• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1477210 Pneumatic tyres MICHELIN & CIE (COMPAGNIE GENERALE DES ETABS MICHELIN) 11 June 1974 [12 June 1973] 25912/74 Heading B7C A pneumatic tyre comprises at least one parallel cord carcass ply, the cords of which form an angle of 70 to 90 degrees with the circumferential direction in the sidewalls and in the crown a smaller angle with the circumferential direction, and three superposed oblique parallel cord breaker plies making respective angles with the circumferential direction, wherein the direction of the cords of the breaker ply next adjacent the carcass differs by at most approximately 30 degrees from the perpendicular to one diagonal of a parallelogram with sides parallel to the cords of the other two breaker plies, the other diagonal being parallel to the circumferential direction. As illustrated in Fig. 3, angles α, #, γ are + 23, - 16, and + 31 degrees respectively. The embodiment of Figs. 4 and 5 comprises a rayon cord carcass ply 1, and a breaker consisting of a rayon cord ply 53, a polyvinyl alcohol cord ply 4, and a steel cord ply 5. Initially the plies are wound in a cylindrical drum with cord angles #=80 degrees (the carcass ply has same cord angle over its whole width prior to shaping), α= +38, #= -31, γ= + 73 degrees. After shaping (with the tyre diameter being 1À5 times the diameter of the cylindrical blank) the cord angles were #= -55¢, α= +23, # = - 16, and γ= +31 degrees. Rubber strips 55 are positioned beneath folded edges 54.
    公开号:SU1036240A3
    申请号:SU742039827
    申请日:1974-06-11
    公开日:1983-08-15
    发明作者:Буало Жак
    申请人:Мишлен Э Ко (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the design of pneumatic tires, in particular to the design of radial tires, with a three-layer belt.
    A pneumatic tire tire comprising a carcass reinforcement located continuously from one side ring to the other and including at least one wire or cord layer, and a braker reinforcement; a three-layer cord or wire layers, the threads of which are they are located obliquely to the circumferential direction under the angles df 1 f ff, respectively, while the angles fb and -y are enclosed in the range of 15-30 ° ij.
    The disadvantage of this tire design is the certain complexity of its assembly
    The purpose of the invention is to improve the manufacturability of the assembly.
    This goal is achieved by having a pneumatic tire containing a frame reinforcement located continuously from the center side ring to the other and including at least one wire or cord layer, and a breaker reinforcement composed of three cords stacked on top of each other. or wire layers, the threads of which are inclined to the circumferential direction at angles ot, / i, J, respectively, while the angles / J and j are enclosed in the range of 15-35 °, the thread of the carcass reinforcement is located relative to the circumferential direction on the sides The tires at an angle of 70-90a under the breaker reinforcement are angularly smaller than on the sidewalls, the angle oi of the strands of the breaker layer adjacent to the carcass layer being determined by the angle formed by the intersection of the straight line drawn through the intersection point of the diagonals the parallel is ma and perpendicular to one of the diagonals, and the other is diagonal parallel to the circumferential direction, and the sides of the parallelogram are respectively parallel to the threads of the breaker layers located at angles and y to the circumferential direction
    In addition, the reinforcement of the breaker has reinforced edges.
    The density of the threads of the belt layer attached to the carcass layer is less than the density of the threads of the other layers of the belt,
    The depth of the belt layer adjacent to the framework layer is less than the width of the other layers of the belt and is 50-90%, preferably 70-75% of the average width of the other two layers.
    Figs. 1 a, b, c show a graphical method for constructing the angle (in magnitude and sign) of the belt layer adjacent to the frame layer, in accordance with the basic principle of the invention, with the angles D and specified; in fig. 2 - tire, radial section; in fig. 3 - the image of the selected section of the proposed tire with reinforced edges of the breaker reinforcement, plan view (radial direction); on fit, 4 — tire, radial section in its upper part in FIG. 5, image of a dedicated portion of the proposed lid with reinforced breaker reinforcement edges, plan view (radial direction).
    The invention is based on an analysis of the elementary parallelogram of stresses acting in the breaker reinforcement. Conventionally, it is assumed that one diagonal of this elementary parallelogram is parallel to the circumferential direction and has a length equal to one. Moreover, the opposite sides of the parallelogram are parallel to the circumferential direction and have a distance equal to one; the opposite sides of the parallelogram are parallel to the fibers or cord threads of a pair of oblique angles of the overlapping layers of the top. In such a parallelogram, the expansion voltages act on its other diagonal. On the other hand, the negative reaction of fibers or cord yarns to axial stresses during compression is also known. Therefore, a new principle of enhancing the strength of the apical reinforcement is introduced. It is proposed, in particular, to orient the effects of these stresses during compression in the transverse direction with respect to the fibers or cord threads of the third apical layer, moreover, the parallelogram of the fiber and the thread with a non-longitudinal diagonal are laid at an angle different no more than 30 from the perpendicular to the specified diagonal,
    Thus, the invention relates to a pneumatic tire, the reinforcement of which contains from the inside to the outside at least one skeleton layer of continuous fibers or cord yarns extended from the bead to the bead, forming an angle between 70 and 90 ° in the belt side of the circumferential direction. an angle smaller than the angle of the said fibers and filaments along the sides, as well as three layers of obliquely stacked on each other fibers or filaments bounded by the surface of the breaker, and these three layers
    intersect each other to form angles cL, (bf relative to the circumferential direction. This pinhole is characterized by the fact that the angle oi of the apical layer adjacent to the framework layer is associated with the angles i and the subsequent layers of the breaker so that the absolute value expressions
    CHA-tof J-2H ot2tc fitq; y
     0.6.
    0
    2t (5p4c -y -fcQjot (tag / 5-t (aG)
    According to the principle mentioned above, the strength effect is realized in a layer with an angle ot,.
    The principle of stiffening significantly reduces the total cross section of fibers or cord yarns per unit width of the layer with an angle oi, for example, by reducing the number of fibers or yarns or their specific section, and this principle is oriented in the transverse direction.
    In addition, the reinforcing layer, directly covering the frame layer, also provides the inclination of the fibers or cord yarns in the zone adjacent to the frame layer.
    As for the angles of the board, it is usually less than 45, and preferably between 15 and.
    There may be two cases. In the first case, the angles / 5 and j- have opposite signs, and the positive sign is the sign of the usual trigonometric direction, when the longitudinal direction is taken as the reference one. In this case, the angle oi is the sign of that of the two angles value.
    In the second case, the angles and have the same sign, while the sign of the angle (; always opposite to the sign of the angles / i and y.
    In addition, the case is considered when jb tl tg have the same value, and the angle oL can be chosen positively or positively with respect to the circumferential direction, provided that the above formula is observed.
    The edges of the apical reinforcement can be reinforced, for example, by bending the edges of the layer with angle 1 around the edges of the layer with angle J. This embodiment meets the requirements of using pneumatic tires on high-speed machines.
    Another embodiment provides for a stepwise arrangement across the width of three layers of the braker. As the narrowest layer, it is preferable to choose a layer with an angle of
    adjacent to the frame layer. In this case, the cranked bends of the fibers or cord threads of the frame layer, connecting the segments located on the sidewalls with the segments being under the layer with the angle o, are blocked by the outwardly protruding zones of the layer with the angle / 5. Such a structure favors maintaining the inclined position of the fibers or cord threads of the corresponding frame reinforcement zone, for example, when the tire rotates at high speed. This option provides for the location on a couple of layers with the bending of edges on the model just described.
    The invention and its embodiments cover all apical valves, regardless of their width and / or angle, formed by different layers, also refer to apical valves, using the principle of asymmetry and / or having an asymmetric structure, and, finally, to apical valves, made with partial overlapping of layers with or without interconnection in the transverse direction.
    The proposed pneumatic tire begins with the manufacture of a complete cylindrical billet on the drum, which consists in laying a carcass layer continuously stretched from one edge to another, successive layering of the breaker layers with corners ct, of necessity, in the subsequent application of the sidewalls and rubber to such reinforcement the tread. The molds & s can be made outside the vulcanization mold or inside it when laying all the components. However, in any case, after the final assembly of all reinforcement, the flanges should have some mobility.
    The fundamental principle of the invention, according to which the fibers or cord yarns of the reinforcing layer (with an angle oi) are located almost normal to the shrinkage stresses arising from the molding of the other two apical layers, act continuously. By virtue of this arrangement, the layer with an angle of - has the necessary degree of freedom so that during formation it is necessary to modify the angle of the fibers or filaments in the zone adjacent to the frame layer from below.
    The preferred method of manufacturing the pneumatic tire is to arrange the various layers of the breaker so that the shrinkage of the elementary parallelogram corresponding to the pair of layers with angles and j is more or (in extreme cases)
    shrinkage of the elementary parallelogram Maf corresponding to a pair of underlying layers. The latter pair is formed by a reinforcing layer with an o / angle, and a frame layer. If it is assumed that the angle of the frame layer is equal to /, then the expression of the above condition will be the following relation between. angles of the four apical layers:
    tcjo /. + tc5o / p tqSJ tq pt-btc y .. Preferably, the value of the expression tc оС + toj с / lies in the range of 1-4. Despite the reinforcement reinforcement in the rider, the pneumatic tires offered provide excellent comfort. It can be assumed that this is mainly due to the axial styling of the fiber segments or cord yarns of the skeleton layer in the area of the apex, as well as the fact that these fibers or cord yarns form articulated bends that soften the blows. If the width of the top layer with an angle c, adjacent to the frame layer, is less than the width of the pair of layers adjacent on top with angles fb and - f, the rubber layer, preferably placed between the outwardly projecting parts of the pair of apical layers and the frame layer, also contributes to shock absorption, emanating from the tread. The allowable widths of the breaker layer adjacent to the skeletal layer are 50-90% of the average width of the pair of adjacent apex matching. layers, the optimum range of these values is 70-75%. method of graphing. la oi. The belt layer adjacent to the frame armature consists in drawing an elementary parallel gram, one diagonal of which is parallel to the longitudinal direction of the tire. To do this, on a straight, parapleted longitudinal axis XK (not shown) f, lay an arbitrarily selected segment of the sun, whose length is 1, and then from point B, draw a straight BP, forming a sharp fb with the sun diagonal. equal to the corner of the second breaker layer. then, from point C, draw a straight Cj forming, with a diagonal, an acute angle ff equal to the angle of the third layer of the breaker. These two straight lines intersect at the D point. Then the point D (the middle of the BS segment) is repeated on the diagonal. The second diagonal of the elementary pair of the lelogram passes through DOTS.
    J3 and A. In the following, it is sufficient to restore from point A straight N, which is perpendicular to the straight D “Acute angle formed by this straight with the diagonal of the BC; - and ISKOME M is the angle ci, which in the preferred embodiment does not exceed 30 °. ,
    Elementary calculation allows confirming that between angles (i, and J in fig. 1, b, c, there is a relation. T d-5 ±: liii 2tp; fb-tc jr providing the determination of the optimal angle value in the case where / differs from tr. angle. In order to estimate shrinkage undergoing an elementary parallelogram corresponding to a pair of layers with angles p and j, for example, when forming a cylindrical billet of the proposed coating, it is sufficient to calculate (BS) differential ratio c and length of the sun. diagonal parallel to the longitudinal direction e Therefore, with (2 DM) is the differential with respect to fb and j width 2DA of the elementary parallelogram and the transverse direction, where DM is the length of the perpendicular dropped from the vertex) to the BC diagonal. The specified shrinkage is equal to y () that the shrinkage, for example, due to the formation of an elementary parallelogram corresponding to a pair of a layer with corners ci and cL (apex layer adjacent to the frame layer and a frame layer) is equal to - (icjoi tojcf) The preferred method. the manufacture of the proposed tire consists in arranging various layers so that the shrinkage of a pair of apical layers with angles fi and d is greater or at least equal to the shrinkage of a pair of layers with angles and aA. When using these C (the condition of the proposed tire is obtained (FIG. , 2 and 3) contains a continuous frame layer 1 anchored in the edges 2 of the loop by turning with turning the 3 side rings around the rods, as well as three breaker layers 4, 5 and 6. Fig. 3 shows (for the specific case under consideration) , what frame layer 1 is located below the breaker, in which its reinforcing fibers and cord form an angle with the longitudinal direction XX.On the sidewalls of the fiber and cord threads of the frame layer are almost radial. For fiber and cord threads of three layers 4.5 and 6 breakers, arranged in the order of their listing on frame layer 1, form acute angles oL f (B and t, respectively, with the longitudinal direction. Their widths are limited to the size of the tops. In the example described, the angles of the strands of layers 5 and 6 have the following meanings: PI 1b, with the positive voltage decreasing in the usual trigonometric sense. The breaker layer 4 is oriented at an angle of about 23 with respect to the circumferential direction. In this case, the expression tqrfi-t y-2t. (4P-4T) (and the optimal angle value is 40.5. In FIGS. 4 and 5, the same numerical designations are used for identical elements. The proposed tire on one side contains layer 7 (with an angle ot) adjacent to the skeleton layer is narrower than the layers 5 and 6 of the breaker reinforcement. On the other hand, layer 6 (with angle f) is inserted into edges 8 of underlying layer 5 (with angle / J). In a preferred embodiment, along C1, both sides of the narrower layer 7 are laid two rubber strips 9. The proposed tire (sizes 165-380) is schematically represented from Fig. 4 and 5, consists of composite reinforcement elements Frame layer: polyamide cord (1880/2/118 cords and decimeter), laid on the blank drum at an angle of 80 °, the distance between them is 3 66 mm. First breaker layer: viscose cord (1840/2/50 cords per decimeter), width 162 mm, angle. Rubber bands 55 (width 27 mm) Second belt 5 layer: polyvinyl alcohol cord 1330/2/2 (8 cords per decimeter), width 340 mm, laying angle 31 ° g Third layer 6 breaker: steel cord: 4 threads (23) 100 mm + 1 bandage (53 cords per decimeter), width 210 mm, laying angle + 78 °. The edges 8 of the second layer 5 of the belt are folded onto the third apex layer 6, then a rubber flange cover and rubber tread are applied to the entire reinforcement assembly and the molding is made with a molding ratio of 1.5, which means that the diameter of the molded tire is 1.5 times the diameter of the cylindrical billet. After molding in the area of the top, the following angles were formed: frame layer: - 55.0 ° (SL); first apical layer: ° + 23 ° (oL); second apical layer: - Gb third apical layer: +31 (f}; At the same time, before forming, the ratio of q-o (- (to-o) is 1.7. The proposed radial design of the tire with a three-layer breaker provides considerable strength and simplified technology for borka.
    权利要求:
    Claims (4)
    [1]
    1. A AIR CAR TIRE, comprising a carcass reinforcement located continuously from one side ring to another and including at least one wire or cord layer, and a belt reinforcement composed of three cord or wire layers stacked on top of one another, the filaments of which are inclined to the circumferential direction at angles, / 3, γ, respectively, while the angles / Ey are in the range of 15-35 °, characterized in that, in order to increase the manufacturability of the assembly, the frame reinforcement threads are located relatively circumferentially direction on the sidewalls of the tire at an angle of 70-90 °, and under the armature of the belt, at an angle smaller than on the sidewalls, the angle of inclination oL of the threads of the belt layer adjacent to the carcass layer is determined by the angle formed by the intersection of the straight line drawn through the intersection point of the parallelogram diagonals and perpendicular to one of the diagonals, and the other diagonal parallel to the circumferential direction, and the sides of the parallelogram are respectively parallel to the strands of the breaker layers located at an angle p> and j'K to the circumferential direction the detection.
    [2]
    2. The pneumatic tire tire according to claim 1, characterized in that the breaker armature has reinforced edges.
    [3]
    3. The tire of the pneumatic tire according to claim 1, characterized in that the density of the threads of the belt layer adjacent to the carcass layer is lower than the density of the threads of other layers of the belt.
    [4]
    4. Tire pneumatic tire according to claim 1, characterized in that the width of the layer of the belt adjacent to the layer of the carcass is less than the width of the other layers of the belt and is 50-90%, preferably 70-75% of the average width of the other two layers.
    SU, „, 1036240
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    同族专利:
    公开号 | 公开日
    DK151299B|1987-11-23|
    EG12269A|1979-12-31|
    IT1014308B|1977-04-20|
    IE39799B1|1979-01-03|
    DD114784A5|1975-08-20|
    DE2428386A1|1974-12-19|
    RO84547A|1984-06-21|
    AU6997074A|1975-12-11|
    NL170392B|1982-06-01|
    ES427113A1|1976-07-16|
    IE39799L|1974-12-12|
    BR7404769D0|1975-01-07|
    CA1008760A|1977-04-19|
    NL7407601A|1974-12-16|
    AT332239B|1976-09-10|
    LU70278A1|1975-03-06|
    AR199837A1|1974-09-30|
    NO143564B|1980-12-01|
    SE7407706L|1974-12-13|
    HU172400B|1978-08-28|
    IL44993D0|1974-09-10|
    YU153474A|1982-05-31|
    RO84547B|1984-08-30|
    NO742137L|1975-01-06|
    JPS5035804A|1975-04-04|
    ATA488474A|1975-12-15|
    DE2428386C2|1984-09-27|
    DK312174A|1975-01-27|
    DK151299C|1988-05-02|
    NL170392C|1982-11-01|
    FI179774A|1974-12-13|
    BE815866A|1974-12-04|
    CH592531A5|1977-10-31|
    NO143564C|1981-03-11|
    GB1477210A|1977-06-22|
    JPS5315562B2|1978-05-25|
    PL95360B1|1977-10-31|
    SE412551B|1980-03-10|
    IN140992B|1977-01-08|
    IL44993A|1976-10-31|
    FR2233190B1|1977-01-07|
    FR2233190A1|1975-01-10|
    ZA743754B|1975-06-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    NL131398C|1964-05-14|Michelin & Cie|
    FR1437415A|1964-12-18|1966-05-06|Michelin & Cie|Improvements to tire casings|
    DE1605616A1|1966-06-15|1971-03-11|Continental Gummi Werke Ag|Pneumatic vehicle tires|
    DE1605639A1|1967-11-30|1970-01-29|Continental Gummi Werke Ag|Pneumatic vehicle tires|
    DE1918424A1|1969-04-11|1970-10-15|Continental Gummi Werke Ag|Blank for pneumatic tires|
    DE1921750A1|1969-04-29|1970-11-12|Continental Gummi Werke Ag|Pneumatic vehicle tires|
    FR2128158B1|1971-03-08|1974-02-22|Michelin & Cie|DE2617838A1|1976-04-23|1977-10-27|Continental Gummi Werke Ag|VEHICLE AIR TIRES|
    FR2358282B1|1976-07-12|1980-04-30|Michelin & Cie|
    NL169054C|1976-08-02|1982-06-01|Michelin & Cie|AIR TIRE FOR VEHICLES FOR THE TRANSPORT OF LARGE AND HEAVY LOADS IN GROUNDS OUTSIDE THE HARDENED ROADS.|
    JPS55123462A|1979-03-16|1980-09-22|Nitto Electric Ind Co|Thermal hardening adhesive sheet and its incorporation working adhesive article|
    JPH0219002B2|1979-11-30|1990-04-27|Yokohama Rubber Co Ltd|
    JPH01223004A|1988-03-01|1989-09-06|Bridgestone Corp|Pneumatic tyre for high internal pressure and heavy load|
    FR2924977B1|2007-12-18|2009-12-11|Michelin Soc Tech|PNEUMATIC LIFT BY THE COMBINATION OF A CARCASE FRAME AND A TOP STRENGTH STRUCTURE|
    US9387727B2|2009-07-27|2016-07-12|Nv Bekaert Sa|Hybrid steel-textile reinforcement ply for radial tires|
    DE102016200132A1|2016-01-08|2017-07-13|Continental Reifen Deutschland Gmbh|Vehicle tires|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7321397A|FR2233190B1|1973-06-12|1973-06-12|
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