CN1250388C - Method for mfg. tyre for vehicle wheels, tyre which can be obtained by said method, and vehicle wheel comprising said tyre - Google Patents

Method for mfg. tyre for vehicle wheels, tyre which can be obtained by said method, and vehicle wheel comprising said tyre Download PDF

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Publication number
CN1250388C
CN1250388C CN 99808574 CN99808574A CN1250388C CN 1250388 C CN1250388 C CN 1250388C CN 99808574 CN99808574 CN 99808574 CN 99808574 A CN99808574 A CN 99808574A CN 1250388 C CN1250388 C CN 1250388C
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China
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mentioned
tire
insert
annular
casing ply
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CN1309601A (en
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雷纳托·卡雷塔
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Pirelli and C SpA
Pirelli Tyre SpA
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Pirelli Coordinamento Pneumatici SpA
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Priority claimed from EP98110354A external-priority patent/EP0922592B1/en
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Abstract

In a tyre for vehicles, the formation of each bead reinforcing structure (4) envisages that, after laying of a first series of elongated sections (13) defining axially inner terminal zones (15) of a carcass ply (3), an annular anchoring insert (19) consisting of a wire wound in axially adjacent turns is formed on an end portion (17) directed axially towards the outside of the respective zone. A stiffening element (20) tapering radially away from the axis of the tyre is then formed on each inner terminal zone (15). A second series of elongated sections (14) is then laid, completing the manufacture of the carcass ply (3) with the formation of axially outer terminal zones (16) which are superimposed on the stiffening elements (20). An additional annular insert (23) is formed on an end portion (18) of each outer terminal zone (16) arranged radially superimposed on the anchoring insert (19). The tyre according to the invention may be associated with a symmetrical rim which has two lateral portions designed to form the bead seats for engagement with the corresponding tyre beads, which are defined by frustoconical surfaces converging towards the axis of rotation of the rim, away from the equatorial plane thereof.

Description

The method of tire, the tire of this method manufacturing and the wheel of this tire make wheels
Technical field
The present invention relates to the to make wheels method of tire, this method may further comprise the steps: form the carcass member, this member has at least one casing ply, and the stub area of this casing ply engages with the corresponding annular reinforcement that separates each other vertically; In carcass member outer fix along circumference lay band member; Stick tread ply in band member outer fix along circumference, and on two sidepiece relative positions of carcass member, stick at least one pair of sidewall.
The present invention relates to a kind of wheel tyre made from said method, this tire comprises: the carcass member, have at least one casing ply, and the stub area of this casing ply combines with the respective annular reinforcement that axially separates each other; Be with member, be attached to the position in the carcass member outside along circumference; Tread ply is attached to the position of being with the member outside along circumference; At least one pair of sidewall is attached on two sidepiece relative positions of carcass member.
The invention still further relates to tire wheel, this wheel comprises the mounting rim with bead seat, this bead seat is formed by frusto-conical face, this taper seat can be stretched from its equatorial plane by coalescence to tire axis of rotation, tire with the inventive method manufacturing has bead, and this bead is designed to accurately to embed above-mentioned bead seat.
Background technology
The tire that makes wheels comprises makes the carcass member, this carcass member is basically by one or more casing ply members that are roughly annular shape, the axial opposite side edge of this casing ply combines with the respective annular reinforcement, each annular reinforcement normally comprises along inextensible metal ring insert of circumference and filling component, this insert is commonly referred to the bead core, this filling component is made of elastomeric material, combines with the bead core in the radially outer position.
The carcass member has band member (after being attached on the carcass member) in the circumference external position, this band member has the belt of one or more formation closed-loops, this belt basically by toward each other suitably orientation and with the cord of adjacent casing ply suitably the fiber or the metal wire of orientation are formed.
Then tread ply is attached on the circumference external position of band member, this tread ply is made of the elastic material rod of suitable thickness usually.
Should be pointed out that for ease of explanation of the present invention term " elastomeric material " means whole rubber composition, promptly by the combined material that forms with at least a matrix polymer that reinforcing filler and/or all kinds processing additive suitably mix.
At last, pair of sidewalls is attached to the relative both sides of just making tire, each above-mentioned sidewall covers the side part of tire, and between so-called shoulder regions and so-called bead, this shoulder regions is near the respective side edges of tread ply, and bead is configured on the corresponding bead core.
Conventional production methods is to make earlier above-named tyre element apart from each other basically, when making tire these parts is fitted together then.
Proposed without recourse to producing half-finished manufacture method, thus can be in the step of making tire direct carcass structure parts fabrication portion or that have.
For example, United States Patent (USP) 5453140 discloses a kind of method and apparatus that forms casing ply, method is the many cord parts of lay on the supporting member of shape and tire coupling, these cord parts dispose side by side along circumference, just can form these cord parts successively by cutting off the cord of sending here from bobbin out of the ordinary.
For making annular reinforcement, as everyone knows, with the opposite end that forms the cord out of the ordinary of casing ply be configured in each tire beads near, with the alternating sequence configuration, with regard to the annular anchoring insert, be configured in two relative axial positions, this insert is substantially shaped as circular crown, it is made up of wire coils, and this coil configuration is on concentric circumferences, as seen from patent EP 0664231 and patent US 5702548.
In above-mentioned technology, all cords that form a layer or multilayer casing ply are substantially along central axis configuration, the bending that can resist corresponding bead.In this case, the structural strength of bead must depend on the rigidity of the filling insert of the adding bead member made from hard elastics material very, and the character of this bead member can be subjected to the influence of temperature variation that produces because of environment and operate as normal stress.
The applicant has been found that, if the strip part suitably is laid on the ring-shaped bearing piece of rigidity, make each stripes branch comprise many cords parallel to each other and be embedded into elastic layer, make one or more casing plies in this way, then can obtain important improvement at aspect the simplification production technology and the characteristic aspect of raising tire.
For this reason, the inventor has developed different manufacture methods, and these methods constitute the theme of corresponding european patent application.
For example, a kind of manufacture method and tire are disclosed respectively in European patent application EP 0928680 and EP 928702, these methods form the carcass member by lay first and second casing plies, and each casing ply is formed by the stripes branch, and this strip part lay becomes the mutual and row arrangement along circumference.
Adopt the tire of the described method manufacturing of these patent applications to have the strip end parts partly that belongs to first and second casing plies respectively, these ends are configured in the relative both sides of bead annular reinforcing member respectively.
This configuration mode add make first and the stripes of another casing ply divide crossed orientation correspondingly to improve the tire construction intensity of close bead and sidewall sections significantly.
The manufacture method of casing ply has been proposed in the inventor's European patent application EP 0976535 equally, this method is, with the strip part of first and second groups of alternating sequence laies, belong to the opposite side that first and second groups part ends at the bead reinforcement respectively.
Therefore even also obtain to improve during in the structural strength of bead and sidewall sections at the single casing ply of lay.
Tire beads especially embeds wherein annular reinforcement and is conceived to and is configured as and can mate in a suitable manner on the respective circular bead seat on the wheel rim, this tire is combined, so that guarantee the stable connection of tire between these two wheel arrangements with this wheel rim.
More particularly, in chimeric between the circular bead seat of each bead and corresponding wheel rim is to make the blowing pressure that can use tire bead be pushed away consistently on the butt joint shoulder, and this shoulder is radially stretched from the pivot center of tire and formed the axial external margin of blowout patche.At least in tubeless tire, each the circular bead seat that is used for chimeric bead has the frusto-conical face that is called " bead seat ", and this taper seat has the extension that near the pivot center the tire equator face is assembled.Each bead is axially pushed away the equatorial plane owing to the blowing pressure, and this bead acts on an axial thrust on the corresponding bead seat, thereby can guarantee the interior gas of gas-tight seal tire ideally.
Recently proposed a kind of wheel, in this wheel, the embedding seat of tire beads has the frustum of a cone configuration, and this configuration is assembled to the pivot center of stretching from the equatorial plane gradually.The example of this wheel rim/tire combination is shown in the U.S. Patent No. 5634933.
In the embodiment that this patent proposes, be shaped as and can have annular reinforcement with the tire beads of respective seat coupling on the wheel rim, this member comprises common bead core, the stub area of casing ply vertically four foldings on this bead core.This its total shape of cross section of meridian formula carcass member has constant bending direction, and the crooked tangent line of close bead core is in substantially parallel relationship to the equatorial plane.
A kind of tire of patent WO 95/23073 explanation, its bead are particularly suitable for being contained on the wheel rim that its conical butt bead seat changes vertically outward.
By the applicant's understanding, the technical problem that will solve in this tire is to change its structure, is beneficial to its manufacturing process.In fact, in this tire, each stub area of casing ply need be folded back vertically, promptly the annular insert of doing around the hard elastics material from the outside is inwardly folding, the shape of cross section of this insert is wedge shape basically, and its bottom surface is in substantially parallel relationship to the bead seat of wheel rim.
In the zone near the wedge shape summit, the stub area of casing ply is still walked around at axial inward direction has the bead core of circular cross sectional shape substantially.Soft rubber packing elements is configured in around the zone of wedge shape ring-type insert and bead core, thereby, when the tension force that produces by the blowing pressure along the casing ply extension, this bead core trends towards vertically the outer side shifting to bead, thereby act on the inclined surface of wedge shape insert, increase bead thus and be pressed in contact pressure on the wheel rim bead seat.
The applicant also proposes a kind of tire that constitutes European patent application EP 0922592 exercise question, and the bead of this tire is suitable for being anchored on securely on the respective seat of wheel rim, and this has the conical bead seat in axial cross section outwardly.
According to the present invention, have been found that, if the bead of each tire has annular reinforcement, make this reinforcement preferably have the cross-sectional configuration that is roughly " L " shape, make the radially outer part of this configuration form integral body with one or more casing plies, and make its inner radial partly be in substantially parallel relationship to the bead seat of wheel rim, and be designed to utilize and be sent to that tension force makes bead act on a thrust on wheel rim on one or more casing plies, then can significantly simplify the manufacturing process of tire, make the bead of this tire be suitable for being contained in its conical butt bead seat and face on the outer wheel rim.
In fact the inventor finds out, can make this tire in mode easily, method is to carry the parts of tire along the radial direction of pivot center and/or with the tangential direction of the circumference bearing of trend of tire itself basically, and basically without axially-movable, this method illustrates in the method for unpub so far above-mentioned European patent application EP 0928680 that the inventor proposes and EP0928702 and No.98830472.1.
Summary of the invention
More particularly, the present invention relates to a kind of method of the tire that makes wheels, it is characterized in that, making the carcass member may further comprise the steps: in the first at least that is configured as at least one casing ply of lay on the ring-shaped bearing piece that can mate above-mentioned tire inner surface extension, this first forms the axial inner stub area of above-mentioned at least one casing ply; Lay the annular anchoring insert that at least one does not stretch along circumference, radially be stacked on the end parts of above-mentioned one or two above-mentioned axial inner stub area, the shape of cross section of this annular insert is a flat configuration, and it stretches the equatorial plane from corresponding interior extremity zone and above-mentioned tire vertically; On each interior extremity zone, stick at least one reinforcing member, this reinforcing member has at least one main portion, the shape of cross section of this main portion is taper, stretches when above-mentioned pivot center to come to a point gradually, is located substantially on the axial inner position with respect to above-mentioned annular anchoring inserts.
Preferably also carry out following steps: lay at least one second portion of above-mentioned at least one casing ply, this second portion forms the axial external end zone of above-mentioned at least one casing ply.
In a preferred embodiment, the lay second casing ply part just after laying reinforcing member makes the external end overlay area on corresponding reinforcing member, promptly be stacked in the regional relative side of above-mentioned interior extremity on.
Specifically be, dispose each annular anchoring insert, the method for configuration is to center on ring-shaped bearing piece around last at least one elongated member, the ceoncentrically wound coil of the axial adjacency of coiled.
At least one regional end parts in the said external stub area preferably is configured to against corresponding reinforcing member, and this end parts is arranged essentially parallel to above-mentioned annular anchoring insert and extends.
Preferably also carry out additional laying step, i.e. radially stacked at least one additional annular insert that does not stretch along circumference at least one regional end parts in the said external stub area, this insert are in substantially parallel relationship to above-mentioned annular anchoring insert and extend.
Can lay the additional annular insert easily, method is that around at least one elongated member, coiled is the ceoncentrically wound coil of adjacency vertically on ring-shaped bearing piece.
According to the preferred structure scheme, lay first and/or second (when existing) part of above-mentioned at least one casing ply, the method of laying is, on ring-shaped bearing piece, lay the elongated portion of at least one first group and/or second group respectively, make the circle distribution of these parts along supporting member, each above-mentioned elongated portion extends along the cross-sectional configuration of ring-shaped bearing piece, form the U glyph shape, thereby form the side part in two supporting above-mentioned end axially spaced apart from each other zones and the crown moieties of on the radially outer position between two side parts, extending.
The circular pitch of its lay of part of first group is more preferably greater than its width, and second group part is laid in the gap of its crown moieties between first group of two adjacent part, makes it form above-mentioned at least one casing ply with this adjacent part.
According to possible construction variant, lay reinforcing member and before laying the annular anchoring insert, carry out.
Can also lay like this, promptly light is laid the second portion of casing ply, and then lays the grappling insert, and the latter preferably is paved on the end parts that radially is stacked in the respective external stub area.
Can also lay like this, promptly during the second portion of laying above-mentioned at least one casing ply, the end parts in each external end zone is configured on the end parts of respective inner stub area, this end parts is stretched vertically from the equatorial plane.
Preferably also carry out a step, the main points of this step are, add at least one along the additional annular insert that circumference does not stretch, and this insert has the flattened cross-sectional shape, and the axial inwall that it is radially pasting corresponding reinforcing member main portion extends.
Specifically be that a zone of pasting in the above-mentioned interior extremity zone adds each additional annular insert, adds corresponding reinforcing member then.
Preferably adopt following method to dispose each additional annular insert, promptly on the ring-shaped bearing piece around at least one elongated member, coiled is the ceoncentrically wound coil of adjacency radially.
According to the possible construction variant of another kind, before the above-mentioned at least one reinforcing member of configuration, lay above-mentioned at least one second portion of casing ply, make a zone in this at least one said external stub area between respective inner stub area and corresponding reinforcing member.
More advantageously to implement method of the present invention be, need not be parallel to above-mentioned ring-shaped bearing piece pivot center basically, is intended to the stub area of above-mentioned at least one casing ply oppositely is folded to vertically the motion of the above-mentioned equatorial plane.
The invention still further relates to wheel tyre, this tire is characterised in that, at least one member in the above-mentioned annular reinforcement comprises: at least one reinforcing member, this reinforcing member is pasting above-mentioned at least one casing ply configuration, and has at least one main portion, the shape of cross section of this main portion is taper, stretches when above-mentioned tire axis of rotation to come to a point gradually; The annular anchoring insert that at least one does not stretch along circumference, the shape of cross section of this insert are flat configuration, and it is stretched vertically from the main portion that strengthens element.
Each annular anchoring insert preferably extends to stretching the direction of assembling from the rotation geometrical axis of tire equator face.
Annular anchoring insert and reinforcing member preferably are linked to be together rigidly, and shape is configured as the cardinal principle integrated member of " L " shape.
The shape of cross section of each annular reinforcement has geometric center of gravity, and the position at this center of gravity place makes the axial outer end edge of above-mentioned annular anchoring insert have the pivot center that tends to shift to tire when producing tension force along above-mentioned at least one casing ply because of inflation pressure of tire.
More particularly, its geometric center of gravity of the cross-sectional configuration of each annular reinforcement is positioned at a position, this position with respect to above-mentioned reinforcing member in axial outside, with respect to the axial outer end edge of above-mentioned annular anchoring insert then in axial inner.
Above-mentioned at least one casing ply preferably has first and second parts that form axial inner stub area and axial external end zone respectively.
In the preferred construction scheme, above-mentioned reinforcing member at the corresponding axial inner stub area of axial above-mentioned at least one casing ply in position and corresponding axis between outside stub area.
Perhaps alternatively, reinforcing member can be configured in the position in casing ply the inner and the two axial outside, outer end.
The annular anchoring insert preferably also is configured in the radially outer position, is pasting the end parts in above-mentioned interior extremity zone, and this end parts is stretched the equatorial plane from tire vertically.
Reinforcing member preferably includes at least one annular element with the elastomeric material work, and the hardness of this annular element is more preferably greater than 48 ° of Shore D.
Above-mentioned annular anchoring insert preferably is configured near the annular internal edge of reinforcing member main portion basically.
Above-mentioned reinforcing member in the inner radial position has the extension, and this extension is in substantially parallel relationship to above-mentioned annular anchoring insert and extends.
Preferred design becomes to have one and is parallel to the additional annular insert that above-mentioned annular anchoring insert extends.
This additional annular insert preferably is added in axial external position, is pasting the end parts of said external stub area, and stretches the equatorial plane from tire vertically.
In the preferred construction scheme, above-mentioned at least one casing ply comprises circumferential first and/or second group elongated portion, preferably dispose with alternating sequence along above-mentioned pivot center, various piece is extended along carcass element cross-section configuration, form the U-shaped shape, form the crown moieties that extend two in axial direction spaced two sides parts and the radially outer position between two side parts thus.
The axial inner stub area of above-mentioned casing ply and axially the external end zone be respectively formed on first and second groups the side part of part.
The annular anchoring insert can be configured to pasting on the end parts of said external stub area easily, and the equatorial plane from above-mentioned tire is stretched in this end.
End parts that can lay external end zone makes on its end parts that radially is stacked in the interior extremity zone.
It is also contemplated that lay at least one along the additional annular insert that circumference does not stretch, the cross-sectional configuration of this insert is radially extended, and is pasting the inner radial wall of above-mentioned reinforcing member main portion.
The invention still further relates to the tire wheel that a kind of automobile is used, comprise the mounting rim that is connected in above-mentioned automotive hub and be contained in tire on the above-mentioned wheel rim, above-mentioned tire comprises the ring shaped tyre member, this member has crown moieties, this crown moieties is connected in a pair of axially relative sidewall, this sidewall ends at bead, this bead be formed on corresponding bead seat tabling on the mounting rim, above-mentioned carcass member is equipped with at least, and one deck strengthens casing ply, this enhancement layer has stub area, this zone can combine with the respective annular reinforcement that separates each other vertically, the radially-outer surface of above-mentioned wheel rim has two side parts, this side partly is designed to form the above-mentioned bead seat that embeds the corresponding bead of above-mentioned tire, this bead seat is formed by frusto-conical face, this taper seat can be stretched from its equatorial plane by coalescence to the wheel rim pivot center, above-mentioned wheel is characterised in that, at least one above-mentioned annular reinforcement comprises that at least one reinforcing member and at least one are along the inextensible annular anchoring insert of circumference, this reinforcing member is pasting above-mentioned at least one casing ply and is having at least one main portion, the shape of cross section of this main portion is taper, stretch that this cross section comes to a point gradually when tire axis of rotation, this annular anchoring insert forms like this, promptly around last at least one continuous linear device, the coil that its coiled is coaxial, and, at least one seat in the above-mentioned bead seat itself forms a lug boss, and this lug boss is high enough to prevent the bead displacement of the corresponding bead of above-mentioned tire.
The shape of cross section of above-mentioned annular anchoring insert is a flat configuration, and the main portion from above-mentioned reinforcing member is stretched in this cross section vertically; In the above-mentioned bead seat at least one is spacing and can not axially inwardly move by the lug boss of anti-bead displacement, and the diameter of this lug boss is not less than the radially overall diameter of the axially inner ring of above-mentioned annular anchoring insert.
Above-mentioned annular anchoring insert has the cross-sectional configuration of radial concentric coil, and this cross section radially extends against the wall of the main portion of above-mentioned reinforcing member; Its value of diameter of above-mentioned anti-bead displacement lug boss is not more than the radially outer diameter of the radially inner ring of above-mentioned annular anchoring insert.
The radially-outer surface of above-mentioned tyre bead comprises middle body, and this middle body has the radially outer profile about equatorial plane symmetry, and this middle body forms central indentation, and this recess is being the boundary with above-mentioned bead seat axially, the minimum diameter D of above-mentioned recess rMinimum diameter D less than above-mentioned bead seat m
This wheel comprises the inner tube of a tyre, this inner tube of a tyre embeds in the above-mentioned annular groove, by pressure fluid in the portion chamber within it, but this inner tube of a tyre elastic expansion, this inner tube of a tyre comprises at least two annular cavities, these two inner chambers are to be separated from each other and independently, two chambeies by a vertical wall separately, this vertical wall extends in a plane perpendicular to the axis of wheel rotation line, each above-mentioned inner chamber has inflation and the means of deflation that is installed on the above-mentioned inboard wall, these devices are not attached to above-mentioned wheel rim, and above-mentioned wheel rim is designed to can be with respect to the circumferential position of the fixing above-mentioned inner chamber of this wheel rim.
Description of drawings
Describe in detail below the carcass member that makes wheels of the present invention method and with the carcass member of said method manufacturing and wheel preferably but be not unique embodiment, from these explanations, can know characteristic feature and the advantage of finding out other, this wheel comprises a kind of tire, this tire has above-mentioned carcass member, and is configured on the corresponding wheel rim.Describe below with reference to accompanying drawing, these accompanying drawings are not limited to these accompanying drawings only as an example, and these accompanying drawings are:
Fig. 1 is the perspective view of local excision, illustrate by manufacturing of the present invention and be contained in tire on the corresponding wheel rim;
Fig. 2 is a fragmentary, perspective view, lays the lay order of first group of elongated portion when being illustrated in the casing ply that forms tire of the present invention;
Fig. 3 is a fragmentary, perspective view, and annular anchoring insert and reinforcing member are shown, they be added in the casing ply interior extremity zone that forms by first group of elongated portion near;
Fig. 4 is a perspective view, and the additional annular insert is shown, and this insert radially is stacked on the end of the axial perimeter of casing ply, and second elongated portion forms this end parts in the gap by being laid between two parts of first group;
Fig. 5 is a partial section, and the tire that is in inflated condition on the corresponding wheel rim that is contained in of the present invention is shown;
Fig. 6 illustrates the tire that is subjected to the lateral thrust effect under transport condition shown in Figure 5;
Fig. 7 illustrates the tire that is subjected to a power effect under transport condition shown in Figure 5, and this power is thrust, and it is in the direction opposite the direction of power shown in Figure 6;
Fig. 8 is a partial cross section view, and the tire of a kind of modification structures of the present invention is shown, and this tire is contained on the corresponding wheel rim, is in inflated condition;
Fig. 9 is a partial cross section view, and the tire of the another kind of modification structures of the present invention is shown, and this tire is contained on the corresponding wheel rim, is in inflated condition;
Figure 10 is horizontal complete partial cross section view, and the tire of modification structures shown in Figure 8 is shown, and this tire has the inner tube of a tyre in inside, is contained on the corresponding wheel rim, is in inflated condition.
The specific embodiment
With reference to above-mentioned accompanying drawing, number the tire of 1 whole expression with the wheel of the inventive method manufacturing.Tire 1 has carcass member 2; This member 2 comprises one deck casing ply 3 at least, this casing ply is roughly annular shape, its stub area 15,16 engages with the isolated vertically reinforcement 4 (only illustrating in the accompanying drawing) of a pair of annular, and after tire made, each above-mentioned member was positioned at the zone that is commonly referred to " bead ".
Band member 5 comprises one or more belt 6a, 6b, 7, and this band member is layered on the carcass member 2 along the circumference external position.Tread ply 8 is stacked on the band member 5 along side face, has vertical and horizontal groove 8a on the above-mentioned tread ply, and this groove is formed in the tread ply, is to adopt molded maneuver to form when tyre vulcanization is handled, and this groove 8a is configured to form " tread contour " of requirement.
Tire also comprises a pair of what is called " sidewall " 9, and this sidewall is attached to the relative both sides of carcass member 2 from the side.
Carcass member 2 is lined with sealant 10 or what is called " liner " along its interior wall, and this liner is one deck elastomeric layer basically, and this elastomeric layer is airtight, is designed to tire in case inflation just can be guaranteed the gas-tight seal of tire self.
Can utilize the ring-shaped bearing piece 11 above-mentioned parts of assembling and make wherein one or more parts, this supporting member is shown in Fig. 2～4, and it is to make according to the shape of the tire inner wall that will make.Specifically be, this ring-shaped bearing piece 11 has two axial protuberances that form frustum of a cone bearing-surface 11a in the inner radial position, this bearing-surface is assembled to the pivot center of tire, stretch the equatorial plane from tire, this convergent angle is about 15 °, be preferably in 10 °～20 ° the scope, but still can adopt value outside this prescribed limit.
The contour dimension of ring-shaped bearing piece 11 is less than the contour dimension of finished product tire, the size of measuring along this circumference extension on its red logical face of supporting member for example, according to linear measurement, preferably little by 2%～5%, the equatorial plane of the equatorial plane of this supporting member and tire self overlaps.
Both do not described in detail herein and be not shown specifically ring-shaped bearing piece 11 yet, because it and purpose of the present invention have nothing to do, but this supporting member is made of the rotating cylinder or the inflatable chamber of for example shrinking, and this chamber can suitably be enhanced, so that the annular shape that forms under inflated condition and keep requiring.
As mentioned above, make tire 1 plan and at first form carcass member 2, if suitably, from forming sealant 10.
Preferably form sealant 10 like this, promptly at the circumference of ring-shaped bearing piece 11 around at least one airtight elastomeric material belt course 12, this elastomeric layer is formed by the extruder and/or the calender that are configured near the ring-shaped bearing.Can know from Fig. 1 and to see that the coiling belt course 12 like this that the i.e. continuous side-by-side each other annular ring of coiled substantially makes the transversal profile of its applying ring-shaped bearing piece 11 outer surfaces.
For the present invention, transversal profile is interpreted as the configuration by half part representative of ring-shaped bearing piece 11, should half part be that a sagittal plane of cutting by supporting member rotation geometrical axis forms, not shown this geometrical axis, it overlaps with the rotation geometrical axis of tire, thereby overlaps with the rotation geometrical axis of carcass member 2 to be made.
According to the present invention, casing ply 3 can be formed directly on ring-shaped bearing piece 11, method is as below describing in detail, to form first and second groups of elongated portions 13,14 with at least one continuous elongated member, these parts of lay then, the width of elongated portion is between 3～15mm, and these elongated members consist essentially of one or more linear devices, best 3～10 linear devices, they longitudinally with parallel mode each other side by side, embed in the elastomeric layer at least in part.
The metal cords that spin cord or the diameter that these linear devices are preferably in 0.6～1.2mm by for example diameter respectively is preferably 0.3～2.1mm constitutes.Continuous elongated member for example can directly be provided by the extruder of making this cord, and the most handy laying device guiding, the 26S Proteasome Structure and Function characteristic of laying device illustrates in greater detail the European patent application EP 0928680 in the applicant, and the content of this application is for referencial use hereinafter.
This laying device is suitable for order and cuts off continuous elongated member, to form the elongated portion 13,14 of predetermined length.
Cut off each elongated portion 13,14, and then it is laid on the ring-shaped bearing piece 11, utilize for example movable anchor clamps spare and/or suitable roll extrusion parts then, form the elongated member of U-shaped structure along the transversal profile of ring-shaped bearing piece.One when lay complete, each elongated portion 13,14 consists essentially of two side part 13a, 14a and crown moieties 13b, the 14b that radially stretches to ring-shaped bearing piece 11 axis, the former is located at the position that axially is spaced apart from each other, the latter extends in the radially outer position, between two side parts.Must be pointed out that each side part 13a, 14a are accurately along the surface of ring-shaped bearing piece 11 and go, up to the axial outer edge that is right after corresponding frustum of a cone bearing-surface.
Ring-shaped bearing piece 11 is pressed certain angle ground and is rotated, it is reached and the synchronous step motion of above-mentioned laying device operation, make after each time of cutting off each elongated portion 13,14 operated, with its be laid in front lay part 13,14 position spaced apart in the circumferential direction on.
Specifically be that the angle of rotation pitch that makes annular rotating cylinder 11 makes this displacement equal the integral multiple of each elongated portion 13,14 width preferably corresponding to a circumferential displacement, says exactly to doubling above-mentioned width.
Must be pointed out that for making things convenient for this explanation, except as otherwise noted, " circumference " speech is meant and is positioned at the circumference that equatorial plane X-X goes up close ring-shaped bearing piece outer surface.
According to the preferred embodiments of the present invention, aforesaid operations is so in proper order, promptly, make ring-shaped bearing piece 11 change the first whole circle around its axis, so just, after first group of elongated portion 13 of lay, form first's casing ply 3, this first group of elongated portion is along annular spread, and its circle spacing is the twice of each above-mentioned partial width.
The inner radial zone of this first's casing ply 3 its side part 13a comprises axial inner stub area 15, this zone be spaced from each other (a rarely seen zone in the accompanying drawing), each regional protruding end portion 17, this end parts is outwardly-bent vertically, promptly stretch from the equatorial plane, preferably be positioned at the direction that is parallel to frustum of a cone bearing-surface 11a.
Can know from Fig. 2 and to find out, between two parts of first group, preferably leave empty interval S, this interval at least on the crown moieties 13b of these parts its width equal the width of above-mentioned part.
Yet for the present invention, rotation supporting part 11 can also rotate like this, makes the circle spacing equal the width of various piece, makes its corresponding crown moieties 13b of first group part of lay adjoin each other, thereby forms the first complete casing ply.
Be preferably in each elongated portion 13 of first group of lay in the plane that is parallel to ring-shaped bearing piece 11 pivot centers.Yet lay so also if desired, being about to the elongated portion lay, to become the circumference bearing of trend with respect to ring-shaped bearing piece 11 be tilted alignment, 15 °～35 ° angles for example tilt.
For example rotate geometrical axis just can be regulated elongated portion 13,14 with respect to the orientation of above-mentioned laying device lay angle by suitable adjusting ring-shaped bearing piece 11.
The later step that forms carcass member 2 is, at least some members in the above-mentioned annular construction member that does not extend 4 or this member are added in casing ply 3 to be formed each interior extremity zone 15 near, form the carcass zone be called " bead " thus, this bead specialized designs is fixed on tire on the corresponding mounting rim in guaranteeing.
According to the present invention, the explanation according to the inventor's pending trial european patent application No.98110354.2 can form one, is preferably formed as two annular reinforcements 4.
Specifically be, in the structure technology scheme of Fig. 1～7, forming each annular construction member 4 at first is to form at least one annular anchoring insert 19 that does not stretch along circumference, this insert radially is stacked on the end parts 17 in each interior extremity zone 15, this insert is a flat pattern, generally along axially stretching from equatorial plane X-X.
Specifically be, the transversal profile of annular anchoring insert is preferably extended along a direction, and this direction is assembled to the geometrical axis of ring-shaped bearing piece, stretches from equatorial plane X-X, convergent angle is preferably 15 ° of angles, and under any circumstance corresponding to the gradient of corresponding conical butt bearing-surface 11a.
Specifically be, according to the preferred construction scheme, annular anchoring insert 19 can be formed directly on the interior extremity zone 15 of the casing ply part 3 that is formed by first group of elongated portion 13, the formation method be with at least one continuous lines linear element on ring-shaped bearing piece 11, form the concentric coiling 19a of axial adjacency.
If desired, can utilize roller or other suitable device that acts on ring-shaped bearing piece 11, make the coil 19a of looping grappling insert 19 be arranged in one or more radially overlapped layers.
Serving as a contrast the viscosity and the stable position of coiling 19a out of the ordinary when being layered on sealant 10 (if any) on the rotating cylinder in advance and will guaranteeing to be shaped of the elastic layer of first group of elongated portion 13.
Be preferably in coat with rubber step lay linear device before, during coat with rubber, linear device for the most handy metal material making, can using at least, the living elastomeric material of one deck serves as a contrast, this elastomeric material is except that the fabulous rubber-metal combination of guaranteeing linear device itself, also help the bonding of this element, so that it is fixed on the carcass member that just is being shaped securely.
Each interior extremity zone 15 against casing ply 3 firsts forms at least one enhancing element 20 then, the main portion 21 of above-mentioned enhancing element has leg-of-mutton shape of cross section substantially, this triangular-section is stretched and form taper gradually when tire axis of rotation, and this triangular-section is positioned at the axial inner position with respect to the annular anchoring insert.
Strengthen insert 20 and preferably include the annular solid of doing by elastomeric material, this elastomeric hardness is greater than 48 ° of Shore D, be preferably between 48 °～55 ° Shore D, this enhancing insert 20 is preferably formed as to directly against interior extremity zone 15, the method that forms is to add continuous elastic material rod, and this is extruded by being positioned near ring-shaped bearing piece 11 extruders.
When above-mentioned continuous bar when extruder is extruded, this should have the shape of cross section that reinforcement 20 is determined.Perhaps make the cross section of the cross section of above-mentioned continuous bar, add the above-mentioned continuous bar of some circles then, make the arranged side by side and/or stacked of these circles, so just can obtain the shape of cross section of reinforcement, thereby form the final configuration of reinforcement 20 less than reinforcement 20.
In the organization plan shown in Fig. 1～7, also to envision reinforcement 20 and have the extension 22 that is positioned at the inner radial position, this part is the extendible portion of principal part, the continuity direction is in substantially parallel relationship to annular anchoring insert 19, and radially is stacked on this insert.
According to preferred structure scheme of the present invention, after adding reinforcement 20, the elongated portion 14 of second group of lay again, this elongated portion forms by cut off above-mentioned continuous elongated member by certain size, and according to being similar to the mode that applies first group of elongated portion 13 elongated portion 14 is added on the ring-shaped bearing piece 11, so just finished the making of first casing ply 3.
Can know from Fig. 4 and to find out that second group various piece 14 is become the U-shaped shape along the transversal profile of ring-shaped bearing piece 11 by lay, be laid between two adjacent parts 13 of first group, be in the direction parallel with the latter.Specifically be, second group various piece has its crown moieties 14b and a pair of axially spaced side part 14a separately, and the former between the crown moieties 13b of first group part 13, is full of the interval that exists along circumferential arrangement therebetween.
Generally speaking, second group elongated portion forms the second portion of carcass member 3, and it has other stub area 16, and each stub area is positioned at axial external position with respect to the interior extremity zone.Specifically be, in the example of Fig. 7 to 8, each external end zone 16 is stacked on the main portion 21 of corresponding reinforcement 20 in axial external position, and extends end parts 18, this end parts is stretched from equatorial plane X-X, and radially is stacked on the extension 22 of reinforcement self.
Therefore each reinforcement 20 is vertically in the axial inner stub area 15 of casing ply 3 with axially between the external end zone 16.
Can also be designed to, the side part 14a of second group each several part can partly cover the side part 13a of two adjacent parts 13 of first group, the part of each covering is between the radially outward edge and transitional region of corresponding reinforcement 20, and this transitional region is between sidepiece branch self and crown moieties 13b, 14b.
Because the relatively mutual convergence between radial oriented sides adjacent part 13a, the 14a of the geometrical axis of ring-shaped bearing piece 11, so the overlapping part of the side part 13a of first group part 13 or circumferential width that the cover part is the overlay area will be reduced to the null value of transitional region between side part 13a, 14a and crown moieties 13b, the 14b near the maximum the radially outer edge of the reinforcement 20 of each annular reinforcement 4.
A kind of variant embodiment is specially adapted to first group part 13 laies are become the situation of the first complete casing ply 3, according to the possible variant embodiment of this kind, the part 14 that all right lay is second group, the circle spacing of lay equals its width, make it adjacent one another are, form second casing ply that is stacked on first casing ply simultaneously.In this case, second group part 14 can be with respect to tire circumference bearing of trend tilted alignment, and its incline direction preferably incline direction with first group part 13 is opposite.
According to the organization plan shown in Fig. 1～7, after second group of elongated portion 14 of lay, finish annular bead reinforcement 4.
In this occasion, as shown in Figure 4, can add the additional annular insert 23 that the upper edge circumference does not stretch to each annular reinforcement 4, this insert has the flattened cross-section shape, is in substantially parallel relationship to annular anchoring insert 19.Should can be formed directly on the radially outer position by additional annular insert 23, against the end parts 18 in external end zone 16, the method for formation is that corresponding linear device on ring-shaped bearing piece 11, is formed axially adjacent ceoncentrically wound coil 23a.
After carrying out this kind operation, the end parts 18 in each external end zone 16 preferably keeps being sealed between the extension 22 and other annular insert 23 of reinforcement 20.
In meridian formula tire, will be with member 5 to be added on the carcass member 2 usually.
This band member 5 can adopt any technical staff to feel that mode forms easily, and in an example shown, this band member 5 consists essentially of the first and second belt 6a, 6b, and these layers have the cord of corresponding crossed orientation.On the first and second belt 6a, 6b, make it form the coiling of adjacency vertically at least one continuous cord, so just stacked other belt 7 on above-mentioned belt.
Then tread ply 8 and sidewall 9 are added on the carcass member 2, this layer and sidewall can feel that any way forms easily with the technical staff.The configuration example of band member, sidewall and tread strip is illustrated in the inventor's European patent No.97830632.2, adds that this tread strip just finishes the operation of shaping tire 1 on ring-shaped bearing piece 11.
So the tire 1 that forms just can carry out vulcanizing treatment after taking off from supporting member 11 between in due course at any time, can carry out this processing with any mode easily.
Construction variant shown in Fig. 8 and said structure difference are the formation of annular reinforcement 4.In fact can be designed to, the additional annular insert 23 of each annular reinforcement 4 when existing, can make its with respect to the orientation of tire axle basically radially, and pasting the axial inwall of the main portion 21 of corresponding reinforcement 20.
Specifically be, be preferably designed as the annular insert 23 that each is additional and be formed directly into corresponding interior extremity zone 15, and then add reinforcement 20, the method that forms insert 23 is, ring-shaped bearing piece 11 around on corresponding linear device, it is formed along the stacked coiling 23a that adjoins each other of longitudinal direction.
Must be pointed out that this additional annular insert also can be used in the organization plan shown in Fig. 1～7, can also add this insert except that the additional annular insert 23 shown in these figure, perhaps can replace this insert.
After forming additional insert 23, form reinforcement, generation type is similar to the generation type of the organization plan shown in Fig. 1～7.
In variant embodiment shown in Figure 8, reinforcement 20 does not preferably have extension 22.In this case, when the elongated portion 14 of second group of lay subsequently, the end parts 18 in external end zone 16 is configured in respectively on the end parts 17 of respective inner stub area 15, forms radially stacked relation with the latter.
Add the shaping of just finishing each annular reinforcing member 4 after the annular anchoring insert 19, this insert 19 radially is stacked on the end parts 18 of respective external stub area 16, method is to utilize winding method around last corresponding linear device, makes it form the ceoncentrically wound coil 19a of axial adjacency.Compared with the above case, in variant embodiment shown in Figure 9, reinforcing member 20 is designed to be positioned at axial external position with respect to whole casing ply 3.For this reason, when needed, before adding reinforcing member 20 and additional annular insert 23, add second group of bar shaped part 14, so that form second portion casing ply 3.Like this, each external end zone 16 is just between respective inner stub area 15 and reinforcement 20.
All the other members and configuration aspects for organization plan shown in Figure 9 can be fully with reference to the explanations to Fig. 8 did.
In above-mentioned each organization plan, the interaction between the remaining part of annular anchoring insert 19, reinforcement 20 and carcass member 2 makes reinforcement and annular anchoring insert reach basically to each other and is rigidly connected.
In other words, annular anchoring insert 19 and enhancing element 20 see that from function view the mode with integrated member works, this integrated member is roughly L shaped, have radial arm and axial arm, the former is made of the main portion 21 of reinforcement 20, the latter is made of annular anchoring insert 19, and this insert 19 is stretched vertically from equatorial plane X-X.
Fig. 5 and 9 illustrates the functional character of tire 1 with schematic form.Be contained on the corresponding wheel rim 30 at tire 1 shown in this figure, this wheel rim 30 has the seat 31 that embeds bead respectively at two relative axial positions.Each embeds seat 31 and has the so-called bead seat 31a that is formed by frusto-conical face, and this bead seat is assembled to the tire axle away from equatorial plane X-X, is parallel to the extension of corresponding grappling insert 19.This bead seat 31a is limited between axial outside annular relief 31b and the axial inner annular relief 31c vertically, also is called " lug boss of anti-bead displacement " below these lug bosses.
Shown in above-mentioned accompanying drawing, the geometric center of gravity of the cross-sectional profiles of annular reinforcement 4 is positioned at axial external position with respect to reinforcement 20, then is positioned at the axial inner position with respect to the axial external end edge of annular anchoring insert 19.
The blowing pressure of tire makes casing ply produce tension along the linear device in first and second groups the part.
In Fig. 5, for the tire of inflated condition, near the power T that acts on the radially inward edge of reinforcement 20 will make first group part 13 tensionings.The value of the radius of curvature R that the transverse side shape of dividing its value of tangent power T to be proportional near the casing ply 3 the blowing pressure value and tire 9 sidewalls at the longitudinal extension part with appropriate section 13 on the above-mentioned point of application has, and this power produces the moment M to center of gravity G, and this moment presses against near the part axial external margin of grappling insert 19 on the bead seat 31a of corresponding wheel rim 30.Like this, bead is pressed in power P on the bead seat 31a of wheel rim 30 and just can guarantees air in the complete gas-tight seal tire.
Fig. 6 is illustrated under the driving conditions in load and the tire when being subjected to lateral thrust.Specifically be the characteristic in the tire beads zone of its inside part when Fig. 6 illustrates vehicle and turns round.
As noticing, because the effect of lateral thrust F, the carcass member is compressed, and shifts to the inboard lateral displacement of turning round with respect to equatorial plane X-X.
So near the radius of curvature value of being reduced to R ' of the casing ply sidewall, this value R ' is less than the radius R of measuring under Fig. 5 condition.Simultaneously, the bead 4 of tire, particularly near the bead 4 reinforcement 20 main portion 21 bends, this bending tends to increase the tension force in the axial inner zone 15 of casing ply 3, the increase of this tension force has further increased moment M again, thereby has increased because of the axial perimeter of bead is pressed against bead seat 31a and go up the thrust P ' produce.
Fig. 7 is illustrated in the tire that is subjected to lateral thrust under the driving conditions, and the bead in its outside when being positioned at vehicle and turning round is shown especially.In this case, compression that causes on casing ply 3 and lateral displacement effect make this casing ply form crooked extension in the zone of sidewall 9, and the radius of curvature R of this part is " greater than the radius R that obtains under condition shown in Figure 5.
Thereby in interior extremity zone 15 and the tension force of the casing ply 3 in 16 two zones, external end zone increase, and the main portion 21 of reinforcement 20 is tended to the bending to equatorial plane X-X.In this state, tire beads trends towards applying the axial thrust R of the belt lug boss 31c of directed outwards " because bead seat 31b and annular anchoring insert 19 are tapers, thereby increased the contact pressure on this bead seat 31b.
Figure 10 illustrates tire of the present invention and is contained in partial cross section figure on the wheel rim, this wheel rim has the bead seat that is formed by frusto-conical face, this frustum of a cone is assembled towards the tire axis of rotation away from its equatorial plane, and its convergent angle β is preferably between 5 °～25 °, preferably gets 20 °.
Being equipped with in the bead of tire can not be along the annular reinforcement of circumferential extension, and these members are selected from a kind of member in the above-mentioned member, are specially member shown in Figure 8.
Wheel rim preferably has the radially outer profile of symmetry, and this wheel rim comprises the central recess of broad, and this recess is being the boundary with above-mentioned bead seat axially, the minimum diameter D of this bead seat mMinimum diameter D greater than above-mentioned recess r
On the zone of each bead seat, wheel rim has the lug boss 31c in the axial inner position, and this lug boss is designed to prevent that the corresponding bead of tire from crossing this lug boss during travelling, and drops in the central indentation.
Be contained in for example above-mentioned U.S. Patent No. 5634993 described tires of known tire on the wheel rim with bead seat as mentioned above and have the bead that the conventional bead core with existing technology strengthens, this bead core metal-coredly is made of single, be called " unitary bead silk " below, it is different with " multi-turn " bead wire that bead reinforcement of the present invention is used.
When having realized that with these tires, above-mentioned lug boss must have bigger radially extension, crosses this lug boss so that prevent bead when bleeding a tire, in order to avoid cause known serious consequence aspect road holding.In other words, the diameter of lug boss must be substantially equal to the maximum gauge of unitary bead silk at least.For this reason, known tyre bead has such central indentation, this recess has recessed greatly with respect near the diameter of the bead seat of position measurement lug boss: like this, when being contained in tire on the wheel rim, the bead of tire just may be contained on the very eccentric position with respect to wheel rim, thereby may divide some steps in succession radially outwards to cross lug boss from the lining, at first, cross lug boss along the relative circle center's line of diameter then along circle center's line of lug boss.
Adopt the tire of above-mentioned United States Patent (USP) shown type and since tire beads radially more interior diameter equal D m, and than the maximum dimension D of bead seat cBe that tire installation diameter is little a lot, so the problem especially severe.Therefore above-mentioned concave depth must be done greatlyyer, so just produces wheel is contained in problem on the automotive hub.
Above-mentioned patent adopts the wheel rim head it off with different accessories, promptly increases the diameter of the bead seat of automobile side, so that can increase the minimum diameter of the recess of axial adjacent part.This measure can solve wheel is contained in problem on the automobile, but causing a series of problems aspect the directional stability of tire, because corresponding tire is the tire with asymmetric member, be that its bead has different assembling diameters, therefore the stress that acts on it reacted in incomparable inconsistent mode.
Tire of the present invention is with very effective mode head it off.
At first it should be noted that, the a pair of bead core that is made of the coiling of some circle metal cords forms the bead member respectively, this member is than the known easier bending of unitary bead silk, therefore easier generation deformation when bleeding a tire, thereby can form special special elliptical shape, the lug boss that this elliptical shape makes bead cross wheel rim when being contained in tire on the wheel rim is essential, and conversely, it is taken off from wheel rim also is essential.
Yet also it should be noted that, shown in the specific embodiment, these coilings use that is fitted to each other, specifically be, one group of coiling is configured in the plane of cardinal principle perpendicular to tire axis of rotation, and another group coiling is promptly used separately yet these coilings also can be separated from each other to use along the frusto-conical face configuration that is in substantially parallel relationship to bead seat; Therefore this member works in the mode of the L shaped reinforcement of aforesaid rigidity basically.
Thereby this reinforcement more can bear inside vertically power when tire is contained on the wheel rim, and this power can make bead slip over lug boss at bead under with the situation of unitary bead core.
In these known tires, when the bead core will be crossed lug boss, can prevent the bead displacement without any bead structure parts.And in tire of the present invention, on above-mentioned each winding, the be shifted increase of necessary diameter of bead takes place will cause the increasing increase of above-mentioned winding center line loop diameter, particularly in winding radially, will cause from radially interior coil to the radially increasing stretching of the coil of outermost position.Because the mechanical strength property of used cable wire is so can prevent this stretching effectively.
In addition, under the situation of taper winding, bead displacement requires the diameter of cable wire coil to increase gradually, promptly requires the stretching winding coil, the coil from the coil of axial innermost position to axial outermost position, and its stretching is increasing.Because used cable wire has basically not elongation characteristics, so can prevent this diameter to increase effectively.
As conclusion, can also not want lug boss, bead seat itself just forms lug boss, and it can prevent the bead displacement effectively, and under any circumstance, the height of lug boss can remain in the scope of very little value, and the degree of depth of groove also has smaller value.
Can find out obviously now, also can deal with problems that this winding is preferably along the frusto-conical face configuration that is parallel to the bead seat plane with a single wire coil winding.
Specifically be preferably to keep the diameter D of lug boss 31c h, make its value be not less than the radially outer size of taper axis of winding penetralia coil.Match with it, perhaps substitute, preferably make the diameter D of lug boss 31c as a kind of hRemain on and be not more than the radially value of the radially outer diameter of the radially penetralia coil of winding.
With reference to Figure 10, this illustrates model 215/630/420 tire, and it is 424.2mm that diameter wherein is installed, and the height h of protuberance equals 3.5mm, and this highly under any circumstance is not more than 4mm, is preferably between 3～4mm the degree of depth h of central indentation cBe 17.5mm, be preferably between 15～25mm.
In the preferred embodiments of the present invention shown in Figure 10, the wheel that above-mentioned tire and wheel rim is fitted together formation also comprises a kind of device, and this device is designed to make wheel also to have self-supporting ability under part venting condition.Said apparatus preferably is made of the inner tube of a tyre 100, and this inner tube of a tyre has inner chamber separately, the preferably inner tube of a tyre described in the invention described above people's the patent application EP 0922592.
But the above-mentioned inner tube of a tyre is by introducing pressure fluid and elastic expansion to its inner chamber, this inner tube of a tyre is oval, be particularly suitable for the dwarf forms tire, comprise two independently inner chambers that separate, this inner chamber can separately be inflated each other, two inner chambers are separated to wall 105 by central longitudinal, and this vertical wall has very big rigidity, is positioned at a plane perpendicular to the wheel turns axis.
The most handy valve control of the inflation in above-mentioned chamber is not fixedly connected on mounting rim, and this valve is in the inventor's patent application No.EP0937590 explanation.Three kinds of operations that each valve in these valves 110 is preferably carried out inflation apart from each other, exitted and proofread and correct the blowing pressure right value fast.
The present invention has significant advantage.
Specifically be, because therefore the structural design of annular reinforcement 4 of the present invention can obtain a kind of tire, this tire is suitable for being contained on the taper wheel rim outwardly of bead seat, and this design does not cause any big difficulty to the manufacturing process of tire.
As result of the present invention, in fact can utilize the tension force that on casing ply, produces, make to be pressed in contact pressure on the wheel rim bead seat all can increasing bead under any operating condition, do not need to dispose the annular reinforcement of the complexity of prior art design for this purpose.
Particularly, because the present invention has simplified annular reinforcement, so can be assembled on the rigid drum with the parts of fully automatic mode with whole tire, this rotating cylinder has the interior shape of tire self.
In fact, according to above-mentioned explanation, tire is preferably made like this, promptly utilize motion and the relatively tangential motion of supporting member circumference extension substantially vertical orientated with respect to the supporting member pivot center, with the component parts of tire particularly the bead reinforcement be added on the contractile rigid annular shaped supporting member.Specifically be, the invention provides a kind of method that can transfer unit, this method does not adopt the motion that is parallel to above-mentioned pivot center substantially, perhaps under any circumstance can be not vertically the inside stub area of folding one or more casing plies.
Particularly, as result of the present invention, can make a kind of tire that is suitable for being contained on the above-mentioned wheel rim, the present invention has adopted the above-mentioned pending trial european patent application of formation No.EP 0928680, the EP 0928702 of inventor's proposition and the new structural principle of EP 0976535 theme, thereby has adopted their all favourable aspects with respect to known fabrication processes.
Must be pointed out, owing to adopt the structural design and the particularly design of carcass member 2 of member designs of above-mentioned tire, so aspect structural strength and the service behaviour aspect be significantly improved, especially the intensity at the bead near zone is improved aspect structural strength, this zone usually requires bigger structural strength, and the lateral thrust that takes place when especially vehicle being turned round aspect service behaviour makes it produce better effect.
Tire of the present invention in this respect also provides additional advantage, this advantage mainly originates from the alternative traditional unitary bead core of new multi-thread circle bead core, this advantage is, can use the mounting rim of the above-mentioned type, this wheel rim has symmetrical bead seat and promptly has identical installation diameter, the central indentation that also has degree of depth minimum does not simultaneously preferably have the anti-bead displacement lug boss of axial inner or has highly minimum lug boss.Especially, the architectural feature of annular reinforcement and the method that they are attached to casing ply made further increased structural strength in bead and tyre sidewall zone.
In fact, the go in ring existence of the annular insert 19,23 that can not extend of the edge that is connected in casing ply 3 at last makes it and on the same group the linear device of elongated portion 13,14 not form fabulous " constraint ".Therefore strengthened the intensity of carcass member 2 in the bead zone of tire 1, and do not need to use the elongated insert of other so-called " infantees (flippers) " for this reason, this infantees returns on belt reinforcement 4, yet they but are used in the prior art.
Owing to remove the inflection in ply ends zone and remove the thing followed and motion that ring-shaped bearing piece is coaxial and carry out the device of corresponding processing step, so that the manufacturing process of tire more simplify, quicker and more economical, make also and can from structural tire part, remove discontinuous parts that these parts are in the tire of sulfuration and caused very big problem during operation.

Claims (48)

1. method of making automoblie tyre may further comprise the steps:
Make carcass member (2), this carcass member has one deck casing ply (3) at least, and the stub area of this casing ply engages with the respective annular reinforcement (4) that separates vertically each other:
To be added in the circumference external position of carcass member (2) with member (5);
Tread ply (8) is added on the circumference external position of band member (5) and at carcass member (2) relatively at least one pair of sidewalls (9) of both sides;
It is characterized in that, make carcass member (2) and may further comprise the steps:
At least one first of above-mentioned at least one casing ply (3) is added on the ring-shaped bearing piece (22), make it circumferentially, the shape of the inner surface extension of the shape of this supporting member and above-mentioned tire is complementary, this first forms the axial inner stub area (15) of above-mentioned at least one casing ply (3), this stub area is spaced from each other, from each stub area protruding end portion (17), this end parts is stretched the equatorial plane (X-X) from tire;
Add at least one annular anchoring insert (19) along the circumference inextensibility, this insert radially is stacked at least one regional end parts (17) in the above-mentioned axial inner stub area (15), the shape of cross section of this insert (19) is a flat configuration, and this cross section is stretched the equatorial plane from respective inner stub area (15) and tire vertically;
Add at least one reinforcing member (20), make it paste at least one zone in the above-mentioned interior extremity zone (15), this reinforcing member (20) has at least one main portion (21), its shape of cross section is taper, come to a point gradually along this taper of direction of leaving above-mentioned pivot center, this main portion is positioned at the axial inner position substantially with respect to above-mentioned annular anchoring spare (19).
2. the method for claim 1, it is characterized in that, also comprise following step: at least one second portion that on ring-shaped bearing piece (22), adds above-mentioned at least one casing ply (3), make it circumferentially, this second portion forms the axial external end zone (16) of above-mentioned at least one casing ply (3), is positioned at axial external position with respect to this second portion of above-mentioned interior extremity zone (15).
3. method as claimed in claim 2, it is characterized in that, adding that above-mentioned at least one reinforcing member (20) adds above-mentioned at least one second portion of casing ply (3) afterwards, making at least one overlay area in the said external stub area (16) on a side relative of reinforcing member (20) with above-mentioned interior extremity zone (15).
4. the method for claim 1 is characterized in that, adds that the method for above-mentioned annular anchoring insert (19) is, on ring-shaped bearing piece (11), coiled is the ceoncentrically wound coil (19a) of configuration arranged side by side axially with at least one linear device.
5. method as claimed in claim 2, it is characterized in that, at least one regional end parts (18) in the said external stub area (16) is configured to pasting the extension (22) of corresponding reinforcing member (20), and this extension is in substantially parallel relationship to above-mentioned annular insert (19) and extends.
6. method as claimed in claim 2, it is characterized in that, further comprising the steps of: as to add at least one additional annular insert (23) that does not stretch along circumference, this insert radially is stacked in the said external stub area (16) at least one regional end parts (18), and this additional insert is arranged essentially parallel to above-mentioned annular anchoring insert (19) and extends.
7. method as claimed in claim 6 is characterized in that, adds that the method for above-mentioned additional annular insert (23) is, with at least one linear device on ring-shaped bearing piece (11), coiled vertically side by side the configuration ceoncentrically wound coil (23a).
8. the method for claim 1, it is characterized in that, the method that adds above-mentioned at least one first of above-mentioned at least one casing ply (3) is, at least one elongated portion of first group (13) of lay, this elongated portion is circumferentially on ring-shaped bearing piece (11), each above-mentioned part (13) becomes the U font to extend around the transversal profile of ring-shaped bearing piece (11), thus the crown moieties (13b) that extend two sides parts (13a) with above-mentioned interior extremity zone (15) that formation separates each other vertically and the radially outer position between side part (13a).
9. method as claimed in claim 2, it is characterized in that, the method that adds above-mentioned at least one second portion of above-mentioned at least one casing ply (3) is, at least one second group of elongated portion (14) of lay, this elongated portion is circumferentially on ring-shaped bearing piece (11), each above-mentioned elongated portion (14) becomes the U font to extend around the transversal profile of ring-shaped bearing piece (11), thereby forms axially spaced apart from each other and have two sides parts (14a) of said external stub area (16) and the crown moieties (14b) that extend the radially outer position between side part (14a).
10. method as claimed in claim 8 or 9, it is characterized in that, the circular pitch of its lay of first group part (13) is greater than its width, the crown moieties (14b) of second group part (14) is laid in respectively in the gap that exists between first group two adjacent parts (13), thereby forms in conjunction with above-mentioned part above-mentioned at least one casing ply (3) together.
11. the method for claim 1 is characterized in that, adds reinforcing member (20), and then adds annular anchoring insert (19).
12. method as claimed in claim 2 is characterized in that, adds above-mentioned at least one second portion of casing ply (3), and then adds above-mentioned at least one annular anchoring insert (19).
13. method as claimed in claim 12 is characterized in that, above-mentioned at least one grappling insert (19) radially is stacked on the end parts (18) of respective external stub area (16).
14. method as claimed in claim 12, it is characterized in that, during the second portion that adds above-mentioned at least one casing ply (3), an end parts (18) in each external end zone (16) is configured to pasting the end (17) of respective inner stub area (15), and this end parts (17) is stretched vertically from the equatorial plane (X-X).
15. the method for claim 1, it is characterized in that, further comprising the steps of: as to add that at least one is additional along the inextensible annular insert of circumference (23), this insert has the flat shape of cross section that radially extends, and is attached on the axial inwall of main portion (21) of above-mentioned at least one reinforcing member (20).
16. method as claimed in claim 15 is characterized in that, adds each additional annular insert (23), makes its zone in the above-mentioned interior extremity zone (15), and then adds corresponding reinforcing member (20).
17. method as claimed in claim 15 is characterized in that, adds that the method for each annular insert (23) is, with at least one linear device on ring-shaped bearing piece (11), coiled radially side by side the configuration ceoncentrically wound coil (23a).
18. method as claimed in claim 2, it is characterized in that, adding that above-mentioned at least one reinforcing member (20) adds above-mentioned at least one second portion of casing ply (3) before, making at least one zone in the said external stub area (16) be positioned at the centre of respective inner stub area (15) and corresponding reinforcing member (20).
19. the method for claim 1 is characterized in that, the manufacturing of carcass member (2) may further comprise the steps:
Many elongated portions (13) that are suitable for forming at least one first of above-mentioned at least one casing ply (3) of order lay along the circumferential direction on ring-shaped bearing parts (11), the shape of the inner surface extension of the shape of this support unit and above-mentioned tire is complementary, and this first forms the axial inner stub area (15) of above-mentioned at least one casing ply (3);
Along at least one annular anchoring insert (19) that does not along the circumferential direction stretch of circumferencial direction coiling with respect to above-mentioned ring-shaped bearing piece (11), this insert radially is stacked in the above-mentioned axial inner stub area (15) on each regional end parts (17), the shape of cross section that this insert (19) has flat configuration, it stretches the equatorial plane (X-X) from respective inner stub area (15) and tire vertically;
Along at least one reinforcing member of circumferencial direction lay (20) with respect to above-mentioned ring-shaped bearing piece (11), against each interior extremity zone (15), this reinforcing member (20) has at least one main portion (21), this main portion has stretches the taper that comes to a point gradually when above-mentioned pivot center, this main portion is configured in the axial inner position with respect to above-mentioned annular anchoring insert (19);
Along the circumferential direction order is placed many elongated portions (14) on above-mentioned ring-shaped bearing piece (11), this elongated portion is suitable for forming at least one second portion of above-mentioned at least one casing ply (3), this second portion forms the axial external end zone (16) of above-mentioned at least one casing ply (3), and each stub area is stacked in facing toward on the opposite flank in above-mentioned interior extremity zone (15) of reinforcing member (20).
20. the method for claim 1 is characterized in that, there is not the motion that is parallel to above-mentioned ring-shaped bearing piece (11) pivot center basically in the enforcement of the method.
21. an automoblie tyre comprises:
Carcass member (2) has at least one casing ply (3), and this casing ply has the stub area (15,16) that combines with respective annular reinforcement (4) that is spaced apart from each other vertically;
Be with member (5), be added in the circumference external position of carcass member (2);
Tread ply (8) is added in the circumference external position of being with member (5);
At least one pair of sidewall (9) is added in two sidepiece relative positions of carcass member (2);
It is characterized in that at least one in the above-mentioned annular reinforcement (4) comprises:
At least one reinforcing member (20) is attached on above-mentioned at least one casing ply (3), has at least one main portion (21), and the shape of cross section of this main portion is stretched when the pivot center of tire and come to a point gradually;
At least one is along the annular anchoring insert (19) that circumference does not stretch, and its shape of cross section is a flat structure, stretches the main portion (21) from reinforcing member (20) vertically.
22. tire as claimed in claim 21 is characterized in that, each its bearing of trend of annular insert (19) is assembled to the tire geometrical rotation axis away from tire equator face (X-X).
23. tire as claimed in claim 21 is characterized in that, above-mentioned annular anchoring insert (19) and above-mentioned reinforcing member (20) are rigidly connected to each other basically.
24. tire as claimed in claim 21, it is characterized in that, the cross-sectional configuration of each annular reinforcement (4) has the geometric center of gravity (G) that is positioned at such position, make under the effect of inflation pressure of tire, produce tension force along above-mentioned at least one casing ply (3), along with this kind tension force, the axial outer end edge of above-mentioned annular anchoring insert (19) will be pushed to the pivot center of above-mentioned tire.
25. tire as claimed in claim 21, it is characterized in that, the cross-sectional configuration of above-mentioned annular reinforcement (4) has a center of gravity G, and this center of gravity is positioned at the axial inner position with respect to the axial external position of above-mentioned reinforcing member (20) and with respect to above-mentioned annular anchoring insert (19) axial outer end edge.
26. tire as claimed in claim 21 is characterized in that, above-mentioned at least one casing ply has circumferential first and second parts that form axial inner stub area (15) and axial external end zone (16) respectively.
27. tire as claimed in claim 26 is characterized in that, above-mentioned reinforcing member (20) axial arrangement at the corresponding axial inner stub area (15) of above-mentioned at least one casing ply (3) and corresponding axis between outside stub area (16).
28. tire as claimed in claim 26 is characterized in that, above-mentioned annular anchoring spare (19) leans against on the end parts (17) in above-mentioned interior extremity zone (15), and this end parts (17) is stretched the equatorial plane (X-X) from tire vertically.
29. tire as claimed in claim 28 is characterized in that, above-mentioned annular anchoring insert (19) is added in the radially outer position with respect to the above-mentioned end parts in interior extremity zone (15) (17).
30. tire as claimed in claim 21 is characterized in that, above-mentioned reinforcing member (20) comprises at least one elastomeric material annular element.
31. tire as claimed in claim 30 is characterized in that, the hardness of above-mentioned annular element is greater than 48 ° of Shore D.
32. tire as claimed in claim 21 is characterized in that, above-mentioned annular anchoring spare (19) is the inner circumferential edge of close reinforcing member (20) main portion (21) basically.
33. tire as claimed in claim 21 is characterized in that, above-mentioned reinforcing member (20) has the extension (22) in the inner radial position, and this part is arranged essentially parallel to above-mentioned annular anchoring insert (19) and extends.
34. tire as claimed in claim 21 is characterized in that, also comprises at least one additional annular insert (23), this insert is parallel to above-mentioned annular anchoring insert (19).
35., it is characterized in that above-mentioned additional annular insert (23) is attached on the end parts (18) of said external stub area (16) as claim 26 or 34 described tires, this end parts is stretched the equatorial plane (X-X) from tire vertically.
36. tire as claimed in claim 35 is characterized in that, above-mentioned additional annular inserts (23) is added in the radially outer position with respect to the above-mentioned end parts in external end zone (16) (18).
37. tire as claimed in claim 21, it is characterized in that, above-mentioned at least one casing ply (3) comprises first group of at least one elongated portion (13), this elongated portion around above-mentioned pivot center circumferentially, each elongated portion extends with the U-shaped shape along the cross-sectional configuration of carcass member (2), thus the crown moieties (13b) that forms spaced vertically two sides parts (13a) and on the radially outer position between the side part (13a), extend;
38. tire as claimed in claim 37, it is characterized in that, above-mentioned at least one casing ply (3) also comprises second group of at least one elongated portion (14), this part around above-mentioned pivot center circumferentially, distribute with alternating sequence with respect to the part (13) that belongs to first group, each elongated portion extends with the U-shaped shape along the cross-sectional configuration of carcass member (2), thereby the crown moieties (14b) that forms spaced vertically two sides parts (14a) and extend on the radially outer position between this side part (14a) is in the part (13 that belongs to first and second groups, 14) side part (13a, form the axial inner stub area (15) and the axial external end zone (16) of above-mentioned casing ply (3) 14a) respectively.
39. tire as claimed in claim 26 is characterized in that, above-mentioned annular anchoring insert (19) is against the end parts (18) in above-mentioned interior extremity zone (15), and this end parts is axially stretched the equatorial plane (X-X) from tire.
40. tire as claimed in claim 39 is characterized in that, above-mentioned annular anchoring insert (19) is added on the radially outer position with respect to the above-mentioned end parts in external end zone (16) (18).
41. tire as claimed in claim 40 is characterized in that, the end parts (18) of external end zone (16) radially is stacked on the end parts (17) of interior extremity zone (15).
42. tire as claimed in claim 21 is characterized in that, comprises that also at least one is additional along the inextensible annular insert of circumference (23), its cross-sectional structure radially extends against the axial inwall of above-mentioned reinforcing member (20) main portion (21).
43. tire as claimed in claim 21 is characterized in that, above-mentioned reinforcing member (20) is configured in the axial external position with respect to above-mentioned at least one casing ply (3).
44. the tire wheel that automobile is used comprises the mounting rim that is connected in above-mentioned automotive hub and is contained in tire on the above-mentioned wheel rim,
Above-mentioned tire comprises ring shaped tyre member (2), this member has crown moieties, this crown moieties is connected in a pair of axially relative sidewall, this sidewall ends at bead, this bead be formed on corresponding bead seat tabling on the mounting rim, above-mentioned carcass member is equipped with at least that one deck strengthens casing ply (3), this enhancement layer has stub area (15,16), this zone can combine with the respective annular reinforcement (4) that separates each other vertically
The radially-outer surface of above-mentioned wheel rim has two side parts, and this side partly is designed to form the above-mentioned bead seat that embeds the corresponding bead of above-mentioned tire, and this bead seat is formed by frusto-conical face, and this taper seat can be stretched from its equatorial plane by coalescence to the wheel rim pivot center,
Above-mentioned wheel is characterised in that, at least one above-mentioned annular reinforcement (4) comprises that at least one reinforcing member (20) and at least one are along the inextensible annular anchoring insert (19 of circumference, 23), this reinforcing member is pasting above-mentioned at least one casing ply (3) and is having at least one main portion (21), the shape of cross section of this main portion is taper, stretch that this cross section comes to a point gradually when tire axis of rotation, this annular anchoring insert (19,23) form like this, promptly around last at least one continuous linear device, the coil that its coiled is coaxial
And at least one seat in the above-mentioned bead seat itself forms a lug boss, and this lug boss is high enough to prevent the bead displacement of the corresponding bead of above-mentioned tire.
45. tire wheel as claimed in claim 44 is characterized in that, the shape of cross section of above-mentioned annular anchoring insert (19) is a flat configuration, and stretch vertically from the main portion of above-mentioned reinforcing member (20) (21) in this cross section; In the above-mentioned bead seat at least one is spacing and can not axially inwardly move by the lug boss of anti-bead displacement, and the diameter of this lug boss is not less than the radially overall diameter of the axially inner ring of above-mentioned annular anchoring insert (19).
46., it is characterized in that above-mentioned annular anchoring insert (23) has the cross-sectional configuration of radial concentric coil (23a) as claim 44 or 45 described tire wheels, this cross section radially extends against the wall of the main portion (21) of above-mentioned reinforcing member (20); Its value of diameter of above-mentioned anti-bead displacement lug boss is not more than the radially outer diameter of the radially inner ring of above-mentioned annular anchoring insert (23).
47. tire wheel as claimed in claim 44, it is characterized in that, the radially-outer surface of above-mentioned tyre bead comprises middle body, this middle body has the radially outer profile about equatorial plane symmetry, this middle body forms central indentation, this recess is being the boundary with above-mentioned bead seat axially, the minimum diameter D of above-mentioned recess rMinimum diameter D less than above-mentioned bead seat m
48. tire wheel as claimed in claim 44, it is characterized in that, it comprises the inner tube of a tyre, this inner tube of a tyre embeds in the above-mentioned annular groove, by pressure fluid in the portion chamber within it, but this inner tube of a tyre elastic expansion, this inner tube of a tyre comprises at least two annular cavities, these two inner chambers are to be separated from each other and independently, two chambeies are separated by a vertical wall, and this vertical wall extends in a plane perpendicular to the axis of wheel rotation line, and each above-mentioned inner chamber has inflation and the means of deflation that is installed on the above-mentioned inboard wall, these devices are not attached to above-mentioned wheel rim, and above-mentioned wheel rim is designed to can be with respect to the circumferential position of the fixing above-mentioned inner chamber of this wheel rim.
CN 99808574 1998-06-05 1999-05-27 Method for mfg. tyre for vehicle wheels, tyre which can be obtained by said method, and vehicle wheel comprising said tyre Expired - Fee Related CN1250388C (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
EP98110354A EP0922592B1 (en) 1997-11-14 1998-06-05 Tyre wheel and its components
EP98110354.2 1998-06-05
EP99830021.4 1999-01-22
EP99830021 1999-01-22
EP99830063.6 1999-02-05
EP99830063 1999-02-05
EP99103044 1999-02-16
EP99103044.6 1999-02-16

Publications (2)

Publication Number Publication Date
CN1309601A CN1309601A (en) 2001-08-22
CN1250388C true CN1250388C (en) 2006-04-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 99808574 Expired - Fee Related CN1250388C (en) 1998-06-05 1999-05-27 Method for mfg. tyre for vehicle wheels, tyre which can be obtained by said method, and vehicle wheel comprising said tyre

Country Status (5)

Country Link
CN (1) CN1250388C (en)
BR (1) BR9910959B1 (en)
RU (1) RU2222431C2 (en)
TR (1) TR200100302T2 (en)
TW (1) TW440525B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4150216B2 (en) * 2002-06-14 2008-09-17 株式会社ブリヂストン Tire manufacturing method and green tire manufacturing apparatus
JP2006504574A (en) * 2002-11-04 2006-02-09 ソシエテ ド テクノロジー ミシュラン Extended mobility tire with separate fixed zone
JP5629765B2 (en) * 2009-06-09 2014-11-26 ピレリ・タイヤ・ソチエタ・ペル・アツィオーニ Method for controlling the release of fluid during the process of vulcanizing and molding raw tires and tires for vehicle wheels
WO2011077236A1 (en) 2009-12-22 2011-06-30 Pirelli Tyre S.P.A. Process and plant for building green tyres for vehicle wheels
MX2017010973A (en) 2015-03-31 2017-10-18 Pirelli Process and expandable forming drum for building tyres for vehicle wheels.
FR3105081B1 (en) * 2019-12-20 2021-11-19 Michelin & Cie AUTOMATIC MANUFACTURING MACHINE FOR PNEUMATIC BANDAGES WITH A "POLARIZED" SUMMIT

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BR9910959A (en) 2001-03-13
TR200100302T2 (en) 2001-06-21
BR9910959B1 (en) 2008-11-18
CN1309601A (en) 2001-08-22
TW440525B (en) 2001-06-16
RU2222431C2 (en) 2004-01-27

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