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WO2014136261A1 - Torsion beam type suspension - Google Patents

Torsion beam type suspension Download PDF

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Publication number
WO2014136261A1
WO2014136261A1 PCT/JP2013/056491 JP2013056491W WO2014136261A1 WO 2014136261 A1 WO2014136261 A1 WO 2014136261A1 JP 2013056491 W JP2013056491 W JP 2013056491W WO 2014136261 A1 WO2014136261 A1 WO 2014136261A1
Authority
WO
WIPO (PCT)
Prior art keywords
torsion beam
recess
vehicle body
upper member
arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2013/056491
Other languages
French (fr)
Japanese (ja)
Inventor
亮蔵 池内
紳司 田村
暢昭 寒川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yorozu Corp
Original Assignee
Yorozu Corp
Yorozu Jidosha Kogyo KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yorozu Corp, Yorozu Jidosha Kogyo KK filed Critical Yorozu Corp
Priority to PCT/JP2013/056491 priority Critical patent/WO2014136261A1/en
Publication of WO2014136261A1 publication Critical patent/WO2014136261A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • B60G21/051—Trailing arm twist beam axles
    • 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
    • B60G2206/20—Constructional features of semi-rigid axles, e.g. twist beam type axles

Definitions

  • the present invention relates to a torsion beam suspension in which the wheels of a vehicle are suspended by a suspension having a torsion beam.
  • a torsion beam is disposed between a pair of left and right trailing arms disposed generally in the longitudinal direction of the vehicle, and both ends of the torsion beam are welded to the trailing arms.
  • Patent Document 1 discloses a flat lower member constituting the trailing arm, a torsion beam and a curved upper member constituting the trailing arm. There is disclosed a technique of arranging and welding so as to straddle a bonding site.
  • the stress concentration site as described in Patent Document 1 may occur not only at the connection portion between the torsion beam and the trailing arm but also for the shape of each component of the torsion beam and the trailing arm.
  • the trailing arm is provided with various portions such as the connecting portion with the vehicle body and the wheel and the shape of a spring seat for absorbing an impact from the tire, the shape tends to be complicated.
  • the thickness of the trailing arm itself is increased in order to satisfy the stress and rigidity, the weight as the part becomes extremely large, the part cost becomes too high, and the fuel consumption performance of the automobile is increased. There is a problem such as giving a great influence on etc.
  • the present invention was invented to solve the above-mentioned problems, and it is an object of the present invention to provide a torsion beam type suspension capable of adjusting the strength and rigidity of a trailing arm without significantly increasing the weight.
  • the present invention for achieving the above object is a torsion beam type suspension in which a torsion beam extending in the left-right direction of the vehicle body is joined to left and right trailing arms extending in the front-rear direction of the vehicle body and swinging up and down.
  • the arm member is formed to have a recess, and the arm member is characterized in that a reinforcing member for reinforcing the arm member is joined at the recess.
  • the reinforcing member is joined in the concave portion of the arm member constituting the trailing arm to reinforce the arm member. Therefore, even if the shape of the arm member is complicated, the plate thickness of the entire arm member can not be increased or the increase amount of the plate thickness can be reduced by arranging and joining the reinforcing member at the predetermined position of the recess. The strength and rigidity of the trailing arm can be adjusted without significantly increasing the weight.
  • FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 2;
  • FIG. 4A is a front view of the reinforcing member, and
  • FIG. 4B is a right side view of the reinforcing member.
  • It is a top view showing a plate before welding a torsion beam, an upper member, and a spring seat.
  • FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. 5;
  • FIG. 7 is a cross-sectional view taken along line 7-7 of FIG. 5;
  • FIG. 1 is a schematic perspective view showing a torsion beam type suspension according to an embodiment of the present invention
  • FIG. 2 is a bottom view showing the same suspension
  • FIG. 3 is a sectional view taken along line 3-3 in FIG. 4A is a front view of the reinforcing member
  • FIG. 4B is a right side view of the reinforcing member.
  • the trailing arms 20 are disposed and joined at both ends of the torsion beam 10 which is disposed to extend in the left-right direction of the vehicle body.
  • a roll bar 30 for adjusting the roll rigidity is disposed inside the torsion beam 10.
  • the torsion beam 10 is a U-shaped beam, and is disposed so that the U-shaped opening portion faces downward when the vehicle is mounted.
  • the trailing arm 20 includes an upper member 21 (corresponding to an arm member) having a recess 25, a substantially flat lower member 26 (corresponding to a closing member), and a reinforcing member 27 disposed in the recess 25 of the upper member 21. And.
  • the upper member 21 is formed by press-forming a plate-like member, and a spring seat 24 which receives a spring that absorbs an impact from the tire, a connecting portion 22 with the torsion beam 10, a vehicle body connecting portion 23a, a wheel connecting portion 23b. And (corresponding to the mounting portion).
  • connection portion 22 with the torsion beam 10 is formed in substantially the same shape as the U-shape which is the cross-sectional shape of the torsion beam 10.
  • the vehicle body connecting portion 23a is a portion for pivotally supporting the vehicle body, and in the present embodiment, is configured by joining a collar 23e.
  • the wheel connecting portion 23b is a portion for supporting the wheel, and includes a plate 23c and a spindle 23d. In the present embodiment, the wheel is pivotally supported by providing the spindle 23 d on the plate 23 c.
  • the upper member 21 is press-formed to connect the connection portion 22 with the torsion beam 10, the vehicle body connecting portion 23a, and the wheel connecting portion 23b, thereby forming the recess 25.
  • the recess 25 is formed so as to extend from the connection portion 22 with the torsion beam 10 to the vehicle body connecting portion 23a and extends from the connection portion 22 with the torsion beam 10 to the wheel connecting portion 23b as shown in FIG. In addition, it is formed to extend from the vehicle body connecting portion 23a to the wheel connecting portion 23b. Although the shape of the recess 25 slightly changes depending on the mounting position of the torsion beam 10, it is generally formed so as to connect at least the wheel connecting portion 23b and the vehicle body connecting portion 23a.
  • the spring sheet 24 has a shape provided in the vicinity of a connection point with the torsion beam 10, and corresponds to a shape as a seat for receiving and supporting, for example, a coil-shaped spring. Since the spring seat 24 may narrow the indoor space of the vehicle body depending on the installation site, it is preferable to provide the spring seat 24 in the vicinity of the intersection of the torsion beam 10 and the trailing arm 20 as shown in FIG. Further, as shown in FIG. 3, a vertical wall 29 is formed in the vicinity of the spring seat 24 so that the spring does not slip off the spring seat 24 when an external force such as vibration is input.
  • the lower member 26 is a substantially flat member and is disposed so as to close the opening of the recess 25 of the upper member 21, and prevents the deformation of the upper member 21.
  • the lower member 26 is formed substantially the same as a projected shape when the shape of the upper member 21 is viewed in plan when mounted on a vehicle.
  • part which contacts the outer peripheral part of the upper member 21 is shape
  • the portion corresponding to the connection portion with the torsion beam 10 when attached to the upper member 21 is beyond the welded portion 22 of the upper member 21 and the torsion beam 10 to the torsion beam side as shown in FIG. It is formed to extend. Thereby, the welding part of the upper member 21 and the torsion beam 10 is reinforced.
  • the reinforcing member 27 is a member disposed in the recess 25 of the upper member 21 and is configured as, for example, a plate-like member in the present embodiment.
  • the reinforcing member 27 is joined in contact with the inner surface of the upper member 21 in which the recess 25 exists so that the reinforcing member 27 can be joined to the wall surface of the recess 25 of the upper member 21 as shown in FIG.
  • the reinforcing member 27 crosses the recess 25 It is desirable to place in By arranging in this manner, the deformation of the recess 25 can be effectively suppressed, and the occurrence of a high stress area and a low rigidity area can be reduced.
  • the reinforcing member 27 is disposed so as to cross the recess 25 and is flat in the vehicle mounted state. It is preferable to arrange
  • the reinforcing member 27 is joined to the upper member 21 by welding, for example, but the manner of joining may be performed using an adhesive or the like other than the above.
  • the reinforcing member 27 has a joint portion 28 with the lower member 26 among the walls of the recess 25.
  • the joint portion 28 is formed into a rectangular shape with rounded corners by bending the flat reinforcing member 27 at a substantially right angle, but is not limited thereto.
  • the lower member 26 and the reinforcing member 27 can be connected. Therefore, it is possible to reinforce the high stress generating portion and the low rigidity portion which may be generated in the upper member 21 in a state where the lower member 26 and the reinforcing member 27 are combined. Therefore, compared with the case where the lower member 26 or the reinforcing member 27 is reinforced alone, the high stress generation site and the low rigidity site can be reinforced more effectively.
  • the members such as the torsion beam 10, the upper member 21, the lower member 26, and the roll bar 30 are formed of rolled steel plates having a thickness of, for example, about 1 to 2 mm, but are not limited thereto.
  • the thickness of the reinforcing member 27 and the specification as to how the reinforcing member 27 is joined to the wall surface of the recess 25 are the shape of the torsion beam 10, the upper member 21, the lower member 26, and the roll bar 30, and the upper member 21. It is determined based on conditions such as load input. Further, although the corner portions and the corner portions of the upper member 21 and the spring seat 24 may or may not be illustrated as R-shaped in FIGS. 1, 2 and 3, the difference between them is due to the convenience of illustration. The shape of the said part is the same.
  • FIG. 5 is a plan view showing the torsion beam, the upper member, and the plate before welding the spring seat
  • FIG. 6 is a sectional view taken along line 6-6 in FIG. 5
  • FIG. 7 is a sectional view taken along line 7-7 in FIG.
  • FIG. 8 is a schematic view showing the relationship between the welding wire of the plate members constituting the torsion beam, the upper member, and the spring seat and the lower member.
  • the substantially trapezoidal plate 10 p is a plate that is formed into the torsion beam 10 by forming, the substantially bowl-like plate 21 p becomes the upper member 21 by forming, and the rectangular plate 24 p becomes the spring sheet 24.
  • these shapes can be appropriately selected according to the actual product shape.
  • the plate thickness t2 of the plate member 21p used for the upper member 21 is preferably thinner than the plate thickness t1 of the plate member 10p used for the torsion beam 10 as shown in FIG.
  • the plate thickness t3 of the plate 24p used for the spring sheet 24 is preferably larger than the plate thickness t2 of the upper member 21 as shown in FIG. 7 because the strength of the spring sheet 24 to which a load is applied is improved.
  • the plate thickness t3 of the plate 24p of the spring sheet 24 may be thicker than the plate thickness t1 of the plate 10p of the torsion beam 10 to further enhance the strength.
  • the plate thicknesses of the plate members 10p, 21p and 24p may be different from each other, but at least the plate thicknesses of the plate members 10p and 21p are different in consideration of the improvement of the torsional rigidity of the torsion beam 10 and the strength of the trailing arm 20. It is preferable to
  • a weld line W1 is formed between the plate material 10p used for the torsion beam 10 and the plate material 21p by butt welding as shown in FIG. 8, and a weld line W2 is formed between the plate material 24p used for the spring sheet 24 and the plate material 10p.
  • a weld line W3 is formed between the plate 21p and the plate 24p.
  • welding lines W1, W2 and W3 shown by broken lines in FIG. 8 are formed on the upper member 10, and a tailored blank material in which two or more plate materials having different plate thicknesses are joined is formed.
  • the tailored blank material to which three plate members are joined is press-formed.
  • the torsion beam 11 has a U-shaped cross section perpendicular to the longitudinal direction
  • the upper member 21 has a recess 25 extending from the connecting portion 22 with the torsion beam 10 toward the vehicle connecting portion 23a and the wheel connecting portion 23b.
  • the spring seat 24 is formed on a seat that receives the spring.
  • the roll bar 30 is inserted through the upper member 21.
  • the reinforcing members 27 are respectively disposed and welded to the recessed portions 25 so as to be orthogonal to the centers of the spring seats 24 in the left and right upper members 21.
  • the lower member 26 is placed so as to cover the upper member 21, and the edge of the upper member 21 and the joint portion 28 of the reinforcing member 27 are welded to the lower member 26.
  • the collar 23e and the plate 23c are welded to complete the torsion beam type suspension 100.
  • the upper member 21 constituting the trailing arm 20 needs to be provided with the connection portion 22 with the torsion beam 10, the vehicle body connecting portion 23a, and the wheel connecting portion 23b, so the shape is easily complicated. Further, also in the case of suspension parts, weight reduction of parts is required for fuel efficiency performance, and therefore, it is necessary to make a plate material which is a material of the trailing arm 20 and the torsion beam 10 as thin as possible. If a thin plate material is formed into a complicated shape, a high stress area and a low rigidity area are easily generated. However, in the torsion beam type suspension 100 according to the present embodiment, the reinforcement member 27 is disposed in the recess 25 of the upper member 21. It is joined.
  • the reinforcing member 27 is disposed and joined so as to intersect the recess 25 extending so as to connect the vehicle body connecting portion 23a and the wheel connecting portion 23b in the upper member 21. Therefore, the deformation of the recess 25 in the upper member 21 can be effectively suppressed, and the generation of the high stressed portion and the low rigidity portion can be effectively suppressed.
  • the reinforcing member 27 can directly oppose the input of the spring by intersecting the recess 25 and arranging the reinforcing member 27 at a radial position from the spring seat 24, and by further suppressing the deformation of the recess 25, the height can be increased. It is possible to more effectively suppress the occurrence of stressed portions and low rigidity portions.
  • the reinforcing member 27 is joined to the lower member 26 by the joint portion 28 so as to close the opening of the recess 25 in the arm member 21. Therefore, the reinforcing member 27 and the lower member 26 are not independent of each other, but can be connected to each other to suppress the deformation or the like of the upper member 21, thereby effectively reinforcing the low rigidity portion or the like of the upper member 21. be able to.
  • the invention is not limited thereto, and bonding may be performed by an adhesive like joining of the reinforcing member 27 and the upper member 21.
  • reinforcing member 27 has been described in the embodiment in which one each of the left and right trailing arms 20 is provided, the number of the reinforcing members 27 is not limited to one and may be plural.
  • 10 torsion beams 10p plate material before forming the torsion beam, 100 torsion beam suspension, 20 trailing arms, 21 upper member (arm member), 21p plate material before forming upper member, 22 Connection with the torsion beam, 23a body connecting part, 23b wheel connection, 23c plate, 23d spindle, 23e color, 24 spring seat (mounting part), 24p Spring sheet before forming, 25 recesses, 26 lower member (closing member), 26a Curved surface shape, 27 reinforcement members, 28 Joint with lower member, 29 vertical walls, 30 roll bars, W1, W2, W3 welding wire, t1, t2, t3 thickness.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

[Problem] To provide a torsion beam type suspension which enables the adjustment of the strength and rigidity of a trailing arm without greatly increasing the weight thereof. [Solution] The present invention is a torsion beam type suspension (100) configured by joining right and left trailing arms (20) which each extend in the front-rear direction of a vehicle body and swing vertically, and a torsion beam (10) which extends in the right-left direction of the vehicle body and connects the right and left trailing arms, wherein the right and left trailing arms each have an upper member (21) formed so as to have a recessed portion (25), and a reinforcement member (27) for reinforcing the upper member is joined to the upper member in the recessed portion.

Description

トーションビーム式サスペンションTorsion beam type suspension

　本発明は、トーションビームを有するサスペンションによって車両の車輪を懸架したトーションビーム式サスペンションに関する。 The present invention relates to a torsion beam suspension in which the wheels of a vehicle are suspended by a suspension having a torsion beam.

　トーションビーム式サスペンションは、概して車両の前後方向に配置された左右一対のトレーリングアーム間にトーションビームを配置し、トーションビームの両端部をトレーリングアームに溶接している。 In the torsion beam type suspension, a torsion beam is disposed between a pair of left and right trailing arms disposed generally in the longitudinal direction of the vehicle, and both ends of the torsion beam are welded to the trailing arms.

　トレーリングアーム及びトーションビームは、板材をプレス成形することによって製造されるが、部品コストを抑え、燃費性能などをよくするために板材の板厚をできるだけ薄くすることが行われる。しかし、板厚を薄くするとサスペンションのロール剛性、トー剛性、及びキャンバー剛性等が低くなりすぎたり、操縦安定性を満足させることが難しくなったり、高応力部位が発生するといった問題が発生し易い。特許文献１にはトレーリングアームとトーションビームとの接合部の応力集中を回避するために、トレーリングアームを構成する平板状のロア部材を、トーションビームとトレーリングアームを構成する湾曲したアッパー部材との接合部位を跨るように配置して溶接するといった技術が開示されている。 The trailing arm and the torsion beam are manufactured by press-forming a plate material, but the plate thickness is made as thin as possible in order to reduce parts cost and improve fuel efficiency and the like. However, if the plate thickness is reduced, problems such as excessive reduction in roll stiffness, toe stiffness, and camber stiffness of the suspension, difficulty in satisfying steering stability, and occurrence of high stress sites tend to occur. In order to avoid stress concentration at the junction between the trailing arm and the torsion beam, Patent Document 1 discloses a flat lower member constituting the trailing arm, a torsion beam and a curved upper member constituting the trailing arm. There is disclosed a technique of arranging and welding so as to straddle a bonding site.

特開２０１０－２０８５４９号公報JP, 2010-208549, A

　特許文献１のような応力集中部位は、トーションビームとトレーリングアームとの接続部分だけでなく、トーションビームやトレーリングアーム各々の部品形状についても発生する場合がある。 The stress concentration site as described in Patent Document 1 may occur not only at the connection portion between the torsion beam and the trailing arm but also for the shape of each component of the torsion beam and the trailing arm.

　この中でもトレーリングアームは、車体や車輪との連結部やタイヤからの衝撃を吸収するバネ受け座の形状など、様々な部位が設けられるため、形状が複雑になり易い。そのような場合にも応力や剛性を満足させようとしてトレーリングアーム自体の板厚を増加させると、部品としての重量が極端に大きくなってしまい、部品コストが高くなりすぎたり、自動車の燃費性能等に大きな影響を与えてしまったりする、といった問題がある。 Among these, since the trailing arm is provided with various portions such as the connecting portion with the vehicle body and the wheel and the shape of a spring seat for absorbing an impact from the tire, the shape tends to be complicated. In such a case, if the thickness of the trailing arm itself is increased in order to satisfy the stress and rigidity, the weight as the part becomes extremely large, the part cost becomes too high, and the fuel consumption performance of the automobile is increased. There is a problem such as giving a great influence on etc.

　そこで本発明は、上記課題を解決するために発明されたものであり、大幅に重量を増加させることなくトレーリングアームの強度や剛性を調整可能なトーションビーム式サスペンションを提供することを目的とする。 Accordingly, the present invention was invented to solve the above-mentioned problems, and it is an object of the present invention to provide a torsion beam type suspension capable of adjusting the strength and rigidity of a trailing arm without significantly increasing the weight.

　上記目的を達成する本発明は、車体の前後方向に伸延し上下に揺動する左右のトレーリングアームに車体の左右方向に伸延するトーションビームを接合したトーションビーム式サスペンションにおいて、左右のトレーリングアームは、凹部を有するように成形されたアーム部材を有し、アーム部材には当該アーム部材を補強する補強部材が凹部において接合されることを特徴とする。 The present invention for achieving the above object is a torsion beam type suspension in which a torsion beam extending in the left-right direction of the vehicle body is joined to left and right trailing arms extending in the front-rear direction of the vehicle body and swinging up and down. The arm member is formed to have a recess, and the arm member is characterized in that a reinforcing member for reinforcing the arm member is joined at the recess.

　本発明に係るトーションビーム式サスペンションによれば、トレーリングアームを構成するアーム部材の凹部において補強部材を接合してアーム部材を補強するように構成している。そのため、アーム部材の形状が複雑であっても、補強部材を凹部の所定位置に配置、接合することによって、アーム部材全体の板厚を増加させないかまたは板厚の増加量を低減させることができ、大幅に重量を増加させることなくトレーリングアームの強度や剛性を調整することができる。 According to the torsion beam type suspension according to the present invention, the reinforcing member is joined in the concave portion of the arm member constituting the trailing arm to reinforce the arm member. Therefore, even if the shape of the arm member is complicated, the plate thickness of the entire arm member can not be increased or the increase amount of the plate thickness can be reduced by arranging and joining the reinforcing member at the predetermined position of the recess. The strength and rigidity of the trailing arm can be adjusted without significantly increasing the weight.

本発明の一実施形態に係るトーションビーム式サスペンションを示す概略斜視図である。It is a schematic perspective view showing a torsion beam type suspension concerning one embodiment of the present invention. 同サスペンションを示す底面図である。It is a bottom view showing the same suspension. 図２の３－３線に沿う断面図である。FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 2; 図４（Ａ）は補強部材の正面図、図４（Ｂ）は補強部材の右側面図である。FIG. 4A is a front view of the reinforcing member, and FIG. 4B is a right side view of the reinforcing member. トーションビーム、アッパー部材、及びスプリングシートを溶接する前の板材を示す平面図である。It is a top view showing a plate before welding a torsion beam, an upper member, and a spring seat. 図５の６－６線に沿う断面図である。FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. 5; 図５の７－７線に沿う断面図である。FIG. 7 is a cross-sectional view taken along line 7-7 of FIG. 5; トーションビーム、アッパー部材、及びスプリングシートを構成する板材同士の溶接線とロア部材との関係を示す概略図である。It is the schematic which shows the relationship between the welding wire of plate material which comprises a torsion beam, an upper member, and a spring seat, and a lower member.

　以下、添付した図面を参照しながら、本発明の実施の形態を説明する。なお、以下の記載は特許請求の範囲に記載される技術的範囲や用語の意義を限定するものではない。また、図面の寸法比率は説明の都合上誇張されており、実際の比率とは異なる場合がある。 Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. The following description does not limit the technical scope or the meaning of terms described in the claims. Also, the dimensional proportions of the drawings are exaggerated for the convenience of the description, and may differ from the actual proportions.

　図１は本発明の一実施形態に係るトーションビーム式サスペンションを示す概略斜視図、図２は同サスペンションを示す底面図であり、図３は図２の３－３線に沿う断面図である。また、図４（Ａ）は補強部材の正面図、図４（Ｂ）は補強部材の右側面図である。 FIG. 1 is a schematic perspective view showing a torsion beam type suspension according to an embodiment of the present invention, FIG. 2 is a bottom view showing the same suspension, and FIG. 3 is a sectional view taken along line 3-3 in FIG. 4A is a front view of the reinforcing member, and FIG. 4B is a right side view of the reinforcing member.

　本実施形態に係るトーションビーム式サスペンション１００は、車体の左右方向に伸延して配置されるトーションビーム１０の両端部にトレーリングアーム２０が配置され、接合される。トーションビーム１０の内部には、ロール剛性を調整するためのロールバー３０が配置される。 In the torsion beam type suspension 100 according to the present embodiment, the trailing arms 20 are disposed and joined at both ends of the torsion beam 10 which is disposed to extend in the left-right direction of the vehicle body. Inside the torsion beam 10, a roll bar 30 for adjusting the roll rigidity is disposed.

　トーションビーム１０は、Ｕ字状のビームであり、車両搭載時にＵ字形状の開口部分が下方を向くように配置される。 The torsion beam 10 is a U-shaped beam, and is disposed so that the U-shaped opening portion faces downward when the vehicle is mounted.

　トレーリングアーム２０は、凹部２５を有するアッパー部材２１（アーム部材に相当）と、略平板状のロア部材２６（閉じ部材に相当）と、アッパー部材２１の凹部２５に配置される補強部材２７と、を有する。アッパー部材２１は、板状部材をプレス成形したものであり、トーションビーム１０との接続部分２２と、車体連結部２３ａと、車輪連結部２３ｂと、タイヤからの衝撃を吸収するスプリングを受けるスプリングシート２４（取り付け部に相当）と、を有する。 The trailing arm 20 includes an upper member 21 (corresponding to an arm member) having a recess 25, a substantially flat lower member 26 (corresponding to a closing member), and a reinforcing member 27 disposed in the recess 25 of the upper member 21. And. The upper member 21 is formed by press-forming a plate-like member, and a spring seat 24 which receives a spring that absorbs an impact from the tire, a connecting portion 22 with the torsion beam 10, a vehicle body connecting portion 23a, a wheel connecting portion 23b. And (corresponding to the mounting portion).

　トーションビーム１０との接続部分２２は、トーションビーム１０の断面形状であるＵ字形状とほぼ同一形状に成形されている。車体連結部２３ａは、車体を枢支する部位であり、本実施形態ではカラー２３ｅを接合することによって構成している。車輪連結部２３ｂは、車輪を軸支する部位であり、プレート２３ｃとスピンドル２３ｄとを有する。本実施形態ではプレート２３ｃにスピンドル２３ｄが設けられることによって車輪が軸支される。また、アッパー部材２１は、トーションビーム１０との接続部分２２や車体連結部２３ａ、車輪連結部２３ｂとを繋ぐようにプレス成形することによって凹部２５が形成される。凹部２５は、本実施形態において図２に示すように、トーションビーム１０との接続部分２２から車体連結部２３ａまで伸びるように形成されると共に、トーションビーム１０との接続部分２２から車輪連結部２３ｂまで伸び、また、車体連結部２３ａから車輪連結部２３ｂまで伸びるように形成されている。凹部２５の形状は、トーションビーム１０の取り付け位置によって多少変わるが、少なくとも一般的には車輪連結部２３ｂと車体連結部２３ａとを結ぶように形成されている。 The connection portion 22 with the torsion beam 10 is formed in substantially the same shape as the U-shape which is the cross-sectional shape of the torsion beam 10. The vehicle body connecting portion 23a is a portion for pivotally supporting the vehicle body, and in the present embodiment, is configured by joining a collar 23e. The wheel connecting portion 23b is a portion for supporting the wheel, and includes a plate 23c and a spindle 23d. In the present embodiment, the wheel is pivotally supported by providing the spindle 23 d on the plate 23 c. Further, the upper member 21 is press-formed to connect the connection portion 22 with the torsion beam 10, the vehicle body connecting portion 23a, and the wheel connecting portion 23b, thereby forming the recess 25. The recess 25 is formed so as to extend from the connection portion 22 with the torsion beam 10 to the vehicle body connecting portion 23a and extends from the connection portion 22 with the torsion beam 10 to the wheel connecting portion 23b as shown in FIG. In addition, it is formed to extend from the vehicle body connecting portion 23a to the wheel connecting portion 23b. Although the shape of the recess 25 slightly changes depending on the mounting position of the torsion beam 10, it is generally formed so as to connect at least the wheel connecting portion 23b and the vehicle body connecting portion 23a.

　スプリングシート２４は、トーションビーム１０との接続点近傍に設けられる形状であり、例えばコイル形状のスプリングを受けて支持するための座としての形状にあたる。スプリングシート２４は、設置部位によって車体の室内空間を狭くするおそれがあるため、例えば図１に示すようにトーションビーム１０とトレーリングアーム２０との交差部近傍に設けることが好ましい。また、スプリングシート２４の近傍には、図３に示すように、振動などの外力が入力した際にスプリングがスプリングシート２４からずれ落ちたりしないように縦壁２９が形成されている。 The spring sheet 24 has a shape provided in the vicinity of a connection point with the torsion beam 10, and corresponds to a shape as a seat for receiving and supporting, for example, a coil-shaped spring. Since the spring seat 24 may narrow the indoor space of the vehicle body depending on the installation site, it is preferable to provide the spring seat 24 in the vicinity of the intersection of the torsion beam 10 and the trailing arm 20 as shown in FIG. Further, as shown in FIG. 3, a vertical wall 29 is formed in the vicinity of the spring seat 24 so that the spring does not slip off the spring seat 24 when an external force such as vibration is input.

　ロア部材２６は、略平板状の部材であり、アッパー部材２１の凹部２５の開口部を塞ぐように配置され、アッパー部材２１の変形を防止する。ロア部材２６は、アッパー部材２１の形状を車両搭載時に平面視した際の投影形状と略同一に形成されている。また、アッパー部材２１の外周部と接触する部位は、図３に示すように曲面形状２６ａに成形されている。また、ロア部材２６の中でも、アッパー部材２１に取り付けた際のトーションビーム１０との接続部分に当たる部位は、図２に示すようにアッパー部材２１とトーションビーム１０との溶接部分２２を越えてトーションビーム側にまで伸びるように形成されている。これによりアッパー部材２１とトーションビーム１０との溶接部位が強化される。 The lower member 26 is a substantially flat member and is disposed so as to close the opening of the recess 25 of the upper member 21, and prevents the deformation of the upper member 21. The lower member 26 is formed substantially the same as a projected shape when the shape of the upper member 21 is viewed in plan when mounted on a vehicle. Moreover, the site | part which contacts the outer peripheral part of the upper member 21 is shape | molded by curved-surface shape 26a, as shown in FIG. Further, among the lower members 26, the portion corresponding to the connection portion with the torsion beam 10 when attached to the upper member 21 is beyond the welded portion 22 of the upper member 21 and the torsion beam 10 to the torsion beam side as shown in FIG. It is formed to extend. Thereby, the welding part of the upper member 21 and the torsion beam 10 is reinforced.

　補強部材２７は、アッパー部材２１の凹部２５に配置される部材であり、本実施形態では例えば板状部材として構成されている。補強部材２７は、図３に示すようにアッパー部材２１の凹部２５の壁面に接合できるように、凹部２５が存在するアッパー部材２１の内面と接触して接合されている。上記のように、凹部２５は車輪連結部２３ｂから車体連結部２３ａまで伸びており、凹部２５の変形が高応力部位や低剛性部位の原因となるため、補強部材２７は凹部２５を交差するように配置することが望ましい。このように配置することによって、凹部２５の変形を効果的に抑制し、高応力部位や低剛性部位の発生を低減させることができる。 The reinforcing member 27 is a member disposed in the recess 25 of the upper member 21 and is configured as, for example, a plate-like member in the present embodiment. The reinforcing member 27 is joined in contact with the inner surface of the upper member 21 in which the recess 25 exists so that the reinforcing member 27 can be joined to the wall surface of the recess 25 of the upper member 21 as shown in FIG. As described above, since the recess 25 extends from the wheel connecting portion 23b to the vehicle body connecting portion 23a and the deformation of the recess 25 causes the high stress portion and the low rigidity portion, the reinforcing member 27 crosses the recess 25 It is desirable to place in By arranging in this manner, the deformation of the recess 25 can be effectively suppressed, and the occurrence of a high stress area and a low rigidity area can be reduced.

　また、アッパー部材２１において凹部に高応力部位を生じさせる要因には、スプリングによるスプリングシート２４への荷重があるため、補強部材２７は凹部２５を交差するように配置するとともに、車両搭載状態で平面視した際にスプリングシート２４から径方向に伸びる位置に配置されることが好ましい。これによって、スプリングシート２４に取り付けられたスプリングからの入力に直接的に対抗することができ、アッパー部材２１における高応力部位や低剛性部位の発生をさらに効果的に低減させることができる。 Further, since the load on the spring seat 24 by the spring is a factor causing the high stressed portion in the recess in the upper member 21, the reinforcing member 27 is disposed so as to cross the recess 25 and is flat in the vehicle mounted state. It is preferable to arrange | position in the position extended in radial direction from the spring seat 24 when it sees. Thereby, it is possible to directly oppose the input from the spring attached to the spring seat 24, and it is possible to more effectively reduce the occurrence of the high stressed portion and the low rigidity portion in the upper member 21.

　補強部材２７は、例えば溶接によってアッパー部材２１に接合されるが、接合の態様は上記以外にも接着剤などを用いて行ってもよい。 The reinforcing member 27 is joined to the upper member 21 by welding, for example, but the manner of joining may be performed using an adhesive or the like other than the above.

　また、補強部材２７は、図４に示すように凹部２５の壁の中でもロア部材２６との接合部２８を有する。接合部２８は、平板状の補強部材２７を略直角に折り曲げて、角部が丸い矩形形状に成形されているが、これに限定されない。接合部２８を溶接などによって接合することによって、ロア部材２６と補強部材２７とを連結した状態にできる。そのため、アッパー部材２１に発生しうる高応力発生部位や低剛性部位をロア部材２６と補強部材２７とを合わせた状態で補強することができる。よって、ロア部材２６又は補強部材２７を単独で補強する場合に比べて上記高応力発生部位や低剛性部位をより効果的に補強できる。 Further, as shown in FIG. 4, the reinforcing member 27 has a joint portion 28 with the lower member 26 among the walls of the recess 25. The joint portion 28 is formed into a rectangular shape with rounded corners by bending the flat reinforcing member 27 at a substantially right angle, but is not limited thereto. By joining the joint portion 28 by welding or the like, the lower member 26 and the reinforcing member 27 can be connected. Therefore, it is possible to reinforce the high stress generating portion and the low rigidity portion which may be generated in the upper member 21 in a state where the lower member 26 and the reinforcing member 27 are combined. Therefore, compared with the case where the lower member 26 or the reinforcing member 27 is reinforced alone, the high stress generation site and the low rigidity site can be reinforced more effectively.

　なお、トーションビーム１０、アッパー部材２１、ロア部材２６、ロールバー３０等の部材は、例えば板厚が１～２ｍｍ程度の圧延鋼板によって形成されるが、これに限定されない。補強部材２７の板厚や、補強部材２７を凹部２５の壁面とどの程度接合させるかといった仕様は、トーションビーム１０やアッパー部材２１、ロア部材２６、及びロールバー３０の形状や、アッパー部材２１への荷重入力などの条件に基づいて決定される。また、図１、図２、及び図３においてアッパー部材２１及びスプリングシート２４の角部分や隅部分がＲ形状として図示されていたり、されていなかったりするが、これらの差異は図示の都合上によるものであり、当該部分の形状は同一である。 The members such as the torsion beam 10, the upper member 21, the lower member 26, and the roll bar 30 are formed of rolled steel plates having a thickness of, for example, about 1 to 2 mm, but are not limited thereto. The thickness of the reinforcing member 27 and the specification as to how the reinforcing member 27 is joined to the wall surface of the recess 25 are the shape of the torsion beam 10, the upper member 21, the lower member 26, and the roll bar 30, and the upper member 21. It is determined based on conditions such as load input. Further, although the corner portions and the corner portions of the upper member 21 and the spring seat 24 may or may not be illustrated as R-shaped in FIGS. 1, 2 and 3, the difference between them is due to the convenience of illustration. The shape of the said part is the same.

　次に本実施形態に係るトーションビーム式サスペンションの製造について説明する。図５はトーションビーム、アッパー部材、及びスプリングシートを溶接する前の板材を示す平面図、図６は図５の６－６線に沿う断面図、図７は図５の７－７線に沿う断面図、図８はトーションビーム、アッパー部材、及びスプリングシートを構成する板材同士の溶接線とロア部材との関係を示す概略図である。 Next, the manufacture of the torsion beam type suspension according to the present embodiment will be described. 5 is a plan view showing the torsion beam, the upper member, and the plate before welding the spring seat, FIG. 6 is a sectional view taken along line 6-6 in FIG. 5, and FIG. 7 is a sectional view taken along line 7-7 in FIG. FIG. 8 is a schematic view showing the relationship between the welding wire of the plate members constituting the torsion beam, the upper member, and the spring seat and the lower member.

　上記トーションビーム式サスペンション１００を製造する場合、例えばまず図５に示すような板材１０ｐ、２１ｐ、２４ｐを用意する。本実施形態において略台形の板材１０ｐは成形によってトーションビーム１０に成形される板材であり、略鉈状の板材２１ｐは成形によりアッパー部材２１となり、矩形状の板材２４ｐはスプリングシート２４となる。但し、これらの形状は実際の製品形状に応じて適宜選択可能である。 In the case of manufacturing the above-mentioned torsion beam type suspension 100, for example, plate members 10p, 21p and 24p as shown in FIG. 5 are prepared first. In the present embodiment, the substantially trapezoidal plate 10 p is a plate that is formed into the torsion beam 10 by forming, the substantially bowl-like plate 21 p becomes the upper member 21 by forming, and the rectangular plate 24 p becomes the spring sheet 24. However, these shapes can be appropriately selected according to the actual product shape.

　板材１０ｐ、２１ｐ、２４ｐの中でもアッパー部材２１に用いる板材２１ｐの板厚ｔ２は、図６に示すようにトーションビーム１０に用いる板材１０ｐの板厚ｔ１より薄くすることが好ましい。このように構成することによってトーションビーム１０の捩り剛性を高めつつトレーリングアーム２０の重量も軽減することができる。 Among the plate members 10p, 21p and 24p, the plate thickness t2 of the plate member 21p used for the upper member 21 is preferably thinner than the plate thickness t1 of the plate member 10p used for the torsion beam 10 as shown in FIG. By this configuration, it is possible to reduce the weight of the trailing arm 20 while enhancing the torsional rigidity of the torsion beam 10.

　また、スプリングシート２４に用いる板材２４ｐの板厚ｔ３は、図７に示すようにアッパー部材２１の板厚ｔ２より厚く形成すれば荷重が負荷されるスプリングシート２４の強度が向上するため、好ましい。勿論、スプリングシート２４の板材２４ｐの板厚ｔ３は、トーションビーム１０の板材１０ｐの板厚ｔ１より厚く形成し、さらに強度を高めてもよい。なお、板材１０ｐ、２１ｐ、２４ｐの板厚は相互に相違してもよいが、少なくとも板材１０ｐと板材２１ｐの板厚はトーションビーム１０の捩り剛性とトレーリングアーム２０の強度の向上を考慮し、相違させることが好ましい。 The plate thickness t3 of the plate 24p used for the spring sheet 24 is preferably larger than the plate thickness t2 of the upper member 21 as shown in FIG. 7 because the strength of the spring sheet 24 to which a load is applied is improved. Of course, the plate thickness t3 of the plate 24p of the spring sheet 24 may be thicker than the plate thickness t1 of the plate 10p of the torsion beam 10 to further enhance the strength. The plate thicknesses of the plate members 10p, 21p and 24p may be different from each other, but at least the plate thicknesses of the plate members 10p and 21p are different in consideration of the improvement of the torsional rigidity of the torsion beam 10 and the strength of the trailing arm 20. It is preferable to

　板材が用意できたら、板材１０ｐ、２１ｐ、２４ｐを相互に突合せ溶接によって接合する。突合せ溶接によってトーションビーム１０に用いる板材１０ｐと板材２１ｐとの間には図８に示すように溶接線Ｗ１が形成され、スプリングシート２４に用いる板材２４ｐと板材１０ｐの間には溶接線Ｗ２が形成され、板材２１ｐと板材２４ｐとの間には溶接線Ｗ３が形成される。 When the plate material is prepared, the plate materials 10p, 21p and 24p are mutually joined by butt welding. A weld line W1 is formed between the plate material 10p used for the torsion beam 10 and the plate material 21p by butt welding as shown in FIG. 8, and a weld line W2 is formed between the plate material 24p used for the spring sheet 24 and the plate material 10p. A weld line W3 is formed between the plate 21p and the plate 24p.

　このようにアッパー部材１０には図８の波線で示す溶接線Ｗ１、Ｗ２、Ｗ３が形成され、板厚が相違する２以上の板材が接合されたテーラードブランク材が形成される。 As described above, welding lines W1, W2 and W3 shown by broken lines in FIG. 8 are formed on the upper member 10, and a tailored blank material in which two or more plate materials having different plate thicknesses are joined is formed.

　テーラードブランク材が形成できたら、３つの板材が接合されたテーラードブランク材をプレス成形する。これによりトーションビーム１１は長手方向の軸直角断面がＵ字状に形成され、アッパー部材２１はトーションビーム１０との接続部分２２から車体連結部２３ａ、車輪連結部２３ｂに向かって凹部２５が形成される。スプリングシート２４はスプリングを受ける座面部に形成される。 After the tailored blank material is formed, the tailored blank material to which three plate members are joined is press-formed. Thus, the torsion beam 11 has a U-shaped cross section perpendicular to the longitudinal direction, and the upper member 21 has a recess 25 extending from the connecting portion 22 with the torsion beam 10 toward the vehicle connecting portion 23a and the wheel connecting portion 23b. The spring seat 24 is formed on a seat that receives the spring.

　テーラードブランク材をプレス成形したら、ロールバー３０をアッパー部材２１に挿通させる。そして、補強部材２７を左右のアッパー部材２１におけるスプリングシート２４の中心から凹部２５を直交するように各々配置して溶接接合する。そして、ロア部材２６をアッパー部材２１に被せるように載置し、アッパー部材２１の縁部と補強部材２７の接合部２８をロア部材２６に溶接接合する。最後にカラー２３ｅ及びプレート２３ｃを溶接して、トーションビーム式サスペンション１００が完成する。 After press-molding the tailored blank material, the roll bar 30 is inserted through the upper member 21. Then, the reinforcing members 27 are respectively disposed and welded to the recessed portions 25 so as to be orthogonal to the centers of the spring seats 24 in the left and right upper members 21. Then, the lower member 26 is placed so as to cover the upper member 21, and the edge of the upper member 21 and the joint portion 28 of the reinforcing member 27 are welded to the lower member 26. Finally, the collar 23e and the plate 23c are welded to complete the torsion beam type suspension 100.

　次に本実施形態に係る効果を説明する。 Next, the effects according to the present embodiment will be described.

　トレーリングアーム２０を構成するアッパー部材２１には、トーションビーム１０との接続部分２２や車体連結部２３ａ及び車輪連結部２３ｂを設ける必要があるため、形状が複雑になり易い。また、サスペンション部品においても燃費性能のために部品の軽量化が要求されるため、トレーリングアーム２０やトーションビーム１０の材料となる板材は板厚をできるだけ薄くする必要がある。板厚の薄い板材を複雑な形状に成形すれば高応力部位や低剛性部位が生じ易いが、本実施形態に係るトーションビーム式サスペンション１００は、アッパー部材２１の凹部２５に補強部材２７を配置して接合している。そのため、高応力部位等を改善するためにアッパー部材２１の板厚を増加させる必要がなくなるか、または板厚の増加量を低減させることができる。よって、サスペンションの重量を大幅に増加させることなく、高応力部位等の補強を効率的に行うことができる。 The upper member 21 constituting the trailing arm 20 needs to be provided with the connection portion 22 with the torsion beam 10, the vehicle body connecting portion 23a, and the wheel connecting portion 23b, so the shape is easily complicated. Further, also in the case of suspension parts, weight reduction of parts is required for fuel efficiency performance, and therefore, it is necessary to make a plate material which is a material of the trailing arm 20 and the torsion beam 10 as thin as possible. If a thin plate material is formed into a complicated shape, a high stress area and a low rigidity area are easily generated. However, in the torsion beam type suspension 100 according to the present embodiment, the reinforcement member 27 is disposed in the recess 25 of the upper member 21. It is joined. Therefore, it is not necessary to increase the plate thickness of the upper member 21 in order to improve the high stress site or the like, or the amount of increase in the plate thickness can be reduced. Therefore, reinforcement such as a high stress site can be efficiently performed without significantly increasing the weight of the suspension.

　また、補強部材２７はアッパー部材２１における車体連結部２３ａと車輪連結部２３ｂとを結ぶように伸びる凹部２５と交差するように配置され、接合されている。そのため、アッパー部材２１における凹部２５の変形を効果的に抑制して、高応力部位や低剛性部位の発生を効果的に抑制することができる。 Further, the reinforcing member 27 is disposed and joined so as to intersect the recess 25 extending so as to connect the vehicle body connecting portion 23a and the wheel connecting portion 23b in the upper member 21. Therefore, the deformation of the recess 25 in the upper member 21 can be effectively suppressed, and the generation of the high stressed portion and the low rigidity portion can be effectively suppressed.

　また、補強部材２７は、凹部２５に交差するとともにスプリングシート２４から径方向の位置に配置させることによって、スプリングの入力に直接対抗することができ、凹部２５の変形をさらに抑制することによって、高応力部位や低剛性部位の発生をさらに効果的に抑制することができる。 Further, the reinforcing member 27 can directly oppose the input of the spring by intersecting the recess 25 and arranging the reinforcing member 27 at a radial position from the spring seat 24, and by further suppressing the deformation of the recess 25, the height can be increased. It is possible to more effectively suppress the occurrence of stressed portions and low rigidity portions.

　また、補強部材２７はロア部材２６と接合部２８によって接合され、アーム部材２１における凹部２５の開口部を閉じるように構成している。そのため、補強部材２７とロア部材２６とをそれぞれ独立にではなく、お互いに連結させてアッパー部材２１の変形等を抑制することができ、アッパー部材２１の低剛性部位等をより効果的に補強することができる。 Further, the reinforcing member 27 is joined to the lower member 26 by the joint portion 28 so as to close the opening of the recess 25 in the arm member 21. Therefore, the reinforcing member 27 and the lower member 26 are not independent of each other, but can be connected to each other to suppress the deformation or the like of the upper member 21, thereby effectively reinforcing the low rigidity portion or the like of the upper member 21. be able to.

　なお、本発明は上述した実施形態にのみ限定されず、特許請求の範囲において種々の変更が可能である。 The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims.

　補強部材２７とロア部材２６との接合は溶接によって行う実施形態について説明したが、これに限定されず、補強部材２７とアッパー部材２１との接合のように接着剤によって接合してもよい。 Although the embodiment in which the reinforcing member 27 and the lower member 26 are joined is described by welding, the invention is not limited thereto, and bonding may be performed by an adhesive like joining of the reinforcing member 27 and the upper member 21.

　また、補強部材２７は左右のトレーリングアーム２０に各１つずつ設けられる実施形態について説明したが、個数は１つに限定されず、複数であってもよい。 In addition, although the reinforcing member 27 has been described in the embodiment in which one each of the left and right trailing arms 20 is provided, the number of the reinforcing members 27 is not limited to one and may be plural.

１０　トーションビーム、
１０ｐ　トーションビーム成形前の板材、
１００　トーションビーム式サスペンション、
２０　トレーリングアーム、
２１　アッパー部材（アーム部材）、
２１ｐ　アッパー部材成形前の板材、
２２　トーションビームとの接続部分、
２３ａ　車体連結部、
２３ｂ　車輪連結部、
２３ｃ　プレート、
２３ｄ　スピンドル、
２３ｅ　カラー、
２４　スプリングシート（取り付け部）、
２４ｐ　スプリングシート成形前の板材、
２５　凹部、
２６　ロア部材（閉じ部材）、
２６ａ　曲面形状、
２７　補強部材、
２８　ロア部材との接合部、
２９　縦壁、
３０　ロールバー、
Ｗ１、Ｗ２、Ｗ３　溶接線、
ｔ１、ｔ２、ｔ３　　　板厚。 10 torsion beams,
10p plate material before forming the torsion beam,
100 torsion beam suspension,
20 trailing arms,
21 upper member (arm member),
21p plate material before forming upper member,
22 Connection with the torsion beam,
23a body connecting part,
23b wheel connection,
23c plate,
23d spindle,
23e color,
24 spring seat (mounting part),
24p Spring sheet before forming,
25 recesses,
26 lower member (closing member),
26a Curved surface shape,
27 reinforcement members,
28 Joint with lower member,
29 vertical walls,
30 roll bars,
W1, W2, W3 welding wire,
t1, t2, t3 thickness.

Claims (4)

　車体の前後方向に伸延し上下に揺動する左右のトレーリングアームと、車体の左右方向に伸延し、左右の前記トレーリングアームをつなぐトーションビームと、を接合したトーションビーム式サスペンションにおいて、
　左右の前記トレーリングアームは、凹部を有するように成形されたアーム部材を有し、
　前記アーム部材には前記アーム部材を補強する補強部材が前記凹部において接合されることを特徴とするトーションビーム式サスペンション。 A torsion beam type suspension in which left and right trailing arms extending in the longitudinal direction of the vehicle body and swinging up and down and torsion beams extended in the lateral direction of the vehicle body and connecting the left and right trailing arms are joined.
The left and right trailing arms have arm members shaped to have a recess,
A torsion beam type suspension characterized in that a reinforcing member for reinforcing the arm member is joined to the arm member at the recess. 　前記アーム部材は、車体に連結される車体連結部と、車輪に連結される車輪連結部と、を有し、前記凹部は前記車体連結部と前記車輪連結部とを結ぶように形成され、
　前記補強部材は、前記凹部を交差するように配置される請求項１に記載のトーションビーム式サスペンション。 The arm member has a vehicle body connecting portion connected to a vehicle body and a wheel connecting portion connected to a wheel, and the recess is formed to connect the vehicle body connecting portion and the wheel connecting portion.
The torsion beam suspension according to claim 1, wherein the reinforcing member is disposed to cross the recess. 　前記アーム部材は、前記トレーリングアームに負荷される衝撃を吸収するための弾性部材を取り付ける取り付け部をさらに有し、
　前記補強部材は前記取り付け部から径方向に配置される請求項２に記載のトーションビーム式サスペンション。 The arm member further includes a mounting portion for mounting an elastic member for absorbing an impact applied to the trailing arm,
The torsion beam type suspension according to claim 2, wherein the reinforcing member is disposed radially from the attachment portion. 　前記トレーリングアームは、前記アーム部材における凹部の開口部を塞ぐように取り付けられる閉じ部材をさらに有し、
　前記補強部材は、前記閉じ部材に接合される請求項１から３のいずれか１項に記載のトーションビーム式サスペンション。 The trailing arm further includes a closing member attached to close an opening of a recess in the arm member,
The torsion beam type suspension according to any one of claims 1 to 3, wherein the reinforcing member is joined to the closing member.
PCT/JP2013/056491 2013-03-08 2013-03-08 Torsion beam type suspension Ceased WO2014136261A1 (en)

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CN105291751A (en) * 2015-11-02 2016-02-03 北汽银翔汽车有限公司 Novel torsion beam assembly
CN113352837A (en) * 2020-03-05 2021-09-07 株式会社 F.泰克 Torsion beam type suspension
CN114475137A (en) * 2022-01-21 2022-05-13 奇瑞汽车股份有限公司 Automobile rear suspension torsion beam assembly
JP2023549720A (en) * 2020-11-06 2023-11-29 アルセロールミタル Car rear underfloor structure
EP4541611A1 (en) * 2023-10-12 2025-04-23 Benteler Automobiltechnik GmbH Twist beam axle

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Publication number Priority date Publication date Assignee Title
CN105291751A (en) * 2015-11-02 2016-02-03 北汽银翔汽车有限公司 Novel torsion beam assembly
CN113352837A (en) * 2020-03-05 2021-09-07 株式会社 F.泰克 Torsion beam type suspension
CN113352837B (en) * 2020-03-05 2024-05-28 株式会社F.泰克 Torsion beam type suspension
JP2023549720A (en) * 2020-11-06 2023-11-29 アルセロールミタル Car rear underfloor structure
CN114475137A (en) * 2022-01-21 2022-05-13 奇瑞汽车股份有限公司 Automobile rear suspension torsion beam assembly
EP4541611A1 (en) * 2023-10-12 2025-04-23 Benteler Automobiltechnik GmbH Twist beam axle

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