WO2023101009A1 - クラッシュボックス - Google Patents
クラッシュボックス Download PDFInfo
- Publication number
- WO2023101009A1 WO2023101009A1 PCT/JP2022/044552 JP2022044552W WO2023101009A1 WO 2023101009 A1 WO2023101009 A1 WO 2023101009A1 JP 2022044552 W JP2022044552 W JP 2022044552W WO 2023101009 A1 WO2023101009 A1 WO 2023101009A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pair
- crimping
- mounting plates
- joining
- holes
- Prior art date
Links
- 238000002788 crimping Methods 0.000 claims abstract description 241
- 238000003466 welding Methods 0.000 claims abstract description 167
- 238000005452 bending Methods 0.000 claims abstract description 10
- 238000005304 joining Methods 0.000 claims description 99
- 238000004519 manufacturing process Methods 0.000 claims description 46
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 33
- 239000008397 galvanized steel Substances 0.000 claims description 33
- 230000002787 reinforcement Effects 0.000 claims description 19
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 22
- 239000003517 fume Substances 0.000 description 22
- 229910052725 zinc Inorganic materials 0.000 description 22
- 239000011701 zinc Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 19
- 230000003014 reinforcing effect Effects 0.000 description 17
- 239000011265 semifinished product Substances 0.000 description 17
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 239000000047 product Substances 0.000 description 9
- 238000003825 pressing Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/24—Arrangements for mounting bumpers on vehicles
- B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
- B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
Definitions
- the front side mounting plates 12A and 12B are provided with narrow reinforcing ribs 25 that are bent substantially at right angles toward the inner sides (vehicle rear side) of the opposite side edges.
- the front side mounting plates 12A and 12B are arranged such that the adjacent side edges of the front mounting plates 12A and 12B extend from the vehicle width direction outer side (the left side in FIG. 4) of the bent piece 23A to the vehicle width direction inner side (the right side in FIG. 4) of the bent piece 23B. ) is provided with a wide reinforcing rib 26 that is bent inward (vehicle rear side) at a substantially right angle.
- the width of each reinforcing rib 26 in the vehicle front-rear direction can be a substantially constant width that is substantially the same as the height of the bent pieces 23A, 23B projecting from the front mounting plates 12A, 12B.
- Through holes 27 are formed in the front mounting plates 12A and 12B at positions on the outside in the vehicle width direction of the center in the vehicle width direction and at positions on the inner edges in the vehicle width direction.
- a nut (not shown) is attached to the rear end of each through-hole 27 by arc welding, spot welding, laser welding, or the like, and is integrally assembled to the bumper reinforcement 2 by bolting.
- the rear mounting plates 13A, 13B extend to approximately the center of the flanges 21D, 21E of the half bodies 11A, 11B in the vehicle width direction.
- the rear mounting plates 13A and 13B extend beyond the main body 11 in the vertical direction.
- the vertical width of the rear mounting plates 13A and 13B can be approximately twice the height from the flange portions 21D and 21E to the bottom portion 21C of the corresponding half-split bodies 11A and 11B.
- the upper rear mounting plate 13A has an outer upper edge in the vehicle width direction that is slanted downward and outward.
- the height from the respective bent pieces 31A, 31B of the rear mounting plates 13A, 13B to the reinforcing ribs 33 is equal to the vehicle vertical direction of the bottom surface portions 21C of the half bodies 11A, 11B. from the outer surface of each of the flange portions 21D and 21E to the outer surface of each of the flange portions 21D and 21E in the vertical direction of the vehicle.
- the bent pieces 23A and 23B of the front mounting plate 12B are spot-welded to the outer surface of the bottom surface 21C of the half body 11B.
- the bent pieces 31A to 31C of the rear mounting plate 13B are spot-welded to the bottom surface 21C of the half body 11B and the outer surface of the recess 21F.
- the lower half-finished product 38 (see FIG. 6) is assembled by welding the front side mounting plate 12B and the rear side mounting plate 13B so as to cover the front side end portion and the rear side end portion of the half body 11B.
- the joints by spot welding are indicated by X marks.
- the pair of flange portions 21D and 21E of the half bodies 11A and 11B are arranged at a plurality of locations in the vehicle front-rear direction. For example, at two locations, instead of spot welding, they can be joined by a plurality of crimp pins 53 for flange joining.
- each stepped portion 53B is inserted into the joining through hole 55. It is set to protrude from the hole 55 (for example, approximately 2 mm to 5 mm).
- the rear side mounting plate 13A arranged on the upper side is brought into contact with the rear side end portion of the half body 11A, and the respective bent pieces 31A and 31B are moved to the vehicle width of the bottom portion 21C of the half body 11A. It abuts against the outer surface of both outer edges. Also, the bent piece 31C of the rear mounting plate 13A is brought into contact with the outer surface of the recess 21F formed in the bottom surface portion 21C. Further, both side edges in the vehicle width direction of the rear mounting plate 13A are opposed to substantially central portions in the vehicle width direction of the respective flange portions 21D and 21E of the half body 11A.
- the bent pieces 23A and 23B of the front mounting plate 12A are spot-welded to the outer surface of the bottom surface portion 21C of the half body 11A.
- the bent pieces 31A to 31C of the rear mounting plate 13A are spot-welded to the bottom surface 21C of the half body 11A and the outer surface of the recess 21F.
- the semi-finished product 37 (see FIG. 6) is assembled by welding the front side mounting plate 12A and the rear side mounting plate 13A so as to cover the front end portion and the rear end portion of the half body 11A.
- the joints by spot welding are indicated by x marks.
- the rear mounting plate 13B arranged on the lower side is brought into contact with the rear end portion of the half body 11B, and the bent pieces 31A and 31B are attached to the bottom portion 21C of the half body 11B. It is brought into contact with the outer side surfaces of both laterally outer edge portions. Also, the bent piece 31C of the rear mounting plate 13B is brought into contact with the outer surface of the recess 21F formed in the bottom surface portion 21C. Further, both side edges in the vehicle width direction of the rear mounting plate 13B are opposed to substantially central portions in the vehicle width direction of the respective flange portions 21D and 21E of the half body 11B.
- the bent pieces 23A and 23B of the front mounting plate 12B are spot-welded to the outer surface of the bottom surface portion 21C of the half body 11B.
- the bent pieces 31A to 31C of the rear mounting plate 13B are spot-welded to the bottom surface 21C of the half-split body 11B and the outer surface of the recess 21F.
- the semi-finished product 38 (see FIG. 6) is assembled by welding the front side mounting plate 12B and the rear side mounting plate 13B so as to cover the front side end portion and the rear side end portion of the half body 11B.
- the half-split body 11B constituting the semi-finished product 38 is arranged so that the opening side faces upward, and each jointing portion formed on the pair of flange portions 21D and 21E of the half-split body 11B is arranged.
- One step portion 53 B of the crimping pin 53 is inserted through the through hole 55 .
- the other step of the caulking pin 53 is inserted into each joining through hole 55 formed in the pair of flange portions 21D and 21E of the half-split body 11A.
- the pair of flange portions 21D and 21E of the half bodies 11A and 11B are overlapped with each other so that the portion 53B is inserted therethrough.
- the crush box 51 It is possible to prevent zinc fumes from being generated from the surface of the steel sheet, eliminate the need for a process for removing zinc fumes, and reduce manufacturing costs.
- a pair of front side mounting plates 12A, 12B, a pair of rear side mounting plates 13A, 13B, and a pair of half bodies 11A, 11B are formed by spot welding instead of spot welding.
- each stepped portion 63B is inserted through the joining through hole 73. It is set to protrude from the hole 73 (for example, approximately 2 mm to 5 mm).
- the crimping pin 65 includes a shaft portion 65A formed in the shape of a shaft that is long in the vertical direction, and a pair of steps formed coaxially with a smaller outer diameter on both ends of the shaft portion 65A in the axial direction. and a portion 65B.
- the outer diameter of the shaft portion 65A is larger than the inner diameter of the first crimping through hole 68 formed in the bottom surface portion 21C of the pair of half bodies 11A and 11B (for example, the outer diameter of the first crimping through hole 68 is larger than the inner diameter of the first crimping through hole 68). 2 mm to 7 mm larger than the inner diameter).
- first caulking through holes 68 are formed in the rear side edges of the bottom surfaces 21C of the pair of half-split bodies 11A and 11B.
- a pair of second crimping through-holes 69 through which the stepped portions 65B formed at both ends of the crimping pin 65 can be inserted are formed at positions facing the .
- the bent pieces 31C of the pair of rear mounting plates 13A and 13B face the first caulking through holes 68 formed in the rear side edges of the recesses 21F of the pair of half-split bodies 11A and 11B.
- a second crimping through-hole 69 through which the stepped portion 66B formed at both ends of the crimping pin 66 can be inserted is formed at a position.
- the reinforcing ribs 33 of the pair of rear mounting plates 13A, 13B are provided with crimping pins 65, 66 at positions facing the second crimping through holes 69 formed in the bending pieces 31A to 31C in the vertical direction.
- Three supporting through-holes 71 are formed through which the respective shaft portions 65A and 66A can be inserted.
- the crimping pin 66 includes a shaft portion 66A formed in the shape of a shaft that is long in the vertical direction, and a pair of steps that are coaxially formed at both ends of the shaft portion 66A with a small outer diameter. and a portion 66B.
- the outer diameter of the shaft portion 66A is larger than the inner diameter of the first crimping through hole 68 formed in the bottom surface portion 21C of the pair of half bodies 11A and 11B (for example, the outer diameter of the first crimping through hole 68 is larger than the inner diameter of the first crimping through hole 68). 3 mm to 7 mm larger than the inner diameter).
- the outer diameter of the shaft portion 66A is set to be substantially the same as the outer diameter of the shaft portion 65A of the crimping pin 65. As shown in FIG.
- the length of the shaft portion 66A corresponds to the length of the shaft portion 66A, which is the length of the pair of flange portions 21D and 21E of the pair of half-split bodies 11A and 11B that are mutually superimposed and are joined together by a plurality of crimping pins 63. It is formed to have a length substantially equal to the distance between the recesses 21F.
- the length of the pair of stepped portions 66B is the total thickness of the plate thickness of the bottom portion 21C of the pair of half-split bodies 11A and 11B and the plate thickness of the bent piece 31C of the pair of rear mounting plates 13A and 13B. It is set to be larger than the height (for example, approximately 2 mm to 5 mm).
- FIG. 12 to 15 As shown in FIGS. 12 to 15, first, the half-split body 11B arranged on the lower side is arranged so that the opening side faces upward. Then, the front mounting plate 12B arranged on the lower side is brought into contact with the front end portion of the half body 11B, and the bent pieces 23A and 23B are attached to the bottom surface portion 21C of the half body 11B in the vehicle width direction. It is brought into contact with the outer surfaces of both outer edges.
- one end side of the shaft portion 65A of the crimping pin 65 is inserted into each of the pair of supporting through holes 71 formed in the reinforcing rib 26 of the front mounting plate 12B.
- the stepped portion 65B formed at the lower end portion of each shaft portion 65A is connected to the first through hole 68 for crimping formed in the bottom surface portion 21C and the second through hole for crimping formed in each of the bent pieces 23A and 23B. 69 to bring the lower end of the shaft portion 65A into contact with the inner surface of the bottom surface portion 21C.
- One of the stepped portions 63B of the crimping pin 63 is inserted into each of the joint through holes 73 formed in the pair of flange portions 21D and 21E of the half-split body 11B, and the disk portion 63A is inserted into each of the flange portions 21D and 21E. abut.
- the bent pieces 23A and 23B of the front mounting plate 12A and the bent pieces 31A to 31C of the rear mounting plate 13A are positioned on the bottom surface 21C and the outer surface of the recess 21F with respect to the half-split body 11A.
- the half body 11A with the opening facing downward is arranged directly above the half body 11B.
- the half-split body 11A, the front mounting plate 12A, and the rear mounting plate 13A with the opening facing downward are lowered integrally.
- the upper end side (the other end side) of the shaft portion 65A of the crimping pin 65 is inserted into each of the two supporting through holes 71 formed at both vehicle width direction end portions of the reinforcing rib 33 of the rear mounting plate 13B. do.
- the stepped portion 65B formed at the upper end portion of each shaft portion 65A is connected to the first through hole 68 for crimping formed in the bottom surface portion 21C and the second through hole for crimping formed in each of the bent pieces 31A and 31B. 69, and the upper end of the shaft portion 65A is brought into contact with the inner surface of the bottom portion 21C.
- a pair of overlapping flange portions 21D and 21E of each of the half bodies 11A and 11B is replaced with a crimping pin 53 for flange connection and each through hole for connection. It may be joined by bolting with a hexagon socket head bolt 83 and a nut 85 inserted through 55 .
- a hexagon socket head bolt 83 is inserted from above into each connecting through-hole 55 of a pair of overlapping flange portions 21D and 21E of each of the half bodies 11A and 11B, and bolted with a nut 85. to join.
- the crash box 81 is assembled.
- the pair of front side mounting plates 12A and 12B and the pair of rear side mounting plates 13A and 13B are mounted to the pair of half bodies 11A and 11B by spot welding.
- the pair of flange portions 21D and 21E of the bodies 11A and 11B are superimposed on each other so that they can be assembled in the same mounting direction by bolting with the hexagon socket head bolts 83 and nuts 85. As shown in FIG. As a result, it is possible to shorten the assembly time of the crash box 81 and reduce the manufacturing cost.
- the crash box 91 is disposed between the bumper reinforcement 2 and the side member 3L in such a posture that the axis of the body portion 92 constituting the tubular body is substantially parallel to the vehicle front-rear direction.
- 93B and a pair of rear side mounting plates 95A, 95B are integrally fixed to the bumper reinforcement 2 and the side member 3L by bolts (not shown) or the like.
- black circles indicate joints by spot welding. It should be noted that welding such as laser welding may be used instead of spot welding.
- a pair of half-split bodies 92A and 92B have substantially the same configuration as the half-split bodies 11A and 11B of FIGS.
- the half-split bodies 92A and 92B are press-formed from a steel plate so as to have a substantially hat-shaped cross section that is symmetrical in the vertical direction.
- an alloyed hot-dip galvanized steel sheet or a hot-dip galvanized steel sheet can be used, and the thickness can be about 1.0 mm to 1.6 mm, and the tensile strength can be about 590 MPa.
- the pair of half-split bodies 92A and 92B includes a bottom surface portion 21C (see FIG. 17) having a substantially trapezoidal shape in a plan view, and a pair of halves 92A and 92B extending from the edge of the bottom surface portion 21C and facing each other.
- a pair of vertical wall portions 21A and 21B, and a pair of flange portions 21D and 21E extending substantially parallel to the bottom portion 21C from the edges of the pair of vertical wall portions 21A and 21B, that is, the edges on the opening side of the hat shape. have.
- each crimping pin 63 is a thin plate (for example, about 1 mm to 3 mm thick) disc portion 63A and a pair of coaxially formed disc portions 63A having a small outer diameter at both ends in the axial direction of the disc portion 63A. and a stepped portion 63B.
- the side edges of the front mounting plates 93A and 93B on the inner side in the vehicle width direction extend inward in the vehicle width direction (for example, about 40 mm to 50 mm) from the vertical wall portions 21A on the inner side in the vehicle width direction of the half bodies 92A and 92B. ) is long.
- the opposite side edge portions of the pair of front mounting plates 93A and 93B are substantially perpendicular to the rear at two positions facing the bottom portions 21C on both sides in the vehicle width direction of the pair of half-split bodies 92A and 92B.
- a pair of mounting pieces 97C and 97D for caulking are provided which are substantially L-shaped when viewed from the side.
- the pair of crimping mounting pieces 97C and 97D are joined by crimping pins 65 to the outer surface of each bottom surface portion 21C.
- the length of the pair of stepped portions 65B is the sum of the plate thickness of the bottom portion 21C of the pair of half bodies 92A and 92B and the plate thickness of the crimping mounting pieces 97C and 97D of the pair of front side mounting plates 93A and 93B. It is set to be larger than the thickness (for example, approximately 2 mm to 5 mm). That is, when the stepped portion 65B is inserted through the third crimping through-hole 98 and the fourth crimping through-hole 99 and the shaft portion 65A contacts the inner surface of the bottom portion 21C, each stepped portion 65B It is set to protrude from the fourth caulking through-hole 99 (for example, about 2 mm to 5 mm).
- Each of the second supporting mounting pieces 105B is capable of inserting the shaft portion 65A of the crimping pin 65 at a position facing each of the third crimping through-holes 98 formed in the bottom portion 21C of the pair of half bodies 92A, 92B.
- 105 C of 2nd through-holes for a support are formed coaxially in the up-down direction.
- the flat plate portion 105A is formed with a through hole 105D through which the binding nut 103 is inserted from the rear side and the flange portion 103A contacts the rear end portion.
- the through holes 105D are formed at positions facing the nut insertion notches 102A and 102B of the pair of front mounting plates 93A and 93B.
- the lashing nut 103 is inserted through the through-hole 105D from the rear side in advance, and the collar portion 103A is joined to the flat plate portion 105A by arc welding, spot welding, laser welding, or the like.
- the flat plate portion 105A is formed with through holes 105E through which bolts (not shown) can be inserted, at positions facing the through holes 100 on the outer side in the vehicle width direction of the pair of front mounting plates 93A and 93B.
- the pair of rear mounting plates 95A and 95B decrease in height from the bottom surface portion 21C toward the outside in the vehicle width direction from the central portion in the vehicle width direction.
- the pair of rear side mounting plates 95A and 95B are configured such that the outer side portions from the substantially central portion in the vehicle width direction can contact the outer side surfaces of the rear side edge portions of the corresponding pair of half bodies 92A and 92B.
- the outside portion is bent toward the front side of the vehicle from the approximately central portion in the vehicle width direction, and is formed in a substantially crank shape in a plan view.
- the length of the pair of rear mounting plates 95A and 95B in the vehicle width direction extends from the position facing the base end of the flange portion 21D on the inner side in the vehicle width direction of the pair of half-split bodies 92A and 92B to the vehicle width of the bottom portion 21C. It is formed with a length equal to the distance to the side edge on the direction outer side.
- the vertical width of the pair of rear side mounting plates 95A and 95B is about 2/3 times the vertical height from the pair of flange portions 21D and 21E to the bottom portion 21C of the pair of half-split bodies 92A and 92B. width. Adjacent side edge portions of the pair of rear mounting plates 95A and 95B protrude in a horizontally long trapezoidal shape in a direction toward each other so as to come into contact with the outer surface of the recess 21G.
- the pair of rear side mounting plates 95A and 95B has mounting rib portions that are bent forward at approximately right angles from side edges on the inner side in the vehicle width direction to adjacent side edges. 107 are formed. As shown in FIGS. 17 and 20, each mounting rib portion 107 is provided at a position facing the bottom surface portion 21C of the pair of half-split bodies 92A and 92B and the inner edge portion of the recessed portion 21G in the vehicle width direction. It is formed to have a width dimension that allows spot welding to be performed on the bottom surface portion 21C and the recessed portion 21G that are in contact with each other.
- the front side edge of the brace plate 111 has a pair of vertical wall portions 21A when the brace plate 111 is arranged between the pair of flange portions 21D and 21E.
- 21B is provided with a narrow reinforcing rib 111B bent upward at a substantially right angle over the entire length thereof. Note that the reinforcing rib 111B may be bent downward at a substantially right angle.
- the pair of crimping mounting pieces 97C and 97D of the front side mounting plate 93A are brought into contact with the outer surface of the front end portion of each bottom surface portion 21C of the half-split body 92A, and the fourth crimping mounting pieces 97C and 97D are brought into contact with each other.
- the caulking through-hole 99 and the third caulking through-hole 98 of each bottom surface portion 21C are arranged so as to communicate with each other and positioned.
- the mounting rib portion 107 of the rear mounting plate 95A arranged on the upper side is arranged along the rear side edge portion of the half body 92A so as to abut on the bottom surface portion 21C and the outer surface of the recess 21G. position.
- the welding mounting piece 97B of the front side mounting plate 93A is joined to the outer surface of the recess 21G of the half body 92A by spot welding.
- the mounting rib portion 107 of the rear mounting plate 95A is joined to the bottom surface portions 21C of the half body 92A and the outer surface of the recess 21G by spot welding.
- the front side mounting plate 93A is mounted so as to cover the front end portion of the half body 92A
- the rear mounting plate 93A is mounted so as to protrude away from each other from the outer surface of the rear side edge of the half body 92A.
- a semi-finished product 113 (see FIG. 23) is assembled to which the plate 95A is attached.
- joints by spot welding are indicated by X marks.
- One of the stepped portions 63B of the crimping pin 63 is inserted into each of the joining through holes 73 formed in the pair of flange portions 21D and 21E of the half-split body 92B, and the disc portion 63A is inserted into each of the flange portions 21D and 21E. abut.
- a pair of mounting through-holes 111A formed at both ends in the longitudinal direction of the brace plate 111 are inserted into the disk portions 63A of the caulking pins 63 arranged on the rear side of the pair of flange portions 21D and 21E. do.
- the half-finished product 113 placed on the upper side is placed directly above the half-split body 92B that opens upward, with the opening side of the split-split body 92A facing downward. Then, the half-finished product 113 with the opening side of the half-split body 92A directed downward is lowered, and the third crimping through holes 98 formed in the front edge portions of the bottom surface portions 21C of the half-split body 92A are pushed downward. , the stepped portion 65B protruding from each second supporting through hole 105C on the upper side of the lashing nut mounting plate 105 is inserted.
- each shaft portion 65A is brought into contact with the inner surface of the bottom portion 21C of the half-split body 92A.
- the upper sides of the caulking pins 63 arranged on the pair of flange portions 21D and 21E of the half body 92B are inserted into the joining through holes 73 formed in the pair of flange portions 21D and 21E of the half body 92A. is inserted through the stepped portion 63B. Then, the upper end portion of the disk portion 63A of each crimping pin 63 is brought into contact with the pair of flange portions 21D and 21E of the half-split body 92A, and the pair of flange portions 21D and 21E of each of the half-split members 92A and 92B are brought into contact with each other. overlap each other.
- the front end of the crash box 91 is secured by the lashing nut mounting plate 105, which is arranged at the front end of the hollow cylindrical body formed by the pair of half-split bodies 92A and 92B and supported by the pair of crimping pins 65.
- Mechanical strength can be reinforced.
- the pair of front mounting plates 93A, 93B, the pair of rear mounting plates 95A, 95B, and the pair of half-split bodies 92A, 92B, which constitute the crash box 91 can be thinned to reduce manufacturing costs.
- the pair of half-split bodies 92A and 92B are overlapped with each other with the pair of flange portions 21D and 21E sandwiching the tension plate 111, and the crimping pins 63 inserted through both ends of the tension plate 111 are crimped. Joined by processing.
- the mechanical strength in the vehicle width direction at the rear end portion of the crash box 91 can be reinforced by the brace plate 111 arranged in the vehicle width direction.
- the pair of front mounting plates 93A, 93B, the pair of rear mounting plates 95A, 95B, and the pair of half-split bodies 92A, 92B, which constitute the crash box 91 can be thinned to reduce manufacturing costs.
- the pair of half-split bodies 92A and 92B are provided with a pair of third crimping through-holes through which the stepped portions 65B formed at both ends of the crimping pin 65 can be inserted at the front side edge portions of the respective bottom surface portions 21C. Holes 98 are not formed.
- a pair of fourth crimping through holes 99 through which the stepped portions 65B formed at both ends of the crimping pin 65 can be inserted are not formed in the crimping mounting pieces 97C and 97D of the pair of front side mounting plates 93A and 93B. Note that the nut insertion notch portions 102A and 102B of the pair of front mounting plates 93A and 93B may not be formed.
- the pair of front side mounting plates 93A and 93B includes a pair of welding mounting pieces 97B and crimping mounting pieces 97C and 97D that are connected to the corresponding recesses 21G and bottom surfaces of the pair of half bodies 92A and 92B. It is attached by spot welding to the outer surface of 21C. Thereby, the pair of front mounting plates 93A and 93B are mounted so as to cover the front end portions of the pair of half-split bodies 92A and 92B.
- black circles indicate joints by spot welding. It should be noted that welding such as laser welding may be used instead of spot welding.
- a bolt (not shown) inserted through the through-hole 100 is attached to the rear end of each through-hole 100 formed at a position outside the center of the pair of front mounting plates 93A and 93B in the vehicle width direction.
- Each screwed nut 101 is attached by arc welding, spot welding, or laser welding. Therefore, the crash boxes 121 are positioned outside the center in the vehicle width direction of the pair of front mounting plates 93A and 93B and at the rear end of each through hole 100 on the inner edge in the vehicle width direction. It is integrally attached to the bumper reinforcement 2 by bolting with each welded nut 101 .
- FIG. 25 the procedure for assembling the crash box 121 will be described with reference to FIG.
- the upper front mounting plate 93A is brought into contact with the front end portion of the half body 92A arranged so that the opening side faces downward.
- the bent piece 97A of the front mounting plate 93A is brought into contact with the inner surface of the vertical wall portion 21B on the outer side in the vehicle width direction, and the welding mounting piece 97B is attached to the outer surface of the front end portion of the concave portion 21G of the half body 92A. abut on.
- a pair of crimping mounting pieces 97C and 97D of the front side mounting plate 93A are placed in contact with the outer surface of the front end portion of each bottom portion 21C of the half-split body 92A for positioning.
- the mounting rib portion 107 of the rear mounting plate 95A arranged on the upper side is arranged along the rear side edge portion of the half body 92A so as to abut on the bottom surface portion 21C and the outer surface of the recess 21G. position.
- the welding attachment piece 97B of the front side mounting plate 93A is joined to the outer surface of the recess 21G of the half body 92A by spot welding, and the caulking attachment pieces 97C and 97D of the front side mounting plate 93A are split in half. It joins to the outer surface of each bottom surface portion 21C of the body 92A by spot welding. Also, the mounting rib portion 107 of the rear mounting plate 95A is joined to the bottom surface portions 21C of the half body 92A and the outer surface of the recess 21G by spot welding.
- the front side mounting plate 93A is mounted so as to cover the front end portion of the half body 92A, and the rear mounting plate 93A is mounted so as to protrude away from each other from the outer surface of the rear side edge of the half body 92A.
- a semi-finished product 113 (see FIG. 23) is assembled to which the plate 95A is attached.
- the half-split body 92B arranged on the lower side is arranged so that the opening side faces downward.
- the front side mounting plate 93B arranged on the lower side is brought into contact with the front side end portion of the half-split body 92B.
- the bent piece 97A of the front mounting plate 93B is brought into contact with the inner surface of the vertical wall portion 21B on the outer side in the vehicle width direction, and the welding mounting piece 97B is attached to the outer surface of the front end portion of the recess 21G of the half body 92B. abut on.
- a pair of crimping mounting pieces 97C and 97D of the front side mounting plate 93B are placed in contact with the outer surface of the front end of each bottom surface portion 21C of the half-split body 92B for positioning. Subsequently, the mounting rib portion 107 of the rear side mounting plate 95B arranged on the lower side is brought into contact with the outer side surfaces of the bottom portion 21C and the recessed portion 21G along the rear side edge portion of the half-split body 92B. Place and position.
- the welding attachment piece 97B of the front side mounting plate 93B is joined to the outer surface of the recess 21G of the half body 92B by spot welding, and the caulking attachment pieces 97C and 97D of the front side mounting plate 93B are split in half. It joins to the outer surface of each bottom surface portion 21C of the body 92B by spot welding. Also, the mounting rib portion 107 of the rear mounting plate 95B is joined to the bottom surface portions 21C of the half body 92B and the outer surface of the recess 21G by spot welding.
- the front side mounting plate 93B is mounted so as to cover the front end portion of the half body 92B, and the rear side mounting plate 93B is mounted so as to protrude away from each other from the outer surface of the rear side edge of the half body 92B.
- a semi-finished product 115 (see FIG. 23) is assembled to which the plate 95B is attached.
- the half-finished product 113 placed on the upper side is placed directly above the half-split body 92B that opens upward, with the opening side of the split-split body 92A facing downward. Subsequently, the half-finished product 113 with the opening side of the half-split body 92A directed downward is lowered, and the half-split body 92A is inserted into the joint through-holes 73 formed in the pair of flange portions 21D and 21E of the half-split body 92A.
- the stepped portion 63B on the upper side of each of the caulking pins 63 arranged on the pair of flange portions 21D and 21E of the body 92B is inserted.
- each crimping pin 63 is brought into contact with the pair of flange portions 21D and 21E of the half-split body 92A, and the pair of flange portions 21D and 21E of each of the half-split members 92A and 92B are brought into contact with each other. overlap each other.
- a pair of stepped portions 63B formed at both ends of each crimping pin 63 are crimped vertically by a crimping device (not shown) to join them.
- the crash box 121 is assembled as shown in FIG.
- the welding mounting pieces 97B of the pair of front mounting plates 93A and 93B, the crimping mounting pieces 97C and 97D, and the mounting rib portions of the pair of rear mounting plates 95A and 95B 107 is attached to the pair of half-split bodies 92A and 92B by spot welding, and the pair of flange portions 21D and 21E of the pair of half-split bodies 92A and 92B are overlapped with each other to form a plurality of caulking pins 63. It is possible to assemble in the same direction as the direction of attachment by caulking. As a result, it is possible to shorten the assembly time of the crash box 121 and reduce the manufacturing cost.
- the crush box 121 It is possible to prevent zinc fumes from being generated from the surface of the steel sheet, eliminate the need for a process for removing zinc fumes, and reduce manufacturing costs.
- the pair of half-split bodies 92A and 92B are overlapped with each other with the pair of flange portions 21D and 21E sandwiching the tension plate 111, and the crimping pins 63 inserted through both ends of the tension plate 111 are crimped. Bonded by processing. As a result, the mechanical strength in the vehicle width direction at the rear end portion of the crash box 121 can be reinforced by the brace plate 111 arranged in the vehicle width direction. As a result, the pair of front side mounting plates 93A and 93B, the pair of rear side mounting plates 95A and 95B, and the pair of half-split bodies 92A and 92B, which constitute the crash box 121, can be thinned to reduce manufacturing costs.
- a pair of overlapping flange portions 21D and 21E of each of the half-split bodies 92A and 92B replaces the caulking pin 63 for joining the flanges on the rear side. It is also possible to connect by bolting with a hexagon socket head bolt 133 and a nut 135 inserted through the through hole 73 .
- the semi-finished product 115 (see FIG. 23) is arranged so that the opening side of the half-split body 92B faces upward.
- One of the stepped portions 63B of the crimping pin 63 is inserted into the front connecting through-hole 73 of the connecting through-holes 73 (see FIG. 25) formed in the pair of flange portions 21D and 21E of the half-split body 92B. do.
- a pair of mounting through holes 111A formed at both ends in the longitudinal direction of the brace plate 111 are arranged substantially coaxially with the respective joining through holes 73 on the rear side of the pair of flanges 21D and 21E. Deploy.
- the half-finished product 113 placed on the upper side is placed directly above the half-split body 92B that opens upward, with the opening side of the split-split body 92A facing downward. Subsequently, the half-finished product 113 with the opening side of the half-split body 92A directed downward is lowered, and the front side of each joining through-hole 73 formed in the pair of flange portions 21D and 21E of the half-split body 92A is opened.
- the stepped portion 63B on the upper side of each of the crimping pins 63 arranged on the pair of flange portions 21D and 21E of the half-split body 92B is inserted into the through-hole 73 for joining.
- each crimping pin 63 is brought into contact with the pair of flange portions 21D and 21E of the half-split body 92A.
- both ends of the brace plate 111 are brought into contact with the pair of flanges 21D and 21E of the half body 92A, and the pair of flanges 21D and 21E of the half bodies 92A and 92B are overlapped with each other. .
- a hexagon socket head bolt 133 is inserted from below, and a nut 135 is used to fasten and join.
- the crash box 131 is assembled.
- caulking pins 63 arranged on the front side of the flanges 21D and 21E of the crash box 131, they may be joined by bolting with a pair of hexagon socket head bolts 133 and a pair of nuts 135. In that case, it is preferable to fasten the bolts by sandwiching a washer having a thickness approximately the same as that of the tension plate 111 between the joining through holes 73 on the front side of the flanges 21D and 21E.
- the welding mounting pieces 97B of the pair of front mounting plates 93A and 93B, the crimping mounting pieces 97C and 97D, and the mounting rib portions of the pair of rear mounting plates 95A and 95B 107 is attached to the pair of half-split bodies 92A and 92B by spot welding, and the pair of flange portions 21D and 21E of the pair of half-split bodies 92A and 92B are superimposed on each other to form a pair of caulking pins 63. It is possible to assemble in the same mounting direction by caulking and bolting with a pair of hexagon socket head bolts 133 and a pair of nuts 135 . As a result, it is possible to shorten the assembly time of the crash box 131 and reduce the manufacturing cost.
- the pair of front side mounting plates 93A and 93B, the pair of rear side mounting plates 95A and 95B, and the pair of half-split bodies 92A and 92B, which constitute the crash box 131, are made thin (for example, the plate thickness is about 0.8 mm to 1 mm). to some extent).
- the crush box 131 It is possible to prevent zinc fumes from being generated from the surface of the steel sheet, eliminate the need for a process for removing zinc fumes, and reduce manufacturing costs.
- the pair of half-split bodies 92A and 92B are superimposed on each other with the pair of flange portions 21D and 21E sandwiching the brace plate 111, and the pair of hexagonal holes inserted through both ends of the brace plate 111. It is joined by bolting with a bolt 133 and a pair of nuts 135 .
- the mechanical strength in the vehicle width direction at the rear end portion of the crash box 131 can be reinforced by the brace plate 111 arranged in the vehicle width direction.
- the pair of front mounting plates 93A and 93B, the pair of rear mounting plates 95A and 95B, and the pair of half-split bodies 92A and 92B that constitute the crash box 131 can be thinned to reduce manufacturing costs.
- each crash box 1, 51, 61, 81, 91, 121, 131 rotates (eg, 90 degrees or 180 degrees) about the axis of each body 11, 92 to reinforce the bumper. It may be provided between the bracket 2 and the side member 3L extending in the longitudinal direction of the vehicle.
- the pair of half-split bodies 92A and 92B need not form the joint through-holes 73 in the pair of flange portions 21D and 21E, respectively.
- the bracing plate 111 does not have to form the attachment through holes 111A at both ends in the longitudinal direction.
- circular or rectangular spacers made of a flat plate made of metal such as iron having a thickness approximately equal to that of the tension plate 111 are provided corresponding to the joining through holes 73 on the front side of the respective flange portions 21D and 21E. You may make it sandwich in the position where it does.
- the pair of front side mounting plates 93A and 93B, the pair of rear side mounting plates 95A and 95B, and the pair of half-split bodies 92A and 92B, which constitute the crash box 131, are made thin (for example, the plate thickness is about 0.8 mm to 1 mm). to some extent).
- the crush box 121 It is possible to prevent zinc fumes from being generated from the surface of the steel sheet, eliminate the need for a process for removing zinc fumes, and reduce manufacturing costs.
- the embodiment described above has at least the following effects.
- the pair of front mounting plates and the pair of rear mounting plates are attached to the front and rear ends of the pair of halves in the longitudinal direction of the vehicle by spot welding or caulking.
- the pair of half-split bodies are attached by spot welding, caulking, or bolting with the pair of flange portions superimposed on each other so as to form a cylindrical body.
- the mounting direction in which the pair of front side mounting plates and the pair of rear side mounting plates are mounted to the pair of half-split bodies and the mounting direction in which the pair of flange portions of the pair of half-split bodies are superimposed on each other are attached. assembled in the same direction.
- the pair of front mounting plates, the pair of rear mounting plates, and the pair of half-split bodies that constitute the crash box can be made thinner.
- the pair of front mounting plates, the pair of rear mounting plates, and the pair of halves are made of hot-dip galvanized steel plate or alloyed hot-dip galvanized steel plate, zinc fumes are generated from the surface of the crash box. can be prevented, and the manufacturing cost can be reduced by eliminating the zinc fume removal process.
- the pair of front mounting plates, the pair of rear mounting plates, and the pair of half-split bodies can be assembled in the same direction by spot welding, crimping, or bolt fastening, so that the assembling process of the crash box can be efficiently performed.
- the pair of front side mounting plates and the pair of rear side mounting plates have a plurality of bent pieces joined to the outer surface of the bottom portion of the half-split body by spot welding.
- the pair of half-split bodies are joined by spot welding with the respective pair of flange portions superimposed on each other.
- the pair of front side mounting plates and the pair of rear side mounting plates are attached to the pair of half-split bodies by spot welding in the mounting direction, and the pair of flange portions of the pair of half-split bodies are overlapped with each other and spot welded. It can be assembled in the same direction as the mounting direction by which it is mounted. As a result, it is possible to shorten the assembly time of the crash box and reduce the manufacturing cost.
- the pair of front side mounting plates are joined by spot welding to the outer surface of the bottom portion of the half body to which the plurality of spot welding mounting pieces correspond.
- the pair of rear side mounting plates are joined by spot welding to the outer surface of the bottom portion of the half body corresponding to the mounting rib portions bent forward over the entire width.
- the pair of half-split bodies are joined by crimping or bolting with crimping pins or bolts for flange joining inserted through the plurality of joining through-holes, with the pair of flange portions superimposed on each other.
- the pair of front side mounting plates and the pair of rear side mounting plates are attached to the pair of half-split bodies by spot welding in the mounting direction, and the pair of flange portions of the pair of half-split bodies are superimposed on each other. It can be assembled in the same direction as the mounting direction. As a result, it is possible to shorten the assembly time of the crash box and reduce the manufacturing cost.
- the pair of front side mounting plates are joined by spot welding to the outer surface of the bottom portion of the half body to which the spot welding mounting pieces correspond.
- the pair of rear side mounting plates are joined by spot welding to the outer surface of the bottom portion of the half body corresponding to the mounting rib portions bent forward over the entire width.
- the pair of half-split bodies are integrally joined by crimping a plurality of crimping pins for connecting bottom surfaces and a plurality of crimping pins for connecting flanges.
- the mounting direction in which the pair of front side mounting plates and the pair of rear side mounting plates are mounted to the pair of half-split bodies is the same as the mounting direction in which the pair of flange portions of the pair of half-split bodies are attached to each other. can be assembled into As a result, it is possible to shorten the assembly time of the crash box and reduce the manufacturing cost.
- the front end of the crash box is secured by a lashing nut mounting plate disposed at the front end of the hollow cylindrical body formed by the pair of halves and supported by a plurality of bottom connecting crimp pins. It is possible to reinforce the mechanical strength in As a result, the pair of front mounting plates, the pair of rear mounting plates, and the pair of half-split bodies that constitute the crash box can be made thinner, and the manufacturing cost can be reduced.
- the pair of half-split bodies are superimposed on each other with the respective pair of flange portions sandwiching the tension plate, and are joined by crimping the crimping pins for flange connection inserted through both ends of the tension plate. It is As a result, the mechanical strength in the vehicle width direction at the rear end portion of the crash box can be reinforced by the strut plates arranged in the vehicle width direction. As a result, the pair of front mounting plates, the pair of rear mounting plates, and the pair of half-split bodies that constitute the crash box can be made thinner, and the manufacturing cost can be reduced.
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- Body Structure For Vehicles (AREA)
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Abstract
Description
以下、本発明の種々の実施形態について図面を参照しつつ詳細に説明する。図1~図6は一つの実施形態に係るクラッシュボックス1を示している。尚、各図に適宜に表示した矢印FRは車両前方を示し、矢印UPは上方を示している。更に、矢印INは車幅方向内側を示している。以下の説明において、方向に関する記述はこの方向を基準とすることがある。
図1及び図2に示すように、クラッシュボックス1は、軸を車両前後方向に向けて配置される中空の筒状体として構成される本体部11を有する。本体部11は、例えば、断面略ハット形状の上側と下側の半割体11A、11Bを組み合わせて形成することができる。また、クラッシュボックス1は、半割体11A、11Bのそれぞれの前側(バンパー側)の端部を覆うように、各前側端部に当接した状態でスポット溶接によって接合される一対の前側取付板12A、12Bを有している。また、クラッシュボックス1は、半割体11A、11Bのそれぞれの後側(車体側)の端部を覆うように、各後側端部に当接した状態でスポット溶接によって接合される一対の後側取付板13A、13Bを有している。
前側取付板12A、12Bは、鋼板のプレス成形によって互いに上下方向に対称的な正面視略横長矩形状の平板状に形成されている。例えば合金化溶融亜鉛めっき鋼板や溶融亜鉛めっき鋼板を用いることができ、その厚さは約2.0mm~2.6mm程度、引張強度は440MPa程度とすることができる。図2~図4と図6に示すように、前側取付板12A、12Bの車幅方向外側の側縁は、半割体11A、11Bの車幅方向外側の各フランジ部21Eの先端付近まで延びている。前側取付板12A、12Bの車幅方向内側の側縁は、半割体11A、11Bの車幅方向内側の各フランジ部21Dの先端よりも(例えば約30mm~40mm程度)先まで延びている。
図2、図3、図5に示すように、後側取付板13A、13Bは、鋼板のプレス成形によって互いに上下方向に対称的な正面視略横長矩形状に形成されている。例えば合金化溶融亜鉛めっき鋼板や溶融亜鉛めっき鋼板を用いることができ、その厚さは約2.0mm~2.6mm程度、引張強度は440MPa程度とすることができる。後側取付板13A、13Bは前側取付板12A、12Bの厚さとほぼ同じ厚さとすることができる。具体的には、図1~図3に示すように、後側取付板13A、13Bは、対応する半割体11A、11Bの後端に沿うように折り曲げられ、段差形状に形成されている。
クラッシュボックス1の組み立て手順について図3~図6を参照しながら説明する。先ず、上側に配置される前側取付板12Aを対応する半割体11Aの前側端部に当接させると共に、各折曲げ片23A、23Bを半割体11Aの底面部21Cの外側面に当接させる。これにより、前側取付板12Aの側縁が、半割体11Aの車幅方向外側のフランジ部21Eの車幅方向外側の側縁に対応する位置に来る。
図7~図9に示すように、別の実施形態として、クラッシュボックス51は、各半割体11A、11Bの互いに重ね合わせられた一対のフランジ部21D、21Eが、車両前後方向における複数箇所、例えば、2カ所で、スポット溶接に代えて、複数のフランジ接合用のカシメピン53によって接合することもできる。
次に、クラッシュボックス51の組み立て手順について図8及び図9に基づいて説明する。図8及び図9に示すように、クラッシュボックス1の組み立て手順と同様に、先ず、上側に配置される前側取付板12Aを、半割体11Aの前側端部に当接させると共に、各折曲げ片23A、23Bを、半割体11Aの底面部21Cの車幅方向両外側端縁部の外側面に当接させる。また、前側取付板12Aの車幅方向外側の側縁を、半割体11Aの車幅方向外側のフランジ部21Eの車幅方向外側の側縁に対向させる。
図10及び図11に示すように、別の実施形態として、一対の前側取付板12A、12Bと一対の後側取付板13A、13Bと一対の半割体11A、11Bは、スポット溶接に代えて、複数の底面部連結用のカシメピン65、66、及び、複数のフランジ接合用のカシメピン63によって結合することもできる。
次に、クラッシュボックス61の組み立て手順について図12~図15に基づいて説明する。図12~図15に示すように、先ず、下側に配置される半割体11Bを、開口側が上方に向くように配置する。そして、下側に配置される前側取付板12Bを、この半割体11Bの前側端部に当接させると共に、各折曲げ片23A、23Bを、半割体11Bの底面部21Cの車幅方向両外側端縁部の外側面に当接させる。そして、その状態で、半割体11Bの底面部21Cの前側の側縁部に形成された第1カシメ用貫通孔68と、各折曲げ片23A、23Bに形成された第2カシメ用貫通孔69とが連通するように、半割体11Bに対する前側取付板12Bの車幅方向の位置決めをする。
図16に示すように、別の実施形態として、各半割体11A、11Bの互いに重ね合わせられた一対のフランジ部21D、21Eは、フランジ接合用のカシメピン53に替えて、各接合用貫通孔55に挿通された六角穴付きボルト83とナット85によるボルト締結により接合してもよい。
図17乃至図23は別の実施形態に係るクラッシュボックス91を示している。図17~図19に示すように、クラッシュボックス91は、軸線を車両前後方向に向けて配置される中空の筒状体として構成される本体部92を備えており、この本体部92が断面略ハット形状の一対の半割体92A、92Bで構成されている。一対の半割体92A、92Bは、一対の底面部連結用のカシメピン65(図12参照)により一体的に結合されている。各半割体92A、92Bの互いに重ね合わせられた一対のフランジ部21D、21Eは、車両前後方向における複数箇所、例えば、2カ所において、フランジ接合用のカシメピン63(図12参照)により接合されている。
図17及び図18に示すように、一対の前側取付板93A、93Bの隣り合う側縁部には、互いに離れる方向へ略半円形状に切り欠かれた各ナット挿通用切欠き部102A、102Bが形成されている。各ナット挿通用切欠き部102A、102Bは、一対の半割体92A、92Bの底面部21Cに対向する位置に設けられ、略円筒状の固縛ナット103が、本体部92内から前側へ挿通されている。固縛ナット103は、バンパーリインフォースメント2から(例えば、約5mm~20mm)車両前方側へ突出して、車両を移動させる際に牽引・固縛用のロープを掛けるためのフックのネジ部がねじ込まれて取り付けられる。
図19、図20、図22及び図23に示すように、長尺状の突っ張り板111は、一対の半割体92A、92Bの後方側において、両端部が各フランジ部21D、21E間に挟まれて固定され、車幅方向に沿って配置されている。突っ張り板111は、鋼板のプレス成形によって平面視細長略矩形状に形成されている。例えば一般構造用圧延鋼板を用いることができ、その厚さは約2.0mm~2.6mm程度、引張強度は330MPa~540MPa程度とすることができる。突っ張り板111の厚さは、カシメピン63の円板部63Aの厚さとほぼ同じ厚さに設定されている。
次に、クラッシュボックス91の組み立て手順について図20~図23に基づいて説明する。図20~図23に示すように、先ず、上側に配置される前側取付板93Aを、開口側が下方を向くように配置された半割体92Aの前側端部に当接させる。そして、前側取付板93Aの折曲げ片97Aを車幅方向外側の縦壁部21Bの内側面に当接させると共に、溶接用取付片97Bを半割体92Aの凹部21Gの前側端部の外側面に当接させる。
図24及び図25に示すように、別の実施形態として、クラッシュボックス121から、固縛ナット103、固縛ナット取付板105、及び、底面部連結用のカシメピン65を省略することもできる。
次に、クラッシュボックス121の組み立て手順について図25に基づいて説明する。図25に示すように、先ず、上側に配置される前側取付板93Aを、開口側が下方を向くように配置された半割体92Aの前側端部に当接させる。そして、前側取付板93Aの折曲げ片97Aを車幅方向外側の縦壁部21Bの内側面に当接させると共に、溶接用取付片97Bを半割体92Aの凹部21Gの前側端部の外側面に当接させる。
図26に示すように、別の実施形態として、各半割体92A、92Bの互いに重ね合わせられた一対のフランジ部21D、21Eは、後側のフランジ接合用のカシメピン63に替えて、各接合用貫通孔73に挿通された六角穴付きボルト133とナット135によるボルト締結により接合することもできる。
さらに別の実施形態として、各クラッシュボックス1、51、61、81、91、121、131は、各本体部11、92の軸線周りに(例えば、90度や180度)回転した向きでバンパーリインフォースメント2と車両前後方向に延びるサイドメンバ3Lとの間に設けるようにしてもよい。
以上に説明した実施形態は、少なくとも以下の効果を奏する。例えば、一対の前側取付板及び一対の後側取付板は、一対の半割体の車両前後方向における前側端部と後側端部にスポット溶接又はカシメ加工によって取り付けられる。また、一対の半割体は、筒状体を形成するように一対のフランジ部が互いに重ね合わされてスポット溶接又はカシメ加工若しくはボルト締結によって取り付けられる。そして、一対の前側取付板及び一対の後側取付板が一対の半割体に取り付けられる取付方向と、一対の半割体のそれぞれの一対のフランジ部が互いに重ね合わされて取り付けられる取付方向とが同一方向に組み付けられている。
Claims (14)
- 車幅方向に延びるバンパーリインフォースメントと車両前後方向に延びるサイドメンバとの間に設けられて、衝突時に衝撃エネルギーを吸収するクラッシュボックスであって、
車両前後方向に沿って配置される中空の筒状体を備え、前記筒状体が底面部とこの底面部から延びる縦壁部とこの縦壁部から延びるフランジ部とを有する断面略ハット形状の一対の半割体で構成されており、
一対の前記半割体のそれぞれの前側端部に配置され、前記バンパーリインフォースメントと前記サイドメンバの一方に取り付けられる一対の前側取付板と、
一対の前記半割体のそれぞれの後側端部に配置され、前記バンパーリインフォースメントと前記サイドメンバの他方に取り付けられる一対の後側取付板とを備えており、
一対の前記前側取付板及び一対の前記後側取付板が一対の前記半割体にスポット溶接又はカシメによって第一方向に取り付けられ、前記フランジ部が互いに重ね合わされてスポット溶接又はカシメ若しくはボルト締結によって第二方向に取り付けられ、前記第一方向と前記第二方向とが同一方向である、
クラッシュボックス。 - 請求項1に記載のクラッシュボックスであって、
一対の前記前側取付板と一対の前記後側取付板のそれぞれは、その一部を内側へ折り曲げることにより形成された複数の折曲げ片を有し、
一対の前記前側取付板と一対の前記後側取付板のそれぞれは、複数の前記折曲げ片を対応する前記半割体の前記底面部の外側面にスポット溶接することによって接合されて、一対の前記半割体のそれぞれの前記前側端部と前記後側端部を覆うように取り付けられ、
一対の前記半割体は、それぞれの一対の前記フランジ部が互いに重ね合わせられてスポット溶接によって接合されている、
クラッシュボックス。 - 請求項1に記載のクラッシュボックスであって、
一対の前記前側取付板と一対の前記後側取付板のそれぞれは、その一部を内側へ折り曲げることにより形成された複数の折曲げ片を有し、
一対の前記半割体のそれぞれは、一対の前記フランジ部に、フランジ接合用カシメピン又はボルトが挿通される複数の接合用貫通孔を有し、
一対の前記前側取付板と一対の前記後側取付板のそれぞれは、複数の前記折曲げ片を対応する前記半割体の前記底面部の外側面にスポット溶接することによって接合されて、一対の前記半割体のそれぞれの前記前側端部と前記後側端部を覆うように取り付けられ、
一対の前記半割体は、それぞれの一対の前記フランジ部が互いに重ね合わせられて、複数の前記接合用貫通孔に挿通された前記フランジ接合用カシメピン又は前記ボルトのカシメ加工又はボルト締結により接合されている、
クラッシュボックス。 - 請求項1に記載のクラッシュボックスであって、
両端に外径を小さくした段差部が形成されて、一対の前記半割体の前記底面部の前側と後側の側縁部を連結するための複数の底面部連結用カシメピンと、
一対の前記半割体のそれぞれの一対の前記フランジ部を接合する複数のフランジ接合用カシメピンとを備えており、
一対の前記半割体のそれぞれは、
前記底面部の前側と後側の側縁部のそれぞれに形成されて、前記底面部連結用カシメピンの端部が挿通される複数の第1カシメ用貫通孔と、
一対の前記フランジ部のそれぞれに形成されて、前記フランジ接合用カシメピンが挿通される複数の接合用貫通孔とを有し、
一対の前記前側取付板と一対の前記後側取付板のそれぞれは、
取り付けられる前記半割体の複数の前記第1カシメ用貫通孔のそれぞれに対向する位置において、内側へ折り曲げられることにより形成され、前記底面部連結用カシメピンの端部が挿通される第2カシメ用貫通孔が形成された複数の折曲げ片と、
対応する前記半割体の開口側の側縁部から複数の前記折曲げ片に対応させて内側へ折り曲げられて、前記第2カシメ用貫通孔に対向する位置に前記底面部連結用カシメピンが挿通される複数の支持用貫通孔が形成された支持用折曲げ部とを有し、
一対の前記前側取付板と一対の前記後側取付板のそれぞれは、前記支持用折曲げ部が相対向して配置されると共に、複数の前記折曲げ片が対応する前記半割体の前記底面部の外側面に当接して、一対の前記半割体のそれぞれの前記前側端部と前記後側端部を覆うように配置され、
複数の前記底面部連結用カシメピンは、前記支持用折曲げ部に形成された複数の前記支持用貫通孔のそれぞれに挿通されると共に、前記第1カシメ用貫通孔に挿通された両端部が、対応する前記折曲げ片の前記第2カシメ用貫通孔に挿通され、
複数の前記フランジ接合用カシメピンは、互いに対向する一対の前記フランジ部に形成された複数の前記接合用貫通孔のそれぞれに挿通されて、
複数の前記底面部連結用カシメピンと複数の前記フランジ接合用カシメピンのカシメ加工により一対の前記半割体と一対の前記前側取付板及び一対の前記後側取付板とが一体的に結合されている、
クラッシュボックス。 - 請求項1に記載のクラッシュボックスであって、
一対の前記半割体のそれぞれの一対の前記フランジ部を互いに重ね合わせた状態で接合する複数のフランジ接合用カシメピン、又は、ボルトとナットを備え、
一対の前記前側取付板は、対極にあるそれぞれの側縁部から後側へ折り曲げられて、前記半割体の前記底面部の外側面に当接する複数のスポット溶接用取付片を有し、
一対の前記後側取付板は、隣り合うそれぞれの側縁部から前側へ折り曲げられて、前記半割体の前記底面部の外側面に当接する取付リブ部を有し、
一対の前記半割体のそれぞれは、一対の前記フランジ部に、前記フランジ接合用カシメピン又は前記ボルトが挿通される複数の接合用貫通孔を有し、
一対の前記前側取付板のそれぞれは、複数の前記スポット溶接用取付片が対応する前記半割体の前記底面部の外側面にスポット溶接によって接合されて、一対の前記半割体のそれぞれの前記前側端部を覆うように取り付けられ、
一対の前記後側取付板のそれぞれは、前記取付リブ部が対応する前記半割体の前記底面部の後側の側縁部の外側面にスポット溶接によって接合されて、一対の前記半割体のそれぞれの前記底面部から互いに離れる方向へ突出するように取り付けられ、
一対の前記半割体は、それぞれの一対の前記フランジ部が互いに重ね合わせられて、複数の前記接合用貫通孔に挿通された前記フランジ接合用カシメピン又は前記ボルトのカシメ加工又はボルト締結により接合されている、
クラッシュボックス。 - 請求項1に記載のクラッシュボックスであって、
両端に外径を小さくした段差部が形成されて、一対の前記半割体の前記底面部の前側の側縁部を相対向した状態で連結する複数の底面部連結用カシメピンと、
一対の前記半割体のそれぞれの一対の前記フランジ部を接合する複数のフランジ接合用カシメピンと、
を備え、
一対の前記半割体のそれぞれは、
前記底面部の前側の側縁部に形成されて、前記底面部連結用カシメピンの端部が挿通される複数の第3カシメ用貫通孔と、
一対の前記フランジ部のそれぞれに形成されて、前記フランジ接合用カシメピンが挿通される複数の接合用貫通孔と、
を有し、
一対の前記前側取付板は、
対極にあるそれぞれの側縁部から後側へ折り曲げられて、対応する前記半割体の前記底面部の外側面に当接するスポット溶接用取付片と、
対極にあるそれぞれの側縁部から複数の前記第3カシメ用貫通孔のそれぞれに対応させて後側へ折り曲げられて、対応する前記半割体の前記底面部の外側面に当接して、前記底面部連結用カシメピンの端部が挿通される第4カシメ用貫通孔が形成された複数のカシメ用取付片と、
を有し、
一対の前記後側取付板は、隣り合うそれぞれの側縁部から前側へ折り曲げられて、前記半割体の前記底面部の後側の側縁部の外側面に当接する取付リブ部を有し、
一対の前記前側取付板のそれぞれは、前記スポット溶接用取付片が対応する前記半割体の前記底面部の外側面にスポット溶接によって接合されて、一対の前記半割体のそれぞれの前記前側端部を覆うように取り付けられ、
一対の前記後側取付板のそれぞれは、前記取付リブ部が対応する前記半割体の前記底面部の後側の側縁部の外側面にスポット溶接によって接合されて、一対の前記半割体のそれぞれの前記底面部から互いに離れる方向へ突出するように取り付けられ、
複数の前記底面部連結用カシメピンは、一対の前記半割体のそれぞれの前記第3カシメ用貫通孔に挿通された両端部が、対応する前記カシメ用取付片の前記第4カシメ用貫通孔に挿通され、
複数の前記フランジ接合用カシメピンは、互いに対向する一対の前記フランジ部に形成された複数の前記接合用貫通孔のそれぞれに挿通されて、
複数の前記底面部連結用カシメピンと複数の前記フランジ接合用カシメピンのカシメ加工により一対の前記半割体と一対の前記前側取付板及び一対の前記後側取付板とが一体的に結合されている、
クラッシュボックス。 - 請求項6に記載のクラッシュボックスであって、
一対の前記半割体によって形成された中空の筒状体の前端部または後端部に配置されて、車両の牽引または固縛用のナットが前記クラッシュボックスの外側へ突出するように取り付けられた平板状のナット取付板を備え、
前記ナット取付板は、対極にあるそれぞれの両側縁部から前記第3カシメ用貫通孔に対応させて内側へ折り曲げられて、対応する前記半割体の前記底面部の内側面に当接して、前記第3カシメ用貫通孔に対向する位置に前記底面部連結用カシメピンの軸部が挿通される第2支持用貫通孔が形成された複数の第2支持用取付片を有し、
一対の前記前側取付板または一対の前記後側取付板は、隣り合うそれぞれの側縁部から互いに離れる方向へ切り欠かれて、前記ナットが挿通されるナット挿通用切欠き部を有し、
複数の前記底面部連結用カシメピンは、前記ナット取付板に形成された車両上下方向に相対向する複数組の前記第2支持用取付片に形成された前記第2支持用貫通孔のそれぞれに挿通されると共に、前記第3カシメ用貫通孔に挿通された両端部が、対応する前記カシメ用取付片の前記第4カシメ用貫通孔に挿通され、
複数の前記底面部連結用カシメピンと複数の前記フランジ接合用カシメピンのカシメ加工により一対の前記半割体と一対の前記前側取付板及び一対の前記後側取付板とが一体的に結合されると共に、前記ナット取付板が一対の前記半割体の前端部の内側に配置されて、前記ナットが前記ナット挿通用切欠き部から前記クラッシュボックスの外側へ突出する、
クラッシュボックス。 - 請求項5~請求項7のいずれか1項に記載のクラッシュボックスであって、
一対の前記半割体のそれぞれの一対の前記フランジ部の後方側に設けられた前記接合用貫通孔に両端部が対向するように一対の前記フランジ部によって挟まれて、車幅方向に沿って配置される長尺状の突っ張り板を備え、
前記フランジ接合用カシメピンは、
前記接合用貫通孔よりも大きい円板部と、
前記円板部の軸方向両端に前記接合用貫通孔に挿通される段差部と、
を有し、
前記突っ張り板は、両端部に形成されて、前記フランジ接合用カシメピンの前記円板部が挿通される一対の取付用貫通孔を有し、
前記突っ張り板は、一方の前記半割体の一対の前記フランジ部の後方側に設けられた前記接合用貫通孔に前記段差部が挿通された一対の前記フランジ接合用カシメピンの前記円板部が一対の前記取付用貫通孔に挿通されて配置され、
一対の前記半割体は、それぞれの一対の前記フランジ部が前記突っ張り板を挟んだ状態で互いに重ね合わせられて、複数の前記接合用貫通孔に挿通された前記段差部のカシメ加工により接合されている、
クラッシュボックス。 - 請求項1~請求項8のいずれか1項に記載のクラッシュボックスであって、
一対の前記前側取付板と一対の前記後側取付板と一対の前記半割体は、合金化溶融亜鉛めっき鋼板で形成されている、
クラッシュボックス。 - 請求項2に記載のクラッシュボックスを製造する方法であって、
一方の前記前側取付板と一方の前記後側取付板のそれぞれの複数の前記折曲げ片を対応する一方の前記半割体の両側縁部における前記底面部の外側面にスポット溶接によって接合する工程と、
他方の前記前側取付板と他方の前記後側取付板のそれぞれの複数の前記折曲げ片を対応する他方の前記半割体の両側縁部における前記底面部の外側面にスポット溶接によって接合する工程と、
一方の前記半割体の前記底面部の内側面と他方の前記半割体の前記底面部の内側面とが相対向するように一対の前記フランジ部のそれぞれを互いに重ね合わせる工程と、
重ね合わされた一対の前記フランジ部のそれぞれをスポット溶接によって接合する工程とを備えた方法。 - 請求項3に記載のクラッシュボックスを製造する方法であって、
一方の前記前側取付板と一方の前記後側取付板のそれぞれの複数の前記折曲げ片を対応する一方の前記半割体の両側縁部における前記底面部の外側面にスポット溶接によって接合する工程と、
他方の前記前側取付板と他方の前記後側取付板のそれぞれの複数の前記折曲げ片を対応する他方の前記半割体の両側縁部における前記底面部の外側面にスポット溶接によって接合する工程と、
一方の前記半割体の前記底面部の内側面と他方の前記半割体の前記底面部の内側面とが相対向するように一対の前記フランジ部のそれぞれを互いに重ね合わせると共に、重ね合わされた一対の前記フランジ部のそれぞれの複数の前記接合用貫通孔に前記フランジ接合用カシメピン又は前記ボルトを挿通する工程と、
挿通された前記フランジ接合用カシメピン又は前記ボルトをカシメ加工又はボルト締結する工程とを備えた方法。 - 請求項4に記載のクラッシュボックスを製造する方法であって、
一方の前記前側取付板と一方の前記後側取付板のそれぞれの複数の前記折曲げ片を対応する一方の前記半割体の両側縁部における前記底面部の外側面に当接させて、複数の前記第1カシメ用貫通孔と複数の前記第2カシメ用貫通孔が連通するように配置する工程と、
配置された一方の前記前側取付板と一方の前記後側取付板のそれぞれの前記支持用折曲げ部に形成された複数の前記支持用貫通孔のそれぞれに前記底面部連結用カシメピンの一端側を挿通して、前記底面部連結用カシメピンの一方の端部を前記第1カシメ用貫通孔及び前記第2カシメ用貫通孔に挿通する工程と、
一方の前記半割体の一対の前記フランジ部に形成された複数の前記接合用貫通孔に前記フランジ接合用カシメピンの一方の端部を挿通する工程と、
他方の前記前側取付板と他方の前記後側取付板のそれぞれの複数の前記折曲げ片を対応する他方の前記半割体の両側縁部における前記底面部の外側面に当接させて、複数の前記第1カシメ用貫通孔と複数の前記第2カシメ用貫通孔が連通するように配置する工程と、
配置された他方の前記前側取付板と他方の前記後側取付板のそれぞれの前記支持用折曲げ部に形成された複数の前記支持用貫通孔のそれぞれに前記底面部連結用カシメピンの他端側を挿通して、前記底面部連結用カシメピンの他方の端部を他方の前記半割体の前記第1カシメ用貫通孔及び前記第2カシメ用貫通孔に挿通する工程と、
挿通された前記フランジ接合用カシメピンの他方の端部を他方の前記半割体の一対の前記フランジ部に形成された複数の前記接合用貫通孔に挿通する工程と、
一対の前記前側取付板と一対の前記後側取付板のそれぞれの複数の前記第2カシメ用貫通孔に挿通された複数の前記底面部連結用カシメピンの両端部と、一対の前記半割体のそれぞれの複数の前記接合用貫通孔に挿通された複数の前記フランジ接合用カシメピンの両端部とをカシメ加工する工程とを備えた方法。 - 請求項5に記載のクラッシュボックスを製造する方法であって、
一方の前記前側取付板の複数の前記スポット溶接用取付片を対応する一方の前記半割体の前側の側縁部における前記底面部の外側面にスポット溶接によって接合すると共に、一方の前記後側取付板の前記取付リブ部を一方の前記半割体の後側の側縁部における前記底面部の外側面にスポット溶接によって接合する工程と、
他方の前記前側取付板の複数の前記スポット溶接用取付片を対応する他方の前記半割体の前側の側縁部における前記底面部の外側面にスポット溶接によって接合すると共に、他方の前記後側取付板の前記取付リブ部を他方の前記半割体の後側の側縁部における前記底面部の外側面にスポット溶接によって接合する工程と、
一方の前記半割体の前記底面部の内側面と他方の前記半割体の前記底面部の内側面とが相対向するように一対の前記フランジ部のそれぞれを互いに重ね合わせると共に、重ね合わされた一対の前記フランジ部のそれぞれの複数の前記接合用貫通孔に前記フランジ接合用カシメピン又は前記ボルトを挿通する工程と、
挿通された前記フランジ接合用カシメピン又は前記ボルトをカシメ加工又はボルト締結する工程とを備えた方法。 - 請求項6に記載のクラッシュボックスを製造する方法であって、
一方の前記前側取付板の前記スポット溶接用取付片と複数の前記カシメ用取付片を対応する一方の前記半割体の前側の側縁部における前記底面部の外側面に当接させて、複数の前記第3カシメ用貫通孔と複数の前記第4カシメ用貫通孔が連通するように配置する工程と、
配置された一方の前記前側取付板の前記スポット溶接用取付片を対応する一方の前記半割体の前記底面部の外側面にスポット溶接によって接合すると共に、一方の前記後側取付板の前記取付リブ部を一方の前記半割体の後側の側縁部における前記底面部の外側面にスポット溶接によって接合する工程と、
他方の前記前側取付板の前記スポット溶接用取付片と複数の前記カシメ用取付片を対応する他方の前記半割体の前側の側縁部における前記底面部の外側面に当接させて、複数の前記第3カシメ用貫通孔と複数の前記第4カシメ用貫通孔が連通するように配置する工程と、
配置された他方の前記前側取付板の前記スポット溶接用取付片を対応する他方の前記半割体の前記底面部の外側面にスポット溶接によって接合すると共に、他方の前記後側取付板の前記取付リブ部を他方の前記半割体の後側の側縁部における前記底面部の外側面にスポット溶接によって接合する工程と、
一方の前記半割体の複数の前記第3カシメ用貫通孔と一方の前記前側取付板の複数の前記第4カシメ用貫通孔に、複数の前記底面部連結用カシメピンの一方の端部を前記底面部の内側面から挿通すると共に、一方の前記半割体の一対の前記フランジ部に形成された複数の前記接合用貫通孔に前記フランジ接合用カシメピンの一方の端部を挿通する工程と、
配置された複数の前記底面部連結用カシメピンの他方の端部を、他方の前記半割体の複数の前記第3カシメ用貫通孔と他方の前記前側取付板の複数の前記第4カシメ用貫通孔に、他方の前記半割体の前記底面部の内側面から挿通すると共に、他方の前記半割体の一対の前記フランジ部に形成された複数の前記接合用貫通孔に、配置された複数の前記フランジ接合用カシメピンの他方の端部を挿通する工程と、
一対の前記前側取付板のそれぞれの複数の前記第4カシメ用貫通孔に挿通された複数の前記底面部連結用カシメピンの両端部と、一対の前記半割体のそれぞれの複数の前記接合用貫通孔に挿通された複数の前記フランジ接合用カシメピンの両端部とをカシメ加工する工程とを備えた方法。
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WO2004113131A1 (en) * | 2003-06-23 | 2004-12-29 | Norsk Hydro Asa | Energy absorbing system |
JP2005170082A (ja) * | 2003-12-08 | 2005-06-30 | Nissan Motor Co Ltd | エネルギ吸収装置 |
KR100775806B1 (ko) * | 2006-09-05 | 2007-11-12 | 주식회사 성우하이텍 | 차량용 크래쉬 박스 |
JP2013216169A (ja) * | 2012-04-05 | 2013-10-24 | Toyoda Iron Works Co Ltd | 車両用衝撃吸収部材 |
JP2014238103A (ja) | 2013-06-06 | 2014-12-18 | 豊田鉄工株式会社 | クラッシュボックス |
WO2019117110A1 (ja) * | 2017-12-14 | 2019-06-20 | マツダ株式会社 | 車両の衝撃吸収構造 |
CN110606038A (zh) * | 2019-09-17 | 2019-12-24 | 吉利汽车研究院(宁波)有限公司 | 一种汽车防撞梁和吸能盒的连接结构 |
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WO2004113131A1 (en) * | 2003-06-23 | 2004-12-29 | Norsk Hydro Asa | Energy absorbing system |
JP2005170082A (ja) * | 2003-12-08 | 2005-06-30 | Nissan Motor Co Ltd | エネルギ吸収装置 |
KR100775806B1 (ko) * | 2006-09-05 | 2007-11-12 | 주식회사 성우하이텍 | 차량용 크래쉬 박스 |
JP2013216169A (ja) * | 2012-04-05 | 2013-10-24 | Toyoda Iron Works Co Ltd | 車両用衝撃吸収部材 |
JP2014238103A (ja) | 2013-06-06 | 2014-12-18 | 豊田鉄工株式会社 | クラッシュボックス |
WO2019117110A1 (ja) * | 2017-12-14 | 2019-06-20 | マツダ株式会社 | 車両の衝撃吸収構造 |
CN110606038A (zh) * | 2019-09-17 | 2019-12-24 | 吉利汽车研究院(宁波)有限公司 | 一种汽车防撞梁和吸能盒的连接结构 |
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