WO2022209617A1 - Support bracket - Google Patents

Support bracket Download PDF

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Publication number
WO2022209617A1
WO2022209617A1 PCT/JP2022/009877 JP2022009877W WO2022209617A1 WO 2022209617 A1 WO2022209617 A1 WO 2022209617A1 JP 2022009877 W JP2022009877 W JP 2022009877W WO 2022209617 A1 WO2022209617 A1 WO 2022209617A1
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WO
WIPO (PCT)
Prior art keywords
support bracket
side plate
pair
vehicle
side frame
Prior art date
Application number
PCT/JP2022/009877
Other languages
French (fr)
Japanese (ja)
Inventor
裕亮 山梨
Original Assignee
三菱自動車工業株式会社
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Publication date
Application filed by 三菱自動車工業株式会社 filed Critical 三菱自動車工業株式会社
Publication of WO2022209617A1 publication Critical patent/WO2022209617A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members

Definitions

  • the present invention relates to support brackets.
  • a pair of leaf springs (suspension members) supported at both ends in the longitudinal direction are provided on the pair of side frames, and an intermediate portion of the pair of leaf springs provides a rear axle.
  • a rear suspension structure is known that supports cylindrical portions on both sides of a housing in the vehicle width direction (see Patent Document 1).
  • the front ends of the leaf springs are supported by support brackets joined to the pair of side frames.
  • the support bracket pivotally supports the front end of the leaf spring, and has a pair of side plate portions whose upper ends extend in the longitudinal direction of the vehicle along both side surfaces of the side frames and are joined to the side frames. and a connecting plate for simply joining between the rear ends of the pair of side plate portions.
  • the rear portion of the support bracket has relatively low rigidity because it is simply joined with the connecting plate, whereas the front portion of the support bracket has a width plate portion, so the rear portion of the support bracket has relatively low rigidity.
  • the rigidity is very high, and it has a structure that is difficult to follow the deformation of the side frame during driving.
  • stress tends to concentrate on the front-rear ends of the support bracket. For the above two reasons, there is a problem that damage such as cracks is likely to occur at the portion of the side frame that overlaps the front end portion of the support bracket provided with the width plate portion.
  • one embodiment of the present invention provides a support bracket that is joined to a side frame of a vehicle and supports a suspension member, comprising a pair of side plate portions that pivotally support the suspension member; a width plate portion provided between the end portions of the side plate portions on one side in the vehicle front-rear direction and closing the one side of the support bracket in the vehicle front-rear direction; Side plate joint portions extending in the vehicle front-rear direction along both side surfaces of the side frame and joined to the side frames are provided, respectively, and at least one of the pair of side plate portions is positioned in the vehicle front-rear direction of the side plate joint portion. It is characterized by having an elongated leg portion that extends upward along the side surface of the side frame from the end on one direction side and is joined to the side frame.
  • At least one of the pair of side plate portions has a side plate portion extending upward along the side surface of the side frame from the end portion of the side plate joint portion on one side in the vehicle front-rear direction.
  • a long leg piece that is joined to the frame is provided. Therefore, at the ends of the support bracket where stress concentration tends to occur, the area of the portion of the side frame that receives stress from the end can be increased by the leg piece, stress concentration can be alleviated, and damage to the side frame can be prevented. is advantageous.
  • FIG. 1 is a perspective view showing a configuration of a rear half of a vehicle to which a support bracket according to an embodiment is applied;
  • FIG. 1 is a side view showing the configuration of a rear half of a vehicle to which a support bracket according to an embodiment is applied;
  • FIG. It is the perspective view which looked at the support bracket from the vehicle width direction inner side.
  • It is the perspective view which looked at the support bracket from the vehicle width direction outer side.
  • Fig. 3 is a perspective view of a support bracket attached to a side frame, viewed from the inside in the vehicle width direction;
  • FIG. 4 is a perspective view of the support brackets attached to the side frames and the front ends of the leaf springs as seen from the outside in the vehicle width direction;
  • a support bracket according to an embodiment of the present invention will be described below with reference to the drawings.
  • reference numeral FR indicates the front of the vehicle
  • UP indicates the upper side of the vehicle
  • IN indicates the inner side in the vehicle width direction
  • OUT indicates the outer side in the vehicle width direction.
  • a vehicle 10 to which the support bracket 40 of the present invention is applied is a vehicle in which a cabin (not shown) is mounted on a frame having a pair of side frames 12 and a plurality of cross members. is called a so-called frame car.
  • the pair of side frames 12 are arranged on both sides in the vehicle width direction and extend in the vehicle front-rear direction.
  • a kick-up portion that gradually rises toward the rear of the vehicle is provided at an intermediate portion in the extending direction of the pair of side frames 12 .
  • 12A is formed.
  • the side frame 12 has a rectangular closed cross-sectional structure, and as shown in FIGS. 5 and 6, a pair of side surfaces 1202 and 1204 facing each other in the vehicle width direction and the lower ends of the pair of side surfaces 1202 and 1204 are connected. and a top surface 1208 connecting the upper ends of the pair of side surfaces 1202 and 1204 .
  • the plurality of cross members are arranged at intervals in the vehicle front-rear direction and connect the pair of side frames 12 .
  • the plurality of cross members include a center cross member 14 that connects kickup portions 12A, and a rear cross member 16 that is arranged behind center cross member 14 in the vehicle.
  • a vehicle 10 includes a rear suspension structure 20 that suspends a rear axle housing 18 from a vehicle body, and a support bracket 40 of the present invention is applied to the rear suspension structure 20.
  • the rear suspension structure 20 includes a pair of leaf springs 22 , a pair of shock absorbers 24 and a pair of bump rubbers 26 .
  • the leaf spring 22 corresponds to a suspension member.
  • the pair of leaf springs 22 absorbs vibrations and impacts from the road surface by elastic deformation of the pair of leaf springs 22 .
  • the pair of leaf springs 22 are arranged on both sides in the vehicle width direction, and are configured by vertically stacking a plurality of leaf springs extending in the vehicle front-rear direction.
  • the front and rear ends of the leaf springs 22 are provided with eyeballs (spring eyes) 22A and 22B, respectively, which form holes having axial centers in the vehicle width direction.
  • a shackle pin 28 (see FIG. 6) formed of a bolt 28A is inserted through a hole in the eyeball portion 22A at the front end of the leaf spring 22.
  • the eyeball portion 22A is attached to the lower portion near the front end of the kickup portion 12A via the shackle pin 28 and a support bracket 40, which will be described later. Therefore, the front ends of the leaf springs 22 are swingably supported by the side frames 12 via the shackle pins 28 . As shown in FIGS.
  • the shackle link 30 is swingably provided on a side surface 1204 of the side frame 12 positioned behind the rear cross member 16 and facing outward in the vehicle width direction.
  • An eyeball portion 22B at the rear end of the leaf spring 22 is pivotally supported on the free end of the shackle link 30. As shown in FIG.
  • the intermediate portion of the leaf spring 22 supports cylindrical portions 1802 on both sides of the rear axle housing 18 in the vehicle width direction via the couplings 32 .
  • the connecting member 32 includes, for example, a plate-shaped lower spring seat 34 that abuts against the lower portion of the tubular portion 1802 of the rear axle housing 18, and a lower spring seat 34 that rises from the lower spring seat 34 and attaches the tubular portion 1802 of the rear axle housing 18 to the lower spring. and two square U-bolts 36 sandwiched between the seat 34 and the leaf spring 22 from above and below.
  • the pair of shock absorbers 24 restrain the movement of the leaf springs 22 by expanding and contracting, and are provided on both sides in the vehicle width direction.
  • a lower end of the shock absorber 24 is pivotably connected to a cylindrical portion 1802 of the rear axle housing 18 located inside the leaf spring 22 in the vehicle width direction via a not-shown support shaft.
  • the upper end of the shock absorber 24 is swingably connected to the side frame 12 via a support shaft 2402 at a position displaced forward or rearward from the lower end of the shock absorber 24 in the longitudinal direction of the vehicle.
  • the pair of bump rubbers 26 is subjected to an excessive load from the road surface to the rear axle housing 18 when traveling on rough roads, and the intermediate portion of the leaf spring 22 is greatly bent upward.
  • the bump rubber 26 abuts on the lower portion of the side frame 12 to suppress the direct abutment of the leaf spring 22 on the lower portion of the side frame 12, thereby mitigating the impact.
  • the bump rubber 26 is made of an elastic material such as rubber, is attached to the upper surface of the leaf spring 22 between the two corner U bolts 36, and protrudes toward the bottom surface 1206 of the side frame 12.
  • a bump bracket 38 with which the upper end of the bump rubber 26 can contact is provided at the lower portion of the side frame 12 so that the upper end of the bump rubber 26 can stably contact the lower portion of the bump bracket 38. .
  • the support bracket 40 that supports the eyeball portion 22A at the front end of the leaf spring 22 will be described.
  • the support bracket 40 includes a pair of side plate portions 42, a width plate portion 46, a leg piece portion 50, a projecting piece portion 52, and a connecting plate 54. Except for 54, they are integrally molded from sheet metal.
  • the pair of side plate portions 42 are formed with shackle pin insertion holes 4002 and extend in the vehicle front-rear direction while facing each other in the vehicle width direction.
  • the eyeball portion 22A at the front end of the leaf spring 22 is arranged between the pair of side plate portions 42.
  • the shackle pin 28 (bolt 28A) inserted through the shackle pin insertion hole 4002 of the side plate portion 42 located on the outside in the vehicle width direction is inserted through the eyeball portion 22A, and the shackle pin insertion hole 4002 of the side plate portion 42 located on the inside in the vehicle width direction is inserted.
  • the peripheral edge portion 4004 of the shackle pin insertion hole 4002 of the pair of side plate portions 42 is It is provided so as to be displaced outward in the vehicle width direction, which is one side in the vehicle width direction, with respect to the portion other than the peripheral edge portion 4004 .
  • the leaf springs 22 are arranged in a state of being offset to one side (outside) in the vehicle width direction with respect to the center of the side frame 12 in the vehicle width direction. Such arrangement is due to the design convenience of the rear suspension structure 20 .
  • the pair of side plate portions 42 includes an upper edge 4202 extending in the vehicle front-rear direction, a front edge 4204 positioned at the vehicle front end of each side plate portion 42, and a vehicle rear end of each side plate portion 42. and a trailing edge 4206 .
  • the upper edges 4202 of the pair of side plate portions 42 and the rear edge upper portion 4206A positioned above the rear edge 4206 are arc-welded to both side surfaces 1202 and 1204 of the side frame 12 in the vehicle width direction.
  • the upper edge 4202, the front edge 4204, and the rear edge upper portion 4206A are provided at the upper end portions of the pair of side plate portions 42 and extend in the vehicle front-rear direction along the side surfaces 1202 and 1204 of the side frame 12 to A side plate joint portion 43 that is joined to 12 is formed.
  • the width plate portion 46 extends in the vehicle width direction and connects the front edges 4204 of the pair of side plate portions 42 . That is, the width plate portion 46 is provided between the ends of the pair of side plate portions 42 on one side in the vehicle front-rear direction, and closes the one side of the support bracket 40 in the vehicle front-rear direction.
  • a plate joint portion 47 that extends in the vehicle width direction along the bottom surface 1206 of the side frame 12 and is welded to the bottom surface 1206 of the side frame 12 is provided at one end of the width plate portion 46 in the vehicle front-rear direction. is provided.
  • Each of the pair of side plate portions 42 has an extended side plate portion 44 in which the side plate joint portion 43 is extended to one side in the vehicle front-rear direction. More specifically, the extended side plate portion 44 is provided so as to protrude forward of the vehicle from the vehicle front end portion of the upper portion of the pair of side plate portions 42 .
  • the upper edges 4402 of the extension side plate portions 44 extend forward of the vehicle continuously with the upper edges 4202 of the pair of side plate portions 42, and the front edges 4404 of the pair of extension side plate portions 44 located in front of the vehicle are extended to be described later. It is continuous with the front edge 4802 of the width plate portion 48 .
  • the upper edges 4402 of the pair of extended side plate portions 44 are arc-welded to both side surfaces 1202 and 1204 of the side frame 12 continuously with the upper edges 4202 of the pair of side plate portions 42 .
  • the leading edge 4404 is arc welded to the sides 1202 , 1204 of the side frame 12 . That is, the ends of the extended side plate portions 44 in the vehicle front-rear direction are joined to both side surfaces 1202 and 1204 of the side frames 12 .
  • the width plate portion 46 extends along the bottom surface 1206 of the side frame 12 along the bottom surface 1206 of the side frame 12 on one side in the vehicle front-rear direction so that the upper end side of the width plate portion 46 is aligned with the extension side plate portion 44 .
  • the extended width plate portion 48 has an extended width plate portion 48 connecting the .
  • the extended width plate portion 48 is provided so as to protrude forward of the vehicle from the vehicle front end portion of the upper portion of the width plate portion 46 , and extends in the vehicle width direction to connect the lower portions of the pair of extended side plate portions 44 . ing. Therefore, in the present embodiment, the extended width plate portion 48 is provided continuously with the end portion of the plate joint portion 47 in front of the vehicle. An end portion of the extended width plate portion 48 in the vehicle front-rear direction is joined along the bottom surface 1206 of the side frame 12 . Specifically, the front edge 4802 of the vehicle front end of the extended width plate portion 48 is arc-welded to the bottom surface 1206 of the side frame 12 .
  • the leg piece portion 50 is provided on at least one of the pair of side plate portions 42 , and extends along the side surface 1202 of the side frame 12 from the front end portion, which is one end portion of the side plate joint portion 43 in the longitudinal direction of the vehicle. It extends upward, is joined to the side frame 12, and has an elongated shape.
  • the leg portion 50 extends obliquely upward toward the front side, which is one side in the vehicle front-rear direction.
  • the leg piece portion 50 has a tapered shape toward the tip.
  • the leg portion 50 extends upward from the ridge formed by the side plate joint portion 43 and the plate joint portion 47 .
  • the leg piece portion 50 is provided on the side plate portion 42 on the inner side in the vehicle width direction, which is the other side in the vehicle width direction.
  • the leg piece portion 50 is provided on the side plate portion 42 on the side opposite to the side where the leaf spring 22 is offset in the vehicle width direction. More specifically, the leg piece portion 50 includes an upper edge 5002 positioned at the top, and a front edge 5004 and a rear edge 5006 that are connected to the ends of the upper edge 5002 in the longitudinal direction of the vehicle and extend downward. ing. An upper edge 5002 , a front edge 5004 and a rear edge 5006 of the leg portion 50 are arc-welded to the inner side surface 1202 of the side frame 12 in the vehicle width direction.
  • the protruding piece 52 is provided so as to protrude upward from the vehicle rear portion of the side plate portion 42 on the side where the leg piece 50 is provided.
  • the projecting piece portion 52 is provided at the end of the side plate portion 42 on the side where the leg piece portion 50 is provided, which is opposite to the leg piece portion 50 in the vehicle front-rear direction.
  • projecting piece 52 projects obliquely upward behind vehicle 10 . Therefore, the projecting piece portion 52 includes an upper edge 5202 located at the upper portion, and a front edge 5204 and a rear edge 5206 that are connected to and extend from the ends of the upper edge 5202 in the vehicle front-rear direction.
  • An upper edge 5202 , a front edge 5204 and a rear edge 5206 of the projecting piece 52 are arc-welded to the inner side surface 1202 of the side frame 12 .
  • the rear edge upper portions 4206A of the pair of side plate portions 42 are welded to both side surfaces 1202 and 1204 of the side frame 12 by arc welding. Therefore, on the inner side surface 1202 of the side frame 12, the arc welding of the rear edge 5206 of the projecting piece 52 and the upper rear edge 4206A of the side plate 42 to the side frame 12 is continuous.
  • the front edge 4802 of the extended width plate portion 48, the front edge 4404 of the extended side plate portion 44, the front edge 5004, the upper edge 5002, and the rear edge 5006 of the leg portion 50, the upper edge 4402 of the extended side plate portion 44, and the side plate portion 42 The arc welding of the upper edge 4202, the front edge 5204, the upper edge 5202, the rear edge 5206 of the projecting piece 52, and the rear edge upper portion 4206A of the side plate portion 42 to the side frame 12 is continuous.
  • the connecting plate 54 extends in the vehicle width direction and is joined by welding between the upper end portions of the pair of side plate portions 42 located at the rear of the vehicle, thereby connecting the end portions. .
  • the upper edge 5402 of the connecting plate 54 is arc-welded to the bottom surface 1206 of the side frame 12 .
  • the rear portion of the support bracket 40 has relatively low rigidity because it is simply joined by the connecting plate 54 , whereas the front portion of the support bracket 40 is provided with the width plate portion 46 .
  • the rigidity of the rear part of the support bracket 40 is significantly higher than that of the rear part of the support bracket 40, and the structure is such that it is difficult to follow the deformation of the side frame 12 during running.
  • the support bracket 40 pivotally supports the front end of the leaf spring 22 , stress tends to concentrate on the front end of the support bracket 40 , and the side frame 12 overlaps the front end of the support bracket 40 . Damage such as cracks is likely to occur at the location of .
  • the leg piece 50 may be projected directly upward. Compared to the case where the legs 50 project straight up, the vertical load that acts greatly when traveling on rough roads is transferred to the side frames 12 on the inner side in the vehicle width direction via the front edges 5004, upper edges 5002, and rear edges 5006 of the leg pieces 50. It is advantageous to spread widely on the side 1202 of the . Therefore, stress concentration can be relieved, which is more advantageous in preventing damage to the side frame 12 .
  • the leg piece portion 50 is tapered toward the tip, so that when the support bracket 40 receives an impact load while traveling on a rough road, the support bracket 40 does not move toward the side frame 12 . , stress concentration can be alleviated, which is more advantageous in preventing damage to the side frame 12 .
  • the leg piece portion 50 extends upward from the ridgeline formed by the side plate joint portion 43 and the plate joint portion 47, the plate joint portion joined to the bottom surface 1206 of the side frame 12 47 can alleviate the stress concentration on the ridge peripheral portion where the rigidity is increased, which is more advantageous in preventing damage to the side frame 12 .
  • the ends of the extended side plate portion 44 and the extended width plate portion 48 in the vehicle front-rear direction are joined along the side surface 1202 and the bottom surface 1206 of the side frame 12 . Therefore, when the support bracket 40 receives an impact load while traveling on a rough road, the extended side plate portion 44 and the extended width plate portion 48 allow the support bracket 40 to follow the side frame 12 more. As a result, stress concentration on the side frames 12 can be alleviated, which is more advantageous in preventing damage to the side frames 12 .
  • the leaf springs 22 are arranged in a state of being offset to one side in the vehicle width direction (outer side in the vehicle width direction) with respect to the center of the side frame 12 in the vehicle width direction.
  • a large load is applied to the side plate portion 42 on the other side in the vehicle width direction, which is arranged at a farther position.
  • the leg piece portion 50 is provided on the side plate portion 42 on the other side in the vehicle width direction (inside in the vehicle width direction), stress concentration on the side frame 12 caused by such a load can be alleviated. , is more advantageous in preventing damage to the side frame 12 .
  • the projecting piece portion 52 joined to the side frame 12 is provided at the end of the side plate portion 42 on the side where the leg piece portion 50 is provided, which is opposite to the leg piece portion 50 in the longitudinal direction of the vehicle. It is Therefore, since the area of the portion of the side frame 12 that receives stress from the support bracket 40 can be further increased by the protruding piece portion 52, the concentration of stress on the side frame 12 due to the load can be further alleviated, and the side frame 12 can be damaged. It is even more advantageous in preventing
  • suspension member supported by the support bracket 40 is the leaf spring 22
  • suspension member supported by the support bracket 40 is not limited. can be applied to support brackets that support various suspension members of

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

This support bracket is provided with: a pair of side panel parts that axially support a suspension member; and a wide panel part which is provided between the ends of the pair of side panel parts on one side in the vehicle front–rear direction and which closes off one side of the support bracket in the vehicle front–rear direction. The upper ends of the pair of side panel parts are each provided with a side panel joint which extends along both sides of a side frame in the vehicle front–rear direction and which is joined to the side frame. At least one of the pair of side panel parts has an elongated leg piece which extends upward from the end on one side of the side panel part in the vehicle front–rear direction and along the lateral surface of the side frame and which is joined to the side frame.

Description

支持ブラケットsupport bracket
　本発明は、支持ブラケットに関する。 The present invention relates to support brackets.
　一対のサイドフレームと複数のクロスメンバを備えるいわゆるフレーム車において、一対のサイドフレームに長手方向の両端が支持された一対のリーフスプリング（サスペンション部材）を設け、一対のリーフスプリングの中間部によりリアアクスルハウジングの車幅方向両側の筒部を支持するリアサスペンション構造が知られている（特許文献１参照）。
　そして、この構造では、一対のサイドフレームに接合された支持ブラケットによりリーフスプリングの前端が支持されている。
　支持ブラケットは、リーフスプリングの前端を軸支すると共に、その上端部がサイドフレームの両側面に沿って車両前後方向に延在してサイドフレームに接合される一対の側板部と、一対の側板部の前方の端部間に亘って設けられ、支持ブラケットの前方側を塞ぐ幅板部と、一対の側板部の後方の端部間を簡易的に接合する連結板と、を備えている。 In a so-called frame vehicle comprising a pair of side frames and a plurality of cross members, a pair of leaf springs (suspension members) supported at both ends in the longitudinal direction are provided on the pair of side frames, and an intermediate portion of the pair of leaf springs provides a rear axle. A rear suspension structure is known that supports cylindrical portions on both sides of a housing in the vehicle width direction (see Patent Document 1).
In this structure, the front ends of the leaf springs are supported by support brackets joined to the pair of side frames.
The support bracket pivotally supports the front end of the leaf spring, and has a pair of side plate portions whose upper ends extend in the longitudinal direction of the vehicle along both side surfaces of the side frames and are joined to the side frames. and a connecting plate for simply joining between the rear ends of the pair of side plate portions.
日本国特開２０１６－１１７４１４号公報Japanese Patent Application Laid-Open No. 2016-117414
　したがって、支持ブラケットの後部は、連結板で簡易的に接合されていることから比較的剛性が低いのに対して、支持ブラケットの前部は幅板部が設けられていることから支持ブラケットの後部に比較して剛性が非常に高く、走行時におけるサイドフレームの変形に対して追従しにくい構造となっている。
　さらに、一般的に、支持ブラケットの前後方向の端部には応力が集中しやすい。
　以上２つの理由が相まって、幅板部が設けられた支持ブラケットの前端部と重なるサイドフレームの箇所には、割れ等の損傷が生じ易くなる問題がある。
　そのため、支持ブラケットが取り付けられたサイドフレームの箇所の損傷を抑制し、サイドフレームの耐久性の向上を図る上で図る上で何らかの改善が求められている。
　本発明は、上記事情に鑑みなされたものであり、支持ブラケットからサイドフレームに加わる応力の集中を緩和し、サイドフレームの損傷の防止を図る上で有利な支持ブラケットを提供することを目的とする。 Therefore, the rear portion of the support bracket has relatively low rigidity because it is simply joined with the connecting plate, whereas the front portion of the support bracket has a width plate portion, so the rear portion of the support bracket has relatively low rigidity. Compared to , the rigidity is very high, and it has a structure that is difficult to follow the deformation of the side frame during driving.
Furthermore, in general, stress tends to concentrate on the front-rear ends of the support bracket.
For the above two reasons, there is a problem that damage such as cracks is likely to occur at the portion of the side frame that overlaps the front end portion of the support bracket provided with the width plate portion.
Therefore, there is a demand for some improvement in order to suppress damage to the portion of the side frame to which the support bracket is attached and improve the durability of the side frame.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a support bracket that is advantageous in reducing the concentration of stress applied from the support bracket to the side frame and preventing damage to the side frame. .
　上記目的を達成するために、本発明の一実施の形態は、車両のサイドフレームに接合されサスペンション部材を支持する支持ブラケットであって、前記サスペンション部材を軸支する一対の側板部と、前記一対の側板部の車両前後方向一方側の端部間に亘って設けられ、前記支持ブラケットの車両前後方向一方側を塞ぐ幅板部と、を備え、前記一対の側板部の上端部には、前記サイドフレームの両側面に沿って車両前後方向に延在し、該サイドフレームに接合される側板接合部がそれぞれ設けられ、前記一対の側板部のうちの少なくとも一方は、前記側板接合部の車両前後方向一方側の端部から前記サイドフレームの側面に沿って上方に延在し、該サイドフレームに接合される長尺状の脚片部を有していることを特徴とする。 To achieve the above object, one embodiment of the present invention provides a support bracket that is joined to a side frame of a vehicle and supports a suspension member, comprising a pair of side plate portions that pivotally support the suspension member; a width plate portion provided between the end portions of the side plate portions on one side in the vehicle front-rear direction and closing the one side of the support bracket in the vehicle front-rear direction; Side plate joint portions extending in the vehicle front-rear direction along both side surfaces of the side frame and joined to the side frames are provided, respectively, and at least one of the pair of side plate portions is positioned in the vehicle front-rear direction of the side plate joint portion. It is characterized by having an elongated leg portion that extends upward along the side surface of the side frame from the end on one direction side and is joined to the side frame.
　本発明の一実施の形態によれば、一対の側板部のうちの少なくとも一方に、側板接合部の車両前後方向一方側の端部からサイドフレームの側面に沿って上方に延在し、該サイドフレームに接合される長尺状の脚片部を設けた。
　したがって、応力集中が生じやすい支持ブラケットの端部において、端部から応力を受けるサイドフレームの部分の面積を脚片部によって増やすことができるため、応力集中を緩和できサイドフレームの損傷を防止する上で有利となる。 According to one embodiment of the present invention, at least one of the pair of side plate portions has a side plate portion extending upward along the side surface of the side frame from the end portion of the side plate joint portion on one side in the vehicle front-rear direction. A long leg piece that is joined to the frame is provided.
Therefore, at the ends of the support bracket where stress concentration tends to occur, the area of the portion of the side frame that receives stress from the end can be increased by the leg piece, stress concentration can be alleviated, and damage to the side frame can be prevented. is advantageous.
実施の形態に係る支持ブラケットが適用された車両の後半部の構成を示す斜視図である。1 is a perspective view showing a configuration of a rear half of a vehicle to which a support bracket according to an embodiment is applied; FIG. 実施の形態に係る支持ブラケットが適用された車両の後半部の構成を示す側面図である。1 is a side view showing the configuration of a rear half of a vehicle to which a support bracket according to an embodiment is applied; FIG. 支持ブラケットを車幅方向内側から見た斜視図である。It is the perspective view which looked at the support bracket from the vehicle width direction inner side. 支持ブラケットを車幅方向外側から見た斜視図である。It is the perspective view which looked at the support bracket from the vehicle width direction outer side. サイドフレームに取り付けられた支持ブラケットを車幅方向内側から見た斜視図である。Fig. 3 is a perspective view of a support bracket attached to a side frame, viewed from the inside in the vehicle width direction; サイドフレームに取り付けられた支持ブラケットとリーフスプリングの前端を車幅方向外側から見た斜視図である。FIG. 4 is a perspective view of the support brackets attached to the side frames and the front ends of the leaf springs as seen from the outside in the vehicle width direction;
　以下、本発明の実施の形態に係る支持ブラケットについて図面を参照して説明する。
　なお、以下の図面において、符号ＦＲは車両前方、符号ＵＰは車両上方、符号ＩＮは車幅方向内側、ＯＵＴは車幅方向外側を示す。
　図１、図２に示すように、本発明の支持ブラケット４０が適用される車両１０は、一対のサイドフレーム１２と複数のクロスメンバとを備えるフレームに不図示のキャビンが搭載された車両であり、いわゆるフレーム車と呼ばれている。
　一対のサイドフレーム１２は、車幅方向両側に配置され車両前後方向に延在しており、一対のサイドフレーム１２の延在方向の中間部には、車両後方に至るにつれて次第に上昇するキックアップ部１２Ａが形成されている。
　サイドフレーム１２は、矩形状の閉断面構造を呈しており、図５、図６に示すように、車幅方向で対向する一対の側面１２０２、１２０４と、一対の側面１２０２、１２０４の下端を接続する底面１２０６と、一対の側面１２０２、１２０４の上端を接続する上面１２０８と、を備えている。
　複数のクロスメンバは、車両前後方向において間隔をおいて配置され一対のサイドフレーム１２を連結している。
　本実施の形態では、複数のクロスメンバは、キックアップ部１２Ａを連結するセンタークロスメンバ１４と、センタークロスメンバ１４の車両後方に配置されるリアクロスメンバ１６と、を含んでいる。 A support bracket according to an embodiment of the present invention will be described below with reference to the drawings.
In the following drawings, reference numeral FR indicates the front of the vehicle, UP indicates the upper side of the vehicle, IN indicates the inner side in the vehicle width direction, and OUT indicates the outer side in the vehicle width direction.
As shown in FIGS. 1 and 2, a vehicle 10 to which the support bracket 40 of the present invention is applied is a vehicle in which a cabin (not shown) is mounted on a frame having a pair of side frames 12 and a plurality of cross members. is called a so-called frame car.
The pair of side frames 12 are arranged on both sides in the vehicle width direction and extend in the vehicle front-rear direction. A kick-up portion that gradually rises toward the rear of the vehicle is provided at an intermediate portion in the extending direction of the pair of side frames 12 . 12A is formed.
The side frame 12 has a rectangular closed cross-sectional structure, and as shown in FIGS. 5 and 6, a pair of side surfaces 1202 and 1204 facing each other in the vehicle width direction and the lower ends of the pair of side surfaces 1202 and 1204 are connected. and a top surface 1208 connecting the upper ends of the pair of side surfaces 1202 and 1204 .
The plurality of cross members are arranged at intervals in the vehicle front-rear direction and connect the pair of side frames 12 .
In the present embodiment, the plurality of cross members include a center cross member 14 that connects kickup portions 12A, and a rear cross member 16 that is arranged behind center cross member 14 in the vehicle.
　図１、図２に示すように、車両１０は、車体に対してリアアクスルハウジング１８を懸架するリアサスペンション構造２０を備えており、リアサスペンション構造２０に本発明の支持ブラケット４０が適用されている。
　本実施の形態では、リアサスペンション構造２０は、一対のリーフスプリング２２、一対のショックアブソーバ２４、一対のバンプラバー２６を含む。
　なお、本実施の形態では、リーフスプリング２２がサスペンション部材に相当している。
　一対のリーフスプリング２２は、それら一対のリーフスプリング２２が弾性変形することにより路面からの振動や衝撃を吸収する。一対のリーフスプリング２２は、車幅方向両側にそれぞれ配置され、車両前後方向に延在する複数の板ばねが上下方向に重ね合わされて構成されている。
　リーフスプリング２２の前端と後端には、それぞれ車幅方向に軸心を有する孔を構成する目玉部（スプリングアイ）２２Ａ、２２Ｂがそれぞれ設けられている。
　リーフスプリング２２の前端の目玉部２２Ａの孔に、ボルト２８Ａで形成されたシャックルピン２８（図６参照）が挿通される。目玉部２２Ａは、このシャックルピン２８と後述する支持ブラケット４０を介してキックアップ部１２Ａの前端寄りの下部に取り付けられている。
　したがって、リーフスプリング２２の前端は、シャックルピン２８を介してサイドフレーム１２に揺動可能に支持されている。
　図１、図２に示すように、リアクロスメンバ１６の後方に位置するサイドフレーム１２の車幅方向外側を向いた側面１２０４にシャックルリンク３０が揺動可能に設けられる。リーフスプリング２２の後端の目玉部２２Ｂはこのシャックルリンク３０の自由端に枢支されている。 As shown in FIGS. 1 and 2, a vehicle 10 includes a rear suspension structure 20 that suspends a rear axle housing 18 from a vehicle body, and a support bracket 40 of the present invention is applied to the rear suspension structure 20. .
In this embodiment, the rear suspension structure 20 includes a pair of leaf springs 22 , a pair of shock absorbers 24 and a pair of bump rubbers 26 .
In addition, in this embodiment, the leaf spring 22 corresponds to a suspension member.
The pair of leaf springs 22 absorbs vibrations and impacts from the road surface by elastic deformation of the pair of leaf springs 22 . The pair of leaf springs 22 are arranged on both sides in the vehicle width direction, and are configured by vertically stacking a plurality of leaf springs extending in the vehicle front-rear direction.
The front and rear ends of the leaf springs 22 are provided with eyeballs (spring eyes) 22A and 22B, respectively, which form holes having axial centers in the vehicle width direction.
A shackle pin 28 (see FIG. 6) formed of a bolt 28A is inserted through a hole in the eyeball portion 22A at the front end of the leaf spring 22. As shown in FIG. The eyeball portion 22A is attached to the lower portion near the front end of the kickup portion 12A via the shackle pin 28 and a support bracket 40, which will be described later.
Therefore, the front ends of the leaf springs 22 are swingably supported by the side frames 12 via the shackle pins 28 .
As shown in FIGS. 1 and 2 , the shackle link 30 is swingably provided on a side surface 1204 of the side frame 12 positioned behind the rear cross member 16 and facing outward in the vehicle width direction. An eyeball portion 22B at the rear end of the leaf spring 22 is pivotally supported on the free end of the shackle link 30. As shown in FIG.
　図１に示すように、リーフスプリング２２の中間部は、連結具３２を介してリアアクスルハウジング１８の車幅方向両側の筒部１８０２を支持している。
　連結具３２は、例えば、板状を呈しリアアクスルハウジング１８の筒部１８０２の下部に当接された下部スプリングシート３４と、下部スプリングシート３４から起立しリアアクスルハウジング１８の筒部１８０２を下部スプリングシート３４とリーフスプリング２２とにより上下方向から挟持させる２本の角Ｕボルト３６と、を含む。 As shown in FIG. 1 , the intermediate portion of the leaf spring 22 supports cylindrical portions 1802 on both sides of the rear axle housing 18 in the vehicle width direction via the couplings 32 .
The connecting member 32 includes, for example, a plate-shaped lower spring seat 34 that abuts against the lower portion of the tubular portion 1802 of the rear axle housing 18, and a lower spring seat 34 that rises from the lower spring seat 34 and attaches the tubular portion 1802 of the rear axle housing 18 to the lower spring. and two square U-bolts 36 sandwiched between the seat 34 and the leaf spring 22 from above and below.
　図１、図２に示すように、一対のショックアブソーバ２４は、それらが伸縮することでリーフスプリング２２の動きを抑制するものであり、車幅方向両側にそれぞれ設けられている。
　ショックアブソーバ２４の下端は、リーフスプリング２２よりも車幅方向内側に位置するリアアクスルハウジング１８の筒部１８０２に不図示の支軸を介して揺動可能に連結されている。
　図２に示すように、ショックアブソーバ２４の上端は、車両前後方向においてショックアブソーバ２４の下端よりも前方または後方に変位した箇所でサイドフレーム１２に支軸２４０２を介して揺動可能に連結されている。 As shown in FIGS. 1 and 2, the pair of shock absorbers 24 restrain the movement of the leaf springs 22 by expanding and contracting, and are provided on both sides in the vehicle width direction.
A lower end of the shock absorber 24 is pivotably connected to a cylindrical portion 1802 of the rear axle housing 18 located inside the leaf spring 22 in the vehicle width direction via a not-shown support shaft.
As shown in FIG. 2, the upper end of the shock absorber 24 is swingably connected to the side frame 12 via a support shaft 2402 at a position displaced forward or rearward from the lower end of the shock absorber 24 in the longitudinal direction of the vehicle. there is
　図１、図２に示すように、一対のバンプラバー２６は、悪路走行時などに路面から過大な荷重がリアアクスルハウジング１８に入力してリーフスプリング２２の中間部が上方に大きく撓んだときに、バンプラバー２６がサイドフレーム１２の下部に当接することでリーフスプリング２２がサイドフレーム１２の下部に直接当接することを抑制して衝撃を緩和するものである。
　バンプラバー２６は、ゴムなどの弾性体で構成され、２つの角Ｕボルト３６の間に位置するリーフスプリング２２の上面の箇所に取り付けられサイドフレーム１２の底面１２０６に向かって突設されている。
　サイドフレーム１２の下部には、バンプラバー２６の上端が当接可能なバンプブラケット３８が設けられており、バンプラバー２６の上端がバンプブラケット３８の下部に安定して当接するように図られている。 As shown in FIGS. 1 and 2, the pair of bump rubbers 26 is subjected to an excessive load from the road surface to the rear axle housing 18 when traveling on rough roads, and the intermediate portion of the leaf spring 22 is greatly bent upward. In some cases, the bump rubber 26 abuts on the lower portion of the side frame 12 to suppress the direct abutment of the leaf spring 22 on the lower portion of the side frame 12, thereby mitigating the impact.
The bump rubber 26 is made of an elastic material such as rubber, is attached to the upper surface of the leaf spring 22 between the two corner U bolts 36, and protrudes toward the bottom surface 1206 of the side frame 12. As shown in FIG.
A bump bracket 38 with which the upper end of the bump rubber 26 can contact is provided at the lower portion of the side frame 12 so that the upper end of the bump rubber 26 can stably contact the lower portion of the bump bracket 38. .
　次に、リーフスプリング２２の前端の目玉部２２Ａを支持する支持ブラケット４０について説明する。
　図３から図６に示すように、支持ブラケット４０は、一対の側板部４２と、幅板部４６と、脚片部５０と、突出片部５２と、連結板５４と、を含み、連結板５４を除いて板金により一体成形されている。 Next, the support bracket 40 that supports the eyeball portion 22A at the front end of the leaf spring 22 will be described.
As shown in FIGS. 3 to 6, the support bracket 40 includes a pair of side plate portions 42, a width plate portion 46, a leg piece portion 50, a projecting piece portion 52, and a connecting plate 54. Except for 54, they are integrally molded from sheet metal.
　一対の側板部４２は、シャックルピン挿通孔４００２が形成され車幅方向において対向しつつ車両前後方向に延在している。
　図６に示すように、リーフスプリング２２の前端の目玉部２２Ａは、一対の側板部４２の間に配置される。車幅方向外側に位置する側板部４２のシャックルピン挿通孔４００２を挿通したシャックルピン２８（ボルト２８Ａ）が目玉部２２Ａを挿通して車幅方向内側に位置する側板部４２のシャックルピン挿通孔４００２に挿通されている。
　そして、車幅方向内側のシャックルピン挿通孔４００２から突出するシャックルピン２８の先部の雄ねじ部（不図示）にナット（不図示）が締結されることで、リーフスプリング２２の前端の目玉部２２Ａは、シャックルピン２８と支持ブラケット４０を介してサイドフレーム１２の下部に取り付けられている。
　したがって、一対の側板部４２は、サスペンション部材を構成するリーフスプリング２２を軸支している。
　図５、図６に示すように、本実施の形態では、支持ブラケット４０がサイドフレーム１２の下部に取り付けられた状態で、一対の側板部４２のうちシャックルピン挿通孔４００２の周縁部４００４は、周縁部４００４を除く部分に対して車幅方向の一方側である車幅方向外側に偏位して設けられている。
　これにより、リーフスプリング２２は、サイドフレーム１２の車幅方向中央に対して車幅方向の一方側（外側）にオフセットした状態で配置されている。このような配置はリアサスペンション構造２０の設計上の都合によるものである。 The pair of side plate portions 42 are formed with shackle pin insertion holes 4002 and extend in the vehicle front-rear direction while facing each other in the vehicle width direction.
As shown in FIG. 6, the eyeball portion 22A at the front end of the leaf spring 22 is arranged between the pair of side plate portions 42. As shown in FIG. The shackle pin 28 (bolt 28A) inserted through the shackle pin insertion hole 4002 of the side plate portion 42 located on the outside in the vehicle width direction is inserted through the eyeball portion 22A, and the shackle pin insertion hole 4002 of the side plate portion 42 located on the inside in the vehicle width direction is inserted. is inserted into the
A nut (not shown) is fastened to a male threaded portion (not shown) at the tip of the shackle pin 28 projecting from the shackle pin insertion hole 4002 on the inner side in the vehicle width direction, whereby the eyeball portion 22A at the front end of the leaf spring 22 is tightened. is attached to the lower portion of the side frame 12 via a shackle pin 28 and a support bracket 40. As shown in FIG.
Therefore, the pair of side plate portions 42 pivotally support the leaf springs 22 that constitute the suspension member.
As shown in FIGS. 5 and 6, in the present embodiment, when the support bracket 40 is attached to the lower portion of the side frame 12, the peripheral edge portion 4004 of the shackle pin insertion hole 4002 of the pair of side plate portions 42 is It is provided so as to be displaced outward in the vehicle width direction, which is one side in the vehicle width direction, with respect to the portion other than the peripheral edge portion 4004 .
Thus, the leaf springs 22 are arranged in a state of being offset to one side (outside) in the vehicle width direction with respect to the center of the side frame 12 in the vehicle width direction. Such arrangement is due to the design convenience of the rear suspension structure 20 .
　一対の側板部４２は、車両前後方向に延在する上縁４２０２と、各側板部４２の車両前方の端部に位置する前縁４２０４と、各側板部４２の車両後方の端部に位置する後縁４２０６と、を有している。
　一対の側板部４２の上縁４２０２と、後縁４２０６の上部に位置する後縁上部４２０６Ａは、サイドフレーム１２の車幅方向の両側面１２０２、１２０４にアーク溶接されている。
　したがって、上縁４２０２、前縁４２０４、後縁上部４２０６Ａは、一対の側板部４２の上端部に設けられ、サイドフレーム１２の両側面１２０２、１２０４に沿って車両前後方向に延在し、サイドフレーム１２に接合される側板接合部４３を構成している。 The pair of side plate portions 42 includes an upper edge 4202 extending in the vehicle front-rear direction, a front edge 4204 positioned at the vehicle front end of each side plate portion 42, and a vehicle rear end of each side plate portion 42. and a trailing edge 4206 .
The upper edges 4202 of the pair of side plate portions 42 and the rear edge upper portion 4206A positioned above the rear edge 4206 are arc-welded to both side surfaces 1202 and 1204 of the side frame 12 in the vehicle width direction.
Accordingly, the upper edge 4202, the front edge 4204, and the rear edge upper portion 4206A are provided at the upper end portions of the pair of side plate portions 42 and extend in the vehicle front-rear direction along the side surfaces 1202 and 1204 of the side frame 12 to A side plate joint portion 43 that is joined to 12 is formed.
　図５、図６に示すように、幅板部４６は、車幅方向に延在して一対の側板部４２の前縁４２０４を接続している。
　すなわち、幅板部４６は、一対の側板部４２の車両前後方向一方側の端部間に亘って設けられ、支持ブラケット４０の車両前後方向一方側を塞いでいる。
　幅板部４６の車両前後方向一方側の端部には、サイドフレーム１２の底面１２０６に沿って車幅方向に延在し、サイドフレーム１２の底面１２０６に溶接により接合される板接合部４７が設けられている。 As shown in FIGS. 5 and 6 , the width plate portion 46 extends in the vehicle width direction and connects the front edges 4204 of the pair of side plate portions 42 .
That is, the width plate portion 46 is provided between the ends of the pair of side plate portions 42 on one side in the vehicle front-rear direction, and closes the one side of the support bracket 40 in the vehicle front-rear direction.
A plate joint portion 47 that extends in the vehicle width direction along the bottom surface 1206 of the side frame 12 and is welded to the bottom surface 1206 of the side frame 12 is provided at one end of the width plate portion 46 in the vehicle front-rear direction. is provided.
　一対の側板部４２は、それぞれ側板接合部４３が車両前後方向一方側に延長された延長側板部４４を有している。
　詳細に説明すると、延長側板部４４は、一対の側板部４２の上部の車両前方の端部から車両前方に突出して設けられている。
　延長側板部４４の上縁４４０２は、一対の側板部４２の上縁４２０２に連続して車両前方に延在し、一対の延長側板部４４の車両前方に位置する前縁４４０４は、後述する延長幅板部４８の前縁４８０２と連続している。
　一対の延長側板部４４の上縁４４０２は、一対の側板部４２の上縁４２０２に連続してサイドフレーム１２の両側面１２０２、１２０４にアーク溶接される。前縁４４０４はサイドフレーム１２の両側面１２０２、１２０４にアーク溶接されている。
　すなわち、延長側板部４４の車両前後方向の端部がサイドフレーム１２の両側面１２０２、１２０４に接合されている。
　本実施の形態では、幅板部４６は、上端部側が延長側板部４４に合わせて車両前後方向一方側にサイドフレーム１２の底面１２０６に沿って延長され、一対の側板部４２の延長側板部４４を接続する延長幅板部４８を有している。
　言い換えると、延長幅板部４８は、幅板部４６の上部の車両前方の端部から車両前方に突出して設けられ、車幅方向に延在して一対の延長側板部４４の下部を接続している。したがって、本実施の形態では、延長幅板部４８は、板接合部４７の車両前方の端部に連続して設けられている。
　延長幅板部４８の車両前後方向の端部がサイドフレーム１２の底面１２０６に沿って接合されている。
　詳細には、延長幅板部４８の車両前方の端部の前縁４８０２は、サイドフレーム１２の底面１２０６にアーク溶接されている。 Each of the pair of side plate portions 42 has an extended side plate portion 44 in which the side plate joint portion 43 is extended to one side in the vehicle front-rear direction.
More specifically, the extended side plate portion 44 is provided so as to protrude forward of the vehicle from the vehicle front end portion of the upper portion of the pair of side plate portions 42 .
The upper edges 4402 of the extension side plate portions 44 extend forward of the vehicle continuously with the upper edges 4202 of the pair of side plate portions 42, and the front edges 4404 of the pair of extension side plate portions 44 located in front of the vehicle are extended to be described later. It is continuous with the front edge 4802 of the width plate portion 48 .
The upper edges 4402 of the pair of extended side plate portions 44 are arc-welded to both side surfaces 1202 and 1204 of the side frame 12 continuously with the upper edges 4202 of the pair of side plate portions 42 . The leading edge 4404 is arc welded to the sides 1202 , 1204 of the side frame 12 .
That is, the ends of the extended side plate portions 44 in the vehicle front-rear direction are joined to both side surfaces 1202 and 1204 of the side frames 12 .
In the present embodiment, the width plate portion 46 extends along the bottom surface 1206 of the side frame 12 along the bottom surface 1206 of the side frame 12 on one side in the vehicle front-rear direction so that the upper end side of the width plate portion 46 is aligned with the extension side plate portion 44 . It has an extended width plate portion 48 connecting the .
In other words, the extended width plate portion 48 is provided so as to protrude forward of the vehicle from the vehicle front end portion of the upper portion of the width plate portion 46 , and extends in the vehicle width direction to connect the lower portions of the pair of extended side plate portions 44 . ing. Therefore, in the present embodiment, the extended width plate portion 48 is provided continuously with the end portion of the plate joint portion 47 in front of the vehicle.
An end portion of the extended width plate portion 48 in the vehicle front-rear direction is joined along the bottom surface 1206 of the side frame 12 .
Specifically, the front edge 4802 of the vehicle front end of the extended width plate portion 48 is arc-welded to the bottom surface 1206 of the side frame 12 .
　脚片部５０は、一対の側板部４２のうちの少なくとも一方に設けられ、側板接合部４３の車両前後方向一方側の端部である前方側の端部からサイドフレーム１２の側面１２０２に沿って上方に延在し、該サイドフレーム１２に接合され、長尺状を呈している。
　脚片部５０は、車両前後方向一方側である前方側に向かって斜め上方に延在している。
　脚片部５０は、先端に向かうにつれて先細りの形状を呈している。
　脚片部５０は、側板接合部４３と板接合部４７とによって形成される稜線から上方に延びている。
　脚片部５０は、車両幅方向の他方側である車幅方向内側の側板部４２に設けられている。言い換えると、脚片部５０は、車幅方向において、リーフスプリング２２がオフセットされた側と反対側の側板部４２に設けられている。
　詳細に説明すると、脚片部５０は、上部に位置する上縁５００２と、上縁５００２の車両前後方向の端部に接続されて下方に延在する前縁５００４と後縁５００６と、を備えている。
　脚片部５０の上縁５００２、前縁５００４、後縁５００６は、サイドフレーム１２の車幅方向内側の側面１２０２にアーク溶接されている。 The leg piece portion 50 is provided on at least one of the pair of side plate portions 42 , and extends along the side surface 1202 of the side frame 12 from the front end portion, which is one end portion of the side plate joint portion 43 in the longitudinal direction of the vehicle. It extends upward, is joined to the side frame 12, and has an elongated shape.
The leg portion 50 extends obliquely upward toward the front side, which is one side in the vehicle front-rear direction.
The leg piece portion 50 has a tapered shape toward the tip.
The leg portion 50 extends upward from the ridge formed by the side plate joint portion 43 and the plate joint portion 47 .
The leg piece portion 50 is provided on the side plate portion 42 on the inner side in the vehicle width direction, which is the other side in the vehicle width direction. In other words, the leg piece portion 50 is provided on the side plate portion 42 on the side opposite to the side where the leaf spring 22 is offset in the vehicle width direction.
More specifically, the leg piece portion 50 includes an upper edge 5002 positioned at the top, and a front edge 5004 and a rear edge 5006 that are connected to the ends of the upper edge 5002 in the longitudinal direction of the vehicle and extend downward. ing.
An upper edge 5002 , a front edge 5004 and a rear edge 5006 of the leg portion 50 are arc-welded to the inner side surface 1202 of the side frame 12 in the vehicle width direction.
　図５に示すように、突出片部５２は、脚片部５０が設けられた側の側板部４２の車両後方部分に上方に向かって突出して設けられている。
　言い換えると、突出片部５２は、脚片部５０が設けられた側の側板部４２の車両前後方向において脚片部５０と反対側の端部に設けられている。
　本実施の形態では、突出片部５２は車両１０の後方で斜め上方に突出している。
　したがって、突出片部５２は、上部に位置する上縁５２０２と、上縁５２０２の車両前後方向の端部に接続されて延在する前縁５２０４と後縁５２０６と、を備えている。
　突出片部５２の上縁５２０２、前縁５２０４、後縁５２０６は、サイドフレーム１２の内側の側面１２０２にアーク溶接されている。
　なお、一対の側板部４２の後縁上部４２０６Ａは、アーク溶接によりサイドフレーム１２の両側面１２０２、１２０４に溶接されている。したがって、サイドフレーム１２の内側の側面１２０２では、突出片部５２の後縁５２０６と側板部４２の後縁上部４２０６Ａとのサイドフレーム１２へのアーク溶接は連続している。
　すなわち、延長幅板部４８の前縁４８０２、延長側板部４４の前縁４４０４、脚片部５０の前縁５００４、上縁５００２、後縁５００６、延長側板部４４の上縁４４０２、側板部４２の上縁４２０２、突出片部５２の前縁５２０４、上縁５２０２、後縁５２０６、側板部４２の後縁上部４２０６Ａのサイドフレーム１２へのアーク溶接は連続している。 As shown in FIG. 5 , the protruding piece 52 is provided so as to protrude upward from the vehicle rear portion of the side plate portion 42 on the side where the leg piece 50 is provided.
In other words, the projecting piece portion 52 is provided at the end of the side plate portion 42 on the side where the leg piece portion 50 is provided, which is opposite to the leg piece portion 50 in the vehicle front-rear direction.
In the present embodiment, projecting piece 52 projects obliquely upward behind vehicle 10 .
Therefore, the projecting piece portion 52 includes an upper edge 5202 located at the upper portion, and a front edge 5204 and a rear edge 5206 that are connected to and extend from the ends of the upper edge 5202 in the vehicle front-rear direction.
An upper edge 5202 , a front edge 5204 and a rear edge 5206 of the projecting piece 52 are arc-welded to the inner side surface 1202 of the side frame 12 .
The rear edge upper portions 4206A of the pair of side plate portions 42 are welded to both side surfaces 1202 and 1204 of the side frame 12 by arc welding. Therefore, on the inner side surface 1202 of the side frame 12, the arc welding of the rear edge 5206 of the projecting piece 52 and the upper rear edge 4206A of the side plate 42 to the side frame 12 is continuous.
That is, the front edge 4802 of the extended width plate portion 48, the front edge 4404 of the extended side plate portion 44, the front edge 5004, the upper edge 5002, and the rear edge 5006 of the leg portion 50, the upper edge 4402 of the extended side plate portion 44, and the side plate portion 42 The arc welding of the upper edge 4202, the front edge 5204, the upper edge 5202, the rear edge 5206 of the projecting piece 52, and the rear edge upper portion 4206A of the side plate portion 42 to the side frame 12 is continuous.
　図６に示すように、連結板５４は、車幅方向に延在し一対の側板部４２の上部の車両後方に位置する端部間に溶接により接合され、それら端部間を連結している。
　連結板５４の上縁５４０２はサイドフレーム１２の底面１２０６にアーク溶接されている。 As shown in FIG. 6, the connecting plate 54 extends in the vehicle width direction and is joined by welding between the upper end portions of the pair of side plate portions 42 located at the rear of the vehicle, thereby connecting the end portions. .
The upper edge 5402 of the connecting plate 54 is arc-welded to the bottom surface 1206 of the side frame 12 .
　次に作用効果について説明する。
　悪路走行時、リアアクスルハウジング１８からリーフスプリング２２の中間部に上下方向の荷重が入力すると、リーフスプリング２２の前端の目玉部２２Ａおよび後端の目玉部２２Ｂがシャックルピン２８およびシャックルリンク３０で支持されているため、リーフスプリング２２は中間部が上方あるいは下方にたわむように弾性変形する。
　この弾性変形により、リーフスプリング２２の前端においては、前端の目玉部２２Ａからシャックルピン２８を介して支持ブラケット４０に荷重が入力し、支持ブラケット４０を介してサイドフレーム１２に荷重が伝達される。
　また、リーフスプリング２２の後端においては、後端の目玉部２２Ｂからシャックルリンク３０を介してサイドフレーム１２に荷重が伝達される。 Next, functions and effects will be described.
When a vertical load is applied to the intermediate portion of the leaf spring 22 from the rear axle housing 18 while traveling on rough roads, the eyeball 22A at the front end and the eyeball 22B at the rear end of the leaf spring 22 are moved by the shackle pin 28 and the shackle link 30. Since it is supported, the leaf spring 22 is elastically deformed such that the intermediate portion is bent upward or downward.
Due to this elastic deformation, at the front end of the leaf spring 22 , a load is input from the eyeball 22 A at the front end to the support bracket 40 via the shackle pin 28 , and the load is transmitted to the side frame 12 via the support bracket 40 .
At the rear end of the leaf spring 22, the load is transmitted to the side frame 12 via the shackle link 30 from the eyeball portion 22B at the rear end.
　ここで、支持ブラケット４０の後部は、連結板５４で簡易的に接合されていることから比較的剛性が低いのに対して、支持ブラケット４０の前部は幅板部４６が設けられていることから支持ブラケット４０の後部に比較して剛性が非常に高く、走行時におけるサイドフレーム１２の変形に対して追従しにくい構造となっている。
　さらに、本実施の形態では、支持ブラケット４０でリーフスプリング２２の前端を軸支しているため、支持ブラケット４０の前端部には応力が集中しやすく、支持ブラケット４０の前端部と重なるサイドフレーム１２の箇所には、割れ等の損傷が生じ易くなる。 Here, the rear portion of the support bracket 40 has relatively low rigidity because it is simply joined by the connecting plate 54 , whereas the front portion of the support bracket 40 is provided with the width plate portion 46 . The rigidity of the rear part of the support bracket 40 is significantly higher than that of the rear part of the support bracket 40, and the structure is such that it is difficult to follow the deformation of the side frame 12 during running.
Furthermore, in the present embodiment, since the support bracket 40 pivotally supports the front end of the leaf spring 22 , stress tends to concentrate on the front end of the support bracket 40 , and the side frame 12 overlaps the front end of the support bracket 40 . Damage such as cracks is likely to occur at the location of .
　そこで、本実施の形態では、支持ブラケット４０の一対の側板部４２のうちの少なくとも一方に、側板接合部４３の車両前後方向一方側の端部からサイドフレーム１２の側面１２０２に沿って上方に延在し、該サイドフレーム１２に接合される長尺状の脚片部５０を設けた。
　そのため、応力集中が生じやすい支持ブラケット４０の端部において、端部から応力を受けるサイドフレーム１２の部分の面積を脚片部５０によって増やすことができるため、応力集中を緩和できサイドフレーム１２の損傷を防止する上で有利となる。 Therefore, in the present embodiment, at least one of the pair of side plate portions 42 of the support bracket 40 is provided with an end portion of the side plate joint portion 43 extending upward along the side surface 1202 of the side frame 12 from one end of the side plate joint portion 43 in the vehicle front-rear direction. An elongated leg piece 50 that is present and joined to the side frame 12 is provided.
Therefore, at the end of the support bracket 40 where stress concentration is likely to occur, the area of the portion of the side frame 12 that receives stress from the end can be increased by the leg piece 50, so stress concentration can be alleviated and damage to the side frame 12 can be prevented. It is advantageous in preventing
　また、脚片部５０を真上に突出させてもよいが、本実施の形態のように、脚片部５０を、車両前後方向一方側に向かって斜め上方に延在させると、脚片部５０を真上に突出させる場合に比べ、悪路走行時に大きく作用する上下方向の荷重を脚片部５０の前縁５００４、上縁５００２、後縁５００６を介して車幅方向内側のサイドフレーム１２の側面１２０２に広く分散する上で有利となる。
　したがって、応力集中を緩和できサイドフレーム１２の損傷を防止する上でより有利となる。 Further, the leg piece 50 may be projected directly upward. Compared to the case where the legs 50 project straight up, the vertical load that acts greatly when traveling on rough roads is transferred to the side frames 12 on the inner side in the vehicle width direction via the front edges 5004, upper edges 5002, and rear edges 5006 of the leg pieces 50. It is advantageous to spread widely on the side 1202 of the .
Therefore, stress concentration can be relieved, which is more advantageous in preventing damage to the side frame 12 .
　また、本実施の形態では、脚片部５０は、先端に向かうにつれて先細りとなっているため、悪路走行時において支持ブラケット４０が衝撃的な荷重を受けた際、支持ブラケット４０がサイドフレーム１２に対してより追従するため、応力集中を緩和でき、サイドフレーム１２の損傷を防止する上でより有利となる。 In addition, in the present embodiment, the leg piece portion 50 is tapered toward the tip, so that when the support bracket 40 receives an impact load while traveling on a rough road, the support bracket 40 does not move toward the side frame 12 . , stress concentration can be alleviated, which is more advantageous in preventing damage to the side frame 12 .
　また、本実施の形態では、脚片部５０は、側板接合部４３と板接合部４７とによって形成される稜線から上方に延びているので、サイドフレーム１２の底面１２０６に接合された板接合部４７によって、より剛性の高くなった稜線周辺部への応力集中を緩和でき、サイドフレーム１２の損傷を防止する上でより有利となる。 Further, in the present embodiment, since the leg piece portion 50 extends upward from the ridgeline formed by the side plate joint portion 43 and the plate joint portion 47, the plate joint portion joined to the bottom surface 1206 of the side frame 12 47 can alleviate the stress concentration on the ridge peripheral portion where the rigidity is increased, which is more advantageous in preventing damage to the side frame 12 .
　また、本実施の形態では、延長側板部４４および延長幅板部４８の車両前後方向の端部がサイドフレーム１２の側面１２０２および底面１２０６に沿って接合されている。
　したがって、悪路走行時において支持ブラケット４０が衝撃的な荷重を受けた際、延長側板部４４および延長幅板部４８によって、支持ブラケット４０をサイドフレーム１２に対してより追従させることができる。これにより、サイドフレーム１２への応力集中を緩和でき、サイドフレーム１２の損傷を防止する上でより有利となる。 In the present embodiment, the ends of the extended side plate portion 44 and the extended width plate portion 48 in the vehicle front-rear direction are joined along the side surface 1202 and the bottom surface 1206 of the side frame 12 .
Therefore, when the support bracket 40 receives an impact load while traveling on a rough road, the extended side plate portion 44 and the extended width plate portion 48 allow the support bracket 40 to follow the side frame 12 more. As a result, stress concentration on the side frames 12 can be alleviated, which is more advantageous in preventing damage to the side frames 12 .
　また、本実施の形態では、リーフスプリング２２（サスペンション部材）がサイドフレーム１２の車幅方向中央に対して車幅方向の一方側（車幅方向外側）にオフセットした状態で配置されているため、悪路走行時において、より遠い位置に配置されている車幅方向の他方側の側板部４２に大きな負荷が生じる。
　本実施の形態では、脚片部５０は、車両幅方向他方側（車幅方向内側）の側板部４２に設けられているので、このような負荷に伴うサイドフレーム１２への応力集中を緩和でき、サイドフレーム１２の損傷を防止する上でより有利となる。
　また、本実施の形態では、脚片部５０が設けられた側の側板部４２の車両前後方向において脚片部５０と反対側の端部にサイドフレーム１２に接合される突出片部５２が設けられている。
　したがって、支持ブラケット４０から応力を受けるサイドフレーム１２の部分の面積を突出片部５２によってさらに増やすことができるため、上記負荷に伴うサイドフレーム１２への応力集中をより緩和でき、サイドフレーム１２の損傷を防止する上でより一層有利となる。 In addition, in the present embodiment, the leaf springs 22 (suspension members) are arranged in a state of being offset to one side in the vehicle width direction (outer side in the vehicle width direction) with respect to the center of the side frame 12 in the vehicle width direction. When the vehicle travels on a rough road, a large load is applied to the side plate portion 42 on the other side in the vehicle width direction, which is arranged at a farther position.
In the present embodiment, since the leg piece portion 50 is provided on the side plate portion 42 on the other side in the vehicle width direction (inside in the vehicle width direction), stress concentration on the side frame 12 caused by such a load can be alleviated. , is more advantageous in preventing damage to the side frame 12 .
Further, in the present embodiment, the projecting piece portion 52 joined to the side frame 12 is provided at the end of the side plate portion 42 on the side where the leg piece portion 50 is provided, which is opposite to the leg piece portion 50 in the longitudinal direction of the vehicle. It is
Therefore, since the area of the portion of the side frame 12 that receives stress from the support bracket 40 can be further increased by the protruding piece portion 52, the concentration of stress on the side frame 12 due to the load can be further alleviated, and the side frame 12 can be damaged. It is even more advantageous in preventing
　なお、本実施の形態では、支持ブラケット４０が支持するサスペンション部材がリーフスプリング２２である場合について説明したが、支持ブラケット４０が支持するサスペンション部材は限定されるものではなく、本発明は、従来公知の様々なサスペンション部材を支持する支持ブラケットに適用可能である。 In the present embodiment, the case where the suspension member supported by the support bracket 40 is the leaf spring 22 has been described, but the suspension member supported by the support bracket 40 is not limited. can be applied to support brackets that support various suspension members of
　本出願は、２０２１年３月３１日出願の日本特許出願２０２１－０５９４６５に基づくものであり、その内容はここに参照として取り込まれる。 This application is based on Japanese Patent Application 2021-059465 filed on March 31, 2021, the contents of which are incorporated herein by reference.
１０　車両
１２　サイドフレーム
１２０２、１２０４　側面
１２０６　底面
１８　リアアクスルハウジング
１８０２　筒部
２０　リアサスペンション構造
２２　リーフスプリング（サスペンション部材）
２２Ａ、２２Ｂ　目玉部
２４　ショックアブソーバ
２６　バンプラバー
２８　シャックルピン
２８Ａ　ボルト
３０　シャックルリンク
３８　バンプブラケット
４０　支持ブラケット
４００２　シャックルピン挿通孔
４００４　周縁部
４２　一対の側板部
４２０２　上縁
４２０４　前縁
４２０６　後縁
４２０６Ａ　後縁上部
４３　側板接合部
４４　一対の延長側板部
４４０２　上縁
４４０４　前縁
４６　幅板部
４７　板接合部
４８　延長幅板部
４８０２　前縁
５０　脚片部
５００２　上縁
５００４　前縁
５００６　後縁
５２　突出片部
５２０２　上縁
５２０４　前縁
５２０６　後縁
５４　連結板
５４０２　上縁 REFERENCE SIGNS LIST 10 vehicle 12 side frames 1202, 1204 side surface 1206 bottom surface 18 rear axle housing 1802 cylindrical portion 20 rear suspension structure 22 leaf spring (suspension member)
22A, 22B eyeball 24 shock absorber 26 bump rubber 28 shackle pin 28A bolt 30 shackle link 38 bump bracket 40 support bracket 4002 shackle pin insertion hole 4004 peripheral edge 42 pair of side plate portions 4202 upper edge 4204 front edge 4206 rear edge 4206A rear edge Upper part 43 Side plate joint part 44 Pair of extended side plate parts 4402 Upper edge 4404 Front edge 46 Width plate part 47 Plate joint part 48 Extension width plate part 4802 Front edge 50 Leg piece part 5002 Upper edge 5004 Front edge 5006 Rear edge 52 Protruding piece part 5202 upper edge 5204 front edge 5206 rear edge 54 connecting plate 5402 upper edge

Claims (6)

  1. 　車両のサイドフレームに接合されサスペンション部材を支持する支持ブラケットであって、
    　前記サスペンション部材を軸支する一対の側板部と、
    　前記一対の側板部の車両前後方向一方側の端部間に亘って設けられ、前記支持ブラケットの車両前後方向一方側を塞ぐ幅板部と、
    　を備え、
    　前記一対の側板部の上端部には、前記サイドフレームの両側面に沿って車両前後方向に延在し、該サイドフレームに接合される側板接合部がそれぞれ設けられ、
    　前記一対の側板部のうちの少なくとも一方は、前記側板接合部の車両前後方向一方側の端部から前記サイドフレームの側面に沿って上方に延在し、該サイドフレームに接合される長尺状の脚片部を有している、
    　ことを特徴とする支持ブラケット。     A support bracket that is joined to a side frame of a vehicle and supports a suspension member,
    a pair of side plate portions that pivotally support the suspension member;
    a width plate portion provided between ends of the pair of side plate portions on one side in the vehicle front-rear direction and blocking one side of the support bracket in the vehicle front-rear direction;
    with
    Side plate joint portions that extend in the vehicle front-rear direction along both side surfaces of the side frames and are joined to the side frames are provided at the upper end portions of the pair of side plate portions, respectively;
    At least one of the pair of side plate portions extends upward along the side surface of the side frame from one end of the side plate joint portion in the vehicle front-rear direction, and has an elongated shape joined to the side frame. having a leg piece of
    A support bracket, characterized in that:
  2. 　前記脚片部は、車両前後方向一方側に向かって斜め上方に延在している、
    　ことを特徴とする請求項１に記載の支持ブラケット。     The leg piece extends obliquely upward toward one side in the vehicle front-rear direction,
    2. The support bracket of claim 1, wherein:
  3. 　前記脚片部は、先端に向かうにつれて先細りとなっている、
    　ことを特徴とする請求項１または２に記載の支持ブラケット。     The leg piece is tapered toward the tip,
    3. The support bracket according to claim 1 or 2, characterized in that:
  4. 　前記幅板部の車両前後方向一方側の端部には、前記サイドフレームの底面に沿って車幅方向に延在し、該サイドフレームに接合される板接合部が設けられ、
    　前記脚片部は、前記側板接合部と前記板接合部とによって形成される稜線から上方に延びている、
    　ことを特徴とする請求項１～３の何れか１項に記載の支持ブラケット。     A plate joint portion that extends in the vehicle width direction along the bottom surface of the side frame and is joined to the side frame is provided at one end portion of the width plate portion on one side in the vehicle front-rear direction,
    The leg piece portion extends upward from a ridgeline formed by the side plate joint portion and the plate joint portion,
    The support bracket according to any one of claims 1 to 3, characterized in that:
  5. 　前記一対の側板部は、前記側板接合部が車両前後方向一方側に延長された延長側板部を有し、
    　前記幅板部は、上端部側が前記延長側板部に合わせて車両前後方向一方側に前記サイドフレームの底面に沿って延長され、一対の前記側板部の前記延長側板部を接続する延長幅板部を有し、
    　前記延長側板部および前記延長幅板部の車両前後方向の端部が前記サイドフレームの側面および底面に沿って接合されている、
    　ことを特徴とする請求項１～４の何れか１項に記載の支持ブラケット。     The pair of side plate portions has extended side plate portions in which the side plate joint portions are extended to one side in the vehicle front-rear direction,
    The width plate portion has an upper end portion that is aligned with the extension side plate portion and extends along the bottom surface of the side frame to one side in the vehicle front-rear direction to connect the extension side plate portions of the pair of side plate portions. has
    Vehicle front-rear direction ends of the extended side plate portion and the extended width plate portion are joined along side surfaces and bottom surfaces of the side frames,
    The support bracket according to any one of claims 1 to 4, characterized in that:
  6. 　前記サスペンション部材が前記サイドフレームの車幅方向中央に対して車幅方向の一方側にオフセットした状態で配置され、
    　前記脚片部は、車両幅方向他方側の前記側板部に設けられている、
    　ことを特徴とする請求項１～５の何れか１項に記載の支持ブラケット。     The suspension member is arranged in a state of being offset to one side in the vehicle width direction with respect to the center of the side frame in the vehicle width direction,
    The leg piece portion is provided on the side plate portion on the other side in the vehicle width direction,
    The support bracket according to any one of claims 1 to 5, characterized in that:
PCT/JP2022/009877 2021-03-31 2022-03-08 Support bracket WO2022209617A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-059465 2021-03-31
JP2021059465A JP2024075808A (en) 2021-03-31 2021-03-31 Support bracket

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Publication Number Publication Date
WO2022209617A1 true WO2022209617A1 (en) 2022-10-06

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Application Number Title Priority Date Filing Date
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WO (1) WO2022209617A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5534960U (en) * 1978-08-30 1980-03-06
JP2000313361A (en) * 1999-04-28 2000-11-14 Toyota Auto Body Co Ltd Support structure of vehicle suspension bracket
JP2020131731A (en) * 2019-02-13 2020-08-31 トヨタ自動車株式会社 Vehicle rear part structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5534960U (en) * 1978-08-30 1980-03-06
JP2000313361A (en) * 1999-04-28 2000-11-14 Toyota Auto Body Co Ltd Support structure of vehicle suspension bracket
JP2020131731A (en) * 2019-02-13 2020-08-31 トヨタ自動車株式会社 Vehicle rear part structure

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