JP2007085434A

JP2007085434A - Air spring

Info

Publication number: JP2007085434A
Application number: JP2005274166A
Authority: JP
Inventors: Yoichi Kakiuchi; 洋一垣内
Original assignee: Toyo Tire and Rubber Co Ltd
Current assignee: Toyo Tire Corp
Priority date: 2005-09-21
Filing date: 2005-09-21
Publication date: 2007-04-05

Abstract

PROBLEM TO BE SOLVED: To provide an air spring which reduces weight while having a structure for preventing a lower end part of a connecting member for connecting a frame of a vehicle side and a frame reinforcing member in a vertical direction, from intervening against an upper surface of an upper plate. SOLUTION: The air spring is provided with: a diaphragm 1; the upper plate 2; a piston 3; and an aluminum alloy plate 12 for mounting a frame. The plate 12 for mounting the frame consists of a first mounting part 16, a second mounting part 17 and a connecting part 18 wherein a middle part 19 of the second mounting part 17 is formed as a dog leg shape and a protruding part 50 of the middle part 19 is positioned at an outer side H in width direction which is outside of the frame F of the vehicle body side. A bolt insertion hole 23 is formed in the protruding part 50 and a lower end part 25T of the connecting member 25 for connecting the frame F of the vehicle body side and the frame reinforcing member 24 is accepted in a space part J. COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、
気体室の壁部を構成する円筒状のダイヤフラムと、前記ダイヤフラムの上端に固定される円板状のアッパープレートと、前記ダイヤフラムの下端に固定されるピストンと、前記アッパープレートに立設された取付けブラケットとを備え、前記取付けブラケットに、平面視長方形状の車体側のフレームの幅方向の一側面に連結する縦壁状の連結壁が設けられている空気ばねに関する。 The present invention
A cylindrical diaphragm constituting the wall of the gas chamber, a disk-like upper plate fixed to the upper end of the diaphragm, a piston fixed to the lower end of the diaphragm, and an installation erected on the upper plate The present invention relates to an air spring including a bracket and provided with a vertical wall-shaped connecting wall that is connected to one side surface in the width direction of a frame on the vehicle body side that is rectangular in plan view.

この種の空気ばねは、鉄道車両、バス、トラックにおける車体側のフレームと車軸側との間に介在している。そして、ダイヤフラム内への空気の出し入れ機能を設けることで、防振効果に加え、積載重量が変わっても車高を一定に保つことができる等、種々の特有の作用・効果を奏する。 This type of air spring is interposed between a vehicle body side frame and an axle side in a railway vehicle, bus, or truck. By providing the function of taking air into and out of the diaphragm, in addition to the anti-vibration effect, the vehicle height can be kept constant even when the load weight changes, and various unique actions and effects are exhibited.

図５，図６に示すように、一般に車体側のフレームは縦断面コの字形状、平面視長方形状に形成されており、このフレームＦにはフレーム補強部材２４がビス２５（連結部材の一例）で上下方向に連結されることがある。すなわちフレーム補強部材２４を、車体側のフレームＦと直交する方向に沿う上側フレーム補強部材５１と、車体側のフレームＦに沿う下側フレーム補強部材５２とから構成し、車体側のフレームＦの下側の壁部３８と下側フレーム補強部材５２とを重合してビス２５で連結するとともに、アッパープレート２の外方側で、車体側のフレームＦの下側の壁部３８を上側フレーム補強部材５１の一端部と下側フレーム補強部材５２で挟み込み、三者を複数のビス２５で一体に連結している。上側フレーム補強部材５１の他端部は、別の空気ばね（図示せず）に支持された別の車体側のフレーム（図示せず）に図５，図６に示す手段と同様の手段で連結されている。 As shown in FIGS. 5 and 6, the frame on the vehicle body side is generally formed in a U-shaped longitudinal section and a rectangular shape in plan view. A frame reinforcing member 24 is provided on this frame F with screws 25 (an example of a connecting member). ) May be connected vertically. That is, the frame reinforcing member 24 includes an upper frame reinforcing member 51 along a direction orthogonal to the frame F on the vehicle body side, and a lower frame reinforcing member 52 along the frame F on the vehicle body side. The side wall portion 38 and the lower frame reinforcing member 52 are superposed and connected with screws 25, and the lower wall portion 38 of the vehicle body side frame F is connected to the upper frame reinforcing member on the outer side of the upper plate 2. One end of 51 and the lower frame reinforcing member 52 are sandwiched, and the three members are integrally connected by a plurality of screws 25. The other end of the upper frame reinforcing member 51 is connected to another vehicle body frame (not shown) supported by another air spring (not shown) by means similar to those shown in FIGS. Has been.

この構造ではビス２５の頭部２５Ｔが下側フレーム補強部材５２の底面から下方に突出することから、ビス２５の頭部２５Ｔをアッパープレート２の上面に干渉させないようにする必要がある。その構造として、従来、図５，図６に示すように、アッパープレート２を、互いに重合する鉄製の上側プレート４０と下側プレート４１から構成し、取付けボルト３０で上側プレート４０と下側プレート４１を連結し、上側プレート４０の上面に溶接固着した鉄製の複数のフレーム載置用ブロック４２に車体側のフレームＦ及び下側フレーム補強部材５２を載置させていた。これにより、ビス２５の頭部２５Ｔを隣合うフレーム載置用ブロック４２間の空間部Ｊに受け入れて上記の干渉を回避できる。符号１はダイヤフラム、３はピストン、４はダイヤフラム１内への空気給排孔、５は取付けブラケット、Ａは空気ばねである。 In this structure, the head 25T of the screw 25 protrudes downward from the bottom surface of the lower frame reinforcing member 52, so that it is necessary to prevent the head 25T of the screw 25 from interfering with the upper surface of the upper plate 2. Conventionally, as shown in FIGS. 5 and 6, the upper plate 2 is composed of an iron upper plate 40 and a lower plate 41 that are superposed on each other, and the upper plate 40 and the lower plate 41 are mounted with mounting bolts 30. The frame F on the vehicle body side and the lower frame reinforcing member 52 are placed on a plurality of iron frame placement blocks 42 that are welded and fixed to the upper surface of the upper plate 40. Thereby, the head 25T of the screw 25 is received in the space J between the adjacent frame mounting blocks 42, and the above-described interference can be avoided. Reference numeral 1 is a diaphragm, 3 is a piston, 4 is an air supply / exhaust hole into the diaphragm 1, 5 is a mounting bracket, and A is an air spring.

上記従来の構造によれば、上側プレートと下側プレートが鉄から成り、その上、鉄製の複数のフレーム載置用ブロックを上側プレートに溶接固着してあったために、空気ばねが重量化していた。 According to the above-described conventional structure, the upper plate and the lower plate are made of iron, and the plurality of iron frame mounting blocks are fixedly welded to the upper plate, so that the air spring is heavy. .

本発明の目的は、車体側のフレームとフレーム補強部材とを上下方向に連結する連結部材の下端部をアッパープレートの上面に干渉させない構造でありながら、軽量化を図ることができる空気ばねを提供する点にある。 An object of the present invention is to provide an air spring that can be reduced in weight while having a structure in which a lower end portion of a connecting member that connects a vehicle body side frame and a frame reinforcing member in the vertical direction does not interfere with an upper surface of an upper plate. There is in point to do.

本発明の特徴は、
気体室の壁部を構成する円筒状のダイヤフラムと、前記ダイヤフラムの上端に固定される円板状のアッパープレートと、前記ダイヤフラムの下端に固定されるピストンと、前記アッパープレートに立設された取付けブラケットとを備え、前記取付けブラケットに、平面視長方形状の車体側のフレームの幅方向の一側面に連結する縦壁状の連結壁が設けられている空気ばねであって、
前記アッパープレートの上面と前記車体側のフレームの底面との間に介在するアルミニウム合金製のフレーム載置用プレートを備え、前記フレーム載置用プレートは、前記幅方向一方側の第１フレーム部分を載置する第１載置部と、前記幅方向他方側の第２フレーム部分を載置する第２載置部と、前記第１載置部と第２載置部を連結する連結部とから成り、前記車体側のフレームの長手方向に沿う方向における前記第１載置部の両端面と前記第２載置部の両端面とが前記アッパープレートの外周部側に位置し、前記連結部は、前記長手方向に沿う方向で間隔を空けて位置する一対の連結部分から成り、前記長手方向に沿う方向における前記第２載置部の中間部が、前記アッパープレートの外周部側に向かって突出する平面視くの字形状に形成されて、前記中間部の突出部が前記車体側のフレームよりも前記幅方向外方側に位置するよう構成され、前記突出部を前記アッパープレートに連結するための取付けボルトを挿通させるボルト挿通孔が前記突出部に形成され、前記車体側のフレームとフレーム補強部材とを上下方向に連結する連結部材の下端部を、前記第１載置部と第２載置部と一対の連結部分とで囲まれる空間部に受入れるように構成され、前記第１載置部と一方の前記連結部分と他方の連結部分とのいずれかに、前記アッパープレートに対する周り止め用のピンを挿入させるピン穴が形成されている点にある。 The feature of the present invention is that
A cylindrical diaphragm constituting the wall of the gas chamber, a disk-like upper plate fixed to the upper end of the diaphragm, a piston fixed to the lower end of the diaphragm, and an installation erected on the upper plate A bracket, and the mounting bracket is provided with a vertical wall-like connecting wall that is connected to one side in the width direction of the frame on the vehicle body side that is rectangular in plan view,
A frame mounting plate made of aluminum alloy interposed between the upper surface of the upper plate and the bottom surface of the frame on the vehicle body side, the frame mounting plate having a first frame portion on one side in the width direction; From the first placement portion to be placed, the second placement portion to place the second frame portion on the other side in the width direction, and the connecting portion that connects the first placement portion and the second placement portion. And both end surfaces of the first mounting portion and both end surfaces of the second mounting portion in the direction along the longitudinal direction of the frame on the vehicle body side are located on the outer peripheral side of the upper plate, and the connecting portion is The intermediate portion of the second mounting portion in the direction along the longitudinal direction protrudes toward the outer peripheral side of the upper plate. Formed in a square shape And a bolt insertion hole through which a mounting bolt for connecting the projection to the upper plate is configured such that the projection of the intermediate portion is positioned on the outer side in the width direction with respect to the frame on the vehicle body side. Is formed in the projecting portion, and a lower end portion of a connecting member that connects the vehicle body side frame and the frame reinforcing member in the vertical direction is formed by the first mounting portion, the second mounting portion, and a pair of connecting portions. A pin hole is formed to be received in the enclosed space, and a pin for inserting a rotation-preventing pin with respect to the upper plate is formed in one of the first mounting portion, the one connecting portion, and the other connecting portion. It is in the point.

この構成により、フレーム載置用プレートがアッパープレートに載置し、前記ボルト挿通孔に挿通された取付けボルトでフレーム載置用プレートがアッパープレートに取付けられる。また、車体側のフレームとフレーム補強部材とを上下方向に連結する連結部材の下端部を、前記第１載置部と第２載置部と一対の連結部分とで囲まれる空間部に受入れる。第１載置部と一方の前記連結部分と他方の連結部分とのいずれかにはピン穴が形成されており、このピン穴に挿入させたピンがアッパープレートに対するフレーム載置用プレートの回転を阻止する。 With this configuration, the frame placing plate is placed on the upper plate, and the frame placing plate is attached to the upper plate with the mounting bolt inserted through the bolt insertion hole. Further, the lower end portion of the connecting member that connects the vehicle body side frame and the frame reinforcing member in the vertical direction is received in a space portion surrounded by the first mounting portion, the second mounting portion, and the pair of connecting portions. A pin hole is formed in one of the first mounting portion and one of the connecting portion and the other connecting portion, and the pin inserted into the pin hole rotates the frame mounting plate with respect to the upper plate. Stop.

上記の構成によれば、フレーム載置用プレートがアルミニウム合金製であるから、フレーム載置用プレートを軽量化できる。そして、長手方向に沿う方向における前記第１載置部の両端面と前記第２載置部の両端面とが前記アッパープレートの外周部側に位置していることで、第１載置部と第２載置部の長さを充分長くすることができて、車体側のフレームをフレーム載置用プレートで安定支持できる。 According to the above configuration, since the frame mounting plate is made of an aluminum alloy, the frame mounting plate can be reduced in weight. And both end surfaces of the first mounting portion and both end surfaces of the second mounting portion in the direction along the longitudinal direction are located on the outer peripheral side of the upper plate, The length of the second mounting portion can be made sufficiently long, and the frame on the vehicle body side can be stably supported by the frame mounting plate.

第２載置部の中間部が、アッパープレートの外周部側に向かって突出する平面視くの字形状に形成されて、前記中間部の突出部が車体側のフレームよりも前記幅方向外方側に位置するよう構成され、突出部をアッパープレートに連結するための取付けボルトを挿通させるボルト挿通孔が突出部に形成されているから、ボルト挿通孔に挿通させた取付けボルトの上端部が車体側のフレームに干渉するのを回避できる。そして、ボルト挿通孔の軸芯周りに作用する力をくの字形の前記中間部全体に分散させやすくなって、前記力に対して前記中間部を強い構造体に構成することができる。 The intermediate portion of the second mounting portion is formed in a U-shape in a plan view protruding toward the outer peripheral portion side of the upper plate, and the protruding portion of the intermediate portion is more outward in the width direction than the frame on the vehicle body side. Since the bolt insertion hole for inserting the mounting bolt for connecting the protrusion to the upper plate is formed in the protrusion, the upper end of the mounting bolt inserted through the bolt insertion hole is the vehicle body. Interference with the side frame can be avoided. And it becomes easy to disperse | distribute the force which acts around the axial center of a volt | bolt insertion hole to the said intermediate part of a dogleg shape, and can form the said intermediate part to a strong structure with respect to the said force.

前記第１載置部と第２載置部と連結部とは同一の肉厚に設定されて、前記第１載置部と第２載置部と連結部との上面が上下方向で同一位置に位置するとともに、前記第１載置部と第２載置部と連結部との下面が上下方向で同一位置に位置し、前記第１載置部と第２載置部と連結部の少なくとも一つの下面に、前記空間部内に溜まった水を排出するための水抜き用の溝が形成されていると、連結部にも車体側のフレームを載置でき、水で車体側のフレームが腐食する不具合を回避できる。 The first mounting portion, the second mounting portion, and the connecting portion are set to the same thickness, and the upper surfaces of the first mounting portion, the second mounting portion, and the connecting portion are in the same position in the vertical direction. And the lower surfaces of the first mounting portion, the second mounting portion, and the connecting portion are positioned at the same position in the vertical direction, and at least the first mounting portion, the second mounting portion, and the connecting portion If a water draining groove is formed on one lower surface to drain the water accumulated in the space, the frame on the vehicle body side can be placed on the connecting portion, and the frame on the vehicle body side is corroded by water. Can be avoided.

前記アッパープレートの周縁部で前記ダイヤフラムの上端を上方から包み込むように前記アッパープレートの周縁部を前記ダイヤフラムの上端にかしめ固定してあると、アッパープレートを、従来の構造のように上側プレートと下側プレートの二つの部材から構成しなくても済み、より軽量化を図ることができる。 If the peripheral edge of the upper plate is caulked and fixed to the upper end of the diaphragm so that the upper edge of the diaphragm is wrapped from above with the peripheral edge of the upper plate, the upper plate is connected to the upper plate and the lower plate as in the conventional structure. It is not necessary to use two members of the side plate, and the weight can be further reduced.

本発明によれば、
車体側のフレームとフレーム補強部材とを上下方向に連結する連結部材の下端部をアッパープレートの上面に干渉させない構造でありながら、軽量化を図ることができる空気ばねを提供することができた。 According to the present invention,
It is possible to provide an air spring that can be reduced in weight while having a structure in which the lower end portion of the connecting member that connects the vehicle body side frame and the frame reinforcing member in the vertical direction does not interfere with the upper surface of the upper plate.

以下、本発明を実施するための最良の形態を図面に基づいて説明する。図１〜図４に、鉄道車両、バス、トラック等の平面視長方形状の車体側のフレームＦと車軸側との間に設けられる空気ばねＡを示してある。この空気ばねＡは、気体室である第１空間Ｓ１の壁部を構成する縦形円筒状のダイヤフラム１と、ダイヤフラム１の上端１Ａに固定される円板状のアッパープレート２と、ダイヤフラム１の下端１Ｂに密嵌固定されるピストン３と、アッパープレート２に立設された取付けブラケット５とを備え、取付けブラケット５に、車体側のフレームＦの幅方向Ｗの一側面２１に連結する縦壁状の連結壁１０が設けられている。 Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. 1 to 4 show an air spring A provided between a frame F on the side of a vehicle body having a rectangular shape in plan view, such as a railway vehicle, a bus, and a truck, and the axle side. The air spring A includes a vertical cylindrical diaphragm 1 that constitutes a wall portion of the first space S1 that is a gas chamber, a disk-shaped upper plate 2 that is fixed to the upper end 1A of the diaphragm 1, and a lower end of the diaphragm 1 1 is provided with a piston 3 tightly fitted and fixed to 1B and a mounting bracket 5 erected on the upper plate 2, and the mounting bracket 5 is connected to one side 21 of the width direction W of the frame F on the vehicle body side. The connecting wall 10 is provided.

図３，図４に示すように、車体側のフレームＦは断面コの字形の長尺の部材であり、この車体側のフレームＦにフレーム補強部材２４がビス２５（連結部材の一例）で上下方向Ｂに連結されている。すなわちフレーム補強部材２４を、車体側のフレームＦと直交する方向に沿う上側フレーム補強部材５１と、車体側のフレームＦに沿う下側フレーム補強部材５２とから構成し、車体側のフレームＦの下側の壁部３８と下側フレーム補強部材５２とを重合して複数のビス２５で連結するとともに、アッパープレート２の外周部側で、車体側のフレームＦの下側の壁部３８を上側フレーム補強部材５１の一端部と下側フレーム補強部材５２で挟み込み、三者に複数のビス２５を貫通させてこれらを一体に連結している。上側フレーム補強部材５１の他端部は、別の空気ばね（図示せず）に支持された別の車体側のフレーム（図示せず）に連結されている。 As shown in FIGS. 3 and 4, the frame F on the vehicle body side is a long member having a U-shaped cross section, and the frame reinforcing member 24 is vertically moved by screws 25 (an example of a connecting member) on the frame F on the vehicle body side. Linked in direction B. That is, the frame reinforcing member 24 includes an upper frame reinforcing member 51 along a direction orthogonal to the frame F on the vehicle body side, and a lower frame reinforcing member 52 along the frame F on the vehicle body side. The side wall portion 38 and the lower frame reinforcing member 52 are overlapped and connected by a plurality of screws 25, and the lower wall portion 38 of the vehicle body side frame F is connected to the upper frame on the outer peripheral portion side of the upper plate 2. The reinforcing member 51 is sandwiched between one end of the reinforcing member 51 and the lower frame reinforcing member 52, and a plurality of screws 25 are passed through the three members to integrally connect them. The other end of the upper frame reinforcing member 51 is connected to another vehicle body side frame (not shown) supported by another air spring (not shown).

アッパープレート２は、ダイヤフラム１内への空気給排孔４を備え、アッパープレート２の周縁部２Ｃでダイヤフラム１の上端１Ａを上方Ｕから包み込むように前記周縁部２Ｃをダイヤフラム１の上端１Ａにかしめ固定してある。符号Ｏはダイヤフラム１の軸芯であり、アッパープレート２の軸芯であり、ピストン３の軸芯である。 The upper plate 2 is provided with an air supply / discharge hole 4 into the diaphragm 1, and the peripheral edge 2 C is caulked to the upper end 1 A of the diaphragm 1 so as to wrap the upper end 1 A of the diaphragm 1 from above U with the peripheral edge 2 C of the upper plate 2. It is fixed. Reference numeral O denotes an axis of the diaphragm 1, an axis of the upper plate 2, and an axis of the piston 3.

ピストン３は、ダイヤフラム１の下端１Ｂが固定される内側の有底の筒部６と、下側のダイヤフラム部分９（下端部９）が裏返って被さる外側の筒部７と、外側の筒部７の上端側の周壁と内側の筒部６の上端側の周壁とを連結する上壁１１とから成る。上記のように、ダイヤフラム１に対してピストン３を上向きに押し込んだようにダイヤフラム１の下端部９が内側に折り返されている。内側の筒部６の内部の第２空間Ｓ２はダイヤフラム１内の第１空間Ｓ１と連通している。 The piston 3 includes an inner bottomed cylindrical portion 6 to which the lower end 1B of the diaphragm 1 is fixed, an outer cylindrical portion 7 that the lower diaphragm portion 9 (lower end portion 9) covers over, and an outer cylindrical portion 7. And an upper wall 11 that connects the peripheral wall on the upper end side of the inner cylindrical portion 6 and the peripheral wall on the upper end side of the inner cylindrical portion 6. As described above, the lower end portion 9 of the diaphragm 1 is folded inward so that the piston 3 is pushed upward with respect to the diaphragm 1. The second space S 2 inside the inner cylinder portion 6 communicates with the first space S 1 in the diaphragm 1.

内側の筒部６と外側の筒部７とは同心状に位置し、内側の筒部６の底部中央に円柱状の上向きの凸部１４を突設して凸部１４に下方から雌ねじ部１５を形成してある。 The inner cylindrical portion 6 and the outer cylindrical portion 7 are located concentrically, and a cylindrical upward convex portion 14 is provided at the center of the bottom of the inner cylindrical portion 6 so that the female screw portion 15 is provided on the convex portion 14 from below. Is formed.

取付ブラケット５は１枚の金属板をプレス加工して形成され、連結壁１０の幅方向の両端部から車体側のフレームＦが位置する側とは反対側に延出する一対の支持壁１３を備えている。連結壁１０の下端部と一対の支持壁１３の下端部とはアッパープレート２の上面２ａに溶接固着されている。 The mounting bracket 5 is formed by pressing a single metal plate, and includes a pair of support walls 13 extending from both ends of the connecting wall 10 in the width direction to the side opposite to the side where the vehicle body side frame F is located. I have. The lower end portion of the connecting wall 10 and the lower end portions of the pair of support walls 13 are welded and fixed to the upper surface 2 a of the upper plate 2.

図３，図４にも示すように、アッパープレート２の上面２ａと車体側のフレームＦの底面２２との間に介在するアルミニウム合金製のフレーム載置用プレート１２が備えられている。このフレーム載置用プレート１２は、前記幅方向一方側の第１フレーム部分Ｆ１を載置する平面視長方形状の第１載置部１６と、前記幅方向他方側の第２フレーム部分Ｆ２を載置する第２載置部１７と、第１載置部１６と第２載置部１７を連結する連結部１８とから成る。 As shown in FIGS. 3 and 4, a frame mounting plate 12 made of aluminum alloy is provided between the upper surface 2 a of the upper plate 2 and the bottom surface 22 of the frame F on the vehicle body side. The frame mounting plate 12 mounts a first mounting portion 16 having a rectangular shape in plan view on which the first frame portion F1 on one side in the width direction is mounted, and a second frame portion F2 on the other side in the width direction. And a connecting portion 18 that connects the first mounting portion 16 and the second mounting portion 17.

図１，図２に示すように、車体側のフレームＦの長手方向Ｄに沿う方向Ｅにおける第１載置部１６の両端面１６Ｔと第２載置部１７の両端面１７Ｔとはアッパープレート２の外周部２Ｇ側に位置している。前記連結部１８は、前記長手方向Ｄに沿う方向Ｅで間隔を空けて位置する一対の連結部分５５，５６から成る。そして、前記長手方向Ｄに沿う方向Ｅにおける第２載置部１７の中間部１９が、アッパープレートの外周部２Ｇ側に向かって突出する平面視くの字形状に形成されて、前記中間部１９の突出部５０（屈曲部）が車体側のフレームＦよりも前記幅方向外方側Ｈに位置するよう構成され、前記突出部５０をアッパープレート２に連結するための第１取付けボルト３０を挿通させるボルト挿通孔２３が突出部５０に形成されている。 As shown in FIGS. 1 and 2, both end surfaces 16T of the first mounting portion 16 and both end surfaces 17T of the second mounting portion 17 in the direction E along the longitudinal direction D of the frame F on the vehicle body side are the upper plate 2. Is located on the outer peripheral portion 2G side. The connecting portion 18 is composed of a pair of connecting portions 55 and 56 that are spaced apart in the direction E along the longitudinal direction D. And the intermediate part 19 of the 2nd mounting part 17 in the direction E along the said longitudinal direction D is formed in the square shape in planar view which protrudes toward the outer peripheral part 2G side of the upper plate, The said intermediate part 19 The protruding portion 50 (bent portion) is positioned on the outer side H in the width direction with respect to the frame F on the vehicle body side, and the first mounting bolt 30 for connecting the protruding portion 50 to the upper plate 2 is inserted. A bolt insertion hole 23 is formed in the protruding portion 50.

第１載置部１６に、アッパープレート２に対する周り止め用のピンＰを挿入させるピン穴２６が形成されている。第１載置部１６と第２載置部１７と連結部１８とは同一の肉厚に設定されて、第１載置部１６と第２載置部１７と連結部１８との上面１６Ｊ，１７Ｊ，１８Ｊが上下方向Ｂで同一位置に位置するとともに、第１載置部１６と第２載置部１７と連結部１８との下面１６Ｋ，１７Ｋ，１８Ｋが上下方向で同一位置に位置している。そして、第２載置部１８の下面１８Ｋに、第１載置部１６と第２載置部１７と一対の連結部分５５，５６とで囲まれる空間部Ｊ内に溜まった水を排出するための断面円弧状の水抜き用の溝２７が形成されている。 A pin hole 26 is formed in the first placement portion 16 for inserting a pin P for preventing rotation with respect to the upper plate 2. The first mounting portion 16, the second mounting portion 17, and the connecting portion 18 are set to the same thickness, and the upper surface 16J of the first mounting portion 16, the second mounting portion 17, and the connecting portion 18, 17J and 18J are positioned at the same position in the vertical direction B, and the lower surfaces 16K, 17K, and 18K of the first mounting portion 16, the second mounting portion 17, and the connecting portion 18 are positioned at the same position in the vertical direction. Yes. And in order to discharge | release the water collected in the space part J enclosed by the lower surface 18K of the 2nd mounting part 18 by the 1st mounting part 16, the 2nd mounting part 17, and a pair of connection part 55,56. A water draining groove 27 having a circular arc shape is formed.

上記の構造により、フレーム載置用プレート１２がアッパープレート２に載置し、フレーム載置用プレート１２のボルト挿通孔２３に挿通された第１取付けボルト３０・ナット２８・座金２９でフレーム載置用プレート１２がアッパープレート２に取付けられる。また、前記ピン穴２６に挿入させたピンＰでアッパープレート２に対するフレーム載置用プレート１２の縦軸芯周りの回転が阻止される。 With the structure described above, the frame mounting plate 12 is mounted on the upper plate 2, and the first mounting bolt 30, the nut 28, and the washer 29 are inserted into the bolt insertion hole 23 of the frame mounting plate 12. A working plate 12 is attached to the upper plate 2. Further, rotation of the frame mounting plate 12 around the longitudinal axis of the upper plate 2 is prevented by the pin P inserted into the pin hole 26.

そして車体側のフレームＦが、車体の前後方向に沿う姿勢でフレーム載置用プレート１２に載置されるとともに、車体側のフレームＦの幅方向の一側面２１が取付けブラケット５の連結壁１０に一対の第２取付けボルト３９でボルト固定される。前記ビス２５の頭部２５Ｔ（連結部材の下端部に相当）は下側フレーム補強部材５２の底面から下方に突出しており、ビス２５の頭部２５Ｔ（連結部材の下端部に相当）が前記空間部Ｊに受け入れられる。このように前記ビス２５の頭部２５Ｔを前記空間部Ｊに受入れるように構成してある。 The frame F of the vehicle body side, while being mounted on the frame mounting plate 12 in a posture along the longitudinal direction of the vehicle body, the connecting wall 10 of the bracket 5 a side 21 in the width direction of the frame F of the car body side mounting The bolt is fixed with a pair of second mounting bolts 39. The head 25T of the screw 25 (corresponding to the lower end of the connecting member) protrudes downward from the bottom surface of the lower frame reinforcing member 52, and the head 25T of the screw 25 (corresponding to the lower end of the connecting member) is the space. Accepted by Department J. Thus, the head 25T of the screw 25 is configured to be received in the space J.

［別実施形態］
前記ピン穴２６が一方の連結部分５５又は他方の連結部分８に形成されていてもよい。前記水抜き用の溝２７は、第１載置部１６の下面１６Ｋと連結部１８の下面１８Ｋと第２載置部１７の下面１７Ｋとの少なくとも一つに形成してあればよい。 [Another embodiment]
The pin hole 26 may be formed in one connecting portion 55 or the other connecting portion 8. The draining groove 27 may be formed in at least one of the lower surface 16K of the first mounting portion 16, the lower surface 18K of the connecting portion 18, and the lower surface 17K of the second mounting portion 17.

空気ばねの平面図Air spring top view 空気ばねの縦断面図Air spring longitudinal section 空気ばねの取付構造を示す平面図Plan view showing the mounting structure of the air spring 空気ばねの取付け構造を示す縦断面図Longitudinal sectional view showing the mounting structure of the air spring 従来の空気ばねの取付構造を示す平面図Plan view showing a conventional air spring mounting structure 従来の空気ばねの取付け構造を示す縦断面図A longitudinal sectional view showing a conventional air spring mounting structure

Explanation of symbols

１ダイヤフラム（壁部）
１Ａダイヤフラムの上端
１Ｂダイヤフラムの下端
２アッパープレート
２ａアッパープレートの上面
２Ｃアッパープレートの周縁部
２Ｇ，２Ｇアッパープレートの外周部
３ピストン
４空気給排孔
５取付ブラケット
６内側の筒部
７外側の筒部
９ダイヤフラムの下端部（下側のダイヤフラム部分）
１０連結壁
１１上壁
１２フレーム載置用プレート
１３，１３支持壁
１４凸部
１５雌ねじ部
１６第１載置部
１６Ｊ第１載置部の上面
１６Ｋ第１載置部の下面
１６Ｔ，１６Ｔ第１載置部の端面（両端面）
１７第２載置部
１７Ｊ第２載置部の上面
１７Ｋ第２載置部の下面
１７Ｔ，１７Ｔ第２載置部の端面（両端面）
１８，１８連結部
１８Ｊ連結部の上面
１８Ｋ連結部の下面
１９第２載置部の中間部
２１車体側のフレームの幅方向の一側面
２２車体側のフレームの底面
２３ボルト挿通孔
２４フレーム補強部材
２５ビス（連結部材）
２５Ｔビスの頭部（連結部材の下端部）
２６ピン穴
２７水抜き用の溝
２８ナット
２９座金
３０第１取付けボルト（取付けボルト）
３８車体側のフレームの下側の壁部
３９第２取付けボルト
４０上側プレート
４１下側プレート
４２フレーム載置用ブロック
５０突出部
５１上側フレーム補強部材（フレーム補強部材）
５２下側フレーム補強部材（フレーム補強部材）
５５連結部分（一方の連結部分）
５６連結部分（他方の連結部分）
Ａ空気ばね
Ｂ上下方向
Ｄ車体側のフレーム長手方向
Ｅ車体側のフレームの長手方向に沿う方向
Ｆ車体側のフレーム
Ｆ１車体側のフレームの幅方向一方側の第１フレーム部分
Ｆ２車体側のフレームの幅方向他方側の第２フレーム部分
Ｈ幅方向外方側
Ｊ空間部
Ｏダイヤフラムの軸心
Ｐピン
Ｓ１第１空間（気体室）
Ｓ２第２空間（気体室）
Ｕ上方
Ｗ車体側のフレームの幅方向 1 Diaphragm (wall)
1A Diaphragm upper end 1B Diaphragm lower end 2 Upper plate 2a Upper plate upper surface 2C Upper plate peripheral edge 2G, 2G Upper plate outer peripheral part 3 Piston 4 Air supply / discharge hole 5 Mounting bracket 6 Inner cylinder part 7 Outer cylinder part 9 Lower end of diaphragm (lower diaphragm part)
DESCRIPTION OF SYMBOLS 10 Connection wall 11 Upper wall 12 Frame mounting plates 13 and 13 Support wall 14 Convex part 15 Female thread part 16 First mounting part 16J Upper surface 16K of the first mounting part Lower surfaces 16T and 16T of the first mounting part End surface of mounting part (both end surfaces)
17 2nd mounting part 17J Upper surface 17K of 2nd mounting part Lower surface 17T of 2nd mounting part, 17T End surface (both end surfaces) of 2nd mounting part
18, 18 Connecting portion 18J Upper surface 18K of connecting portion Lower surface 19 of connecting portion Intermediate portion 21 of second mounting portion One side surface 22 in frame width of vehicle body side Bottom surface 23 of frame on vehicle body side Bolt insertion hole 24 Frame reinforcing member 25 screw (connecting member)
25T Screw head (lower end of connecting member)
26 Pin hole 27 Drain groove 28 Nut 29 Washer 30 First mounting bolt (mounting bolt)
38 Lower wall portion 39 on the vehicle body side frame 39 Second mounting bolt 40 Upper plate 41 Lower plate 42 Frame mounting block 50 Projection portion 51 Upper frame reinforcing member (frame reinforcing member)
52 Lower frame reinforcement member (frame reinforcement member)
55 Connecting part (one connecting part)
56 Connecting part (the other connecting part)
A Air spring B Vertical direction D Longitudinal frame direction E on the vehicle body side Direction F along the longitudinal direction of the frame on the vehicle body side Frame F1 on the vehicle body side First frame portion F2 on one side in the width direction of the vehicle body side frame Second frame portion H on the other side in the width direction Outer side in the width direction J Space portion O Axis center of the diaphragm P Pin S1 First space (gas chamber)
S2 Second space (gas chamber)
U Upper W Body frame width direction

Claims

A cylindrical diaphragm constituting the wall of the gas chamber, a disk-like upper plate fixed to the upper end of the diaphragm, a piston fixed to the lower end of the diaphragm, and an installation erected on the upper plate A bracket, and the mounting bracket is provided with a vertical wall-like connecting wall that is connected to one side in the width direction of the frame on the vehicle body side that is rectangular in plan view,
A frame mounting plate made of aluminum alloy interposed between the upper surface of the upper plate and the bottom surface of the frame on the vehicle body side, the frame mounting plate having a first frame portion on one side in the width direction; From the first placement portion to be placed, the second placement portion to place the second frame portion on the other side in the width direction, and the connecting portion that connects the first placement portion and the second placement portion. And both end surfaces of the first mounting portion and both end surfaces of the second mounting portion in the direction along the longitudinal direction of the frame on the vehicle body side are located on the outer peripheral side of the upper plate, and the connecting portion is The intermediate portion of the second mounting portion in the direction along the longitudinal direction protrudes toward the outer peripheral side of the upper plate. Formed in a square shape And a bolt insertion hole through which a mounting bolt for connecting the projection to the upper plate is configured such that the projection of the intermediate portion is positioned on the outer side in the width direction with respect to the frame on the vehicle body side. Is formed in the projecting portion, and a lower end portion of a connecting member that connects the vehicle body side frame and the frame reinforcing member in the vertical direction is formed by the first mounting portion, the second mounting portion, and a pair of connecting portions. A pin hole is formed to be received in the enclosed space, and a pin for inserting a rotation-preventing pin with respect to the upper plate is formed in one of the first mounting portion, the one connecting portion, and the other connecting portion. Air springs.

The first mounting portion, the second mounting portion, and the connecting portion are set to the same thickness, and the upper surfaces of the first mounting portion, the second mounting portion, and the connecting portion are in the same position in the vertical direction. And the lower surfaces of the first mounting portion, the second mounting portion, and the connecting portion are positioned at the same position in the vertical direction, and at least the first mounting portion, the second mounting portion, and the connecting portion The air spring according to claim 1, wherein a water draining groove for discharging water accumulated in the space is formed on one lower surface.

3. The air spring according to claim 1, wherein the periphery of the upper plate is caulked and fixed to the upper end of the diaphragm so that the upper end of the diaphragm is wrapped from above at the periphery of the upper plate.