JP2010047075A - Vehicular suspension system - Google Patents

Vehicular suspension system Download PDF

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JP2010047075A
JP2010047075A JP2008211563A JP2008211563A JP2010047075A JP 2010047075 A JP2010047075 A JP 2010047075A JP 2008211563 A JP2008211563 A JP 2008211563A JP 2008211563 A JP2008211563 A JP 2008211563A JP 2010047075 A JP2010047075 A JP 2010047075A
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lateral rod
support pieces
vehicle body
end portion
lower member
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Hikaru Arima
ひかる 有馬
Shuzo Ichi
修三 市
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Daihatsu Motor Co Ltd
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Daihatsu Motor Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To improve NV performance of a lateral rod while controlling a distance between both support pieces to be small in the case where one end portion of the lateral rod is disposed between front and rear support pieces attached to a lower member of a vehicle body and pivoted to both the support pieces. <P>SOLUTION: A vehicular suspension system is provided with: an axle housing 8 elastically connected to the lower member 3 to be liftable in a downward region of the lower member 3 of a vehicle body 2; the front and rear support pieces 28, 29 attached to the lower member 3 and facing each other in a fore-and-aft direction; and a lateral rod 33 which extends in a width direction of the vehicle body 2, has one end portion 42 thereof in a longitudinal direction disposed between the front and rear support pieces 28, 29, pivoted to the front and rear support pieces 28, 29 to be rotatable A around an axis 35 extending in the fore-and-aft direction and which has the other end portion 44 pivoted to the axle housing 8. An external shape of a cross-section on one end portion 42 side of the lateral rod 33 is formed into a vertically long oblong shape. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、車体の幅方向の所定位置にアクスルハウジングを保持させるためのラテラルロッドを備えた自動車の懸架装置に関するものである。   The present invention relates to a suspension system for an automobile provided with a lateral rod for holding an axle housing at a predetermined position in the width direction of a vehicle body.

自動車の懸架装置には、従来、下記特許文献１に示されるものがある。この公報のものによれば、上記懸架装置は、車体の下部部材の下方域で車体の幅方向に延び、かつ、昇降可能となるよう上記下部部材に弾性的に連結されるアクスルハウジングと、上記下部部材に取り付けられ、前後方向で互いに対面する前、後支持片と、車体の幅方向に延び、その長手方向の一端部が上記前、後支持片の間に配置されると共に、前後方向に延びる軸心回りに回動可能となるよう上記前、後支持片に枢支され、他端部が上記アクスルハウジングに枢支されるラテラルロッドとを備えている。上記アクスルハウジングの各端部に左、右車輪が回転可能に支持され、上記アクスルハウジングに収容される車軸を介し、上記各車輪がエンジンに連動連結される。   Conventionally, there is an automobile suspension device disclosed in Patent Document 1 below. According to this publication, the suspension device extends in the width direction of the vehicle body in a lower region of the lower member of the vehicle body, and is elastically connected to the lower member so as to be movable up and down. The front and rear support pieces are attached to the lower member and face each other in the front-rear direction, and extend in the width direction of the vehicle body. One end portion of the longitudinal direction is disposed between the front and rear support pieces, and in the front-rear direction. A lateral rod pivotally supported by the front and rear support pieces and pivotally supported by the axle housing is provided so as to be rotatable around an extending axis. Left and right wheels are rotatably supported at each end of the axle housing, and the wheels are linked to the engine via an axle accommodated in the axle housing.

自動車の走行時、上記各車輪に路面から衝撃力が与えられるとき、これら車輪と共にアクスルハウジングが昇降を繰り返し、これに伴い伸縮する緩衝器より、上記衝撃力が緩和される。また、上記したように、アクスルハウジングが昇降を繰り返すとき、これに連動して、上記ラテラルロッドは上記軸心を中心として上下回動を繰り返す。そして、このように上下回動を繰り返しながら、このラテラルロッドは上記アクスルハウジングを車体の幅方向の所定位置に保持する。
特開平５−３１９０４９号公報 When an impact force is applied from the road surface to each of the wheels during traveling of the automobile, the axle housing repeatedly moves up and down together with the wheels, and the impact force is alleviated by a shock absorber that expands and contracts accordingly. Further, as described above, when the axle housing repeatedly moves up and down, the lateral rod repeatedly rotates up and down around the shaft center in conjunction with this. The lateral rod holds the axle housing at a predetermined position in the width direction of the vehicle body while repeating the vertical rotation as described above.
JP-A-5-319049

ところで、上記のように軸心回りにラテラルロッドが上下に回動するとき、このラテラルロッドの一端部側に上記前、後支持片が接触しないよう、これら両支持片の離間寸法が定められている。   By the way, when the lateral rod pivots up and down around the axis as described above, the distance between the two support pieces is determined so that the front and rear support pieces do not come into contact with one end of the lateral rod. Yes.

一方、上記ラテラルロッドには、そのＮＶ（騒音、振動）性能の向上により、ラテラルロッドがエンジンや差動装置と共鳴しないようにすることが求められる。そこで、上記ラテラルロッドの強度と剛性とを向上させ、その固有振動数を大きくさせて、このラテラルロッドの径寸法を大きくさせることが考えられる。しかし、単にこのようにすると、上記ラテラルロッドの一端部側との接触を避けるため、上記両支持片の離間寸法をより大きくする必要が生じるが、これは、車体構成部品をできるだけコンパクトにすることが要求される自動車にとって、好ましくない。   On the other hand, the lateral rod is required to prevent the lateral rod from resonating with the engine or the differential device by improving the NV (noise, vibration) performance. Therefore, it is conceivable to increase the radial dimension of the lateral rod by improving the strength and rigidity of the lateral rod and increasing its natural frequency. However, if this is simply done, in order to avoid contact with one end of the lateral rod, it is necessary to increase the distance between the two support pieces. This is to make the vehicle body components as compact as possible. This is not desirable for automobiles that require high speed.

本発明は、上記のような事情に注目してなされたもので、本発明の目的は、車体の下部部材に取り付けられた前、後支持片の間にラテラルロッドの一端部を配置して、この一端部を上記両支持片に枢支させるようにした場合において、これら両支持片の離間寸法を小さく抑制したままで、上記ラテラルロッドのＮＶ性能を向上させることができるようにすることである。   The present invention was made paying attention to the above situation, and the object of the present invention is to arrange one end portion of the lateral rod between the front and rear support pieces before being attached to the lower member of the vehicle body, In the case where the one end is pivotally supported by the two support pieces, the NV performance of the lateral rod can be improved while keeping the distance between the two support pieces small. .

請求項１の発明は、車体２の下部部材３の下方域で車体２の幅方向に延び、かつ、昇降可能となるよう上記下部部材３に弾性的に連結されるアクスルハウジング８と、上記下部部材３に取り付けられ、前後方向で互いに対面する前、後支持片２８，２９と、車体２の幅方向に延び、その長手方向の一端部４２が上記前、後支持片２８，２９の間に配置されると共に、前後方向に延びる軸心３５回りに回動Ａ可能となるよう上記前、後支持片２８，２９に枢支され、他端部４４が上記アクスルハウジング８に枢支されるラテラルロッド３３とを備えた自動車の懸架装置において、
上記ラテラルロッド３３の一端部４２側における断面の外形形状を、上下に長い長円形状にしたことを特徴とする自動車の懸架装置である。 The invention of claim 1 includes an axle housing 8 that extends in the width direction of the vehicle body 2 in a lower region of the lower member 3 of the vehicle body 2 and is elastically connected to the lower member 3 so as to be movable up and down. The front and rear support pieces 28 and 29 are attached to the member 3 and face each other in the front-rear direction, and extend in the width direction of the vehicle body 2, and one end portion 42 in the longitudinal direction is between the front and rear support pieces 28 and 29. Lateral and pivotally supported by the front and rear support pieces 28 and 29 and the other end 44 is pivotally supported by the axle housing 8 so as to be able to rotate A about the axial center 35 extending in the front-rear direction. In the automobile suspension system comprising the rod 33,
The suspension of the automobile is characterized in that an outer shape of a cross section of the lateral rod 33 on the one end portion side is an ellipse that is long in the vertical direction.

なお、この項において、上記各用語に付記した符号や図面番号は、本発明の技術的範囲を後述の「実施例」の項や図面の内容に限定解釈するものではない。   In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

本発明による効果は、次の如くである。   The effects of the present invention are as follows.

請求項１の発明は、車体の下部部材の下方域で車体の幅方向に延び、かつ、昇降可能となるよう上記下部部材に弾性的に連結されるアクスルハウジングと、上記下部部材に取り付けられ、前後方向で互いに対面する前、後支持片と、車体の幅方向に延び、その長手方向の一端部が上記前、後支持片の間に配置されると共に、前後方向に延びる軸心回りに回動可能となるよう上記前、後支持片に枢支され、他端部が上記アクスルハウジングに枢支されるラテラルロッドとを備えた自動車の懸架装置において、
上記ラテラルロッドの一端部側における断面の外形形状を、上下に長い長円形状にしている。 The invention of claim 1 is attached to the lower housing and an axle housing that extends in the width direction of the vehicle body in a lower region of the lower body member and is elastically connected to the lower member so that it can be raised and lowered. Before and after facing each other in the front-rear direction, the rear support piece extends in the width direction of the vehicle body, and one end portion in the longitudinal direction is disposed between the front and rear support pieces and rotates around an axis extending in the front-rear direction. In a vehicle suspension system comprising a lateral rod pivotally supported by the front and rear support pieces so as to be movable and the other end pivotally supported by the axle housing,
The external shape of the cross section on the one end side of the lateral rod is an oval shape that is long in the vertical direction.

このため、上記ラテラルロッドの一端部側の断面積を大きくして、その強度と剛性とを向上させることにより、ＮＶ性能を向上させるようにした場合でも、上記ラテラルロッドの一端部の前後方向の厚さ寸法は小さいままに抑制できる。   For this reason, even when NV performance is improved by increasing the cross-sectional area on one end side of the lateral rod and improving its strength and rigidity, the longitudinal direction of one end portion of the lateral rod is improved. The thickness dimension can be kept small.

よって、車体の下部部材に取り付けられた前、後支持片の間にラテラルロッドの一端部を配置し、この一端部を上記両支持片に枢支させるようにした懸架装置において、上記したように、ラテラルロッドの一端部の厚さ寸法を小さいままに抑制することにより、上記両支持片の離間寸法を小さく抑制できる。つまり、上記両支持片の離間寸法を小さく抑制したままで、上記ラテラルロッドのＮＶ性能を向上させることができる。   Therefore, in the suspension device in which one end portion of the lateral rod is disposed between the front and rear support pieces attached to the lower member of the vehicle body, and the one end portion is pivotally supported by the both support pieces, as described above. By suppressing the thickness dimension of the one end portion of the lateral rod while keeping it small, the separation dimension of the both support pieces can be suppressed small. That is, the NV performance of the lateral rod can be improved while keeping the distance between the two support pieces small.

本発明の自動車の懸架装置に関し、車体の下部部材に取り付けられた前、後支持片の間にラテラルロッドの一端部を配置して、この一端部を上記両支持片に枢支させるようにした場合において、これら両支持片の離間寸法を小さく抑制したままで、上記ラテラルロッドのＮＶ性能を向上させることができるようにする、という目的を実現するため、本発明を実施するための最良の形態は、次の如くである。   With regard to the automobile suspension system according to the present invention, one end portion of the lateral rod is disposed between the front and rear support pieces attached to the lower member of the vehicle body, and the one end portion is pivotally supported by the both support pieces. In this case, the best mode for carrying out the present invention is to realize the object of improving the NV performance of the lateral rod while keeping the distance between the support pieces small. Is as follows.

即ち、自動車の懸架装置は、車体の下部部材の下方域で車体の幅方向に延び、かつ、昇降可能となるよう上記下部部材に弾性的に連結されるアクスルハウジングと、上記下部部材に取り付けられ、前後方向で互いに対面する前、後支持片と、車体の幅方向に延び、その長手方向の一端部が上記前、後支持片の間に配置されると共に、前後方向に延びる軸心回りに回動可能となるよう上記前、後支持片に枢支され、他端部が上記アクスルハウジングに枢支されるラテラルロッドとを備える。上記ラテラルロッドの一端部側における断面の外形形状を、上下に長い長円形状にしている。   That is, an automobile suspension device is attached to the lower member and an axle housing that extends in the width direction of the vehicle body in a lower region of the lower member of the vehicle body and is elastically connected to the lower member so as to be movable up and down. Before and after facing each other in the front-rear direction, and extending in the width direction of the vehicle body, one end portion in the longitudinal direction thereof is disposed between the front and rear support pieces, and around an axis extending in the front-rear direction A lateral rod pivotally supported by the front and rear support pieces and pivotally supported by the axle housing is provided. The external shape of the cross section on the one end side of the lateral rod is an oval shape that is long in the vertical direction.

本発明をより詳細に説明するために、その実施例を添付の図に従って説明する。   In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

図において、符号１は自動車である。また、矢印Ｆｒは、この自動車１の進行方向の前方を示している。なお、下記する左右とは上記前方に向かっての車体２の幅方向をいうものとする。   In the figure, reference numeral 1 denotes an automobile. An arrow Fr indicates the front in the traveling direction of the automobile 1. The left and right described below refer to the width direction of the vehicle body 2 toward the front.

上記車体２は、この車体２の下部部材３を構成し、前後方向の長く延びる左右サイドフレーム４，４と、車体２の幅方向に延び上記左右サイドフレーム４，４に架設される前後で複数のクロスメンバ５とを備えている。これらサイドフレーム４とクロスメンバ５とはそれぞれ板金製で、長手方向の各部断面が倒立ハット形状とされ、車体２の骨格部材を構成している。   The vehicle body 2 constitutes a lower member 3 of the vehicle body 2 and includes a plurality of left and right side frames 4 and 4 extending in the front-rear direction, and a plurality of front and rear frames that extend in the width direction of the vehicle body 2 and are installed on the left and right side frames 4 and 4. The cross member 5 is provided. The side frame 4 and the cross member 5 are each made of sheet metal, and each cross section in the longitudinal direction has an inverted hat shape, and constitutes a skeleton member of the vehicle body 2.

上記車体２の後部における上記クロスメンバ５の下方域に、車体２の幅方向に延びるリヤアクスルハウジング８が設けられる。このアクスルハウジング８の長手方向の各端部にはそれぞれ後車輪９が回転可能に支持される。また、上記アクスルハウジング８の長手方向の中途部には、差動装置を内有するデフハウジング１０が形成されている。上記各後車輪９は、上記アクスルハウジング８の各端部側に内有された各車軸と上記差動装置とを介し走行用エンジンに連動連結されている。   A rear axle housing 8 extending in the width direction of the vehicle body 2 is provided below the cross member 5 at the rear portion of the vehicle body 2. A rear wheel 9 is rotatably supported at each end in the longitudinal direction of the axle housing 8. A differential housing 10 having a differential device is formed in the middle of the axle housing 8 in the longitudinal direction. Each of the rear wheels 9 is interlocked and connected to a traveling engine through each axle included in each end side of the axle housing 8 and the differential.

走行面１３に接地した各後車輪９に上記車体２の後部を懸架させるリヤ懸架装置１４が設けられている。この懸架装置１４は、上記下部部材３に上記アクスルハウジング８を昇降可能となるよう弾性的に連結する不図示の左右ばねと、上記下部部材３と上記アクスルハウジング８との間に架設される左右緩衝器１５，１５と、上記アクスルハウジング８を、このアクスルハウジング８よりも前方の上記各サイドフレーム４に連結させる不図示の左右トレーリングアームとを備えている。   A rear suspension device 14 is provided for suspending the rear portion of the vehicle body 2 on each rear wheel 9 that is in contact with the traveling surface 13. The suspension device 14 includes left and right springs (not shown) that are elastically connected to the lower member 3 so that the axle housing 8 can be moved up and down, and left and right springs that are installed between the lower member 3 and the axle housing 8. The shock absorbers 15 and 15, and left and right trailing arms (not shown) for connecting the axle housing 8 to the side frames 4 ahead of the axle housing 8 are provided.

上記クロスメンバ５の長手方向の一端部（左端部）１７から下方に向かって突出するブラケット１８が設けられている。このブラケット１８は板金製で、前後方向で互いに対面する前、後支持片１９，２０と、車体２の幅方向における上記両支持片１９，２０の各端縁同士を一体的に結合させる左、右結合片２１，２１とを備えている。上記ブラケット１８の上部における長手方向の各部断面は閉断面構造とされ、上記ブラケット１８の突出端部２４における長手方向の各部断面は、上記クロスメンバ５の他端部（右端部）２２側に向かって開くコの字形状とされている。   A bracket 18 protruding downward from one end (left end) 17 in the longitudinal direction of the cross member 5 is provided. The bracket 18 is made of sheet metal, and the front support member 19 and the front support member 19 and the front support member 19 and the left support member 19 and 20 in the width direction of the vehicle body 2 are joined to each other in the width direction. Right coupling pieces 21 and 21 are provided. Each section in the longitudinal direction at the upper part of the bracket 18 has a closed section structure, and each section in the longitudinal direction at the projecting end 24 of the bracket 18 faces the other end (right end) 22 side of the cross member 5. It has a U-shape that opens.

また、上記クロスメンバ５の下方域で、車体２の幅方向に延び、その一端部（左端部）２５が上記ブラケット１８の突出端部２４に結合され、他端部（右端部）２６が上記クロスメンバ５の他端部２２側に結合されるステー２７が設けられている。このステー２７は板金製で、前後方向で互いに対面する前、後支持片２８，２９と、これら支持片２８，２９の各上端縁同士を一体的に結合させる結合片３０とを備えている。上記ステー２７の長手方向の各部断面は、下方に向かって開く倒立Ｕ字形状とされている。   Further, in the lower region of the cross member 5, it extends in the width direction of the vehicle body 2, one end (left end) 25 thereof is coupled to the projecting end 24 of the bracket 18, and the other end (right end) 26 is A stay 27 coupled to the other end 22 side of the cross member 5 is provided. The stay 27 is made of sheet metal, and includes front and rear support pieces 28 and 29 before and facing each other in the front-rear direction, and a coupling piece 30 that integrally couples upper end edges of the support pieces 28 and 29. Each cross section of the stay 27 in the longitudinal direction has an inverted U shape that opens downward.

上記ブラケット１８の突出端部２４に、上記ステー２７の一端部２５が密に嵌入されて互いに結合されている。この場合、上記ブラケット１８の突出端部２４の前、後支持片１９，２０と、上記ステー２７の一端部２５の前、後支持片２８，２９とは、それぞれ互いに補強するよう結合されて強固な２枚重ね構造とされている。上記ステー２７の他端部２６は、その前、後支持片２８，２９が上記クロスメンバ５の他端部２２側を前後から挟み付けた状態で、この他端部２２側に結合されている。   One end portion 25 of the stay 27 is closely fitted to the protruding end portion 24 of the bracket 18 and coupled to each other. In this case, the front and rear support pieces 19 and 20 in front of the protruding end portion 24 of the bracket 18 and the front and rear support pieces 28 and 29 in front of the one end portion 25 of the stay 27 are joined together to reinforce each other. It has a two-layer structure. The other end portion 26 of the stay 27 is coupled to the other end portion 22 side with the rear support pieces 28 and 29 sandwiching the other end portion 22 side of the cross member 5 from the front and rear. .

また、上記クロスメンバ５の下方域、かつ、上記アクスルハウジング８の後方近傍域で、車体２の幅方向に直線的に延び、車体２の幅方向の所定位置に上記アクスルハウジング８を保持させるためのラテラルロッド３３が設けられている。上記ブラケット１８の突出端部２４とステー２７の一端部２５との互いの結合部における前支持片１９，２８と、後支持片２０，２９とには、軸心３５が前後方向に延びる枢支軸３６が架設されている。車体２の幅方向で、上記クロスメンバ５の他端部２２側における上記アクスルハウジング８の端部後面には、他の軸心３９が前後方向に延びる他の枢支軸４０が突設されている。   Further, in the region below the cross member 5 and in the region near the rear of the axle housing 8, it extends linearly in the width direction of the vehicle body 2 and holds the axle housing 8 at a predetermined position in the width direction of the vehicle body 2. Lateral rod 33 is provided. The front support pieces 19 and 28 and the rear support pieces 20 and 29 at the joint portion between the projecting end portion 24 of the bracket 18 and the one end portion 25 of the stay 27 are pivotally supported with an axis 35 extending in the front-rear direction. A shaft 36 is installed. On the rear surface of the end of the axle housing 8 on the other end 22 side of the cross member 5 in the width direction of the vehicle body 2, another pivot shaft 40 with another shaft center 39 extending in the front-rear direction is projected. Yes.

上記ラテラルロッド３３の長手方向の一端部（左端部）４２は、上記前支持片１９，２８と、後支持片２０，２９との間で、前後方向の中央部に配置されると共に、上記軸心３５回りに上下に回動Ａ可能となるようリングブッシュ４３を介し上記枢支軸３６に枢支されている。また、上記ラテラルロッド３３の他端部（右端部）４４は、上記他の軸心３９回りに上下に回動Ａ可能となるようリングブッシュ４５を介し上記他の枢支軸４０に枢支されている。   One end portion (left end portion) 42 in the longitudinal direction of the lateral rod 33 is disposed at the center portion in the front-rear direction between the front support pieces 19 and 28 and the rear support pieces 20 and 29, and the shaft It is pivotally supported by the pivot shaft 36 via a ring bush 43 so that it can be pivoted up and down around the core 35. Further, the other end portion (right end portion) 44 of the lateral rod 33 is pivotally supported by the other pivot shaft 40 via the ring bush 45 so that it can be pivoted up and down around the other shaft center 39. ing.

上記ラテラルロッド３３の一端部４２と他端部４４とは、それぞれ金属製のリング４７により形成されている。また、上記ラテラルロッド３３の長手方向の中途部は金属製のパイプ材４８により形成されている。そして、上記各リング４７の外周面と、上記パイプ材４８の各端部とは全周溶接Ｗにより強固に結合されて、このパイプ材４８の内部は密封状態とされ、水入りによる発錆が防止されている。   One end portion 42 and the other end portion 44 of the lateral rod 33 are each formed by a metal ring 47. Further, a midway portion in the longitudinal direction of the lateral rod 33 is formed by a metal pipe material 48. And the outer peripheral surface of each said ring 47 and each edge part of the said pipe material 48 are firmly couple | bonded by the all-around welding W, The inside of this pipe material 48 is made into the sealing state, and the rusting by water entering is carried out. It is prevented.

特に、図３，４で示すように、上記ラテラルロッド３３の一端部４２側における断面の外形形状は、上下に長い長円形状となるよう形成されている。なお、この長円形状は長軸が縦向きの楕円形状や、長辺が縦向きの長方形状を含む概念であり、上記ラテラルロッド３３の一端部４２側は中実の棒材であってもよい。また、この場合、このラテラルロッド３３が上記枢支軸３６の軸心３５回りで上方に回動Ａしたとき（図１，３中一点鎖線）、上記ステー２７の一端部２５側の内部に入り込む可能性がある上記ラテラルロッド３３の一端部４２側の部分のみにつき、その断面が長円形状とされている。一方、上記ラテラルロッド３３の他端部４４側における断面の外形形状は、円形とされている。   In particular, as shown in FIGS. 3 and 4, the outer shape of the cross section on the one end 42 side of the lateral rod 33 is formed to be a long oval shape in the vertical direction. This oval shape is a concept including an elliptical shape whose longitudinal axis is vertically oriented and a rectangular shape whose longitudinal side is vertically oriented, and the end 42 side of the lateral rod 33 may be a solid bar. Good. Further, in this case, when the lateral rod 33 rotates A around the axis 35 of the pivotal support shaft 36 (dotted line in FIGS. 1 and 3), it enters the inside of the stay 27 on the one end 25 side. Only a portion of the lateral rod 33 on the one end portion 42 side that has a possibility has an elliptical cross section. On the other hand, the outer shape of the cross section on the other end 44 side of the lateral rod 33 is circular.

上記構成によれば、ラテラルロッド３３の一端部４２側における断面の外形形状を、上下に長い長円形状にしている。   According to the said structure, the external shape of the cross section in the one end part 42 side of the lateral rod 33 is made into the ellipse shape long vertically.

このため、上記ラテラルロッド３３の一端部４２側の断面積を大きくして、その強度と剛性とを向上させることにより、ＮＶ性能を向上させるようにした場合でも、上記ラテラルロッド３３の一端部４２の前後方向の厚さ寸法は小さいままに抑制できる。   For this reason, even when the NV performance is improved by increasing the cross-sectional area of the lateral rod 33 on the one end 42 side and improving the strength and rigidity thereof, the one end 42 of the lateral rod 33 is improved. The thickness dimension in the front-rear direction can be kept small.

よって、車体２の下部部材３に取り付けられた前、後支持片２８，２９の間にラテラルロッド３３の一端部４２を配置し、この一端部４２を上記両支持片２８，２９に枢支させるようにした懸架装置１４において、上記したように、ラテラルロッド３３の一端部４２の厚さ寸法を小さいままに抑制することにより、上記両支持片２８，２９の離間寸法Ｌを小さく抑制できる。つまり、上記両支持片２８，２９の離間寸法Ｌを小さく抑制したままで、上記ラテラルロッド３３のＮＶ性能を向上させることができる。   Therefore, one end portion 42 of the lateral rod 33 is disposed between the front and rear support pieces 28 and 29 attached to the lower member 3 of the vehicle body 2, and the one end portion 42 is pivotally supported by the both support pieces 28 and 29. In the suspension apparatus 14 configured as described above, as described above, by suppressing the thickness dimension of the one end portion 42 of the lateral rod 33 while being small, the separation dimension L of the both support pieces 28 and 29 can be suppressed small. That is, the NV performance of the lateral rod 33 can be improved while the separation dimension L between the support pieces 28 and 29 is kept small.

また、上記したように、ラテラルロッド３３の一端部４２側における断面を、要するに縦長形状にしている。このため、上記ラテラルロッド３３の断面の長手方向と上記軸心３５を中心とするラテラルロッド３３の回動Ａ方向とが合致する。よって、このラテラルロッド３３の回動Ａ時にこのラテラルロッド３３に生じる応力のうち、より大きい縦方向の応力が小さく抑制されることから、このラテラルロッド３３にとって強度上有益である。   Further, as described above, the cross section of the lateral rod 33 on the side of the one end portion 42 is basically formed in a vertically long shape. For this reason, the longitudinal direction of the cross section of the lateral rod 33 coincides with the rotation A direction of the lateral rod 33 around the axis 35. Therefore, the stress in the lateral rod 33 during the rotation A of the lateral rod 33 is suppressed to a smaller longitudinal stress, which is beneficial for the lateral rod 33 in terms of strength.

車体の後部背面図である。It is a rear part rear view of a vehicle body. 車体の後部平面図である。It is a rear part top view of a vehicle body. 図１のIII−III線矢視断面図である。FIG. 3 is a cross-sectional view taken along line III-III in FIG. 1. 車体の後部斜視展開図である。It is a rear perspective development view of a vehicle body.

符号の説明Explanation of symbols

１ 自動車
２ 車体
３ 下部部材
５ クロスメンバ
８ アクスルハウジング
９ 後車輪
１４ 懸架装置
１８ ブラケット
２４ 突出端部
２５ 一端部
２６ 他端部
２７ ステー
２８ 支持片
２９ 支持片
３０ 結合片
３３ ラテラルロッド
３５ 軸心
３６ 枢支軸
４２ 一端部
４４ 他端部
Ａ 回動
Ｌ 離間寸法
Ｗ 溶接 DESCRIPTION OF SYMBOLS 1 Automobile 2 Car body 3 Lower member 5 Cross member 8 Axle housing 9 Rear wheel 14 Suspension device 18 Bracket 24 Projection end part 25 One end part 26 Other end part 27 Stay 28 Support piece 29 Support piece 30 Coupling piece 33 Lateral rod 35 Axle 36 Pivotal shaft 42 one end 44 other end A rotation L separation dimension W welding

Claims (1)

車体の下部部材の下方域で車体の幅方向に延び、かつ、昇降可能となるよう上記下部部材に弾性的に連結されるアクスルハウジングと、上記下部部材に取り付けられ、前後方向で互いに対面する前、後支持片と、車体の幅方向に延び、その長手方向の一端部が上記前、後支持片の間に配置されると共に、前後方向に延びる軸心回りに回動可能となるよう上記前、後支持片に枢支され、他端部が上記アクスルハウジングに枢支されるラテラルロッドとを備えた自動車の懸架装置において、
上記ラテラルロッドの一端部側における断面の外形形状を、上下に長い長円形状にしたことを特徴とする自動車の懸架装置。 An axle housing that extends in the width direction of the vehicle body in the lower region of the lower member of the vehicle body and is elastically connected to the lower member so as to be movable up and down, and attached to the lower member and before facing each other in the front-rear direction The rear support piece extends in the width direction of the vehicle body, and one end portion thereof in the longitudinal direction is disposed between the front and rear support pieces, and the front support piece is rotatable about an axis extending in the front-rear direction. In the suspension system of an automobile provided with a lateral rod pivotally supported by the rear support piece and the other end pivotally supported by the axle housing,
A suspension device for an automobile, wherein an outer shape of a cross section on one end side of the lateral rod is an ellipse that is long in the vertical direction.
JP2008211563A 2008-08-20 2008-08-20 Vehicular suspension system Pending JP2010047075A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008211563A JP2010047075A (en) 2008-08-20 2008-08-20 Vehicular suspension system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008211563A JP2010047075A (en) 2008-08-20 2008-08-20 Vehicular suspension system

Publications (1)

Publication Number Publication Date
JP2010047075A true JP2010047075A (en) 2010-03-04

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ID=42064552

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017154547A (en) * 2016-02-29 2017-09-07 スズキ株式会社 Vehicle body understructure
JP2021030978A (en) * 2019-08-28 2021-03-01 ダイハツ工業株式会社 Vehicle structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5671406U (en) * 1979-11-05 1981-06-12
JPH09175131A (en) * 1995-12-25 1997-07-08 Suzuki Motor Corp Lateral rod for vehicle
JP2001180241A (en) * 1999-12-24 2001-07-03 Daihatsu Motor Co Ltd Suspension

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5671406U (en) * 1979-11-05 1981-06-12
JPH09175131A (en) * 1995-12-25 1997-07-08 Suzuki Motor Corp Lateral rod for vehicle
JP2001180241A (en) * 1999-12-24 2001-07-03 Daihatsu Motor Co Ltd Suspension

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017154547A (en) * 2016-02-29 2017-09-07 スズキ株式会社 Vehicle body understructure
JP2021030978A (en) * 2019-08-28 2021-03-01 ダイハツ工業株式会社 Vehicle structure
JP7294763B2 (en) 2019-08-28 2023-06-20 ダイハツ工業株式会社 vehicle structure

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