WO2016190042A1 - 等速自在継手用ブーツの締結バンド - Google Patents
等速自在継手用ブーツの締結バンド Download PDFInfo
- Publication number
- WO2016190042A1 WO2016190042A1 PCT/JP2016/063191 JP2016063191W WO2016190042A1 WO 2016190042 A1 WO2016190042 A1 WO 2016190042A1 JP 2016063191 W JP2016063191 W JP 2016063191W WO 2016190042 A1 WO2016190042 A1 WO 2016190042A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- velocity universal
- band
- universal joint
- constant velocity
- boot
- Prior art date
Links
- 239000011701 zinc Substances 0.000 claims abstract description 30
- 239000011777 magnesium Substances 0.000 claims abstract description 26
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 21
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000001681 protective effect Effects 0.000 claims abstract description 8
- -1 zinc-aluminum-magnesium Chemical compound 0.000 claims abstract description 5
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 4
- 238000007747 plating Methods 0.000 claims description 55
- 210000000078 claw Anatomy 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 13
- 238000005260 corrosion Methods 0.000 description 18
- 230000007797 corrosion Effects 0.000 description 18
- 239000011253 protective coating Substances 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005496 eutectics Effects 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910018084 Al-Fe Inorganic materials 0.000 description 1
- 229910018192 Al—Fe Inorganic materials 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910004349 Ti-Al Inorganic materials 0.000 description 1
- 229910004692 Ti—Al Inorganic materials 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 1
- 229910009369 Zn Mg Inorganic materials 0.000 description 1
- 229910007573 Zn-Mg Inorganic materials 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
- F16D3/843—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers
- F16D3/845—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers allowing relative movement of joint parts due to the flexing of the cover
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2/00—Friction-grip releasable fastenings
- F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
- F16B2/08—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using bands
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/82—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/565—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of zinc
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
Definitions
- the present invention is attached to fixed and sliding type constant velocity universal joints incorporated in, for example, drive shafts and propeller shafts, and is fastened with a boot for preventing foreign matter from entering the joints and preventing lubricant leakage from the joints.
- a boot for preventing foreign matter from entering the joints and preventing lubricant leakage from the joints.
- constant velocity universal joints that are used as means for transmitting rotational force from an automobile engine to wheels at a constant speed: a fixed constant velocity universal joint and a sliding constant velocity universal joint. Both of these constant velocity universal joints have a structure in which two shafts on the driving side and the driven side are connected so that rotational torque can be transmitted at a constant speed even if the two shafts have an operating angle.
- the drive shaft that transmits power from the engine of the automobile to the driving wheel needs to correspond to the angular displacement and axial displacement due to the change in the relative positional relationship between the engine and the wheel, the engine side (inboard side) ) And a fixed type constant velocity universal joint on the drive wheel side (outboard side), and both constant velocity universal joints are connected by an intermediate shaft.
- the fastening band described in Patent Document 1 is a hose band that is used in a state in which the band-shaped member 1 is rolled into a ring shape and both ends thereof are overlapped on the inside and the outside.
- This band is provided with a locking hole 2 in the outer overlapping portion 1a of the band-shaped member 1, a protrusion 3 that engages with the locking hole 2 in an inner overlapping portion 1b of the band-shaped member 1, and further, the band-shaped member 1
- the fastening ear part 4 is provided in a part in the longitudinal direction.
- the front end portion 5 of the inner overlapping portion 1a is formed in a taper shape in which the thickness on the front end side decreases, and the front end portion 5 is provided with a punched hole or a cutout hole. Then, the diameter of the ear portion 4 is reduced by plastic deformation.
- the band described in the cited document 2 is obtained by rounding a metal band 6 so that both ends overlap each other, and an engagement hole 9 and a bent portion are formed in an outer overlapping portion 6 a of the band 6.
- a caulking protrusion 7 that rises in the outer diameter direction is provided, and a cut-and-raised protrusion 10 that engages with the engagement hole 9 is provided on the inner overlapping portion 6 b of the band 6.
- the inner surface of the protruding portion 11 facing the inner surface of the outer overlapping portion 6 a with a distance corresponding to the amount of crimping of the crimping protrusion 7 is continuous with the cylindrical inner surface of the band 6.
- the height at the tip of the protruding portion 11 is equal to or greater than the plate thickness of the band 6. Also in this case, the diameter of the caulking protrusion 7 is reduced by plastic deformation.
- the band described in the cited document 3 is provided with the engaging claw 16 and the first tool claw 17 in the inner overlapping portion 15 a of the belt-like member 15, and is engaged with the outer overlapping portion 15 b of the belt-like member 15.
- a hole 19 and a second tool claw 20 are provided. 9B, the engaging claw 16 and the engaging hole 19 are locked by forcibly bringing the first tool claw 17 and the second tool claw 20 close to each other.
- the band described in Patent Document 4 is temporarily tightened in the direction of diameter reduction from the temporarily fixed state and the temporary fixing protrusion 22 that holds the temporarily fixed state wound around the outer periphery of the boot of the band-shaped member 15.
- a locking protrusion 23 for holding the tightened state of the belt-like member 15, and a protrusion 24 for restricting the idle rotation of the belt-like member 15 with respect to the boot is formed along the length direction of the inner overlapping portion.
- the diameter is reduced by forcibly bringing the first tool claw 17 provided in the inner overlapping portion 15b and the second tool claw 20 provided in the outer overlapping portion 15a close to each other.
- a material (material) of the band described in the above-mentioned document it is a metal such as stainless steel in Patent Document 1, and is described as a metal in Patent Document 2 and Patent Document 3, and in Patent Document 4, a material (material) is used. ) Is not described.
- Patent Document 1 If stainless steel is used as described in Patent Document 1, the corrosion resistance is excellent and stable, but the cost is high. Moreover, there is no specification about the metal described in patent document 2 and patent document 3. In such a case, a plated steel sheet can be considered in consideration of strength and corrosivity. However, when a generally known plated steel sheet is used, since the base material is cut and formed when the fastening band is processed, the cut end face portion is exposed and the portion is corroded, resulting in poor corrosion resistance. That is, when a plated steel sheet is used, the plating peels off when cut or pressed, and the peeled portion is oxidized (rusted).
- the present invention provides a fastening band for a boot for a constant velocity universal joint that can secure necessary sealing properties, rust prevention properties, and corrosion resistance, and can reduce costs.
- the fastening band of the constant velocity universal joint boot according to the present invention is a fastening band using a steel plate coated with a plating layer as a base material, and the plating layer forms a protective film on the plating peeling site by the melted component. It has a self-healing function.
- the plating layer has a self-repairing function, and the plating peeling site can be covered with a protective film formed by a component dissolved from the plating layer.
- a zinc-aluminum-magnesium alloy plated steel sheet As a base material. In this case, aluminum-magnesium is melted, and a dense zinc-based protective coating containing aluminum-magnesium is formed as the protective coating.
- aluminum can be 4.0 to 14.0% by mass
- magnesium can be 1.0 to 10.0% by mass
- the remaining components can be zinc
- the content of aluminum and magnesium can be 15%.
- zinc can be 85 mass% or more.
- It consists of a band-shaped member that is overlapped at both ends and rounded into a ring shape, and an engagement hole is provided in an outer part of the overlapping part of the band-shaped member and engages with the engagement hole in an inner part of the overlapping part of the band-shaped member A protrusion is provided, and a fastening ear is provided on a part of the belt-like member.
- It consists of a belt-like member that is rolled up into a ring shape with both ends overlapped, and provided with an engagement claw and a first tool claw on one end side of the belt-like member, and with an engagement hole and a second tool claw on one end side of the belt-like member From the state in which the belt-shaped member is rolled up and the both ends are overlapped, the first tool claw and the second tool claw are brought close to each other to reduce the diameter, and the engagement claw is engaged with the engagement hole. It may be allowed.
- the mechanical properties of the steel sheet to be used have a tensile strength of 270 MPa or more and an elongation at break of 30% or more. If the tensile strength is less than 270 MPa and the elongation at break is less than 30%, the constant velocity universal joint boot may be broken by the tightening force.
- the cut end face portion or the engagement contact portion exposed to the outside by the protective film formed by the component dissolved from the plating layer. Can be covered, and exhibits excellent rust prevention and corrosion resistance.
- the tightening band can be of various existing forms such as a so-called omega band having a caulking protrusion (clamping ear), or a hook band that engages the protrusion with the engaging hole.
- omega band having a caulking protrusion (clamping ear)
- hook band that engages the protrusion with the engaging hole.
- FIG. 3 is a side view of the first fastening band of the present invention before tightening in a state of being rounded into a ring shape.
- FIG. 3 is a side view showing the first fastening band of the present invention after being tightened in a state of being rounded into a ring shape. It is a top view before showing the 2nd fastening band of this invention and rounding into a ring shape. It is a side view before showing the 2nd fastening band of this invention and rounding into a ring shape.
- FIG. 6 is a side view showing a second fastening band of the present invention and before fastening in a state of being rounded into a ring shape.
- FIG. 6B It is a side view of the conventional 1st fastening band. It is a side view of the conventional 2nd fastening band.
- FIG. 9 is a side view showing a conventional third fastening band before fastening.
- FIG. 9 is a side view showing a conventional third fastening band after fastening.
- FIG. 6 is a side view showing a conventional fourth fastening band before fastening. It is a side view after the fastening which shows the conventional 4th fastening band.
- FIG. 5 is a drive shaft using the fastening band of the constant velocity universal joint boot shown in FIGS. 1A and 1B according to the present invention.
- This drive shaft includes a fixed type constant velocity universal joint 51, a sliding type constant velocity universal joint 52, and a shaft 50 that connects these constant velocity universal joints.
- a Barfield type constant velocity universal joint is used for the fixed type constant velocity universal joint 51
- a tripod type constant velocity universal joint is used for the sliding type constant velocity universal joint 52.
- the fixed type constant velocity universal joint 51 includes an outer joint member 55 in which a plurality of tracks 53 extending in the axial direction are formed on the inner spherical surface 54, and an inner joint member in which a plurality of tracks 56 extending in the axial direction are formed on the outer spherical surface 57. 58, a plurality of balls 59 that transmit torque between the track 53 of the outer joint member 55 and the track 56 of the inner joint member 58, the inner spherical surface 54 of the outer joint member 55, and the outer joint member 58. And a cage 60 interposed between the spherical surface 57 and holding the ball 59.
- the sliding type constant velocity universal joint 52 includes an outer joint member 62 provided with three grooves 61 extending in the axial direction on the inner periphery and provided with roller guide surfaces 61a facing each other on the inner wall of each groove 61, and a radial direction.
- a tripod member 64 as an inner joint member provided with three leg shafts 63 protruding in the direction, and torque transmission means rotatably supported by the leg shaft 63 and rotatably inserted in the groove 61 of the outer joint member As a roller 65.
- the roller 65 is fitted on the outer diameter surface of the leg shaft 63 via a plurality of rollers 66 arranged along the circumferential direction.
- the tripod member 64 includes a boss portion 67 and the leg shaft 63 extending in the radial direction from the boss portion 67.
- the shaft 50 has male splines 50a and 50b formed at both ends thereof, one male spline 50a is fitted into the inner joint member 58 of the fixed type constant velocity universal joint 51, and the other male spline 50b is slidable at a constant speed.
- the tripod member 64 of the universal joint 52 is fitted.
- a female spline 72 is formed in the axial hole 71 of the inner joint member 58, and one male spline 50 a of the shaft 50 is fitted into the axial hole 71 of the inner joint member 58 and meshes with the female spline 72.
- the other male spline 50 b of the shaft 50 is fitted into the axial hole 73 of the boss 67 of the tripod member 64 and meshes with the female spline 74 of the axial hole 73.
- the fixed type constant velocity universal joint 51 is provided with a boot 80A for sealing the opening of the outer joint member 55, and the sliding type constant velocity universal joint 52 is used for sealing the opening of the outer joint member 62.
- Boots 80B are attached.
- the boots 80 and 80B include a large-diameter attachment portion 80a, a small-diameter attachment portion 80b, and a bellows portion 80c constituting a bent portion that connects the large-diameter attachment portion 80a and the small-diameter attachment portion 80b.
- the large-diameter mounting portions 80a of the boots 80A and 80B are fastened and fixed by fastening bands 82 (82A and 82B) at boot mounting portions 85 and 85 formed on the outer diameter surface on the opening side of the outer joint members 55 and 62,
- the small-diameter mounting portion 80b is fastened and fixed by fastening bands 83 (83A and 83B) at predetermined portions (boot mounting portions 86 and 86) of the shaft 50.
- a first fastening band 82 (83) shown in FIGS. 1A and 1B is composed of a band-shaped member 90 that is rounded into a ring shape by overlapping both ends.
- An engagement hole 91 is provided in the outer portion 90 a of the overlapping portion of the belt-like member 90, and a protrusion 92 that engages with the engagement hole 91 is provided in the inner portion 90 b of the overlapping portion of the belt-like member 90.
- a fastening ear portion 93 is provided on a part of the belt-like member 90.
- the band member 90 rounded into a ring shape is reduced in diameter by caulking the ear portion 93 as shown in FIG.
- the protrusion 92 is engaged with 91, and the large-diameter attachment portion 80 a and the small-diameter attachment portion 80 b are fastened, and can be attached to the outer joint members 55 and 62 of the constant velocity universal joints 51 and 52 and the shaft 50.
- the fastening band 82 (83) shown in FIG. 2A and FIG. 2B and FIG. 3A and FIG. 3B is a second fastening band, and is composed of a belt-like member 100 that is rounded into a ring shape by overlapping both ends.
- the engaging claw 101 and the first tool claw 102 are provided at the one end portion 100a, and the engaging hole 103 and the second tool claw 104 are provided at the other end portion 100b of the belt-like member 100.
- the fastening band shown in FIG. 4 is a so-called annular band 105, which is formed by connecting annular bands.
- the steel plate 111 which gave the plating layer 110 was used for the base material as a fastening band. That is, in the fastening band shown in FIGS. 1A and 1B, a steel plate 111 having a plating layer applied to the belt-like member 90 is used, and in the fastening band shown in FIGS. 2A to 3B, a steel plate 111 having a plating layer applied to the belt-like member 100 is used. In the fastening band shown in FIG. 4, a steel plate 111 in which a plating layer is applied to an annular band to be joined is used.
- the plating peeling part is a cut end face part obtained by cutting the base material when the fastening band is processed, a part where the plating is peeled off when pressed, and a protrusion in the type in which the protrusion is engaged with the engagement hole. A contact portion that contacts the engagement hole, and the like.
- parts such as a cutting
- the plating layer 110 is made of, for example, ZAM (registered trademark of Nisshin Steel Co., Ltd.), which is obtained by adding aluminum and magnesium to zinc. That is, from the mass fraction specified in JIS G 3316, from 5.0% to 13.0% aluminum, 2.0% to 4.0% magnesium, a total of less than 1.0% of other elements and the balance zinc In such a plating bath, steel plates and steel strips (hereinafter referred to as plates and coils) subjected to hot-dip plating with equal thickness on both sides can be used.
- ZAM registered trademark of Nisshin Steel Co., Ltd.
- the plating layer 110 is a zinc-aluminum-magnesium alloy.
- aluminum is 4.0 to 14.0% by mass
- magnesium is 1.0 to 10.0% by mass
- the remaining components are zinc. It is said.
- content of aluminum and magnesium shall be 15 mass% or less
- zinc shall be 85 mass% or more.
- the plating layer may contain silicon, titanium, boron or the like.
- silicon is preferably 0.3% by mass or less
- titanium is 0.1% by mass or less
- boron is preferably 0.05% by mass or less.
- the magnesium contained in the plating layer has the effect of forming a zinc-based corrosion product containing magnesium in the outermost layer of the plating layer and reducing the corrosion rate of the plating layer together with the aluminum in the plating layer. This effect is due to the fact that zinc-based corrosion products containing magnesium are stably present on the plating layer for a long period of time, and the formation of zinc oxide that degrades the corrosion resistance is suppressed.
- zinc and magnesium in the plating layer form a zinc-based corrosion product containing magnesium
- aluminum in the plating layer forms a zinc-aluminum-based corrosion product with extremely strong adhesion, contributing to improved corrosion resistance.
- zinc / aluminum / Zn 2 Mg ternary eutectic appears in the solidification structure of the plating layer by containing aluminum in the plating layer. Since this ternary eutectic structure is finer than the zinc / Zn 2 Mg binary eutectic structure, the ternary eutectic structure is preferable from the viewpoint of corrosion resistance and plating layer hardness.
- the addition of Ti and B suppresses the formation of a Zn 11 Mg 2 phase that impairs the surface appearance, and the Zn—Mg-based intermetallic compound crystallized in the plating layer is substantially Zn. 2
- Ti is contained in an amount of 0.001% by mass or more, generation of a Zn 11 Mg 2 phase can be effectively suppressed.
- Ti exceeds 0.1% by mass, Ti—Al-based precipitates grow in the plating layer, and unevenness (pumps) are generated in the plating layer, which deteriorates the appearance.
- it is 0.002 mass% or more.
- B and it is possible to suppress the generation of the inclusion 0.001 mass% or more effectively Zn 11 Mg 2 phase.
- B exceeds 0.05% by mass, Ti—B-based precipitates and AlB-based precipitates grow in the plated layer, and the plated layer becomes uneven, which deteriorates the appearance.
- it is 0.001% by mass or more.
- Silicon also has an effect of suppressing the growth of the Al—Fe alloy layer at the interface between the plating layer and the base steel. In this case, the silicon content is preferably 0.3% by mass or less.
- the tensile strength is 270 MPa or more and the elongation at break is 30% or more.
- the constant velocity universal joint boot can be fixed by a stable tightening force.
- the tightening band 82 (83), various existing forms such as a so-called omega band having a caulking protrusion (tightening ear portion 93) and a hook band for engaging the protrusion 101 with the engaging hole 103 are used. Therefore, it is not necessary to adopt a special mounting method at the time of use, and it can be mounted by the same mounting method as a conventional fastening band.
- the plating layer 110 After forming the plating layer 110, it is preferable to perform a chemical conversion treatment with a chromium-free coating component such as an inorganic, organic, or phosphoric acid treatment as a post-treatment.
- a chemical conversion treatment with a chromium-free coating component such as an inorganic, organic, or phosphoric acid treatment as a post-treatment.
- the corrosion resistance is further improved, the workability such as the prevention of wrinkling, and the adhesion after coating are improved.
- the inorganic coating component is excellent in corrosion resistance and workability.
- chloroprene rubber As described above, the embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and various modifications are possible.
- chloroprene rubber As constant velocity universal joint boots, chloroprene rubber, urethane rubber, chlorination It may be a rubber boot such as polyethylene rubber, acrylic ethylene rubber, or silicone rubber, or may be a resin boot such as a polyester-based thermoplastic elastomer.
- the material is not limited to the ZAM material, and other galvanized steel sheets can be used. That is, since zinc (Zn) contained in the plating layer has a higher ionization tendency than iron (Fe), the corrosion of Fe, which is the original plate, occurs when Zn dissolves before Fe in a corrosive environment such as water. What is necessary is just to prevent.
- a plating method for example, various conventional methods can be employed such as electroplating and electroless plating.
- the constant velocity universal joint may be a drive shaft or a constant velocity universal joint used for a propeller shaft.
- the fixed constant velocity universal joint is not limited to the Rzeppa type or the Barfield type, and may be an undercut free type.
- the sliding constant velocity universal joint is not limited to the tripod type, but is also a double offset type, a cross groove type. It may be a mold or the like. In the case of a tripod type constant velocity universal joint, it may be a single roller type or a double roller type.
Abstract
めっき層（１１０）を施した鋼板（１１１）を母材に用いた締結バンドである。めっき層（１１０）は、溶け出した成分によってめっき剥離部位に保護被膜（１１２）を形成する自己修復機能を有する。亜鉛－アルミニウム－マグネシウム合金めっき鋼板を母材に用いた。アルミニウムを４．０～１４．０質量％、マグネシウムを１．０～１０．０質量％とし、残りの成分を亜鉛とした。アルミニウムとマグネシウムとの含有量を１５質量％以下として、亜鉛を８５質量％以上とした。
Description
本発明は、例えばドライブシャフトやプロペラシャフトに組み込まれる固定式および摺動式等速自在継手に取り付けられ、継手外部からの異物侵入や継手内部からの潤滑剤漏洩を防止するためのブーツを締め付ける締結バンドに関する。
例えば、自動車のエンジンから車輪に回転力を等速で伝達する手段として使用される等速自在継手には、固定式等速自在継手と摺動式等速自在継手の二種がある。これら両者の等速自在継手は、駆動側と従動側の二軸を連結してその二軸が作動角をとっても等速で回転トルクを伝達し得る構造を備えている。
自動車のエンジンから駆動車輪に動力を伝達するドライブシャフトは、エンジンと車輪との相対的位置関係の変化による角度変位と軸方向変位に対応する必要があるため、一般的にエンジン側（インボード側）に摺動式等速自在継手を、駆動車輪側（アウトボード側）に固定式等速自在継手をそれぞれ装備し、両者の等速自在継手を中間シャフトで連結した構造を具備する。
これら摺動式等速自在継手あるいは固定式等速自在継手では、継手内部に封入されたグリース等の潤滑剤の漏洩を防ぐと共に継手外部からの異物侵入を防止するため、等速自在継手の外側継手部材と中間シャフトとの間にブーツを装着している。この種のブーツは、金属製のブーツバンド（例えば、特許文献１～特許文献４参照）で締め付けて外側継手部材および中間シャフトに固定することによりシール性が確保されている。
特許文献１に記載の締結バンドは、図７に示すように、帯状部材１をリング状に丸めてその両端部を互いに内側と外側に重ねた状態で使用されるホースバンドである。このバンドは、帯状部材１の外側重なり部分１ａに係止孔２を設けるとともに、帯状部材１の内側重なり部分１ｂに前記係止孔２に係合する突起３を設け、さらには、帯状部材１の長手方向の一部に締付け耳部４を設けたものである。また、内側重なり部分１ａの先端部５が、先端側の板厚が減少するテーパ状に形成され、かつ、この先端部５には打ち抜き孔や切欠孔を設けたものである。そして、耳部４を塑性変形させることによって、縮径させるものである。
また、引用文献２に記載のバンドは、図８に示すように、金属製の帯状のバンド６を両端部が重なるように丸め、そのバンド６の外側重なり部分６ａに、係合孔９及び折り曲げによって外径方向に盛り上がる加締め突起７を設け、バンド６の内側重なり部分６ｂに係合孔９と係合する切り起こしの突起１０を設けたものである。また、外側重なり部分６ａの内面に内側重なり部分６ｂの先端と加締め突起７の加締め量に相当する間隔をおいて対向する突出部１１を、その内面がバンド６の円筒形内面と連続するように設け、その突出部１１の先端における高さをバンド６の板厚以上としている。この場合も、加締め突起７を塑性変形させることによって、縮径させるものである。
引用文献３に記載のバンドは、図９Ａに示すように、帯状部材１５の内側重なり部分１５ａに係合爪１６及び第１の工具爪１７を設けるとともに、帯状部材１５の外側重なり部分１５ｂに係合孔１９及び第２の工具爪２０を設けたものである。そして、図９Ｂに示すように、第１の工具爪１７と第２の工具爪２０とを強制的に近接させることにより係合爪１６と係合孔１９を係止させるものである。
特許文献４に記載のバンドは、図１０Ａ及び図１０Ｂに示すように、帯状部材１５のブーツの外周に巻き付けた仮止め状態を保持する仮止め突起２２と、仮止め状態から縮径方向に締め付けられた帯状部材１５の締め付け状態を保持するロック突起２３とを備えたものであり、さらには、ブーツに対する帯状部材１５の空回りを規制する突起部２４が内側重なり部の長さ方向に沿って形成されている。この場合も、内側重なり部分１５ｂに設けられた第１の工具爪１７と外側重なり部分１５ａに設けられる第２の工具爪２０とを強制的に近接させることにより縮径させることになる。
ところで、前記文献に記載のバンドの材質（素材）としては、特許文献１ではステンレス鋼等の金属であり、特許文献２及び特許文献３では金属製と記載され、特許文献４では、材質（素材）についての記載はない。
特許文献１に記載のようにステンレス鋼を用いれば、耐食性に優れて安定するが、コスト高となる。また、特許文献２及び特許文献３に記載されている金属についての特定はない。このようなものでは、強度や腐食性を考慮すれば、めっき鋼板が考えられる。しかしながら、一般的に知られるめっき鋼板を用いた場合、締結バンドを加工する際に母材を切断して形成するため切断端面部が露出し、その部位が腐食するため耐食性に劣る。すなわち、めっき鋼板を用いた場合、切断やプレスした際にめっきが剥がれ、その剥がれた部位が酸化する（錆びる）ことになる。また、締結バンドを加工後にめっき処理や塗装処理を施した場合、コストが高くなると共に、係合孔に突起を係合させるタイプの締結バンドでは、その接触部のめっきまたは塗装が剥がれ、耐食性に劣ることになる。
そこで、本発明は、必要なシール性、防錆性、及び耐食性を確保できるとともに、低コスト化を図ることが可能な等速自在継手用ブーツの締結バンドを提供する。
本発明の等速自在継手用ブーツの締結バンドは、めっき層を施した鋼板を母材に用いた締結バンドであって、前記めっき層は、溶け出した成分によってめっき剥離部位に保護被膜を形成する自己修復機能を有するものである。
等速自在継手用ブーツの締結バンドによれば、めっき層は自己修復機能を有するのであって、めっき層から溶け出した成分によって形成される保護被膜にてめっき剥離部位を覆うことができる。
亜鉛－アルミニウム－マグネシウム合金めっき鋼板を母材に用いるものが好ましい。この場合、アルミニウム－マグネシウムが溶け出すことになり、保護被膜として、アルミニウム－マグネシウムを含む緻密な亜鉛系保護被膜となる。
この場合、アルミニウムを４．０～１４．０質量％、マグネシウムを１．０～１０．０質量％とし、残りの成分を亜鉛とすることができ、また、アルミニウムとマグネシウムとの含有量を１５質量％以下として、亜鉛を８５質量％以上とすることができる。
両端部が重ね合わされてリング状に丸められる帯状部材からなり、帯状部材の重なり部の外側部位に係合孔が設けられるとともに、帯状部材の重なり部の内側部位に前記係合孔と係合する突起が設けられ、かつ、帯状部材の一部に締付け用耳部を設けたものとできる。
両端部が重ね合わされてリング状に丸められる帯状部材からなり、帯状部材の一端側に係合爪及び第１工具爪を設けるとともに、帯状部材の一端側に係合孔及び第２工具爪を設け、帯状部材をリング状に丸めて両端部を重ね合わせた状態から、前記第１工具爪と第２工具爪とを近接させることにより、縮径させて、係合爪を係合孔に係合させるものであってもよい。
使用する鋼板の機械的性質が、引張強度２７０ＭＰａ以上でかつ破断時伸び３０％以上であるのが好ましい。引張強度２７０ＭＰａ未満かつ破断時伸び３０％未満であれば、等速自在継手用ブーツを締付けた際に、その締付力によって破断するおそれがある。
本発明では、切断端面部や係合接触部位において、めっき層が剥離した場合に、めっき層から溶け出した成分によって形成される保護被膜にてこの外部に露出した切断端面部や係合接触部位を覆うことができ、優れた防錆性及び耐食性を示すことになる。
特に、アルミニウムを４．０～１４．０質量％、マグネシウムを１．０～１０．０質量％とし、残りの成分を亜鉛とすれば、アルミニウムとマグネシウムを含む緻密な亜鉛系保護被膜がめっき剥離部分を覆うことになる。
締付バンドとして、加締め突起（締付け耳部）を有するいわゆるオメガバンド、係合孔に突起を係合させる引掛けバンド等の既存の種々の形態のものとすることができ、使用時に特殊な装着方法を採用する必要がなく、従来の締付バンドと同様の装着方法にて装着できる。
鋼板の機械的性質が、引張強度２７０ＭＰａ以上でかつ破断時伸び３０％以上とすることによって、この締付バンドにて等速自在継手用ブーツを締め付けた際に、安定した締付力によって、等速自在継手用ブーツを固定することができる。
以下本発明の実施の形態を図１Ａ～図６Ｃに基づいて説明する。図５は、本発明に係る図１Ａ及び図１Ｂに示す等速自在継手用ブーツの締結バンドを用いたドライブシャフトである。このドライブシャフトは、固定式等速自在継手５１と、摺動式等速自在継手５２と、これらの等速自在継手を連結するシャフト５０とを備える。この図例では、固定式等速自在継手５１にバーフィールド型等速自在継手を用い、摺動式等速自在継手５２にトリポード型等速自在継手を用いている。
固定式等速自在継手５１は、軸方向に延びる複数のトラック５３が内球面５４に形成された外側継手部材５５と、軸方向に延びる複数のトラック５６が外球面５７に形成された内側継手部材５８と、外側継手部材５５のトラック５３と内側継手部材５８のトラック５６との間に介在してトルクを伝達する複数のボール５９と、外側継手部材５５の内球面５４と内側継手部材５８の外球面５７との間に介在してボール５９を保持するケージ６０とを備えている。
摺動式等速自在継手５２は、内周に軸線方向に延びる三本の溝６１を設けると共に各溝６１の内側壁に互いに対向するローラ案内面６１ａを設けた外側継手部材６２と、半径方向に突出した３つの脚軸６３を備えた内側継手部材としてのトリポード部材６４と、前記脚軸６３に回転自在に支持されると共に外側継手部材の溝６１に転動自在に挿入されたトルク伝達手段としてのローラ６５とを備える。この場合、ローラ６５は脚軸６３の外径面に周方向に沿って配設される複数のころ６６を介して外嵌されている。なお、トリポード部材６４は、ボス部６７と、このボス部６７から径方向に伸びる前記脚軸６３とからなる。
シャフト５０は、その両端部に雄スプライン５０ａ、５０ｂが形成され、一方の雄スプライン５０ａが固定式等速自在継手５１の内側継手部材５８に嵌入され、他方の雄スプライン５０ｂが摺動式等速自在継手５２のトリポード部材６４に嵌入される。内側継手部材５８の軸心孔７１に雌スプライン７２が形成され、シャフト５０の一方の雄スプライン５０ａが内側継手部材５８の軸心孔７１に嵌入されて、雌スプライン７２に噛合する。また、シャフト５０の他方の雄スプライン５０ｂがトリポード部材６４のボス部６７の軸心孔７３に嵌入されて、この軸心孔７３の雌スプライン７４に噛合する。
そして、固定式等速自在継手５１には外側継手部材５５の開口部を密封するためのブーツ８０Ａが付設され、摺動式等速自在継手５２には外側継手部材６２の開口部を密封するためのブーツ８０Ｂが付設されている。ブーツ８０、８０Ｂは、大径の取付部８０ａと、小径の取付部８０ｂと、大径の取付部８０ａと小径の取付部８０ｂとを連結する屈曲部を構成する蛇腹部８０ｃとからなる。ブーツ８０Ａ、８０Ｂの大径の取付部８０ａは外側継手部材５５，６２の開口部側の外径面に形成されるブーツ装着部８５、８５で締結バンド８２（８２Ａ、８２Ｂ）により締め付け固定され、その小径の取付部８０ｂはシャフト５０の所定部位（ブーツ装着部８６、８６）で締結バンド８３（８３Ａ、８３Ｂ）により締め付け固定されている。
締結バンド８２（８３）としては、図１Ａから図４に示す種々のタイプのものを用いることができる。図１Ａ及び図１Ｂに示す第１の締結バンド８２（８３）は、両端部が重ね合わされてリング状に丸められる帯状部材９０からなる。そして、帯状部材９０の重なり部の外側部位９０ａに係合孔９１を設けるとともに、帯状部材９０の重なり部の内側部位９０ｂに前記係合孔９１と係合する突起９２を設けている。また、帯状部材９０の一部に締付け用耳部９３を設けている。
このため、図１Ａに示すように、リング状に丸めた状態において、耳部９３を図１Ｂに示すように、加締めることによって、リング状に丸めた帯状部材９０が縮径し、係合孔９１に突起９２が係合し、大径の取付部８０ａと小径の取付部８０ｂを締め付けた状態で等速自在継手５１、５２の外側継手部材５５、６２やシャフト５０に装着できる。
図２Ａ及び図２Ｂと図３Ａ及び図３Ｂに示す締結バンド８２（８３）は、第２の締結バンドを示し、両端部が重ね合わされてリング状に丸められる帯状部材１００からなり、帯状部材１００の一端部１００ａに係合爪１０１及び第１工具爪１０２を設けるとともに、帯状部材１００の他端部１００ｂに係合孔１０３及び第２工具爪１０４を設けたものである。
図３Ａに示すように、帯状部材１００をブーツにリング状に巻回して帯状部材１００の一端部と他端部とを重ね合わせた状態から、図３Ｂに示すように、第一の工具爪１０２と第二の工具爪１０４とを工具（図示せず）で強制的に近接させることにより係合爪１０１を係合孔１０３に嵌め込んでそれぞれの周縁部に係止させることでブーツ８２、８３を締め付けて等速自在継手５１、５２の外側継手部材５５、６２やシャフト５０に固定するようにしている。
また、図４に示す締結バンドは、いわゆる円環バンド１０５であり、円環状の帯を繋ぎ合わせたものである。
そして、本願発明では、締結バンドとして、図６Ａ～図６Ｃに示すように、めっき層１１０を施した鋼板１１１を母材に用いた。すなわち、図１Ａ及び図１Ｂに示す締結バンドでは帯状部材９０にめっき層を施した鋼板１１１を用い、図２Ａ～図３Ｂに示す締結バンドでは帯状部材１００にめっき層を施した鋼板１１１を用い、図４に示す締結バンドでは、繋ぎあわせる円環状の帯にめっき層を施した鋼板１１１を用いた。
めっき層１１０にめっき剥離部位（切断端面部等）が形成された場合、図６Ａに示すように、酸化して錆１１３が発生する。しかしながら、めっき層１１０では、図６Ｂ及び図６Ｃに示すように、溶け出した成分によって切断端面部（めっき剥離部位）に保護被膜１１２を形成するものである。このように、このめっき層１１０は、自己修復性を具備するものである。ここで、めっき剥離部位とは、締結バンドを加工する際に母材を切断した切断端面部、プレスした際にめっきが剥がれた部位、また、係合孔に突起を係合させるタイプでは突起が係合孔に接触する接触部位、等である。
このため、本発明では、切断端面部及び係合接触部位等のめっき剥離部位において、めっき層１１０から溶け出した成分によって形成される保護被膜にてこの外部に露出しためっき剥離部位を覆うことができ、優れた防錆性及び耐食性を示すことになる。
めっき層１１０は、例えば、亜鉛にアルミニウム及びマグネシウムを添加したものであるＺＡＭ(日新製鋼株式会社の登録商標)で構成されている。すなわち、ＪＩＳ Ｇ ３３１６に規定する質量分率で、５．０％から１３.０％のアルミニウム、２．０％から４．０％のマグネシウム、その他元素の合計１．０％以下及び残部亜鉛からなるめっき浴において、両面等厚の溶融めっきを行った鋼板及び鋼帯（以下，板及びコイルという。）を用いることができる。
すなわち、めっき層１１０は、亜鉛－アルミニウム－マグネシウム合金であり、本願発明では、アルミニウムを４．０～１４．０質量％、マグネシウムを１．０～１０．０質量％とし、残りの成分を亜鉛としている。また、アルミニウムとマグネシウムとの含有量を１５質量％以下として、亜鉛を８５質量％以上とするのが好ましい。
アルミニウムを４．０～１４．０質量％、マグネシウムを１．０～１０．０質量％とし、残りの成分を亜鉛とすれば、アルミニウムとマグネシウムを含む緻密な亜鉛系保護被膜が切断端面部を覆うことになる。このため、極めて優れた防錆性及び耐食性を示すことになる。アルミニウムとマグネシウムとの含有量を１５質量％以下として、亜鉛を８５質量％以上とすることによって、亜鉛系保護被膜を安定して形成することができる。
なお、めっき層に、シリコン、チタン、ボロン等を含有していてもよい。この場合、シリコンは０．３質量％以下とし、チタンは０．１質量％以下とし、ボロン０．０５質量％以下とするのが好ましい。
めっき層に含まれるマグネシウムは、めっき層の最表層にマグネシウムを含む亜鉛系腐食生成物を形成させ、めっき層中のアルミニウムとともにめっき層の腐食速度を減少させる効果がある。この作用は、マグネシウムを含む亜鉛系腐食生成物が長期間安定にめっき層上に存在し、耐食性を劣化させる酸化亜鉛の形成が抑制されることによるものである。
めっき層中の亜鉛，マグネシウムがマグネシウムを含む亜鉛系腐食生成物を形成するのに対し、めっき層中のアルミニウムは固着性の極めて強い亜鉛－アルミニウム系腐食生成物を形成し、耐食性の向上に寄与する。また、アルミニウムをめっき層中に含有させることでめっき層の凝固組織に亜鉛／アルミニウム／Ｚｎ2Ｍｇ三元共晶が出現する。この三元共晶組織は亜鉛／Ｚｎ2Ｍｇ二元共晶組織より組織が微細であるため、耐食性およびめっき層硬さの観点からも三元共晶組織の方が好ましい。
チタン、ボロン等を含有させることによって、Ｔｉ、Ｂの添加により表面外観を害するＺｎ11Ｍｇ2相の生成を抑制し、めっき層中に晶出するＺｎ－Ｍｇ系金属間化合物を実質的にＺｎ2Ｍｇのみにすることができる。具体的には、Ｔｉを０．００１質量％以上含有させると効果的にＺｎ11Ｍｇ2相の生成を抑制することができる。しかし、Ｔｉが０．１質量％を超えるとめっき層中にＴｉ－Ａｌ系析出物が成長し、めっき層に凹凸（プツ）が生じ、外観を損ねるようになる。好ましくは、０．００２質量％以上とするのが良い。また、Ｂを０．００１質量％以上含有させると効果的にＺｎ11Ｍｇ2相の生成を抑制することができる。しかし、Ｂが０．０５質量％を超えるとめっき層中にＴｉ－Ｂ系析出物、ＡｌＢ系析出物が成長し、めっき層に凹凸が生じ、外観を損ねるようになる。好ましくは、０．００１質量％以上とするのが良い。また、シリコンは、めっき層と素地鋼との界面におけるＡｌ－Ｆｅ合金層の成長を抑制する作用がある。この場合、シリコンとしては０．３質量％以下とするのが好ましい。
鋼板の機械的性質として、引張強度２７０ＭＰａ以上でかつ破断時伸び３０％以上とするのが好ましい。このように、設定することによって、この締付バンドにて等速自在継手用ブーツを締め付けた際に、安定した締付力によって、等速自在継手用ブーツを固定することができる。
締付バンド８２（８３）として、加締め突起（締付け耳部９３）を有するいわゆるオメガバンド、係合孔１０３に突起１０１を係合させる引掛けバンド等の既存の種々の形態のものとすることができ、使用時に特殊な装着方法を採用する必要がなく、従来の締付バンドと同様の装着方法にて装着できる。
めっき層１１０を形成した後に、後処理として、無機系、有機系、リン酸処理等のクロムフリーの被膜成分による化成処理を行うのが好ましい。このような化成処理を行うことによって、耐食性がさらに向上し、疵付防止などの加工性、塗装後密着性が向上する、特に、無機系の被膜成分が、耐食性や加工性に対して優れる。
以上、本発明の実施形態につき説明したが、本発明は前記実施形態に限定されることなく種々の変形が可能であって、等速自在継手用ブーツとしては、クロロプレンゴム、ウレタンゴム、塩素化ポリエチレンゴム、アクリルエチレンゴム、シリコーンゴム等のゴムブーツであっても、ポリエステル系などの熱可塑性エラストマー等の樹脂ブーツであってもよい。
また、材料として、ＺＡＭ材に限るものではなく、他の亜鉛めっき鋼板を用いることができる。すなわち、めっき層に含まれる亜鉛（Ｚｎ）が鉄（Ｆｅ）よりもイオン化傾向が大きいため、水中などの腐食環境下において、Ｆｅよりも先にＺｎが溶け出すことで、原板であるＦｅの腐食を防止するものであればよい。めっき処理の方法として、例えば、電気めっきや無電解めっき等を種々の従来の公知公用に方法を採用することができる。
等速自在継手として、ドライブシャフトに用いても、プロペラシャフトに用いられる等速自在継手であってもよい。また、固定式等速自在継手として、ツェッパ型やバーフィールド型に限らずアンダーカットフリー型であってもよく、摺動式等速自在継手として、トリポード型に限らず、ダブルオフセット型、クロスグルーブ型等であってもよい。また、トリポード型等速自在継手の場合、シングルローラタイプであっても、ダブルローラタイプであってもよい。
９０ 帯状部材
９１ 係合孔
９２ 突起
９３ 耳部
１００ 帯状部材
１０１ 係合爪
１０２、１０４ 工具爪
１０３ 係合孔
１０５ 円環バンド
１１０ めっき層
１１１ 鋼板
１１２ 保護被膜
９１ 係合孔
９２ 突起
９３ 耳部
１００ 帯状部材
１０１ 係合爪
１０２、１０４ 工具爪
１０３ 係合孔
１０５ 円環バンド
１１０ めっき層
１１１ 鋼板
１１２ 保護被膜
Claims (7)
- めっき層を施した鋼板を母材に用いた締結バンドであって、
前記めっき層は、溶け出した成分によってめっき剥離部位に保護被膜を形成する自己修復機能を有することを特徴とする等速自在継手用ブーツの締結バンド。 - 亜鉛－アルミニウム－マグネシウム合金めっき鋼板を母材に用いたことを特徴とする請求項１に記載の等速自在継手用ブーツの締結バンド。
- アルミニウムを４．０～１４．０質量％、マグネシウムを１．０～１０．０質量％とし、残りの成分を亜鉛としたことを特徴とする請求項２に記載の等速自在継手用ブーツの締結バンド。
- アルミニウムとマグネシウムとの含有量を１５質量％以下として、亜鉛を８５質量％以上としたことを特徴とする請求項３に記載の等速自在継手用ブーツの締結バンド。
- 両端部が重ね合わされてリング状に丸められる帯状部材からなり、帯状部材の重なり部の外側部位に係合孔が設けられるとともに、帯状部材の重なり部の内側部位に前記係合孔と係合する突起が設けられ、かつ、帯状部材の一部に締付け用耳部を設けたことを特徴とする請求項１～請求項４のいずれか１項に記載の等速自在継手用ブーツの締結バンド。
- 両端部が重ね合わされてリング状に丸められる帯状部材からなり、帯状部材の一端側に係合爪及び第１工具爪を設けるとともに、帯状部材の一端側に係合孔及び第２工具爪を設け、帯状部材をリング状に丸めて両端部を重ね合わせた状態から、前記第１工具爪と第２工具爪とを近接させることにより、縮径させて、係合爪を係合孔に係合させることを特徴とする請求項１～請求項４のいずれか１項に記載の等速自在継手用ブーツの締結バンド。
- 使用する鋼板の機械的性質が、引張強度２７０ＭＰａ以上でかつ破断時伸び３０％以上であることを特徴とする請求項１～請求項６のいずれか１項に記載の等速自在継手用ブーツの締結バンド。
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| CN201680029699.1A CN107636321B (zh) | 2015-05-27 | 2016-04-27 | 等速万向联轴器用保护罩的紧固带 |
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| KR102186001B1 (ko) * | 2019-10-24 | 2020-12-04 | 김은경 | 지리정보의 변화를 도화하는 공간영상 도화시스템 |
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2016
- 2016-04-27 CN CN201680029699.1A patent/CN107636321B/zh not_active Expired - Fee Related
- 2016-04-27 WO PCT/JP2016/063191 patent/WO2016190042A1/ja active Application Filing
- 2016-04-27 EP EP16799750.1A patent/EP3306115B1/en active Active
- 2016-04-27 US US15/572,604 patent/US10364833B2/en active Active
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| JP2003176890A (ja) * | 1991-02-22 | 2003-06-27 | Hans Oetiker Ag Mas & Apparatefab | 高強度クランプ構造体 |
| JPH08159108A (ja) * | 1994-11-30 | 1996-06-18 | Ntn Corp | ブーツ用の締付バンド |
| JP2005290551A (ja) * | 2004-03-08 | 2005-10-20 | Nisshin Steel Co Ltd | 成形加工後の皮膜密着性に優れた化成処理鋼板 |
| JP2012237333A (ja) * | 2011-05-10 | 2012-12-06 | Ntn Corp | ブーツバンド |
| JP2013036071A (ja) * | 2011-08-05 | 2013-02-21 | Jfe Steel Corp | 引張強度４４０ＭＰａ以上の加工性に優れた高強度溶融亜鉛めっき鋼板およびその製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3306115A4 (en) | 2019-02-20 |
| EP3306115B1 (en) | 2021-03-03 |
| US10364833B2 (en) | 2019-07-30 |
| CN107636321B (zh) | 2019-10-15 |
| JP6576689B2 (ja) | 2019-09-18 |
| EP3306115A1 (en) | 2018-04-11 |
| US20180135668A1 (en) | 2018-05-17 |
| CN107636321A (zh) | 2018-01-26 |
| JP2016223464A (ja) | 2016-12-28 |
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