KR20140102501A - Tire and wheel moldings for making this - Google Patents

Abstract

Disclosed is a tire. The tire comprises an outer-skin layer having a U-shape, wherein one side is open and an end part positioned in the opening direction is joined onto a rim; a foamed synthetic resin layer which fills the inside of the outer-skin layer; and a groove arranged in the filled foamed synthetic resin layer adjacent to the end part.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a tire,

The present invention relates to a non-punctured tire which can be used for a long time without fear of puncturing by drastically reducing a puncture, and a wheel frame capable of manufacturing the same.

1 and 2, the conventional motorcycle wheel 10 has a structure in which the distal end of the tire 12 is coupled to the distal end 111 of the rim 11. High pressure air is injected into the interior of the tire 12. The tire 12 is not released from the rim 11 by the expansion force of the air. In addition, the internal air of the tire 12 serves to absorb the impact of the ground.

However, a puncture occurs when the tire 12 is stuck to a pointed object. Therefore, many attempts have been made to develop tires that are not punctured.

Many people inserted a sponge or the like inside the tire to manufacture a tire that does not have a puncture. However, tires that are currently in use have not been developed.

3 is a side view of a conventional wheel for a two-wheeled vehicle. The conventional wheel for a two-wheeled vehicle is composed of a spoke 1300 supporting the rim 1200 and the rim 1200 and a tire 1100 coupled to the rim 1200. Fig. 4 is a cross-sectional view taken along the line A-A 'in Fig. 3, in which the tire 1100 is composed of an outer layer 11100 made of synthetic or natural rubber and a foamed synthetic resin filled in the outer layer 11100. The tire 1100 is engaged with the rim 1200, and at this time, all parts joined to the rim 1200 are made of foamed synthetic resin.

The wheel 1000 for a motorcycle is manufactured by bonding an outer layer 11100 to a rim 1200, filling a resin mixed with a foaming agent in the outer layer 11100, and foaming the resin with heat. Therefore, there was no space between the rim 1200 and the tire 1100, and the structure was difficult to separate. Even if it was separated, it was difficult to insert a new tire 1100 into the rim 1200.

The present invention seeks to provide a wheel frame capable of manufacturing a tire which is not punctured.

The present invention also provides a tire having a structure that can be easily attached to and detached from a rim.

The present invention also provides a tire in which a wire is inserted into a distal end portion of the tire, which is engaged with the rim so that the tire is engaged with the rim and can maintain its shape.

The present invention also provides a tire in which the weight of the foamed synthetic resin layer is doubled, thereby reducing the weight of the tire.

According to an aspect of the present invention,

A ring member 101 having a ring-shaped opening portion formed at one side thereof and having a cross-section "C"

A support member (102) which traverses the inside of the ring member (101) so that the ring member (101) can maintain its shape;

A detachable member (103) forming a complete circle together with the ring member (101) when engaged with the opening of the ring member (101);

A guide module 104 coupled between the detachable member 103 and the support member 102 to move the detachable member 103 to the center of the ring member 101 or to engage with the ring member 101, Is provided.

Also,

The guide module (104)

A guide tube 1041 coupled with the support member 102;

A nut member 1042 having threads formed therein and engaging with the guide tube 1041;

A guide rod 1043 screwed to the nut member 1042 and having a distal end engaged with the detachable member 103;

And a fastening member 1044 fixedly coupled to the guide rod 1043 is provided.

Also,

And a protruding portion (105) formed inside the ring member (101).

 According to another aspect of the present invention,

The first shorting part 205 is formed in the shape of a ring and has a cross section of "C" shape. The first shorting part 205 is disconnected at one point. The second shorting part 205, which is disconnected from the first shorting part 205, 206) are formed;

A center member 202 located at the center of the inside of the ring member 201;

A support module (203) coupled between the center member (202) and the ring member (201);

A shorting pedestal module 204 positioned between the first shorting part 205 and the center member 202 and capable of supporting the lower part of the first shorting part 205 in a circular shape, and;

And a hinge (207) coupled to a lower portion of the second shorting portion (206).

Also,

The short-circuit-side supporting module 204,

A guide pipe 2041 having one end coupled to the center member 202;

A nut member 2042 coupled to the guide tube 2041;

A guide rod 2043 screwed with the nut member 2042;

A tightening member 2045 fixedly coupled to the guide rod 2043;

And a support member 2044 coupled to a distal end of the guide rod 2043 and supporting a lower end of the first shorting unit 205.

Also,

And a protrusion formed inside the ring member 201 is provided.

According to another aspect of the present invention,

A first ring member 301 having a circular cross-sectional shape "b ";

And a second ring member (302) detachably engaged with the first ring member (301) in a symmetrical form with the first ring member (301).

Also,

 A first center member (303) located at the center of the first ring member (301);

A first support member 304 connecting the first ring member 301 and the first center member 303;

A second center member 305 positioned at the center of the second ring member 302;

And a second support member (306) connecting the second ring member (302) and the second center member (305).

According to another aspect of the present invention,

A first protrusion 3011 formed on the first ring member 301 and protruding outward at a portion coupled to the second ring member 302;

And a second protrusion 3021 formed on the second ring member 302 and protruding outward at a portion where the first ring member 301 is engaged with the first ring member 301. [

According to another aspect of the present invention,

An envelope layer having one side opened in a "U" shape and a distal end positioned in an open direction coupled with the rim;

A foamed synthetic resin layer filled in the outer shell layer;

And a groove formed in the foamed synthetic resin layer filled in the vicinity of the distal end portion.

Also,

And a wire is inserted into the distal end portion.

Also,

The wire is made of a metal,

Wherein the wire has a curved shape.

Also,

The foamed synthetic resin layer

An inner foamed synthetic resin layer;

There is provided a tire including an outer foamed synthetic resin layer which surrounds the inner foamed synthetic resin layer and is heavier than a specific gravity of the inner foamed synthetic resin layer.

INDUSTRIAL APPLICABILITY As described above, the present invention provides a wheel mold capable of manufacturing a tire that is not punctured.

Further, the present invention provides a tire having a structure that can be easily attached to and detached from a rim.

Further, the present invention provides a tire in which a wire is inserted into a distal end of the tire, which is engaged with the rim so as to be engaged with the rim and can maintain its shape.

Further, the present invention provides a tire in which the weight of the foamed synthetic resin layer is doubled and the weight is remarkably reduced.

1 is a sectional view of a conventional tire;
2 is a sectional view of a rim of a conventional tire.
3 is a side view of a wheel for a two-wheeled vehicle according to the prior art.
4 is a sectional view taken along the line A-A 'in Fig. 3;
Fig. 5 is a side view of a wheel frame according to a first embodiment of the present invention (a form in which a detachable member is coupled). Fig.
6 is a perspective view of a receiving member according to a first embodiment of the present invention;
Fig. 7 is a side view of the wheel frame according to the first embodiment of the present invention (the detachable member is separated). Fig.
8 is a perspective view of a tightening member of a wheel frame according to the first embodiment of the present invention;
Fig. 9 is a sectional view of a portion A in Fig. 5; Fig.
10 is a side view (combined view) of a wheel frame according to a second embodiment of the present invention.
11 is a perspective view of a receiving member according to a second embodiment of the present invention.
12 is a side view (a separated view) of a wheel frame according to a second embodiment of the present invention;
13 is a right side view of a wheel frame according to a third embodiment of the present invention.
14 is a sectional view of FIG. 13B.
15 is a left side view of a wheel frame according to a third embodiment of the present invention;
FIGS. 16 and 17 are sectional views showing a process of manufacturing a tire. FIG.
18 is a perspective view of a tire manufacturing apparatus according to a fourth embodiment of the present invention.
Fig. 19 is a sectional view of the tire manufacturing apparatus of Fig. 18 in the longitudinal direction (longitudinal direction). Fig.
20 is a cross-sectional view of the tire manufacturing apparatus of Fig. 18 in a unidirectional (short direction).
21 is a sectional view of a tire according to a fifth embodiment of the present invention;
22 is a plan view of a wire according to a fifth embodiment of the present invention;
23 is a sectional view showing a process of joining a tire according to a fifth embodiment of the present invention to a rim.
24 is a sectional view of a tire according to a sixth embodiment of the present invention.
Fig. 25 is a side view of a wheel frame according to a seventh embodiment of the present invention (a form in which a detachable member is coupled). Fig.
26 is a side view of the wheel frame according to the seventh embodiment of the present invention (the detachable member is separated).
27 is a cross-sectional view of part C of Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. , Thereby not limiting the spirit and scope of the present invention.

The tire according to the present invention is completed by attaching a sponge raw material to a wheel frame and foaming it in a tire manufacturing apparatus. First, the structure of a wheel frame will be described, and a tire manufacturing apparatus will be described. Finally, the structure of the tire will be described.

FIG. 5 is a side view of a wheel frame according to a first embodiment of the present invention (a form in which a detachable member is engaged), FIG. 6 is a perspective view of a support member according to the first embodiment of the present invention, Fig. 8 is a perspective view of a tightening member of a wheel frame according to a first embodiment of the present invention, and Fig. 9 is a sectional view of a portion A of Fig. 5 to be.

The wheel frame 100 of the present embodiment includes a ring member 101 having a ring shape and an opening formed on one side thereof and having a "C" shape in cross section; A support member 102 diagonally connecting the inside of the ring member 101 so that the ring member 101 can maintain its shape; A detachable member 103 which forms a complete circle together with the ring member 101 when engaged with the opening of the ring member 101 and a detachable member 103 which is coupled between the detachable member 103 and the support member 102, And a guide module 104 for moving the ring member 103 to the center of the ring member 101 or engaging with the ring member 101 (see Fig. 5)

The wheel frame 100 of this embodiment has the same shape as a rim of a wheel of a bicycle or a motorcycle. After the raw material of the synthetic resin is attached to the wheel mold 100 of the present embodiment, when the foam is foamed, a tire free from puncture is completed.

The ring member 101 is in the form of a circular ring in side view. The cross section of the ring member 101 has a "C" shape (top open shape) as shown in FIG. As shown in Fig. 9, the projecting portion 105 is coupled to the inside of the ring member 101. Fig. When a tire is manufactured using the wheel mold 100 of the present embodiment, a groove corresponding to the shape of the projection 105 is formed on the tire. The grooved tire is easy to remove from the rim.

The ring member 101 is about 4/5 of the circle, and the rest is 1/5 open (open). A plurality of support members 102 may be coupled to maintain the shape of the ring member 101. [ The support member 102 can be extended in four directions with respect to the center of the ring member 101 and can be engaged with the inside of the ring member 101. [

The detachable member 103 engages with the opening of the ring member 101 to form a complete circle. 7 is a side view of the detachable member 103 separated from the ring member 101 and Fig. 5 is a side view of the detachable member 103 coupled with the ring member 101. Fig.

As shown in Fig. 5, when the tire raw material is filled in the "C" shape and foamed in a state where the detachable member 103 and the ring member 101 are engaged, the circular tire 1000 is completed. At this time, the tire 1000 needs to be separated. In the situation shown in FIG. 5, there is no extra space and it is not easy to separate the tire 1000.

7, a space is formed between the tire 1000 and the ring member 101 to separate the removable member 103 from the ring member 101. In this case,

As shown in Fig. 5, the detachable member 103 and the support member 102 are connected to the guide module 104. Fig. The guide module 104 includes a guide pipe 1041 coupled to the support member 102 and a nut member 1042 having threads formed therein and engaged with the guide pipe 1041, A guide rod 1043 threadedly engaged with the detachable member 103 and engaged with the detachable member 103 at an end thereof; And a tightening member 1044 fixedly coupled to the guide rods 1043. A coupling hole 10441 is formed in the tightening member 1044. The tightening member 1044 can be fixedly coupled to the guide rod 1043. [ When the tightening member 1044 is turned, the guide rod 1043 rotates together. When the guide rod 1043 is turned clockwise, the detachable member 103 is engaged with the ring member 101 as shown in Fig. On the other hand, when the guide rod 1043 is turned counterclockwise, the detachable member 103 is separated from the ring member 101 as shown in Fig. The guide rod 1043 is engaged with a hole (not shown) formed in the detachable member 103 so that the detachable member 103 does not rotate together when the guide rod 1043 rotates. In addition, the detachable member 103 is structurally designed to prevent the detachable member 103 from flowing down in the longitudinal direction of the guide rod 1043.

On the other hand, when the detachable member 103 is engaged with the ring member 101, the retaining member 106 is coupled to both ends of the detachable member 103 to maintain its shape. As shown in Fig. 6, the support member 106 is an open structure having a " C "shape in cross section, and is fixedly coupled to both ends of the detachable member 103. [ Thereafter, when the detachable member 103 is engaged with the ring member 101 as shown in Fig. 5, the retaining member 103 maintains a stable circular shape.

Fig. 10 is a side view (combined view) of a wheel frame according to a second embodiment of the present invention, Fig. 11 is a perspective view of a support member according to a second embodiment of the present invention, Fig. (Side view) of the wheel frame according to the example.

The wheel mold 200 of the present embodiment has a ring shape and has a cross section of "C" shape and has a first shorting part 205 disconnected at one point. The first shorting part 205 is spaced apart from the first shorting part 205 A ring member 201 having a second short-circuited portion 206 disconnected at a point; A center member 202 positioned at the center of the inside of the ring member 201; a support module 203 coupled between the center member 202 and the ring member 201; A shorting pedestal module 204 positioned between the first shorting portion 205 and the center member 202 and capable of supporting the lower portion of the first shorting portion 205 in a circular shape; And a hinge 207 coupled to a lower portion of the second shorting portion 206. The support module 203 may be composed of a support rod 2032 and a support rod guide tube 2031.

The wheel frame 200 of this embodiment uses a ring member 201 of a stretchable material (for example, a resilient metal). The cross section of the ring member 201 is the same as in Fig. A center member 202 is located at the center of the ring-shaped ring member 201.

The support module 203 is coupled between the center member 202 and the ring member 201. The support module 203 may be composed of a support rod 2032 and a support rod guide tube 2031. A spring (not shown) is further interposed in the inside of the support rod guide tube 2031 so that the support rod 2031 can be pushed out. A plurality of support modules 203 can be coupled between the center member 202 and the ring member 201. The support module 203 may consist of one rod.

The ring member 201 is broken at the first shorting portion 205 and the second shorting portion 206. When the first shorting unit 205 and the second shorting unit 206 are connected to each other, a circular ring member 201 is formed as shown in FIG. When the connection of the first short-circuit part 205 is cut off, the hinge 207 of the second short-circuit part 206 rotates to form the shape as shown in FIG. 12, a space is formed and the tire 2000 coupled to the ring member 201 can be easily separated.

The shorting pedestal module 204 is positioned between the first shorting portion 205 of the ring member 201 and the center member 202 as shown in FIG.

The short-circuit support module 204 includes a guide tube 2041 having one end coupled to the center member 202; A nut member 2042 coupled to the guide tube 2041; A guide rod 2043 screwed to the nut member 2042; A tightening member 2045 fixedly coupled to the guide rod 2043; And a supporting member 2044 which is coupled to the distal end of the guide rod 2043 and supports the lower end of the first shorting part 205.

When the tightening member 2045 is turned clockwise, the guide rod 2043 comes out of the guide tube 2041 as shown in Fig. When the tightening member 2045 is turned counterclockwise, the guide rod 2043 enters the guide tube 2041 as shown in Fig. The guide bar 2043 is rotatably coupled to a hole (not shown) formed in the receiving member 2044.

As shown in Fig. 10, when the receiving member 2044 supports the lower end of the first shorting portion 205, the ring member 201 becomes completely circular. On the other hand, when the support member 2044 moves in the direction of the center member 202, the shape of the support member 2044 becomes as shown in FIG. 12, and the tire 200 can be separated from the wheel mold 2001. 11 is a perspective view of the receiving member 2044. Fig.

FIG. 13 is a right side view of a wheel frame according to a third embodiment of the present invention, FIG. 14 is a sectional view of FIG. 13, and FIG. 15 is a left side view of a wheel frame according to a third embodiment of the present invention.

In the wheel assembly 300 of the present embodiment, the first ring member 301 and the second ring member 302 are combined to complete a ring member of a complete circular shape. The cross section of the first ring member 301 has an "a" shape, and the second ring member 302 has a mirror image (symmetrical structure) with the first ring member 301. When the first ring member 301 and the second ring member 302 are coupled, a "C" shape is formed as shown in FIG. The first ring member 301 has a circular shape as shown in Fig. 13 when viewed from the right side. Also, the second ring member 302 also has a round shape as shown in Fig. 15 as viewed from the left side.

The ring member 300 constituted by the first ring member 301 and the second ring member 302 has a shape similar to the rim of the motorcycle wheel. When the first ring member 301 and the second ring member 302 are coupled, a "C" shape is maintained as shown in Fig. At this time, a protrusion is formed in the inside of the "C" The protrusion is composed of a first protrusion 3011 coupled to the first ring member 301 and a second protrusion 3021 coupled to the second ring member 302. [ The first ring member 301 and the second ring member 302 can be detached and attached by a detachable structure (for example, a clamp).

13, the first support member 304 is engaged with the inside of the first ring member 301 to maintain the shape of the first ring member 301. As shown in Fig. The first support member 304 can be engaged with the first ring member 301 by placing the first center member 303 at the center of the first ring member 301. [ 15, the second support member 306 is coupled to the second ring member 302. [ The second center member 305 can be disposed at the center of the second ring member 302 and the second support member 306 can engage with the second ring member 302. [

The first protrusion 3011 is formed in the first ring member 301. The first protrusion 3011 protrudes toward the outside (upper direction in Fig. 14) at a portion where the first protrusion 3011 is engaged with the second ring member 302. [ And the second projection 3021 is formed in the second ring member 302. [ The second projection 3021 protrudes toward the outside (upper direction in Fig. 14) at a portion where the second projection 3021 is engaged with the first ring member 301.

The wheel casings according to the first to third embodiments are configured such that the tires can be easily separated from the wheel casings after the tires are manufactured. Describe how the tires are made in the "c" groove of the wheel frame in the above embodiment. The tire of this embodiment is a non-punctured tire, which is made by a process of foaming a soft sponge inside a hard shell.

16 to 17 are cross-sectional views illustrating a manufacturing process of a tire according to a fourth embodiment of the present invention.

16, the synthetic resin layer 23 is inserted into the "? &Quot; groove of the ring member 21, and the envelope 22 on which the tread is formed is covered. Two or more types of foaming agents are mixed in the interior of the synthetic resin layer 23. [ Such a foaming agent is used for preparing a sponge, and a detailed description thereof will be omitted.

Thereafter, when the ring member 21 is put in the tire manufacturing apparatus 40 shown in Fig. 18 and heat is applied, the foaming agent is foamed and the synthetic resin layer 23 expands. As a result, as shown in Fig. 17, the synthetic resin layer 23 foamed inside the outer shell 22 is filled. Pores 231 and 232 of various sizes are formed in the synthetic resin layer 23.

The method of varying the sizes of the first pores 231 and the second pores 232 is performed by using a different type of foaming agent. That is, it is possible to use a foaming agent having a different foaming amount at a specific temperature when foaming the synthetic resin layer 23.

As shown in Fig. 16, before the synthetic resin layer 23 is foamed, two or more kinds of foaming agents are mixed in the synthetic resin layer 23. Fig. Such a foaming agent is used for preparing a sponge, and a detailed description thereof will be omitted.

As shown in Fig. 17, the synthetic resin layer 23 is filled in the outer shell 22, so that even if a hole is formed in the tire 3000, there is no defect in the function of the tire 3000. [

As the material of the synthetic resin layer 23, a sponge made of various types of synthetic resin such as expanded polyurethane and styrene butadiene (SBR) can be used.

A steel wire 221 was inserted into the distal end of the outer sheath 22 to increase the stretchability of the distal end of the outer sheath 22.

On the other hand, when the projecting portion 211 is coupled to the inside of the "C" groove of the ring member 21, a groove corresponding to the shape is formed in the tire 3000. When the groove is formed in the tire 3000 in this way, not only the separation from the ring member 21 is easy, but also the stretching force is easy to insert into the rim.

Hereinafter, the tire manufacturing apparatus will be described.

18 is a perspective view of a tire manufacturing apparatus according to a fourth embodiment of the present invention, FIG. 19 is a sectional view in the longitudinal direction (longitudinal direction) of the tire manufacturing apparatus of FIG. 18, (Short direction).

The tire manufacturing apparatus 40 includes: a body portion 41 having an internal space; A heat supply module 42 for supplying heat to the body 41; A cradle (43) disposed across the internal space of the body part (41) in the longitudinal direction; And a rotation module 44 for rotating the cradle 43.

The body portion 41 is in the form of a tube, and an internal space is formed. The wheel frame 200 is coupled to the inside of the body portion 41. A synthetic resin containing a foaming agent is attached to the wheel frame 300, and when heated, the foaming agent expands to produce a tire.

A heat supply module 42 for supplying heat is coupled to the body portion 41. The heat supply module 42 includes a pipe 422 coupled to the body portion 41 and a boiler 421 for supplying high temperature oil to the inside of the pipe 422. The boiler 421 generates heat to supply oil of about 120 degrees Celsius to the pipe 422. The heat supply module 42 of the present embodiment is composed of a boiler 421 and a pipe 422, but the heat supply module 42 may be an electric heater. The heat transfer device may be a heat source and a power source for supplying electric current to the heat source.

The holder 43 is coupled to the inside of the body 41 in the longitudinal direction. The cradle (200) can be mounted on the cradle (43). The holder 43 may be in the form of a pair of rods. By fitting the cradle 43 in the center of the cradle 200, when the cradle 43 rotates, the cradle 200 also rotates together.

* The tire is made into a finished product by using the tire manufacturing apparatus 40 of this embodiment. At this time, the most important thing is whether the synthetic resin layer expands so that the outer shape of the tire is kept circular. In order for the tire to expand into a circular shape, heat must be uniformly and uniformly transferred to the entire area of the synthetic resin layer. If a lot of heat is supplied to only one side, a distorted tire is completed.

The tire manufacturing apparatus 40 of the present embodiment is a system capable of uniformly transferring heat to the wheel mold 200 using the rotation module 44 and the fan 45.

The rotation module 44 includes a motor 441 and a power transmitting member 442 for connecting the motor 441 and the mount stand 442. The power transmitting member 442 may be a belt or a chain. The motor 441 is coupled to the speed reducer so that it can rotate at a low speed. The rotational force of the motor 441 is transmitted to the power transmitting member 442 and the holder 43 coupled with the power transmitting member 442 rotates slowly.

As the cradle 43 rotates, the cradle 200 mounted on the cradle 43 also rotates. A pipe 422 for circulating high-temperature oil is built in the inside of the body portion 41. Even if the temperature is different according to the position of the pipe 422, as the cradle 43 rotates, the cradle 200 receives heat evenly.

Meanwhile, the fan 45 is coupled to the inside of the body 41. The fan 45 forcibly circulates the air inside the body portion 41 to maintain the internal temperature of the body portion 41 uniform.

The cover 411 is coupled to the front and back of the body 41 so that the wheel mold 200 can be mounted on the cradle 43 or removed.

In the body 41, a pressure measuring device and a temperature measuring device are combined. The pressure measuring device prevents the internal pressure of the body portion 41 from increasing excessively. The temperature measuring device measures the temperature inside the body portion 41. [

The structure and the shape of the wheel frame 200 have been described in the first to third embodiments, and a detailed description thereof will be omitted.

FIG. 21 is a cross-sectional view of a tire according to a fifth embodiment of the present invention, FIG. 22 is a plan view of a wire according to a fifth embodiment of the present invention, and FIG. 23 is a plan view of a tire according to the fifth embodiment of the present invention, FIG.

The tire 2100 of the present embodiment comprises: an outer skin layer 21100 having one end opened in a "U" shape and a distal end 211400 positioned in the open direction, And a groove 21300 is formed by removing a part of the foamed synthetic resin layer 21200 filled in the position adjacent to the distal end 211400. The foamed synthetic resin layer 21200 is filled in the outer shell layer 21100.

The tire 2100 of this embodiment is easily engageable with the rim 2200 and is also separable. In addition, the tire 2100 of this embodiment maintains its shape by the wire 21400 when engaged with the rim 2200. Fig.

The outer skin layer 21100 is made of rubber and can be made of natural rubber or synthetic resin. The shape is "U", one side is open. The distal end 211400 in the open orientation is engaged with the rim 2200. A protruding tread 21600 is formed outside the outer skin layer 21100. The tread 21600 increases the frictional force with the ground.

The inside of the outer skin layer 21100 is filled with a foamed synthetic resin layer 21200. The foamed synthetic resin layer 21200 is completed by placing a foaming agent in a synthetic resin and heating it.

A groove 21300 is formed in the foamed synthetic resin layer 21200 filled in the position adjacent to the distal end 211400 of the shell layer 21100 while forming the foamed synthetic resin layer 21200. [ The groove 21300 is formed by inserting a structure corresponding to the groove 21300 in the corresponding region when the foamed synthetic resin layer 21200 is manufactured by a foaming process and the foamed synthetic resin layer 21200 is not filled in the structural region . Further, the foamed synthetic resin layer 21200 already foamed may be removed to form the groove 21300.

On the other hand, a wire 21400 is inserted into the distal end portion 211400 of the outer skin layer 21100. The wire 21400 may be made of steel. Wire 21400 can be inserted in multiple layers. The wire 2100 is fixed to the rim 2200 and is not released because the wire 21400 inserted in the distal end portion 211400 catches a circular shape.

The wire 21400 may have a straight shape as shown in Fig. 22 (a) or a bent shape as shown in Fig. 22 (b). The curved wire 21400 increases the stretching force of the distal end 211400 so that the user can more easily couple the tire 2100 to the rim 2200. [

The straight wire as shown in FIG. 22 (a) can be coupled with the distal end 211400 to the rim 2200 by a strong force using a tool. However, the curved wire 21400 as shown in Figure 22 (b) can couple the distal end 211400 to the rim 2200 with less force.

23 is a sectional view showing a process of coupling the tire 2100 of this embodiment to the rim 2200. Fig.

As shown in FIG. 23C, one end of the tire 2100 is inserted into the rim 2200. Thereafter, as in (d), the other end is inserted. At this time, a groove 21300 is formed in the tire 2100 to provide a clearance where the other end (later inserted end) can be wrinkled (deformed) and inserted. By this groove 21300, the other end portion is coupled to the rim 2200 while easily deforming the shape as shown in (d). Thereafter, when the tire 2100 is seated, the distal end portion is brought into close contact with the inner wall of the rim 22 as shown in (e) of Fig.

In particular, the tire 2100 of the present embodiment can be coupled to rims of various widths due to the grooves 21300. Even if the tire 2100 of this embodiment is fitted to the narrow-shaped rim, the space of the groove 21300 dampens the space. That is, due to the grooves 21300, the distal portion 211400 of the outer skin layer 21100 secures considerable stretchability and can be joined to various width rims.

24 is a sectional view of a tire according to a sixth embodiment of the present invention.

The tire 3100 according to the present invention includes: an outer layer 31100 having one end opened in a "U" shape and a distal end 311400 positioned in an open direction; A foamed synthetic resin layer 31200 filled in the outer shell layer 31100; And a groove 31300 formed in the foamed synthetic resin layer 31200 located at the distal end 311400. [

The tire 3100 of this embodiment has substantially the same structure as the tire 2100 of Fig. The difference is the foamed synthetic resin layer 31200 of a multi-layer structure. Therefore, the structure of the foamed synthetic resin layer 31200 will be described in detail.

The foamed synthetic resin layer 31200 includes an inner foamed synthetic resin layer 312100; And an outer foamed synthetic resin layer 312200 which surrounds the inner foamed synthetic resin layer 312100 and is heavier than the specific gravity of the inner foamed synthetic resin layer 312100.

Generally, the outer foamed synthetic resin layer 312200 having a high specific gravity has good elasticity. Foamed polyurethane, styrene butadiene (SBR). The inner foamed synthetic resin layer 312100 uses a light material. Examples thereof include polystyrene-polyolefin composite foamed resin, expanded polystyrene, and the like.

As described above, the foamed synthetic resin layer 31200 having a multiple structure can sufficiently secure the elastic force of the tire 3100 while reducing the weight. That is, the inner foamed synthetic resin layer 312100 serves only to fill the space and does not contribute to the stretching force of the tire 3100. Therefore, the inner foamed synthetic resin layer 312100 should be as light as possible. On the other hand, the outer synthetic resin layer 312200 contributes greatly to the elasticity and elasticity of the tire 3100. Therefore, the outer synthetic resin layer 312200 is preferably made of a material having good elasticity even if it is somewhat heavy.

Fig. 25 is a side view of a wheel frame according to a seventh embodiment of the present invention (a form in which a detachable member is engaged), Fig. 26 is a side view of the wheel frame according to the seventh embodiment of the present invention And Fig. 27 is a sectional view of part C of Fig.

The wheel mold 500 of the present embodiment includes a ring member 501 having a ring shape and having an opening formed on one side thereof and having a cross section of "C" shape; A detachable member (502) forming a complete circle together with the ring member (501) when engaged with the opening of the ring member (501); A fixing member 503 and 504 for fixing the detachable member 502 and the ring member when the detachable member 502 is engaged with the opening of the ring member 501; And includes a protrusion 505.

As shown in Fig. 25, the tire 5000 is manufactured in a state of being coupled with the ring member 501 and the detachable member 502. Fig. In order to separate the tire from the ring member 501, the detachable member 502 is first separated to secure a space, and then the tire 5000 is detached. When the detachable member 502 and the ring member 501 are engaged, they are shaped like one rim. The difference is that a protrusion 505 is formed in the inside of the ring member 501 having a "C" shape. When the tire 5000 is finally manufactured, a groove is formed inside the tire 5000 at a position corresponding to the protruding portion 505.

The fixing members (503, 504) allow the detachable member (502) to be fixed to the ring member (501). The fixing members 503 and 504 may be clamps. It may also be in the form of a pressure screw. Further, one of the fixing members 503 and 504 may be a hinge member. The fixing members 503 and 504 can selectively use known fixing means so that the detachable member 502 is not separated from the ring member 501 during manufacturing of the tire 5000.

The protrusion 505 may also be formed inside the detachable member 502.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Modifications and additions by those skilled in the art to an equivalent range based on the embodiments will also fall within the scope of the present invention.

12

Claims (14)

A ring member 101 having a ring-shaped opening portion formed at one side thereof and having a cross-section "C"
A support member (102) which traverses the inside of the ring member (101) so that the ring member (101) can maintain its shape;
A detachable member (103) forming a complete circle together with the ring member (101) when engaged with the opening of the ring member (101);
A guide module 104 coupled between the detachable member 103 and the support member 102 to move the detachable member 103 to the center of the ring member 101 or to engage with the ring member 101, A wheel frame comprising. The method according to claim 1,
The guide module (104)
A guide tube 1041 coupled with the support member 102;
A nut member 1042 having threads formed therein and engaging with the guide tube 1041;
A guide rod 1043 screwed to the nut member 1042 and having a distal end engaged with the detachable member 103;
And a tightening member (1044) fixedly coupled to the guide rod (1043).
3. The method of claim 2,
And a protrusion (105) formed inside the ring member (101).
The first shorting part 205 is formed in the shape of a ring and has a cross section of "C" shape. The first shorting part 205 is disconnected at one point. The second shorting part 205, which is disconnected from the first shorting part 205, 206) are formed;
A center member 202 located at the center of the inside of the ring member 201;
A support module (203) coupled between the center member (202) and the ring member (201);
A shorting pedestal module 204 positioned between the first shorting part 205 and the center member 202 and capable of supporting the lower part of the first shorting part 205 in a circular shape, and;
And a hinge (207) coupled to a lower portion of the second shorting portion (206).
5. The method of claim 4,
The short-circuit-side supporting module 204,
A guide pipe 2041 having one end coupled to the center member 202;
A nut member 2042 coupled to the guide tube 2041;
A guide rod 2043 screwed with the nut member 2042;
A tightening member 2045 fixedly coupled to the guide rod 2043;
And a support member (2044) coupled to an end of the guide rod (2043) and supporting a lower end of the first shorting part (205).
6. The method of claim 5,
And a protrusion formed inside the ring member (201).
A first ring member 301 having a circular cross-sectional shape "b ";
And a second ring member (302) symmetrically formed with the first ring member (301) and detachably engaged with the first ring member (301).
8. The method of claim 7,
A first center member (303) located at the center of the first ring member (301);
A first support member 304 connecting the first ring member 301 and the first center member 303;
A second center member 305 positioned at the center of the second ring member 302;
And a second support member (306) connecting the second ring member (302) and the second central member (305).

8. The method of claim 7,
A first protrusion 3011 formed on the first ring member 301 and protruding outward at a portion coupled to the second ring member 302;
Further comprising a second protrusion (3021) formed on the second ring member (302) and protruding outward at a portion to be coupled with the first ring member (301). An envelope layer having one side opened in a "U" shape and a distal end positioned in an open direction coupled with the rim;
A foamed synthetic resin layer filled in the outer shell layer;
And a groove formed in the foamed synthetic resin layer filled adjacent to the distal end.
11. The method of claim 10,
And a wire is inserted into the distal end portion. 12. The method of claim 11,
The wire is made of a metal,
Wherein the wire has a curved shape.
13. The method of claim 12,
The foamed synthetic resin layer
An inner foamed synthetic resin layer;
And an outer foamed synthetic resin layer surrounding the inner foamed synthetic resin layer and heavier than a specific gravity of the inner foamed synthetic resin layer.

A ring member 501 having a ring-shaped opening portion formed at one side thereof and having a cross-section "C"
A detachable member (502) forming a complete circle together with the ring member (501) when engaged with the opening of the ring member (501);
Fixing members (503, 504) for fixing the detachable member (502) and the ring member (501) when the detachable member (502) is engaged with the opening of the ring member (501);
And a protrusion (505) formed inside the ring member (101).

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