WO2005046976A1 - ランフラットタイヤ支持体の製造方法、ランフラットタイヤ支持体および空気入りランフラットタイヤ - Google Patents
ランフラットタイヤ支持体の製造方法、ランフラットタイヤ支持体および空気入りランフラットタイヤ Download PDFInfo
- Publication number
- WO2005046976A1 WO2005046976A1 PCT/JP2004/016821 JP2004016821W WO2005046976A1 WO 2005046976 A1 WO2005046976 A1 WO 2005046976A1 JP 2004016821 W JP2004016821 W JP 2004016821W WO 2005046976 A1 WO2005046976 A1 WO 2005046976A1
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- WO
- WIPO (PCT)
- Prior art keywords
- run
- support
- liquid
- tire
- pressure
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/047—Mould construction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/041—Means for controlling fluid parameters, e.g. pressure or temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/26—Making other particular articles wheels or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0681—Parts of pneumatic tyres; accessories, auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
- B60C17/04—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency
- B60C17/043—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency made-up of an annular metallic shell
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
- B60C17/04—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency
- B60C17/06—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency resilient
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0681—Parts of pneumatic tyres; accessories, auxiliary operations
- B29D2030/0683—Additional internal supports to be positioned inside the tyre, as emergency supports for run-flat tyres
Definitions
- the present invention relates to a method for manufacturing a run-flat tire support provided inside a tire so that even if the internal air pressure is reduced due to puncture or the like, the vehicle can travel a considerable distance in that state.
- the present invention relates to a flat tire support and a pneumatic run flat tire.
- a pneumatic tire is capable of run-flat running, that is, a tire that can run with a certain distance without worry even if the tire pressure becomes OPa due to puncturing (hereinafter referred to as a run-flat tire).
- a run-flat tire A core type run flat tire in which a core (support) is attached to a rim portion in a tire air chamber is known (for example, see Patent Document 1).
- a main component of such a core is an annular support member (shell).
- a metal plate material is cut into a predetermined length, then bent into a ring shape, and both ends in the longitudinal direction are joined to each other by welding to form a cylindrical material.
- a spatula drawing process is performed on a cylindrical member made of steel.
- Patent Document 1 JP-A-10-297226
- the present invention provides a method of manufacturing a seamless run-flat tire support, a seamless run-flat tire support, and a pneumatic run-flat tire including the run-flat tire support.
- the task is to provide
- the method for producing a run-flat tire support of the present invention described in claim 1 is characterized in that A method of manufacturing a run flat tire support capable of supporting a load during traveling, comprising: forming a cylindrical material having a flat metal bottom by deep drawing calorie; and forming an opening side and a bottom side of the cylindrical material. And a bending step of bending the cylindrical member into a shape having a protruding portion whose radially intermediate portion protrudes radially outward.
- a cylindrical material having a flat metal material bottom is formed by deep drawing, and the opening side of the cylindrical material and After removing the bottom side, the cylindrical material is curved into a shape having a protruding portion in which an intermediate portion in the axial direction of the cylindrical material projects radially outward, and a run flat tire support is formed.
- a cylindrical material without a seam can be obtained, and a run-flat tire support without a seam can be formed.
- a method for manufacturing a run-flat tire support according to the present invention described in claim 2 is a method for manufacturing a run-flat tire support capable of supporting a load during run-flat running, wherein the flat metal is formed by deep drawing.
- Material force Forming a cylindrical material having a bottom, bending the cylindrical material into a shape having a protruding portion in which an axially intermediate portion of the cylindrical material protrudes radially outward, and a shape including a protruding portion Removing the opening side and the bottom side of the cylindrical material which is curved.
- a cylindrical material having a flat metal material bottom is formed by deep drawing, and an axial center of the cylindrical material is formed.
- the opening side and the bottom side of the cylindrical material having the protruding portion are removed to form a run flat tire support.
- a seamless cylindrical member can be obtained, and a seamless run-flat tire support can be formed.
- the method for producing a support for a run-flat tire according to the present invention according to claim 3 is the method for producing a support for a run-flat tire according to claim 1 or 2, wherein in the forming step, the cylindrical material is A circle whose inner peripheral surface is a molding surface having a surface shape corresponding to the protrusion. After being inserted into the inner peripheral side of the cylindrical mold and filling the inner peripheral side of the cylindrical material with liquid, the liquid is pressurized and the cylindrical material is curved along the molding surface by the liquid pressure of the liquid. It is characterized by
- a method of manufacturing a support for a run-flat tire according to the present invention described in claim 4 is the method of manufacturing a support for a run-flat tire according to claim 3, wherein the forming step includes: After filling the liquid sealed in the bag body having elasticity on the side, the liquid is pressurized together with the bag body, and the liquid pressure of the liquid is applied to the cylindrical member through the bag body. .
- the method for producing a run-flat tire support of the present invention according to claim 5 is the same as the method for producing a run-flat tire support according to claim 3 or 4, wherein the molding step further comprises:
- the bulge pressure which is the maximum value of the liquid pressure applied by the liquid filled in the inner peripheral side of the cylindrical material to the cylindrical material, is P (KgfZmm 2 ), the thickness of the cylindrical material is T (mm), and the metal that forms the cylindrical material
- the tensile strength of the material is S (Kgf / mm 2 ) and the constant for determining the bulge pressure P is K (K is a positive real number)
- the constant ⁇ ⁇ is not less than 1.5 and not more than 20. It is characterized in that an arbitrary value within the range is selected, and the above-mentioned resin pressure ⁇ is set to a value calculated by the following equation (1).
- the run-flat tire support according to the present invention described in claim 6 is a run-flat tire support capable of supporting a load during run-flat running, and is formed by bending an intermediate portion in the axial direction of a seamless cylindrical material. A protrusion protruding outward in the direction is formed.
- the axially intermediate portion of the seamless cylindrical member is curved to form a projecting portion projecting radially outward. Therefore, a seamless run flat tire support can be provided. As a result, the strength around the periphery of the runflat tire support becomes uniform, and unnatural deformation or breakage in normal runflat running can be achieved without the need for the strong welding required for a seamless runflat tire support. Does not occur.
- the pneumatic run-flat tire according to the present invention as set forth in claim 7, is a carcass formed in a toroidal shape between a pair of bead cores, and a tire side portion disposed outside the carcass in the tire axial direction.
- a tire having a tread rubber layer disposed outside the carcass in the tire radial direction and forming a tread portion; a rim for mounting the tire on which the tire is mounted; And a support that is disposed inside and is attached to the rim together with the tire.
- the run flat tire support is the run flat tire support according to claim 3.
- An apparatus for producing a run-flat tire support according to the present invention as set forth in claim 8 is provided for an annular run-flat tire that is disposed inside a pneumatic tire and assembled to a rim together with the pneumatic tire.
- a manufacturing apparatus for manufacturing a support wherein a press-formed portion having a surface shape corresponding to a shape of a radial cross section of the support is formed on an inner peripheral surface, and a press-formed portion of the press-formed portion is formed.
- An annular molding die having a hollow portion into which a metal tubular material as a molding material of the support is inserted on the inner peripheral side, and a film-shaped material having elasticity and elasticity, and formed inside.
- a bag formed of a film-like material having elasticity and elasticity is filled with a liquid, and the bag is filled with a liquid.
- the liquid in the bag is pressurized by the pressurizing means to expand the bag to the outer peripheral side, while applying the liquid pressure to the cylindrical member through the bag.
- a method for manufacturing a support for a run-flat tire according to the present invention described in claim 9 is for manufacturing a support for a run-flat tire using the apparatus for manufacturing a support for a run-flat tire according to claim 8. After inserting a metal tubular member into the hollow portion, inserting the bag into the inner peripheral side of the tubular member in the hollow portion, and inserting the bag into the hollow portion. A molding step of pressurizing the liquid in the body or the liquid filled in the hollow portion by the pressurizing means, and plastically deforming the cylindrical member along the press forming portion by the liquid pressure of the liquid. .
- the tubular material that does not allow the liquid to come into contact with the tubular material that is the material for forming the support is added to the mold. Since plastic deformation can be performed along the pressed part, it is possible to completely prevent the liquid from adhering to the support formed from the tubular material (hide port foam molding). Generation and chemical change can be prevented.
- an annular run-flat tire is disposed inside a pneumatic tire and is assembled to a rim together with the pneumatic tire.
- a method for producing a support for use comprising: The support body is provided in a hollow portion provided on the inner peripheral side of the press-formed portion in an annular mold in which a press-formed portion having a surface shape corresponding to the shape of the radial cross section is formed on the inner peripheral surface.
- a metal tubular material which is a molding material, is inserted, and a bag formed of an elastic and stretchable film material and filled with a liquid is inserted into an inner peripheral side of the tubular material in the hollow portion.
- the liquid in the bag is pressurized by pressurizing means, and the liquid pressure of the liquid is applied to the cylinder through the bag, and the cylinder is plastically deformed along the press-formed portion.
- the bulge pressure which is the maximum value of the liquid pressure that the liquid pressurized by the pressurizing means acts on the cylinder through the bag, is set to P (Kgf / mm 2 ), the thickness of the cylindrical member T (mm), the tensile strength of the metallic material forming the cylindrical member S (KgfZmm 2), said Roh registration pressure P
- K is a constant (K is a positive real number)
- an arbitrary value within a range of 1.5 or more and 20 or less is selected as the constant ⁇
- the bulge pressure ⁇ is increased by the pressurizing means.
- the pressure is controlled to a calculated value of (KX S XT).
- a high-strength metal material such as high-strength steel, stainless steel, or ultra-high-strength steel is used as the material of the cylindrical member.
- the plastic material follows the shape of the press-formed part of the forming mold accurately.
- the cylindrical member that does not allow the liquid to come into contact with the cylindrical member which is a molding material for the support, can be plastically deformed along the press-formed portion of the molding die, the cylindrical member is formed (a cover opening form). Since the adhesion of the liquid to the formed (formed) support can be completely prevented, it is possible to prevent the occurrence of ⁇ or a chemical change on the support surface due to the influence of the attached liquid.
- a seamless run flat tire is provided.
- the present invention has an excellent effect that a support can be manufactured, and a run-flat tire support and a pneumatic run-flat tire including the run-flat tire support can be provided without a seam.
- FIG. 1 is an end view of a pneumatic run-flat tire cut along an axis of rotation when a rim is mounted according to a first embodiment of the present invention. (Only the upper part of the end face along the tire rotation axis O is shown.)
- FIG. 2 is a perspective view of the support according to the embodiment of the present invention, cut along a tire rotation axis O in FIG. 1.
- FIG. 3 is a schematic cross-sectional view showing a deep drawing step using a punch and a die in the method for manufacturing a support member according to the first embodiment of the present invention.
- FIG. 4 is a perspective view of a cylindrical member formed by deep drawing in the method of manufacturing a support member according to the first embodiment of the present invention.
- FIGS. 5 (A), 5 (B), and 5 (C) are views showing manufacturing steps in a method for manufacturing a support member according to the first embodiment of the present invention.
- A It is a perspective view which shows the cylindrical material shape
- B It is a perspective view which shows the cylindrical material from which the opening part side and the bottom part side were cut by the cutting process.
- C It is a perspective view which shows the shell (support member) shape
- FIGS. 6 (A) and 6 (B) show a configuration of a pressure forming apparatus for manufacturing a shell (support member) by forming a cover with a cover in a method of manufacturing a support member according to the first embodiment of the present invention.
- FIG. (A) It is sectional drawing which shows the apparatus state before the start of hide opening foam processing of a shell (support member).
- FIG. (B) It is sectional drawing which shows the apparatus state during the cover opening foam processing of a shell (support member).
- FIGS. 7 (A), 7 (B), and 7 (C) are views showing manufacturing steps in a method for manufacturing a support member according to a second embodiment of the present invention.
- A It is a perspective view which shows the cylindrical material shape
- B It is a perspective view which shows the cylindrical material from which the opening part side and the bottom part side were cut by the cutting process.
- C It is a perspective view which shows the shell (support member) shape
- FIG. 8 (A) and 8 (B) show a configuration of a pressure forming apparatus for manufacturing a shell (support member) by forming a cover with a cover in a method for manufacturing a support member according to a second embodiment of the present invention.
- FIG. (A) Shows the state of the equipment before the start of the processing of the cover opening form of the shell (support member) It is sectional drawing.
- (B) It is sectional drawing which shows the apparatus state during the cover opening foam processing of a shell (support member).
- FIG. 9 is a schematic cross-sectional view showing a deep drawing step using a punch and a liquid pressure in a method for manufacturing a support member according to a third embodiment of the present invention.
- FIG. 10 is a perspective view showing a configuration of a pressure molding device according to a second embodiment of the present invention.
- FIG. 11 (A) and FIG. 11 (B) are cross-sectional views showing the configuration of the pressure forming apparatus shown in FIG. 1, showing the state of the support ring before the start of forming the cover opening foam and during the formation of the cover opening foam. I have.
- FIGS. 12 (A) and 12 (B) are perspective views showing a support ring formed in a cover opening form by a pressure forming apparatus according to a fourth embodiment of the present invention.
- FIGS. 13 (A) and 13 (B) are views showing steps of manufacturing a support member according to a comparative example.
- (A) is a perspective view showing a cylindrical material obtained by welding both ends of a ring-shaped material.
- FIG. 9 (B) is a perspective view showing a shell (support member) formed from the cylindrical member of FIG. 8 (A).
- a run-flat tire including a support member according to a first embodiment of the present invention and a method of manufacturing the support member will be described with reference to the drawings.
- the run-flat tire 10 is a general wheel rim 12 in which a pneumatic tire 14 and a support 16 are assembled.
- the rim 12 to which the support 16 is assembled is a standard rim corresponding to the size of the pneumatic tire 14.
- the pneumatic tire 14 in this embodiment includes a pair of bead portions 18, a toroidal carcass 20 extending over both bead portions 18, and a plurality of carcasses 20 (in this embodiment, 2 A belt layer 22, a tread portion 24 formed on the upper portion of the belt layer 22, and a tire side portion 25 formed by covering the outside of the carcass 20 in the tire axial direction with a rubber layer.
- the tire shown in this embodiment has a general tire shape, the present invention can be applied to various tire shapes. In the figure, “0” is the axis of rotation of the tire, and “CL” is the center of the tire width direction perpendicular to the axis of rotation O. The road surface is shown.
- FIG. 2 shows a perspective view of a radial half cross section of the support 16 used in the run flat tire 10 cut along a cross section along the rotation axis O.
- the support 16 disposed inside the pneumatic tire 14 (see FIG. 1) is formed in a ring shape as a whole. 26 are provided with vulcanized rubber legs 28 bonded to both ends.
- the leg 28 which is an elastic body, has a ring shape in the longitudinal direction, and has a substantially rectangular cross section along the rotation axis O at right angles to the longitudinal direction. As shown in FIG. 1, the legs 28 are assembled by press-fitting the outer periphery of the rim 12 inside the pneumatic tire 14 using rubber elasticity when the rim of the support 16 is assembled.
- the shell 26 is formed by forming a thin plate having a cross-sectional shape shown in FIG. 1 in a ring shape (annular shape) as shown in FIG.
- the shell 26 has a projection 26A as a projection projecting outward in the radial direction, a recess 26B projecting inward in the radial direction formed therebetween, and an outside in the width direction of the projection 26A (as opposed to the recess 26B).
- Side part 26C that supports the load is formed on the side).
- a radially inner portion (rim side portion) of the side portion 26C is formed with a cylindrical flange portion 26D extending substantially in the tire rotation axis direction.
- the shell 26 is integrally formed of a metal material.
- a metal material used as the material of the shell 26 an aluminum-based, iron-based, magnesium-based, or titanium-based metal material can be used.
- “one system” means not only the strong metal itself, but also a material having a strong metal as a base alloy, a material having a strong metal force S, and a material having a strong metal as a base alloy. It is a concept that includes what has been done.
- the term “iron-based” includes not only iron itself, but also carbon steel, iron-zinc alloy, zinc plated steel sheet, and steel plated with iron-zinc alloy.
- the deep drawing step is a step of forming a cylindrical material having a flat metal material bottom by deep drawing.
- FIG. 3 shows a state in which a cylindrical material having a bottom is formed by deep drawing.
- a flat metal plate 30 is used as a metal material.
- the metal plate 30 is placed on a die surface 32A of a die 32 as a fixed-side mold.
- the die 32 has a cylindrical hole 32B with a bottom, and this hole 32B is used as a female die.
- a punch 34 as a movable mold is pushed down in the direction of arrow A.
- the punch 34 includes a columnar convex portion 34A, and the convex portion 34A is a male type.
- An overhang 34B is formed above the protrusion 34A in the figure.
- the cylindrical portion 36A of the cylindrical member 36 shown in FIG. 4 is a portion where the metal plate 30 shown in FIG. 3 is narrowed down into a cylindrical shape, and the bottom plate portion 36B of the cylindrical member 36 shown in FIG. This is a portion formed by being sandwiched between the bosses 34A and the die bottom surface 32C shown in FIG. Further, the flange portion 36C of the cylindrical member 36 shown in FIG. 4 is a portion formed between the punch overhang portion 34B and the die surface 32A shown in FIG.
- a metal pressing member is disposed at a position facing the die surface 32 A via the metal plate 30. You may press 0. Also, as shown in Fig. 3, one drawing process is performed with a pair of dies 32 and punches 34. It is not limited to the case where the cylindrical material 36 (see FIG. 4) is formed by pressing, but the drawing process may be performed twice (two steps) or more and the desired cylindrical material 36 may be formed by redrawing.
- the cutting step is a step of removing the opening side and the bottom side of the cylindrical member.
- FIG. 5A shows a cylindrical member 36 formed by deep drawing.
- a surface perpendicular to the central axis D of the cylindrical member 36 on the opening 36D side (upper part in the figure) and the bottom plate part 36B side (lower part in the figure) of the cylindrical member 36, that is, a surface along dotted lines 38 and 39 Is cut by a cutting means such as a laser cutter.
- a cutting means such as a laser cutter.
- the cylindrical member 36 has a seamless and integrally continuous material structure over the entire circumference.
- the bending step is a step of bending the cylindrical member into a shape having a protruding portion in which the axially intermediate portion of the cylindrical member protrudes radially outward.
- the cylindrical member 36 shown in FIG. 5 (B) is used to form the shaft as shown in FIG. A shell 26 having two convex portions 26A whose radially intermediate portions protrude outward in the radial direction is formed.
- FIG. 6 shows a pressure forming apparatus 40 for manufacturing the shell 26 by hide opening foam processing.
- This pressure forming apparatus 40 is for forming a shell 26 shown in FIG. 5C using a thin pipe-shaped cylindrical member 36 shown in FIG. 5B as a forming material.
- the pressure molding device 40 is provided with a thick cylindrical molding die 42, and the molding die 42 has a shell 26 (see FIG. 5 (C)) on its inner peripheral surface.
- a press-formed portion 142A having a corresponding surface shape is formed.
- a cylindrical member 36 is inserted into the hollow portion 144 of the molding die 42, and the outer peripheral surface of the cylindrical member 36 is connected to the inner peripheral surface of the molding die 42 (the pressure molding portion). Adhere to both side parts 42B) of 142A.
- a fixed base 46 is disposed below the mold 42 in the pressure forming apparatus 40, and a fixed plunger 48 protrudes from the upper surface of the fixed base 46.
- the fixed plunger 48 is fitted on the inner peripheral side of the cylindrical member 36 in the hollow portion 144.
- a rubber seal ring is attached to the tip of the outer peripheral surface of the fixed plunger 48 to seal between the cylindrical member 36 and the inner peripheral surface. 50 are installed. As a result, the lower opening of the cylindrical member 36 is sealed. In this state, the hollow portion 144 is filled with a liquid L such as water or oil.
- an elevating base 52 that can move in the height direction (vertical direction in the figure) is arranged above the forming die 42.
- a pressure plunger 54 projects from the lower surface of the elevating base 52.
- a rubber seal ring 56 is also attached to the tip of the outer peripheral surface of the pressurizing plunger 54 to seal between the inner peripheral surface of the cylindrical member 36.
- the elevating base 52 at the standby position shown in FIG. 6 (A) is lowered, and the pressurizing plunger 54 is moved. It is inserted inside the hollow portion 144 on the inner peripheral side of the cylindrical member 36. As a result, the opening on the upper side of the cylindrical member 36 is sealed, and the liquid L filled in the cylindrical member 36 is compressed to increase the liquid pressure. At this time, the pressurizing plunger 54 descends to the pressurizing position shown in FIG. 6B, and pressurizes the liquid L in the cylindrical member 36 until a predetermined pressure is reached.
- the cylindrical member 36 that has received this pressure is plastically deformed in the axial middle portion along the press-formed portion 142A, and protrudes radially outward (outer peripheral side) at the axial middle portion of the cylindrical material 36.
- Two convex portions 26A, 26A are formed.
- the cylindrical member 36 When forming the shell 26 as shown in (C), the cylindrical member 36 is mounted on the outer periphery of a forming die attached to the main shaft of a spatula drawing machine (not shown), and the cylindrical member 36 is rotated together with the forming die. Then, an operator presses a spatula against the outer periphery of the cylindrical member 36 and forms the material until the surface of the cylindrical material 36 is adapted to the mold.
- the mold used for spatula drawing has a protruding portion (in this embodiment, two protruding portions) protruding radially outward at the axially intermediate portion, similarly to the shell 26 of the finished product. ing.
- the cylindrical member shown in FIG. 36 is molded.
- the forming method and the shape of the cylindrical member 36 are basically the same as those in the first embodiment, and therefore the description is omitted.
- the bending step is a step of bending two axially intermediate portions of the cylindrical member 36 so as to protrude to the outer peripheral side by forming a cover opening, and forming a cylindrical member 80 having two convex portions 26A, 26A. is there.
- FIG. 8 shows a pressure forming apparatus for forming a cylindrical member 36 having a bottom plate portion 36B and a flange portion 36C into a cylindrical member 80 having two convex portions 26A, 26A by a nozzle opening form calorie. 8 2 is shown.
- This pressure forming apparatus 82 uses a cylindrical member 36 having a bottom plate portion 36B and a flange portion 36C shown in FIG. 7 (B) as a molding material and a cylindrical member having two convex portions 26A, 26A shown in FIG. 7 (C). This is for forming the material 80.
- the pressure molding device 82 is provided with a thick cylindrical molding die 84, and this molding die 84 has two convex portions on its inner peripheral surface.
- a press-formed portion 86 having a surface shape corresponding to the shape of 26A, 26A is formed.
- a cylindrical member 36 having a bottom plate portion 36B and a flange portion 36C is inserted into a hollow portion 88 of the forming die 84.
- the outer peripheral surface of the cylindrical member 36 is Adhere to the inner peripheral surface of 84 (both side parts 90 of pressure forming part 86).
- a fixed base 102 is disposed below the molding die 84, and a fixed plunger 104 protrudes from the upper surface of the fixed base 102.
- This fixed The upper surface of the cylinder 104 is brought into contact with the bottom of the cylindrical member 36 inserted into the hollow section 88. In this state, the cylindrical material 36 is filled with a liquid L such as water or oil.
- an elevating base 94 that is movable in the height direction (vertical direction in the drawing) by a hydraulic cylinder or the like is disposed above the molding die 84.
- a pressure plunger 96 protrudes from the lower surface of the lifting base 94.
- a ring-shaped seal / press member 98 is disposed on the outer peripheral side of the pressure plunger 96, and the seal / press member 98 is also moved in the height direction by a hydraulic cylinder or the like. It is possible to move.
- a seal ring 100 made of rubber is attached to the inner peripheral surface of the seal-pressing member 98 to seal the space between the seal-pressing member 98 and the pressure plunger 96.
- the lifting base 94 is lowered, and the pressurizing plunger 96 is inserted into the hollow member 88 on the inner peripheral side of the cylindrical member 36.
- the opening on the upper side of the cylindrical member 36 is sealed, and the liquid L filled in the cylindrical member 36 is compressed to increase the liquid pressure.
- the pressurizing plunger 96 descends to the pressurizing position shown in FIG. 8 (B), and pressurizes the liquid L in the cylindrical member 36 until a predetermined pressure is reached.
- the cylindrical member 36 which has received this pressure is plastically deformed in the axially intermediate portion along the press-formed portion 86 toward the outer peripheral side.
- the cutting step is a step of removing the opening side and the bottom plate side of the cylindrical member 80 having the two convex portions 26A, 26A.
- a cutting means such as a laser cutter.
- the shell 106 as shown in FIG. 7C is manufactured.
- the shell 106 has the same shape as the shell 26 obtained by the manufacturing method according to the first embodiment.
- a seamless cylindrical member 80 can be obtained, and the seamless circle 80 can be obtained.
- the tube 80 can be formed into a shell 106.
- the liquid L filled into the inner peripheral side of the cylindrical member 36 at the time of the foam opening can be reliably prevented from leaking from the bottom side of the cylindrical member 36.
- the sealing work for the liquid L filled in the inside 36 and the sealing structure of the pressure molding device 82 can be simplified.
- FIG. 3 the case where the metal plate 30 is deep drawn by pressing down the punch 34 has been described.
- the metal plate 30 is This is an embodiment of deep drawing.
- the configuration of the method for manufacturing a shell according to the third embodiment is characterized in that a hydraulic pressure is used instead of the die 32, and the other configurations are substantially the same as those of the first embodiment. Therefore, the same reference numerals are given and the description is omitted.
- a pressing member 58 that presses and holds the periphery of the metal plate 30 is provided around the punch 34 (in the figure, left and right).
- a hydraulic tank 60 is disposed at a position facing the punch 34 and the holding member 58 via the metal plate 30.
- the upper surface of the opening of the hydraulic tank 60 is a holding surface 60A so that the metal plate 30 can be sandwiched between the holding member 58 during deep drawing. It has become.
- a substantially cylindrical hydraulic chamber 60B is formed at the center of the hydraulic tank 60 so as to correspond to the boss 34A.
- the liquid pressure chamber 60B is filled with a liquid L such as water or oil.
- a pipe 60C is formed on the bottom surface of the hydraulic chamber 60B, and the pipe 60C is connected to a pump 62 outside the hydraulic tank 60. This pump 62 regulates the liquid pressure of the liquid L.
- the metal plate 30 When deep-drawing the metal plate 30 into a cylindrical shape, first, the metal plate 30 is arranged on the holding surface 60A, and the periphery of the metal plate 30 is pressed and held by the pressing member 58. Next, the bonder 34 is lowered, and the metal plate 30 is pushed into the hydraulic chamber 60B. At this time, the pump 62 adjusts the liquid pressure of the liquid L in the liquid pressure chamber 60B. Since the metal plate 30 is pressed against the outer peripheral surface of the punch 34 by the hydraulic pressure in the hydraulic chamber 60B, the metal plate 30 is formed along the outer peripheral shape of the punch 34. Thus, the metal plate 30 becomes a seamless cylindrical member 36 shown in FIG. Thereafter, the method of processing the formed cylindrical member 36 into the shell 26 shown in FIG. 5C is the same as in the first embodiment or the second embodiment.
- the method of forming using one hydraulic pressure in one of the molds uses this one type. Since the type is a general-purpose type (a type that does not require the shape of the type to correspond to the shape of the other type), the type can be simplified.
- the liquid pressure may be applied to the metal plate 30 via a rubber-like film or the like that directly applies the liquid pressure to the metal plate 30.
- FIG. 10 and FIG. 11 show an example of the pressure molding apparatus 34 according to the embodiment of the present invention.
- the pressure forming apparatus 134 is for forming the shell 26 of the support 16 using the cylindrical material 36 manufactured through the same process as that of the first embodiment as a forming material. It is.
- the pressure molding device 134 is provided with a molding die 138 formed as a whole with a thick cylindrical shape.
- the molding die 138 has a structure divided into two along a radial direction centered on the axis S thereof into a divided die 139 and a divided die 140.
- One end of each of the divided dies 139 and 140 has a hinge part 141.
- the split molds 139 and 140 can be opened and closed around the hinge 141.
- an opening / closing mechanism (not shown) is connected to the split dies 139 and 140 of the forming die 138. This opening / closing mechanism moves the split dies 139 and 140 into the molding shown in FIG.
- the split molds 139 and 140 are moved to the open position apart from each other.
- the mold 138 has an inner peripheral surface having a surface shape corresponding to a radial cross section of the shell 26, and a shell in the axially intermediate portion of the inner peripheral surface.
- a concave pressure-formed portion 142 corresponding to the cross-sectional shape of the 26 convex portion 26A and concave portion 26B is formed.
- the space on the inner peripheral side of the pressure forming part 142 in the forming die 138 is a hollow part 144 into which the cylindrical material 36 as a forming material of the shell 26 is inserted.
- the cylindrical member 36 is made of a metal material such as high-tensile steel, stainless steel, or ultra-high-tensile steel, and is formed in a thin cylindrical shape having a constant diameter corresponding to the maximum diameter of the shell 26. .
- the cylindrical member 36 is made of, for example, high-tensile steel having a tensile strength of 50 kgfZmm 2 or more, and has a thickness of about 0.8 mm to 1.8 mm.
- the cylindrical member 36 is inserted into the hollow portion 144 of the molding die 138 as shown in FIG. 11 (A), and is set so that its outer peripheral surface is in close contact with the inner peripheral surface of the molding die 138.
- a fixed base 146 is disposed below the forming die 138 in the pressure forming apparatus 134, and a cylindrical shape is formed from the upper surface of the fixed base 146.
- the formed fixed plunger 148 protrudes.
- the outer diameter of the fixed plunger 148 is slightly smaller than the inner diameter of the cylindrical member 36.
- the molding die 138 is placed on the upper surface of the fixed base 146 as shown in FIG. At this time, the fixed plunger 148 is inserted into the inner peripheral side of the cylindrical member 36 inserted into the hollow portion 144.
- the press forming apparatus 134 has a lifting / lowering supported by a device frame (not shown) movably along the height direction above a forming die 138.
- a base 150 is disposed, and a hydraulic cylinder (not shown) whose operating direction is a height direction is connected to the elevating base 150.
- a columnar pressurizing plunger 152 protrudes from the lower surface of the elevating base 150.
- the outer diameter of the pressure plunger 152 is slightly smaller than the inner diameter of the hollow portion 144.
- the tip of the pressurized plunger 152 has liquid inside A bag 154 filled with L is attached.
- the bag body 154 is formed in a substantially cup shape whose outer shell shape is open upward, and its open end (upper end) is fixed to the distal end surface of the pressure plunger 152 over the entire circumference.
- the pressurizing plunger 152 is sealed from the outside by the distal end surface.
- the bag 154 is formed of a film-like material made of vulcanized rubber such as NR, NBR, BR, IR, IIR, NOR, EPDM, etc., and has sufficient elasticity and elasticity. have.
- the liquid L a liquid having a low affinity for the vulcanized rubber forming the power bag 154 in which various liquids such as water and oil can be used is selected.
- the bag 154 is filled with a liquid state and elastically deformed by static pressure and gravity, and its outer diameter is smaller than the inner diameter of the cylindrical member 36 and its volume is a predetermined amount larger than the inner volume of the cylindrical member 36. As described above, the shapes and dimensions are set so as to be large.
- the difference between the volume of the bag body 154 and the internal volume of the cylindrical member 36 is set in accordance with the magnitude of the bulge pressure at the time of forming a cover opening to be described later.
- materials other than vulcanized rubber may be used.
- urethane elastomer may be used.
- the bag 154 may be formed by laminating a plurality of types of materials along the thickness direction.
- the operator restrains the split dies 139 and 140 of the forming die 138 at the forming position by the opening and closing mechanism, and also controls the inside of the hollow portion 144 of the forming die 138.
- the cylindrical material 36 is set in the shell 26, and the preparation for forming the shell 26 is completed.
- the pressure molding device 134 lowers the elevating base 50 at the standby position shown in FIG. 11A by the hydraulic cylinder, and removes the bag body 154 attached to the pressure plunger 152. It is inserted into the inner peripheral side of the cylindrical member 36 in the hollow portion 144.
- the bag 154 filled with the liquid L is sandwiched between the fixed plunger 48 and the pressure plunger 152 in the cylindrical member 36.
- the pressure forming device 134 After the bag 154 is inserted into the cylindrical member 36, the pressure forming device 134 further lowers the pressure plunger 152 by the hydraulic cylinder, and the pressure plunger 152 The liquid L is compressed to increase the liquid pressure of the liquid L. At this time, the pressurized liquid L elastically deforms the bag body 154 so as to expand toward the outer peripheral side with the rise in the liquid pressure, and the outer peripheral surface of the bag body 154 is uniformly formed on the inner peripheral surface of the cylindrical member 36. At the same time, pressure is applied to the cylinder 36 via the bag 154.
- the pressure forming device 134 lowers the pressure cylinder to a pressure position (see FIG. 11 (B)) where the hydraulic pressure in the bag body 154 becomes a predetermined bulge pressure P by the hydraulic cylinder. At this time, a bulge pressure P from the liquid L acts on the cylindrical member 36 via the bag body 154, and the cylindrical member 36 which has received the bulge pressure P becomes an intermediate portion in the axial direction facing the pressure forming portion 142. Plastically deforms so as to swell toward the outer peripheral side, and closely adheres to the inner surface of the pressure-formed portion 142 without any gap.
- the shape of the pressure-formed portion 142 is transferred to the cylindrical member 36 at the intermediate portion in the axial direction, and the pair of convex portions 26A and concave portions 26B are continuously formed.
- the cylindrical member 36 is formed (hide opening foam forming) into the shell 26 as shown in FIG. 5A.
- the pressure molding device 134 holds the pressure plunger 152 at the pressure position for a certain period of time by the hydraulic cylinder, and then returns to the standby position shown in FIG. 11 (A). In conjunction with this, the pressure molding device 134 moves the split molds 139 and 140 to the open position by the opening / closing mechanism to open the mold 138. The molded shell 26 is removed by moving the split dies 139 and 140 to the open position.
- the wall thickness of the cylindrical material 36 is T (mm)
- the tensile strength of the high-strength steel forming the cylindrical material 36 is S (KgfZmm 2 )
- the constant for determining the bulge pressure P is K (K is positive.
- the actual value of bulge pressure ⁇ can be obtained by the following equation (1).
- the constant K a force that can select an arbitrary value from a range of 1.5 or more and 20 or less is selected.
- This constant K is also a force of 2.0 or more and 15 or less. It is preferably 2.0 or more, and more preferably 10 or less.
- This constant K is in the above range even if the metal used as the forming material of the shell 26 is a metal other than high-tensile steel, for example, stainless steel or ultra-high-tensile steel.
- the bulge pressure P in the forming process is insufficient, and the cylindrical member 36 is shaped so as to accurately follow the shape of the press-formed portion 142. Since plastic deformation becomes difficult, the shell 26 formed from the cylindrical material 36 cannot be stably manufactured with the required dimensional accuracy. Further, as the dimensional accuracy of the shell 26 decreases, the reinforcing effect of the shape of the convex portion 26A and the concave portion 26B decreases, and the strength of the shell 26 along the radial direction and the torsion direction may be insufficient.
- the constant K is set to a value larger than 20, the bulge pressure P in the forming step becomes excessive, and a large internal strain is generated in the shell 26 formed from the cylindrical member 36.
- a pressure forming apparatus 134 having a pressurizing ability not less than the set value in the production line of the shell 26 according to the set value of the bulge pressure P. If this is set, the scale of the pressure molding device 134 becomes excessively large, so that the installation cost of the pressure molding device 134 is increased, which may cause an increase in the manufacturing cost of the shell 26. From this point of view, it is preferable that the constant K be set to the smallest possible value of V, as long as the quality of the shell 26 is not adversely affected.
- the liquid L is filled in the bag 154 formed of an elastic and stretchable film material, and the bag 154 is formed.
- the liquid L in the bag body 154 is pressurized by the pressurizing plunger 152 to expand the bag body 154 to the outer peripheral side.
- the liquid material L is not brought into contact with the cylindrical material 36 which is a forming material for the shell 26. Therefore, the operation of removing the liquid L from the shell 26 formed from the cylindrical member 36 can be eliminated.
- the adhesion of the liquid L to the shell 26 formed from the cylindrical material 36 can be completely prevented, so that the surface of the shell 26 generates ⁇ or a chemical change due to the effect of the attached liquid L. Can be prevented.
- the pressure molding device 134 since the liquid L is sealed in the bag body 154, the pressure molding device (see FIG. Compared with the above, the seal member for preventing the leakage of the liquid L, which is the internal force of the hollow portion 144, can be eliminated, so that parts replacement due to the deterioration of the seal member can be eliminated, and more through holes 27A can be provided. It is also possible to form a support ring 27 made of perforated punched metal as a material (see FIG. 12 (B)) or a support ring having a pair of cut ends using an end strip-shaped metal plate as a material.
- the pressure molding apparatus 134 when a high-strength metal material such as high tensile strength steel, stainless steel, ultra-high tensile steel, or the like is used as the material of the cylindrical member 36, it acts on the cylindrical member 36.
- the bulge pressure P By controlling the bulge pressure P to be calculated to the value of (KX S XT), the cylindrical member 36 is plastically deformed so as to accurately follow the shape of the press forming portion 142 of the forming die 138, and the required dimensional accuracy and It is possible to stably manufacture the shell 26 having mechanical performance, and prevent the mechanical properties from deteriorating due to excessive distortion of the shell 26.
- an appropriate output device can be appropriately selected as the pressure molding device 134 for forming the shell 26 in a closed mouth form, so that an increase in the manufacturing cost of the shell 26 can be effectively suppressed.
- a pressing means for inserting the pressing plunger 152 into the hollow portion 144 by a hydraulic cylinder is used as a means for pressing the liquid L in the bag body 154.
- a liquid L pressurized by a high-pressure pump or the like may be supplied into the bag 154 previously inserted into the hollow portion 144.
- the liquid pressure of the liquid L in the bag 154 is measured by a pressure sensor, and the liquid pressure is feedback-controlled based on the measurement result, whereby the liquid pressure in the bag 154 is accurately calculated (KXSXT). Value can be controlled.
- an aluminum alloy (JIS alloy number 6061-O material) having a plate thickness of 2.3 mm was used.
- this material is formed into a cylindrical material 36 shown in FIG. 5 (A) using the method of the third embodiment, and the height H of the cylindrical material 36 is set to 200 mm.
- the inner diameter S of the cylindrical member 36 was 450 mm.
- the opening 36D side (upper part in the figure) and the bottom plate part 36B side (lower part in the figure) of the cylindrical member 36 are cut with a laser cutter to obtain a pipe-shaped cylindrical member 36 of FIG. 5 (B).
- two convex portions 26A and 26A two mountain shapes shown in FIG. 5 (C) were formed by spatula drawing, and subjected to T6 heat treatment to obtain a shell 26.
- the above-described material is bent in a ring shape, and both ends 70A and 70B in the longitudinal direction are connected to each other by TIG welding. This was combined into a cylindrical material 70. Thereafter, as shown in FIG. 13 (B), the mixture was formed into a shape similar to that of the example by spatula drawing, and subjected to a T6 heat treatment to obtain a seal 72.
- the manufacturing time per shell 26 (see FIG. 5 (C)) according to the example and the manufacturing time per shell 72 according to the comparative example (see FIG. 13 (B)) As a result of comparison, the production time per unit was shorter in the example than in the comparative example.
- the shape and dimensions of the metal plate 30 as a material may be determined so that the flange portion 36C after deep drawing is minimized. Good.
- the forming of the cylindrical member 36 by the deep drawing process in the above embodiment may be a so-called multiple-piece process. If a large number of cylindrical members 36 can be obtained at the stage of manufacturing the shell 26, the manufacturing time per unit can be further reduced.
- the shell 26 having the two convex portions 26A, 26A is formed.
- the shape of the shell 26 to be formed is not limited to this, and the axially intermediate portion has a diameter. Any shape having a protruding portion protruding outward in the direction may be used.
- Example A1 The shell formed by hydration forming using the press forming apparatus 134 according to the present invention shown in FIG. 10 and FIG. 11 is referred to as Example A1, and the press forming apparatus (FIG. Example A2 is a shell molded with a hydration mouth using the above-mentioned method, and a conventional pressure molding apparatus in which a liquid is sealed inside and a bulge pressure P is applied by an elastic rubber bulge.
- a liquid is sealed inside and a bulge pressure P is applied by an elastic rubber bulge.
- Comparative Example A3 the inspection results of the dimensions of the shell molded by these pressure molding devices are shown below ( It is shown in Table 1).
- a constant K was appropriately selected within the range of 2.0 or more and 20 or less, and the value calculated by the above equation (1) was used.
- the dimensions of each part of the shell were measured, and those with a measured dimension error of ⁇ 5% or less with respect to the design dimensions were accepted, and those with a measured dimension error of more than ⁇ 5% were rejected.
- the constant K is selected within a range of 1.5 or more and 20 or less, and the resin pressure P is controlled to the value calculated by the above equation (1), and the nozzle opening foam molding is performed.
- the resulting shells are referred to as Examples B1 to B6, and using the pressure molding apparatus 134 according to the embodiment of the present invention, a constant K is selected within a range of less than 2.0 and over 20.0, and a bulge pressure P is selected.
- the shells formed by forming the cover with the closed mouth under the control of the calculated value of the above equation (1) are referred to as Comparative Examples B7 to B10.
- the evaluation results of the dimensional accuracy and compressive strength of these shells 26 are shown in Table 2 below. Indicated.
- the symbol “ ⁇ ” is used when the dimensional error with respect to the design value is less than 2%, and the symbol “ ⁇ ” is used when the dimensional error with respect to the design value is less than 5%. If the dimensional error is 5% or more and less than 10%, enter the symbol " ⁇ ". If the dimensional error is 10% or more, enter the symbol "X”.
- the evaluation results of the compressive strength are shown in Example B. (1) When the maximum strength was shown in B6 and the compressive strength was more than 90% and less than 100%, the symbol “ ⁇ " was shown, and the compressive strength was more than 80% and less than 90% In this case, enter the symbol " ⁇ ". When the compressive strength is 60% or more and less than 80%, enter the symbol " ⁇ ". When the compressive strength is 60% or less, enter the symbol "X”. did.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Tires In General (AREA)
- Tyre Moulding (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04818503A EP1695814B1 (en) | 2003-11-12 | 2004-11-12 | Method of producing run-flat tire supporting body |
DE602004021849T DE602004021849D1 (de) | 2003-11-12 | 2004-11-12 | Verfahren zur herstellung eines run-flat-reifen-stützkörpers |
JP2005515450A JPWO2005046976A1 (ja) | 2003-11-12 | 2004-11-12 | ランフラットタイヤ支持体の製造方法、ランフラットタイヤ支持体および空気入りランフラットタイヤ |
US10/579,220 US20070084538A1 (en) | 2003-11-12 | 2004-11-12 | Run-flat tire support member manufacturing method, run-flat tire support member and pneumatic run-flat tire |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003382001 | 2003-11-12 | ||
JP2003-382001 | 2003-11-12 |
Publications (1)
Publication Number | Publication Date |
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WO2005046976A1 true WO2005046976A1 (ja) | 2005-05-26 |
Family
ID=34587241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2004/016821 WO2005046976A1 (ja) | 2003-11-12 | 2004-11-12 | ランフラットタイヤ支持体の製造方法、ランフラットタイヤ支持体および空気入りランフラットタイヤ |
Country Status (5)
Country | Link |
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US (1) | US20070084538A1 (ja) |
EP (1) | EP1695814B1 (ja) |
JP (1) | JPWO2005046976A1 (ja) |
DE (1) | DE602004021849D1 (ja) |
WO (1) | WO2005046976A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1650011B1 (en) * | 2003-07-22 | 2008-07-09 | The Yokohama Rubber Co., Ltd. | Device for manufacturing support body for run flat tires |
US8855168B2 (en) * | 2007-04-16 | 2014-10-07 | Inductotherm Corp. | Channel electric inductor assembly |
JP6414149B2 (ja) * | 2016-06-29 | 2018-10-31 | 横浜ゴム株式会社 | タイヤ/ホイール組立体 |
FR3125974A1 (fr) * | 2021-08-05 | 2023-02-10 | Airbus Operations | Procédé et dispositif de fabrication de pièce à partir d’une plaque en matériau déformable, en particulier pour un bord d’un élément d’un aéronef. |
FR3125975A1 (fr) | 2021-08-05 | 2023-02-10 | Airbus Operations | Procédé et dispositif de fabrication de pièce à partir d’un coussin en matériau déformable, en particulier pour un bord d’un élément d’un aéronef. |
Citations (10)
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JPS52130465A (en) * | 1976-04-26 | 1977-11-01 | Yamaha Motor Co Ltd | Bulge processing method |
JPS5326253A (en) * | 1976-08-23 | 1978-03-10 | Tokyo Shibaura Electric Co | Overhang forming method |
JPH05504726A (ja) * | 1991-02-01 | 1993-07-22 | ハーデーエー メタルヴエルク ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 冷間変形可能な金属から成る中空体を静液圧変形する装置 |
JPH10297226A (ja) * | 1997-02-24 | 1998-11-10 | Continental Ag | 空気タイヤ付き車輪 |
JP2001519279A (ja) * | 1997-10-15 | 2001-10-23 | コンテイネンタル・アクチエンゲゼルシヤフト | 緊急走行支持体を備えた自動車車輪 |
JP2002234304A (ja) * | 2001-02-09 | 2002-08-20 | Bridgestone Corp | 中子付きリムホイール及びタイヤ・リムホイール組立体 |
JP2004001022A (ja) * | 2002-05-30 | 2004-01-08 | Bridgestone Corp | ランフラットタイヤ用支持体の製造装置及び製造方法 |
JP2004034904A (ja) * | 2002-07-05 | 2004-02-05 | Yokohama Rubber Co Ltd:The | タイヤ/ホイール組立体、ランフラット用支持体及びその製造方法 |
JP2004148707A (ja) * | 2002-10-31 | 2004-05-27 | Bridgestone Corp | 支持体の製造方法及び空気入りランフラットタイヤ |
JP2004160542A (ja) * | 2002-09-27 | 2004-06-10 | Kobe Steel Ltd | ビード付き円筒形リングの製造方法及びビード付き円筒形リング |
-
2004
- 2004-11-12 EP EP04818503A patent/EP1695814B1/en not_active Expired - Fee Related
- 2004-11-12 DE DE602004021849T patent/DE602004021849D1/de active Active
- 2004-11-12 WO PCT/JP2004/016821 patent/WO2005046976A1/ja active Application Filing
- 2004-11-12 JP JP2005515450A patent/JPWO2005046976A1/ja active Pending
- 2004-11-12 US US10/579,220 patent/US20070084538A1/en not_active Abandoned
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JPS52130465A (en) * | 1976-04-26 | 1977-11-01 | Yamaha Motor Co Ltd | Bulge processing method |
JPS5326253A (en) * | 1976-08-23 | 1978-03-10 | Tokyo Shibaura Electric Co | Overhang forming method |
JPH05504726A (ja) * | 1991-02-01 | 1993-07-22 | ハーデーエー メタルヴエルク ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 冷間変形可能な金属から成る中空体を静液圧変形する装置 |
JPH10297226A (ja) * | 1997-02-24 | 1998-11-10 | Continental Ag | 空気タイヤ付き車輪 |
JP2001519279A (ja) * | 1997-10-15 | 2001-10-23 | コンテイネンタル・アクチエンゲゼルシヤフト | 緊急走行支持体を備えた自動車車輪 |
JP2002234304A (ja) * | 2001-02-09 | 2002-08-20 | Bridgestone Corp | 中子付きリムホイール及びタイヤ・リムホイール組立体 |
JP2004001022A (ja) * | 2002-05-30 | 2004-01-08 | Bridgestone Corp | ランフラットタイヤ用支持体の製造装置及び製造方法 |
JP2004034904A (ja) * | 2002-07-05 | 2004-02-05 | Yokohama Rubber Co Ltd:The | タイヤ/ホイール組立体、ランフラット用支持体及びその製造方法 |
JP2004160542A (ja) * | 2002-09-27 | 2004-06-10 | Kobe Steel Ltd | ビード付き円筒形リングの製造方法及びビード付き円筒形リング |
JP2004148707A (ja) * | 2002-10-31 | 2004-05-27 | Bridgestone Corp | 支持体の製造方法及び空気入りランフラットタイヤ |
Non-Patent Citations (1)
Title |
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See also references of EP1695814A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1695814A1 (en) | 2006-08-30 |
US20070084538A1 (en) | 2007-04-19 |
EP1695814A4 (en) | 2007-08-08 |
JPWO2005046976A1 (ja) | 2007-05-31 |
EP1695814B1 (en) | 2009-07-01 |
DE602004021849D1 (de) | 2009-08-13 |
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