JP2980343B2 - Gas spring manufacturing method - Google Patents
Gas spring manufacturing methodInfo
- Publication number
- JP2980343B2 JP2980343B2 JP2137106A JP13710690A JP2980343B2 JP 2980343 B2 JP2980343 B2 JP 2980343B2 JP 2137106 A JP2137106 A JP 2137106A JP 13710690 A JP13710690 A JP 13710690A JP 2980343 B2 JP2980343 B2 JP 2980343B2
- Authority
- JP
- Japan
- Prior art keywords
- plug
- tube cylinder
- hole
- dish
- cylinder
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、ガススプリングの製造方法に関し、特に、
そのチューブシリンダ内へのガスやオイルの封入を容易
とし、かつ封止を確実に行うことのできるガススプリン
グの製造方法に関する。The present invention relates to a method for manufacturing a gas spring, and more particularly, to a method for manufacturing a gas spring.
The present invention relates to a method of manufacturing a gas spring which facilitates sealing of gas and oil into the tube cylinder and can reliably perform sealing.
［従来の技術］ このようなガス・オイル封止部にかかわるガススプリ
ングの製造方法としては、例えば特開昭61−88982号公
報に開示されているものがある。[Prior Art] As a method of manufacturing a gas spring relating to such a gas-oil sealing portion, there is a method disclosed in, for example, JP-A-61-88982.
このものは、チューブシリンダの頂部にガスやオイル
を充填するための貫通孔を形成し、その貫通孔からガス
やオイルを注入した後、栓体を圧入し、さらに頂部にリ
ング部材等を突き合せにして、抵抗溶接により、頂部と
リング部材とを一体的に接合するようにしたものであ
る。In this type, a through hole for filling gas or oil is formed at the top of the tube cylinder, gas or oil is injected from the through hole, a plug is pressed in, and a ring member or the like is abutted on the top. Then, the top and the ring member are integrally joined by resistance welding.
［発明が解決しようとする課題］ しかしながら、このような従来例にあっては、チュー
ブシリンダの頂部に形成された貫通孔に栓体を圧入した
後、その頂部に、本体の支持機構としてのリング部材等
が抵抗溶接で溶着されるが、チューブシリンダの頂部自
体には十分な剛性が具わっておらず、加えて、頂部にお
ける貫通孔の周囲が均一に溶着されるとは限らないため
に、リング部材を介して、頂部に繰返し荷重等が加えら
れると、貫通孔とこれに圧入された栓体との間に緩みが
生じ、ガス洩れやオイル洩れが発生するという問題があ
った。[Problems to be Solved by the Invention] However, in such a conventional example, after a plug is pressed into a through hole formed at the top of a tube cylinder, a ring as a support mechanism of a main body is provided at the top. Although the members and the like are welded by resistance welding, the top of the tube cylinder itself does not have sufficient rigidity, and in addition, the periphery of the through hole at the top is not necessarily uniformly welded, When a repeated load or the like is applied to the top portion via the ring member, looseness occurs between the through hole and the plug body press-fitted into the through hole, causing a problem that gas leakage and oil leakage occur.
本発明の目的は、上述したような従来の問題点に着目
し、その解決を図るべく、ガスやオイルの封入作業が容
易で、しかも、封入後の頂部に取付けられるリング部材
やヒンジを頂部および封止部材と一体化することによ
り、製造後の使用中において、封止部からガスやオイル
の洩れる虞が無いガススプリングの製造方法を提案する
ことにある。The object of the present invention is to pay attention to the conventional problems as described above, and in order to solve the problem, a sealing operation of gas or oil is easy, and furthermore, a ring member and a hinge attached to the top after the sealing are provided with the top and the bottom. An object of the present invention is to propose a method of manufacturing a gas spring in which gas and oil do not leak from a sealing portion during use after manufacturing by being integrated with a sealing member.
［課題を解決するための手段］ かかる目的を達成するために、本発明は、チューブシ
リンダの部分球形状の頂部に貫通孔を設けるステップ
と、皿形頭部とその少なくとも下側部分に切欠きが形成
された栓体部とを有する作動流体封止用プラグ部材の栓
体部を前記チューブシリンダの貫通孔に対し途中まで圧
入するステップと、前記栓体部に形成された切欠きを介
して前記チューブシリンダ内に所要の流体を充填するス
テップと、前記プラグ部材をさらに圧入して前記栓体部
および前記貫通孔を前記皿形頭部が前記頂部から僅かに
突出する仮封止状態とするステップと、前記プラグ部材
の前記皿形頭部上に前記頂部支持用の支持部材を圧接し
た状態に保ち、この状態で、前記チューブシリンダ、プ
ラグ部材および支持部材の３つの部材を、チューブシリ
ンダとプラグ部材間、チューブシリンダと支持部材間、
およびプラグ部材の皿形頭部と支持部材間がほぼ同時に
一体に溶融接合されるように、溶接するステップとを備
えることを特徴とする。Means for Solving the Problems In order to achieve the above object, the present invention provides a step of providing a through hole at the top of a partial spherical shape of a tube cylinder, and forming a notch in a dish-shaped head and at least a lower part thereof. Press-fitting the plug portion of the working fluid sealing plug member having the plug portion formed with the plug portion halfway into the through hole of the tube cylinder, and a notch formed in the plug portion. Filling the tube cylinder with a required fluid, and further press-fitting the plug member to bring the plug body and the through hole into a temporarily sealed state in which the dish-shaped head slightly projects from the top. And holding the support member for supporting the top portion on the dish-shaped head of the plug member in a pressed state. In this state, the three members of the tube cylinder, the plug member, and the support member are connected to each other by a tube. Between the cylinder and the plug member, between the tube cylinder and the support member,
And welding so that the dish-shaped head of the plug member and the support member are melt-joined integrally at substantially the same time.
［作 用］ 本発明によれば、貫通孔にプラグ部材を圧入したとき
に、その皿形の頭部がシリンダ頂部から僅かながら突出
した状態に保たれ、その皿形頭部の平坦な上面に支持部
材が重ねられ、圧接した状態で溶融接合されるもので、
プラグ部材がシリンダ頂部および支持部材と共に一体化
されるのでガススプリングの動作中における封止性が損
なわれるようなことがない。[Operation] According to the present invention, when the plug member is press-fitted into the through hole, the dish-shaped head is kept slightly protruding from the cylinder top, and the flat top surface of the dish-shaped head is The support members are overlapped and melt-bonded in the state of being pressed,
Since the plug member is integrated with the cylinder top and the support member, the sealing performance during operation of the gas spring is not impaired.
［実施例］ 以下に、図面に基づいて本発明の実施例を詳細かつ具
体的に説明する。[Example] Hereinafter, an example of the present invention will be described in detail and specifically with reference to the drawings.
第１図は本発明によるガススプリングの一例を示す。
ここで、１はその外筒のチューブシリンダ、２はチュー
ブシリンダ１内に沿って摺動自在なピストンボディ、３
はピストンロッド、４はピストンリング、５および６は
チューブシリンダ１のピストンロッド３が貫通する側に
設けられたオイルシールおよびロッド案内用のガイドで
ある。FIG. 1 shows an example of a gas spring according to the present invention.
Here, 1 is a tube cylinder of the outer cylinder, 2 is a piston body slidable along the inside of the tube cylinder 1, 3
Is a piston rod, 4 is a piston ring, and 5 and 6 are oil seals and rod guides provided on the side of the tube cylinder 1 through which the piston rod 3 passes.
一方、チューブシリンダ１の頂部Ａには第２図に示す
ような貫通孔７が設けられていて、この貫通孔７からオ
イル８および作動ガス９がチューブシリンダ１内に注入
される。10は貫通孔７に圧入されるプラグ部材、11はこ
のプラグ部材10の頭部10Aと共にシリンダ頂部Ａに溶着
されるヒンジ部材である。On the other hand, a through hole 7 as shown in FIG. 2 is provided at the top A of the tube cylinder 1, from which oil 8 and working gas 9 are injected into the tube cylinder 1. Reference numeral 10 denotes a plug member that is press-fitted into the through hole 7, and reference numeral 11 denotes a hinge member that is welded to the cylinder top A together with the head 10A of the plug member 10.
プラグ部材10は、第２図に示すように、頭部10Aが皿
形に形成してあり、さらに、その栓体部10Bの下半部の
周囲にはほぼ軸心と平行に複数の切欠き溝10Cが設けて
あって、オイル８やガス９を封入する際にはプラグ部材
10の栓体部10Bを途中まで貫通孔７に圧入した状態で周
囲の切欠き溝10Cを介してチューブシリンダ１内に注入
することができる。なお、プラグ部材10の各部寸法およ
び貫通孔７については、プラグ部材10を貫通孔７に押込
んだときに、完全な封止状態が得られるような嵌め合い
寸法に形成加工されるものである。As shown in FIG. 2, the plug member 10 has a head 10A formed in a dish shape, and a plurality of notches around the lower half of the plug body 10B substantially parallel to the axis. A groove 10C is provided, and when sealing oil 8 or gas 9
The plug body 10B of 10 can be injected into the tube cylinder 1 through the surrounding notch 10C while being pressed halfway into the through hole 7. The dimensions of each part of the plug member 10 and the through-hole 7 are formed and processed to have a fitting dimension such that when the plug member 10 is pushed into the through-hole 7, a complete sealing state is obtained. .
ついで、上述のようなシリンダ頂部Ａからオイル８や
ガス９を封入してヒンジ部材11を溶着するまでの手順に
ついて説明する。Next, a procedure from sealing the oil 8 and the gas 9 from the cylinder top A to welding the hinge member 11 will be described.
まず、チューブシリンダ１にピストンボディ２やピス
トンロッド３等が組込まれ、組立てられた状態で、シリ
ンダ頂部Ａの貫通孔７からプラグ部材10をその途中まで
圧入し、オイル８およびガス９を注入する。注入を終え
た後に、第２図に示すように、プラグ部材10を頭部10A
の首下まで十分に圧入して仮封止状態とする。次に、プ
ラグ頭部10Aの上に、ヒンジ部材11のフランジ部11Aを重
ね合せるようになして、その重ね部分にプロジェクショ
ン溶接用の電極20を圧接させ、電極20を介して溶接電流
を流す。First, the piston body 2 and the piston rod 3 are assembled into the tube cylinder 1, and in the assembled state, the plug member 10 is press-fitted halfway through the through hole 7 of the cylinder top A, and the oil 8 and the gas 9 are injected. . After the injection is completed, as shown in FIG.
And press-fit it sufficiently to the bottom of the neck to form a temporarily sealed state. Next, the flange portion 11A of the hinge member 11 is superimposed on the plug head 10A, and the projection welding electrode 20 is pressed against the overlapped portion, and a welding current flows through the electrode 20.
この場合、プラグ頭部10Aの皿部分の頂部は僅かなが
らチューブシリンダ１の頂部Ａから突出しているので、
好適なプロジェクション突起として機能する。In this case, since the top of the plate portion of the plug head 10A slightly projects from the top A of the tube cylinder 1,
Functions as a suitable projection.
かくして溶接の結果は第３図に示すように、チューブ
シリンダ１のプラグ部材10貫通部と、プラグ部材10の頭
部10A近傍と、ヒンジ部材フランジ部11Aの重ね合わされ
た部分とが一体となって融合し、シリンダ頂部Ａにヒン
ジ部材を介して繰返し荷重が加えられてもプラグ10に緩
みが生じたりすることがない。Thus, as shown in FIG. 3, the welding result shows that the penetrating portion of the plug member 10 of the tube cylinder 1, the vicinity of the head 10A of the plug member 10, and the overlapped portion of the hinge member flange portion 11A are integrated. The plug 10 is not loosened even if a load is repeatedly applied to the cylinder top A via the hinge member.
［発明の効果］ 以上説明したように本発明によれば、チューブシリン
ダの部分球形状の頂部に貫通孔を設けるステップと、皿
形頭部とその少なくとも下側部分に切欠きが形成された
栓体部とを有する作動流体封止用プラグ部材の栓体部を
前記チューブシリンダの貫通孔に対し途中まで圧入する
ステップと、前記栓体部に形成された切欠きを介して前
記チューブシリンダ内に所要の流体を充填するステップ
と、前記プラグ部材をさらに圧入して前記栓体部および
前記貫通孔を前記皿形頭部が前記頂部から僅かに突出す
る仮封止状態とするステップと、前記プラグ部材の前記
皿形頭部上に前記頂部支持用の支持部材を圧接した状態
に保ち、この状態で、前記チューブシリンダ、プラグ部
材および支持部材の３つの部材を、チューブシリンダと
プラグ部材間、チューブシリンダと支持部材間、および
プラグ部材の皿形頭部と支持部材間がほぼ同時に一体に
溶融接合されるように、溶接するステップとを備えるよ
うにしたので、溶接ステップ、ガス注入ステップなどに
おいて栓体部近傍を密閉状態とすることが不要となり、
チューブシリンダが比較的薄肉で剛性がさほどでないよ
うな材料で形成され、しかも支持部材を介してシリンダ
頂部には繰返し荷重がかかるにもかかわらず、支持部材
とプラグ部材の皿頭およびシリンダ頂部が一体化され、
気密，液密性が損なわれることのない耐久性に優れたガ
ススプリング等を得ることができる。[Effects of the Invention] As described above, according to the present invention, a step of providing a through hole at the top of a partial spherical shape of a tube cylinder, and a plug having a dish-shaped head and a notch formed at least in a lower part thereof And press-fitting the plug portion of the working fluid sealing plug member having a body portion halfway into the through hole of the tube cylinder, and into the tube cylinder through a notch formed in the plug body portion. Filling the required fluid; further press-fitting the plug member to bring the plug body and the through-hole into a temporarily sealed state in which the dish-shaped head slightly protrudes from the top; The support member for supporting the top portion is kept pressed against the dish-shaped head of the member, and in this state, the three members of the tube cylinder, the plug member and the support member are connected to the tube cylinder and the plastic member. Welding so as to be melt-joined almost simultaneously and integrally between the connecting members, between the tube cylinder and the supporting member, and between the dish-shaped head of the plug member and the supporting member. In the injection step etc., it is not necessary to make the vicinity of the plug body a closed state,
Although the tube cylinder is made of a material that is relatively thin and not very rigid, and the load is repeatedly applied to the top of the cylinder via the support member, the plate head of the support member and the plug member and the top of the cylinder are integrated. And
It is possible to obtain a gas spring or the like having excellent durability without impairing airtightness and liquid tightness.
第１図は本発明製造方法が適用されるガススプリングを
示す断面図、 第２図および第３図は第１図に示すシリンダ頂部Ａ近傍
の溶接前の状態および溶接後の状態をそれぞれ示す断面
図である。 １……チューブシリンダ、 Ａ……シリンダ頂部、 ２……ピストンボディ、 ７……貫通孔、 ８……オイル、 ９……ガス、 10……プラグ部材、 10A……プラグ頭部、 10B……栓体部、 10C……切欠き溝、 11……ヒンジ部材、 11A……フランジ部、 20……電極。FIG. 1 is a cross-sectional view showing a gas spring to which the manufacturing method of the present invention is applied, and FIGS. 2 and 3 are cross-sectional views showing a state before welding and a state after welding near a cylinder top A shown in FIG. FIG. 1 ... tube cylinder, A ... cylinder top, 2 ... piston body, 7 ... through hole, 8 ... oil, 9 ... gas, 10 ... plug member, 10A ... plug head, 10B ... Plug body, 10C ... notch groove, 11 ... hinge member, 11A ... flange part, 20 ... electrode.
フロントページの続き (72)発明者 角田 壮昭 神奈川県厚木市恩名1370番地 株式会社 アツギユニシア内 (56)参考文献 特開 昭58−180848（ＪＰ，Ａ) 特開 昭61−88982（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) F16F 9/00 - 9/58 Continuation of the front page (72) Inventor Takeaki Kakuda 1370 Onna, Atsugi-shi, Kanagawa Prefecture Inside Atsugi Unisia Co., Ltd. (56) References JP-A-58-180848 (JP, A) JP-A-61-88982 (JP, A) (58) Field surveyed (Int. Cl. 6 , DB name) F16F 9/00-9/58
Claims (1)
通孔を設けるステップと、 皿形頭部とその少なくとも下側部分に切欠きが形成され
た栓体部とを有する作動流体封止用プラグ部材の栓体部
を前記チューブシリンダの貫通孔に対し途中まで圧入す
るステップと、 前記栓体部に形成された切欠きを介して前記チューブシ
リンダ内に所要の流体を充填するステップと、 前記プラグ部材をさらに圧入して前記栓体部および前記
貫通孔を前記皿形頭部が前記頂部から僅かに突出する仮
封止状態とするステップと、 前記プラグ部材の前記皿形頭部上に前記頂部支持用の支
持部材を圧接した状態に保ち、この状態で、前記チュー
ブシリンダ、プラグ部材および支持部材の３つの部材
を、チューブシリンダとプラグ部材間、チューブシリン
ダと支持部材間、およびプラグ部材の皿形頭部と支持部
材間がほぼ同時に一体に溶融接合されるように、溶接す
るステップと、 を備えることを特徴とするガススプリングの製造方法。1. A working fluid sealing plug having a step of providing a through hole at a top of a partial spherical shape of a tube cylinder, and a plug having a dish-shaped head and a notch formed in at least a lower part thereof. A step of press-fitting the plug portion of the member halfway into the through-hole of the tube cylinder; a step of filling a required fluid into the tube cylinder via a notch formed in the plug portion; Further press-fitting a member to bring the plug body and the through-hole into a temporarily sealed state in which the dish-shaped head projects slightly from the top; and the top on the dish-shaped head of the plug member. The support member for support is kept in pressure contact, and in this state, the three members of the tube cylinder, the plug member and the support member are moved between the tube cylinder and the plug member, and between the tube cylinder and the support portion Welding the material so that the material and the dish-shaped head of the plug member and the support member are melt-joined integrally at substantially the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2137106A JP2980343B2 (en) | 1990-05-29 | 1990-05-29 | Gas spring manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2137106A JP2980343B2 (en) | 1990-05-29 | 1990-05-29 | Gas spring manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0434232A JPH0434232A (en) | 1992-02-05 |
| JP2980343B2 true JP2980343B2 (en) | 1999-11-22 |
Family
ID=15190993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2137106A Expired - Lifetime JP2980343B2 (en) | 1990-05-29 | 1990-05-29 | Gas spring manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2980343B2 (en) |
-
1990
- 1990-05-29 JP JP2137106A patent/JP2980343B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0434232A (en) | 1992-02-05 |
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