WO2014148513A1 - サスペンションリンク及びその製造方法 - Google Patents
サスペンションリンク及びその製造方法 Download PDFInfo
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- WO2014148513A1 WO2014148513A1 PCT/JP2014/057410 JP2014057410W WO2014148513A1 WO 2014148513 A1 WO2014148513 A1 WO 2014148513A1 JP 2014057410 W JP2014057410 W JP 2014057410W WO 2014148513 A1 WO2014148513 A1 WO 2014148513A1
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- Prior art keywords
- suspension
- connecting portion
- plate material
- tire
- bent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/001—Suspension arms, e.g. constructional features
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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
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G3/00—Resilient suspensions for a single wheel
- B60G3/02—Resilient suspensions for a single wheel with a single pivoted arm
- B60G3/04—Resilient suspensions for a single wheel with a single pivoted arm the arm being essentially transverse to the longitudinal axis of the vehicle
- B60G3/06—Resilient suspensions for a single wheel with a single pivoted arm the arm being essentially transverse to the longitudinal axis of the vehicle the arm being rigid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/10—Independent suspensions
- B60G2200/14—Independent suspensions with lateral arms
- B60G2200/142—Independent suspensions with lateral arms with a single lateral arm, e.g. MacPherson type
-
- 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
- B60G2206/10—Constructional features of arms
- B60G2206/11—Constructional features of arms the arm being a radius or track or torque or steering rod or stabiliser end link
-
- 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
- B60G2206/722—Plates
-
- 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
- B60G2206/8102—Shaping by stamping
-
- 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
- B60G2206/82—Joining
- B60G2206/8209—Joining by deformation
Definitions
- the present invention relates to a suspension link that is a component part of a suspension.
- the suspension link which is a component part of the suspension and connects the tire and the suspension main body, is generally provided with a connecting portion for connecting the suspension link, the tire, and the subframe of the suspension. There is a part connected to the tire and the subframe by welding a collar to a main body of a suspension link made of, for example, a plate-like member (see Patent Document 1).
- the main body portion of the suspension link is press-molded into a predetermined shape, a collar is welded to the main body portion of the suspension link as a connection portion with the subframe, and a bush is press-fitted therein.
- a conventional suspension link is likely to have a relatively high cost due to the large number of plate-shaped member forming steps and the number of parts, and a cost reduction is required.
- the main body portion of the suspension link and the collar are often joined at the thickness portion of the suspension link main body portion. Therefore, if the plate thickness of the main body of the suspension link is simply reduced to reduce the cost, the thickness of the main body will be reduced, and the contact area with the collar will be reduced. There is a possibility that the welding is easily peeled off and the strength of the connecting portion cannot be satisfied.
- an object of the present invention is to provide a suspension link that is excellent in reliability such as the strength of the connecting portion of the suspension link at a low cost.
- the present invention that achieves the above object is a method for manufacturing a suspension link having a tire connecting portion that rotatably connects a tire to a suspension, and a suspension connecting portion that is connected to a frame-like member constituting the suspension.
- a bending step of bending a plate material forming a bent portion of the bent plate material into a hollow shape, and using the hollow shape as one connecting portion in a tire connecting portion or a suspension connecting portion
- an edge bending step of bending the outer peripheral edge of the plate material in front is bent by the edge bending process.
- the present invention is a suspension link having a tire connecting portion that rotatably connects a tire to a suspension and a suspension connecting portion that is connected to a frame-like member constituting the suspension.
- the suspension link according to the present invention is formed of a plate material, and one connection portion of the tire connection portion or the suspension connection portion is formed by a bent portion obtained by bending the plate material into a hollow shape, and the tire connection portion and the suspension connection portion are connected.
- the outer peripheral edge part of the plate material including the part from the arm to the tire connecting part or the suspension connecting part is raised and formed.
- either the tire connecting portion or the suspension connecting portion is configured by forming a bent portion obtained by bending the plate material into a hollow shape. Therefore, it is possible to reduce the number of locations where the collar is welded as the tire connecting portion or the suspension connecting portion, or it is possible to reduce the cost of parts for the collar by eliminating the need for color welding or the number of welding steps.
- the connecting portion formed by bending the plate material into a hollow shape is opposed to input from a tire or the like at the entire bent portion, unlike the conventional case where a part of the side surface of the collar is joined to the suspension link body. .
- the boundary between the arm and the bent portion can be further improved in strength when a tensile force acts on the suspension link. It is possible to further reduce the situation in which cracks and the like enter.
- FIG. 2A and 2B are a plan view and a front view showing a blank material subjected to punching in the suspension link forming step.
- 3A and 3B are a plan view and a front view showing a blank material in which a rising portion is formed in the molding step.
- 4 (A) and 4 (B) are a plan view and a front view showing a blank material having an edge raised in the molding step.
- Drawing (A) and (B) are the top views and front views showing the state where the blank material was bent in the forming process.
- 6A and 6B are a plan view and a front view showing a state in which a bush is press-fitted into the suspension link in the molding step.
- FIGS. 7A and 7B are cross-sectional views showing the rising portion forming step in the suspension link forming step according to the present embodiment.
- FIGS. 8A and 8B are cross-sectional views showing the edge bending step in the suspension link forming step, and are cross-sectional views taken along line 8-8 in FIG.
- FIGS. 9A and 9B are cross-sectional views showing the bending step in the suspension link forming step.
- FIGS. 10A and 10B are cross-sectional views showing the bending step in the suspension link forming step.
- FIG. 11A is a perspective view showing a suspension link according to a modification of the present invention
- FIG. 11B is a plan view showing a plate material before the suspension link is bent.
- FIG. 12A is a cross-sectional view taken along the line 12-12 in FIG. 6, and FIGS. 12B and 12C are cross-sectional views showing a modification of FIG. 12A. It is sectional drawing which shows the modification of FIG. 8 (B). It is a top view which shows the suspension link of FIG. 11 (A) and 11 (B).
- 15 (A) to 15 (D) are a side view, a front view, a perspective view, and a plan view showing the processing of the plate material in the punching process, and FIG. 15 (E) is an explanation showing a proximity portion between the plate material pieces after punching.
- FIG. FIG. 16 is a cross-sectional view taken along line 16A-16A in FIG.
- FIG. 1 is a schematic perspective view showing a suspension link according to an embodiment of the present invention
- FIGS. 2A and 2B are a plan view and a front view showing a blank material punched in the suspension link forming step
- FIG. 3 (A) and 3 (B) are a plan view and a front view showing a plate material in which a rising portion is formed in the same forming step
- FIGS. 4 (A) and 4 (B) are edges in the same forming step.
- FIGS. 5A and 5B are a plan view and a front view showing a state in which the plate material is bent in the molding process
- FIGS. 6A and 6B are diagrams showing a bushing on the suspension link in the molding process. It is the top view and front view which show the state press-fitted.
- the suspension link 100 is formed by press-molding a single plate material.
- the suspension link 100 includes a first connecting portion 11 that is connected to a component (such as a knuckle) connected to a tire, a second connecting portion 12 that is connected to a frame-shaped member that constitutes a suspension, a first connecting portion 11, and a first connecting portion 11. And an arm 15 that connects the two connecting portions 12. Since the suspension link 100 according to the present embodiment is composed of a single plate material, it is possible to reduce the cost of components, and also has specifications such as reliability of component strength as will be described later. Yes. Details will be described below.
- 1st connection part 11 is formed by shape
- the cross-sectional shape of the bent portion 23 can be a so-called D-shape combining a perfect circle, an ellipse other than a true circle, a curve, and a straight line.
- the second connecting portion 12 has both end portions in the longitudinal direction of the long plate member 10 so as to be connected to a subframe (sometimes called a frame, a suspension member, etc. corresponding to a frame-like member) constituting the suspension.
- the through holes 25 and 26 are formed by punching, and the plate material 10 is bent so that the through holes 25 and 26 communicate with each other.
- a component connected to the tire is attached to the first connecting portion 11 and a suspension subframe is attached to the second connecting portion 12, but the attached component is a tire-side component. And the subframe of the suspension may be reversed.
- the arm 15 is a part that connects the first connecting part 11 and the second connecting part 12 and is formed in a straight line shape in the present embodiment, but is not limited thereto, and is not limited to a curved line or other parts when mounted on the vehicle. In order to avoid parts, you may comprise in the shape etc. which the curved shape and the linear shape combined. Further, the arm 15 corresponds to a shape connecting the through holes 25 and 26 from the bent portions 23 in the plate material pieces 21 and 22 formed by bending the plate material 10. Although the board
- the rising portions 13 and 14 are formed to separate the plate material piece 21 and the plate material piece 22 in the second connecting portion 12 when the plate material 10 is bent.
- the parts on the vehicle body side are attached through the through holes 25 and 26 of the plate material pieces 21 and 22.
- the fixing position of the subframe of the suspension by the plate material pieces 21 and 22 can be separated and even when an external force is applied.
- the sub-frame of the suspension can be made difficult to fall down, and the posture of the attached component can be stabilized and the attachment property can be improved.
- the bush 92 is attached to the second connecting portion 12, but the same effect can be achieved by separating the plate pieces 21 and 22 when the bush 92 is attached.
- the edge portion 16 is a portion formed by raising the edge portion of the plate material 10 in a direction away from the contact position of the plate material pieces 21 and 22 from the surface where the plate material pieces 21 and 22 overlap.
- FIGS. 7A and 7B are cross-sectional views showing a rising portion forming step in the suspension link forming step according to the present embodiment
- FIGS. 8A and 8B are edges in the suspension link forming step. It is sectional drawing shown about a bending process.
- 9 (A), 9 (B), 10 (A), and 10 (B) are cross-sectional views showing the bending step in the suspension link forming step.
- the manufacturing method of the suspension link 100 generally includes a connecting portion forming step (corresponding to a punching step), a rising portion forming step, an edge bending step, and a plate material bending step.
- the manufacturing method of the suspension link 100 is not limited to the following method. Each step will be described in detail below.
- a plate material such as a rolled steel plate is stamped and formed into an outer shape as shown in FIG. 2 in a flattened state before the above process. Since the 2nd connection part 12 is comprised by letting an attachment component penetrate the plane of the board
- the plate member 10 is placed on the fixed mold 204, and the movable mold 201 having a predetermined uneven shape is directed to the fixed mold 204 from the opposite direction to the fixed mold 204, as shown in FIG. And press forming (see arrow d1 in FIGS. 7A and 7B).
- the holders 202 and 203 are opposed to the movable mold 201 across the blank material 10 in addition to the fixed mold 204, and the blank material 10 is prevented from being excessively deformed by an elastic force such as a spring.
- the raised portions 13 and 14 are formed on the plate member 10 by clamping with the fixed die 204, the movable die 201, and the holders 202 and 203.
- the plate material 10 is placed on the fixed molds 213 and 214 and the holder 212 as shown in FIG. 8A, and the movable mold 211 having the holder convex shape 211a is lowered from above in FIG. 8A.
- the plate member 10 is pressurized (see arrow d2 in FIGS. 8A and 8B).
- edges 16 a and 16 b are formed on the left and right sides of the plate member 10 as the holder 212 is moved downward by the convex shape 211 a of the movable die 211.
- the edge portion 16 is provided on the entire outer periphery of the plate member 10, but the edge portion 16 may be formed not on the entire periphery but on a part thereof.
- the plate material 10 on which the rising portions 13 and 14 are formed is placed on the fixed mold 221 having the recess 221a.
- press molding is performed by bringing a movable die 222 having a tip half the shape of a cylinder close to the concave portion 221a of the fixed die 221 so that a portion to be a bent portion 23 is formed inside the concave portion 221a (FIG. 9A).
- FIG. 9A See arrows d3 in (A) and (B)).
- the plate material 10 is bent starting from the bent portion 23 as shown in FIG. 9B, and the plate material pieces 21 and 22 stand up so as to approach the side surface of the movable die 222.
- the plate member 10 is mounted on the fixed mold 231 in a state where the core 227 is disposed inside the bent portion 23 of the plate member 10, and the plate member 10 is fixed. Then, the movable mold 232 is moved toward the fixed mold 231 and press molding is performed on the plate material 10 (see arrows d4 in FIGS. 10A and 10B). As a result, the plate material piece 21 and the plate material piece 22 come into contact with each other at the portion of the arm 15, and the shape of the bent portion 23 is completed, whereby the suspension link 100 is completed.
- the plate material pieces 21 and 22 in the arm 15 are in contact with each other when the bent portion 23 is completed, but the portions may be joined by welding or the like.
- bushes 91 and 92 may be inserted into the first connecting portion 11 and the second connecting portion 12 as necessary.
- a collar or the like is welded and joined to the side surface portion of the main body portion of the suspension link made of a plate material which is only thick. Therefore, the joint portion of the suspension link main body portion with the collar has only a plate thickness, so that a welded portion cannot be secured so much that the welded portion may be peeled off when an external force is applied.
- the suspension link 100 is configured as the first connecting portion 11 in a hollow circular shape that is formed when the plate member 10 is bent and formed in the bending step. Therefore, unless the first connecting part 11 is pulled to such an extent that the plate material is broken, the parts connected to the first connecting part 11 are not separated from the first connecting part 11. Therefore, the tensile strength of the connecting portion can be strengthened as compared with the case where the collar is welded to the main body portion of the suspension link made of a plate material as in the prior art. In addition, since the collar is not welded, the cost of the collar and the welding cost can be reduced. Therefore, it is possible to provide a suspension link that is excellent in reliability such as the strength of the connecting portion while being low in cost.
- the strength of the boundary between the arm and the bent part can be further improved when a tensile force acts on the suspension link. It is possible to further reduce the situation in which cracks and the like enter.
- the outer peripheral edge portion of the suspension link 100 is formed as an edge portion 16 in the edge bending step before the bending step. Therefore, even if an input of bending or twisting is applied to the first connecting portion 11, the second connecting portion 12, or the arm 15, it can be firmly countered and the strength of the suspension link can be improved.
- the second connecting portion 12 is constituted by through holes 25 and 26 formed by punching both ends in the longitudinal direction of the long plate material 10 in the punching step before the bending step. Therefore, the connecting parts other than the first connecting part 11 can also eliminate the cost of the parts and the welding cost of the collar compared to the conventional case where the collar is welded, and can contribute to the cost reduction of the suspension link.
- the plate material pieces 21 and 22 in the second mounting portion 12 are formed so as not to contact or contact each other in a state of facing each other. Therefore, even if an external force is applied when the frame-like member is attached, the frame-like member can be made difficult to fall down, and the attachment of the component to be connected by stabilizing the posture of the component attached to the second connecting portion 12 is improved. Can be good.
- FIG. 11 (A) is a perspective view showing a suspension link according to a modification of the present invention
- FIG. 11 (B) is a plan view showing a state before a plate material constituting the suspension link is bent.
- the suspension link 100 has been described with respect to the embodiment having the first connecting part 11 formed by bending a plate material into a hollow shape and the second connecting part 12 configured by the through holes 25 and 26, the present invention is not limited to this.
- the bent portion 23 of the plate material 10a is bent to divide the plate material 10a into a plate material piece 22b and a plate material piece 21a, and is constituted by a hollow first connecting portion 11 and a through hole.
- the connecting portion having the second connecting portion 17 and the third connecting portion 18 may be three suspension links.
- the second connecting portion 12 is punched at both ends of the plate material 10 so that the suspension subframe can be attached, and the plate material piece 21 and the plate material piece 22 are separated from the contact or contact positions.
- the second connecting portion is formed in a semicircular cylindrical shape at the portion corresponding to the second connecting portion of the plate material pieces 21 and 22, and the two butted portions are butted and fixed in a cylindrical shape by welding or caulking or the like. May be configured.
- plate material pieces 21 and 22 demonstrated the embodiment which contact
- connection part 12 punched the both ends of the board
- FIG. 12A is a cross-sectional view taken along line 12-12 in FIG. 6,
- FIGS. 12B and 12C are cross-sectional views showing a modification of FIG. 12A, and
- FIG. 13 is FIG. 8B. It is sectional drawing which shows this modification.
- the embodiment has been described in which the edge portion of the plate material extending in the longitudinal direction is raised in the edge bending step to form the edge portion 16 to improve the strength of the suspension link. It is not limited to.
- the strength of the suspension link can be improved by forming a plate material piece with a space formed therein.
- a hollow reinforcing portion 16a (corresponding to another hollow shape) formed by abutting the two.
- the hollow reinforcing portion 16a can be formed by changing the molds 211, 212, and 214 shown in FIG. 8B into the molds 211a and 212a as shown in FIG.
- the present invention is not limited to this.
- the hollow reinforcing portion 16a may be formed on the suspension link 100 shown in FIG. 1 or may be formed on the suspension link 100a shown in FIG. Further, the hollow reinforcing portion 16a may be formed on both plate pieces as shown in FIG. 12B, or may be formed only on one plate piece.
- FIG. 14 is a plan view showing the suspension link of FIGS. 11 (A) and 11 (B).
- the suspension link 100a includes a tire connecting portion T, suspension connecting portions S1 and S2, and an arm 15a.
- the suspension link input from the vehicle longitudinal direction (arrow P2 in FIG. 14) is particularly severe, and the suspension link may be designed to satisfy the strength.
- the arm 15a connecting the tire connecting portion T and the suspension connecting portions S1 and S2 is reinforced by not only the edge portion 16 but also the hollow reinforcing portion 16a, thereby suppressing an increase in weight and parts cost. It can be performed.
- the shape of the suspension link is as shown in FIG. 14, the location of the two-dot chain line P1 tends to bend easily due to the input from the front-rear direction P2. It is preferable to be formed.
- the hollow reinforcing portion 16 a is formed on at least one of the arms 15 connecting the first connecting portion 11 and the second connecting portion 12.
- the up-down direction corresponds to the left-right direction of the vehicle
- the upper side corresponds to the inner side
- the lower side corresponds to the outer side.
- the suspension coupling portions S1 and S2 are desirably arranged along the vehicle front-rear direction in order to counter the input from the front-rear direction.
- the suspension connecting portions S1 and S2 are arranged along the vehicle front-rear direction.
- the imaginary line C1 in FIG. 14 extends from the center of the suspension coupling part S2 along the vehicle longitudinal direction, and the imaginary line C1 passes through the central axis of the suspension coupling part S1.
- the suspension connecting portions S1 and S2 are arranged along the vehicle front-rear direction, so that the input from the vehicle front-rear direction can be directly opposed without any angular displacement, and the strength and the like are required with a simple shape.
- the specification can be met. It should be noted that a plurality of tire connecting portions may be configured instead of the suspension connecting portions, and they may be arranged along the vehicle front-rear direction.
- FIG. 15A to 15D are a side view, a front view, a perspective view, and a plan view showing the processing of the plate material in the punching process
- FIG. 15E illustrates a proximity portion between the plate material pieces after punching. It is explanatory drawing to do.
- FIG. 16 is a cross-sectional view taken along line 16A-16A in FIG.
- the punching process is performed in a predetermined shape in a state where the plate material before punching is flattened, but the present invention is not limited to this.
- a suspension link 100a having three fastening points as shown in FIG. 11 is considered, the lower part of FIG. 15 (E) of the plate material pieces 21a and 22a divided by the bent portions 23 is close to a portion S1. ing. Therefore, if the plate member 10a is bent in a flat state, the proximity portion S1 in FIG. 15E is close, so that the completed suspension link projects one outer shape of the connecting portion to the other along the vehicle longitudinal direction. In some cases, it may not be formed so as to be included in the other outer shape (see the plate material piece 21b in FIG. 15E).
- the connecting portion forming step Punching step
- the outer shape other than the portion S1 of the plate material 10b shown in FIG. Then, as shown in FIGS. 15 (A) to 15 (D), at least a part of the bent portion 23 of the plate 10b is stretched to form a bulging portion 27 that protrudes from the flat plate 10b (bulging). This will be referred to as a part forming step).
- the bulging portion 27 is bent as an axis a ⁇ b> 1 at the time of bending in the bending process, and the bent portion 23 including the bulging portion 27 is integrated with the bulging portion 27 (FIG. 16).
- the hollow shape as shown in FIG. 11 is formed.
- the bent portion 23 extends linearly between the plate piece 21b and the plate piece 22a (see arrow d5 in FIG. 15D), and the axis a1 is inclined from the plane portion of the bent portion 23 (see FIG. 16). ) And intersects with the direction d5 in which the bent portion 23 extends.
- either the tire connecting portion or the suspension connecting portion is configured by bending the plate material as in this embodiment. And the scope of application of the present embodiment can be expanded. Note that the bulging portion forming step may be performed with the edge of the plate material raised, or may be performed without raising.
- the bent portion can be formed in a uniform shape and components such as a bush can be attached.
- the punching process for punching the outer shape of the plate material may be performed at the time of punching the through holes 25 and 26 described in the above embodiment (connecting part forming process), or may be performed separately.
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Abstract
Description
100、100a サスペンションリンク、
11 第1連結部(タイヤ連結部)、
12、17 第2連結部(サスペンション連結部)、
13、14 立ち上げ部、
15 アーム(つなぎ部)、
16 縁部、
16a 中空補強部(他の中空形状)、
18 第3連結部、
21、21a、22、22a 板材片、
23 折り曲げ箇所、
24 折り重ね箇所、
25,26 貫通孔(第1貫通孔、第2貫通孔)、
27 膨出部、
91、92 ブッシュ、
204、213、214、221、231 固定型、
201、211、214、222、232 可動型、
202、203、212 ホルダ、
211a 凸形状、
221a 凹部、
227 中子
a1 軸、
d1~d4 可動型の移動方向、
d5 折り曲げ箇所の伸びる方向、
S1 板材片同士の近接部位。
Claims (13)
- タイヤをサスペンションに回転可能に連結するタイヤ連結部と、サスペンションを構成するフレーム状部材に連結されるサスペンション連結部と、を有するサスペンションリンクの製造方法であって、
板材を折り曲げ、折り曲げた板材の折り曲げ部を中空形状に成形し、前記中空形状を前記タイヤ連結部及び前記サスペンション連結部における一方の連結部とする折り曲げ工程と、
前記折り曲げ工程の前に前記板材の外周縁部を折り曲げる縁曲げ工程と、を有し、
前記縁曲げ工程によって、前記タイヤ連結部と前記サスペンション連結部とを接続するアームから前記タイヤ連結部または前記サスペンション連結部となる前記折り曲げ部に至るまでの部位を含む前記板材の外周縁部が折り曲げられることを特徴とするサスペンションリンクの製造方法。 - 前記折り曲げ工程の前に長尺状の前記板材の長手方向における少なくとも一方の端部を打ち抜いて貫通孔を形成する打ち抜き工程をさらに有し、
前記タイヤ連結部及び前記サスペンション連結部における他方の前記連結部は、前記打ち抜き工程によって形成された前記貫通孔によって構成される請求項1または2に記載のサスペンションリンクの製造方法。 - 前記折り曲げ工程において前記板材は前記折り曲げ部によって2以上の板材片に分割され、前記打ち抜き工程において一の板材片には第1貫通孔が形成され、他の前記板材片には第2貫通孔とが形成され、
前記折り曲げ工程では、前記第1貫通孔と前記第2貫通孔とが挿通し、かつ、前記第1貫通孔における前記一の板材片と前記第2貫通孔において前記一の板材片と向かい合う前記他の板材片とが離間するように前記板材を折り曲げる請求項3に記載のサスペンションリンクの製造方法。 - 前記折り曲げ工程の前に平面状の前記板材の前記折り曲げ部を少なくとも一部引き延ばすことによって、平面状の前記板材の前記折り曲げ部から突出した膨出部を形成する膨出部形成工程をさらに有する請求項1に記載のサスペンションリンクの製造方法。
- 前記膨出部形成工程の後で、前記折り曲げ工程において前記膨出部を含む前記折り曲げ部を折り曲げて前記中空形状を形成する請求項4に記載のサスペンションの製造方法。
- 前記タイヤ連結部または前記サスペンション連結部は2以上で構成され、2以上の前記タイヤ連結部または前記サスペンション連結部は車両前後方向に沿って配置される請求項1から5のいずれか1項に記載のサスペンションリンクの製造方法。
- タイヤをサスペンションに回転可能に連結するタイヤ連結部と、サスペンションを構成するフレーム状部材に連結されるサスペンション連結部と、を有するサスペンションリンクであって、
前記サスペンションリンクは板材から形成され、
前記タイヤ連結部及び前記サスペンション連結部における一方の連結部は、前記板材を中空形状に折り曲げた折り曲げ部によって構成され、
前記タイヤ連結部と前記サスペンション連結部とを接続するアームから前記タイヤ連結部または前記サスペンション連結部に至るまでの部位を含む前記板材の外周縁部が立ち上げて形成されていることを特徴とするサスペンションリンク。 - 前記タイヤ連結部及び前記サスペンション連結部における他方の前記連結部は、長尺状の前記板材の長手方向における少なくとも一方の端部に設けられた貫通孔によって構成される請求項7に記載のサスペンションリンク。
- 前記板材は折り曲げ部によって分割された2以上の板材片を有し、
前記タイヤ連結部または前記サスペンション連結部における他の前記連結部は、少なくとも2以上の前記板材片を挿通する前記貫通孔によって構成され、前記他の連結部における一の前記板材片と前記一の板材片と向かい合う他の前記板材片とは離間して配置される請求項7または8に記載のサスペンションリンク。 - 前記板材は、折り曲げ部によって分割された2以上の板材片を有し、
一の前記板材片と他の前記板材片とを内部に空間を形成した状態で突き合わせて形成した他の中空形状をさらに有する請求項7から9のいずれか1項に記載のサスペンションリンク。 - 前記他の中空形状は、車体及びタイヤに取付けて平面視した際に、前記タイヤ連結部と前記サスペンション連結部とをつなぐつなぎ部の縁部に形成される請求項10に記載のサスペンションリンク。
- 前記折り曲げ部には、ブッシュが取り付けられる請求項7から11のいずれか1項に記載のサスペンションリンク。
- 前記タイヤ連結部または前記サスペンション連結部は2以上で構成され、2以上の前記タイヤ連結部または前記サスペンション連結部は車両前後方向に沿って配置される請求項7から12のいずれか1項に記載のサスペンションリンク。
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CN105142939A (zh) | 2015-12-09 |
US20160107494A1 (en) | 2016-04-21 |
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EP2977240A4 (en) | 2016-04-06 |
EP2977240B1 (en) | 2020-05-06 |
KR20150134366A (ko) | 2015-12-01 |
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RU2015143131A (ru) | 2017-04-26 |
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JPWO2014148513A1 (ja) | 2017-02-16 |
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