WO2017110531A1 - 異材接合構造体 - Google Patents
異材接合構造体 Download PDFInfo
- Publication number
- WO2017110531A1 WO2017110531A1 PCT/JP2016/086767 JP2016086767W WO2017110531A1 WO 2017110531 A1 WO2017110531 A1 WO 2017110531A1 JP 2016086767 W JP2016086767 W JP 2016086767W WO 2017110531 A1 WO2017110531 A1 WO 2017110531A1
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- WIPO (PCT)
- Prior art keywords
- dissimilar material
- rivet
- joint structure
- structure according
- material joint
- Prior art date
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Images
Classifications
-
- 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
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/04—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of riveting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/02—Riveting procedures
- B21J15/025—Setting self-piercing rivets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/14—Riveting machines specially adapted for riveting specific articles, e.g. brake lining machines
- B21J15/147—Composite articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/16—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded
- B23K11/20—Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded of different metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/22—Spot welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/60—Riveting or staking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/016—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of aluminium or aluminium alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/05—Interconnection of layers the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/08—Interconnection of layers by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- 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
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/08—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of welds or the like
Definitions
- the present invention relates to a dissimilar material joint structure.
- Patent Documents 1 and 2 disclose a technique of spot welding with a steel material by driving a rivet into a light alloy material and caulking it.
- Patent Document 3 discloses a technique in which a pilot hole is made in an aluminum-based metal material and bonded while being pressurized with a spot welding electrode.
- Patent Document 4 discloses a technique in which a rivet is pushed into an upper member while being rotated, and friction welding is performed at the tip of a rivet shaft (pin).
- the rivet and the member to be joined at the rivet tip are joined with the same kind of metal (for example, steel materials).
- the rivet 503 fixed to the steel material 501 is inclined, and the hole 507 penetrating the light alloy material 505 or the resin material is expanded in the pulling direction.
- the light alloy material 505 and the resin material may break.
- such a problem is solved, and further improvement in the strength of the member is required while satisfying the weight reduction.
- the present invention has been made in view of the above matters, and an object of the present invention is to provide a dissimilar material joint structure capable of improving the dissimilar material joint strength while satisfying weight reduction.
- the dissimilar material joint structure of the present invention is a dissimilar material joint structure in which a plurality of plate materials of different material types are laminated and fixed with rivets
- the plate member includes a first member and a second member in which one end surfaces of the first member and the third member are disposed to overlap each other on the surface of the first member opposite to the second member.
- the rivet includes a shaft portion penetrating the first member and the third member and having a tip joined to the second member, and a head remaining on the surface of the third member without being inserted through the third member.
- the dissimilar material bonded structure is preferably provided in a state where the rivet is caulked and fixed to at least one of the first member and the third member.
- at least one of the first member and the third member is an aluminum alloy material.
- the dissimilar-material joining structure body Preferably, the said junction part contains the adhesive bond layer which joined the said 1st member and the said 3rd member.
- the first member and the third member are made of the same kind of metal material
- the joining portion includes a welded portion obtained by joining the first member and the third member.
- the dissimilar material bonded structure is preferably characterized in that the third member is formed by laminating a plurality of plate materials. Further, the dissimilar material bonded structure is preferably formed by folding the end of the first member of the third member, The joining portion includes a folded portion of the first member that is folded back.
- the dissimilar material joint strength can be improved while satisfying the weight reduction.
- FIG. 3 is a sectional view taken along line III-III in FIG. 2. It is the perspective view which looked at the rivet shown in FIG. 1 from the diagonal front end side of the axis
- FIG. 1 is a perspective view of a dissimilar material bonded structure according to a first embodiment of the present invention.
- a plurality of plate materials having different material types are stacked and fixed with rivets.
- the plate member includes a first member 11 and a second member 13 in which one end surfaces thereof are overlapped with each other, and a third member 15 disposed on the surface of the first member 11 opposite to the second member 13. Have.
- the first member 11, the second member 13, and the third member 15 are joined by a rivet 17.
- the rivet 17 is made of the same material as the second member 13 and has a shaft portion 19 and a head portion 21.
- the shaft portion 19 penetrates the third member 15 and the first member 11, and the tip is joined to the second member 13 by welding.
- the head 21 remains on the surface of the third member 15 without inserting the third member 15, and sandwiches the third member 15 and the first member 11 with the second member 13.
- FIG. 2 is a plan view of the dissimilar material bonded structure shown in FIG.
- the first member 11 and the third member 15 are joined by the joining portion 23.
- the joint portion 23 is located on the side toward the other end of the second member 13 from the penetrating position of the rivet 17 in the overlapping region of the first member 11 and the third member 15 (see FIG. 2). It is provided in the region S on the right side).
- the 1st member 11 and the 2nd member 13 can be comprised by combining a light metal and resin suitably.
- the first member 11 and the second member 13 can be configured by a combination of light metal and light metal, light metal and resin, or resin and resin.
- Examples of the light metal include aluminum, aluminum alloy materials (JIS standard 2000 series, 3000 series, 4000 series, 5000 series, 6000 series or 7000 series), magnesium, magnesium alloy materials, or metal materials combining them. It is done.
- CFRP carbon fiber reinforced plastic
- fiber reinforced PP polypropylene
- CFRP carbon fiber reinforced plastic
- CFRP polypropylene
- GFRP glass fiber reinforced plastic
- GMT glass long fiber reinforced plastic
- BFRP boron fiber reinforced plastic
- AFRP aramid fiber reinforced plastic
- DFRP polyethylene fiber reinforced plastic
- ZFRP Zylon reinforced Plastic
- thermoplastic resins such as polyamide, polyethylene, polystyrene, ABS resin, vinyl chloride resin, and fluororesin can also be used.
- the second member 13 is made of steel. Specific grades include high-tensile steel, galvanized steel, and stainless steel. As the high-tensile steel material, a hot stamp (hot press) material or the like can also be used.
- the rivet 17 is preferably a forged product having a head portion 21 and a shaft portion 19 from the viewpoints of productivity and attachment properties of the rivet 17.
- the member to be welded is a steel material
- the rivet 17 is preferably made of the same steel material in order to improve the joint strength. If the rivet 17 and the second member 13 are the same steel material, the welded portion 24 at the tip of the rivet 17 can be firmly joined without generating an intermetallic compound.
- a steel material used for the rivet 17 soft steel, stainless steel, high-tensile steel, or the like can be appropriately employed depending on the application.
- FIG. 4 is a perspective view of the rivet shown in FIG. 1 as viewed from the oblique tip side of the shaft.
- an insulating layer (a film having a higher resistance than that of steel) is formed on the entire surface excluding the proximal end surface 25 of the head 21 and the distal end surface of the shaft portion 19 (including the end surface of the protrusion 27).
- the insulating layer is formed of a paint having a higher resistivity than steel materials such as DISGO (registered trademark), Raffle (registered trademark), Geomet (registered trademark), polyester resin precoat, silicone elastomer, and the like.
- the main body portion (the portion excluding the insulating layer) of the rivet 17 is formed from a material by forging.
- FIG. 5A to FIG. 5C are process diagrams showing a fixing procedure using rivets.
- the dissimilar material bonded structure 100 is preferably provided in a state in which the rivet 17 is caulked and fixed to at least one of the first member 11 and the third member 15.
- the rivet 17 for example, methods disclosed in Japanese Patent Laid-Open No. 7-214338 and Japanese Patent Laid-Open No. 2010-207898 can be employed.
- FIGS. 5A and 5B the third member 15 and the first member 11 are punched out at once by the shaft portion 19 of the rivet 17 to perform caulking.
- the rivet 17 is joined to the second member 13 by resistance welding or the like.
- the rivet 17 has a head portion 21 having a diameter larger than that of the shaft portion 19, and there may be a circumferential groove 29 (see FIG. 4) around the shaft portion of the head portion 21. May have a part.
- the material type of the rivet 17 may be any material that can be welded to the third member 15 (melt welding, friction welding) using mild steel, tool steel, or the like.
- FIG. 6 is a cross-sectional view showing an example of a method for fixing the joint.
- the first member 11 and the third member 15 are configured by the same metal material.
- the first member 11 and the third member 15 are sandwiched between a pair of electrodes 35A and 35B, and a pulse current is applied from the electrodes 35A and 35B.
- a nugget (welded portion) 31 by resistance spot welding is formed at the interface between the first member 11 and the third member 15. This weld 31 is the joint 23 described above.
- the joint portion 23 is preferably arranged on a straight line passing through the center of the rivet 17 and along the pulling direction.
- the joints 23 are arranged in a one-to-one positional relationship with the rivets 17, but the number of the rivets 17 and the joints 23 and the positional relationship are not limited to this.
- first member 11 and the second member 13 are metal members
- other methods such as resistance spot welding, laser spot welding, friction stir spot welding, laser welding, friction joining, etc.
- Adhesion using an adhesive material may be used.
- at least one of the 1st member 11 and the 3rd member 15 is a resin material, it can join using an adhesive agent.
- FIG. 7A is a cross-sectional view before the tensile load of the dissimilar material bonded structure is applied
- FIG. 7B is a cross-sectional view after the tensile load of the dissimilar material bonded structure is applied
- FIG. 8 is a perspective view of the dissimilar material bonded structure shown in FIG.
- FIG. 9 is a perspective view of a dissimilar material joint structure as a reference example in which the third member 15 and the first member are not joined at the joint.
- the rivet through-holes 33 of the first member 11 and the third member 15 bonded by the bonding portion 23 are used.
- the side wall of this is in contact with the shaft portion 19.
- the rivet 17 is inclined in the pulling direction of the first member 11 when the shaft portion 19 is pressed against the side wall of the rivet through hole 33.
- the first member 11 is substantially halved because the reaction force from the shaft part 19 received by a single conventional member is also shared by the side wall of the rivet through hole 33 of the third member 15 in contact with the shaft part 19. The For this reason, even if the 1st member 11 is loaded with the tensile load equivalent to the past, the expansion (plastic deformation) of the pull direction of the rivet through-hole 33 is suppressed.
- the third member 15 a force in the direction of tilting the rivet 17 is applied from the joint portion 23, while a reaction force is applied to the rivet through hole 33 from the shaft portion 19. As a result, stress concentration occurs between the rivet through hole 33 of the third member 15 and the joint 23.
- the third member 15 is deformed into a mountain shape in a direction in which the space between the rivet through hole 33 and the joint portion 23 rises due to the stress concentration.
- the inclination of the rivet 17 is relaxed by the bending deformation of the third member 15. As a result, even if a strong tensile load is applied to the dissimilar material bonded structure 100, the inclination of the rivet 17 is reduced, and the bonding strength of the dissimilar material bonded structure 100 is improved.
- the dissimilar material bonded structure 100 includes the third member 15 as compared with the case where the third member 15 warps like the dissimilar material bonded structure 500 as a reference example in which the bonding portion 23 illustrated in FIG. 9 does not exist. This can contribute to improvement of the strength of the joint structure.
- the rivet 17 is caulked and fixed to at least one of the first member 11 and the third member 15, so that the third member 15, the first member 11, and the second member 13 are clamped by the rivet 17.
- High joint strength can be obtained by the synergistic effect of the structure, the rivet 17 and the caulking and fixing of the first member 11 and the third member 15.
- At least one of the first member 11 and the third member 15 is made of an aluminum alloy material. Therefore, each member can be joined with high strength, and the weight can be reduced as compared with the case where it is a steel material.
- the first member 11 and the third member 15 are formed of the same metal material, and the bonding portion 23 includes the welded portion 31. Therefore, the junction 23 is firmly connected without generating an intermetallic compound. Can be configured.
- the third member 15 is formed of a single plate material, but is not limited thereto.
- the third member 15 may be composed of a plurality of two or more plate materials, and may be a combination of materials having various characteristics and strengths.
- the dissimilar material bonded structure 100 adds various functions such as decoration, corrosion resistance, and insulation to the third member 15 on the surface side by laminating the third member 15 made of a plurality of plates. You can also.
- the joining portion 23 is located on the other end side of the second member 13 with respect to the penetrating position of the rivet 17 in the overlapping region of the first member 11 and the third member 15, that is, the first member. 11 is provided in at least a part of the region S on the opposite side to the one end of the second member 13 on the side to be joined.
- FIG. 10 is a sectional view showing a rivet fixing structure which is a modification of the first configuration example.
- the dissimilar material bonded structure 100A as a method of attaching the rivet 17, the first member 11 and the third member 15 are previously drilled with a through hole 34, and the rivet 17 is inserted into the through hole 34 so that the second member is inserted. 13 may be welded. According to the dissimilar material bonded structure 100A of this modified example, even when the total thickness of both the first member 11 and the third member 15 exceeds the press-fitting limit of the rivet 17, the second member 13 can be reliably bonded. .
- FIG. 11 is a cross-sectional view of the dissimilar material joint structure of the second configuration example.
- the rivet 37 and the second member 13 are fixed by friction welding. That is, the rivet 37 is rotated by inserting the hexagon key 41 into the hexagon hole 39. At the same time, the rivet 37 is pushed into the third member 15 and the first member 11, and the rivet shaft tip and the second member 13 are friction welded. According to the dissimilar material bonded structure 200, as a result of the frictional heat generated at the rivet shaft tip and the second member 13, the contact portion is heated to such an extent that it melts. After the rotation of the rivet 37 is stopped, the melted contact portion is solidified and stays in both materials, whereby the rivet 37 and the second member 13 are firmly connected.
- FIG. 12 is a cross-sectional view of the dissimilar material joint structure of the third configuration example.
- the bonding portion 23 includes an adhesive layer 43 in which the first member 11 and the third member 15 are bonded.
- the joint portion 23 since the joint portion 23 includes the adhesive layer 43 that joins the first member 11 and the third member 15, a large-scale facility such as a resistance spot welder or a laser welder is required. Instead, the first member 11 and the third member 15 can be easily fixed. Moreover, the metal and resin which are difficult to weld can be fixed easily.
- FIG. 13 is a cross-sectional view of the dissimilar material joint structure of the fourth configuration example.
- the third member 15 in the dissimilar material bonded structure 100 of the first structural example described above is formed by hem processing for folding the end portion 11a of the first member 180 degrees.
- the folded portion 11b that is turned back functions as the above-described joint portion.
- the first member 11 forms the third member by the end portion 11a, and the bent portion 11b becomes the bonded portion.
- the bonding strength of each member can be further increased.
- the above-described joint portion may be newly formed at the end portion 11a of the folded first member 11. In that case, the joint strength can be further improved.
- FIG. 14 is a cross-sectional view of a rivet that can be used for a dissimilar material bonded structure.
- a rivet 45 shown in the figure may be used for the dissimilar material bonded structure 100.
- the upper outer peripheral portion 47 of the head 21 is inclined toward the shaft portion, and the head 21 is thinned as a whole.
- An enlarged diameter portion 49 is formed at the tip of the shaft portion 19.
- a second shaft portion 51 protrudes from the distal end surface of the enlarged diameter portion 49.
- the rivet 45 can be reduced in weight by thinning the head 21. Further, since the upper outer peripheral portion 47 of the head portion 21 is inclined, the level difference from the light alloy material after caulking is reduced.
- FIG. 15 is a cross-sectional view of another rivet that can be used in the dissimilar material bonded structure.
- a rivet 53 shown in FIG. The rivet 53 is different from the rivet 17 in that the diameter of the shaft portion 55 becomes larger at the tip portion and a shallow undercut is formed.
- the other points are the same as those of the rivet 17.
- the surface of the shaft portion 55 is slightly inclined but the caulking joining between the rivet 53 and the light alloy material is strengthened.
- FIG. 16A and FIG. 16B are plan views respectively showing modifications of the dissimilar material bonded structure having another example of the bonded portion.
- the example in which the joint portion 23 is disposed in a one-to-one positional relationship with the rivet 17 on a straight line passing through the center of the rivet 17 and along the pulling direction is illustrated in FIG. 16A.
- a plurality of pairs of rivets 17 and joints 23 may be arranged in parallel in a direction orthogonal to the pulling direction.
- one joining portion 23 may be provided in an intermediate portion between the pair of rivets 17. According to this configuration, it is possible to obtain the above-described effect of the third member 15 in which the warpage is restricted by the joint portion 23 while reducing the work of forming the joint portion 23.
- the present invention is not limited to the above-described embodiments, and those skilled in the art can make changes and applications based on combinations of the configurations of the embodiments, descriptions in the specification, and well-known techniques. This is also the scope of the present invention, and is included in the scope for which protection is sought.
- a dissimilar material joint structure in which a plurality of plate materials of different material types are laminated and fixed with rivets
- the plate member includes a first member and a second member in which one end surfaces of the first member and the third member are disposed to overlap each other on the surface of the first member opposite to the second member.
- the rivet includes a shaft portion penetrating the first member and the third member and having a tip joined to the second member, and a head remaining on the surface of the third member without being inserted through the third member.
- the first member and the third member A dissimilar material joint structure, characterized in that a joint for joining is formed.
- the reaction force from the shaft portion of the rivet is shared by the third member.
- the first member is prevented from expanding in the pulling direction of the rivet through hole.
- the inclination of the rivet is relaxed by the deformation of the third member.
- the dissimilar-material joining structure can make the 3rd member contribute to the intensity
- each member can be bonded with high strength, and the weight can be reduced as compared with the case of using a steel material.
- the joint includes an adhesive layer that joins the first member and the third member.
- the first member and the third member can be easily fixed without requiring large-scale equipment such as a resistance spot welder or a laser welder dedicated to aluminum.
- the metal and resin which are difficult to weld can be fixed easily.
- the first member and the third member are made of the same metal material, and the joining portion includes a welded portion joining the first member and the third member.
- the third member is formed by folding an end of the first member,
- the dissimilar material bonded structure according to any one of (1) to (5), wherein the bonding portion includes a bent portion of the folded first member.
- the first member is folded back as the third member, and the folded portion is used as a bonded portion, so that the number of parts is reduced, and the first member and the third member are By being integrated, the rigidity is further increased and the bonding strength can be further increased.
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- Plasma & Fusion (AREA)
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- Insertion Pins And Rivets (AREA)
Abstract
Description
特許文献1~4に開示されている技術は、いずれもリベットとリベット先端で接合される部材とを同種の金属(例えば鋼材同士)で接合している。
前記板材は、互いの一端面同士が重ねられた第1部材及び第2部材と、前記第1部材の前記第2部材とは反対側の面に重なって配置された第3部材とを有し、
前記リベットは、前記第1部材及び前記第3部材を貫通して先端が前記第2部材に接合された軸部と、前記第3部材を挿通せずに前記第3部材の表面上に残る頭部とを有し、
前記第1部材と前記第3部材との重なり領域のうち、前記リベットの貫通位置よりも前記第2部材の他端部に向かう側の少なくとも一部に、前記第1部材と前記第3部材とを接合する接合部が形成されたことを特徴とする。
この異材接合構造体は、好ましくは、前記リベットが、前記第1部材と前記第3部材の少なくとも一方にかしめ固定された状態で設けられる。
また、異材接合構造体は、好ましくは、前記第1部材と前記第3部材の少なくとも一方が、アルミニウム合金材である。
また、異材接合構造体は、好ましくは、前記接合部が、前記第1部材と前記第3部材とを接合した接着剤層を含むことを特徴とする。
また、異材接合構造体は、好ましくは、前記第1部材と前記第3部材が、同じ材種の金属材料で構成され、
前記接合部は、前記第1部材と前記第3部材とを接合した溶接部を含むことを特徴とする。
また、異材接合構造体は、好ましくは、前記第3部材が、複数の板材が積層されてなることを特徴とする。
また、異材接合構造体は、好ましくは、前記第3部材が、前記第1部材の端部を折り返して形成され、
前記接合部は、折り返された前記第1部材の折り曲げ部を含むことを特徴とする。
図1は本発明の第1実施形態における異材接合構造体の斜視図である。
本実施形態における異材接合構造体100は、材種の異なる複数枚の板材が積層され、リベットで固定されている。板材は、互いの一端面同士が重ねられた第1部材11及び第2部材13と、第1部材11の第2部材13とは反対側の面に重なって配置された第3部材15とを有する。
第1部材11と第3部材15とは、接合部23により接合される。この接合部23は、詳細を後述するが、第1部材11と第3部材15との重なり領域のうち、リベット17の貫通位置よりも第2部材13の他端部に向かう側(図2の右側)の領域Sに設けられる。
第1部材11と第2部材13とは、軽金属と樹脂とを適宜に組み合わせることで構成できる。例えば、第1部材11と第2部材13とを、軽金属と軽金属、軽金属と樹脂、樹脂と樹脂という組み合わせで構成できる。
リベット17は、頭部21の基端側端面25と軸部19の先端面(突起27の端面を含む)を除いた表面全体に絶縁層(鋼材より高い抵抗の皮膜)が形成されている。絶縁層は、例えば、ディスゴ(登録商標)、ラフレ(登録商標)、ジオメット(登録商標)、ポリエステル系樹脂プレコート、シリコーンエラストマ等の鋼材より高い抵抗率を有する塗料で形成される。なお、絶縁層は、少なくとも第1部材11,第3部材15に打ち込んだときに、リベット17と、軽金属からなる第1部材11,第3部材15とが接する箇所に形成すればよい。これにより、異種金属間のガルバニック腐食を抑制できる。リベット17の本体部分(絶縁層を除く部分)は、素材から鍛造加工により成形される。
異材接合構造体100は、リベット17が、第1部材11と第3部材15の少なくとも一方にかしめ固定された状態で設けられることが好ましい。リベット17は、例えば日本国特開平7-214338号や日本国特開2010-207898号に開示される方法を採用できる。この場合、図5A,図5Bに示すように、第3部材15と第1部材11とをリベット17の軸部19で一度に打ち抜いてかしめを行う。その後、図5Cに示すように、リベット17が第2部材13と抵抗溶接等により接合される。
本構成例において、異材接合構造体100は、第1部材11と第3部材15が、同じ材種の金属材料で構成される。第1部材11と第3部材15は、一対の電極35A,35Bに挟まれて、電極35A,35Bからパルス電流が印加される。これにより、第1部材11と第3部材15との界面には、抵抗スポット溶接によるナゲット(溶接部)31が形成される。この溶接部31が上述した接合部23となる。
図7Aは異材接合構造体の引張り荷重が加わる前の断面図、図7Bは異材接合構造体の引張り荷重が加えられた後の断面図、図8は図7Bに示した異材接合構造体の斜視図、図9は第3部材15と第1部材とが接合部で接合されない参考例としての異材接合構造体の斜視図である。
構成にできる。
異材接合構造体100Aは、リベット17の取付方法として、予め第1部材11と第3部材15とに貫通穴34を穿設しておき、この貫通穴34にリベット17を挿通して第2部材13と溶接してもよい。
この変形例の異材接合構造体100Aによれば、第1部材11と第3部材15の双方の合計厚みが、リベット17の圧入限界を超える場合でも、第2部材13との確実な接合が行える。
第2構成例の異材接合構造体200は、リベット37と第2部材13とが摩擦溶接により固定される。すなわち、リベット37は、六角穴39に六角キー41が挿入されて回転される。同時に、リベット37は、第3部材15、第1部材11に押し込まれて、リベット軸先端と第2部材13とが摩擦溶接される。
この異材接合構造体200によれば、リベット軸先端と第2部材13とに生じる摩擦熱の結果として、接触部が融解する程度にまで加熱される。リベット37の回転停止後、融解した接触部が固化して両材料内に留まることで、リベット37と第2部材13とが堅固に接続される。
第3構成例の異材接合構造体300は、接合部23が、第1部材11と第3部材15とを接合した接着剤層43を含む。
この異材接合構造体300によれば、接合部23が第1部材11と第3部材15とを接合した接着剤層43を含むので、抵抗スポット溶接機やレーザ溶接機等の大掛かりな設備を必要とせずに、第1部材11と第3部材15とを容易に固定できる。また、溶接が困難な金属と樹脂とを容易に固定できる。
第4構成例の異材接合構造体400は、前述の第1構成例の異材接合構造体100における第3部材15が、第1部材の端部11aを180°折り返すヘム加工により形成される。そして、この折り返された折り曲げ部11bが上述した接合部として機能する。
この異材接合構造体400によれば、第1部材11が、その端部11aにより第3部材を形成し、折り曲げ部11bが接合部となる。これにより、部品点数が削減され、剛性を更に高めることができる。よって、各部材の接合強度を一層強められる。なお、折り曲げ部11bの他に、折り返された第1部材11の端部11aに、上述した接合部を新たに形成してもよい。その場合、接合強度の更なる向上が図れる。
異材接合構造体100には、同図に示すリベット45が用いられてもよい。このリベット45は、頭部21の上部外周部47が軸部側に傾斜し、頭部21が全体として薄肉化されている。軸部19の先端には拡径部49が形成される。拡径部49の先端面には第2軸部51が突出して形成される。
このリベット45によれば、頭部21を薄肉化したことによりリベット45を軽量化できる。また、頭部21の上部外周部47が傾斜していることにより、かしめ接合後の軽合金材との段差が小さくなる。
異材接合構造体100には、同図に示すリベット53が用いられてもよい。このリベット53は、軸部55の径が先端部ほど大きくなり、浅いアンダーカットが形成されている点で、リベット17と異なる。その他の点ではリベット17と同様である。
このリベット53によれば、軸部55の表面がわずかであるが傾斜していることにより、リベット53と軽合金材のかしめ接合が強化される。
なお、上記の構成例において、接合部23は、リベット17の中心を通り、引張り方向に沿う直線上に、リベット17と一対一の位置関係で配置される例を説明したが、図16Aに示すように、一対のリベット17と接合部23とを、引張り方向に直交する方向に、複数対、平行に並べて配置してもよい。
(1) 材種の異なる複数枚の板材が積層され、リベットで固定された異材接合構造体であって、
前記板材は、互いの一端面同士が重ねられた第1部材及び第2部材と、前記第1部材の前記第2部材とは反対側の面に重なって配置された第3部材とを有し、
前記リベットは、前記第1部材及び前記第3部材を貫通して先端が前記第2部材に接合された軸部と、前記第3部材を挿通せずに前記第3部材の表面上に残る頭部とを有し、
前記第1部材と前記第3部材との重なり領域のうち、前記リベットの貫通位置よりも前記第2部材の他端部に向かう側の少なくとも一部に、前記第1部材と前記第3部材とを接合する接合部が形成されたことを特徴とする異材接合構造体。
この異材接合構造体によれば、リベットの軸部からの反力が、第3部材によって分担される。このため、第1部材は、リベット貫通穴の引張り方向の拡大が抑制される。また、リベットは、第3部材の変形により傾きが緩和される。また、異材接合構造体は、第3部材を、接合構造の強度増大に寄与させることができる。
この異材接合構造体によれば、リベットによる第3部材、第1部材及び第2部材の挟持構造と、リベットと、第1部材及び第3部材とのかしめ固定との相乗効果により高い接合強度を得ることができる。
この異材接合構造体によれば、各部材を高強度に接合でき、しかも鋼材である場合に比べて軽量化が図れる。
この異材接合構造体によれば、アルミニウム専用の抵抗スポット溶接機やレーザ溶接機等の大掛かりな設備を必要とせずに、第1部材と第3部材とを容易に固定できる。また、溶接が困難な金属と樹脂とを容易に固定できる。
この異材接合構造体によれば、第1部材と第3部材とが同種の金属(例えばアルミ)となるため、溶接部での金属間化合物が発生せず、強固な接合部を得ることができる。
この異材接合構造体によれば、第3部材が、種々な特性、強度の材種を組み合わせて積層される。これにより、表面側となる第3部材に、例えば装飾性、耐食性、絶縁性等の種々の機能を付加できる。
前記接合部は、折り返された前記第1部材の折り曲げ部を含むことを特徴とする(1)乃至(5)のいずれか一つに記載の異材接合構造体。
この異材接合構造体によれば、第3部材として第1部材を折り返して形成し、この折り返し部を接合部とすることで、部品点数を削減し、しかも、第1部材と第3部材とが一体であることにより剛性が更に高くなり、接合強度を一層強められる。
11a 端部
11b 折り曲げ部
13 第2部材
15 第3部材
17 リベット
19 軸部
21 頭部
23 接合部
31 溶接部
43 接着剤層
100,100A,200,300,400 異材接合構造体
Claims (15)
- 材種の異なる複数枚の板材が積層され、リベットにより固定された異材接合構造体であって、
前記板材は、互いの一端面同士が重ねられた第1部材及び第2部材と、前記第1部材の前記第2部材とは反対側の面に重なって配置された第3部材とを有し、
前記リベットは、前記第1部材及び前記第3部材を貫通して先端が前記第2部材に接合された軸部と、前記第3部材を挿通せずに前記第3部材の表面上に残る頭部とを有し、
前記第1部材と前記第3部材との重なり領域のうち、前記リベットの貫通位置よりも前記第2部材の他端部に向かう側の少なくとも一部に、前記第1部材と前記第3部材とを接合する接合部が形成されたことを特徴とする異材接合構造体。 - 前記リベットは、前記第1部材と前記第3部材の少なくとも一方にかしめ固定された状態で設けられていることを特徴とする請求項1に記載の異材接合構造体。
- 前記第1部材と前記第3部材の少なくとも一方は、アルミニウム合金材であることを特徴とする請求項1又は請求項2に記載の異材接合構造体。
- 前記接合部は、前記第1部材と前記第3部材とを接合した接着剤層を含むことを特徴とする請求項1又は請求項2に記載の異材接合構造体。
- 前記接合部は、前記第1部材と前記第3部材とを接合した接着剤層を含むことを特徴とする請求項3に記載の異材接合構造体。
- 前記第1部材と前記第3部材は、同じ材種の金属材料で構成され、
前記接合部は、前記第1部材と前記第3部材とを接合した溶接部を含むことを特徴とする請求項1又は請求項2に記載の異材接合構造体。 - 前記第3部材は、複数の板材が積層されてなることを特徴とする請求項1又は請求項2に記載の異材接合構造体。
- 前記第3部材は、複数の板材が積層されてなることを特徴とする請求項3に記載の異材接合構造体。
- 前記第3部材は、複数の板材が積層されてなることを特徴とする請求項4に記載の異材接合構造体。
- 前記第3部材は、複数の板材が積層されてなることを特徴とする請求項5に記載の異材接合構造体。
- 前記第3部材は、複数の板材が積層されてなることを特徴とする請求項6に記載の異材接合構造体。
- 前記第3部材は、前記第1部材の端部を折り返して形成され、
前記接合部は、折り返された前記第1部材の折り曲げ部を含むことを特徴とする請求項1又は請求項2に記載の異材接合構造体。 - 前記第3部材は、前記第1部材の端部を折り返して形成され、
前記接合部は、折り返された前記第1部材の折り曲げ部を含むことを特徴とする請求項3に記載の異材接合構造体。 - 前記第3部材は、前記第1部材の端部を折り返して形成され、
前記接合部は、折り返された前記第1部材の折り曲げ部を含むことを特徴とする請求項4に記載の異材接合構造体。 - 前記第3部材は、前記第1部材の端部を折り返して形成され、
前記接合部は、折り返された前記第1部材の折り曲げ部を含むことを特徴とする請求項6に記載の異材接合構造体。
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US16/061,144 US20180354231A1 (en) | 2015-12-25 | 2016-12-09 | Different-material joining structure |
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EP (1) | EP3395548A4 (ja) |
JP (1) | JP6411993B2 (ja) |
KR (1) | KR102059325B1 (ja) |
CN (1) | CN108136690A (ja) |
WO (1) | WO2017110531A1 (ja) |
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DE102018203647A1 (de) * | 2018-03-12 | 2019-09-12 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Herstellen eines stoffschlüssig gefügten Bauteilverbunds mit wenigstens einem Gussbauteil und Karosserie mit solchem Bauteilverbund |
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- 2016-12-09 CN CN201680057786.8A patent/CN108136690A/zh active Pending
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
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US10035216B2 (en) * | 2015-08-27 | 2018-07-31 | GM Global Technology Operations LLC | Method of joining multiple components and an assembly thereof |
US20190126384A1 (en) * | 2017-11-02 | 2019-05-02 | GM Global Technology Operations LLC | Method and apparatus for joining components with friction pins |
US10478916B2 (en) * | 2017-11-02 | 2019-11-19 | GM Global Technology Operations LLC | Method and apparatus for joining components with friction pins |
DE102018203647A1 (de) * | 2018-03-12 | 2019-09-12 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Herstellen eines stoffschlüssig gefügten Bauteilverbunds mit wenigstens einem Gussbauteil und Karosserie mit solchem Bauteilverbund |
WO2020256031A1 (ja) * | 2019-06-17 | 2020-12-24 | 日本製鉄株式会社 | 接合継手、及び自動車用部材 |
JPWO2020256031A1 (ja) * | 2019-06-17 | 2020-12-24 | ||
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JP7238983B2 (ja) | 2019-06-17 | 2023-03-14 | 日本製鉄株式会社 | 接合継手、及び自動車用部材 |
WO2021033647A1 (ja) * | 2019-08-20 | 2021-02-25 | 日本製鉄株式会社 | 接合継手、自動車用部材、及び接合継手の製造方法 |
JPWO2021033647A1 (ja) * | 2019-08-20 | 2021-02-25 | ||
JP7156541B2 (ja) | 2019-08-20 | 2022-10-19 | 日本製鉄株式会社 | 接合継手、自動車用部材、及び接合継手の製造方法 |
JP7508030B1 (ja) | 2022-11-24 | 2024-07-01 | Jfeスチール株式会社 | 摩擦エレメント接合方法 |
Also Published As
Publication number | Publication date |
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EP3395548A4 (en) | 2019-08-14 |
CN108136690A (zh) | 2018-06-08 |
KR20180088675A (ko) | 2018-08-06 |
JP2017114055A (ja) | 2017-06-29 |
EP3395548A1 (en) | 2018-10-31 |
KR102059325B1 (ko) | 2019-12-26 |
US20180354231A1 (en) | 2018-12-13 |
JP6411993B2 (ja) | 2018-10-24 |
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