JP2005247108A - Suspension device - Google Patents

Suspension device Download PDF

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Publication number
JP2005247108A
JP2005247108A JP2004059208A JP2004059208A JP2005247108A JP 2005247108 A JP2005247108 A JP 2005247108A JP 2004059208 A JP2004059208 A JP 2004059208A JP 2004059208 A JP2004059208 A JP 2004059208A JP 2005247108 A JP2005247108 A JP 2005247108A
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space
suspension device
piston member
bottomed cylindrical
air
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Hiroaki Kawasaki
裕章 川崎
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Sumitomo Rubber Industries Ltd
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Sumitomo Rubber Industries Ltd
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Priority to JP2004059208A priority Critical patent/JP2005247108A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/027—Mechanical springs regulated by fluid means
    • B60G17/0272—Mechanical springs regulated by fluid means the mechanical spring being a coil spring

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suspension device facilitating the adjustment of car height, while enabling the suspension device to be mounted easily in spite of the presence of a protruding member on the vehicle body side. <P>SOLUTION: A bottomed cylindrical member 11 formes a space part C opening upward. A piston member 4 is fitted inside the space part C of the bottomed cylindrical member 11. A fluid housing empty chamber part E is formed between the piston member 4 and a bottom wall part 5 of the bottomed cylindrical member 11. A coil spring 3 is arranged on an upper surface 9 side of the piston member 4 in series. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、自動車の車輪懸架装置に関する。   The present invention relates to an automobile wheel suspension system.

従来、本発明者等は、車高の調整が容易で、乗心地を向上させるために、コイルスプリングとエアスプリングを直列的に配置した懸架装置について種々の提案を行ってきた（例えば、下記の特許文献１、特許文献２参照）。さらに、本発明者等は、図６に示すように、コイルスプリング31とエアスプリング32及び機械的な高さ調整自在なアダプタ33を、直列的に配設して、車体34と車軸（連結アーム）35側との間に介装した懸架装置についても、特願2002−201343として、提案している。
特開２００３−１４６０４２号公報 特開２００１−１２１９３６号公報 Conventionally, the present inventors have made various proposals on a suspension device in which a coil spring and an air spring are arranged in series in order to easily adjust the vehicle height and improve riding comfort (for example, (See Patent Document 1 and Patent Document 2). Further, as shown in FIG. 6, the present inventors arrange a coil spring 31, an air spring 32, and an adapter 33 with adjustable mechanical height in series so that a vehicle body 34 and an axle (a connecting arm) ) We have also proposed a suspension system installed between the 35 side as Japanese Patent Application 2002-201343.
JP 2003-146042 A JP 2001-121936 A

従来の懸架装置は、図６に例示するように、車体34側の取付部34Ａが平坦面状であれば、取付作業において、問題がなかった。即ち、例えばホンダ製のステップワゴン等では、上記取付部34Ａは平坦面状（フラット）であったので、アダプタ33の上端をボルト36等によって取着することはできた。   As illustrated in FIG. 6, the conventional suspension device has no problem in the mounting operation if the mounting portion 34 </ b> A on the vehicle body 34 side is a flat surface. That is, for example, in the step wagon made by Honda, the mounting portion 34A has a flat surface shape (flat), so that the upper end of the adapter 33 can be attached by the bolt 36 or the like.

しかしながら、車種によっては、図５に示すように（元来の）コイルスプリング37の中に張り出した（突入した）突起部材38が、車体34側に形成されている場合がある。（なお、この突起部材38はバンプラバー39を下端に付設する役目をなしている。）
この図５に示した突起部材38が、懸架装置の取付部34Ａに存在する場合、上述した図６のような従来の懸架装置───コイルスプリング31とエアスプリング32とアダプタ33を直列的に配置した懸架装置───を、装着できない。 However, depending on the vehicle model, as shown in FIG. 5, a protruding member 38 that protrudes (enters) into the (original) coil spring 37 may be formed on the vehicle body 34 side. (The protruding member 38 serves to attach the bump rubber 39 to the lower end.)
When the projecting member 38 shown in FIG. 5 is present in the attachment portion 34A of the suspension device, the conventional suspension device as shown in FIG. 6 described above—the coil spring 31, the air spring 32, and the adapter 33 are connected in series. I cannot install the suspension system that I placed.

あえて、図６に示した懸架装置、あるいは前記特許文献１，２の懸架装置を、装着せんとすれば、図５に例示の突起部材38を根元（上端）から切断して、さらに孔部を溶接等にて塞いでから取付けねばならなくなり、その切断作業及び取付（溶接）作業が極めて面倒で手間が掛かり、さらに、車体34の剛性が低下する等の弊害も生ずる。   If the suspension device shown in FIG. 6 or the suspension device of Patent Documents 1 and 2 is installed, the protrusion member 38 illustrated in FIG. 5 is cut from the root (upper end), and the hole is further formed. Since it must be attached after it is closed by welding or the like, the cutting operation and attachment (welding) operation are extremely troublesome and time-consuming, and there is also a problem that the rigidity of the vehicle body 34 is lowered.

そこで、本発明は、車体側にこのような突起部材が存在した車両に対して、車体側を切断したり、溶接したりすることなく、エアシリンダ（エアスプリング）とコイルスプリングとを直列的に備えていても、容易に装着可能な懸架装置を提供することを、目的とする。さらに、車高を容易に変化させることを可能として、高速走行安定性を確保し、他方、悪路（地道）走行時には十分な車高を確保する等が可能な懸架装置を提供することを他の目的としている。さらに、エアシリンダ型の密封空室部のシール耐久性に優れ、かつ、その加工が容易で製作しやすい構造のものを提供することを、別の目的とする。   Therefore, the present invention provides an air cylinder (air spring) and a coil spring connected in series to a vehicle having such a protruding member on the vehicle body side without cutting or welding the vehicle body side. An object of the present invention is to provide a suspension device that can be easily mounted even if it is provided. Furthermore, it is possible to easily change the vehicle height, to ensure a high-speed running stability, and to provide a suspension device that can secure a sufficient vehicle height when traveling on rough roads (land roads). The purpose is. It is another object of the present invention to provide a structure that is excellent in sealing durability of an air cylinder type sealed vacant space, that is easy to process and easy to manufacture.

そこで、本発明に係る懸架装置は、上方開口状の空間部を形成する有底筒形部材を備え、該有底筒形部材の上記空間部内にピストン部材を装着して、上記空間部内に於て、上記有底筒形部材の底壁部と上記ピストン部材との間に流体収納空室部を形成し、さらに、上記ピストン部材の上面側に直列的にコイルスプリングを配設したものである。
また、上記流体収納空室部内にエアを密封状に収納してエアシリンダを構成すると共に該エアを出し入れして車高を調整するように構成した。あるいは、上記流体収納空室部内にオイルを出し入れして車高を調整するように構成した。
そして、上記有底筒形部材の周壁部の内面が、上記ピストン部材よりも上方位置で露出するのを遮蔽する可撓性乃至弾性を有するダストカバー部材を付設した構造とする。 Therefore, the suspension device according to the present invention includes a bottomed cylindrical member that forms a space portion having an upper opening, and a piston member is mounted in the space portion of the bottomed cylindrical member so that the space portion has a space. In addition, a fluid storage cavity is formed between the bottom wall of the bottomed tubular member and the piston member, and a coil spring is further arranged in series on the upper surface side of the piston member. .
Further, the air is sealed in the fluid housing space to form an air cylinder, and the air is taken in and out to adjust the vehicle height. Alternatively, the vehicle height is adjusted by putting oil into and out of the fluid housing empty space.
And it is set as the structure which attached the dust cover member which has flexibility thru | or elasticity which shields that the inner surface of the surrounding wall part of the said bottomed cylindrical member is exposed in the upper position rather than the said piston member.

本発明は、次のような著大な効果を奏する。
車体側に突起部材が存在している車種であっても、車体側を切断や溶接することなく、流体圧シリンダ（エアシリンダ）を具備した懸架装置を、装着することが可能となった。そして、突起部材が存在している車種に（上述のように）そのまま懸架装置を装着できるにかかわらず、その構造が簡易で、製作が比較的に安価かつ容易であって、流体圧シリンダから流体が外部漏洩する危険性を低減して、密封耐久性にも優れる。
また、高速走行時には車高をやや低目に設定して安定して走行することができ、悪路等を走行するときには車高を高目に設定する等のように、車高変更を容易に変更可能となる。 The present invention has the following remarkable effects.
Even in a vehicle type in which a protruding member exists on the vehicle body side, it is possible to mount a suspension device including a fluid pressure cylinder (air cylinder) without cutting or welding the vehicle body side. Even if the suspension device can be mounted as it is on the vehicle type in which the protruding member exists (as described above), the structure is simple, the manufacturing is relatively inexpensive and easy, and the fluid pressure cylinder Reduces the risk of leakage to the outside and has excellent sealing durability.
In addition, the vehicle height can be set to a slightly low level when driving at high speeds, and the vehicle height can be set to a high level when driving on rough roads. It can be changed.

以下、図示の実施の形態に基づき本発明を詳説する。
図１に於て、本発明に係る自動車の車輪懸架装置の実施の一形態を示し、この懸架装置１は、コイルスプリング３と流体圧シリンダ２とを直列的に配設したものであり、自動車の車体34と車軸35の間に装着されている。
具体的には、上記流体圧シリンダ２は、上方開口状の短円柱形空間部Ｃを形成する有底筒形部材11と、その空間部Ｃ内に装着された円盤（板）状ピストン部材４を備えている。この有底（円）筒形部材11は、軸心Ｌと直交する方向───軸心直交方向───の円形板状底壁部５と、円筒形の周壁部７とから成る。 Hereinafter, the present invention will be described in detail based on the illustrated embodiment.
FIG. 1 shows an embodiment of an automobile wheel suspension system according to the present invention. This suspension system 1 includes a coil spring 3 and a fluid pressure cylinder 2 arranged in series. The vehicle body 34 and the axle 35 are mounted.
Specifically, the fluid pressure cylinder 2 includes a bottomed cylindrical member 11 that forms a short cylindrical space C having an upper opening, and a disk (plate) piston member 4 mounted in the space C. It has. The bottomed (circular) cylindrical member 11 is composed of a circular plate-shaped bottom wall portion 5 in a direction orthogonal to the axis L, and a direction perpendicular to the axis, and a cylindrical peripheral wall portion 7.

そして、この有底筒形部材11の空間部Ｃ内に於て、底壁部５とピストン部材４との間に、流体収納空室部Ｅが形成される。つまり、空間部Ｃの下部側には、流体収納空室部Ｅが形成され、空間部Ｃの上部側は上方開口状の上半空間が残り、その上方開口状の上半空間に、コイルスプリング３の下半部位が挿入状となって、組立てられる。
即ち、ピストン部材４の下面８側に流体収納空室部Ｅが形成され、ピストン部材４の上面９側に上方開口状の上半空間が形成され、このピストン部材４の上面９側に、直列的にコイルスプリング３が配設される。 Then, in the space C of the bottomed cylindrical member 11, a fluid storage empty chamber E is formed between the bottom wall 5 and the piston member 4. In other words, a fluid storage vacant space E is formed on the lower side of the space C, and the upper half space of the upper opening remains on the upper side of the space C, and the coil spring is placed in the upper half space of the upper opening. The lower half of 3 is inserted and assembled.
That is, the fluid housing empty space E is formed on the lower surface 8 side of the piston member 4, and the upper half space of the upper opening shape is formed on the upper surface 9 side of the piston member 4. In particular, a coil spring 3 is provided.

６は、ダストカバー部材であり、有底筒形部材11の周壁部７の内面７ａが、ピストン部材４よりも上方位置で外部へ露出するのを遮蔽（被覆）するものであって、弾性を有するゴム材や軟質プラスチック材とし、あるいは、可撓性を有するように蛇腹状のプラスチック材等とする。
コイルスプリング３の上端は車体34のアッパーマウント20にて受けられ（当接し）、下端はピストン部材４の上面９の最も深い面に当接している。コイルスプリング３の軸心は前述の軸心Ｌに一致する。そして、ピストン部材４の上面９側に直列的にコイルスプリング３を配設して、流体圧シリンダ２とコイルスプリング３を直列的に配設するが、本発明では、「直列的」とは、車体34側と車軸35の間の力の伝達が、一方のみを介して伝達されることが無く、必ず両者を介して伝達される配置を言うものと、定義する。 A dust cover member 6 shields (covers) the inner surface 7a of the peripheral wall 7 of the bottomed cylindrical member 11 from being exposed to the outside at a position higher than the piston member 4, and is elastic. A rubber material or a soft plastic material, or a bellows-like plastic material so as to have flexibility.
The upper end of the coil spring 3 is received (contacted) by the upper mount 20 of the vehicle body 34, and the lower end is in contact with the deepest surface of the upper surface 9 of the piston member 4. The axis of the coil spring 3 coincides with the axis L described above. Then, the coil spring 3 is arranged in series on the upper surface 9 side of the piston member 4 and the fluid pressure cylinder 2 and the coil spring 3 are arranged in series. In the present invention, “in series” It is defined that the transmission of force between the vehicle body 34 side and the axle 35 is not transmitted via only one, but is always transmitted via both.

図１に於て、有底筒形部材11に継手10を介して流体配管12が接続される。上記流体収納空室部Ｅ内には好ましくはエアを密封することで、流体圧シリンダ２はエアシリンダ（エアスプリング）２Ａを構成することとなる。なお、流体収納空室部Ｅ内にエアを密封状に収納してエアシリンダ２Ａを構成してエアを出し入れ自在に、（図外の）切換弁類とエアタンク・コンプレッサ等と上記流体配管12を介して接続し、エアの出し入れによって、車高を調整するようにするのが望ましい。
また、流体収納空室部Ｅ内にオイルを出し入れ自在に、（図外の）切換弁類とポンプ等に上記流体配管12を介して接続し、オイルの出し入れによって車高を調整するように構成するも自由である。 In FIG. 1, a fluid pipe 12 is connected to a bottomed cylindrical member 11 via a joint 10. The fluid pressure cylinder 2 constitutes an air cylinder (air spring) 2A by preferably sealing air in the fluid housing empty space E. In addition, air is hermetically stored in the fluid storage space E to form an air cylinder 2A so that air can be freely taken in and out (not shown) with switching valves, air tank / compressor, etc., and the fluid pipe 12 above. It is desirable to adjust the vehicle height by connecting and disconnecting air.
In addition, oil can be freely taken into and out of the fluid storage empty space E, and is connected to a switching valve (not shown) and a pump through the fluid pipe 12 to adjust the vehicle height by taking in and out the oil. It is also free to do.

そして、図１に示すように、直列的に配設された上述の流体圧シリンダ２（のピストン部材４）とコイルスプリング３とは、独立して緩衝装置（ショックアブソーバ）13が配設（並設）されている。車体34から垂下状の突起部材38が存在しているが、この突起部材38は、その軸心が上記軸心Ｌと一致して垂設され、コイルスプリング３及び空間部Ｃ内に突入し、収納されている。なお、ピストン部材４は、肉薄の下壁部４ａと、その周縁から起立した円周壁部４ｂとを、有し、有底筒形部材11の周壁部７の内面７ａとの摺接面圧を低減し、かつ、安定姿勢で上下摺動するよう───かじり等を生じないよう───円周壁部４ｂにて上下高さ寸法を確保している。従って、ピストン部材４には上方開口状の凹窪部14が形成され、この凹窪部14内へ、突起部材38の下端が突入している場合を、図１では、示している。なお、図例では、バンプラバー39が突起部材38の下端に付設され、このバンプラバー39がピストン部材４の凹窪部14内へ突入している。なお、20はアッパーマウントを示す。   As shown in FIG. 1, the above-described fluid pressure cylinder 2 (the piston member 4) and the coil spring 3 arranged in series are independently provided with a shock absorber (shock absorber) 13. It is). A projecting member 38 that hangs down from the vehicle body 34 is present, and the projecting member 38 has its axial center that is vertically aligned with the axial center L, and projects into the coil spring 3 and the space C. It is stored. The piston member 4 has a thin lower wall portion 4a and a circumferential wall portion 4b rising from the peripheral edge thereof, and the sliding contact surface pressure with the inner surface 7a of the circumferential wall portion 7 of the bottomed tubular member 11 is set. Sliding up and down in a stable posture ───Preventing galling etc.─── The vertical height is secured at the circumferential wall 4b. Therefore, the piston member 4 is formed with a concave portion 14 having an upper opening shape, and FIG. 1 shows a case where the lower end of the projecting member 38 enters the concave portion 14. In the illustrated example, a bump rubber 39 is attached to the lower end of the protruding member 38, and the bump rubber 39 protrudes into the recessed portion 14 of the piston member 4. Reference numeral 20 denotes an upper mount.

この図１と図５とを対比すれば明らかなように、本発明に係る懸架装置１では、流体圧シリンダ２内に、上方開口状空間を有しており、突起部材38が突入可能な構成であるので、改造前の（既設の）コイルスプリング37等を取外して簡単に本発明に係る懸架装置を取付け可能である。つまり、既設の突起部材38を根元（上方基端）から切断する等の面倒な作業を行わずに、図１に示すように、改造を容易に可能である。勿論、突起部材38を切断した後に、カバー材を施蓋するための従来の溶接作業も省略できる。   As apparent from comparison between FIG. 1 and FIG. 5, the suspension device 1 according to the present invention has an upper opening space in the fluid pressure cylinder 2 so that the protruding member 38 can enter. Therefore, it is possible to easily attach the suspension device according to the present invention by removing the coil spring 37 (existing) before the modification. That is, the modification can be easily performed as shown in FIG. 1 without performing troublesome work such as cutting the existing protruding member 38 from the base (upper base end). Of course, the conventional welding operation for covering the cover material after cutting the protruding member 38 can be omitted.

図２は、図１に適用される（円盤状の）ピストン部材４の拡大断面図を示し、また、図３は図１の要部拡大図であるが、この図２と図３に於て、ピストン部材４及びダストカバー部材６等につき、さらに具体的に説明する。下壁部４ａは強度的に許容される限り肉厚を薄く形成して、（凹窪部14を深く設定して、）突起部材38が十分深く（下方へ）突入可能とする。凹窪部14は下方小径部14ａと上方大径部14ｂとから成り、そのために、円筒壁部４ｂは上下方向中間位置に段付面部15を形成して、円筒壁部４ｂの下半部は肉厚大とし、上半部は肉厚小に設定する。   2 is an enlarged cross-sectional view of the (disc-shaped) piston member 4 applied to FIG. 1, and FIG. 3 is an enlarged view of the main part of FIG. 1, in FIG. 2 and FIG. The piston member 4 and the dust cover member 6 will be described more specifically. The lower wall portion 4a is formed to be as thin as possible in terms of strength, so that the protruding member 38 can enter sufficiently deep (downward) (by setting the recessed portion 14 deep). The concave recess portion 14 is composed of a lower small diameter portion 14a and an upper large diameter portion 14b. For this purpose, the cylindrical wall portion 4b forms a stepped surface portion 15 at an intermediate position in the vertical direction, and the lower half portion of the cylindrical wall portion 4b is The wall thickness should be large and the upper half should be small.

コイルスプリング３の下端を、この下方小径部14ａの内周面と、下壁部４ａの上面との隅部16にて受けるように、コイルスプリング３の下端を下方小径部14ａに嵌装する。また、17は、ダストカバー部材６の下端縁を上方大径部14ｂに固着するための固着リングである。固着リング17は、例えば閉環状又は１箇所切り目のある環状として、圧入することで、この固着リング17と、ピストン部材４の上方大径部14ｂの内周面との間に、ダストカバー部材６の下端縁を挾着する。なお、予め接着や溶着等でダストカバー部材６の下端縁を、固着リング17に一体状として連結しておいて、その固着リング17を、ネジや圧入等でピストン部材４に、固定するも自由である。   The lower end of the coil spring 3 is fitted to the lower small-diameter portion 14a so that the lower end of the coil spring 3 is received by the corner 16 between the inner peripheral surface of the lower small-diameter portion 14a and the upper surface of the lower wall portion 4a. Reference numeral 17 denotes a fixing ring for fixing the lower end edge of the dust cover member 6 to the upper large diameter portion 14b. The fixing ring 17 is press-fit as, for example, a closed ring or a ring having one cut, so that the dust cover member 6 is interposed between the fixing ring 17 and the inner peripheral surface of the upper large diameter portion 14b of the piston member 4. Attach the lower edge of In addition, the lower end edge of the dust cover member 6 is connected to the fixing ring 17 integrally by adhesion or welding in advance, and the fixing ring 17 can be fixed to the piston member 4 with a screw or press fit. It is.

そして、ダストカバー部材６の上端縁は、２個のネジ付きリング18, 19にて、有底筒形部材11の上方内周端縁11ａに固着（保持）されており、ピストン部材４の上下摺動位置にかかわらず、常に周壁面７の内面７ａは、外部へ露出せず、遮蔽されている。つまり、上方内周端縁11ａに雌ネジ部21を形成し、その雌ネジ部21に順次螺合するネジ付きリング18, 19にてダストカバー部材６の上端縁を挾着して保持して、後述のピストン部材４のシール類（パッキン類）や摺動部材への粉塵・異物───ダスト───の侵入・接触を、防止している。なお、下方のネジ付きリング18はピストンストッパの役目を兼ねる。
なお、ダストカバー部材６の上端縁の固着構造としては、図示の具体例以外に、例えば、下端縁の固着リング17と同様の構造を適用するも、好ましく、あるいは、予め、接着や溶着等でダストカバー部材６の上端縁に、一体状に連結したリングを、ネジや圧入等で、ピストン部材４の上端縁に、固定するも、自由である（図示省略）。 The upper end edge of the dust cover member 6 is fixed (held) to the upper inner peripheral edge 11a of the bottomed cylindrical member 11 by two threaded rings 18 and 19, and the upper and lower sides of the piston member 4 are Regardless of the sliding position, the inner surface 7a of the peripheral wall surface 7 is always shielded without being exposed to the outside. That is, a female screw portion 21 is formed on the upper inner peripheral edge 11a, and the upper end edge of the dust cover member 6 is attached and held by threaded rings 18 and 19 that are sequentially screwed into the female screw portion 21. Intrusion and contact of dust and foreign matter --- dust-to the seals (packings) and sliding members of the piston member 4 described later are prevented. The lower threaded ring 18 also serves as a piston stopper.
As the fixing structure of the upper end edge of the dust cover member 6, for example, the same structure as that of the fixing ring 17 at the lower end edge may be applied other than the specific example shown in the figure. A ring integrally connected to the upper end edge of the dust cover member 6 may be fixed to the upper end edge of the piston member 4 with a screw or press fit (not shown).

次に、ピストン部材４の外周面には、図例では、３本の凹周溝22, 23, 24が形成され、上方の凹周溝22には、ゴム又はプラスチック製のダストシール（ダストスクレーパ）25、下方の凹周溝24にはＵパッキンや角形パッキンやＯリング等のシール材27が嵌着され、かつ、中間位置の（上下幅の大きい）凹周溝23には摺動部材（摺り軸受）26が嵌着される。この摺動部材26は、低摩擦かつ耐摩耗性の材質から成り、例えばフェレール樹脂製のウェアリング等を挙げることができ、周壁部７の内面７ａに摺動自在に接触する。なお、凹周溝22, 24とシール材の増減は自由であり、また、摺動部材26を省略して、ピストン部材４自体、又は、その外周面のみを、摩擦抵抗が小さく摺り易い材質とするも、自由である（図示省略）。   Next, in the illustrated example, three concave circumferential grooves 22, 23, 24 are formed on the outer peripheral surface of the piston member 4, and a rubber or plastic dust seal (dust scraper) is formed in the upper concave circumferential groove 22. 25, a sealing material 27 such as a U-packing, a square packing, an O-ring, or the like is fitted in the lower circumferential groove 24, and a sliding member (sliding member) is placed in the middle circumferential groove (large vertical width). A bearing 26 is fitted. The sliding member 26 is made of a material having low friction and wear resistance, and can include, for example, a wear ring made of ferrail resin, and slidably contacts the inner surface 7a of the peripheral wall portion 7. The concave and circumferential grooves 22 and 24 and the seal material can be freely increased or decreased, and the sliding member 26 is omitted, and the piston member 4 itself or only the outer peripheral surface thereof is made of a material having a small frictional resistance and easy to slide. However, it is free (not shown).

上述したように、本発明では、車体34側に（邪魔な）突起部材38が存在する場合にも、容易に取付可能な懸架装置であるが、仮にこのような突起部材38の無い車種の場合には、ピストン部材４の上面９側の空間部Ｃを活用し、（コイスルプリング３内に、）別の小径コイルスプリングを収納したり、ショックアブソーバを収納（内装）したり、その他、サスペンション特性を改善するために、別の流体圧シリンダや各種センサ類を、収納（内装）するも好ましい（図示省略）。   As described above, according to the present invention, the suspension device can be easily attached even when the (obstructive) protruding member 38 is present on the vehicle body 34 side. However, in the case of a vehicle type without such a protruding member 38, For example, the space C on the upper surface 9 side of the piston member 4 is utilized to house another small-diameter coil spring (in the coil spring ring 3), a shock absorber (interior), and other suspensions. In order to improve the characteristics, it is preferable to house (internally) another fluid pressure cylinder and various sensors (not shown).

図１〜図３に於て、流体として（圧縮性のある）エアを用いる場合、矢印Ｇ方向にエアを送って流体収納空室部Ｅ内に供給すると、車高を増大させることができる。逆に、矢印Ｇと逆方向へエアを排出すれば、車高を低下させることができる。   1 to 3, when air (compressible) is used as a fluid, the vehicle height can be increased by supplying the air in the direction of arrow G and supplying it into the fluid housing empty space E. Conversely, if air is discharged in the direction opposite to arrow G, the vehicle height can be reduced.

エアを用いる上述の場合、コイルスプリング３とエアシリンダ２Ａ（流体収納空室部Ｅ）とは直列的に配置されている。図示省略するが、エアシリンダ２Ａへの加圧エアの供給は、コンプレッサから、ドライヤ、エアタンク、電磁弁、レギュレーター等を介して行われ、運転席のスイッチにて、電磁弁を開閉させることで、又は機械式切換弁にて、エアシリンダ２Ａへの加圧エアの出し入れを行うようにする。また、コンプレッサの電源は、バッテリーより供給する。   In the above-described case using air, the coil spring 3 and the air cylinder 2A (fluid storage space E) are arranged in series. Although not shown, pressurized air is supplied to the air cylinder 2A from the compressor via a dryer, an air tank, a solenoid valve, a regulator, and the like. By opening and closing the solenoid valve with a switch on the driver's seat, Alternatively, the pressurized air is taken in and out of the air cylinder 2A by a mechanical switching valve. The compressor power is supplied from a battery.

エアシリンダ２Ａの発生力Ｆは、エアシリンダ２Ａの内圧Ｐと、エアシリンダ２Ａの受圧有効面積Ｓとの間に、次式の関係が成り立つ。
Ｆ＝Ｐ×Ｓ
従って、発生力Ｆは、空気の圧力（内圧Ｐ）に比例するので、数値化され易く、確実に所定の車高に変化できる。 The generated force F of the air cylinder 2A has the following relationship between the internal pressure P of the air cylinder 2A and the effective pressure receiving area S of the air cylinder 2A.
F = P × S
Therefore, since the generated force F is proportional to the air pressure (internal pressure P), it can be easily converted into a numerical value and reliably changed to a predetermined vehicle height.

次に、本発明の他の実施の形態について説明すると、流体収納空室部Ｅ内に（図示省略の）車載油圧ポンプと油圧弁類に配管12等を介して、非圧縮性流体として、オイルを供給して、ピストン部材４を上昇・下降させて、車高を調整することも、容易に行い得る。運転中に運転席のスイッチやレバー等によって、電磁弁や手動切換弁を、開閉（切換）して、油圧ポンプからの加圧オイルを矢印Ｇ方向に供給して車高を増加し、逆に、流体収納空室部Ｅ内のオイルをタンクへリターンさせて、車高を下げることが（容易に）できる。   Next, another embodiment of the present invention will be described. An oil as an incompressible fluid is provided in an in-vehicle hydraulic pump and a hydraulic valve (not shown) through a pipe 12 etc. To adjust the vehicle height by raising and lowering the piston member 4. During operation, the solenoid valve and the manual switching valve are opened and closed (switched) with the switch and lever of the driver's seat, and the pressurized oil from the hydraulic pump is supplied in the direction of arrow G to increase the vehicle height. The oil in the fluid storage empty space E can be returned to the tank to reduce the vehicle height (easily).

ところで、図４に於て、本発明者が既に（特願２００３−３６４５１０として）提案した懸架装置を示す要部断面図であり、この図４に示す比較例では、上下一方向に開口状の円筒形空間部Ｃ′を形成する、内筒部46と外筒部47と軸心直交方向の壁部45とから成る中空筒形部材41を、備え、該中空筒形部材41の上記円筒形空間部Ｃ′内に円環状ピストン44を装着して、上記円筒形空間部Ｃ′内に於て上記壁部45と該ピストン44の内面48との間に流体収納空室部Ｅ′を形成し、さらに、上記ピストン44の外面49側に直列的にコイルスプリング43を配設した構成である。この図４の比較例でも、元々の車体34側に突起部材38等の邪魔な部材が存在していても（そのまま残して）、容易に装着できる構造である。即ち、突起部材38を、内筒部46の内部に形成された内空間部Ｂ内へ、突入することで、懸架装置と突起部材38との干渉を避けて、懸架装置を、装着できる。この点で、本発明と共通の作用・効果が奏せられる。   Incidentally, in FIG. 4, the present inventor has already proposed (as Japanese Patent Application No. 2003-364510) a cross-sectional view showing a main part, and in the comparative example shown in FIG. A hollow cylindrical member 41 comprising an inner cylindrical portion 46, an outer cylindrical portion 47, and a wall portion 45 in a direction orthogonal to the axial center, which forms a cylindrical space C ', and the cylindrical shape of the hollow cylindrical member 41 An annular piston 44 is mounted in the space C ′, and a fluid storage chamber E ′ is formed between the wall 45 and the inner surface 48 of the piston 44 in the cylindrical space C ′. Further, the coil spring 43 is arranged in series on the outer surface 49 side of the piston 44. The comparative example of FIG. 4 also has a structure that can be easily mounted even if a disturbing member such as the protruding member 38 exists on the original body 34 side (leave it as it is). That is, the projecting member 38 is inserted into the inner space B formed inside the inner cylinder portion 46, so that the suspension device can be mounted while avoiding interference between the suspension device and the projecting member 38. In this respect, the same operations and effects as the present invention can be achieved.

しかし、この比較例の構造では、密封箇所が内周側シール部51及び外周側シール部52の（合計）２箇所を要する。従って、図１〜図３で述べた本願発明と比較すれば、以下のような問題点が残されている。（イ）シールパッキンやダストシール等の部品が２倍必要となり、コストアップする。（ロ）流体の外部漏洩の危険性が２倍となる。（ハ）シールパッキン等の摺動面に相当する、内筒部46外面と外筒部47内面を、ホーニング仕上げ等の精密加工せねばならないので加工が極めて難しく、製造が容易でない。（ニ）ダストシール等の負荷を低減するために図１のようなダストカバー部材６を付設することが困難な構造である。   However, in the structure of this comparative example, two (total) sealing locations are required, that is, the inner peripheral side seal portion 51 and the outer peripheral side seal portion 52. Therefore, the following problems remain when compared with the present invention described in FIGS. (B) Parts such as seal packing and dust seal are required twice, which increases costs. (B) The risk of external leakage of fluid is doubled. (C) Since the outer surface of the inner tube portion 46 and the inner surface of the outer tube portion 47 corresponding to the sliding surfaces of seal packing and the like must be precisely processed such as honing finish, the processing is extremely difficult and the manufacture is not easy. (D) It is a structure in which it is difficult to attach a dust cover member 6 as shown in FIG. 1 in order to reduce a load such as a dust seal.

これに対し、本願発明では、（図１〜図３からも明らかなように、）密封箇所が半減でき、シール材27・ダストシール25の必要数が半分となりコストダウンを図ることが可能であり、流体の外部漏洩の危険性も低減でき、さらに、ホーニング加工等の精密加工箇所も減少でき、かつ、その加工も容易である、という著大な効果が発揮される。さらに、比較例では付設が難しかったダストカバー部材６を付設可能であるので、使用環境の劣悪な懸架装置に於て、異物（粉塵等）がダストシール等のある密封部位に侵入するのを防止できる。   On the other hand, in the present invention (as is clear from FIGS. 1 to 3), the sealing location can be halved, and the required number of sealing materials 27 and dust seals 25 can be halved to reduce the cost. The risk of external leakage of the fluid can be reduced, and the number of precision machining locations such as honing can be reduced and the machining can be easily performed. Furthermore, since it is possible to attach the dust cover member 6 that was difficult to attach in the comparative example, it is possible to prevent foreign matter (dust etc.) from entering a sealed part such as a dust seal in a suspension device having a poor operating environment. .

なお、本発明に於けるダストカバー部材６について追加説明すれば、図１〜図３に示すように、流体圧シリンダ２の周壁面７の内面を、外部へ露出することを遮蔽（被覆）することができるので、密封部位（シール部位）に、使用環境の劣悪な車両下面側にて、各種異物が付着・侵入すること、有効に防止できる。特に、ダストシール25等に掛る負荷を低減できる。ダストカバー部材６としては、例えば、ゴム製で伸縮するものが望ましいが、その他、樹脂製で蛇腹状に伸縮するもの等、ピストン部材４が上下往復動したときにその動きに追随して、伸縮し、常時、周壁面７の内面を覆っている（遮蔽している）ものが好ましい。   In addition, if it demonstrates additionally about the dust cover member 6 in this invention, as shown in FIGS. 1-3, it will shield (cover) that the inner surface of the surrounding wall surface 7 of the fluid pressure cylinder 2 is exposed outside. Therefore, it is possible to effectively prevent various foreign substances from adhering to and entering the sealed part (seal part) on the lower surface side of the vehicle having a poor use environment. In particular, the load on the dust seal 25 can be reduced. As the dust cover member 6, for example, a rubber-made one that expands and contracts is desirable, but other materials such as a resin-made one that expands and contracts in a bellows-like manner, the piston member 4 follows its movement when reciprocating up and down, and expands and contracts. However, it is preferable to always cover (shield) the inner surface of the peripheral wall surface 7.

本発明は上述したように、上方開口状の空間部Ｃを形成する有底筒形部材11を備え、該有底筒形部材11の上記空間部Ｃ内にピストン部材４を装着して、上記空間部Ｃ内に於て、上記有底筒形部材11の底壁部５と上記ピストン部材４との間に流体収納空室部Ｅを形成し、さらに、上記ピストン部材４の上面９側に直列的にコイルスプリング３を配設した構成であるので、元々の車体34側に突起部材38等の邪魔な部材が存在していても、そのまま残して、容易に本発明の懸架装置１を、装着可能となった。即ち、上記の邪魔な部材を、上方開口状空間部Ｃの内、ピストン部材４よりも上方の空間に、上方から突入状態で収納できる。   As described above, the present invention includes the bottomed cylindrical member 11 that forms the upper opening-shaped space C, the piston member 4 is mounted in the space C of the bottomed cylindrical member 11, and In the space C, a fluid storage empty space E is formed between the bottom wall 5 of the bottomed cylindrical member 11 and the piston member 4, and further on the upper surface 9 side of the piston member 4. Since the coil springs 3 are arranged in series, the suspension device 1 of the present invention can be easily left even if there is an obstructive member such as the protruding member 38 on the original vehicle body 34 side. It became possible to install. That is, the above-described disturbing member can be accommodated in the upper opening space C above the piston member 4 in a state of entering from above.

また、上記流体収納空室部Ｅ内にエアを密封すれば、圧縮弾性変形自在なエアシリンダ２Ａが形成され、車高調整が容易である。また、上記流体収納空室部Ｅ内にエアを密封状に収納してエアシリンダ２Ａを構成すると共に該エアを出し入れして車高を調整するように構成したので、例えば、高速走行時には、車高を下げて安定走行ができ、他方、悪路走行時には、車高を高くして車体底壁と岩石等との干渉を防ぐことができる。   Further, if air is sealed in the fluid housing empty space E, an air cylinder 2A that can be compressed and elastically deformed is formed, and the vehicle height can be easily adjusted. Further, since the air is sealed in the fluid storage space E to form the air cylinder 2A and the vehicle height is adjusted by taking the air in and out, for example, when driving at high speed, The vehicle can be stably driven at a low height. On the other hand, when traveling on a rough road, the vehicle height can be increased to prevent interference between the bottom wall of the vehicle body and rocks.

あるいは、上記流体収納空室部Ｅ内にオイルを出し入れして車高を調整するように構成したとすれば、従来の図５と同様の特性を保ちつつ、車高を確実かつ迅速に調整することが可能となる。また、図１のように、直列的に配設された上記ピストン部材４とコイルスプリング３とは独立して、緩衝装置13が並設すれば、流体圧シリンダ２とコイルスプリング３の近傍をコンパクトにまとめて、車体34と車軸35の間に架装しやすいという利点がある。   Alternatively, if the vehicle height is adjusted by putting oil into and out of the fluid storage vacant space E, the vehicle height can be adjusted reliably and quickly while maintaining the same characteristics as in FIG. It becomes possible. Further, as shown in FIG. 1, if the shock absorber 13 is arranged in parallel with the piston member 4 and the coil spring 3 arranged in series, the vicinity of the fluid pressure cylinder 2 and the coil spring 3 is compact. In summary, there is an advantage that it is easy to mount between the vehicle body 34 and the axle 35.

また、上記有底筒形部材11の周壁部７の内面７ａが、上記ピストン部材４よりも上方位置で露出するのを遮蔽する可撓性乃至弾性を有するダストカバー部材６を付設した構成とすれば、ダストシール25に掛る負荷を低減できて、寿命が延び、又は、簡易な構造・安価なダストシールに代替可能となり、しかも、粉塵・汚れ・汚泥等が掛る車両下面側に於て、流体圧シルンダ２の外部漏洩を防ぎ、安全性を高め得る。   Also, the inner surface 7a of the peripheral wall portion 7 of the bottomed tubular member 11 is provided with a flexible or elastic dust cover member 6 that shields the inner surface 7a from being exposed at a position above the piston member 4. For example, the load on the dust seal 25 can be reduced, the service life can be extended, or the dust seal 25 can be replaced with a simple structure / inexpensive dust seal. 2 can prevent external leakage and improve safety.

本発明の実施の一形態を示す一部断面正面図である。It is a partial cross section front view which shows one Embodiment of this invention. ピストン部材の一例を示す断面図である。It is sectional drawing which shows an example of a piston member. 要部断面図である。It is principal part sectional drawing. 比較例を示す一部断面正面図である。It is a partial cross section front view which shows a comparative example. 本発明に係る懸架装置を装着する前の状態を示した説明図である。It is explanatory drawing which showed the state before mounting | wearing with the suspension apparatus which concerns on this invention. 従来例を示す一部断面正面図である。It is a partial cross section front view which shows a prior art example.

符号の説明Explanation of symbols

１ 懸架装置
２ 流体圧シリンダ
２Ａ エアシリンダ
３ コイルスプリング
４ 円環状ピストン部材
５ 底壁部
６ ダストカバー部材
７ 周壁部
７ａ 内面
９ 外面
11 有底筒形部材
13 緩衝装置
38 突起部材
Ｃ 空間部
Ｅ 流体収納空室部 DESCRIPTION OF SYMBOLS 1 Suspension apparatus 2 Fluid pressure cylinder 2A Air cylinder 3 Coil spring 4 Toroidal piston member 5 Bottom wall part 6 Dust cover member 7 Peripheral wall part 7a Inner surface 9 Outer surface
11 Bottomed cylindrical member
13 Shock absorber
38 Protruding member C Space E Fluid storage vacancy

Claims (4)

上方開口状の空間部（Ｃ）を形成する有底筒形部材（11）を備え、該有底筒形部材（11）の上記空間部（Ｃ）内にピストン部材（４）を装着して、上記空間部（Ｃ）内に於て、上記有底筒形部材（11）の底壁部（５）と上記ピストン部材（４）との間に流体収納空室部（Ｅ）を形成し、さらに、上記ピストン部材（４）の上面（９）側に直列的にコイルスプリング（３）を配設したことを特徴とする懸架装置。   A bottomed cylindrical member (11) that forms an upper opening-shaped space (C) is provided, and a piston member (4) is mounted in the space (C) of the bottomed cylindrical member (11). In the space part (C), a fluid storage empty part (E) is formed between the bottom wall part (5) of the bottomed cylindrical member (11) and the piston member (4). The suspension device further comprises a coil spring (3) arranged in series on the upper surface (9) side of the piston member (4). 上記流体収納空室部（Ｅ）内にエアを密封状に収納してエアシリンダ（２Ａ）を構成すると共に該エアを出し入れして車高を調整するように構成した請求項１記載の懸架装置。   The suspension device according to claim 1, wherein air is hermetically stored in the fluid storage space (E) to form an air cylinder (2A) and the vehicle height is adjusted by taking in and out the air. . 上記流体収納空室部（Ｅ）内にオイルを出し入れして車高を調整するように構成した請求項１記載の懸架装置。   The suspension device according to claim 1, wherein the vehicle height is adjusted by putting oil into and out of the fluid housing empty space (E). 上記有底筒形部材（11）の周壁部（７）の内面（７ａ）が、上記ピストン部材（４）よりも上方位置で露出するのを遮蔽する可撓性乃至弾性を有するダストカバー部材（６）を付設した請求項１，２又は３記載の懸架装置。   A flexible or elastic dust cover member that shields the inner surface (7a) of the peripheral wall portion (7) of the bottomed cylindrical member (11) from being exposed at a position higher than the piston member (4) ( The suspension device according to claim 1, 2 or 3, wherein 6) is attached.
JP2004059208A 2004-03-03 2004-03-03 Suspension device Pending JP2005247108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004059208A JP2005247108A (en) 2004-03-03 2004-03-03 Suspension device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004059208A JP2005247108A (en) 2004-03-03 2004-03-03 Suspension device

Publications (1)

Publication Number Publication Date
JP2005247108A true JP2005247108A (en) 2005-09-15

Family

ID=35028019

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004059208A Pending JP2005247108A (en) 2004-03-03 2004-03-03 Suspension device

Country Status (1)

Country Link
JP (1) JP2005247108A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20100695A1 (en) * 2010-08-13 2012-02-14 Sistemi Sospensioni Spa SUSPENSION FOR VEHICLE INCLUDING AN ADJUSTMENT DEVICE FOR THE HEIGHT OF THE GROUND VEHICLE BODY

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20100695A1 (en) * 2010-08-13 2012-02-14 Sistemi Sospensioni Spa SUSPENSION FOR VEHICLE INCLUDING AN ADJUSTMENT DEVICE FOR THE HEIGHT OF THE GROUND VEHICLE BODY

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