WO2011040623A1 - 曲がり部材およびその製造方法 - Google Patents
曲がり部材およびその製造方法 Download PDFInfo
- Publication number
- WO2011040623A1 WO2011040623A1 PCT/JP2010/067312 JP2010067312W WO2011040623A1 WO 2011040623 A1 WO2011040623 A1 WO 2011040623A1 JP 2010067312 W JP2010067312 W JP 2010067312W WO 2011040623 A1 WO2011040623 A1 WO 2011040623A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bending
- bent
- bent member
- forming
- strength
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
- B21D5/015—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments for making tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/14—Making tubes from double flat material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
- B21D47/01—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
- E04C3/07—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web at least partly of bent or otherwise deformed strip- or sheet-like material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
- E04C2003/0413—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
- E04C2003/0439—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the cross-section comprising open parts and hollow parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
- E04C2003/0465—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section square- or rectangular-shaped
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12229—Intermediate article [e.g., blank, etc.]
Definitions
- the present invention relates to a method of forming a flat plate into a bent member (specifically, a frame member having a bent shape), and in particular, enables formation of a bent member from a high strength steel plate having a tensile strength (TS) of 590 MPa or more.
- the present invention relates to a forming method, a bent member, and a bent member manufacturing method.
- press molding (hereinafter, referred to as conventional press molding) in which various types of molding methods such as drawing, stretching, stretching flange and bending are performed on a single metal plate is performed. Furthermore, a method of bending a cylindrical member (Patent Document 1), a roll forming technique (Patent Document 2), and a bending process using a hollow member (Patent Documents 3 and 4) have been proposed. As an example of reinforcing the bent member, a method of filling a foamed resin (Patent Document 5) has been proposed.
- a single sheet of high-strength steel plate having a TS of 590 MPa or more is formed into members 50A and 50B (having XY plan view and Z-axis direction bending) constituting the bending member 50 as shown in FIG. 11 by conventional press forming.
- wrinkles for example, generated in “wrinkled” portions in the drawing
- cracks for example, generated in “broken” portions in the illustrated portion
- Patent Documents 1 to 4 a method of bending a cylindrical member or obtaining a high-strength bent member by roll forming is disclosed (Patent Documents 1 to 4), but from the viewpoint of process restrictions and material formability.
- it is difficult to obtain a complicated bent shape and there are significant problems in production such as an increase in the number of processes.
- Patent Document 5 a technique for obtaining a reinforcing effect by filling with a foamed resin. It is hard to say that the technology is always useful from the viewpoint of production or recycling.
- a bending member forming method comprising: a bending step of bending into a cross-sectional shape corresponding to a divided portion of the shape; and a bonding step of bonding two or more members obtained by the bending step.
- the material undergoes bending deformation with almost no deformation of the drawing, overhanging, and extension flange, it is possible to perform integral press molding from a single sheet of high-strength steel sheet to a member constituting the bending member. . Furthermore, by reflecting the shape of the bent member as the forming target in the contour shape of the blank, it is possible to easily obtain a member having a high member strength and a complicated bent shape, which has not been obtained conventionally, and reducing the cross-section of the part Higher weight savings can be expected by expanding the space by reducing the thickness of the plate or eliminating the reinforcement member.
- Schematic showing an example of an embodiment of the present invention Schematic which shows one example (an example different from the previous example) of an embodiment of the present invention
- Schematic which shows one example (an example different from the previous example) of an embodiment of the present invention Schematic which shows one example (an example different from the previous example) of an embodiment of the present invention
- Sectional drawing which shows the example of various bending member cross-sectional shape
- FIGS. 1 and 2 are both examples in which the bending of the bending member 30 in the length direction is a bent line-shaped bending in only one of the two reciprocal directions.
- the cross-sectional size is the member length direction.
- the cross-sectional size changes in the member length direction.
- 3 and 4 are both examples in which the bending in the length direction of the bending member 30 is a bent line-shaped curve that changes from one of the two opposite directions to the other, and in FIG.
- the size is constant in the member length direction, and the cross-sectional size is changed in the member length direction in FIG. 5, FIG. 6, FIG. 7, and FIG.
- FIGS. 8 are examples in which the bending in the length direction of the bending member 30 is a continuous curved curve in only one of two reciprocal directions (FIG. 7, FIG. 8: an example having a twisted bent cross-sectional shape in the length direction), and the cross-sectional size is constant in the member length direction in FIG. 5, and the cross-sectional size is in the member length direction in FIGS. Has changed.
- the two blanks 1 and 2 have the same planar shape, and this planar shape is a side curved contour shape corresponding to the bending in the length direction of the bending member 30 which is a forming target. .
- the blanks 1 and 2 may be preliminarily provided with shapes such as work holes and beads.
- the blanks 1 and 2 are bent into a cross-sectional shape corresponding to a divided portion of the cross-sectional shape of the bending member 30 to be members 10 and 20 constituting the bending member 30, respectively.
- 1F and 2F are the flange corresponding parts of the blanks 1 and 2, or the flanges of the members 10 and 20, respectively.
- broken lines and dotted lines drawn in the shape regions of the blanks 1 and 2 are respectively a mountain fold and a valley fold, and these are bent portions (convex ridge portions) formed by bending in the bending process. , Concave ridges) are shown.
- the material to be molded is deformed by the bending process so that the molding part of the blank becomes a corresponding bending part of the target member by using a die, and the target shape is deformed. To be molded.
- the members 10 and 20 are joined to obtain the bent member 30.
- any method such as welding, caulking, rivet, or adhesive may be used.
- the examples shown in FIGS. 1 to 6 are examples of molding into the member cross-sectional shape shown in FIG. 9A, but the present invention is not limited to this, for example, as shown in FIG. 9B.
- the shape of the member is reversed to the left and right, or the member 20 is bent into the shape of the member having the flange 2F bent as shown in FIG. 9C. Applicable to.
- the example shown in FIGS. 7 and 8 is an example of forming the member cross-sectional shape shown in FIG.
- FIGS. 1 to 6 and FIG. 8 are examples using two blanks having the same planar shape for one bending member, the present invention is not limited to this, Even when three or more blanks are used for one bent member, and at least one of the blanks has a different planar shape from the other, it can be obviously applied. Furthermore, in the present invention, in order to improve the positional accuracy of the bent portion during the bending process, it is preferable to crease the mountain fold and valley fold portions in the blank in advance. It should be noted that the crease is not limited to being applied (continuously) over the entire portion corresponding to the bent portion, and may be applied to only a part of the portion (intermittently) according to circumstances. Good.
- a V-groove as shown in FIG. 10 (d) is provided in the form of a line (a), a broken line (b), a dotted line (c), or a combination of these. Is mentioned.
- the depth of the V-groove is preferably 20% or less of the metal plate thickness (abbreviated plate thickness).
- the shape of the groove is not limited to the V shape (not limited to the V groove illustrated in FIG. 10D), and may be various concave shapes such as a U shape. Moreover, when taking the curvature radius of a bending part large, you may provide a several groove
- a blank made of a thin steel plate (material symbols A, B, C) having the thickness and tensile properties (yield strength YS, tensile strength TS, elongation El) shown in Table 1 is bent by the forming method shown in Table 2.
- the shape of the obtained bent member was visually observed to evaluate the forming method.
- Table 2 in the comparative example by the conventional press molding, wrinkles were generated in the “wrinkled” portion shown in FIG. Then, there was no generation of cracks and wrinkles, and a bent member almost according to the target shape was obtained.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
(1) 金属単板からなるブランクを成形して曲がり部材を得る曲がり部材成形方法であって、前記曲がり部材の長さ方向の曲がりに対応する曲がり輪郭形状にしたブランクを、前記曲がり部材の断面形状の分割部分に対応する断面形状に折り曲げる曲げ工程と、前記曲げ工程により得られた2つ以上の部材を接合する接合工程とを有することを特徴とする曲がり部材成形方法。
(2) 前記曲げ工程の前に、前記ブランクに折り目をつけ、あるいはさらに切れ目を入れることを特徴とする(1)に記載の曲がり部材成形方法。
(3) (1)または(2)に記載された曲がり部材成形方法を用いて製造されてなる曲がり部材。
(4) (1)または(2)に記載された曲がり部材成形方法を用いて、曲がり部材を製造することを特徴とする曲がり部材製造方法。
また、図1~図6に示した例は、図9(a)に示す部材断面形状への成形例であるが、本発明はこれに限定されるものではなく、例えば図9(b)のように、図9(a)を左右反転した部材断面形状への成形や、図9(c)のように、構成部材20のみフランジ2Fを曲げた部材断面形状への成形等々に対しても自明に適用できる。なお、図7、図8に示した例は、図9(d)に示す部材断面形状への成形例である。
さらに、本発明では、曲げ加工の際に前記折り曲げ部の位置精度を向上させるために、ブランクにおける前記山折り、谷折りの箇所に、予め折り目をつけることが好ましい。なお、折り目は、曲げ加工部に対応する箇所の全部にわたって(連続的に)つけることのみに限定されるものではなく、場合に応じて当該箇所の一部のみに(断続的に)つけてもよい。この折り目をつける加工方法には、コイニング等が好ましく用いうる。また、ロール表面につけた凹凸形状を連続的に材料の表面に転写していく方法も挙げられる。かかる折り目の好適形態として、図10(d)に示すようなV溝を、線状(a)、破線状(b)または点線状(c)、あるいはこれらを組み合わせた複合線状に設けた形態が挙げられる。ここで、V溝の深さは金属板厚み(略して板厚)の20%以下が好ましい。V溝の深さが板厚の20%を超える場合は、自動車骨格部材等で必要とされる部材強度の低下、あるいは折り曲げ部に割れを発生させる可能性があり、さらに高強度の金属材料においては、溝を深くすること自体が容易ではなく、生産面やコスト面に大きな問題があるためである。
また、折り曲げの際に局部的に過大な伸びまたは縮み変形加工が加わって割れまたはしわが発生する危険性が高いと予想される局所(例えばブランクのフランジ対応箇所において過大な伸びまたは縮みフランジ加工を受けそうな複数の局所)が存在する場合、かかる局所に予め切れ目を入れておくと、割れまたはしわの発生をさらに確実に予防できて好ましい。
1F,2F フランジまたはフランジ対応箇所
10,20 本発明に係る曲がり部材を構成する部材
30 本発明に係る曲がり部材(成形目標)
50 従来プレス成形による曲がり部材(添え符号A,Bは曲がり部材50を構成する部材)
Claims (3)
- 金属単板からなるブランクを成形して曲がり部材を得る曲がり部材成形方法であって、前記曲がり部材の長さ方向の曲がりに対応する曲がり輪郭形状にしたブランクを、前記曲がり部材の断面形状の分割部分に対応する断面形状に折り曲げる曲げ工程と、前記曲げ工程により得られた2つ以上の部材を接合する接合工程とを有することを特徴とする曲がり部材成形方法。
- 前記曲げ工程の前に、前記ブランクに折り目をつけ、あるいはさらに切れ目を入れることを特徴とする請求項1に記載の曲がり部材成形方法。
- 請求項1または2に記載された曲がり部材成形方法を用いて製造されてなる曲がり部材。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10820735.8A EP2484461B1 (en) | 2009-09-29 | 2010-09-28 | Bent member and method for manufacturing same |
KR1020127005931A KR101443990B1 (ko) | 2009-09-29 | 2010-09-28 | 굽힘 부재 및 그 제조 방법 |
CN201080043047.6A CN102574192B (zh) | 2009-09-29 | 2010-09-28 | 弯曲部件及其制造方法 |
CA 2772925 CA2772925C (en) | 2009-09-29 | 2010-09-28 | Curved parts and method for manufacturing the same |
US13/395,477 US20120171506A1 (en) | 2009-09-29 | 2010-09-28 | Curved parts and method for manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2009-224515 | 2009-09-29 | ||
JP2009224515A JP5515566B2 (ja) | 2009-09-29 | 2009-09-29 | 曲がり部材成形方法および曲がり部材ならびに曲がり部材製造方法 |
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WO2011040623A1 true WO2011040623A1 (ja) | 2011-04-07 |
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PCT/JP2010/067312 WO2011040623A1 (ja) | 2009-09-29 | 2010-09-28 | 曲がり部材およびその製造方法 |
Country Status (7)
Country | Link |
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US (1) | US20120171506A1 (ja) |
EP (1) | EP2484461B1 (ja) |
JP (1) | JP5515566B2 (ja) |
KR (1) | KR101443990B1 (ja) |
CN (1) | CN102574192B (ja) |
CA (1) | CA2772925C (ja) |
WO (1) | WO2011040623A1 (ja) |
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JP2013013934A (ja) * | 2011-06-08 | 2013-01-24 | Jfe Steel Corp | 立体縁付き金属部品の製造方法 |
EP2543515A3 (en) * | 2011-07-06 | 2015-03-25 | Ricoh Company Ltd. | Bending member, rail member and image-forming apparatus |
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DE102015226474A1 (de) * | 2015-12-22 | 2017-06-22 | Thyssenkrupp Ag | Halbzeug für die Herstellung von Hohlprofilen, Hohlprofile hieraus sowie Verfahren zu deren Herstellung |
US10665387B2 (en) * | 2016-05-10 | 2020-05-26 | GM Global Technology Operations LLC | Method of fabrication of a curvilinear magnet |
EP3379001B1 (de) * | 2017-03-22 | 2020-01-08 | Marte and Marte Limited Zweigniederlassung Österreich | Beliebig gekrümmte tragstruktur |
US10428522B2 (en) * | 2017-09-25 | 2019-10-01 | Pravin Nanayakkara | Construction metallic trapezoidal systems |
JP2022042636A (ja) * | 2020-09-03 | 2022-03-15 | プレス工業株式会社 | 車体フレーム用部材、及び車体フレーム用部材の製造方法 |
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US7263869B2 (en) * | 2000-08-17 | 2007-09-04 | Industrial Origami, Inc. | Method for forming sheet material with bend controlling grooves defining a continuous web across a bend line |
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- 2010-09-28 KR KR1020127005931A patent/KR101443990B1/ko active IP Right Grant
- 2010-09-28 CN CN201080043047.6A patent/CN102574192B/zh active Active
- 2010-09-28 EP EP10820735.8A patent/EP2484461B1/en active Active
- 2010-09-28 WO PCT/JP2010/067312 patent/WO2011040623A1/ja active Application Filing
- 2010-09-28 US US13/395,477 patent/US20120171506A1/en not_active Abandoned
- 2010-09-28 CA CA 2772925 patent/CA2772925C/en not_active Expired - Fee Related
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2013013934A (ja) * | 2011-06-08 | 2013-01-24 | Jfe Steel Corp | 立体縁付き金属部品の製造方法 |
EP2543515A3 (en) * | 2011-07-06 | 2015-03-25 | Ricoh Company Ltd. | Bending member, rail member and image-forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
CN102574192A (zh) | 2012-07-11 |
CA2772925A1 (en) | 2011-04-07 |
JP5515566B2 (ja) | 2014-06-11 |
JP2011073010A (ja) | 2011-04-14 |
CN102574192B (zh) | 2015-07-01 |
CA2772925C (en) | 2015-02-03 |
KR20120055616A (ko) | 2012-05-31 |
EP2484461A4 (en) | 2015-06-03 |
EP2484461B1 (en) | 2018-04-18 |
KR101443990B1 (ko) | 2014-09-23 |
US20120171506A1 (en) | 2012-07-05 |
EP2484461A1 (en) | 2012-08-08 |
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