JPH03107630A - air spring - Google Patents
air springInfo
- Publication number
- JPH03107630A JPH03107630A JP24226789A JP24226789A JPH03107630A JP H03107630 A JPH03107630 A JP H03107630A JP 24226789 A JP24226789 A JP 24226789A JP 24226789 A JP24226789 A JP 24226789A JP H03107630 A JPH03107630 A JP H03107630A
- Authority
- JP
- Japan
- Prior art keywords
- air
- spring
- air spring
- spring constant
- volume
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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- Fluid-Damping Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、空気ばねに係り、特に車両用として車体を支
持するものに好適な空気ばねに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air spring, and particularly to an air spring suitable for supporting a vehicle body.
従来の空気ばねにおいては、設計、製作時に仕様が決定
されると、該空気ばねに関してばね定数を変化させるこ
とは困難であった。すなわち、空気ばねを製作した後、
ばね定数を減少させる場合には補助空気溜を設け、該空
気ばねの空気室内容積を増大させる必要があった。In conventional air springs, once the specifications are determined at the time of design and manufacture, it is difficult to change the spring constant of the air spring. That is, after manufacturing the air spring,
In order to reduce the spring constant, it was necessary to provide an auxiliary air reservoir to increase the volume within the air chamber of the air spring.
また、空気ばねのばね定数を増大させる場合優こは、該
空気ばねの空気室内容積を減少させるための部材を該空
気室内に挿入する必要がありだ。Furthermore, when increasing the spring constant of the air spring, it is necessary to insert a member into the air chamber to reduce the volume within the air chamber of the air spring.
なお、前記空気ばねのばね定数を増大させる構造に関し
て関連するものには、例えば実開昭５８−１９２１６４
号公権、実開昭５８−１９２１６４号公報等が挙げられ
る。In addition, related to the structure for increasing the spring constant of the air spring, for example, Japanese Utility Model Application Laid-Open No. 58-192164
Publication No. 192164, Publication No. 58-192164, etc. are cited.
上記従来技術では、空気ばねのばね定数を変更させる場
合、該空泡ばねに連通した補助空気溜を設けるか、ある
いはその内容積を変化させる必要があり、大きな改良作
業が必要である。In the above-mentioned prior art, when changing the spring constant of the air spring, it is necessary to provide an auxiliary air reservoir communicating with the air bubble spring, or to change its internal volume, which requires major improvement work.
また、空気ばねの空気室内に部材を設置する場合でも、
該空気ばねな一旦分解して酌記部材を設置した後、再度
組立る必要があった。Also, even when installing components inside the air chamber of an air spring,
The air spring had to be disassembled once, the cupboard member installed, and then reassembled.
すなわち、従来の空気ばねにおいては、該空気ばねの稼
働中にそのばね定数をＩＩ４！！するというばね定数可
変ａｖｉｔを有していなかった。That is, in the conventional air spring, the spring constant is II4! during operation of the air spring. ! It did not have a variable spring constant avit.
本発明の目的とするところは、稼働中であっても自由に
ばね定数を可変できる空気ばねな提供することにある。An object of the present invention is to provide an air spring whose spring constant can be freely varied even during operation.
上記目的を達成するため、本発明は空気ばねな上板と、
下板と、該上板および下板の間を連結して設置され、空
気室を形成するベローズと、前記空気室内に設けられ、
供給される流体によってその体積を可変とした内容積調
整手段とから構成したものである。In order to achieve the above object, the present invention includes an air spring top plate;
a lower plate; a bellows installed in connection with the upper plate and the lower plate to form an air chamber; and a bellows provided within the air chamber;
and an internal volume adjusting means whose volume can be varied depending on the fluid supplied.
空気ばねの稼働中の上下ばね定数は、ゴムベローズ形の
場合、次式で求められる。The vertical spring constant of the air spring during operation is determined by the following formula in the case of a rubber bellows type.
二こで、
Ｋｄ ：動ばね定数（Ｋｇ ７ｃｍ ）γ ：ポリトロ
ープ指数
Ｐ ：空気ばねの内圧（にｙ／ｃｒｉ ）■ ＝空気ば
ねの空気室内容積（７）
Ａ ：空気ばねの有効面積（ｃｌｌ）
２０式１１）から判るように、各仕様が決定されれば上
下ばね定数が決まる。さて、式＋１）で求められる上下
ばね定数が必要とする値を満足しない場合には、空気室
内容積Ｖを変えることで必要な上下ばね定数が得られる
。例えば、式イ１）によって求められた上下ばね定数が
必要とする値より大きい場合には、空気室内容ＭＶを太
き（すればよく、方、前述の値が／ｈさい場合には、空
気室内容積■も小さくすればよい。Kd: Dynamic spring constant (Kg 7cm) γ: Polytropic index P: Internal pressure of air spring (y/cri) ■ = Volume of air chamber in air spring (7) A: Effective area of air spring (cll) As can be seen from Equation 20 (11), once each specification is determined, the upper and lower spring constants are determined. Now, if the vertical spring constant determined by formula +1) does not satisfy the required value, the required vertical spring constant can be obtained by changing the air chamber internal volume V. For example, if the vertical spring constant determined by equation (1) is larger than the required value, the air chamber content MV should be made thicker. The indoor volume ■ should also be made smaller.
このような状況に鑑みて本発明は、空気はねの空気室内
容積を内容積調整手段によって容易に調整し、必要とす
る上下ばね定数を得る構成としたものである。すなわち
、前記内容積調整手段は、例えばゴム製袋部材であって
、この中に圧縮空気等の流体を供給することにより、空
気ばね稼働中であっても容易に必要な上下ばね定数を得
ることができる。In view of this situation, the present invention has a structure in which the internal volume of the air chamber of the air spring can be easily adjusted by an internal volume adjusting means to obtain the required vertical spring constant. That is, the internal volume adjusting means is, for example, a rubber bag member, and by supplying fluid such as compressed air into the bag member, the necessary vertical spring constant can be easily obtained even when the air spring is in operation. I can do it.
以下、本発明による空気ばねの一実施例を第１図により
説明する。同図において、ｌはゴムベローズ、２は上板
で、ゴムベローズ１の一端は上板２に嵌合し押え金で取
付けられている。３は前記上板２に形成されている吸排
気口である。４は前記ゴムベローズ１の他端が嵌合し取
付けられる下板である。５は下板４に設けられたストッ
パで、空気ばねの高さを所定以上に保つためのものであ
る。６は上板２．ゴムベローズｌおよび下板３によって
形成される空気室内に設けられる空気室内容量ａｉｉ整
手段に相当するゴム製の袋部材である。An embodiment of the air spring according to the present invention will be described below with reference to FIG. In the figure, 1 is a rubber bellows, 2 is an upper plate, and one end of the rubber bellows 1 is fitted into the upper plate 2 and attached with a presser foot. Reference numeral 3 denotes an intake/exhaust port formed in the upper plate 2. 4 is a lower plate into which the other end of the rubber bellows 1 is fitted and attached. Reference numeral 5 denotes a stopper provided on the lower plate 4 for keeping the height of the air spring above a predetermined level. 6 is the upper plate 2. This is a rubber bag member corresponding to an air chamber capacity adjusting means provided in the air chamber formed by the rubber bellows l and the lower plate 3.
該袋部材６は前記ストッパ５の外周に取付けられる金具
５ａによって支持される。７は前記装部材６に形成され
る吸排気ボートであり、空気配管８が接続されている。The bag member 6 is supported by a metal fitting 5a attached to the outer periphery of the stopper 5. Reference numeral 7 denotes an intake/exhaust boat formed on the mounting member 6, to which an air pipe 8 is connected.
該空気配管８は空気ばね外に引通されており、電磁方向
切換弁９に接続されている。該電磁方向切換弁９は３位
置の切換えを行なう構造となっており、切換えを行なう
ソレノイド９ａ、９ｂを有している。１０は前記空気配
管８に接続された圧力スイッチで、前＃２袋部材６内の
内圧を検出するためのものである。The air pipe 8 extends outside the air spring and is connected to an electromagnetic directional control valve 9. The electromagnetic directional switching valve 9 has a structure for switching between three positions, and has solenoids 9a and 9b for switching. A pressure switch 10 is connected to the air pipe 8 and is used to detect the internal pressure inside the front #2 bag member 6.
二のような構成において、空気ばねの内容積を小さくし
たい場合には、電磁方向切換弁９のソレノイド９ｍを励
磁してボートを開き、圧縮空気を空気排管８．吸排気ボ
ート７を介して袋部材６に供給する。この時、装部材６
内の内圧が空気ばね内圧よりも高くなった時点で該袋部
材６がふ（れ、その体積が最大となる。このため、空気
ばね内の内容積が前記装部材６の体積分だけ減少し、最
小となる。In a configuration like 2, if you want to reduce the internal volume of the air spring, the solenoid 9m of the electromagnetic directional valve 9 is energized to open the boat and the compressed air is passed through the air exhaust pipe 8. It is supplied to the bag member 6 via the intake/exhaust boat 7. At this time, the mounting member 6
When the internal pressure inside the bag member 6 becomes higher than the air spring internal pressure, the bag member 6 inflates and its volume reaches its maximum.Therefore, the internal volume inside the air spring decreases by the volume of the mounting member 6. , is the minimum.
そして、装部材６内の内圧が規定圧力に達すると圧力ス
イッチ１０によって検知され、連動してソレノイド９ａ
が消磁し、電磁方向切換弁９のボートを閉じる。この時
点で装部材６への圧縮空気の供給が断たれる。When the internal pressure inside the mounting member 6 reaches a specified pressure, it is detected by the pressure switch 10, and the solenoid 9a
is demagnetized and the boat of the electromagnetic directional valve 9 is closed. At this point, the supply of compressed air to the mounting member 6 is cut off.
一方、空気ばねの空気室内容積を最内にする場合には、
ソレノイド９ｂを励磁する。これによりボート７．空気
配管８を経て電磁方向切換弁９から大気に放出される。On the other hand, when the air chamber volume of the air spring is set to the innermost position,
Energize solenoid 9b. This allows boat 7. It is discharged into the atmosphere from an electromagnetic directional control valve 9 via an air pipe 8.
該装部材６内の空気は、空気ばね空気室との圧力差によ
って押出され、完全に排出される。このため、装部材６
内の容積分について空気ばねの空気容積が増大して最大
となる。The air in the mounting member 6 is forced out by the pressure difference with the air spring air chamber and is completely exhausted. For this reason, the mounting member 6
The air volume of the air spring increases with respect to the volume within, and becomes maximum.
このように袋部材６内に圧縮空気を供給することによっ
て、空気ばねの空気室内容積を変えることができ、該空
気ばねの大掛りな改良作業を行なう必要がない。したが
って、任意に空気ばねのばね定数を変えることができる
。By supplying compressed air into the bag member 6 in this manner, the internal volume of the air chamber of the air spring can be changed, and there is no need to perform large-scale improvement work on the air spring. Therefore, the spring constant of the air spring can be changed as desired.
このような構成によれば、車両の乗車率に対応して空気
ばねのばね定数を変えることができる。According to such a configuration, the spring constant of the air spring can be changed in accordance with the occupancy rate of the vehicle.
また、磁気浮上車等において重輪走行時と浮上走行時と
で空気ばねのばね定数を変えることができる。したがっ
て、車両における乗心地の向上が図れる。これらのばね
定数の変更は、前記電磁方向切換弁９を車両の状態に対
応させて制御すれば自動的に行なうことができる。Further, in a magnetically levitated vehicle or the like, the spring constant of the air spring can be changed between when traveling with heavy wheels and when traveling in levitation. Therefore, the riding comfort in the vehicle can be improved. These spring constants can be changed automatically by controlling the electromagnetic directional control valve 9 in accordance with the state of the vehicle.
さらに、前述のように空気ばねのばね定数を変更できる
ため、補助空気溜を設ける場合でもこれを小さなものに
できる。Furthermore, since the spring constant of the air spring can be changed as described above, even if an auxiliary air reservoir is provided, it can be made smaller.
ところで、繭記−実施例においては、袋部材内に圧縮空
気を充填する構造について説明したが、Ｕ袋部材内に油
あるいは水等の液体を充填しても同様な効果が達成でき
る。また、液体を充填する場合には、非圧縮性であるこ
とがらばね定数を任意に設定できるという一実施例にな
い効果を有する。このように本発明は前述の構成に限定
されるものではない。By the way, in the example of the book "Cocoon", a structure in which the bag member is filled with compressed air has been described, but the same effect can be achieved even if a liquid such as oil or water is filled in the U bag member. Furthermore, when filled with liquid, since it is incompressible, the spring constant can be set arbitrarily, which is an effect not found in the embodiment. Thus, the present invention is not limited to the above-described configuration.
以上説明したように本発明によれば、空気ばねが稼働中
であっても自由にばね定数を変えることができる。As explained above, according to the present invention, the spring constant can be freely changed even when the air spring is in operation.
第１図は本発明による空気ばねの一実施例を示す断面図
である。FIG. 1 is a sectional view showing one embodiment of an air spring according to the present invention.
Claims (1)
設置され、空気室を形成するベローズと、前記空気室内
に設けられ、供給される流体によって、その体積を可変
とした内容積調整手段とから構成したことを特徴とする
空気ばね。1. An upper plate, a lower plate, a bellows installed to connect the upper plate and the lower plate to form an air chamber, and a bellows provided in the air chamber, the volume of which is variable by the fluid supplied. An air spring characterized by comprising an internal volume adjusting means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24226789A JPH03107630A (en) | 1989-09-20 | 1989-09-20 | air spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24226789A JPH03107630A (en) | 1989-09-20 | 1989-09-20 | air spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03107630A true JPH03107630A (en) | 1991-05-08 |
Family
ID=17086723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24226789A Pending JPH03107630A (en) | 1989-09-20 | 1989-09-20 | air spring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03107630A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996007035A1 (en) * | 1994-08-31 | 1996-03-07 | Hendrik Lenten | Flexible shock-absorber provided with hydraulic power transmission and pneumatic spring action |
| US6923434B2 (en) | 2003-11-10 | 2005-08-02 | The Goodyear Tire & Rubber Company | Dual height airspring having adjusted spring rate |
| WO2015015809A1 (en) * | 2013-07-31 | 2015-02-05 | 川崎重工業株式会社 | Air spring and railway vehicle |
-
1989
- 1989-09-20 JP JP24226789A patent/JPH03107630A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996007035A1 (en) * | 1994-08-31 | 1996-03-07 | Hendrik Lenten | Flexible shock-absorber provided with hydraulic power transmission and pneumatic spring action |
| US6923434B2 (en) | 2003-11-10 | 2005-08-02 | The Goodyear Tire & Rubber Company | Dual height airspring having adjusted spring rate |
| WO2015015809A1 (en) * | 2013-07-31 | 2015-02-05 | 川崎重工業株式会社 | Air spring and railway vehicle |
| JP2015031314A (en) * | 2013-07-31 | 2015-02-16 | 川崎重工業株式会社 | Air spring and railway vehicle |
| CN105393018A (en) * | 2013-07-31 | 2016-03-09 | 川崎重工业株式会社 | Air spring and railway vehicle |
| US9545933B2 (en) | 2013-07-31 | 2017-01-17 | Kawasaki Jukogyo Kabushiki Kaisha | Air spring and railcar |
| CN105393018B (en) * | 2013-07-31 | 2017-03-15 | 川崎重工业株式会社 | Air springs and rolling stock |
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