WO2005018966A1 - 車両用高応力スタビライザー - Google Patents
車両用高応力スタビライザー Download PDFInfo
- Publication number
- WO2005018966A1 WO2005018966A1 PCT/JP2004/012011 JP2004012011W WO2005018966A1 WO 2005018966 A1 WO2005018966 A1 WO 2005018966A1 JP 2004012011 W JP2004012011 W JP 2004012011W WO 2005018966 A1 WO2005018966 A1 WO 2005018966A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stress
- stabilizer
- bent portion
- vehicle
- bent parts
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
- B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
- B60G21/055—Stabiliser bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/40—Constructional features of dampers and/or springs
- B60G2206/42—Springs
- B60G2206/427—Stabiliser bars or tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/70—Materials used in suspensions
- B60G2206/72—Steel
- B60G2206/724—Wires, bars or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/80—Manufacturing procedures
- B60G2206/81—Shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/80—Manufacturing procedures
- B60G2206/81—Shaping
- B60G2206/8103—Shaping by folding or bending
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/80—Manufacturing procedures
- B60G2206/81—Shaping
- B60G2206/8103—Shaping by folding or bending
- B60G2206/81035—Shaping by folding or bending involving heating to relieve internal stresses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/80—Manufacturing procedures
- B60G2206/81—Shaping
- B60G2206/811—Shaping by cutting
Definitions
- Such a stabilizer has a complicated shape in which the middle part in the longitudinal direction has a curved shape at multiple points in order to avoid interference with the lower structure of the vehicle body and the suspension system, and is generally mounted on the vehicle.
- a torsion portion extending in the width direction of the vehicle in a state of being moved, and arm portions extending from the left and right ends of the torsion portion in the front-rear direction of the vehicle.
- a continuous portion between the torsion portion and each arm portion is formed into an arc shape and provided with a bent portion.
- the torsion portion is connected to the vehicle body via a rubber bush, a bracket and the like.
- a link member is connected to a tip portion of the arm portion by a bolt or the like, and the arm portion is connected to an axle-side member such as a suspension arm via the link member.
- the stabilizer 1 is configured to apply an elastic reaction force to the member on the axle side to suppress rolling of the vehicle body.
- Patent Document 1 JP-A-7-215038
- an object of the present invention is to provide a high-stress stabilizer for vehicles having a long fatigue life at a bent portion and excellent durability.
- a high-stress stabilizer for a vehicle is a high-stress stabilizer for a vehicle formed by bending a solid round bar steel material and forming the same.
- the material diameter of the round bar material is d
- the bending radius of the bent portion is R
- the short diameter of the cross section of the bent portion is d1
- the long diameter of the cross section of the bent portion is d2
- the flatness of the cross section of the bent portion is ⁇ .
- the bending radius R, the flatness of the cross section, and the material diameter d before bending are generally predetermined at the bending portion where the maximum stress is applied and the breakage is most likely. It is set within the range.
- the material diameter d and the bending radius R of the bent portion are values that are individually set for each vehicle type. That is, the high-stress stabilizer for a vehicle has a flatness ⁇ of a cross section of a bent portion set within a predetermined range in accordance with a value of a material diameter d and a bending radius R of a bent portion set in advance. . This allows for Thus, the stress concentration of the shear stress generated in the bent portion is suppressed, and breakage of the vehicle stabilizer due to the stress concentration in the bent portion can be prevented.
- the high-stress stabilizer for a vehicle according to the present invention is characterized in that it is used under a stress of 500 MPa or more.
- FIG. 1 is a front view showing a high-stress stabilizer for a vehicle according to an embodiment of the present invention.
- FIG. 2 is a side view showing a high-stress stabilizer for a vehicle according to an embodiment of the present invention.
- FIG. 3 is a perspective view showing a configuration of a bent portion of the high-stress stabilizer for a vehicle according to the embodiment of the present invention.
- FIG. 4 is a sectional view taken along the line II-III of FIG. 3.
- FIG. 5 is a plan view showing a configuration of a bent portion of the vehicle high stress stabilizer according to the embodiment of the present invention.
- FIG. 6 is a perspective view showing a test piece applied to a fatigue test of the high-stress stabilizer for a vehicle according to the embodiment of the present invention.
- FIG. 7 is a graph showing the relationship between the flattening ratio ⁇ and the number of repeated fractures when the applied stress is 550 MPa.
- FIG. 8 is a graph showing the relationship between the flatness ratio ⁇ X material diameter d / bending radius R and the number of times of rupture when the applied stress is 550 MPa.
- FIG. 9 is a graph showing the relationship between the flattening ratio ⁇ and the number of repeated fractures when the applied stress is 800 MPa.
- FIG. 10 is a graph showing the relationship between the flatness ratio ⁇ X material diameter d / bending radius R and the number of times of rupture when the applied stress is 800 MPa.
- FIG. 1 shows a front view of a high-stress stabilizer 10 for a vehicle (hereinafter, referred to as a stabilizer 10) according to an embodiment of the present invention.
- FIG. 2 also shows the side of the stabilizer 10 A plan view is shown.
- the stabilizer 10 is formed by hot bending a solid round bar material and immediately performing a quenching and tempering treatment, and is used under a high stress of 500 MPa or more.
- This stabilizer 10 has a complicated shape in which the middle part in the longitudinal direction is curved at a plurality of points in order to be mounted on the vehicle while avoiding interference with the lower structure of the vehicle body and the suspension device. It has a torsion portion 12 extending in the width direction of the vehicle (arrow WC direction), and an arm portion 14 extending from both left and right ends of the torsion portion 12 in the front-rear direction of the vehicle (arrow FR direction). .
- each arm part 14 is bent in a circular arc shape. Is provided. Further, continuous portions between the torsion portion 12 and the respective arm portions 14 are each formed into an arc shape and provided with a bent portion 16.
- a flat portion called a so-called tool mark 22 is formed on the outer periphery of the bent portion 16 due to contact with a mold during hot bending as shown in FIGS. 3 and 4, and the cross section of the bent portion 16 is reduced. It is flattened into a substantially D shape.
- the bent portion 16 will be described for simplicity.
- the shape of the bent portion 16 is such that the material diameter of the solid round bar steel material is d, the bending radius of the bent portion 16 is R, the minor diameter of the cross section of the bent portion 16 is dl, and the bent portion 16 is The major diameter of the cross section of d2 and the flatness ⁇ of the cross section of the bent portion 16 are
- the bending radius R of the bending portion 16 indicates the bending radius of the bending portion 16 along the center line SP as shown in FIG.
- the material diameter d of the solid round steel bar and the bending radius R of the bent portion are generally set individually for each vehicle type.
- FIG. 6 is a perspective view of a test piece 50 applied to a fatigue test of the stabilizer 10 according to the embodiment of the present invention.
- the test piece 50 is a JIS spring steel SUP9 round bar having a predetermined material diameter, which is hot-bent into a substantially U-shape and immediately quenched and tempered.
- the length was set to 800 mm, and the length of the arms 54 on both sides was set to 400 mm.
- the shape (bending radius R, cross-sectional flatness ⁇ , etc.) of the bent portion 56 of the test piece 50 was varied, and the numbers A1 to A8 and B1 to B8 as shown in Table 1 below.
- a total of 16 test pieces 50 were prepared. Although not shown, a tool mark is formed at the bent portion 56 of the test piece 50 in association with the hot bending force, similarly to the bent portion 16 of the stabilizer 10.
- test pieces 50 with numbers A1 to A8 as shown in Table 1 were formed so as to satisfy the relationship of ( ⁇ > X dZR) 2 with the shape force of the bent portion 0 and ⁇ 4 ( The present invention). That is, the bent portions 56 of the test pieces 50 with numbers A1 to A8 are equivalent to the bent portions 16 of the stabilizer 10.
- the test pieces 50 with numbers B1 to B8 were formed so that the bending force of the bent portion 56 was 0 ⁇ ⁇ 4, and did not satisfy the relationship of ( ⁇ XdZR) ⁇ 2 (Comparative Example).
- the fatigue test method is such that a test piece 50 is supported at two locations of a torsion portion 52, one arm portion 54 is fixed horizontally, and the other arm portion 54 is repeatedly tested through a rotating pin. Then, a load was repeatedly applied in a direction perpendicular to the other arm portion 54, and the number of times until the bending portion 56 between the other arm portion 54 and the torsion portion 52 was broken was measured.
- the load stress applied to the arm portion 54 of the test piece 50 is set to two types, 550 MPa and 800 MPa, and the test pieces 50 having numbers A1 to A4 and B1 to B4 are subjected to a test of 550 MPa, and the numbers are set to 550 MPa. Test pieces 50 of A5 to A8 and B5 to B8 were subjected to a test at 800 MPa.
- the bending angle of the other arm 54 is set to 90 degrees to 100 degrees.
- Table 2 shows the measurement results of the fatigue test when the applied stress was 550 MPa.
- Fig. 7 shows a graph of the relationship between the flattening ratio ⁇ and the number of fracture cycles in Table 2, and Fig. 7 shows a graph of the relationship between ( ⁇ X d / R) and the number of fracture cycles in Table 2.
- the mark is a test piece 50 (numbered A1) where the shape force of the bent portion 56 was 0 ⁇ 4 and the relationship of ( ⁇ X d / R) ⁇ 2 was satisfied.
- a to A4 indicate the measurement results of the test piece 50), and the mark ⁇ indicates that the force of the bent portion 56 was 0 ⁇ 4 and the force did not satisfy the relationship of ( ⁇ X d / R) ⁇ 2
- the measurement results of the test piece 50 (the test pieces 50 with numbers B1 to B4) are shown. According to Table 2, Fig. 4 and Fig. 5, when the applied stress force is 3 ⁇ 450MPa, both the relations of the shape force of the bent portion 56 ⁇ 0 ⁇ 4 and ( ⁇ X d / R) ⁇ 2 are satisfied. It can be seen that the test pieces 50 (the test pieces 50 with numbers A1 to A4) had the number of repeated fractures of 29.5 million or more.
- test piece 50 (the test piece 50 with the number B1 to B4) whose shape force of the bent portion 56 was 0 ⁇ 4 and did not satisfy the relationship of ( ⁇ X d / R) ⁇ 2 It can be seen that the number of repeated fractures was 120,000 or less.
- Table 3 shows the measurement results of the fatigue test at a load stress of 800 MPa.
- Fig. 9 shows a graph of the relationship between the flattening ratio ⁇ and the number of fracture cycles in Table 3, and Fig. 9 shows a graph of the relationship between ( ⁇ X d / R) and the number of fracture cycles in Table 3.
- Hata indicates that the test piece 50 (number: 0 ⁇ 4) satisfying the relationship of ( ⁇ X d / R) ⁇ 2 Indicates the measurement results of the test pieces 50) of A5 to A8, and the mark ⁇ indicates that the shape of the bent portion 56 satisfies the relationship of 0 ⁇ ⁇ 4 and ( ⁇ X d / R) ⁇ 2.
- the measurement results of the test piece 50 that was not provided are shown. From Table 3, Fig. 9 and Fig. 10, when the applied stress force is 3 ⁇ 400MPa, the shape of the bent portion 56 is 0
- test piece 50 (test pieces 50 with numbers A5 to A8) satisfying both the relations of ⁇ 4 and ( ⁇ X d / R) ⁇ 2 has a It turns out that it is more than times.
- test piece 50 (the test piece 50 with a number of B5 to B8) whose shape force of the bent portion 56 was 0 ⁇ 4 and did not satisfy the relationship of ( ⁇ X dZR) ⁇ 2 was broken. It can be seen that the number of repetitions is less than 21,000 times.
- the relationship between the shape of the bent portion 16 of the high-stress stabilizer 10 for a vehicle and the fatigue life has been described.
- the shapes of the bent portions 18 and 20 are also 0 and ⁇ . ⁇ 4 and ( ⁇ X d / R) ⁇ 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/569,787 US7500660B2 (en) | 2003-08-26 | 2004-08-20 | Vehicle stabilizer for high stress |
EP04771972A EP1661741B1 (en) | 2003-08-26 | 2004-08-20 | High stress stabilizer for vehicle |
CA2537253A CA2537253C (en) | 2003-08-26 | 2004-08-20 | Vehicle stabilizer for high stress |
DE602004027639T DE602004027639D1 (de) | 2003-08-26 | 2004-08-20 | Hochspannungsstabilisator für fahrzeug |
HK07102799.2A HK1097491A1 (en) | 2003-08-26 | 2007-03-15 | High stress stabilizer for vehicle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-301402 | 2003-08-26 | ||
JP2003301402A JP4087765B2 (ja) | 2003-08-26 | 2003-08-26 | 車両用高応力スタビライザー |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005018966A1 true WO2005018966A1 (ja) | 2005-03-03 |
Family
ID=34213889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/012011 WO2005018966A1 (ja) | 2003-08-26 | 2004-08-20 | 車両用高応力スタビライザー |
Country Status (8)
Country | Link |
---|---|
US (1) | US7500660B2 (ja) |
EP (1) | EP1661741B1 (ja) |
JP (1) | JP4087765B2 (ja) |
CN (1) | CN100447002C (ja) |
CA (1) | CA2537253C (ja) |
DE (1) | DE602004027639D1 (ja) |
HK (1) | HK1097491A1 (ja) |
WO (1) | WO2005018966A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2840037A (en) * | 1954-04-02 | 1958-06-24 | Howard V Schweitzer | Mechanical movement for coating apparatus |
DE10326858A1 (de) * | 2003-06-14 | 2005-01-13 | Daimlerchrysler Ag | Wattstrebe |
US20070257462A1 (en) * | 2006-05-02 | 2007-11-08 | Meritor Suspension Systems Company, Us | Die cast stabilizer bar ends |
DE102006054874A1 (de) * | 2006-11-20 | 2008-05-21 | Zf Friedrichshafen Ag | Stabilisatoreinrichtung mit Radführungslenker |
CN107725650A (zh) * | 2017-09-28 | 2018-02-23 | 浙江华莎驰机械有限公司 | 一种扭力式动态机械连接件 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07215038A (ja) | 1994-01-28 | 1995-08-15 | Nkk Corp | 耐久性に優れた中空スタビライザー |
JPH08142632A (ja) * | 1994-11-16 | 1996-06-04 | Nhk Spring Co Ltd | 中空スタビライザ |
JPH10324137A (ja) * | 1997-05-12 | 1998-12-08 | Muhr & Bender:Fa | 自動車用のスタビライザー |
JP2000024737A (ja) * | 1998-07-14 | 2000-01-25 | Mitsubishi Motors Corp | スタビライザバーの製造方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4231555A (en) * | 1978-06-12 | 1980-11-04 | Horikiri Spring Manufacturing Co., Ltd. | Bar-shaped torsion spring |
JPS5642741A (en) | 1979-09-18 | 1981-04-21 | Nhk Spring Co Ltd | Hollow stabilizer for vehicle |
FI90635C (sv) * | 1990-03-05 | 1994-03-10 | Imatra Steel Oy Ab | Förfarande och anordning för tillverkning av krängningshämmare |
JPH0641937A (ja) | 1992-07-22 | 1994-02-15 | Kaishin:Kk | 2段ゲート装置 |
JPH0641937U (ja) | 1992-11-13 | 1994-06-03 | 鈴木金属工業株式会社 | コイルばね成形用の成形ピン |
JPH07266837A (ja) * | 1994-03-29 | 1995-10-17 | Horikiri Bane Seisakusho:Kk | 中空スタビライザの製造法 |
JP3814710B2 (ja) | 1998-06-30 | 2006-08-30 | Jfe条鋼株式会社 | 高強度冷間成形非調質緩衝・復元機構部材用鋼材の製造方法 |
US6318710B1 (en) * | 2000-11-21 | 2001-11-20 | Meritor Suspension Systems Company | Stabilizer bars with variable cross-sectional properties |
JP2002331326A (ja) * | 2001-03-08 | 2002-11-19 | Nhk Spring Co Ltd | 中空スタビライザおよびその製造方法 |
JP2002283824A (ja) | 2001-03-29 | 2002-10-03 | Mitsubishi Steel Mfg Co Ltd | 車両用スタビライザ |
-
2003
- 2003-08-26 JP JP2003301402A patent/JP4087765B2/ja not_active Expired - Lifetime
-
2004
- 2004-08-20 CA CA2537253A patent/CA2537253C/en active Active
- 2004-08-20 CN CNB2004800244369A patent/CN100447002C/zh active Active
- 2004-08-20 WO PCT/JP2004/012011 patent/WO2005018966A1/ja active Application Filing
- 2004-08-20 US US10/569,787 patent/US7500660B2/en active Active
- 2004-08-20 DE DE602004027639T patent/DE602004027639D1/de active Active
- 2004-08-20 EP EP04771972A patent/EP1661741B1/en active Active
-
2007
- 2007-03-15 HK HK07102799.2A patent/HK1097491A1/xx unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07215038A (ja) | 1994-01-28 | 1995-08-15 | Nkk Corp | 耐久性に優れた中空スタビライザー |
JPH08142632A (ja) * | 1994-11-16 | 1996-06-04 | Nhk Spring Co Ltd | 中空スタビライザ |
JPH10324137A (ja) * | 1997-05-12 | 1998-12-08 | Muhr & Bender:Fa | 自動車用のスタビライザー |
JP2000024737A (ja) * | 1998-07-14 | 2000-01-25 | Mitsubishi Motors Corp | スタビライザバーの製造方法 |
Non-Patent Citations (3)
Title |
---|
See also references of EP1661741A4 |
SEKKEI HEN ET AL.: "The society of automotive engineers of Japan, Jidosha gijutsu hadbook", June 1992, pages: 476 - 477, XP002986208 * |
THE SOCIETY OF AUTOMOTIVE ENGINEERS OF JAPAN: "Jidosha kogaku handbook", May 1981, pages: 23, XP002986209 * |
Also Published As
Publication number | Publication date |
---|---|
EP1661741A4 (en) | 2006-12-06 |
EP1661741A1 (en) | 2006-05-31 |
US20070063473A1 (en) | 2007-03-22 |
HK1097491A1 (en) | 2007-08-24 |
US7500660B2 (en) | 2009-03-10 |
EP1661741B1 (en) | 2010-06-09 |
CA2537253A1 (en) | 2005-03-03 |
JP4087765B2 (ja) | 2008-05-21 |
JP2005066661A (ja) | 2005-03-17 |
CA2537253C (en) | 2010-04-27 |
CN1842423A (zh) | 2006-10-04 |
DE602004027639D1 (de) | 2010-07-22 |
CN100447002C (zh) | 2008-12-31 |
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