WO2018066608A1 - Trunnion bracket and trunnion-type suspension - Google Patents

Trunnion bracket and trunnion-type suspension Download PDF

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Publication number
WO2018066608A1
WO2018066608A1 PCT/JP2017/036156 JP2017036156W WO2018066608A1 WO 2018066608 A1 WO2018066608 A1 WO 2018066608A1 JP 2017036156 W JP2017036156 W JP 2017036156W WO 2018066608 A1 WO2018066608 A1 WO 2018066608A1
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WO
WIPO (PCT)
Prior art keywords
trunnion
width direction
vehicle width
vehicle
connecting portion
Prior art date
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PCT/JP2017/036156
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French (fr)
Japanese (ja)
Inventor
裕樹 谷川
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いすゞ自動車株式会社
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Publication date
Application filed by いすゞ自動車株式会社 filed Critical いすゞ自動車株式会社
Priority to CN201780057966.0A priority Critical patent/CN109715419B/en
Publication of WO2018066608A1 publication Critical patent/WO2018066608A1/en
Priority to PH12019500707A priority patent/PH12019500707A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/02—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only
    • B60G11/04—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only arranged substantially parallel to the longitudinal axis of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/02—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only
    • B60G11/10—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G5/00—Resilient suspensions for a set of tandem wheels or axles having interrelated movements
    • B60G5/04—Resilient suspensions for a set of tandem wheels or axles having interrelated movements with two or more pivoted arms, the movements of which are resiliently interrelated, e.g. the arms being rigid
    • B60G5/053—Resilient suspensions for a set of tandem wheels or axles having interrelated movements with two or more pivoted arms, the movements of which are resiliently interrelated, e.g. the arms being rigid a leafspring being used as equilibration unit between two axle-supporting units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • 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
    • B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions

Definitions

  • This disclosure relates to a trunnion bracket and a trunnion suspension.
  • a trunnion shaft is fixed to a frame by a trunnion bracket between a pair of axles arranged at the front and rear of the vehicle, and a central portion of a leaf spring is rotatable on the trunnion shaft.
  • an upper rod and a lower rod for supporting the pair of axles by both ends of the leaf spring and holding the position of the pair of axles in the longitudinal direction of the vehicle.
  • an inner connecting portion connected to the end of the lower rod from the inside in the vehicle width direction and an outer connecting portion connected to the end of the lower rod from the outside in the vehicle width direction are provided.
  • An object of the present disclosure is to provide a trunnion bracket and a trunnion suspension capable of easily ensuring a clearance with a wheel.
  • the trunnion bracket of the present disclosure is In the trunnion bracket fixed to the web surface facing the outer side in the vehicle width direction in the pair of frames arranged on both sides in the vehicle width direction and connected to the pair of axles arranged in the front and rear of the vehicle via a rod member, An outer connecting portion connected to the rod member from the outside in the vehicle width direction; An inner coupling portion coupled to the rod member from the inner side in the vehicle width direction; With The inner connecting portion is provided on the inner side in the vehicle width direction from the web surface.
  • the trunnion suspension of the present disclosure is
  • the trunnion shaft is fixed to the web surface facing the outside in the vehicle width direction of the frame by a trunnion bracket between a pair of axles arranged at the front and rear of the vehicle, and the central portion of the leaf spring can be freely rotated on the trunnion shaft.
  • the trunnion type suspension that attaches and supports the pair of axles by both end portions of the leaf spring, and connects the pair of axles to the trunnion bracket via a rod member.
  • the trunnion bracket is An outer connecting portion connected to the rod member from the outside in the vehicle width direction; An inner coupling portion coupled to the rod member from the inner side in the vehicle width direction; With The inner connecting portion is provided on the inner side in the vehicle width direction from the web surface.
  • the clearance with the wheel can be easily secured.
  • FIG. 1 is a diagram schematically illustrating an example of a trunnion suspension according to an embodiment of the present disclosure.
  • FIG. 2 is a view taken in the direction of arrow II in FIG.
  • FIG. 3 is a front view of the trunnion bracket.
  • FIG. 4 is a bottom view of the trunnion bracket.
  • the vehicle width direction is X
  • the vehicle width direction outside is X1
  • the vehicle width direction inside is X2
  • the vehicle longitudinal direction is Y
  • the front side is Y1
  • the rear side is Y2.
  • FIG. 1 is a schematic view of a trunnion suspension 300 mounted on a rear biaxial vehicle of a vehicle 100 such as a large truck in which the present disclosure is implemented as viewed from the outside X1 in the vehicle width direction X, and FIG. 2 is an arrow II in FIG. A view is shown.
  • the rear two-axle vehicle includes a front axle 20F, a rear axle 20R, a front wheel 21F attached to both ends of the front axle 20F, and a rear side attached to both ends of the rear axle 20R. Wheels 21R are provided.
  • the wheels 21F and 21R in FIG. 1 employ double tires (see FIG. 2) in which two tires are mounted at one location, but are single tires in which one tire is mounted in one location. May be.
  • the chassis frame 1 of the vehicle 100 shown in FIG. 2 extends in the vehicle front-rear direction Y and has a pair of left and right side frames 11, 12 spaced in the vehicle width direction X, and the vehicle width between the side frames 11, 12. Extending in the direction X, both ends are fixed to the side frames 11 and 12, and a plurality of cross members 13 arranged at intervals in the vehicle longitudinal direction Y are formed in a ladder shape.
  • FIG. 2 shows one of the plurality of cross members 13.
  • the side frames 11 and 12 correspond to the “frame” of the present disclosure.
  • the axles 20F and 20R support the chassis frame 1 via the trunnion suspension 300.
  • the trunnion suspension 300 is connected to a trunnion bracket 3 attached to the rear portion of the chassis frame 1 extending in the vehicle longitudinal direction Y, a leaf spring 4, and a front end to a lower end of the front axle 20F.
  • the front lower rod 5F (corresponding to the “rod member” of the present disclosure) whose rear end is connected to the lower end 3a of the trunnion bracket 3, the front end is connected to the lower end 3a of the trunnion bracket 3, and the rear end is the rear axle
  • the rear lower rod 5R (corresponding to the “rod member” of the present disclosure) connected to the lower end of 20R, the front end connected to the upper end of the front axle 20F, and the rear end connected to the cross member 13 of the chassis frame 1
  • the front upper V rod 6F, the front end is connected to the cross member 13, and the rear upper V rod 6 is connected to the upper end of the rear axle 20R. And, it is provided with a trunnion shaft 7, a saddle 8, the.
  • the leaf spring 4 is rotatably held by the saddle 8 as shown in FIG.
  • An intermediate portion of the leaf spring 4 in the vehicle front-rear direction Y is fastened by a U bolt 94 and a nut 96 via a spring pad 92.
  • the front end of the leaf spring 4 is connected to the front axle 20F so as to be slidable in the vehicle longitudinal direction Y.
  • the rear end portion of the leaf spring 4 is connected to the rear axle 20R so as to be slidable in the vehicle longitudinal direction Y.
  • the lower rods 5F and 5R and the upper V rods 6F and 6R maintain the relative positions of the front axle 20F and the rear axle 20R with respect to the chassis frame 1, as shown in FIG. Further, the lower rods 5F and 5R and the upper V rods 6F and 6R transmit the driving force from the wheels 21F and 21R to the chassis frame 1.
  • the upper V rod 6F (6R) is formed in a V shape when viewed from above, although not shown.
  • the V-shaped opening end side is pivotally attached to the cross member 13, and the V-shaped top portion is pivotally attached to the upper portion of the axle 20F (20R).
  • the triangular structure formed by the upper V rod 6F (6R) and the cross member 13 maintains the relative positional relationship in the vehicle width direction X with respect to the chassis frame 1.
  • the trunnion shaft 7 is fitted to a fitting portion 33 (described later) of the trunnion bracket 3 with the axial direction as the vehicle width direction X as shown in FIG.
  • the saddle 8 is divided into an upper upper saddle 81 and a lower lower saddle 82 along the axis of the trunnion shaft 7.
  • a leaf spring 4 is placed on the upper saddle 81.
  • the leaf spring 4, the upper saddle 81, the lower saddle 82 and the spring pad 92 are fastened together with a U bolt 94 and a nut 96.
  • each trunnion bracket 3 fixed to the pair of left and right side frames 11 and 12 will be described with reference to FIG. 1, FIG. 2, and FIG. Since each trunnion bracket 3 has the same configuration, only one trunnion bracket 3 fixed to the side frame 11 will be described, and description of the other trunnion bracket 3 will be omitted.
  • FIG. 3 is a front view of the trunnion bracket 3.
  • the trunnion bracket 3 has an outer shape such that the width in the vehicle front-rear direction Y gradually becomes narrower from the upper end 3b side toward the lower end 3a side.
  • the trunnion bracket 3 includes a pair of first stay portions 31, a second stay portion 32, a fitting portion 33, connecting portions 35F and 35R, and a jack-up surface portion 38 (see FIG. 2). 4), and these are integrally formed.
  • the pair of first stay portions 31 are provided on the upper end portion 3b of the trunnion bracket 3 with a certain interval in the vehicle longitudinal direction Y. As shown in FIG. 2, the first stay portion 31 is attached to the web surface 11 a of the side frame 11 with bolts and nuts.
  • the second stay portion 32 is provided at the upper end portion 3b of the trunnion bracket 3, and is attached to the lower surface 13a of the cross member 13 with bolts and nuts as shown in FIG.
  • the fitting part 33 is provided in the intermediate part 3 c of the trunnion bracket 3. As shown in FIG. 2, the trunnion shaft 7 is fitted into the fitting portion 33.
  • the connecting portion 35F is provided at the lower end portion 3a of the trunnion bracket 3, and is connected to the rear end portion 52F of the front lower rod 5F as shown in FIG.
  • the connecting portion 35R is provided at the lower end portion 3a of the trunnion bracket 3, and is connected to the front end portion 52R of the rear lower rod 5R as shown in FIG.
  • the width Ya at the position directly above the position is narrower than the width Yb in the vehicle longitudinal direction Y at the position where the coupling portions 35F and 35R are provided. Yes.
  • connection structure (rear connection structure) between the front end portion 52R of the rear lower rod 5R and the connection portion 35R will be described with reference to FIGS. 1 and 2.
  • the connection structure (front connection structure) between the rear end portion 52F of the front lower rod 5F and the connection portion 35F is basically the same as the connection structure on the rear side, and therefore the description thereof will be omitted. Instead of description of structure.
  • a recess 34 is provided at the lower end 3 a of the trunnion bracket 3.
  • the recess 34 has both groove side walls and a groove bottom wall 35C facing each other in the vehicle width direction X, and a part of the front end 52R of the rear lower rod 5R is fitted therein.
  • the groove bottom wall 35C is a wall that partitions the recesses 34, 34 in the front and rear connection structures.
  • the connecting portion 35R is provided on the groove side wall of the recess 34 on the outer side X1 in the vehicle width direction X, and is connected to the front end portion 52R of the rear lower rod 5R from the outer side X1 in the vehicle width direction X.
  • 35 A of connecting parts and the inner side connection part 35B provided in the groove side wall of the inner side X2 of the recessed part 34 at the vehicle width direction X are connected with the front-end part 52R of the rear side lower rod 5R from the inner side X2 of the vehicle width direction X. Yes.
  • a bearing member 36A is provided on the outer connecting portion 35A.
  • a bearing member 36B is provided in the inner coupling portion 35B.
  • a shaft member 37 having an axial direction as the vehicle width direction X is installed.
  • the shaft member 37 passes through a fitting hole 52H provided in the front end portion 52R of the rear lower rod 5R. Accordingly, the front end portion 52R of the rear lower rod 5R is rotatably supported by the shaft member 37.
  • the inner connecting portion 35B is provided on the inner side X2 in the vehicle width direction X from the web surface 11a.
  • FIG. 2 shows the inner connecting portion 35B provided on the inner side X2 from the position WS in the vehicle width direction X of the web surface 11a.
  • the clearance S between the outer connecting portion 35A and the wheels 21F and 21R is increased by the amount of the inner connecting portion 35B provided on the inner side X2.
  • the center position CP in the vehicle width direction X between the outer connecting portion 35A and the inner connecting portion 35B is located below the web surface 11a as shown in FIG.
  • the front end 52R of the rear lower rod 5R is rotatably supported by the shaft member 37 in the rear connection structure.
  • the rear end portion 52F of the front lower rod 5F is rotatably supported by the connection portion 35F by the shaft member 37.
  • the bearing members 36A and 36A in the front and rear connection structures are fastened to the outer connection portions 35A and 35A by bolts 97 and nuts 98 as shown in FIGS.
  • the bearing members 36B and 36B in the front and rear connection structures are fastened to the inner connection portions 35B and 35B by bolts (not shown) and nuts (not shown).
  • FIG. 4 is a bottom view of the trunnion bracket 3.
  • the jack-up surface portion 38 is provided at the lower end portion 3a of the trunnion bracket 3 as shown in FIG.
  • the jack-up surface portion 38 is also referred to as a jack-up point.
  • the jack-up surface portion 38 is formed at a portion where the rear end portion of the inner connection portion 35B in the front connection structure, the front end portion of the inner connection portion 35B in the rear connection structure, and the inner end portion C of the groove bottom portion 35C intersect. Is provided.
  • the jack-up surface portion 38 is located on the inner side X2 in the vehicle width direction X from the web surface 11a.
  • FIG. 4 shows the jack-up surface portion 38 located on the inner side X2 from the position WS in the vehicle width direction X of the web surface 11a.
  • the jack-up surface portion 38 has a plane having a size corresponding to the shape of the cargo receiving portion (receiver) 50 of the vehicle jack.
  • a step portion 39A extending in the vehicle width direction X is provided on the front side Y1 in the vehicle longitudinal direction Y with respect to the jack-up surface portion 38.
  • a stepped portion 39 ⁇ / b> B extending in the vehicle width direction X is provided on the rear side Y ⁇ b> 2 of the vehicle front-rear direction Y with respect to the jack-up surface portion 38 on the lower surface of the inner connecting portion 35 ⁇ / b> B.
  • a step portion 39C extending in the vehicle longitudinal direction Y is provided on the outer side X1 in the vehicle width direction X with respect to the jackup surface portion 38.
  • the jack-up surface portion 38 is a bottom surface of a step groove that is a predetermined amount deeper than the lower surfaces of the inner coupling portion 35B and the groove bottom portion 35C (high in the attached state of the trunnion bracket 3) by the step portions 39A, 39B, and 39C.
  • the outer connecting portion 35A is placed on the inner side X2 in the vehicle width direction X by the amount of the inner connecting portion 35B of the trunnion bracket according to the present embodiment provided on the inner side X2 in the vehicle width direction X from the web surface 11a. Can be provided. Thereby, the clearance between the outer connecting portion 35A and the wheels 21F and 21R can be easily secured.
  • the center position in the vehicle width direction X between the outer connecting portion 35A and the inner connecting portion 35B is positioned below the web surface 11a.
  • the load in the vertical direction input from the lower rods 5F and 5R to the connecting portions 35F and 35R mainly becomes a shearing force, and a plurality (12 in the drawing) fasten the web surface 11a and the first stay portion 31. ).
  • the part of the trunnion bracket 3 is equivalent to that amount. The rigidity can be lowered.
  • the width Ya at the position directly above the position can be made narrower than the width Yb in the vehicle longitudinal direction Y at the position where the connecting portions 35F and 35R are provided. Further, the number of ribs for increasing the rigidity provided from the intermediate portion 3c to the lower end portion 3a can be reduced. Thereby, the trunnion bracket 3 can be reduced in weight.
  • the load applied during jack-up can be transmitted to the lower surface of the chassis side frame 1 and dispersed.
  • the load resistance can be increased.
  • more wheels can be floated with the same jack-up amount as much as the jack-up surface portion 38 is provided on the inner side X2 in the vehicle width direction X from the web surface 11a.
  • step portions 39A, 39B, and 39C are provided at positions on the front and rear sides in the vehicle front-rear direction and the vehicle width direction with respect to the jack-up surface portion 38, and the jack-up surface portion 38 is provided in three directions with the step portions 39A, 39B, and 39C.
  • the trunnion bracket of the present disclosure is useful as a suspension device for a rear two-wheeled vehicle that is required to easily secure a clearance with wheels.

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

A trunnion bracket which is capable of easily ensuring clearance from a vehicle wheel, is secured to a web surface facing outward in the vehicle widthwise direction and constituting part of a pair of frames positioned on both sides in the vehicle widthwise direction, and is connected by a rod member to a pair of vehicle axles positioned in the front and rear of a vehicle, the trunnion bracket being equipped with an outside connecting part which connects to the rod member from the outside in the vehicle widthwise direction, and an inside connecting part which connects to the rod member from the inside in the vehicle widthwise direction. Furthermore, the inside connecting part is provided to the inside of the web surface in the vehicle widthwise direction.

Description

トラニオンブラケットおよびトラニオン式サスペンションTrunnion bracket and trunnion suspension
　本開示は、トラニオンブラケットおよびトラニオン式サスペンションに関する。 This disclosure relates to a trunnion bracket and a trunnion suspension.
　従来から、大型トラック等の後２軸車にトラニオン式サスペンションが適用されている。 Conventionally, trunnion-type suspensions have been applied to rear 2-axle vehicles such as large trucks.
　例えば、特許文献１に記載されたトラニオン式サスペンションは、車両の前後に配置された一対の車軸の間でトラニオンシャフトをトラニオンブラケットによりフレームに固定し、トラニオンシャフトにリーフスプリングの中央部を回動自在に取り付け、リーフスプリングの両端部により一対の車軸を支持すると共に、一対の車軸の車両前後方向の位置を保持するためのアッパロッド及びロアロッドを備えている。トラニオンブラケットの下端部には、ロアロッドの端部に車幅方向の内側から連結される内側連結部と、ロアロッドの端部に車幅方向の外側から連結される外側連結部とが設けられている。 For example, in the trunnion type suspension described in Patent Document 1, a trunnion shaft is fixed to a frame by a trunnion bracket between a pair of axles arranged at the front and rear of the vehicle, and a central portion of a leaf spring is rotatable on the trunnion shaft. And an upper rod and a lower rod for supporting the pair of axles by both ends of the leaf spring and holding the position of the pair of axles in the longitudinal direction of the vehicle. At the lower end of the trunnion bracket, an inner connecting portion connected to the end of the lower rod from the inside in the vehicle width direction and an outer connecting portion connected to the end of the lower rod from the outside in the vehicle width direction are provided. .
日本国実開平２－２０３号公報Japanese National Utility Model Publication No. 2-203
　しかしながら、上記特許文献１にかかるトラニオン式サスペンションでは、フレームにおけるウエブ面（取付用の側面）の下方位置にトラニオンブラケットの内側連結部が設けられているため、外側連結部がフレームのウエブ面より車幅方向の外側に突出した形になる。フレームのウエブ面より車幅方向の外側には車輪が設けられているため、外側連結部が車幅方向の外側に突出するほど、外側連結部と車輪との間のクリアランスを確保することが困難となる。 However, in the trunnion type suspension according to Patent Document 1, since the inner coupling portion of the trunnion bracket is provided below the web surface (side surface for mounting) in the frame, the outer coupling portion is located closer to the vehicle than the web surface of the frame. The shape protrudes outward in the width direction. Since wheels are provided on the outer side in the vehicle width direction from the web surface of the frame, it is more difficult to secure a clearance between the outer connection portion and the wheels as the outer connection portion protrudes outward in the vehicle width direction. It becomes.
　本開示の目的は、車輪とのクリアランスを容易に確保することが可能なトラニオンブラケット及びトラニオン式サスペンションを提供することである。 An object of the present disclosure is to provide a trunnion bracket and a trunnion suspension capable of easily ensuring a clearance with a wheel.
　本開示のトラニオンブラケットは、
　車幅方向の両側に配置された一対のフレームにおける車幅方向の外側に面するウエブ面に固定され、車両の前後に配置された一対の車軸にロッド部材を介して連結されるトラニオンブラケットにおいて、
　前記ロッド部材に車幅方向の外側から連結される外側連結部と、
　前記ロッド部材に車幅方向の内側から連結される内側連結部と、
　を備え、
　前記内側連結部は、前記ウエブ面より車幅方向の内側に設けられている。 The trunnion bracket of the present disclosure is
In the trunnion bracket fixed to the web surface facing the outer side in the vehicle width direction in the pair of frames arranged on both sides in the vehicle width direction and connected to the pair of axles arranged in the front and rear of the vehicle via a rod member,
An outer connecting portion connected to the rod member from the outside in the vehicle width direction;
An inner coupling portion coupled to the rod member from the inner side in the vehicle width direction;
With
The inner connecting portion is provided on the inner side in the vehicle width direction from the web surface.
　本開示のトラニオン式サスペンションは、
　車両の前後に配置された一対の車軸の間に、トラニオンブラケットによりトラニオンシャフトをフレームにおける車幅方向の外側に面するウエブ面に固定し、前記トラニオンシャフトにリーフスプリングの中央部を回動自在に取り付けると共に、前記リーフスプリングの両端部により前記一対の車軸を支持し、前記トラニオンブラケットにロッド部材を介して前記一対の車軸を連結するトラニオン式サスペンションにおいて、
　前記トラニオンブラケットは、
　前記ロッド部材に車幅方向の外側から連結される外側連結部と、
　前記ロッド部材に車幅方向の内側から連結される内側連結部と、
　を備え、
　前記内側連結部は、前記ウエブ面より車幅方向の内側に設けられている。 The trunnion suspension of the present disclosure is
The trunnion shaft is fixed to the web surface facing the outside in the vehicle width direction of the frame by a trunnion bracket between a pair of axles arranged at the front and rear of the vehicle, and the central portion of the leaf spring can be freely rotated on the trunnion shaft. In the trunnion type suspension that attaches and supports the pair of axles by both end portions of the leaf spring, and connects the pair of axles to the trunnion bracket via a rod member.
The trunnion bracket is
An outer connecting portion connected to the rod member from the outside in the vehicle width direction;
An inner coupling portion coupled to the rod member from the inner side in the vehicle width direction;
With
The inner connecting portion is provided on the inner side in the vehicle width direction from the web surface.
　本開示によれば、車輪とのクリアランスを容易に確保することができる。 According to the present disclosure, the clearance with the wheel can be easily secured.
図１は、本開示の一実施の形態に係るトラニオン式サスペンションの一例を概略的に示す図である。FIG. 1 is a diagram schematically illustrating an example of a trunnion suspension according to an embodiment of the present disclosure. 図２は、図１のＩＩ矢視図である。FIG. 2 is a view taken in the direction of arrow II in FIG. 図３は、トラニオンブラケットの正面図である。FIG. 3 is a front view of the trunnion bracket. 図４は、トラニオンブラケットの底面図である。FIG. 4 is a bottom view of the trunnion bracket.
　以下、本開示に係る実施形態について図面を用いて説明する。各図において、車幅方向をＸ、車幅方向の外側をＸ１、車幅方向の内側をＸ２とし、車両前後方向をＹ、前側をＹ１、後側をＹ２とする。 Hereinafter, embodiments according to the present disclosure will be described with reference to the drawings. In each figure, the vehicle width direction is X, the vehicle width direction outside is X1, the vehicle width direction inside is X2, the vehicle longitudinal direction is Y, the front side is Y1, and the rear side is Y2.
　図１は本開示が実施される大型トラックなどの車両１００の後２軸車に装着されたトラニオン式サスペンション３００を車幅方向Ｘの外側Ｘ１から見た概略図、図２は図１のＩＩ矢視図を示している。 FIG. 1 is a schematic view of a trunnion suspension 300 mounted on a rear biaxial vehicle of a vehicle 100 such as a large truck in which the present disclosure is implemented as viewed from the outside X1 in the vehicle width direction X, and FIG. 2 is an arrow II in FIG. A view is shown.
　後２軸車は、図１に示すように、前側車軸２０Ｆと、後側車軸２０Ｒと、前側車軸２０Ｆの両端に装着された前側車輪２１Ｆと、後側車軸２０Ｒの両端に装着された後側車輪２１Ｒとを備えている。 As shown in FIG. 1, the rear two-axle vehicle includes a front axle 20F, a rear axle 20R, a front wheel 21F attached to both ends of the front axle 20F, and a rear side attached to both ends of the rear axle 20R. Wheels 21R are provided.
　図１の車輪２１Ｆ，２１Ｒには、１か所に２本のタイヤを装着するダブルタイヤ（図２参照）が採用されているが、１か所に１本のタイヤが装着するシングルタイヤであっても良い。 The wheels 21F and 21R in FIG. 1 employ double tires (see FIG. 2) in which two tires are mounted at one location, but are single tires in which one tire is mounted in one location. May be.
　図２に示す車両１００のシャシフレーム１は、車両前後方向Ｙに延在し、かつ車幅方向Ｘに間隔を有した左右一対のサイドフレーム１１，１２と、サイドフレーム１１，１２間に車幅方向Ｘに延在し、両端部をサイドフレーム１１，１２に固着し、車両前後方向Ｙに間隔を有して配置された複数のクロスメンバー１３とで梯子状に形成されている。なお、図２に、複数のクロスメンバー１３の中の一つを示す。サイドフレーム１１，１２が本開示の「フレーム」に対応する。 The chassis frame 1 of the vehicle 100 shown in FIG. 2 extends in the vehicle front-rear direction Y and has a pair of left and right side frames 11, 12 spaced in the vehicle width direction X, and the vehicle width between the side frames 11, 12. Extending in the direction X, both ends are fixed to the side frames 11 and 12, and a plurality of cross members 13 arranged at intervals in the vehicle longitudinal direction Y are formed in a ladder shape. FIG. 2 shows one of the plurality of cross members 13. The side frames 11 and 12 correspond to the “frame” of the present disclosure.
　車軸２０Ｆ，２０Ｒは、トラニオン式サスペンション３００を介してシャシフレーム１を支持している。 The axles 20F and 20R support the chassis frame 1 via the trunnion suspension 300.
　トラニオン式サスペンション３００は、図１に示すように、車両前後方向Ｙに延在したシャシフレーム１の後部に装着されたトラニオンブラケット３と、リーフスプリング４と、前端が前側車軸２０Ｆの下端に連結され、後端がトラニオンブラケット３の下端部３ａに連結された前側ロアロッド５Ｆ（本開示の「ロッド部材」に対応）と、前端がトラニオンブラケット３の下端部３ａに連結され、後端が後側車軸２０Ｒの下端に連結された後側ロアロッド５Ｒ（本開示の「ロッド部材」に対応）と、前端が前側車軸２０Ｆの上端部に連結され、後端がシャシフレーム１のクロスメンバー１３に連結された前側アッパＶロッド６Ｆと、前端がクロスメンバー１３に連結され、後端が後側車軸２０Ｒの上端部に連結された後側アッパＶロッド６Ｒと、トラニオンシャフト７と、サドル８と、を備えている。 As shown in FIG. 1, the trunnion suspension 300 is connected to a trunnion bracket 3 attached to the rear portion of the chassis frame 1 extending in the vehicle longitudinal direction Y, a leaf spring 4, and a front end to a lower end of the front axle 20F. The front lower rod 5F (corresponding to the “rod member” of the present disclosure) whose rear end is connected to the lower end 3a of the trunnion bracket 3, the front end is connected to the lower end 3a of the trunnion bracket 3, and the rear end is the rear axle The rear lower rod 5R (corresponding to the “rod member” of the present disclosure) connected to the lower end of 20R, the front end connected to the upper end of the front axle 20F, and the rear end connected to the cross member 13 of the chassis frame 1 The front upper V rod 6F, the front end is connected to the cross member 13, and the rear upper V rod 6 is connected to the upper end of the rear axle 20R. And, it is provided with a trunnion shaft 7, a saddle 8, the.
　リーフスプリング４は、図１に示すように、サドル８に回動自在に保持される。リーフスプリング４の車両前後方向Ｙの中間部は、スプリングパッド９２を介してＵボルト９４およびナット９６によって締結される。リーフスプリング４の前端部は、前側車軸２０Ｆに車両前後方向Ｙに摺動可能に連結される。リーフスプリング４の後端部は、後側車軸２０Ｒに車両前後方向Ｙに摺動可能に連結される。 The leaf spring 4 is rotatably held by the saddle 8 as shown in FIG. An intermediate portion of the leaf spring 4 in the vehicle front-rear direction Y is fastened by a U bolt 94 and a nut 96 via a spring pad 92. The front end of the leaf spring 4 is connected to the front axle 20F so as to be slidable in the vehicle longitudinal direction Y. The rear end portion of the leaf spring 4 is connected to the rear axle 20R so as to be slidable in the vehicle longitudinal direction Y.
　ロアロッド５Ｆ，５Ｒ及びアッパＶロッド６Ｆ，６Ｒは、図１に示すように、前側車軸２０Ｆ及び後側車軸２０Ｒのシャシフレーム１に対する相対位置を維持する。さらに、ロアロッド５Ｆ，５Ｒ及びアッパＶロッド６Ｆ，６Ｒは、車輪２１Ｆ，２１Ｒからの駆動力をシャシフレーム１に伝える。 The lower rods 5F and 5R and the upper V rods 6F and 6R maintain the relative positions of the front axle 20F and the rear axle 20R with respect to the chassis frame 1, as shown in FIG. Further, the lower rods 5F and 5R and the upper V rods 6F and 6R transmit the driving force from the wheels 21F and 21R to the chassis frame 1.
　アッパＶロッド６Ｆ（６Ｒ）は、図示しないが、上方からの矢視でＶ字状に形成されている。Ｖ字状の開口端側は、クロスメンバー１３に軸着され、Ｖ字状の頂部は、車軸２０Ｆ（２０Ｒ）の上部に軸着されている。アッパＶロッド６Ｆ（６Ｒ）およびクロスメンバー１３により構成された三角形状の構造体は、シャシフレーム１に対する車幅方向Ｘの相対位置関係を維持する。 The upper V rod 6F (6R) is formed in a V shape when viewed from above, although not shown. The V-shaped opening end side is pivotally attached to the cross member 13, and the V-shaped top portion is pivotally attached to the upper portion of the axle 20F (20R). The triangular structure formed by the upper V rod 6F (6R) and the cross member 13 maintains the relative positional relationship in the vehicle width direction X with respect to the chassis frame 1.
　トラニオンシャフト７は、図２に示すように、軸方向を車幅方向Ｘとしてトラニオンブラケット３の嵌合部３３（後述する）に嵌合している。 The trunnion shaft 7 is fitted to a fitting portion 33 (described later) of the trunnion bracket 3 with the axial direction as the vehicle width direction X as shown in FIG.
　サドル８は、図１に示すように、トラニオンシャフト７の軸線に沿って上側のアッパサドル８１と、下側のロアサドル８２とに分割されている。アッパサドル８１にはリーフスプリング４が載置されている。リーフスプリング４、アッパサドル８１、ロアサドル８２及びスプリングパッド９２は、Ｕボルト９４およびナット９６で共締めされている。 As shown in FIG. 1, the saddle 8 is divided into an upper upper saddle 81 and a lower lower saddle 82 along the axis of the trunnion shaft 7. A leaf spring 4 is placed on the upper saddle 81. The leaf spring 4, the upper saddle 81, the lower saddle 82 and the spring pad 92 are fastened together with a U bolt 94 and a nut 96.
　次に、左右一対のサイドフレーム１１，１２にそれぞれ固定されたトラニオンブラケット３について図１、図２および図３を参照して説明する。なお、各トラニオンブラケット３は同じ構成を有しているため、サイドフレーム１１に固定された一方のトラニオンブラケット３について説明し、他方のトラニオンブラケット３の説明を省略する。 Next, the trunnion bracket 3 fixed to the pair of left and right side frames 11 and 12 will be described with reference to FIG. 1, FIG. 2, and FIG. Since each trunnion bracket 3 has the same configuration, only one trunnion bracket 3 fixed to the side frame 11 will be described, and description of the other trunnion bracket 3 will be omitted.
　図３は、トラニオンブラケット３の正面図である。トラニオンブラケット３は、図３に示すように、車両前後方向Ｙの幅が上端部３ｂ側から下端部３ａ側に向かって徐々に狭くなるような外形を有している。 FIG. 3 is a front view of the trunnion bracket 3. As shown in FIG. 3, the trunnion bracket 3 has an outer shape such that the width in the vehicle front-rear direction Y gradually becomes narrower from the upper end 3b side toward the lower end 3a side.
　トラニオンブラケット３は、図２および図３に示すように、一対の第１ステー部３１と、第２ステー部３２と、嵌合部３３と、連結部３５Ｆ，３５Ｒと、ジャッキアップ面部３８（図４参照）とを備え、これらが一体的に形成されている。 As shown in FIGS. 2 and 3, the trunnion bracket 3 includes a pair of first stay portions 31, a second stay portion 32, a fitting portion 33, connecting portions 35F and 35R, and a jack-up surface portion 38 (see FIG. 2). 4), and these are integrally formed.
　一対の第１ステー部３１は、トラニオンブラケット３の上端部３ｂに互いに車両前後方向Ｙで一定の間隔を置いて設けられている。第１ステー部３１は、図２に示すように、サイドフレーム１１のウエブ面１１ａにボルトおよびナットで取付けられている。 The pair of first stay portions 31 are provided on the upper end portion 3b of the trunnion bracket 3 with a certain interval in the vehicle longitudinal direction Y. As shown in FIG. 2, the first stay portion 31 is attached to the web surface 11 a of the side frame 11 with bolts and nuts.
　第２ステー部３２は、トラニオンブラケット３の上端部３ｂに設けられ、図２に示すように、クロスメンバー１３の下面１３ａにボルトおよびナットで取付けられている。 The second stay portion 32 is provided at the upper end portion 3b of the trunnion bracket 3, and is attached to the lower surface 13a of the cross member 13 with bolts and nuts as shown in FIG.
　嵌合部３３は、トラニオンブラケット３の中間部３ｃに設けられている。嵌合部３３には、図２に示すように、トラニオンシャフト７が嵌め込まれている。 The fitting part 33 is provided in the intermediate part 3 c of the trunnion bracket 3. As shown in FIG. 2, the trunnion shaft 7 is fitted into the fitting portion 33.
　連結部３５Ｆは、トラニオンブラケット３の下端部３ａに設けられ、図２に示すように、前側ロアロッド５Ｆの後端部５２Ｆに連結されている。 The connecting portion 35F is provided at the lower end portion 3a of the trunnion bracket 3, and is connected to the rear end portion 52F of the front lower rod 5F as shown in FIG.
　連結部３５Ｒは、トラニオンブラケット３の下端部３ａに設けられ、図２に示すように、後側ロアロッド５Ｒの前端部５２Ｒに連結されている。 The connecting portion 35R is provided at the lower end portion 3a of the trunnion bracket 3, and is connected to the front end portion 52R of the rear lower rod 5R as shown in FIG.
　図３に示すように、トラニオンブラケット３の下端部３ａにおいて、連結部３５Ｆ，３５Ｒが設けられた位置の車両前後方向Ｙの幅Ｙｂより、当該位置より直上位置の幅Ｙａの方が狭くなっている。 As shown in FIG. 3, in the lower end portion 3a of the trunnion bracket 3, the width Ya at the position directly above the position is narrower than the width Yb in the vehicle longitudinal direction Y at the position where the coupling portions 35F and 35R are provided. Yes.
　以下に、後側ロアロッド５Ｒの前端部５２Ｒと連結部３５Ｒとの連結構造（後側の連結構造）について図１および図２を参照して説明する。なお、前側ロアロッド５Ｆの後端部５２Ｆと連結部３５Ｆとの連結構造（前側の連結構造）は、後側の連結構造と基本的に同じ構成であるため、その説明を省略し、前側の連結構造の説明に代える。 Hereinafter, a connection structure (rear connection structure) between the front end portion 52R of the rear lower rod 5R and the connection portion 35R will be described with reference to FIGS. 1 and 2. The connection structure (front connection structure) between the rear end portion 52F of the front lower rod 5F and the connection portion 35F is basically the same as the connection structure on the rear side, and therefore the description thereof will be omitted. Instead of description of structure.
　トラニオンブラケット３の下端部３ａには、図１に示すように、凹部３４が設けられている。凹部３４には、車幅方向Ｘで対向する両溝側壁および溝底壁３５Ｃを有し、後側ロアロッド５Ｒの前端部５２Ｒの一部が嵌め込まれている。溝底壁３５Ｃは、前側および後側の連結構造における凹部３４，３４を仕切る壁である。 As shown in FIG. 1, a recess 34 is provided at the lower end 3 a of the trunnion bracket 3. The recess 34 has both groove side walls and a groove bottom wall 35C facing each other in the vehicle width direction X, and a part of the front end 52R of the rear lower rod 5R is fitted therein. The groove bottom wall 35C is a wall that partitions the recesses 34, 34 in the front and rear connection structures.
　連結部３５Ｒは、図２に示すように、凹部３４の車幅方向Ｘの外側Ｘ１の溝側壁に設けられ、後側ロアロッド５Ｒの前端部５２Ｒに車幅方向Ｘの外側Ｘ１から連結される外側連結部３５Ａと、凹部３４の車幅方向Ｘの内側Ｘ２の溝側壁に設けられ、後側ロアロッド５Ｒの前端部５２Ｒに車幅方向Ｘの内側Ｘ２から連結される内側連結部３５Ｂとを備えている。 As shown in FIG. 2, the connecting portion 35R is provided on the groove side wall of the recess 34 on the outer side X1 in the vehicle width direction X, and is connected to the front end portion 52R of the rear lower rod 5R from the outer side X1 in the vehicle width direction X. 35 A of connecting parts and the inner side connection part 35B provided in the groove side wall of the inner side X2 of the recessed part 34 at the vehicle width direction X are connected with the front-end part 52R of the rear side lower rod 5R from the inner side X2 of the vehicle width direction X. Yes.
　外側連結部３５Ａには軸受部材３６Ａが設けられている。内側連結部３５Ｂには軸受部材３６Ｂが設けられている。軸受部材３６Ａ，３６Ｂの間には、軸方向を車幅方向Ｘとした軸部材３７が架設されている。軸部材３７は、後側ロアロッド５Ｒの前端部５２Ｒに設けられた嵌合孔５２Ｈに貫通している。これにより、後側ロアロッド５Ｒの前端部５２Ｒは、軸部材３７により回動可能に支持される。 A bearing member 36A is provided on the outer connecting portion 35A. A bearing member 36B is provided in the inner coupling portion 35B. Between the bearing members 36A and 36B, a shaft member 37 having an axial direction as the vehicle width direction X is installed. The shaft member 37 passes through a fitting hole 52H provided in the front end portion 52R of the rear lower rod 5R. Accordingly, the front end portion 52R of the rear lower rod 5R is rotatably supported by the shaft member 37.
　内側連結部３５Ｂは、ウエブ面１１ａより車幅方向Ｘで内側Ｘ２に設けられている。図２に、ウエブ面１１ａの車幅方向Ｘにおける位置ＷＳより内側Ｘ２に設けられた内側連結部３５Ｂを示す。内側連結部３５Ｂを内側Ｘ２に設けた分だけ、外側連結部３５Ａと車輪２１Ｆ，２１ＲとのクリアランスＳが広がる。 The inner connecting portion 35B is provided on the inner side X2 in the vehicle width direction X from the web surface 11a. FIG. 2 shows the inner connecting portion 35B provided on the inner side X2 from the position WS in the vehicle width direction X of the web surface 11a. The clearance S between the outer connecting portion 35A and the wheels 21F and 21R is increased by the amount of the inner connecting portion 35B provided on the inner side X2.
　外側連結部３５Ａと内側連結部３５Ｂとの間の車幅方向Ｘにおける中心位置ＣＰは、図２に示すように、ウエブ面１１ａの下方に位置している。 The center position CP in the vehicle width direction X between the outer connecting portion 35A and the inner connecting portion 35B is located below the web surface 11a as shown in FIG.
　以上により、後側の連結構造において、後側ロアロッド５Ｒの前端部５２Ｒは、軸部材３７により回転可能に支持される。同様に、前側の連結構造において、前側ロアロッド５Ｆの後端部５２Ｆは、軸部材３７により連結部３５Ｆに回転可能に支持される。 As described above, the front end 52R of the rear lower rod 5R is rotatably supported by the shaft member 37 in the rear connection structure. Similarly, in the front connection structure, the rear end portion 52F of the front lower rod 5F is rotatably supported by the connection portion 35F by the shaft member 37.
　前側及び後側の連結構造における軸受部材３６Ａ，３６Ａは、図１および図３に示すように、ボルト９７およびナット９８により外側連結部３５Ａ，３５Ａに締結される。同様に、前側及び後側の連結構造における軸受部材３６Ｂ，３６Ｂは、ボルト（図示略）およびナット（図示略）により内側連結部３５Ｂ，３５Ｂに締結される。 The bearing members 36A and 36A in the front and rear connection structures are fastened to the outer connection portions 35A and 35A by bolts 97 and nuts 98 as shown in FIGS. Similarly, the bearing members 36B and 36B in the front and rear connection structures are fastened to the inner connection portions 35B and 35B by bolts (not shown) and nuts (not shown).
　図４は、トラニオンブラケット３の底面図である。
　ジャッキアップ面部３８は、図４に示すように、トラニオンブラケット３の下端部３ａに設けられている。なお、ジャッキアップ面部３８は、ジャッキアップポイントとも称される。 FIG. 4 is a bottom view of the trunnion bracket 3.
The jack-up surface portion 38 is provided at the lower end portion 3a of the trunnion bracket 3 as shown in FIG. The jack-up surface portion 38 is also referred to as a jack-up point.
　ジャッキアップ面部３８は、前側の連結構造における内側連結部３５Ｂの後端部と、後側の連結構造における内側連結部３５Ｂの前端部と、溝底部３５Ｃの内側端部Ｃとが交差する部分に設けられている。ジャッキアップ面部３８は、ウエブ面１１ａより車幅方向Ｘで内側Ｘ２に位置している。図４に、ウエブ面１１ａの車幅方向Ｘにおける位置ＷＳより内側Ｘ２に位置するジャッキアップ面部３８を示す。 The jack-up surface portion 38 is formed at a portion where the rear end portion of the inner connection portion 35B in the front connection structure, the front end portion of the inner connection portion 35B in the rear connection structure, and the inner end portion C of the groove bottom portion 35C intersect. Is provided. The jack-up surface portion 38 is located on the inner side X2 in the vehicle width direction X from the web surface 11a. FIG. 4 shows the jack-up surface portion 38 located on the inner side X2 from the position WS in the vehicle width direction X of the web surface 11a.
　ジャッキアップ面部３８は、図４に示すように、車両用ジャッキの荷受部分（受け金）５０の形状に対応する大きさの平面を有している。内側連結部３５Ｂの下面には、ジャッキアップ面部３８に対して車両前後方向Ｙの前側Ｙ１に車幅方向Ｘに延在する段差部３９Ａが設けられている。内側連結部３５Ｂの下面には、ジャッキアップ面部３８に対して車両前後方向Ｙの後側Ｙ２に車幅方向Ｘに延在する段差部３９Ｂが設けられている。また、溝底部３５Ｃの下面には、ジャッキアップ面部３８に対して車幅方向Ｘの外側Ｘ１に車両前後方向Ｙに延在する段差部３９Ｃが設けられている。
　ジャッキアップ面部３８は、段差部３９Ａ，３９Ｂ，３９Ｃによって、内側連結部３５Ｂおよび溝底部３５Ｃの各下面より所定量深い（トラニオンブラケット３の取付状態で高い）段差溝の底面となっている。 As shown in FIG. 4, the jack-up surface portion 38 has a plane having a size corresponding to the shape of the cargo receiving portion (receiver) 50 of the vehicle jack. On the lower surface of the inner connecting portion 35B, a step portion 39A extending in the vehicle width direction X is provided on the front side Y1 in the vehicle longitudinal direction Y with respect to the jack-up surface portion 38. A stepped portion 39 </ b> B extending in the vehicle width direction X is provided on the rear side Y <b> 2 of the vehicle front-rear direction Y with respect to the jack-up surface portion 38 on the lower surface of the inner connecting portion 35 </ b> B. Further, on the lower surface of the groove bottom portion 35C, a step portion 39C extending in the vehicle longitudinal direction Y is provided on the outer side X1 in the vehicle width direction X with respect to the jackup surface portion 38.
The jack-up surface portion 38 is a bottom surface of a step groove that is a predetermined amount deeper than the lower surfaces of the inner coupling portion 35B and the groove bottom portion 35C (high in the attached state of the trunnion bracket 3) by the step portions 39A, 39B, and 39C.
　＜本実施の形態の効果＞
　以上のように、本実施の形態に係るトラニオンブラケットの内側連結部３５Ｂを、ウエブ面１１ａより車幅方向Ｘの内側Ｘ２に設けた分だけ、外側連結部３５Ａを車幅方向Ｘの内側Ｘ２に設けることができる。これにより、外側連結部３５Ａと車輪２１Ｆ，２１Ｒとのクリアランスを容易に確保することが可能となる。 <Effects of the present embodiment>
As described above, the outer connecting portion 35A is placed on the inner side X2 in the vehicle width direction X by the amount of the inner connecting portion 35B of the trunnion bracket according to the present embodiment provided on the inner side X2 in the vehicle width direction X from the web surface 11a. Can be provided. Thereby, the clearance between the outer connecting portion 35A and the wheels 21F and 21R can be easily secured.
　また、外側連結部３５Ａと内側連結部３５Ｂとの間の車幅方向Ｘにおける中心位置をウエブ面１１ａの下方に位置させた。これにより、ロアロッド５Ｆ，５Ｒから連結部３５Ｆ，３５Ｒへ入力される上下方向の荷重は、主に剪断力となって、ウエブ面１１ａと第１ステー部３１とを締結する複数（図面では１２本）のボルトにかかる。このため、第１ステー部３１をウエブ面１１ａから剥がすような力、また、第２ステー部３２をクロスメンバー１３の下面１３ａから剥がすような力が生じないため、その分だけ、トラニオンブラケット３の剛性を下げることができる。具体的には、トラニオンブラケット３において、連結部３５Ｆ，３５Ｒが設けられた位置の車両前後方向Ｙの幅Ｙｂより、その位置より直上位置の幅Ｙａの方を狭くすることができる。また、中間部３ｃから下端部３ａに渡って設けられる剛性を上げるためのリブの数を、減らすことができる。これにより、トラニオンブラケット３を軽量化することができる。 Further, the center position in the vehicle width direction X between the outer connecting portion 35A and the inner connecting portion 35B is positioned below the web surface 11a. Thereby, the load in the vertical direction input from the lower rods 5F and 5R to the connecting portions 35F and 35R mainly becomes a shearing force, and a plurality (12 in the drawing) fasten the web surface 11a and the first stay portion 31. ). For this reason, since the force which peels the 1st stay part 31 from the web surface 11a and the force which peels the 2nd stay part 32 from the lower surface 13a of the cross member 13 do not arise, the part of the trunnion bracket 3 is equivalent to that amount. The rigidity can be lowered. Specifically, in the trunnion bracket 3, the width Ya at the position directly above the position can be made narrower than the width Yb in the vehicle longitudinal direction Y at the position where the connecting portions 35F and 35R are provided. Further, the number of ribs for increasing the rigidity provided from the intermediate portion 3c to the lower end portion 3a can be reduced. Thereby, the trunnion bracket 3 can be reduced in weight.
　また、ジャッキアップ面部３８を、ウエブ面１１ａより車幅方向Ｘで内側Ｘ２に設けることで、ジャッキアップ時にかかる荷重をシャシサイドフレーム１の下面に伝えて、分散させることができ、ジャッキアップ面部３８の耐荷重性を上げることができる。 Further, by providing the jack-up surface portion 38 on the inner side X2 in the vehicle width direction X from the web surface 11a, the load applied during jack-up can be transmitted to the lower surface of the chassis side frame 1 and dispersed. The load resistance can be increased.
　また、ジャッキアップ面部３８を、ウエブ面１１ａより車幅方向Ｘで内側Ｘ２に設けた分だけ、同じジャッキアップ量で車輪をより多く浮かすことができる。 Further, more wheels can be floated with the same jack-up amount as much as the jack-up surface portion 38 is provided on the inner side X2 in the vehicle width direction X from the web surface 11a.
　また、ジャッキアップ面部３８に対する車両前後方向の前側、後側および車幅方向の外側の各位置に段差部３９Ａ，３９Ｂ，３９Ｃを設け、ジャッキアップ面部３８を段差部３９Ａ，３９Ｂ，３９Ｃで三方向から取り囲むことにより、ジャッキアップ時に上昇する受け金５０の水平方向の移動を規制することができる。 Further, step portions 39A, 39B, and 39C are provided at positions on the front and rear sides in the vehicle front-rear direction and the vehicle width direction with respect to the jack-up surface portion 38, and the jack-up surface portion 38 is provided in three directions with the step portions 39A, 39B, and 39C. By encircling, the horizontal movement of the catcher 50 that rises during jack-up can be restricted.
　その他、上記実施の形態は、何れも本開示の実施するにあたっての具体化の一例を示したものに過ぎず、これらによって本開示の技術的範囲が限定的に解釈されてはならないものである。すなわち、本開示はその要旨、またはその主要な特徴から逸脱することなく、様々な形で実施することができる。 In addition, each of the above-described embodiments is merely an example of implementation in carrying out the present disclosure, and the technical scope of the present disclosure should not be interpreted in a limited manner. That is, the present disclosure can be implemented in various forms without departing from the gist or the main features thereof.
　本出願は、２０１６年１０月６日付で出願された日本国特許出願（特願２０１６-１９８１０３）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 a Japanese patent application (Japanese Patent Application No. 2016-198103) filed on October 6, 2016, the contents of which are incorporated herein by reference.
　本開示のトラニオンブラケットは、車輪とのクリアランスを容易に確保することが要求される後２輪車の懸架装置として有用である。 The trunnion bracket of the present disclosure is useful as a suspension device for a rear two-wheeled vehicle that is required to easily secure a clearance with wheels.
　１　シャシフレーム
　１１　サイドフレーム
　１２　サイドフレーム
　１３　クロスメンバー
　２０Ｆ　前側車軸
　２０Ｒ　後側車軸
　２１Ｆ　前側車輪
　２１Ｒ　後側車輪
　３　トラニオンブラケット
　３ａ　下端部
　３１　第１ステー部
　３２　第２ステー部
　３３　嵌合部
　３４　凹部
　３５Ａ　外側連結部
　３５Ｂ　内側連結部
　３５Ｆ　連結部
　３５Ｒ　連結部
　３６Ａ　軸受部材
　３６Ｂ　軸受部材
　３７　軸部材
　３８　ジャッキアップ面部
　３９Ａ　段差部
　３９Ｂ　段差部
　３９Ｃ　段差部
　３００　トラニオン式サスペンション
　４　リーフスプリング
　５Ｆ　前側ロアロッド
　５Ｒ　後側ロアロッド
　６Ｆ　前側アッパＶロッド
　６Ｒ　後側アッパＶロッド
　７　トラニオンシャフト
　８　サドル DESCRIPTION OF SYMBOLS 1 Chassis frame 11 Side frame 12 Side frame 13 Cross member 20F Front side axle 20R Rear side axle 21F Front side wheel 21R Rear side wheel 3 Trunnion bracket 3a Lower end part 31 1st stay part 32 2nd stay part 33 Fitting part 34 Recessed part 35A Outside Connecting portion 35B Inner connecting portion 35F Connecting portion 35R Connecting portion 36A Bearing member 36B Bearing member 37 Shaft member 38 Jack-up surface portion 39A Stepped portion 39B Stepped portion 39C Stepped portion 300 Trunnion type suspension 4 Leaf spring 5F Front lower rod 6R Rear lower rod 6F Upper V rod 6R Rear upper V rod 7 Trunnion shaft 8 Saddle

Claims (4)

  1. 　車幅方向の両側に配置された一対のフレームにおける車幅方向の外側に面するウエブ面に固定され、車両の前後に配置された一対の車軸にロッド部材を介して連結されるトラニオンブラケットにおいて、
    　前記ロッド部材に車幅方向の外側から連結される外側連結部と、
    　前記ロッド部材に車幅方向の内側から連結される内側連結部と、
    　を備え、
    　前記内側連結部は、前記ウエブ面より車幅方向の内側に設けられているトラニオンブラケット。     In the trunnion bracket fixed to the web surface facing the outer side in the vehicle width direction in the pair of frames arranged on both sides in the vehicle width direction and connected to the pair of axles arranged in the front and rear of the vehicle via a rod member,
    An outer connecting portion connected to the rod member from the outside in the vehicle width direction;
    An inner coupling portion coupled to the rod member from the inner side in the vehicle width direction;
    With
    The inner connecting portion is a trunnion bracket provided on the inner side in the vehicle width direction than the web surface.
  2. 　前記外側連結部と前記内側連結部との間の車幅方向における中心位置は、前記ウエブ面の下方に位置している請求項１に記載のトラニオンブラケット。 The trunnion bracket according to claim 1, wherein a center position in the vehicle width direction between the outer connecting portion and the inner connecting portion is located below the web surface.
  3. 　車両の前後に配置された一対の車軸の間に、トラニオンブラケットによりトラニオンシャフトをフレームにおける車幅方向の外側に面するウエブ面に固定し、前記トラニオンシャフトにリーフスプリングの中央部を回動自在に取り付けると共に、前記リーフスプリングの両端部により前記一対の車軸を支持し、前記トラニオンブラケットにロッド部材を介して前記一対の車軸を連結するトラニオン式サスペンションにおいて、
    　前記トラニオンブラケットは、
    　前記ロッド部材に車幅方向の外側から連結される外側連結部と、
    　前記ロッド部材に車幅方向の内側から連結される内側連結部と、
    　を備え、
    　前記内側連結部は、前記ウエブ面より車幅方向の内側に設けられているトラニオン式サスペンション。     The trunnion shaft is fixed to the web surface facing the outside in the vehicle width direction of the frame by a trunnion bracket between a pair of axles arranged at the front and rear of the vehicle, and the central portion of the leaf spring can be freely rotated on the trunnion shaft. In the trunnion type suspension that attaches and supports the pair of axles by both end portions of the leaf spring, and connects the pair of axles to the trunnion bracket via a rod member.
    The trunnion bracket is
    An outer connecting portion connected to the rod member from the outside in the vehicle width direction;
    An inner coupling portion coupled to the rod member from the inner side in the vehicle width direction;
    With
    The inner connecting portion is a trunnion type suspension provided on the inner side in the vehicle width direction from the web surface.
  4. 　前記外側連結部と前記内側連結部との間の車幅方向における中心位置は、前記ウエブ面の下方に位置している請求項３に記載のトラニオン式サスペンション。 The trunnion type suspension according to claim 3, wherein a center position in a vehicle width direction between the outer connecting portion and the inner connecting portion is located below the web surface.
PCT/JP2017/036156 2016-10-06 2017-10-04 Trunnion bracket and trunnion-type suspension WO2018066608A1 (en)

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PH12019500707A PH12019500707A1 (en) 2016-10-06 2019-04-01 Trunnion bracket and trunnion-type suspension

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CN201338520Y (en) * 2009-01-16 2009-11-04 安徽华菱汽车股份有限公司 Dual-sided supporting balance shaft suspension frame
CN102501740A (en) * 2011-11-03 2012-06-20 安徽华菱汽车有限公司 Trapezoidal non-reactive suspension of heavy truck
CN202656818U (en) * 2012-07-19 2013-01-09 上汽依维柯红岩商用车有限公司 Balanced suspension for wide-body mining car
CN102923193B (en) * 2012-11-22 2015-09-09 陕西重型汽车有限公司 Heavy motor vehicle back balance suspension system
JP6130146B2 (en) * 2013-01-11 2017-05-17 日野自動車株式会社 Trunnion suspension structure

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JPH03128503U (en) * 1990-04-10 1991-12-25
JP2016150626A (en) * 2015-02-17 2016-08-22 いすゞ自動車株式会社 Supporting structure of axle

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