JPS58102838A - Air shock absorber - Google Patents
Air shock absorberInfo
- Publication number
- JPS58102838A JPS58102838A JP19990381A JP19990381A JPS58102838A JP S58102838 A JPS58102838 A JP S58102838A JP 19990381 A JP19990381 A JP 19990381A JP 19990381 A JP19990381 A JP 19990381A JP S58102838 A JPS58102838 A JP S58102838A
- Authority
- JP
- Japan
- Prior art keywords
- air chamber
- outer cylinder
- air
- shock absorber
- shock
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/08—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall
- F16F9/084—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall comprising a gas spring contained within a flexible wall, the wall not being in contact with the damping fluid, i.e. mounted externally on the damper cylinder
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
【発明の詳細な説明】 本発明はエアーショックの改良に関するものである。[Detailed description of the invention] The present invention relates to improvements in air shocks.
エアーショックは自動車の車高を一定に保つものであり
、従来のエアーショックとしては複筒ガスショックアブ
ソーバの外筒とダスト力Ｉく一間にローリング型ダイヤ
フラムを装着し、小さな空気ばねを付けた構造が提案さ
れている。Air shocks are used to maintain a constant vehicle height, and conventional air shocks are equipped with a rolling diaphragm between the outer cylinder of a dual-tube gas shock absorber and the dust loader, and a small air spring attached to it. structure is proposed.
しかるに、この空気ばねは積載条件の変動分荷重を支持
する補助ばねとして使われる。However, this air spring is used as an auxiliary spring to support the load due to variations in loading conditions.
今、エアーショックの作用を説明するに、該エアーショ
ックは、荷物を積んで車高が下がった場合、コンプレッ
サーよシの空気を外筒とダストカバー間に形成されるエ
アーショックの空気室に注入し、この空気室の圧力を上
げて車高を元の位置にもどすものである。Now, to explain the action of the air shock, when the vehicle height is lowered due to loading cargo, air from the compressor is injected into the air chamber of the air shock formed between the outer cylinder and the dust cover. The pressure in this air chamber is then increased to return the vehicle height to its original position.
一方、荷物をおろして車高が上がった場合はエアーショ
ックの空気室の空気を抜き、圧力を下げて、車高を元の
位置にもどすのである。On the other hand, if the vehicle height increases after unloading the luggage, the air in the air chamber of the air shock is removed, the pressure is lowered, and the vehicle height is returned to its original position.
しかるに、以上のような従来のエアーショックの構造で
は、空気室の圧力変動によシ、懸架ばねのばね定数は変
化するが、減衰力特性は変化しないという不具合を有す
る。However, the conventional air shock structure as described above has a problem in that the spring constant of the suspension spring changes due to pressure fluctuations in the air chamber, but the damping force characteristics do not change.
本発明の目的は上述した不具合に鑑みなされたもので、
ショックアブソーバ外筒とダストカバーとの間に形成さ
れる空気室の圧力変動により減衰力特性も変化するよう
にしたエアーショックを提供するにある。The purpose of the present invention was made in view of the above-mentioned problems,
To provide an air shock whose damping force characteristics are changed by pressure fluctuations in an air chamber formed between a shock absorber outer cylinder and a dust cover.
このよ−うな目的を達成するために、本発明は、ショッ
クアブソーバ外筒とダストカバーとの間に形成される空
気室とショックアブソーバの内、外筒間に形成されるリ
ザーバ空気室を、ショックアブソーバ外筒に設けたボー
トによって連通ずると共に、該ボートのまわシを前記外
筒の内側に装着したゴム袋で覆うよう構成したものであ
る。In order to achieve such an object, the present invention provides an air chamber formed between the shock absorber outer cylinder and the dust cover, and a reservoir air chamber formed between the inner and outer cylinders of the shock absorber. Communication is provided by a boat provided in the absorber outer cylinder, and the rotary shaft of the boat is covered with a rubber bag attached to the inside of the outer cylinder.
以下、図に示す実施例を用いて本発明の詳細な説明する
。Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.
第１図は本発明に係るエアーショックの一実施例を示す
断面図である。FIG. 1 is a sectional view showing an embodiment of an air shock according to the present invention.
ショックアブソーバ１は内、外二重の筒体２．３からな
シ、内筒２内にはピストン４が摺動自在に嵌合され、ピ
ストンロッド５は筒体上方に延出されて車体側に連結さ
れ、又外筒５下部は車輪側に連結されている。The shock absorber 1 consists of a dual inner and outer cylindrical body 2.3, a piston 4 is slidably fitted into the inner cylinder 2, and a piston rod 5 extends above the cylindrical body and is attached to the vehicle body side. The lower part of the outer cylinder 5 is connected to the wheel side.
ピストン４には、パルプ４ａ、オリフィス４ｂ等が設け
られると共に、内、外筒２，３の底に設けた栓６上には
ボトムパルプ７が設けられ、内、外合されている。The piston 4 is provided with a pulp 4a, an orifice 4b, etc., and a bottom pulp 7 is provided on the plug 6 provided at the bottom of the inner and outer cylinders 2 and 3, and the inner and outer cylinders are connected to each other.
なお、第１図中、符号９はオイルシールである。In addition, in FIG. 1, the reference numeral 9 is an oil seal.
以上の内、外筒２，３間にはリザーバ空気室１０が、内
筒２内にはピストン４で区画された油圧室１１．１２が
各形成され、各室内には作動油が充満している。Among the above, a reservoir air chamber 10 is formed between the outer cylinders 2 and 3, and hydraulic chambers 11 and 12 partitioned by a piston 4 are formed inside the inner cylinder 2, and each chamber is filled with hydraulic oil. There is.
ボトムパルプ７は内筒２の底に設けたボディ１３を備え
、該ボディ１３にはピストン下側の油圧室１１とリザー
バ空気室１０とを接続する通路１４が形成され、この通
路１４の上部には圧縮行程のＮ定ストロークでオリフィ
スを開くチェックパルプ１６が設けられている。The bottom pulp 7 includes a body 13 provided at the bottom of the inner cylinder 2. A passage 14 connecting the hydraulic chamber 11 below the piston and the reservoir air chamber 10 is formed in the body 13. A check pulp 16 is provided which opens the orifice at N constant stroke of the compression stroke.
そして、伸び行程ではばね１５に抗してチェックパルプ
１６が開き、リザーバ空気室１ｏがら通路１４を介して
油圧室１１に油を導入するようになっている。In the extension stroke, the check pulp 16 opens against the spring 15, and oil is introduced from the reservoir air chamber 1o into the hydraulic chamber 11 via the passage 14.
また、外筒３の外側には、上端部が前記ピストンロッド
５に装着され、かつ外筒３との間に空気室１８を形成す
るダストカバー１７が配設されておシ、該夕′ストカバ
ー１７と外筒３との間には、ローリング型ダイヤフラム
１９が装着されている。Further, on the outside of the outer cylinder 3, a dust cover 17 whose upper end is attached to the piston rod 5 and forms an air chamber 18 between it and the outer cylinder 3 is disposed. A rolling diaphragm 19 is installed between 17 and the outer cylinder 3.
該ダイヤフラム１９は、外周部１９ａがダストカバー１
７の下端部に取り付けられると共に、内周部１９ｂが外
筒３に取り付けられている。The diaphragm 19 has an outer peripheral portion 19a that is connected to the dust cover 1.
7, and the inner peripheral portion 19b is attached to the outer cylinder 3.
しかるに、以上述べた構造は既知であり、本発明の特徴
とするところは、前記リザーバ空気室１０と空気室１日
とを同圧とするために、外筒３に。However, the structure described above is known, and the feature of the present invention is that in order to make the reservoir air chamber 10 and the air chamber have the same pressure, the outer cylinder 3 is provided with the same pressure.
該リザーバ空気室１０と空気室１８とを連通するボート
２０を設ける３と共に、該ボート２０よシ油が洩れない
ように、ボート２０のまわりを覆うゴム袋２１を外筒６
の内側に装着した点にある。A boat 20 that communicates between the reservoir air chamber 10 and the air chamber 18 is provided 3, and a rubber bag 21 that covers the boat 20 is attached to the outer cylinder 6 to prevent oil from leaking from the boat 20.
It is located at the point attached to the inside of the.
なお、前記ピストン４とボトムパルプ７の構造ハ、第２
図、第３図にそれぞれ詳細に示すように、リーフパルプ
構造とし、又リーフパルプ２２．２３のシート面４Ｃ＋
７ａには段差゛を設けず、シート面４ｃ、７ａの面積を
大きくとれるような構造にしである。Note that the structure of the piston 4 and the bottom pulp 7 is
As shown in detail in Fig. 3 and Fig. 3, the leaf pulp structure is used, and the sheet surface 4C+
No step is provided in the seat 7a, and the structure is such that the area of the seat surfaces 4c and 7a can be increased.
次に、以上のように構成されたエアーショックの作用に
ついて説明する。Next, the action of the air shock configured as above will be explained.
まず、車高が下がった場合、前記空気室１８にコンプレ
ッサーにより空気を注入し、該空気室１８内の圧力上昇
により車高をもとの位置に戻すのであるが、このとき、
ゴム袋２１内の空気室２１１Ｌを介して前記空気室１８
とリザーバ空気室１０を同じ圧力にする。First, when the vehicle height is lowered, air is injected into the air chamber 18 by a compressor, and the pressure inside the air chamber 18 is increased to return the vehicle height to its original position.
The air chamber 18 via the air chamber 211L inside the rubber bag 21
and the reservoir air chamber 10 to the same pressure.
すなわち、荷物を積んで車高が下がった場合、空気室１
８内の圧力上昇で車高をもとの位置に戻すのであるが、
このとき、前記リザーバ望気室１０も同様に圧力が上昇
することになる。In other words, when the vehicle height is lowered due to loading cargo, air chamber 1
The pressure rise within 8 will return the vehicle height to its original position,
At this time, the pressure of the reservoir air chamber 10 also rises.
そして、このリザーバ空気室１０の圧力上昇によって減
衰力を高くしている。The damping force is increased by increasing the pressure in the reservoir air chamber 10.
また、ピストン４とボトムパルプ７はリーフパルプ構造
で、リーフパルプ２２．２３のシート面４Ｃ１７ａに段
差を設けず、シート向４ｃ、７ａの面積を大きくするこ
とにより、リーフパルプ２２．２５の背圧（封入圧）を
高くシ、これによりリーフバルブ２２＃ ２３のクラッ
キング圧を高くして低速域の減衰力を高くしている。In addition, the piston 4 and the bottom pulp 7 have a leaf pulp structure, and by not providing a step on the sheet surface 4C17a of the leaf pulp 22.23 and increasing the area in the sheet direction 4c and 7a, the back pressure of the leaf pulp 22.25 is increased. (filling pressure) is increased, thereby increasing the cracking pressure of leaf valve 22#23 and increasing the damping force in the low speed range.
すなわち、リザーバ空気室１０内の圧力によってリーフ
パルプ２２，２３のクラッキング圧が変化し、減衰力が
変化することになる。That is, the cracking pressure of the leaf pulps 22 and 23 changes depending on the pressure inside the reservoir air chamber 10, and the damping force changes.
以上説明したように、本発明は、ショックアブソーバ外
筒とダストカバーとめ間に形成される空気室と、ショッ
クアブソーバの内、外筒間に形成されるリザーバ空気室
とを、前記外筒に設けたボートによって連通ずると共に
、前記外筒の内側に、ボートのまわシを覆うよう形成さ
れたゴム袋を装着した構成としたので、前記空気室内の
圧力変動により、懸架ばねのばね定数が変化し、それに
ともなって、減衰力特性も変えることができるという効
果を有する。As explained above, the present invention provides an air chamber formed between the shock absorber outer cylinder and the dust cover, and a reservoir air chamber formed between the shock absorber outer cylinder and the outer cylinder. A rubber bag is attached to the inside of the outer cylinder so as to cover the boat's swivel, so that the spring constant of the suspension spring changes due to pressure fluctuations in the air chamber. Accordingly, it has the effect that the damping force characteristics can also be changed.
第１図は本発明に係るエアーショックの一実施例を示す
断面図、第２図および第３図はそれぞれ第１図の一部拡
大断面図である。
１Ｓ−ショックアブソーバ
２〜内 筒 ３〜外 筒
１０〜リザーバ空気室
１７〜ダストカバー １８〜空気室
１９〜ダイヤフラム ２０〜ボート
２１〜ボーム袋
昭和５６年１２月１０日
特許出願人 萱場工業株式会社FIG. 1 is a sectional view showing an embodiment of an air shock according to the present invention, and FIGS. 2 and 3 are partially enlarged sectional views of FIG. 1. 1S-Shock absorber 2~Inner tube 3~Outer tube 10~Reservoir air chamber 17~Dust cover 18~Air chamber 19~Diaphragm 20~Boat 21~Bohm bag December 10, 1981 Patent applicant Kayaba Kogyo Co., Ltd.
Claims (1)
スト力Ｉ（−との間に、ダイヤプラムを装着し、空気ば
ねを設けたエアーショックにおいて、前記外筒とダスト
カッ（−との間に形成される空気室と、ショックアブソ
ー・くの内、外筒間に形成されるリザーバ空気室とを、
前記外筒に設けたボートによって連通すると共に、前記
外筒の内側に、ボートのまわシを覆うよう形成されたゴ
ム袋を装着したことを特徴とするエアーショック。In an air shock in which a diaphragm is installed and an air spring is provided between the shock absorber outer cylinder and the dust cup I (-) arranged outside the outer cylinder, the air shock between the outer cylinder and the dust cup (-) and the reservoir air chamber formed between the shock absorber and the outer cylinder.
An air shock characterized in that the air shock communicates with the outer cylinder through a boat, and a rubber bag formed to cover the boat's circumference is attached to the inside of the outer cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19990381A JPS58102838A (en) | 1981-12-10 | 1981-12-10 | Air shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19990381A JPS58102838A (en) | 1981-12-10 | 1981-12-10 | Air shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58102838A true JPS58102838A (en) | 1983-06-18 |
Family
ID=16415511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19990381A Pending JPS58102838A (en) | 1981-12-10 | 1981-12-10 | Air shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58102838A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0542292U (en) * | 1991-11-12 | 1993-06-08 | 株式会社フジタ | Tower crane lifting device |
| US10520053B2 (en) | 2015-08-05 | 2019-12-31 | Freni Brembo S.P.A. | Heat shield element |
-
1981
- 1981-12-10 JP JP19990381A patent/JPS58102838A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0542292U (en) * | 1991-11-12 | 1993-06-08 | 株式会社フジタ | Tower crane lifting device |
| US10520053B2 (en) | 2015-08-05 | 2019-12-31 | Freni Brembo S.P.A. | Heat shield element |
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