JPH0521669B2 - - Google Patents
Info
- Publication number
- JPH0521669B2 JPH0521669B2 JP59211941A JP21194184A JPH0521669B2 JP H0521669 B2 JPH0521669 B2 JP H0521669B2 JP 59211941 A JP59211941 A JP 59211941A JP 21194184 A JP21194184 A JP 21194184A JP H0521669 B2 JPH0521669 B2 JP H0521669B2
- Authority
- JP
- Japan
- Prior art keywords
- hole
- lower cap
- ring body
- shock absorber
- welding
- 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
- 238000003466 welding Methods 0.000 claims description 24
- 239000006096 absorbing agent Substances 0.000 claims description 16
- 230000035939 shock Effects 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 4
- 238000005304 joining Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/002—Resistance welding; Severing by resistance heating specially adapted for particular articles or work
-
- 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
- F16F9/32—Details
- F16F9/43—Filling or drainage arrangements, e.g. for supply of gas
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、シヨツクアブソーバの製造方法に係
り、特にロアキヤツプとリング体とを接合する方
法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a shock absorber, and particularly to a method of joining a lower cap and a ring body.
第６図及び第７図に基いて従来例を説明する。
図において、１はシヨツクアブソーバのアウタチ
ユーブ、２はロアキヤツプを示し、該ロアキヤツ
プ２は前記アウタチユーブ１に接合されている。
このキヤツプ２の中央部にはシヨツクアブソーバ
内部にオイルやガスを封入するための貫通孔３が
穿設されている。４は栓体で、該栓体４は前記貫
通孔３に圧入されて、内部のオイルやガスを封入
する。５はリング体を示し、該リング体５は、前
記栓体４を突起とするプロジエクシヨン溶接によ
りロアキヤツプ２と接合されており、更にアーク
溶接で周囲に補強部６が形成されている。
A conventional example will be explained based on FIGS. 6 and 7.
In the figure, reference numeral 1 indicates an outer tube of the shock absorber, and reference numeral 2 indicates a lower cap, which is joined to the outer tube 1.
A through hole 3 is bored in the center of the cap 2 for sealing oil or gas inside the shock absorber. Reference numeral 4 denotes a plug body, which is press-fitted into the through hole 3 to seal in oil or gas therein. Reference numeral 5 denotes a ring body. The ring body 5 is joined to the lower cap 2 by projection welding using the plug body 4 as a protrusion, and a reinforcing portion 6 is further formed around the circumference by arc welding.
ところが、上記従来例では、ロアキヤツプ２の
リング体５との対向部は略平面状であるため、前
記栓体４を突起とするプロジエクシヨン溶接では
接合面積が大きくならず、必然的に上記の如くア
ーク溶接による補強部６の形成が必要となり、溶
接工程に２工程を要する問題があつた。また、前
記プロジエクシヨン溶接時に通常リング体５をロ
アキヤツプ２に対して押圧するが、この時、ロア
キヤツプ２の栓体４周囲は略平面状であるため、
前記リング体５の押圧力によつて第７図に示した
如くに変形して貫通孔３が拡がつて該貫通孔３に
よる栓体４の挟持力が弱まつて、内部に封入され
たガスが漏れ出す恐れがあり、また溶接不良も発
生しやすく、不良率が高いという問題があつた。 However, in the above conventional example, since the portion of the lower cap 2 facing the ring body 5 is substantially flat, the joint area cannot be increased by projection welding using the plug body 4 as a protrusion, and the above-mentioned problem is inevitably caused. Thus, the reinforcing portion 6 had to be formed by arc welding, and there was a problem in that the welding process required two steps. Further, during the projection welding, the ring body 5 is usually pressed against the lower cap 2, but at this time, since the area around the plug body 4 of the lower cap 2 is approximately flat,
Due to the pressing force of the ring body 5, the through hole 3 is deformed and expanded as shown in FIG. 7, and the clamping force of the plug body 4 by the through hole 3 is weakened, so that the gas sealed inside is There was a problem that there was a risk of leakage, welding defects were likely to occur, and the defective rate was high.
本発明は、従来のシヨツクアブソーバの製造方
法では、ロアキヤツプとリング体との溶接に２工
程を要するという問題点及びリング体のロアキヤ
ツプに対する押圧力によつてロアキヤツプが変形
してガス漏れの恐れやそれに伴なう溶接不良発生
の問題点を解決せんとするものである。
The present invention solves the problems that the conventional shock absorber manufacturing method requires two steps for welding the lower cap and the ring body, and also that the lower cap is deformed due to the pressing force of the ring body against the lower cap, resulting in the risk of gas leakage. This is intended to solve the problem of welding defects that occur.
本発明は、シヨツクアブソーバ用の先端部がほ
ぼ円錐状のロアキヤツプの該先端部に頂部を形成
し、該頂部に貫通孔を設け、該貫通孔からシヨツ
クアブソーバ封入用のオイル及び、又はガスを注
入した後、前記貫通孔に球状でその直径が前記貫
通孔長さ以下である栓体を圧入して前記ロアキヤ
ツプの頂部にリング体を押圧しつつ抵抗溶接にて
接合することを特徴とするシヨツクアブソーバの
製造方法を要旨とし、より一層の栓体のシール性
向上などを図つたものである。 In the present invention, a lower cap for a shock absorber having a substantially conical tip has a top formed at the top, a through hole is provided in the top, and oil and/or gas for filling the shock absorber is injected through the through hole. After that, a spherical plug body whose diameter is equal to or less than the length of the through hole is press-fitted into the through hole, and the ring body is joined to the top of the lower cap by resistance welding while being pressed. The gist of this invention is a manufacturing method, with the aim of further improving the sealing performance of the plug.
以下、本発明を図面の実施例に基いて詳細に説
明する。第１図は本発明に係る製造方法により製
造したシヨツクアブソーバの断面図、第２図は同
要部拡大断面図を示す。シヨツクアブソーバ用の
ロアキヤツプ２の先端部はほぼ円錐状に形成さ
れ、その頂部７に貫通孔３が穿設されていると共
に該貫通孔３にその直径が貫通孔３の長さ以下で
ある鋼球からなる栓体４が圧入されている。リン
グ体５とロアキヤツプ２は、前記頂部７の部分で
抵抗溶接にて接合されている。８は接合部を示
す。また、９はプレツシヤーチユーブ、１０はピ
ストンロツド、１１はピストン部を示す。
Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings. FIG. 1 is a sectional view of a shock absorber manufactured by the manufacturing method according to the present invention, and FIG. 2 is an enlarged sectional view of the same essential parts. The tip of the lower cap 2 for the shock absorber is formed into a substantially conical shape, and a through hole 3 is bored in the top 7 of the lower cap 2, and a steel ball whose diameter is equal to or less than the length of the through hole 3 is provided in the through hole 3. A plug body 4 consisting of is press-fitted. The ring body 5 and the lower cap 2 are joined at the top portion 7 by resistance welding. 8 indicates a joint. Further, 9 is a pressure tube, 10 is a piston rod, and 11 is a piston portion.
第３図は栓体の圧入方法を示す断面図、第４図
は抵抗溶接方法を示す断面図であり、これらに基
いて第１図及び第２図に示したシヨツクアブソー
バの製造方法を説明する。筒状の治具１２を用い
てロアキヤツプ２の貫通孔３よりオイル及びガス
をシヨツクアブソーバ内に入れ、栓体圧入装置１
３により栓体４を貫通孔３に圧入し、オイル及び
ガスを封入する。次に、第４図に示した如く、該
リング体５及びロアキヤツプ２を電極１５，１６
にリング体５をロアキヤツプ２の頂部７に押圧し
た状態で取り付け、溶接電源１７より通電を開始
して抵抗溶接によりリング体５をロアキヤツプ２
に接合する。具体的溶接条件の一例を示すと、押
圧力700Kg、電流値（交流）18〜19kA、通電時間
24サイクルにて溶接したところ、引張強度が
23ton以上の接合をすることができた。 Fig. 3 is a cross-sectional view showing the method of press-fitting the plug, and Fig. 4 is a cross-sectional view showing the resistance welding method. Based on these, the method of manufacturing the shock absorber shown in Figs. 1 and 2 will be explained. . Using a cylindrical jig 12, oil and gas are introduced into the shock absorber through the through hole 3 of the lower cap 2, and the plug press-fitting device 1 is inserted.
3, the plug body 4 is press-fitted into the through hole 3, and oil and gas are sealed therein. Next, as shown in FIG. 4, the ring body 5 and lower cap 2 are connected to the electrodes 15, 16.
Attach the ring body 5 to the top 7 of the lower cap 2 in a pressed state, start applying electricity from the welding power source 17, and attach the ring body 5 to the lower cap 2 by resistance welding.
to be joined to. An example of specific welding conditions is a pressing force of 700 kg, current value (AC) of 18 to 19 kA, and energizing time.
When welded in 24 cycles, the tensile strength was
We were able to join over 23 tons.
第５図は本発明の他実施例を示す要部断面図で
頂部７′をロアキヤツプ２の中央部のみを外方に
湾曲させることにより形成したものである。その
他の構成及び製造方法については前記実施例と同
様なので同一部分に同一符号を付して説明は省略
する。 FIG. 5 is a sectional view of a main part of another embodiment of the present invention, in which the top portion 7' is formed by curving only the central portion of the lower cap 2 outward. The other configurations and manufacturing methods are the same as those in the previous embodiment, so the same parts are given the same reference numerals and explanations will be omitted.
本発明によれば、貫通孔にシヨツクアブソーバ
封入用のオイルまたはガスを注入して貫通孔に球
状の栓体を圧入し、ロアキヤツプの頂部にリング
体を押圧しつつ抵抗溶接にて接合すれば、ロアキ
ヤツプの先端部がほぼ円錐状であることから、リ
ング体による押圧により貫通孔が狭まるような力
が頂部に加わり、貫通孔による栓体の挟持力が増
大する。また、このときロアキヤツプ頂部の貫通
孔のリング体側が他の側より狭まるように該挟持
力は働くが、貫通孔に圧入した栓体が球状でその
直径が貫通孔長さ以下であることから、貫通孔の
リング体側が栓体の直径より狭まることを妨げな
い。よつて、シヨツクアブソーバ封入用のオイル
及び、又はガスをしつかりシールしてガスの漏れ
出しなどを防止でき、従つて、それに伴う溶接不
良の発生もない。更に、ロアキヤツプの前記頂部
構造により、抵抗溶接時の加圧、通電及び発熱時
の熱伝導をスムーズにして溶接時の散りを減少さ
せて接合面積を拡大することができ、これにより
従来のようなアーク溶接による補強部の形成が不
要となり、ロアキヤツプとリング体の溶接を１工
程で完了させることができる。また、頂部の形成
も、溶接時にリング体を押圧して変形させた状態
で溶接することから、高精度である必要はなく、
加工が容易である。
According to the present invention, oil or gas for filling the shock absorber is injected into the through hole, a spherical plug is press-fitted into the through hole, and the ring body is pressed and joined to the top of the lower cap by resistance welding. Since the tip of the lower cap is substantially conical, the pressure exerted by the ring body applies a force to the top that narrows the through hole, increasing the force with which the through hole holds the stopper. Also, at this time, the clamping force acts so that the ring body side of the through hole at the top of the lower cap is narrower than the other side, but since the plug press-fitted into the through hole is spherical and its diameter is less than the length of the through hole, This does not prevent the ring body side of the through hole from becoming narrower than the diameter of the plug body. Therefore, the oil and/or gas contained in the shock absorber can be tightly sealed to prevent leakage of the gas, and there is no occurrence of welding defects associated with this. Furthermore, the top structure of the lower cap allows for smooth heat conduction during pressure, energization, and heat generation during resistance welding, reduces spatter during welding, and expands the joint area. There is no need to form a reinforcing part by arc welding, and welding of the lower cap and ring body can be completed in one step. In addition, the formation of the top does not need to be highly precise, as the ring body is pressed and deformed during welding.
Easy to process.
第１図は本発明に係る製造方法により製造した
シヨツクアブソーバの断面図、第２図は同要部拡
大断面図、第３図は栓体の圧入方法を示す断面
図、第４図は抵抗溶接方法を示す断面図、第５図
は本発明の他実施例を示す要部断面図、第６図は
従来例を示す要部断面図、第７図は第６図の要部
拡大断面図である。
２……ロアキヤツプ、３……貫通孔、４……栓
体、５……リング体、７，７′……頂部。
Fig. 1 is a sectional view of a shock absorber manufactured by the manufacturing method according to the present invention, Fig. 2 is an enlarged sectional view of the same main part, Fig. 3 is a sectional view showing the method of press-fitting the plug body, and Fig. 4 is resistance welding. FIG. 5 is a cross-sectional view of a main part showing another embodiment of the present invention, FIG. 6 is a cross-sectional view of a main part showing a conventional example, and FIG. 7 is an enlarged cross-sectional view of a main part of FIG. be. 2...Lower cap, 3...Through hole, 4...Plug body, 5...Ring body, 7, 7'...Top part.
Claims (1)
のロアキヤツプの該先端部に頂部を形成し、該頂
部に貫通孔を設け、該貫通孔からシヨツクアブソ
ーバ封入用のオイル及び、又はガスを注入した
後、前記貫通孔に球状でその直径が前記貫通孔長
さ以下である栓体を圧入して前記ロアキヤツプの
頂部にリング体を押圧しつつ抵抗溶接にて接合す
ることを特徴とするシヨツクアブソーバの製造方
法。1. After forming a top at the tip of a lower cap having a substantially conical tip for a shock absorber, providing a through hole in the top, and injecting oil and/or gas for filling the shock absorber through the through hole, A method for manufacturing a shock absorber, comprising press-fitting a plug body having a spherical shape and a diameter equal to or less than the length of the through-hole into the through-hole, and joining the ring body to the top of the lower cap by resistance welding while pressing the ring body. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21194184A JPS6188982A (en) | 1984-10-09 | 1984-10-09 | Manufacture of shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21194184A JPS6188982A (en) | 1984-10-09 | 1984-10-09 | Manufacture of shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6188982A JPS6188982A (en) | 1986-05-07 |
| JPH0521669B2 true JPH0521669B2 (en) | 1993-03-25 |
Family
ID=16614223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21194184A Granted JPS6188982A (en) | 1984-10-09 | 1984-10-09 | Manufacture of shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6188982A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4338722C1 (en) * | 1993-11-12 | 1994-11-24 | Fichtel & Sachs Ag | Method and device for filling and closing a piston/cylinder unit |
| DE10060057C2 (en) * | 2000-12-02 | 2002-10-24 | Thyssen Krupp Bilstein Gmbh | Formation of a mounting eye and a bottom of a vibration damper |
| CN102699510A (en) * | 2012-06-21 | 2012-10-03 | 天津天德减震器有限公司 | Anti-burning tooling for electric resistance welding working face of piston rod of shock absorber |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53160587U (en) * | 1977-05-23 | 1978-12-15 | ||
| JPS55139538U (en) * | 1979-03-26 | 1980-10-04 | ||
| JPS637430Y2 (en) * | 1981-04-10 | 1988-03-02 |
-
1984
- 1984-10-09 JP JP21194184A patent/JPS6188982A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6188982A (en) | 1986-05-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |