CN113799542A - Disconnected inner tube with non-circular section and tire - Google Patents
Disconnected inner tube with non-circular section and tire Download PDFInfo
- Publication number
- CN113799542A CN113799542A CN202110557902.5A CN202110557902A CN113799542A CN 113799542 A CN113799542 A CN 113799542A CN 202110557902 A CN202110557902 A CN 202110557902A CN 113799542 A CN113799542 A CN 113799542A
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- Prior art keywords
- inner tube
- plug
- break
- section
- sleeve
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- 210000001503 joint Anatomy 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000003780 insertion Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 230000013011 mating Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Images
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
- B60C5/00—Inflatable pneumatic tyres or inner tubes
- B60C5/10—Inflatable pneumatic tyres or inner tubes formed as a single discontinuous ring with contiguous ends which may be connected together
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The invention provides a disconnected inner tube with a non-circular section, which comprises: the inner tube tyre comprises a strip-shaped inner tube tyre body, wherein in the section of the inner tube tyre body along the thickness direction, under the condition of keeping the perimeter of the section unchanged, the outer diameter of the inner tube tyre body is consistent with that of the inner tube tyre with a circular section, and the inner diameter of the inner tube tyre body is increased compared with that of the inner tube tyre with a circular section; the outer diameter is the maximum distance of the inner tube relative to the central axis, and the inner diameter is the minimum distance of the inner tube relative to the central axis. The disconnected inner tube with the non-circular section reduces curvature influence and tensile stress, and improves the condition of poor joint. The invention also provides a tire, which comprises an inner tube, an outer tube and a rim; the inner tube is a break-off inner tube with a noncircular section.
Description
Technical Field
The invention relates to the field of tires, in particular to an inner tube.
Background
The tire generally comprises an inner tube and an outer tube, wherein the conventional inner tube is continuous and circular, and when the inner tube needs to be replaced or repaired when the tire is damaged, the inner tube needs to be completely taken down from the outer tube, and then the inner tube is repaired or a new inner tube is plugged back into the tire. In the process, the time for dismounting the inner tube or replacing the inner tube is long, and the efficiency for replacing the inner tube is low.
In order to overcome the problem, the inner tube of the break-open type is appeared on the market, the inner tube of the break-open type depends on the butt joint of the two joints to form a closed loop, the butt joint relation of the two joints can be easily released in the deflation state, so that the inner tube of the break-open type is changed into a strip shape, and the inner tube of the break-open type is pulled out from the outer tube, and the time required for replacing the inner tube of the break-open type can be greatly simplified. However, despite the obvious advantages of the break-away tubes, no stable market occupancy has been established on the market, because such tubes also have several drawbacks:
1. one of the traditional break-away types is to provide rubber members at the ends of the two connectors that snap fit into each other, which are not themselves inflated. The clamping fit is completely carried out by the shape of the rubber piece. The connection strength of the structure is limited, and the inner tube is easy to separate in the installation process, so that the use is influenced. And the part of the two rubber pieces clamped easily forms a gap, so that the air pressure of the gap part is obviously smaller than the air pressure in the inner tube, and the deformation of the tire body is increased once the part contacts the ground in the running process, so that the whole running process is full of jolt feeling.
2. The connection relation of clamping fit is that the inner tube is difficult to keep in a clamping state under the non-inflation state, so that the continuity of the inner tube is difficult to ensure in the process of loading the inner tube into the outer tire.
For this reason, the company provides a structure for holding both ends of the inner tube by using a holding force after inflation, but the structure is prone to cracking and sagging of the joint portion during molding vulcanization.
Disclosure of Invention
The invention aims to solve the main technical problem of providing a disconnected inner tube with a non-circular section, which reduces the influence of curvature and tensile stress and improves the condition of poor joint.
In order to solve the above technical problem, the present invention provides a break-away inner tube with a non-circular cross section, comprising: in the section of the inner tire body along the thickness direction, under the condition of keeping the perimeter of the section unchanged, the outer diameter of the inner tire body is consistent with that of the inner tire with a circular section, and the inner diameter of the inner tire body is increased compared with that of the inner tire with a circular section;
the outer diameter is the maximum distance of the inner tube relative to the central axis, and the inner diameter is the minimum distance of the inner tube relative to the central axis.
In a preferred embodiment: the difference value between the outer diameter and the inner diameter is 60% -90% of the difference value between the outer diameter and the inner diameter of the inner tube with a circular surface.
In a preferred embodiment: the inner diameter is greater than the rim diameter.
In a preferred embodiment: the two ends of the inner tube carcass are respectively provided with a first closed surface and a second closed surface, one end of the inner tube carcass extends out of a sleeve along the length direction of the inner tube carcass, and the first closed surface and the second closed surface splice the strip-shaped inner tube carcass into an inner tube which is connected end to end through sleeve butt joint;
after the inner tube carcass is inflated, the first closed surface and the second closed surface expand along the radial direction and are limited and clasped in the sleeve by the sleeve.
In a preferred embodiment: the second closed surface is a slot, and the free end of the second joint extends out of the sleeve along the length direction of the inner tire body.
In a preferred embodiment: the first closed surface is used for connecting a first plug and a second plug along the length of the inner tube carcass, and when the first plug is inserted into the slot, the second plug is placed in the sleeve to splice the strip-shaped carcass into the inner tube connected end to end.
In a preferred embodiment: the first plug and the second plug are provided with a first air cavity and a second air cavity which are communicated with each other, and a third air cavity is arranged between the groove wall of the slot and the inner wall of the second connector along the radial direction; the first air cavity, the second air cavity and the third air cavity are respectively communicated with an inflation cavity of the inner tire body.
In a preferred embodiment: the first plug and the second plug are connected through a first limiting matching surface, and the second plug and the side wall of the first connector are connected through a second limiting matching surface;
when the first plug and the slot form the splicing matching, the limiting surface and the first limiting matching surface are abutted and limited along the splicing direction, and the second limiting matching surface and the end surface of the cylinder wall of the sleeve are abutted and limited along the splicing direction;
in a preferred embodiment: the slot is an arc-shaped slot, and the slot, the limiting surface and the sleeve barrel wall are transited through an arc angle; the first plug is correspondingly an arc-shaped plug, and the first plug, the first limit matching surface, the second plug, the second limit matching surface and the side wall of the first connector are in arc angle transition.
The invention also provides a tire, which comprises an inner tube, an outer tube and a rim; the inner tube is a break-off inner tube with a noncircular section.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. the invention provides a disconnected inner tube with a noncircular section, which reduces the difference between the outer diameter and the inner diameter by increasing the inner diameter, reduces the curvature influence and tensile stress and improves the condition of poor joint.
2. The improved section of the disconnected inner tube with the noncircular section is flatter than that of a traditional O-shaped section, the inner periphery of a joint is also flatter, defects such as arching, wrinkles and the like caused by stress concentration are improved, the dependence of the whole tube on strict control of folding length and folding width tolerance is reduced, and the operation writing is greatly improved.
3. The disconnected inner tube with the noncircular section has the function of automatically correcting the butt-joint closed end, is not easy to be misaligned due to torsion during tire loading and butt-joint, and prolongs the service life. The traditional inner tube with the O-shaped section is easy to twist, so that the inner tube is used in a folded state.
Drawings
FIG. 1 is a cross-sectional view of a conventional inner tube;
FIG. 2 is a cross-sectional view of an inner tube according to a preferred embodiment of the present invention;
FIG. 3 is a cross-sectional view of a first fitting in a preferred embodiment of the invention;
FIG. 4 is a cross-sectional view of a second fitting in a preferred embodiment of the invention;
FIG. 5 is a cross-sectional view of the tire body in an uninflated condition in a preferred embodiment of the present invention;
FIG. 6 is a comparison of the portions of FIG. 5, uninflated and inflated, with portions broken away and portions not inflated;
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like, are used in a broad sense, and for example, "connected" may be a wall-mounted connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, and those skilled in the art will understand the specific meaning of the terms in the present invention specifically.
Referring to fig. 1 and 2, the present invention provides a break-away inner tube having a non-circular cross-section, comprising: in the section of the inner tire body along the thickness direction, under the condition of keeping the perimeter of the section unchanged, the outer diameter R1 is consistent with the inner tire with a circular section, and the inner diameter R2 is increased compared with the inner tire with a circular section;
the outer diameter R1 is the maximum distance of the inner tube relative to the central axis X, and the inner diameter R2 is the minimum distance of the inner tube relative to the central axis X. Specifically, the difference between the outer diameter R1 and the inner diameter R2 is 60% -90% of the difference between the outer diameter and the inner diameter of the inner tube with a circular surface; the central axis X is defined as: the section of the tire takes the central line as an axis, and the complete tire is formed after one rotation.
The disconnected inner tube with the noncircular section reduces the difference between the outer diameter and the inner diameter by increasing the inner diameter, reduces the curvature influence and the tensile stress and improves the condition of poor joint. Compared with the traditional O-shaped section, the improved section is flatter, the inner periphery of the joint is flatter, the defects of arching, wrinkles and the like caused by stress concentration are improved, the dependence of the whole tire on strict control of folding length and folding width tolerance is reduced, and the operation writing is greatly improved. And the improved butt joint closed end has an automatic correction function, the butt joint is not easy to be incorrect due to torsion during tire installation and butt joint, and the service life is prolonged. The traditional inner tube with the O-shaped section is easy to twist, so that the inner tube is used in a folded state.
In this embodiment, the inner diameter is greater than the rim diameter. The traditional inner tube with an O-shaped section has an inner diameter smaller than the diameter of the rim edge. The improved inner tube is easier to be sleeved into the outer tube and the rim, and the butt closed end is prevented from being pulled open during tire installation and adjustment, so that the service life is prolonged.
In the embodiment, as shown in fig. 3-6, a first joint 11 and a second joint 12 are respectively arranged at two ends of the elongated inner tire body; the free ends of the first joint 11 and the second joint 12 are respectively provided with a first closed surface 111 and a second closed surface 121, and the free end of the second joint 12 also extends out of a sleeve 122 along the length direction of the inner tire body;
the first joint 11 and the second joint 12 are butted through a sleeve 112 to splice the strip-shaped inner tube body into an end-to-end inner tube.
In this embodiment, the first sealing surface 111 and the second sealing surface 121 are in a mutual insertion type connection relationship in an uninflated state, and as a simple replacement, the first sealing surface 111 and the second sealing surface 121 may be directly abutted without an insertion relationship, which belongs to a simple replacement of this embodiment and is not described again.
In order to realize the insertion relationship between the first closing surface 111 and the second closing surface 121, the second closing surface 121 is a slot. The first closed surface 111 is used for connecting a first plug 1111 and a second plug 1112 along the length direction of the inner tube carcass, and when the first plug 1112 is inserted into the slot, the second plug 1112 is arranged in the sleeve 122 to splice the strip-shaped inner tube carcass into an end-to-end inner tube.
Specifically, the first plug 1111 and the second plug 1112 have a first air cavity 1113 and a second air cavity 1114 which are communicated with each other, and a third air cavity 123 is arranged between the slot wall of the slot and the inner wall of the second connector 12 along the radial direction; the first air cavity 1113, the second air cavity 1114 and the third air cavity 123 are respectively communicated with an inflation cavity of the inner tire body. Therefore, when the inner tire body is inflated, the first plug 1111, the second plug 1112 and the slot can be expanded along the radial direction, the first plug 1111 and the slot are abutted to each other and tightly matched after being expanded, the second plug 1112 is tightly matched with the inner wall of the sleeve 122 after being expanded, and the sleeve 122 does not actively expand in the inflation process, so that the second plug 1112 and the first plug 1111 are clasped in the sleeve 122 by the sleeve along with the expansion of the second plug 1112 at any time. And the existence of the third air cavity 123 enables the slot to be extruded along the radial upper and lower sides in the expansion process, so that the slot and the first plug 1111 can be fully held tightly. As the expansion progresses, the first plug 1111 and the second plug 1112 gradually change from the separated state to the clasped state, and the air originally present therebetween flows out through the gap therebetween.
More specifically, the slot wall of the slot is connected to the wall of the sleeve 122 by a limiting surface 124. The first plug 1111 and the second plug 1112 are connected through a first limit mating surface 1115, and the second plug 1112 is connected with the side wall of the first connector 11 through a second limit mating surface 1116;
when the first plug 1111 and the slot form an insertion fit, the fitting surface of the limiting surface 124 and the first limiting surface 1115 abuts against and limits along the insertion direction, and the second limiting fitting surface 1116 and the end surface of the cylinder wall of the sleeve 122 abut against and limit along the insertion direction. The two limit fit relations can provide clear prompt for the plugging process, and the situation that the user is inserted too shallowly or deeply in the plugging process is avoided.
In this embodiment, in order to reduce the problem of stress concentration, the slot is an arc-shaped slot, and the slot, the limiting surface 124, and the cylinder wall of the sleeve 122 are transited through an arc angle; in this embodiment, a section of the slot along the axial direction is a tapered arc surface, and as a simple alternative in this embodiment, the section of the slot along the axial direction may also be one of an arc surface and a long strip-shaped arc surface, or a combination of the above various arc-shaped sections.
The first plug 1111 is correspondingly an arc-shaped plug, and the first plug 1111, the first limit mating surface 1115, the second plug 1112, the second limit mating surface 1116 and the side wall of the first joint 11 are also transited through an arc angle. Just can guarantee after the fillet transition that first plug 1111 and second plug 1112 possess better deformability to can lean on under the grafting of following the non-inflation state becomes the inflation state and connect.
The following preferred designs are also provided in this example: the sidewall of the sleeve 122 is 50% -70% of the sidewall thickness of the inner tire body. Where the sidewall thickness of the sleeve 122 and the sidewall thickness of the inner tire carcass are both widths in the uninflated state. The purpose of this arrangement is that the sleeve 122, after superimposing the thickness of the second plug 1112, can be the same as the sidewall thickness of the tire carcass, thereby avoiding the bumpy feel during travel due to uneven thickness.
The length of the sleeve 122 is 5-10mm greater than the cross-sectional width of the inner tire carcass. This ensures that the sleeve 122 has a depth such that the second spigot 1112 is not easily released from the sleeve 122 and slides off.
The section of the slot along the axial direction is an arc-shaped surface, and the ratio of the arc length of the slot to the section perimeter of the inner tire body is larger than the expansion ratio of the inner tire body after being inflated.
Specifically, the section of the slot along the axial direction is an arc-shaped surface, and the arc length of the slot is more than 120% of the circumference of the section of the inner tire carcass. The purpose of this is to make the slot possess certain length, make it be difficult to break after the inflation is stretched.
In this embodiment, the outer walls of the first plug 1111 and the second plug 1112 and the inner wall of the sleeve 122 are frosted surfaces, respectively, so as to increase the friction force of the plugging portion. Meanwhile, the inner tube is provided with salient points or patterns for increasing friction force on the outer wall, and the positions of the salient points and the patterns correspond to the holding positions of a user during the insertion of the inner tube.
The embodiment also provides a tire, which comprises an inner tube, an outer tube and a rim; the inner tube is a break-off inner tube as described above. After the inner tube is used, the time for replacing the inner tube can be shortened to five minutes from the traditional half hour, the efficiency for replacing the inner tube is greatly improved, and the tire using the inner tube has no bumpiness in the driving process and high comfort level. Because the inner tube overcomes the problem of stress concentration, the conditions of tire bulging and tire burst are not easy to occur after long-time running.
The above description is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art can make insubstantial changes in the technical scope of the present invention within the technical scope of the present invention, and the actions infringe the protection scope of the present invention are included in the present invention.
Claims (10)
1. A break-off inner tube with a non-circular section is characterized by comprising: the inner tube tyre comprises a strip-shaped inner tube tyre body, wherein in the section of the inner tube tyre body along the thickness direction, under the condition of keeping the perimeter of the section unchanged, the outer diameter of the inner tube tyre body is consistent with that of the inner tube tyre with a circular section, and the inner diameter of the inner tube tyre body is increased compared with that of the inner tube tyre with a circular section;
the outer diameter is the maximum distance of the inner tube relative to the central axis, and the inner diameter is the minimum distance of the inner tube relative to the central axis.
2. A break-away inner tube of noncircular cross-section according to claim 1, wherein: the difference value between the outer diameter and the inner diameter is 60% -90% of the difference value between the outer diameter and the inner diameter of the inner tube with the circular section.
3. A break-away inner tube of noncircular cross-section according to claim 1, wherein: the inner diameter is greater than the rim diameter.
4. A break-away inner tube of noncircular cross-section according to any one of claims 1 to 3, wherein: the two ends of the inner tube carcass are respectively provided with a first closed surface and a second closed surface, one end of the inner tube carcass extends out of a sleeve along the length direction of the inner tube carcass, and the first closed surface and the second closed surface splice the strip-shaped inner tube carcass into an inner tube which is connected end to end through sleeve butt joint;
after the inner tube carcass is inflated, the first closed surface and the second closed surface expand along the radial direction and are limited and clasped in the sleeve by the sleeve.
5. A break-away inner tube of noncircular cross-section according to claim 4, wherein: the second closed surface is a slot, and the free end of the second joint extends out of the sleeve along the length direction of the inner tire body.
6. A break-away inner tube of noncircular cross-section according to claim 5, wherein: the first closed surface is used for connecting a first plug and a second plug along the length of the inner tube carcass, and when the first plug is inserted into the slot, the second plug is placed in the sleeve to splice the strip-shaped carcass into the inner tube connected end to end.
7. A break-away inner tube of noncircular cross-section according to claim 6, wherein: the first plug and the second plug are provided with a first air cavity and a second air cavity which are communicated with each other, and a third air cavity is arranged between the groove wall of the slot and the inner wall of the second connector along the radial direction; the first air cavity, the second air cavity and the third air cavity are respectively communicated with an inflation cavity of the inner tire body.
8. A break-away inner tube of noncircular cross-section according to claim 7, wherein: the first plug and the second plug are connected through a first limiting matching surface, and the second plug and the side wall of the first connector are connected through a second limiting matching surface;
when the first plug and the slot form the splicing matching, the limiting surface and the first limiting matching surface are abutted and limited along the splicing direction, and the second limiting matching surface and the end surface of the cylinder wall of the sleeve are abutted and limited along the splicing direction.
9. A break-away inner tube of noncircular cross-section according to claim 8, wherein: the slot is an arc-shaped slot, and the slot, the limiting surface and the sleeve barrel wall are transited through an arc angle; the first plug is correspondingly an arc-shaped plug, and the first plug, the first limit matching surface, the second plug, the second limit matching surface and the side wall of the first connector are in arc angle transition.
10. A tire comprises an inner tube, an outer tube and a rim; it is characterized in that the inner tube is a break-open inner tube with a non-circular section, which is described in any one of 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110557902.5A CN113799542A (en) | 2021-05-21 | 2021-05-21 | Disconnected inner tube with non-circular section and tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110557902.5A CN113799542A (en) | 2021-05-21 | 2021-05-21 | Disconnected inner tube with non-circular section and tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113799542A true CN113799542A (en) | 2021-12-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110557902.5A Pending CN113799542A (en) | 2021-05-21 | 2021-05-21 | Disconnected inner tube with non-circular section and tire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113799542A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4293018A (en) * | 1979-04-09 | 1981-10-06 | Compagnie Generale Des Etablissements Michelin | Tire for two-wheel vehicle |
| CN101018679A (en) * | 2004-08-03 | 2007-08-15 | 株式会社普利司通 | Air bladder for safety tire |
| CN109895559A (en) * | 2019-01-31 | 2019-06-18 | 厦门正新实业有限公司 | The breakaway-element inner tube of a tyre and tire |
| CN209904456U (en) * | 2019-01-31 | 2020-01-07 | 厦门正新实业有限公司 | Disconnected inner tube and tire |
| CN216033538U (en) * | 2021-05-21 | 2022-03-15 | 厦门正新实业有限公司 | Disconnected inner tube with non-circular section and tyre |
-
2021
- 2021-05-21 CN CN202110557902.5A patent/CN113799542A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4293018A (en) * | 1979-04-09 | 1981-10-06 | Compagnie Generale Des Etablissements Michelin | Tire for two-wheel vehicle |
| CN101018679A (en) * | 2004-08-03 | 2007-08-15 | 株式会社普利司通 | Air bladder for safety tire |
| CN109895559A (en) * | 2019-01-31 | 2019-06-18 | 厦门正新实业有限公司 | The breakaway-element inner tube of a tyre and tire |
| CN209904456U (en) * | 2019-01-31 | 2020-01-07 | 厦门正新实业有限公司 | Disconnected inner tube and tire |
| CN216033538U (en) * | 2021-05-21 | 2022-03-15 | 厦门正新实业有限公司 | Disconnected inner tube with non-circular section and tyre |
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