JPH0431303U - - Google Patents

Info

Publication number
JPH0431303U
JPH0431303U JP1990073104U JP7310490U JPH0431303U JP H0431303 U JPH0431303 U JP H0431303U JP 1990073104 U JP1990073104 U JP 1990073104U JP 7310490 U JP7310490 U JP 7310490U JP H0431303 U JPH0431303 U JP H0431303U
Authority
JP
Japan
Prior art keywords
cushion
piston
cushion ring
small diameter
piston rod
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.)
Granted
Application number
JP1990073104U
Other languages
Japanese (ja)
Other versions
JPH0744805Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1990073104U priority Critical patent/JPH0744805Y2/en
Priority to KR1019910007729A priority patent/KR920002955A/en
Publication of JPH0431303U publication Critical patent/JPH0431303U/ja
Priority to KR2019940010073U priority patent/KR940006235Y1/en
Application granted granted Critical
Publication of JPH0744805Y2 publication Critical patent/JPH0744805Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図、第２図、第３図は本考案の実施例の要
部の拡大縦断正面図で、第１図、第２図はシリン
ダヘツド側にクツシヨン機構を構成したもので、
第１図はクツシヨン行程の終期、第２図は作動始
動行程の初期、第３図はシリンダボトム側にクツ
シヨン機構を構成したものでクツシヨン行程の終
期を示す。第４図、第５図、第６図は従来技術の
シリンダヘツド側にクツシヨン機構を構成したも
ので、第４図は縦断正面図、第５図はクツシヨン
行程の終期の要部の拡大縦断正面図、第６図は作
動始動行程の初期の要部の拡大縦断正面図を示す
。 ２……シリンダボトム、２ａ……内周、３……
シリンダヘツド、３ａ……内周、４ｂ……小径部
、４ｈ……ピストンロツド、４ｉ……段部、５…
…ピストン、９ａ……外周、９ｄ……切欠き、９
ｇ……端面、９ｈ……クツシヨンリング、９ｉ…
…肩部、９ｊ……内周、Ａ……ボトム側の圧力室
、Ｂ……ヘツド側の圧力室、Ｃ……シリンダ内径
。 1, 2, and 3 are enlarged longitudinal sectional front views of the main parts of an embodiment of the present invention, and FIGS. 1 and 2 show a cushion mechanism configured on the cylinder head side.
FIG. 1 shows the final stage of the cushion stroke, FIG. 2 shows the initial stage of the operation start stroke, and FIG. 3 shows the final stage of the cushion stroke, with the cushion mechanism configured on the bottom side of the cylinder. Figures 4, 5, and 6 show conventional art in which the cushion mechanism is configured on the cylinder head side. Figure 4 is a vertical sectional front view, and Figure 5 is an enlarged vertical sectional front view of the main part at the end of the cushion stroke. FIG. 6 shows an enlarged longitudinal sectional front view of the main part at the initial stage of the operation start-up stroke. 2... Cylinder bottom, 2a... Inner circumference, 3...
Cylinder head, 3a...inner circumference, 4b...small diameter section, 4h...piston rod, 4i...stepped section, 5...
...Piston, 9a...Outer circumference, 9d...Notch, 9
g...End face, 9h...Cushion ring, 9i...
...Shoulder, 9j...Inner periphery, A...Bottom side pressure chamber, B...Head side pressure chamber, C...Cylinder inner diameter.

Claims (1)

【実用新案登録請求の範囲】 ピストンに隣接するピストンロツドに小径部を
設け、この小径部にクツシヨンリングを遊嵌し、
このクツシヨンリングの外周がピストンの作動終
端においてシリンダボトム又はシリンダヘツドの
内周との間にクツシヨン絞りを形成するとともに
、このクツシヨン絞りが作用したとき前記ピスト
ンロツドとクツシヨンリングとの間に圧力室側と
排出側との間を閉塞し、ピストンの作動始動行程
において供給側と圧力室側とを接続する逆止弁機
構を構成するクツシヨン機構において、 前記逆止弁機構を、ピストンロツドの小径部に
連設した段部と、クツシヨンリングの内周に設け
てあり前記段部に当接する肩部とで構成したこと
を特徴とする油圧シリンダのクツシヨン装置。[Scope of Claim for Utility Model Registration] A small diameter portion is provided in the piston rod adjacent to the piston, a cushion ring is loosely fitted into this small diameter portion,
The outer periphery of this cushion ring forms a cushion throttle between the cylinder bottom or the inner circumference of the cylinder head at the end of the piston's operation, and when this cushion throttle acts, a pressure chamber is formed between the piston rod and the cushion ring. In a cushion mechanism constituting a check valve mechanism that closes the gap between the side and the discharge side and connects the supply side and the pressure chamber side during the piston's starting stroke, the check valve mechanism is installed in a small diameter portion of the piston rod. 1. A cushioning device for a hydraulic cylinder, characterized in that the cushioning device comprises a stepped portion that is connected to the cushion ring, and a shoulder portion that is provided on the inner periphery of a cushion ring and comes into contact with the stepped portion.
JP1990073104U 1990-07-09 1990-07-09 Cushion device for hydraulic cylinder Expired - Fee Related JPH0744805Y2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1990073104U JPH0744805Y2 (en) 1990-07-09 1990-07-09 Cushion device for hydraulic cylinder
KR1019910007729A KR920002955A (en) 1990-07-09 1991-05-14 Cushion device of hydraulic cylinder
KR2019940010073U KR940006235Y1 (en) 1990-07-09 1994-05-07 Cushion device in hydraulic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990073104U JPH0744805Y2 (en) 1990-07-09 1990-07-09 Cushion device for hydraulic cylinder

Publications (2)

Publication Number Publication Date
JPH0431303U true JPH0431303U (en) 1992-03-13
JPH0744805Y2 JPH0744805Y2 (en) 1995-10-11

Family

ID=31611640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990073104U Expired - Fee Related JPH0744805Y2 (en) 1990-07-09 1990-07-09 Cushion device for hydraulic cylinder

Country Status (2)

Country Link
JP (1) JPH0744805Y2 (en)
KR (1) KR920002955A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11344009A (en) * 1998-05-29 1999-12-14 Hitachi Constr Mach Co Ltd Piston fastening structure of hydraulic cylinder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6581457B2 (en) 2015-10-01 2019-09-25 Ｋｙｂ−Ｙｓ株式会社 Fluid pressure cylinder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3080107U (en) * 2001-01-12 2001-09-14 ユニチカグラスファイバー株式会社 Assembled fence

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6083840A (en) * 1983-10-17 1985-05-13 吉田工業株式会社 Transfer wheel and transfer molded shape thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3080107U (en) * 2001-01-12 2001-09-14 ユニチカグラスファイバー株式会社 Assembled fence

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11344009A (en) * 1998-05-29 1999-12-14 Hitachi Constr Mach Co Ltd Piston fastening structure of hydraulic cylinder

Also Published As

Publication number Publication date
KR920002955A (en) 1992-02-28
JPH0744805Y2 (en) 1995-10-11

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Legal Events

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LAPS Cancellation because of no payment of annual fees