KR101721398B1 - Foam tire - Google Patents

Foam tire Download PDF

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Publication number
KR101721398B1
KR101721398B1 KR1020150122482A KR20150122482A KR101721398B1 KR 101721398 B1 KR101721398 B1 KR 101721398B1 KR 1020150122482 A KR1020150122482 A KR 1020150122482A KR 20150122482 A KR20150122482 A KR 20150122482A KR 101721398 B1 KR101721398 B1 KR 101721398B1
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KR
South Korea
Prior art keywords
tire
foam
foam tire
rim
sheet
Prior art date
Application number
KR1020150122482A
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Korean (ko)
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KR20170025686A (en
Inventor
이성율
Original Assignee
화인케미칼 주식회사
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Priority to KR1020150122482A priority Critical patent/KR101721398B1/en
Publication of KR20170025686A publication Critical patent/KR20170025686A/en
Application granted granted Critical
Publication of KR101721398B1 publication Critical patent/KR101721398B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C7/00—Non-inflatable or solid tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/02—Rims characterised by transverse section
    • B60B21/025—Rims characterised by transverse section the transverse section being hollow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C7/00—Non-inflatable or solid tyres
    • B60C7/10—Non-inflatable or solid tyres characterised by means for increasing resiliency
    • B60C7/102—Tyres built-up with separate rubber parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C7/00—Non-inflatable or solid tyres
    • B60C7/10—Non-inflatable or solid tyres characterised by means for increasing resiliency
    • B60C7/105—Non-inflatable or solid tyres characterised by means for increasing resiliency using foam material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C7/00—Non-inflatable or solid tyres
    • B60C7/24—Non-inflatable or solid tyres characterised by means for securing tyres on rim or wheel body

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

The foam tire of the present invention comprises a crosslinked foamed tire body, a rigid sheet joined to the inner circumference of the foam tire body, and a protrusion formed on the surface of the rigid sheet joined to the inner circumference of the foam tire body.

Description

Foam tire {Foam tire}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foam tire, and more particularly, to a foam tire in which a foam cell is formed inside to secure the elasticity of a wheel for smooth transportation of a transfer material without injecting air from the outside.

Wheels are the greatest invention of mankind that can reduce the friction between the moving means and the ground, thereby reducing the force required to move. The wheels are widely used in automobiles, bicycles, carts and the like. Currently used wheels are widely used because of the air pressure inside them and the elasticity due to the air pressure.

Fig. 1 shows the structure of a general bicycle wheel. Referring to FIG. 1, a bicycle wheel 100 includes a tire 101, a rim 102, a spoke 103, and a hub 104. It is general that the tire 101 is a portion in contact with the ground, and air is injected to have elasticity. The rim 102 is a ring-shaped structure having a certain rigidity as means for fixing the tire. The hub 104 is a structure constituting an axis through which the rotation of the wheel is made, and may include a bearing or the like to reduce friction due to rotation. The spokes 103 radially connect the hub 104 and the rim 102 and serve to prevent the rim from being deformed when subjected to a force in the center direction.

Bicycle tires are mainly classified as clincher tires and tubular tires. The clincher tires have a structure in which one side is open and a bead is inserted in the circumferential direction at the open end. The clincher tire has a structure in which a tube is inserted into the clincher tire to receive the air pressure and the bead is caught by the protrusion of the cleansing rim and does not fall out from the rim. Tubular tires are not structured such that one side is opened differently from the clincher tires, but are fixed to the tubular rim with an adhesive or the like in a state in which a tube is inserted and bulged.

Recently, a foam tire has been developed. The foam tire does not need to inject air separately from the outside, and has elasticity against the ground by a pore formed therein. Foam tires have the advantage of not puncturing even when they come into contact with sharp structures on the ground.

Prior art relating to foam tire is Korean Patent No. 943331, which is registered by the inventor of this patent application. The prior art is a bicycle tire manufactured by an injection foaming method, in which a plurality of engagement holes are formed at predetermined intervals in a rim coupling portion, a stopper made of a synthetic resin material is fixed to the engagement hole, And the stopper has a horizontal surface on an arc surface such that both end surfaces protrude when the stopper is fixedly coupled to the coupling hole, and both end surfaces are inclined. Foam tires of this structure can be fixed to the cleaner rim, but they are not applicable to the tubular rim which can not be provided with a stopper.

Therefore, it is very necessary to develop a foam tire which can be stably fixed to a tubular type rim.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a foam tire in which the shape of a foam tire is deformed to prevent a tire from being separated from the rim.

A second problem to be solved by the present invention is to provide a foam tire having a structure that does not separate from the tubular rim even when an external force is applied.

In order to accomplish the first object of the present invention, there is provided a method for manufacturing a foam tire, comprising the steps of: crosslinking a foamed tire body; a rigid sheet joined to an inner circumference of the foam tire body; A foam tire comprising a projection is provided.

According to an embodiment of the present invention, the protrusion may be inserted into the foam tire body to a predetermined depth.

According to another embodiment of the present invention, a hole into which the projection is inserted may be formed in the foam tire body.

According to another embodiment of the present invention, the hard sheet may include a polymer resin sheet or a metal sheet.

In order to achieve the second object of the present invention, there is provided a foam tire fixedly mounted on a concave tire seating portion of a tubular rim, the convex inner circumferential surface corresponding to a concave tire seating portion of the tubular rim, A ring shaped foam tire body resiliently longitudinally coupled to the tubular rim so as to be able to engage with the tubular rim while being coupled to the tubular rim, And a rigid sheet in contact with the concave tire seating portion of the tubular rim, wherein protrusions are formed on the surface of the rigid sheet to insert the protrusions into the foam tire body so that the rigid sheet and the foam tire body are firmly engaged And the hard sheet has a hardness of not less than Shore D 50, And the rigid sheet is joined to the inner circumferential surface of the inner circumference of the foam tire body in plurality so as to form a ring shape foam tire And has elasticity in the longitudinal direction so as to be fastened to the tubular rim.

According to an embodiment of the present invention, the protrusion may be in the form of a cylinder, a cone, a truncated cone, or an arrowhead.

According to another embodiment of the present invention, the protrusion may have a width larger than that of the lower portion.

According to another embodiment of the present invention, the projection may extend in the direction of the width of the hard sheet.

The foam tire of the present invention has the following effects.

1. Since the rigid sheet is bonded to the resilient foam tire body, the flexural deformation of the foam tire against the ring shape is effectively prevented.

2. The rigid sheet of the foam tire is held in contact with the tire seating portion of the tubular rim and the rigid seat is relatively weak in elasticity as compared with the foam tire so that even when force is applied from outside the foam tire, So that it can be prevented from being detached from the rim.

3. Since the rigid sheet joined to the foam tire body is joined to the structure in which the intermediate middle is separated rather than the continuous ring shape, the foam tire has elasticity in the circumferential direction, so that the tie- .

4. Since the soft material is coated on the outer surface of the rigid sheet, it is possible to prevent noise from being caused by friction with the surface of the rim, and ride comfort can be improved by elasticity of the soft material.

5. Since the projections are formed in the rigid sheet and the projections are inserted into the inside of the foam tire, the rigid sheet and the foam tire body can be more firmly joined together.

6. The projections formed on the rigid sheet extend in the direction of the width of the rigid sheet to increase resistance to elastic deformation of the rigid sheet, and even when subjected to a force on the side of the foam tire, Thereby effectively preventing a deviation from the block.

Fig. 1 shows the structure of a general bicycle wheel.
Figure 2 shows the structure of the cleaner rim and the tubular rim.
3 is a view for explaining a manner in which a foam tire is joined to a clean rim.
4 is a view for explaining a process of separating the foam tire from the tubular rim.
5 is a view illustrating a structure in which a foam tire according to an embodiment of the present invention is coupled to a tubular rim.
6 is a view for explaining the reason why the foam tire according to the embodiment of the present invention is firmly fixed to the tubular rim.
7 illustrates a foam tire in which a plurality of hard sheets are combined according to an embodiment of the present invention.
8 illustrates a structure of a hard sheet formed of a hard sheet having a coating layer and a laminate according to an embodiment of the present invention.
9 illustrates a structure in which a protrusion is formed on a hard sheet according to an embodiment of the present invention.
Fig. 10 shows examples of the protrusions formed on the tire contact surface of the hard sheet.
Fig. 11 shows various forms of the protrusions formed on the tire contact surface of the hard sheet.

The foam tire of the present invention includes a crosslinked foamed tire body and a rigid sheet bonded to the inner periphery of the foam tire body.

The rim of the bicycle wheel is divided into a clean rim and a tubular rim. Although the present invention has been described with reference to bicycle wheels in the present specification, the present invention is not limited to bicycle wheels, and the foam tire of the present invention can be applied to various moving means such as automobiles, carts and the like.

Fig. 2 shows a cross-sectional structure of a cleaner rim and a tubular rim.

Referring to FIG. 2 (a), the clean rig 200 includes a rim body 201, a tire insertion space 202, and a fixing protrusion 203. The rim body 201 generally functions to support the structure of the rim and has a hollow structure in order to reduce the weight. When a tire is inserted into the tire insertion space 202 and air is injected into the tube, the tire is expanded and the bead of the clincher tire is fixed by the fixing protrusion 203 and is engaged with the rim.

2 (b), the rim body 301 of the tubular rim 300 is formed with a concave tire seating portion 302 at an upper portion thereof. When air is injected into the tube inside the tubular tire 300, The inner surface of the inner circumference of the tire is fixed to the tire seating portion 302 between the seat bottom edges 303. The tiebars of the tubular rims are coated with a tackifier to fix the tires, and the tackifiers can be bonded and detached so that the tires can be replaced.

3 is a view for explaining a manner in which a foam tire is joined to a clean rim. Referring to FIG. 3, a foam tire 400 configured to be coupled to the cleanroom includes a tire body 402 and a rim insert 401. The tire body 402 is a portion where the foam tire comes into contact with the ground, and the rim insertion portion 401 is a portion to be inserted into the tire insertion space 202 of the cleaned rim. It is preferable that the rim insert portion 401 has a larger volume than the tire insert space 202. The elastically deformed rim insert portion 401 has elasticity in the tire insert space 202 to apply pressure to the inner surface of the tire insert space So that the foam tire can be stably fixed to the cleaner. If necessary, the stopper as disclosed in Korean Patent No. 943331 may be used to secure the connection between the foam tire and the cleaner rim.

In the case of a cleaner rim, there are various means of fixing the foam tire, but in the case of tubular rims, there is no tire insertion space for fixing the foam tire, so it is easy to firmly engage the foam tire with the tubular rim I do not.

4 is a view for explaining a process of separating the foam tire from the tubular rim. 4, the foam tire 500 is coupled to the tubular rim 300. Since the foam tire 500 having a circular cross-section has elasticity, it is inserted into the tubular rim 300 while the circumference thereof is stretched. And after the joining, the joining of the tubular rims with the elasticity is performed while the foam tire is seated on the concave tire seating portion of the tubular rim. The wheels may come into contact with the obstacle while the bicycle is traveling and may receive a force in a specific direction. This force can be parallel or perpendicular to the direction of rotation of the wheel, which, when subjected to a force in the vertical direction, can leave the tire seating portion off the edge of the seat of the tubular rim. The elastic deformation of the foam tire in the course of the separation of the foam tire from the tire seating portion is caused by the deformation of the ring shape in the width direction of the foam tire and the deformation (shape deformation of the section) of the foam tire portion in close contact with the tire seating portion do. Therefore, it is possible to effectively prevent the foam tire from deviating from the tubular rim by preventing the ring-shaped bending deformation of the foam tire or the deformation of the close contact portion with the tire seating portion.

The present invention forms a deformation preventing portion on the foam fire so that the foam tire can be prevented from being detached from the tubular rim.

5 is a view illustrating a structure in which a foam tire according to an embodiment of the present invention is coupled to a tubular rim. Referring to FIG. 5, a foam tire 600 according to an embodiment of the present invention includes a foam tire body 601 and a deformation preventing portion 602. The foam tire body 601 is a portion in which gas-filled cells are distributed in the inside and is in contact with the ground. The deformation preventing portion 602 is bonded to the inner surface of the ring shape of the foam tire body by an adhesive. The deformation preventing portion 602 is harder than the material of the foam tire, and may be made of a metal, a polymer resin, or the like. The deformation preventing portion 602 is fixed to the tire seating portion 302 of the tubular rim with an adhesive or the like. The foam tire is fixed with a certain pressure applied to the concave tire seating portion 302 of the tubular rim while being elastic and the pressure sensitive adhesive is more firmly coupled between the deformation preventing portion 602 and the tire seating portion 302 .

6 is a view for explaining the reason why the foam tire according to the embodiment of the present invention is firmly fixed to the tubular rim. 6, a force may be applied laterally to the foam tire body 601 due to an obstacle on the ground or the like during traveling of the bicycle. The deformation preventing portion 602 has hard physical properties as compared with the foam tire body 601 So that the shape can be maintained even while the foam tire body 601 is elastically deformed by an external force. The deformation preventing portion 602 is firmly coupled to the foam tire body 601 so that the foam tire does not come off the tubular rim as long as the deformation preventing portion 602 is fixed to the tire seating portion 302. [ This is because the deformation preventing portion 602 has a higher rigidity than the foam tire. In the case of a foam tire having a structure in which the deformation preventing portion 602 is not engaged, the foam tire is pulled from the tubular rim It can be easily separated.

7 illustrates a foam tire in which a plurality of hard sheets are combined according to an embodiment of the present invention. Referring to FIG. 7, a plurality of deformation preventing portions 602 are coupled to the inner surface of the ring of the foam tire body 601. The respective deformation preventing portions 602 can be coupled to the foam tire body 601 adjacent to each other or spaced apart from each other by a predetermined distance. The reason why the deformation preventing portions are divided into a plurality of portions is that the foam tire is elastic . Since the tire seating portion of the tubular rim has a concave structure that decreases in height from the edge to the center, the ring-shaped foam tire must be elastic in the longitudinal direction of the circumference so that it can be joined to the tubular rim. The extension portion 603 is an area where the deformation preventing portion is not coupled to the foam tire. The extension portion can be extended in the longitudinal direction due to the elasticity of the foam tire body because the hard deformation preventing portion is not coupled. When the number of deformation preventing portions 602 is N, the arc length of each deformation preventing portion can have a length of about 1 / N of the inner circumference of the foam tire body 601 approximately. It is preferable that the number of the deformation preventing portions is 3 to 100. If the number of the deformation preventing portions is less than 3, it is difficult to have the elasticity necessary for the joining of the foam tire. If the number of the deformation preventing portions exceeds 100, the foam tire can be bent sideways and can be separated from the tubular rim when receiving external force.

The foam tire body may be made of an elastic material capable of forming a gas cell therein, may be produced by crosslinking foam, and may be made of a mixture or composite of an ethylene copolymer and a synthetic rubber. The deformation preventing portion applied to the foam tire of the present invention may include a hard sheet, and the material thereof may be a polymer resin sheet, a metal sheet, or a composite material or a laminate thereof. The hardness of the hard sheet made of the polymer resin sheet is preferably in the range of shore D 50 to shore R 150. (The content of this part is limited to the hardness of hard sheet made of polymer resin. Does not it have the properties of a rigid sheet without needing to be limited?). If the hardness of the hard sheet is less than the Shore D 50, the hard sheet can easily detach from the tire seating portion, and if the hardness of the hard sheet exceeds R150, the hard sheet is fragile when subjected to external force. The rigid sheet made of a polymer resin sheet may be made of a material selected from the group consisting of polyethylene (PE), polypropylene (PP), acrylonitrile-butylene-styrene (ABS), polyamide (PA), polyoxymethylene And at least one selected from the group consisting of polyethylene terephthalate (PET), polybutylene terephthalate (PBT), modified polyphenylene oxide (mPPO), polyether ether ketone and polysulfone, Extrusion molding, injection molding, and the like. The hard sheet made of a metal sheet may be made of iron, stainless steel, copper, zinc, magnesium, titanium, tungsten or an alloy thereof, and may be manufactured by melt extrusion molding or die casting. The hard sheet made of a composite material or a laminate may be a laminated structure of a polymer resin sheet and a metal sheet, and may be a sheet molding compound, a glass fiber laminated sheet, or a carbon fiber sheet.

The surface of the hard sheet may be coated with a soft polymer resin or rubber.

8 illustrates a structure of a hard sheet formed of a hard sheet having a coating layer and a laminate according to an embodiment of the present invention. Referring to FIG. 8 (a), the hard sheet 602a has a coating layer 602b formed on a surface thereof to be coupled to the tire seating portion. The coating layer may be a soft polymer resin or rubber, and the soft polymer resin or rubber preferably has a hardness in the range of from about 40 shore A to about 80 shore. The soft polymer resin or rubber can reduce the noise generated due to friction between the hard sheet and the tire seating portion during quick brake operation and improve ride comfort by the elasticity of the coating layer. Referring to FIG. 8 (B), coating layers 602b and 602c are formed on both sides of the hard sheet 602a. The coating layer can be made of a polymer resin or rubber, and can improve the adhesive strength as well as the noise reduction and ride comfort, as well as the rigid sheet is firmly bonded to the foam tire by an adhesive or the like.

9 illustrates a structure in which a protrusion is formed on a hard sheet according to an embodiment of the present invention. Referring to Fig. 9, the deformation preventing portion 700 includes a hard sheet 701 and a protrusion 703. The protrusion 703 protrudes vertically from the tire contact surface 702 of the hard sheet and the protrusion 703 is inserted into the inside of the foam tire in the process of bonding the hard sheet 701 to the foam tire 600. The protrusion 703 may be made of the same material as the hard sheet or a different material. Although the projection is shown in the form of a cone with the top cut off and shown as being arranged in the middle of the rigid sheet, the shape and arrangement of the projection can be modified in various ways.

Fig. 10 shows examples of the protrusions formed on the tire contact surface of the hard sheet. 10A, protrusions 703 are formed on the surface of the hard sheet 701. The projections are formed in the width direction of the hard sheet (for the sake of explanation, the circumferential direction of the foam tire is the longitudinal direction of the hard sheet, And a direction perpendicular thereto is referred to as a width direction). The number of projections or the distance of the stone period can be varied. The protrusions formed in the width direction of the hard sheet function to firmly engage the hard sheet with the foam tire when a force is applied to the foam tire from the outside.

Referring to FIG. 10 (B), the projections 704 formed on the hard sheet 701 extend in the direction of the width of the hard sheet. The projections may extend in the width direction of the hard sheet. In this case, the projections are inserted into the foam tire to strengthen the bonding between the foam tire and the hard sheet, and at the same time to improve the resistance to the lateral direction deformation of the hard sheet Also. Increasing the deformation resistance of the rigid sheet in the width direction more effectively prevents the foam tire from being detached from the tubular rim when the foam tire is subjected to lateral force. The projections may extend in the longitudinal direction of the foam tire, in which case the rigid sheet can be effectively prevented from being deformed in the circumferential direction of the foam tire. The projections may extend simultaneously in the width direction and the longitudinal direction of the hard sheet. The projections extending in the width direction of the hard sheet can also function to improve the bonding force between the hard sheet and the foam tire by the effect of increasing the contact area between the hard sheet and the projections.

Fig. 11 shows various forms of the protrusions formed on the tire contact surface of the hard sheet. Referring to FIG. 11, the protrusions may have a cylindrical shape, a cone, a truncated cone, or an arrowhead shape. When the projection has an arrowhead shape, it is preferable that a hole having a shape corresponding to the foam tire is formed. The protrusion of the arrowhead shape can prevent the protrusion from falling out of the hole after the protrusion of the arrowhead shape is inserted into the hole of the foam tire due to the elastic deformation of the foam tire. The protrusions may be formed in a shape that is thicker than the lower portion in the upper or middle region even though the protrusions are not in the shape of an arrowhead. In this case, the protrusions may have an effect similar to that of the arrowhead-shaped protrusions. In the case of the protrusion extending in the direction of the area of the hard sheet, the width of the upper portion of the extended protrusion may be wider than that of the lower portion. In this case, the height of the protrusion may be reversed.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Therefore, the embodiments described in the present invention are not intended to limit the scope of the present invention but to limit the scope of the present invention. The scope of protection of the present invention should be construed according to the claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: Wheels
101: Tire 102: rim
103: spokes 104: hub
200: Clean unit 201: Limb body
202: tire insertion space 203: fixing projection
300: tubular rim 301: rim body
302: tire seating part 303: seat part edge
400: Foam tire 401: Rim insert part
402: Tire body 500: Foam tire
600: Foam tire 601: Foam tire body
602: Deformation preventing portion 602a:
602b, 602c: Coating layer 603:
700: deformation preventing portion 701: hard sheet
702: Tire contact surface
703, 704, 703a to 703d:

Claims (8)

delete delete delete delete In a foam tire which is seated and fixed to a concave-shaped tire seating portion of a tubular rim,
A ring-shaped foam tire having a convex inner circumferential surface corresponding to the concave tire seating portion of the tubular rim and having elasticity in the longitudinal direction so as to be engaged while being tightened with the tubular rim in a state of being coupled to the tubular rim; body; And
A rigid sheet having one surface bonded to the convex inner circumferential surface of the foam tire body and the other surface contacting the concave tire seating portion of the tubular rim;
The rigid sheet has a protrusion formed on its surface, and the protrusion is inserted into the foam tire body, so that the rigid sheet and the foam tire body are firmly engaged with each other,
The rigid sheet prevents the convex shape of the inner circumferential surface of the foam tire body from being elastically deformed with a hardness of Shore D 50 or more and prevents the foam tire from being separated from the tubular rim by external force,
Wherein the rigid sheet is joined to the inner circumferential main surface of the foam tire body in a plurality of directions so that the ring shaped foam tire is elastic in the longitudinal direction so as to be fastened to the tubular rim. The method of claim 5,
Wherein the protrusions are cylinders, cones, cones or truncated cones or arrowheads. The method of claim 5,
Wherein the projections have a width at the upper portion and a width larger than the width at the lower portion. The method of claim 5,
Wherein the projections extend in the direction of the width of the hard sheet.
KR1020150122482A 2015-08-31 2015-08-31 Foam tire KR101721398B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1042452B1 (en) * 2017-07-05 2019-01-14 Hsv Moulded Foams Group N V Rim and wheel assembly
KR101926299B1 (en) * 2018-02-12 2018-12-06 조영하 Tires for bicycles
CN109572326B (en) * 2018-11-20 2021-04-09 陈振瑞 High-elasticity polyurethane shock-absorbing load tire

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005313792A (en) * 2004-04-30 2005-11-10 Toyo Tire & Rubber Co Ltd Run flat tire support element fixing member and run flat tire
JP4948572B2 (en) * 2009-07-13 2012-06-06 初田拡撒機株式会社 Soft tire

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
JPS4948572B1 (en) * 1970-07-07 1974-12-21
KR101084753B1 (en) * 2009-07-14 2011-11-22 화인케미칼 주식회사 Bicycles tire and manufacturing method thereof
KR20110003861U (en) * 2009-10-13 2011-04-20 화인케미칼 주식회사 Bicycles rim

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005313792A (en) * 2004-04-30 2005-11-10 Toyo Tire & Rubber Co Ltd Run flat tire support element fixing member and run flat tire
JP4948572B2 (en) * 2009-07-13 2012-06-06 初田拡撒機株式会社 Soft tire

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