GB2403193A - Non-inflatable tyre and its manufacture - Google Patents

Non-inflatable tyre and its manufacture Download PDF

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Publication number
GB2403193A
GB2403193A GB0314965A GB0314965A GB2403193A GB 2403193 A GB2403193 A GB 2403193A GB 0314965 A GB0314965 A GB 0314965A GB 0314965 A GB0314965 A GB 0314965A GB 2403193 A GB2403193 A GB 2403193A
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GB
United Kingdom
Prior art keywords
tyre
layer
tyre layer
rim
inflatable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0314965A
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GB2403193B (en
GB0314965D0 (en
Inventor
Shun-Min Chen
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Individual
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Individual
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Publication date
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Priority to GB0314965A priority Critical patent/GB2403193B/en
Publication of GB0314965D0 publication Critical patent/GB0314965D0/en
Publication of GB2403193A publication Critical patent/GB2403193A/en
Application granted granted Critical
Publication of GB2403193B publication Critical patent/GB2403193B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B60C7/101—Tyre casings enclosing a distinct core, e.g. foam
    • B60C7/1015—Tyre casings enclosing a distinct core, e.g. foam using foam material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/02—Solid tyres ; Moulds therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/04—Resilient fillings for rubber tyres; Filling tyres therewith
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Tires In General (AREA)

Abstract

The tyre comprises a rim 110, an outer tyre layer 130 formed by rotational molding or injection molding to encircle the rim and having at least an injection orifice 131 at a side surface thereof for injecting material of an inner tyre layer, and an inner tyre layer made of foamed material, wherein the material of the inner tyre layer is injected into and foamed in the outer tyre layer to form the inner tyre layer such that the outer tyre layer, the inner tyre layer, and the rim are tightly connected with one another. A manufacture method of the non-inflatable tyre comprises the steps: producing a rim 110 inserting the rim into a die and forming an outer tyre layer 130 having at least an injection orifice 131 at a side surface thereof for injecting material of an inner tyre layer by rotational molding or injection molding, injecting foamed material of the inner tyre layer through the injection orifice of the outer tyre layer, and foaming the material of the inner tyre layer to make the outer tyre layer, the inner tyre layer, and the rim be tightly connected with one another.

Description

24031 93 Non-inflatable tyre and manufacture method thereof
Field of the Invention
The present invention relates generally to a non-inflatable tyre and manufacture method thereof, and more particularly to a non-inflatable tyre comprising a rim, an inner tyre layer, and an outer tyre layer and manufacture method thereof.
Background of the Invention
With advancement ol the society and the promotion of life quality, variable designs occur to strollers and children toys. Traditional inflatable tyres have an outer tyre layer made of rubber and a hollow inner tyre layer. These traditional inflatable tyres must be filled with air into inner tyre layer when used, which makes the inflatable tyres have the risk of implosion or become an annoyance due to having to inflate the tyres from thee to time.
In view of the above dcliciencies of inflatable tyres, a non-inflatable tyre is developed. However, the entire traditional non-inflatable tyre itself is constructed by foamed material such as EVA with foaming agent. Because the traditional non-inflatable tyre is thoroughly manufactured by foam molding, the tread patterns formed on the tyre fail to be of a taper near vertical angle corresponding to the die relief. Moreover, the properties of the EVA itself are different from those of the rubber, so that the characteristics of the traditional non-inflatable tyre, such as wear resistance and resiliency, arc worse.
An improved tyre flier the above non-inflatable tyre is disclosed in US patent No. 2002/0036040A I where the tyre has an outer tyre layer 10, an inner tyre layer 20, and a rim 30 as the exploded perspective view shown in Fig. 1. The inner tyre layer 20 is made of foamed material and the outer tyre layer 10 is made of rubber to form an annular hollow interior. The manufacture processes include: first, respectively producing the outer tyre layer 10, inner tyre layer 20, and rim 30, next, mounting the inner tyre layer 20 around the rim 30, and finally, assembling the outer tyre layer 10 around the outer periphery of the inner tyre layer 20. It is the advantage of this type of traditional non-inflatable tyrc that the tyre is more resilient due to the inner tyre layer being made of foamed material and the special tread patterns are easily formed on the outer tyre layer to upgrade wear resistance of the tyre due to the outer tyre layer being made of rubber. However' because this kind of non-inflatable tyre must be mechanically assembled through two steps, the reliability of connection among the outer tyre layer 10' inner tyre layer 20, and rim 30 is low, which results in the outer tyre layer 10 or inner tyre layer 20 having tendency of being escaped from the rim 30 and causes safety concerns when the tyre is used in addition to shorter lifespan.
Summary of the Invention
In view of the above-mentioned problems of prior arts, the present invention provides a non-inflatable tyre and manufacture method thereof. The tyre is not only of greater resiliency but also ol' better wear resistance. Besides, the outer tyre layer, inner tyre layer, and rim are tightly connected with each other so that it is difficult for the outer tyre layer and inner tyre layer to be escaped from the rim.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice ol'the invention. The objectives and advantages of the invention will be realized and attained by the structures and steps particularly pointed out in the written description and claims hereof as well as the appended drawings.
To achieve these and other advantages and according to the purpose of the present invention, as embodied and broadly described, a manufacture method of a non-inflatable tyre comprises the hallowing steps: producing a rim, inserting the rim into a die and forming an outer tyre layer having at least an injection orifice at a side surface thereof for injecting material of an inner tyre layer by rotational molding, injecting foamed material of the inner tyre layer through the injection orifice of the outer tyre layer, and foamhig the material of the inner tyre layer to make the outer tyre layer, the inner tyre layer' and the rim be tightly connected with one another.
It is preferred that a mamfacturc method of a non-inflatable tyre, comprising the following steps: producing a rim, inserting the rim into a die and forming an outer tyre layer having at least an in jccthn orifice at a side surface thereof for injecting material of an inner tyre layer by injection molding, injecting foamed material of the inner tyre layer through the injection orifice of the outer tyre layer, and foaming the material of the inner tyre layer to make the outer tyre layer, the inner tyre layer, and the rim be tightly connected with one another.
A non-inflatable tyre comprises a rim, an outer tyre layer formed by rotational molding to encircle the rim and having at least an injection orifice at a side surface thereof for injecting material of an inner tyre layer; and an inner tyre layer made of foamed material, wherein the material ol'the inner tyre layer is injected into the outer tyre layer through the inicction orifice of the outer tyre layer and then the material of the inner tyre layer is foamed to form the inner tyre layer such that the outer tyre layer, the inner tyre layer, and the rim are tightly connected with one another.
It is preferred that a non-innatable tyre comprises a rim, an outer tyre layer formed by injection molding to encircle the rim and having at least an injection orifice at a side surface thereof t'or in jecting material of' en inner tyre layer; and an inner tyre layer made of foamed material' wherein the material of the inner tyre layer is injected into the outer tyre layer through the injection orifice of the outer tyre layer and then the material of'the inner tyre layer is foamed to form the inner tyre layer such that the outer tyre layer' the inner tyre layer, and the rim are tightly connected with one another.
Alternatively the material of'the rim is metal or plastics.
Advantageously, the material of the outer tyre layer is rubber, TPE, TPR, or PVC.
Advantageously' the material of the inner tyre layer is EVA or PU added with foaming agent.
It should be understood that both the forgoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
Brief Description of the Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description serve to explain the principle ofthe invention. In the drawings: Fig. I is an exploded perspective view illustrating a traditional non-inflatable tyre.
Fig. 2 is a front view of the non-inflatable tyre according to the present invention.
Fig. 3 is a sectional view of'the non-inflatable tyre according to Fig. 2.
Fig. 4 is a flow chart of the manufacture method of non-inflatable tyre according to the present invention.
Detailed Description of the Invention
The elements of the present invention similar to those of the prior art are named the same but numbered different.
With reference to Fig. 2 and 3, the front view and sectional view of the non-inflatable tyre 10() according to the present invention are respectively illustrated.
As shown in Fig. 3. the non-inflatable tyre 100 according to the present invention comprises a rim 110, an inner tyre layer 120, and an outer tyre layerl 30. As shown in Fig. 2, the outer tyre layer 130 has at least an injection orifice 131 at the side surface thereof for injecting the foamed material to form the inner tyre layer 120. The number of injection orifice can be changed dependent on the material of the inner tyre layer 120. When the number ol'in jection orifices is plural, they are evenly distributed at the side surface of the outer tyrc layer 130.
The rim 110 is made of harder material such as metal or harder plastic material.
The outer tyrc layerl30 has tread on outer surface thereof and can be made of wear-resistant rubber, '1'1', Tell, or PVC etc. The inner tyre layer 120 is made of foamed material such as F,VA or Ptl added with foaming agent.
The steps include at first producing a rim 110, next, inserting the rim 110 into a die ( not shown), then forming an outer tyre layer to encircle the rim 110 by rotational molding or injection molding. The outer tyre layer 130 has at least one injection orifice 131 at side surface thereof for injecting foamed material into the outer tyre layer 130 to foam and form the inner tyre layer 120 between the outer tyre layer 130 and rim 110, which constructs the non-inflatable tyre 100 according to the present invention.
As shown in Fig. 3 because the outer tyre layerl30 has a non-closed section with an annular opening formed on the inner periphery, the outer tyre layerl30, inner tyre layerl20, and rim 110 are firmly and integrally connected with each other after the material of the inner tyre layer 120 is foamed.
The manufacture method of the non-inflatable tyre according to the present invention will be described hereinafter and the flow chart thereof is shown in Fig. 4 which includes the t'ollowing steps: step S10, producing a rim 110, step S20, inserting the rim 110 into a die ( not shown) and then forming an outer tyre layer having at least one injection orifice 131 at side surface thereof t'or injecting foamed material of the inner tyre layerl20 by rotational molding or injection molding, step S30, injecting foamed material of the inner tyre layerl20 through injection orifice 131 of the outer tyre layerl 30, and step S40, foaming the foamed material of the inner tyre layer 120 to make the outer tyre layer 130, inner tyre layerl 20, and rim 110 be firmly and integrally connected with one another.
The non-inflatable tyrc 100 manufactured by the method of the present invention is of the advantages of greater resiliency and better wear resistance. Besides, because the mechanical assemblies among the outer tyre layer] 30, inner tyre layerl20, and rim are not necessary, not only can the non-inflatable tyres 100 be mass-produced but also the connections among the components of the non-inflatable tyre 100 are integrated and firm so as to upgrade safety and lifespan of the tyre.
This invention has been disclosed in terms of specific embodiments. It will be apparent that many modifications can be made to the disclosed structures and steps without departing lrom the invention. Therefore, it is the intent of the appended claims to cover all such variations and modifications as come within the true sprit and scope of this invention.

Claims (12)

  1. What is claimed is 1. A manufacture method of a non-inBatable tyre,
    comprising the following steps: producing a rim; inserting the rim into a die and forming an outer tyre layer having at least an injection orifice at a side surface thereof'for injecting material of an inner tyre layer by rotational molding; injecting foamed material of' the inner tyre layer through the injection orifice of the outer tyre layer; and foaming the material of'the inner tyre layer to make the outer tyre layer, the inner tyre layer, and the rim be tightly connected with one another.
  2. 2. A manufacture method of' a non-inflatable tyre, comprising the following steps: producing a rim; inserting the rim into a die and t'orming an outer tyre layer having at least an injection orifice at a side surface thereof for in jecting material of an inner tyre layer by injection molding; injecting foamed material of the inner tyrc layer through the injection orifice of the outer tyre layer; and foaming the material of the inner tyre layer to make the outer tyre layer, the inner tyre layer, and the rim be tightly connected with one another.
  3. 3. The manufacture method of the non-inflatable tyre as claimed in claim I or 2, wherein the material of'the rim is metal.
  4. 4. The manufacture method of the non-inflatable tyre as claimed in claim I or 2, wherein the material of'the rhn is plastics.
  5. 5. The manufacture method of the non-inflatable lyre as claimed in claim I or 2, wherein the material of the outer tyre layer is rubber, TPE, TPR, or PVC.
  6. 6. The manut'acturc method of the non-inflatable tyre as claimed in claim I or 2, wherein the material of the inner tyre layer is EiVA or PU added with foaming agent.
  7. 7. A non-inflatable tyre, comprising: a rim; an outer tyre layer f'orrned by rotational molding to encircle the rim, having at least an injection ori lace at a side surt;ace thereof'for injecting material of an inner tyre layer; and an inner tyre layer made of foamed material; wherein the material of the inner tyre layer is injected into the outer tyre layer through the injection orifice ol'the outer tyre layer and then the material of the inner tyre layer is foamed to form the inner tyre layer such that the outer tyre layer, the inner tyre layer, and the rim are tightly connected with one another.
  8. 8. A non-inflatable tyre, comprising: a rim; an outer tyre layer formed by injection molding to encircle the rim, having at least an injection orifice at a side surf ce thereof for injecting material of an inner tyre layer; and an inner tyre layer made ol'toamed material; wherein the material ol' the inner tyre layer is injected into the outer tyre layer through the injection orifice of the outer tyre layer and then the material of the inner tyre layer is foamed to form the inner tyre layer such that the outer tyre layer, the inner tyre layer, and the rim are tightly connected with one another.
  9. 9. The non-inflatalec tyre as claimed in claim 7 or 8, wherein the material of the rim is metal.
  10. IO.'l'he non-inflatable tyre as claimed in claim 7 or 8, wherein the material of the rim is plastics.
  11. 11. The non-inflatable tyre as claimed in claim 7 or 8, wherein the material of the outer tyre layer is rubber, TPF., 'I'PR, or PVC.
  12. 12. The non-inflatable tyrc as claimed in claim 7 or 8, wherein the material of the inner tyre layer is EVA or l'U added with foaming agent.
GB0314965A 2003-06-26 2003-06-26 Non-inflatable tyre and manufacture method thereof Expired - Lifetime GB2403193B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0314965A GB2403193B (en) 2003-06-26 2003-06-26 Non-inflatable tyre and manufacture method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0314965A GB2403193B (en) 2003-06-26 2003-06-26 Non-inflatable tyre and manufacture method thereof

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GB0314965D0 GB0314965D0 (en) 2003-07-30
GB2403193A true GB2403193A (en) 2004-12-29
GB2403193B GB2403193B (en) 2006-04-19

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103192469A (en) * 2012-01-06 2013-07-10 四川远星橡胶有限责任公司 Inner tire vulcanization process
GB2580989A (en) * 2019-01-30 2020-08-05 Wonderland Switzerland Ag Process for making a wheel assembly for a lightweight vehicle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110722932A (en) * 2019-09-03 2020-01-24 计文华 Double-material double-density solid tire and manufacturing method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999055541A1 (en) * 1998-04-23 1999-11-04 Ciro Nogueira Non-pneumatic tyre for industrial and off-the-road use and method for manufacturing it

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999055541A1 (en) * 1998-04-23 1999-11-04 Ciro Nogueira Non-pneumatic tyre for industrial and off-the-road use and method for manufacturing it

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103192469A (en) * 2012-01-06 2013-07-10 四川远星橡胶有限责任公司 Inner tire vulcanization process
CN103192469B (en) * 2012-01-06 2016-05-04 四川远星橡胶有限责任公司 A kind of tyre tube vulcanizer technique
GB2580989A (en) * 2019-01-30 2020-08-05 Wonderland Switzerland Ag Process for making a wheel assembly for a lightweight vehicle
GB2580989B (en) * 2019-01-30 2022-10-12 Wonderland Switzerland Ag Process for making a wheel assembly for a lightweight vehicle

Also Published As

Publication number Publication date
GB2403193B (en) 2006-04-19
GB0314965D0 (en) 2003-07-30

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PE20 Patent expired after termination of 20 years

Expiry date: 20230625