, working direction, and the structure of the first gear unit G1 , it may be preferable that the second gear units 71 and G2 be a worm gear type.

The sub-rotation unit 72 may rotate the second gear units 71 and G2.

This sub-rotation unit 72, for example, as shown in FIG. 17, a first bevel gear (First Bevel Gear, 73) of a bevel gear type and a second bevel gear (Second Bevel Gear, 74) may include

Second gear parts 71 and G2 may be formed on the rotation shaft of the first bevel gear 73 . That is, at least a portion of the rotation shaft of the first bevel gear 73 may be used as the second gear unit 71 , G2 .

Here, when the rotation shaft 75 of the second bevel gear 74 is rotated using a predetermined mechanism, the first bevel gear 73 and the second gear parts 71 and G2 formed on the rotation shaft may rotate. .

Then, the gear disk part 30 including the first gear part G1 meshed with the second gear parts 71 and G2 may rotate.

As shown in FIG. 18 , the rotating part 70 may be disposed on the edge of the front surface FS of the wheel disk part 20 .

For example, although not shown, the sub-rotation unit 72 of the rotating unit 70 may be fixed to the rotating hole formed at the edge of the wheel disk unit 20 by fastening means such as a screw.

To this end, it may be preferable that the diameter R2 of the wheel disk portion 20 is larger than the diameter R3 of the gear disk portion 30 so that the edge of the wheel disk portion 20 is exposed.

The rotation hole has been previously described with reference to FIG. 3 .

Considering that the first gear part G1 of the gear disc part 30 is meshed with the second gear parts 71 and G2 of the rotating part 70 , the gear disc part 30 is rotated by the rotating part 70 . If it is, it is possible to form the first gear part G1 only in a partial area of the edge of the gear disk part 30 .

For example, as shown in FIG. 19 , the first gear part G1 is formed in the first area AR1 of the edge of the gear disk part 30 , and the remaining area of the edge of the gear disk part 30 . The first gear part G1 may not be formed.

20 to 25 are diagrams for explaining in detail the function and operation of the clamping unit. Hereinafter, a description of the part described in detail above may be omitted.

Considering that at least a portion of the head portion 42 of the clamping portion 40 is inserted into the recessed portion 11a of the inner ring portion 11, the vertical direction DRV of the head portion 42 of the clamping portion 40 is The width T2 of the furnace may be smaller than the width T1 of the inner ring part 11 in the vertical direction DRV.

On the other hand, in order to relatively increase the area of the portion where the head portion 42 of the clamping portion 40 abuts against the inner ring portion 11, as shown in FIGS. 20 to 21 , the head of the clamping portion 40 is It may be desirable that the width T2 of the portion 42 in the vertical direction DRV is sufficiently large.

In detail, as shown in FIG. 21 , the width T2 of the head 42 in the vertical direction DVR is larger than the width T3 from the guide rod 50 to the guide rail 60 . can

In addition, the head part 42 of the clamping part 40 may protrude more than the guide rod part 50 toward the front in the vertical direction DRV, and may protrude more than the guide rail part 60 toward the rear.

Here, the front may be a direction in which the front surface FS of the wheel disk unit 20 faces, and the rear may be referred to as a direction in which the rear surface RS of the wheel disk unit 20 faces.

The head part 42 of the clamping part 40 is capable of moving in the horizontal direction DRH in response to the rotation of the gear disk part 30 . In this regard, referring to FIGS. 22 and 23 , it is as follows. In addition, in order to help understanding, further reference will be made to the preceding FIG. 7 and related contents as necessary.

22(A) and (B) show an example of a case in which the guide rod part 50 is positioned adjacent to one end E1 of the second groove part 31 in the first state. In this case, the guide rod part 50 can also be viewed as a case where it is positioned adjacent to one end of the first groove part 21 .

This first state has been previously described in (A) of FIG. 7 .

7 (A) and 22 (A) and (B) are considered together, the portion adjacent to one end E1 of the second groove portion 31 and the first groove portion 21 in the first state It can be seen that parts adjacent to one end overlap each other, and the guide rod part 50 is positioned at a part where the second groove part 31 and the first groove part 21 overlap.

In this first state, the head 42 of the clamping part 40 may be positioned adjacent to the edge of the wheel disk part 20 .

In this state, when the rotating part 70 rotates the gear disk part 30 , the guide rod part 50 may move outwardly along the second groove part 31 and the first groove part 21 . This state may be referred to as a second state.

23 (A) and (B) show an example of a case in which the guide rod part 50 is positioned adjacent to the other end E2 of the second groove part 31 in the second state. In this case, the guide rod part 50 may also be viewed as a case in which the guide rod part 50 is positioned adjacent to the other end of the first groove part 21 .

This second state has been previously described in (B) of FIG. 7 .

7(B) and 23(A) and (B) of the preceding FIGS. It can be seen that parts adjacent to the other end overlap each other, and the guide rod part 50 is positioned at a part where the second groove part 31 and the first groove part 21 overlap.

In this second state, the head 42 of the clamping unit 40 may move away from the rim of the wheel disk unit 20 in the horizontal direction DRH.

As such, when the head 42 of the clamping part 40 moves away from the rim of the wheel disk part 20 in the horizontal direction DRH in the second state, as shown in FIGS. 24 to 25 , At least a portion of the head portion 42 may be inserted into the depression portion 11a of the inner ring portion 11 .

Summarizing the above, when the guide rod part 50 is adjacent to or corresponds to the other end E2 of the second groove part 31 and/or the other end of the first groove part 21, the clamping part 40 is One end, that is, at least a part of the head portion 42 may be inserted into the recessed portion 11a of the inner ring portion 11 .

As such, when at least a part of the head 42 of the clamping part 40 is inserted into the recessed part 11a of the inner ring part 11, the tire part and the wheel part are coupled to thereby convert the rotational force transmitted from the axle to the tire part; That is, it is possible to transmit to the inner ring portion 11 and the outer ring portion 10 . In this case, normal driving of the vehicle may be possible.

On the other hand, when the guide rod part 50 is adjacent to or corresponding to one end E1 of the second groove part 31 and/or one end of the first groove part 21, one end of the clamping part 40, That is, the head portion 42 may be separated from the depression portion 11a of the inner ring portion 11 .

As such, in a state in which the head portion 42 of the clamping portion 40 is separated from the depression portion 11a of the inner ring portion 11, it is possible to replace the tire portion, that is, the outer ring portion 10 and the inner ring portion 11. do.

As described in detail above, in the non-pneumatic tire according to the present invention, it is possible to couple or separate the tire part and the wheel part only by rotating the gear disk part 30 using the rotating part 70 .

Accordingly, in the non-pneumatic tire according to the present invention, since only the tire part can be replaced, the wheel part can be reused.

In addition, in the non-pneumatic tire according to the present invention, it is possible to reduce the time required for mounting and replacing the tire part, and it is possible to simplify the installation and replacement of the tire part.

26 is a view for explaining a wheel cover. Hereinafter, a description of the part described in detail above may be omitted.

Referring to FIG. 26 , the non-pneumatic tire according to the present invention may further include a wheel cover 80 .

The wheel cover 80 may be disposed to cover the gear disc part 30 and the wheel disc part 20 from the front of the non-pneumatic tire.

For example, the wheel cover 80 may be fastened to the wheel disk unit 20 .

As such, those skilled in the art to which the present invention pertains will understand that the above-described technical configuration of the present invention may be implemented in other specific forms without changing the technical spirit or essential characteristics of the present invention.

Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the foregoing detailed description, and the meaning and scope of the claims And all changes or modifications derived from the equivalent concept should be construed as being included in the scope of the present invention.

Claims (10)

Outer ring part including a portion corresponding to the ground (Outer Ring Part);
It is disposed on the inner surface of the outer ring portion (Inner Side Surface), the inner ring portion (Inner Ring Part) comprising a plurality of depressions formed by depression in the horizontal direction (Horizontal Direction) intersecting the axle;
It includes a part connected to the axle, includes a part having a plate shape, and includes a plurality of first groove parts (First Hollow Part) including a part extending in the horizontal direction, and rotates according to the rotation of the axle Wheel disk part (Wheel Disk part);
It includes a portion having a plate shape, and includes a plurality of second groove portions corresponding to the first groove portion and intersecting the first groove portion, and a first gear portion is formed on the edge. and a gear disk part corresponding to the front surface of the wheel disk part (Gear Disk Part);
a rotating part (Rotating Part) for rotating the gear disk part;
A guide rod that passes through the first groove and the second groove to connect the wheel disk and the gear disk, and moves along the first and second grooves according to the rotation of the gear disk. Part); and
a clamping part in which the guide rod part is fixed, and moves in the horizontal direction according to the rotation of the gear disk part, and one end includes a part corresponding to the depression part of the inner ring part;
A non-pneumatic tire comprising a.
The method of claim 1,
The clamping part
a leg portion including a portion extending in the horizontal direction; and
a head part connected to the end of the leg part and corresponding to the recessed part of the inner ring part;
including,
The guide rod part is fixed to the leg part,
The non-pneumatic tire includes a portion in which the outer surface of the head is convex toward the outside.
3. The method of claim 2,
A guide lever disposed on the rear surface of the wheel disk portion, including a portion positioned at the edge of the first groove portion to prevent separation of the leg portion, and including a portion open to the outside in the horizontal direction A non-pneumatic tire further comprising a part (Guide Rail Part).
4. The method of claim 3,
A width of the head in a vertical direction parallel to the axle is greater than a width from the guide rod portion to the guide rail portion and is smaller than a width of the inner ring portion.
The method of claim 1,
The length of the second groove portion is longer than the length of the first groove portion,
One end of the first groove corresponds to one end of the second groove, the other end of the first groove corresponds to the other end of the second groove,
One end of the second groove portion is closer than the center of the gear disk portion than the other end of the second groove portion,
The second groove portion includes a curved portion of the non-pneumatic tire.
6. The method of claim 5,
When a straight line passing through the center of the gear disk portion and the midpoint between the one end and the other end of the second groove portion in the horizontal direction together is a first straight line,
The angle between the moving direction in the portion adjacent to one end of the second groove and the first straight line is smaller than the angle between the moving direction in the portion adjacent to the other end of the second groove and the first straight line. tire.
6. The method of claim 5,
When the guide rod part is adjacent to or corresponding to the other end of the second groove part and/or the other end of the first groove part, at least a part of one end of the clamping part is inserted into the recessed part,
When the guide rod portion is adjacent to or corresponding to one end of the second groove portion and/or one end of the first groove portion, the one end of the clamping portion is separated from the recessed portion.
The method of claim 1,
the rotating part
a second gear part engaged with the first gear part of the gear disk part (Second Gear Part); and
a sub-rotating part rotating the second gear part;
including,
The second gear unit is a non-pneumatic tire of a worm gear type.
9. The method of claim 8,
The diameter of the wheel disk portion is greater than the diameter of the gear disk portion,
The diameter of the inner ring portion is greater than the diameter of the wheel disk portion,
The sub-rotating part is a non-pneumatic tire fixed to the front surface of the wheel disk part.
The method of claim 1,
A width of the depression in a circumferential direction from the inner surface of the inner ring portion is greater than a distance between two adjacent depressions.

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