WO2004101323A1 - 自動車の衝撃吸収体 - Google Patents
自動車の衝撃吸収体 Download PDFInfo
- Publication number
- WO2004101323A1 WO2004101323A1 PCT/JP2004/006776 JP2004006776W WO2004101323A1 WO 2004101323 A1 WO2004101323 A1 WO 2004101323A1 JP 2004006776 W JP2004006776 W JP 2004006776W WO 2004101323 A1 WO2004101323 A1 WO 2004101323A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wall
- shock absorber
- hollow body
- rib
- plate
- Prior art date
Links
- 230000035939 shock Effects 0.000 title claims abstract description 89
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 86
- 239000004033 plastic Substances 0.000 claims abstract description 23
- 229920003023 plastic Polymers 0.000 claims abstract description 23
- 230000002093 peripheral effect Effects 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims description 20
- 239000011162 core material Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 210000003195 fascia Anatomy 0.000 claims 14
- 238000010521 absorption reaction Methods 0.000 description 16
- -1 polypropylene Polymers 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- 239000004743 Polypropylene Substances 0.000 description 8
- 229920001155 polypropylene Polymers 0.000 description 8
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000000994 depressogenic effect Effects 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000006260 foam Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 229920001169 thermoplastic Polymers 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000000805 composite resin Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
- F16F7/121—Vibration-dampers; Shock-absorbers using plastic deformation of members the members having a cellular, e.g. honeycomb, structure
-
- 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
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R2019/186—Additional energy absorbing means supported on bumber beams, e.g. cellular structures or material
- B60R2019/1866—Cellular structures
Definitions
- the present invention relates to a shock absorber mounted on at least one of a front part and a rear part of a vehicle, wherein the shock absorber is interposed between a pump body and a vehicle body and is connected to another vehicle or another object received by the pump body.
- the present invention relates to a vehicle shock absorber that can absorb and mitigate energy due to a wide range of shock values in the event of a collision or collision.
- the front and rear of the vehicle is equipped with a bumper as a shock absorbing mechanism for absorbing and mitigating the impact of collision or contact with another vehicle or other object.
- a bumper as a shock absorbing mechanism for absorbing and mitigating the impact of collision or contact with another vehicle or other object.
- a steel plate obtained by bending a steel plate was used as a conventional pump.
- bumpers have also been required that match the body design in terms of shape, color, etc. Have been.
- Such a bumper has a structure in which the bumper is covered with a bumper face made of a thermoplastic plastic and a shock absorber is disposed inside the bumper.
- the pumper face is formed by injection molding or stamping of polypropylene or other thermoplastic.
- a polymer alloy made of polypropylene and another composite resin has been proposed. 'And many types of shock absorbers have been adopted in terms of performance and cost. The configuration is centered on the bumper beam.
- a pumper beam a beam obtained by bending a steel plate as disclosed in Japanese Patent Application Laid-Open No. HEI 6-2555343 and Japanese Patent Application Laid-Open No. HEI 6-328988 is often used.
- a beam obtained by bending a steel plate as disclosed in Japanese Patent Application Laid-Open No. HEI 6-2555343 and Japanese Patent Application Laid-Open No. HEI 6-328988 is often used.
- Pamper beams made of synthetic resin reinforced with fibers such as glass fiber and carbon fiber have begun to be used.
- the mainstream of these pampering beams is to cover the surface with a pampering face.
- a foam for energy absorption may be interposed between the pump beam and the pump face.
- the conventional pump system described above can absorb and mitigate the energy due to the high impact value (20 kN or more) when colliding or contacting with another vehicle or another object. It is difficult to absorb and mitigate the energy due to (kN or less).
- Japanese Patent Application Laid-Open Publication No. 2002-214,1992 discloses a technology that has a hollow portion, forms a concave rib from the front wall and the rear wall, and joins and integrates their leading ends to improve shock absorption. 0 0 2 1 8 7 5 0 8
- polypropylene with a flexural modulus of 500 kg Zcm 2 to 250 kg Zcm 2 A vehicle shock absorber made of resin is described in Japanese Patent No. 3313939.
- a duct for a vehicle having an impact-absorbing property in which a concave rib and a plate-like rib are formed is disclosed in Japanese Patent Application Laid-Open No. 2000-193570 and Japanese Patent Application Laid-Open No. 2000-23957.
- Japanese Patent Application Laid-Open Publication No. 2001-334156 discloses a duct for a vehicle having a shock absorbing property in which a reinforced core material is inserted, and further discloses a bumper rain hose having a concave rib and a plate-like rib. Each of them is described in Japanese Patent No. 2714457.
- thermoplastic resin as in the vehicle impact absorber described in the above-mentioned Japanese Patent Application Laid-Open No. 2002-187580 and Japanese Patent No. 3313939.
- the ⁇ ⁇ -shaped ribs formed from the front and back walls of the hollow double-walled structure and joined together by joining their ends are required to provide the required impact if the hollow body has a sufficient thickness.
- the required amount of shock absorption could not be obtained when the thickness of the hollow body was limited, such as when the space between the bumper face and the bumper beam was small due to the design, and especially the impact was applied Immediately after, it is required to improve the impact absorption performance.
- the present invention provides a hollow body in which the first wall is depressed toward the opposing second wall, and the second wall is depressed toward the opposing first wall, so that one concave rib and the other concave rib are provided in plurality.
- One end of one concave lip and the other end of the concave lip are welded and integrated, and further, the first wall is projected toward the opposing second wall and the second wall is opposing the first wall.
- a pair of plate-like ribs consisting of one plate-like rib and the other plate-like rib are formed so as to connect a plurality of concave ribs by projecting toward the wall, and one plate-like rib and the other plate-like rib are formed.
- a vehicle shock absorber is provided with a vehicle shock absorber interposed between a bumper face and a vehicle body to absorb a shock received by a bumper facilitator. And comprising a bumper beam made of metal or plastic disposed on the vehicle body side and a hollow body made of plastic disposed on the bumper face side, wherein the hollow bodies face each other at intervals.
- a plurality of concave ribs having a welding surface which is recessed inwardly and fused to each other.
- the vehicle shock absorber according to claim 2 of the present invention is a vehicle shock absorber interposed between a bumper face and a vehicle body to absorb a shock received by a bumper face.
- a pair of concave ribs formed of a plurality of concave ribs are formed, and the one concave lip and the other concave rib have a welding surface in which the respective tips are welded and integrated, and face the first wall.
- the one plate-shaped rib and the other plate-shaped rib are formed so as to connect the two concave lips, and have a welded portion in which the leading ends are welded and integrated.
- the shock absorber for a vehicle according to claim 3 of the present invention is a shock absorber for a vehicle that is interposed between a pumper face and a vehicle body to absorb a shock received by the pumper face.
- the first wall on one face side is composed of a second wall on the bumper beam side and a peripheral wall connecting the peripheral portions of both walls, and the first wall and the second wall are opposed to each other and hollow.
- An automobile shock absorber according to claim 4 of the present invention is the automobile shock absorber according to claim 1, 2 or 3, wherein the one of the concave ribs formed in the hollow body is welded from the first wall.
- the height (b) to the surface is 15.0-3.50 mm
- the height (c) from the second wall of the other concave rib to the welding surface is 15.0-35.0. 0 mm
- the average distance (a) from the first wall to the second wall of the shock absorber is formed in the range of 30.0 to 70.
- Omni The automobile shock absorber according to claim 5 of the present invention is characterized in that:
- shock absorber for an automobile according to 2, 3, or 4 wherein one of the concave ribs formed in the hollow body is formed in a substantially cylindrical shape, and the first wall and the second wall have a diameter (d ) Has a substantially circular opening of 15.0 to 30. O mm, and the welding surface formed at the tip of the pair of concave ribs has a diameter (e) of 5.0 to 15. O mm. It is characterized by being formed in a substantially circular shape.
- the shock absorber for a vehicle according to claim 6 of the present invention is the shock absorber for a vehicle according to claim 3, 4, or 5, wherein the connecting lip formed in the hollow body has a concave rib and a concave rib adjacent to each other. It is characterized by being interposed between the ribs so as to rise in the direction of travel.
- the vehicle shock absorber according to claim 7 of the present invention is the vehicle shock absorber according to claim 3, 4, 5, or 6, wherein the connecting rib has a depth of
- the automobile shock absorber according to claim 8 of the present invention is characterized in that:
- the shock absorber for a vehicle according to claim 9 of the present invention is the shock absorber for a vehicle according to claim 8, wherein the virtual straight line formed in the hollow body is 30 ° to 6 ° with respect to a horizontal line. It has an angle within the range of 0 °.
- the vehicle impact absorber according to claim 10 of the present invention is the vehicle impact absorber according to claim 8 or 9, wherein a total length of all the connecting ribs formed in the hollow body is a total virtual length.
- the combined length of the straight lines is within a range of 20% to 60%.
- the automobile shock absorber according to claim 11 of the present invention is the automobile impact absorber according to claim 3, 4, 5, 6, or 7, wherein the connecting rib formed in the hollow body has a plate shape.
- the ribs are formed in a direction substantially perpendicular to the ribs.
- the vehicle shock absorber according to claim 12 of the present invention is the vehicle shock absorber according to claim 3, 4, 5, 6, 7, 8, 9, 10, or 11;
- the connection rib formed on the hollow body is formed only on the first wall.
- the vehicle shock absorber according to claim 13 of the present invention is the vehicle shock absorber according to claim 2, 3, 4, or 5, wherein the plate-shaped rib formed in the hollow body has a thickness.
- (F) is formed in a plate shape of 2.0 to 10.0 mm.
- the shock absorber for an automobile according to claim 14 of the present invention is the shock absorber for an automobile according to claim 2, 3, 4, 5, or 13, wherein one of the plate-shaped members formed in the hollow body is provided.
- the lip or the other plate-like lip is formed in a concave groove shape.
- the shock absorber for an automobile according to claim 15 of the present invention is the shock absorber for an automobile according to claim 2, 3, 4, 5, or 13, wherein one of the plate-shaped members formed in the hollow body is provided.
- the rib or the other plate-shaped rib is formed in a solid plate shape.
- An automobile impact absorber according to claim 16 of the present invention is the automobile impact absorber according to claims 2, 3, 4, 5, 13, or 14, wherein the impact absorber is formed in the hollow body.
- One of the plate-like ribs or the other plate-like rib is characterized in that a reinforcing core material is embedded therein.
- FIG. 1 is a cutaway perspective view showing a part of an impact absorber for an automobile according to a first embodiment of the present invention
- FIG. 2 is a front view showing a part of a hollow body
- FIG. FIG. 4 is a cross-sectional view taken along line AA of FIG. 2
- FIG. 5 is a cross-sectional view taken along line BB of FIG. 2
- FIG. 6 is an impact absorption of the vehicle according to the second embodiment of the present invention.
- FIG. 7 is a cutaway perspective view showing a part of the hollow body
- FIG. 8 is a sectional view taken along line CC of FIG. 7
- FIG. 9 is a line D-D of FIG.
- FIG. 10 is a cutaway perspective view showing a main part of FIG. 7;
- FIG. 10 is a cutaway perspective view showing a main part of FIG. 7; FIG.
- FIG. 11 is another example of a hollow body constituting an automobile shock absorber according to a second embodiment of the present invention
- FIG. 12 is a front view of FIG. 7
- FIG. 13 is a sectional view taken along line E--E of FIG. 11,
- FIG. 14 is a second embodiment of the present invention.
- FIG. 15 is a cutaway perspective view showing a main part of a hollow body in which a reinforcing core is embedded in a plate-like rib according to the second embodiment of the present invention
- FIG. 16 is a perspective view showing an example of the present invention.
- FIG. 17 is a graph showing the characteristics of an automobile shock absorber and the characteristics of a comparative example.
- FIG. 17 is a cross-sectional view showing a professional molding mode of the shock absorber according to the present invention.
- FIG. It is a sectional view. BEST MODE FOR CARRYING OUT THE INVENTION
- the shock absorber 1 of the vehicle is interposed between the bumper facer 2 and the vehicle body (not shown).
- the bumper beam 3 absorbs a shock and is composed of a bumper beam 3 arranged on the vehicle body side and a hollow body 4 arranged on the bumper face 2 side.
- Pampa Face 2 is made of plastic
- the par beam 3 is made of metal or plastic
- the hollow body 4 is made of plastic.
- the thickness of the hollow body 4 is preferably in the range of 30.0 to 100.0 mm from the viewpoint of molding, and particularly preferably 30.0 to 70.0 mm. It is preferably within the range of 3 mm to 6.0 mm, more preferably 0.5 mn! A range of .about.1.5 mm is particularly preferred.
- the hollow body 4 is composed of a first wall 8 on the side of the bumper beam 2 and a second wall 9 on the side of the bumper beam 3 and a surrounding wall 10 connecting the peripheral portions of both walls at an interval.
- the first wall 8 and the second wall 9 have one pair of concave ribs 5 and the other pair of concave ribs 6 which are opposed to each other and are depressed inward.
- the other concave rib 6 is fused to the other at the welding surface 7. That is, the first wall 8 and the second wall 9 are provided with a plurality of concave ribs which are opposed to each other and inwardly recessed and fused to each other.
- the shock absorber 11 of the automobile has a bumper face 12 and a vehicle body similar to the first embodiment. And a bumper beam 13 disposed on the vehicle body side and a hollow body 14 disposed on the pumper face 12 side.
- the hollow body 14 is a hollow body formed by blow molding thermoplastic plastic, 21 is a hollow part, 18 is a first wall, 19 is a second wall, and 20 is a peripheral wall. The first wall 18 and the second wall 19 are connected by a peripheral wall 20 at a distance.
- the hollow body 14 has a first wall 18 disposed on the pumper face 12 side and a second wall 19 disposed on the pumper beam 3 side.
- the hollow body 14 has one pair of substantially cylindrical concave ribs 15 and the other concave shape formed by recessing both the first wall 18 and the second wall 19 toward the other. It has many ribs 16, one of which is the other The leading ends of the 0 concave ribs 15 and 16 are in contact with each other to form a welding surface 17.
- the first wall 18 is formed with one plate-like lip 22 so as to connect the concave ribs 15, and this one plate-like rib 22 has a narrow groove shape having a narrow opposing width.
- the facing width f is 2.0 to 10.0 mm including the wall thickness.
- the other plate-like rib 23 is formed so as to connect between the concave ribs 16, and this other plate-like rib 23 is also similar to the one plate-like rib 22. It has a groove shape, and its facing width f is 2.0 to 10.0 mm including the wall thickness.
- One plate-like rib 22 and the other plate-like rib 23 are opposed to each other, and their opposed ends are welded and integrated, and 24 is a welded portion thereof.
- Both the first wall 18 and the second wall 19 are respectively depressed toward the other, and the tips of the first wall 18 and the second wall 19 are brought into contact with each other to form a welded surface 17 which is integrally welded.
- the impact at the time of collision with the pampering machine is achieved. Even when the direction is oblique to the concave ribs 15 and 16 formed in the hollow body, the required impact absorption performance is exhibited without the concave ribs 15 and 16 falling over. And a uniform shock absorbing force can be obtained even when an impact is applied to an arbitrary location.
- the one plate-like lip 22 and the other plate-like rib 23 formed in the hollow body 14 may be formed in a solid plate shape as shown in FIG.
- a reinforcing core member 25 made of a metal or plastic plate may be embedded in one of the plate-like ribs 22 and the other of the plate-like lip 23.
- the length b from the first wall 8 (18) of one of the concave ribs 5 (15) formed on the hollow body 4 (14) to the welding surface 7 (17) is 15.0-3.
- the height c from the second wall 9 (19) of the other concave rib 6 (16) to the welding surface 7 (17) is 5.0 mm to 5.0 mm. It is formed in.
- the average distance a between the first wall 8 (18) and the second wall 9 (19) is particularly preferably 30.0 to 70.0 mm.
- the pair of substantially cylindrical concave ribs 5 (15) and 6 (16) formed on the first wall 8 (18) and the second wall 9 (19) have a diameter d of 1 It has a substantially circular opening of 5.0 to 30.0 mm, and has a welding surface 7 (17) formed at the tip of a pair of concave ribs 5 (15) and 6 (16). Is formed in a substantially circular shape having a diameter e of S 5.0 to 15.0 mm, and a pair of concave ribs 5 (15) and 6 (16) are formed in a substantially circular wall with a slope. It is preferable that the first wall 8 (18) and the second wall 9 (19) thus formed have a conical shape so as to connect the substantially circular welding surface 7 (17).
- the openings and the welding surfaces 7 (17) of the one concave rib 5 (15) and the other concave rib 6 (16) are not limited to the substantially circular shape shown in the figure, but may be elliptical or hexagonal. It may be a polygon such as a polygon or an octagon.
- the bumper beam 3 (13) is made of metal or plastic, but metal can be used to weld a steel U-shaped plate such as iron or aluminum to use a structural member such as a box-shaped cross section. .
- a metal with high rigidity such as a high-tensile steel sheet
- the sheet material can be made as thin as possible, so that the weight can be reduced.
- the plastic has high rigidity, in which carbon fiber or glass fiber is incorporated, having a flexural modulus of 400 MPa or more.
- Bumper beam 3 (1 3) is for a car body with a box-shaped cross section or a U-shaped cross section. 2 It may have a long shape extending in the width direction, and may have a mounting portion to be attached to the vehicle body.
- Bumper face 2 (12) is formed by injection molding or stamping molding of polypropylene or other thermoplastics.
- the surface of the bumper facer 2 is coated according to the body of the car.However, considering the recyclability of the car at the time of disposal, if a resin made of polypropylene and other composite resin is used. Painted resin can be treated at the same time.
- the hollow body 4 (14) may be any resin that can be molded into a single mold, such as a polyolefin resin such as polyethylene or polypropylene, a styrene resin such as polystyrene or ABS resin, or a polyester resin such as polyethylene terephthalate. It is a resin with high mechanical strength such as rigidity, such as polyamide, and a thermoplastic resin with a flexural modulus of 800 to 250 MPa, especially when considered for recyclability. Polypropylene resins such as propylene, polyethylene, or polymer alloys or blends based on these are preferred.
- first and second embodiments of the present invention between the adjacent concave ribs 5 and 5 (between 15 and 15) and between the adjacent concave ribs 6 and 6 adjacent to each other. At least one of them (between 16 and 16) can be provided with a concave groove-shaped connecting lip 26 that rises in the traveling direction of the vehicle.
- the connecting rib 26 is formed on an imaginary straight line g having an appropriate angle with respect to the horizontal line.
- the virtual straight line g is 0 for the parallel line. It can be arbitrarily selected within the range of 90 ° to 90 °, but 30 ° to 60 ° and 90 ° are preferable from the viewpoint of impact absorption performance and moldability.
- the plate-like ribs 22 in FIG. 11 are formed on a horizontal line
- the connecting rib 26 is formed on an imaginary straight line g having an angle of about 90 ° with the horizontal line.
- the plate-like ribs 22 and the connecting lip 26 are formed in directions substantially orthogonal to each other, so that they can support each other and appropriately prevent the concave ribs and the plate-like ribs from falling down against impact. You can do it.
- one of the concave ribs 5 (15) and the other of the concave ribs 6 (16) are spaced apart from each other on a virtual straight line g. I have.
- a connecting rib 26 can be formed on the virtual straight line g. As shown in FIG. 2, the virtual straight line g is 30 with respect to the horizontal line. It has an angle ⁇ of ⁇ 60 °.
- the total length of all connecting ribs 26 is the total length of all virtual straight lines g including the first wall 8 (18), the second wall 9 (19), and the surrounding wall 10 (20). Is set within the range of 20% to 60%.
- the total length of all connecting ribs 26 is divided by the total length of all imaginary straight lines g including the first wall 8 (18), the second wall 9 (19), and the surrounding wall 10 (20).
- the first wall 8 (18) and the second wall 9 (19) come into contact with external impact loads due to poor rigidity as a shock absorber. Any “bottom-out phenomenon” occurs. Conversely, if it exceeds 60%, the rigidity increases too much and the shock absorbing property deteriorates.
- the connecting rib 26 is not limited to the concave groove having a U-shaped cross section shown in FIG. 5 or FIG. 12, but may have a V-shaped groove or two walls protruding into the hollow portion. It may be a plate-like member.
- the depth of the connecting rib 26 is 3.0 to 8.0 mm.
- connecting ribs are formed only on the first wall 8 (18) in FIGS. 1 and 11, the same connecting ribs may be formed on the second wall 9 (19). Good.
- the hollow body 4 (1) constituting the impact absorber 1 (1 1) of the automobile according to the present invention Four
- a parting line (not shown) is formed on the hollow body formed by professional molding by pinching off the divided molds 27 and 27 over substantially the entire circumference of the peripheral wall 10 (20). Further, a blow hole (not shown) is formed as a trace of piercing the blow nozzle.
- the partitioning line is located substantially at the center of the hollow body 4 (14) in the length direction, and is formed substantially all around the peripheral wall 10 (20).
- Example 1 An automobile shock absorber composed of a pump-beam-beam hollow body similar to that shown in Figs. 1 to 5 and described below was used.
- Pamper beam Bumper beam with a box-shaped cross section made of high-tensile steel sheet
- Hollow body The one shown in Figs. Its dimensions were 100 mm X 40 m ⁇ i X l 200 mm and the average wall thickness was 1.0 mm.
- the inner diameter of the concave rib is ⁇ i> 20 mni on the surface side of both the first wall 8 and the second wall 9 and ⁇ 10 mm on the fusion side.
- the connecting rib has a concave shape, and is the sum of all imaginary straight lines g including the first wall 8, the second wall 9, and the peripheral wall 10. The ratio of the total length of all connecting ribs to the length is 25%.
- polypropylene “AD571” flexible modulus 1050 MPa
- Sumitomo Mitsui Chemicals, Inc. was used. .
- Example 2 Further, the shock absorber of the automobile using the hollow body having the plate-like ribs shown in Figs. 11 to 13 in the configuration of Fig. 6 was used.
- the shock absorber of the automobile shown in FIGS. 1 to 5 has the same configuration except that the presence or absence of a plate-like lip and the arrangement of the connecting lip are different.
- Comparative Example uses a polyurethane foam instead of the hollow body of the example.
- FIG. 16 shows the evaluations of Examples 1 and 2 and Comparative Examples.
- FIG. 16 is a graph obtained by subjecting the impact absorbers of Examples 1 and 2 and Comparative Example to a collision test machine.
- This impact tester is a collision tester manufactured by Hodogaya Giken Co., Ltd., which is a 20- kg columnar impactor with a tip of 70 mm and a length of 16 O mm. They collided at a speed of km / h.
- the comparative example has a smaller shock absorbing power than the example.
- the impact absorption value is the area surrounded by the curve below the curve and the horizontal axis, but the comparative example has a lower absorptivity because the slope immediately after the collision is gentler than that of the example.
- the foamed polyurethane since the foamed polyurethane is used as the foam, the foamed polyurethane is broken apart by the collision. As a result, the broken pieces generate rattles and noises in the bumper, and cannot be used again once impacted.
- An automobile shock absorber 1 (11) according to an embodiment of the present invention Since the hollow body 4 (14) made of plastic is interposed between the bumper beam 3 (13) and the pump facer 2 (12), the impact absorber 1 (11) is connected.
- the high impact value (20 kN or more) when the equipped vehicle collides or comes into contact with another vehicle or another object is absorbed by the pumper beam 3 (13).
- the low impact value (less than 5 kN) at the time of contact or contact is absorbed by hollow body 4 (14).
- the hollow body 4 can be configured so that it can be restored to its original shape after being crushed with respect to a low impact value and can be repeatedly used.
- the structure of the second embodiment is particularly excellent in shock absorption performance immediately after a shock is applied, and can maintain higher shock absorption performance.
- the impact absorber for vehicles according to the present invention is provided inside vehicle components such as doors, body side panels, roof panels, pillars, bumpers and the like of automobiles and the like, to significantly improve the impact absorption of those portions. This greatly contributes to improving the safety of vehicles.
- vehicle components such as doors, body side panels, roof panels, pillars, bumpers and the like of automobiles and the like. This greatly contributes to improving the safety of vehicles.
- a bumper beam made of metal or plastic on the vehicle body side and arranging a hollow body made of plastic on the bumper face side, collision with other automobiles or other objects can be prevented.
- An automobile shock absorber with excellent functionality and design that not only absorbs high impact values (20 kN or more) during corrosion but can also respond to low impact values (5 kN or less). Obtainable.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT04732804T ATE465053T1 (de) | 2003-05-14 | 2004-05-13 | Stossdämpfer für ein auto |
DE602004026715T DE602004026715D1 (de) | 2003-05-14 | 2004-05-13 | Stossdämpfer für ein auto |
US10/553,544 US7370893B2 (en) | 2003-05-14 | 2004-05-13 | Impact absorbing member for motor vehicle |
EP04732804A EP1623880B1 (en) | 2003-05-14 | 2004-05-13 | Shock absorber of car |
JP2005506235A JP4554515B2 (ja) | 2003-05-14 | 2004-05-13 | 自動車の衝撃吸収体 |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003135249 | 2003-05-14 | ||
JP2003-135249 | 2003-05-14 | ||
JP2003-373396 | 2003-10-31 | ||
JP2003373396 | 2003-10-31 | ||
JP2003435957 | 2003-12-26 | ||
JP2003-435957 | 2003-12-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004101323A1 true WO2004101323A1 (ja) | 2004-11-25 |
Family
ID=33458351
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/006776 WO2004101323A1 (ja) | 2003-05-14 | 2004-05-13 | 自動車の衝撃吸収体 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7370893B2 (ja) |
EP (1) | EP1623880B1 (ja) |
JP (1) | JP4554515B2 (ja) |
AT (1) | ATE465053T1 (ja) |
DE (1) | DE602004026715D1 (ja) |
WO (1) | WO2004101323A1 (ja) |
Cited By (2)
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JP2006151250A (ja) * | 2004-11-30 | 2006-06-15 | Kyoraku Co Ltd | 車両用衝撃吸収体 |
CN107010116A (zh) * | 2016-07-15 | 2017-08-04 | 湖南大学 | 汽车碰撞缓冲吸能梁结构及其制造工艺 |
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US7533912B2 (en) * | 2007-06-12 | 2009-05-19 | Ford Global Technologies, Llc | Hybrid energy absorber for automobile bumper |
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US20100320780A1 (en) * | 2009-06-18 | 2010-12-23 | B Green Innovations, Inc. | Composite vehicle bumper using recycled rubber |
CN102933431B (zh) * | 2010-05-28 | 2016-03-16 | 京洛株式会社 | 冲击吸收体 |
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CN105121230B (zh) | 2013-03-20 | 2017-05-24 | 夏伊洛工业公司 | 用于车辆的能量吸收组件 |
US9682676B2 (en) * | 2013-09-26 | 2017-06-20 | Kyoraku Co., Ltd. | Impact absorber |
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EP3175979B1 (en) * | 2014-07-31 | 2020-03-04 | KOMATSU MATERE Co., Ltd. | Molded object and process for producing same |
US10632946B2 (en) * | 2015-07-21 | 2020-04-28 | Magna International Inc. | Bumper beam |
US10065587B2 (en) | 2015-11-23 | 2018-09-04 | Flex|N|Gate Corporation | Multi-layer energy absorber |
WO2017090628A1 (ja) * | 2015-11-27 | 2017-06-01 | キョーラク株式会社 | 衝撃吸収体 |
US10099639B1 (en) * | 2017-05-16 | 2018-10-16 | Ford Global Technologies, Llc | Energy absorbing device |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58194942U (ja) | 1982-06-21 | 1983-12-24 | 昭和電工株式会社 | 合成樹脂製バンパ− |
JPS6318281Y2 (ja) * | 1982-05-12 | 1988-05-23 | ||
JPH0246418A (ja) | 1988-08-06 | 1990-02-15 | Sankyo Seiki Mfg Co Ltd | 光走査装置 |
JPH0433165U (ja) | 1990-07-13 | 1992-03-18 | ||
JP2714567B2 (ja) | 1989-05-15 | 1998-02-16 | みのる産業 株式会社 | バンパーレインホースメント |
JP2001239573A (ja) | 2000-02-29 | 2001-09-04 | Kyoraku Co Ltd | 中空体の製造方法およびその装置 |
JP2001341516A (ja) | 2000-05-31 | 2001-12-11 | Kyoraku Co Ltd | 自動車用空調ダクト |
JP2002029340A (ja) * | 2000-07-14 | 2002-01-29 | Kyoraku Co Ltd | 自動車のバンパー |
JP2002187508A (ja) | 2000-12-19 | 2002-07-02 | Kyoraku Co Ltd | 自動車の衝撃吸収部材 |
JP2002193057A (ja) | 2000-12-26 | 2002-07-10 | Kyoraku Co Ltd | 自動車用中空体 |
JP3313999B2 (ja) | 1997-03-13 | 2002-08-12 | キョーラク株式会社 | 車両用衝撃吸収体 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56103349U (ja) | 1980-01-11 | 1981-08-13 | ||
JPS5732555U (ja) | 1980-07-31 | 1982-02-20 | ||
JPS60184754U (ja) | 1984-05-18 | 1985-12-07 | スズキ株式会社 | ブロ−成形バンパの取付構造 |
JPH02299947A (ja) | 1989-02-21 | 1990-12-12 | Nippon G Ii Plast Kk | 車両用樹脂バンパー |
JP3130071B2 (ja) | 1990-09-29 | 2001-01-31 | マツダ株式会社 | 車両のバンパー構造体 |
JP3320817B2 (ja) | 1993-03-05 | 2002-09-03 | 三菱アルミニウム株式会社 | 自動車用バンパービームおよびその製造方法 |
JPH06328988A (ja) | 1993-03-23 | 1994-11-29 | Toupure Kk | 車両用バンパービーム |
JPH06344837A (ja) | 1993-06-04 | 1994-12-20 | Nippon Steel Corp | スタンパブルシート製バンパービーム |
JP3699568B2 (ja) | 1997-07-23 | 2005-09-28 | 本田技研工業株式会社 | 樹脂製バンパービームの製造方法及び樹脂製バンパービーム |
JP4016514B2 (ja) | 1998-12-28 | 2007-12-05 | 日本精工株式会社 | トロイダル型無段変速機 |
US6406079B2 (en) | 2000-07-14 | 2002-06-18 | Kyoraku Co., Ltd. | Automobile bumper core |
US20040174025A1 (en) | 2003-03-07 | 2004-09-09 | General Electric Company | Blow molded energy absorber for a vehicle front end |
-
2004
- 2004-05-13 WO PCT/JP2004/006776 patent/WO2004101323A1/ja active Application Filing
- 2004-05-13 EP EP04732804A patent/EP1623880B1/en not_active Expired - Lifetime
- 2004-05-13 US US10/553,544 patent/US7370893B2/en active Active
- 2004-05-13 AT AT04732804T patent/ATE465053T1/de not_active IP Right Cessation
- 2004-05-13 JP JP2005506235A patent/JP4554515B2/ja not_active Expired - Fee Related
- 2004-05-13 DE DE602004026715T patent/DE602004026715D1/de not_active Expired - Lifetime
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6318281Y2 (ja) * | 1982-05-12 | 1988-05-23 | ||
JPS58194942U (ja) | 1982-06-21 | 1983-12-24 | 昭和電工株式会社 | 合成樹脂製バンパ− |
JPH0246418A (ja) | 1988-08-06 | 1990-02-15 | Sankyo Seiki Mfg Co Ltd | 光走査装置 |
JP2714567B2 (ja) | 1989-05-15 | 1998-02-16 | みのる産業 株式会社 | バンパーレインホースメント |
JPH0433165U (ja) | 1990-07-13 | 1992-03-18 | ||
JP3313999B2 (ja) | 1997-03-13 | 2002-08-12 | キョーラク株式会社 | 車両用衝撃吸収体 |
JP2001239573A (ja) | 2000-02-29 | 2001-09-04 | Kyoraku Co Ltd | 中空体の製造方法およびその装置 |
JP2001341516A (ja) | 2000-05-31 | 2001-12-11 | Kyoraku Co Ltd | 自動車用空調ダクト |
JP2002029340A (ja) * | 2000-07-14 | 2002-01-29 | Kyoraku Co Ltd | 自動車のバンパー |
JP2002187508A (ja) | 2000-12-19 | 2002-07-02 | Kyoraku Co Ltd | 自動車の衝撃吸収部材 |
JP2002193057A (ja) | 2000-12-26 | 2002-07-10 | Kyoraku Co Ltd | 自動車用中空体 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006151250A (ja) * | 2004-11-30 | 2006-06-15 | Kyoraku Co Ltd | 車両用衝撃吸収体 |
JP4559200B2 (ja) * | 2004-11-30 | 2010-10-06 | キョーラク株式会社 | 衝撃吸収体 |
CN107010116A (zh) * | 2016-07-15 | 2017-08-04 | 湖南大学 | 汽车碰撞缓冲吸能梁结构及其制造工艺 |
Also Published As
Publication number | Publication date |
---|---|
DE602004026715D1 (de) | 2010-06-02 |
JPWO2004101323A1 (ja) | 2006-07-13 |
US7370893B2 (en) | 2008-05-13 |
EP1623880A1 (en) | 2006-02-08 |
US20060255601A1 (en) | 2006-11-16 |
JP4554515B2 (ja) | 2010-09-29 |
ATE465053T1 (de) | 2010-05-15 |
EP1623880A4 (en) | 2006-06-14 |
EP1623880B1 (en) | 2010-04-21 |
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