JPS63157558U - - Google Patents

Info

Publication number
JPS63157558U
JPS63157558U JP4884487U JP4884487U JPS63157558U JP S63157558 U JPS63157558 U JP S63157558U JP 4884487 U JP4884487 U JP 4884487U JP 4884487 U JP4884487 U JP 4884487U JP S63157558 U JPS63157558 U JP S63157558U
Authority
JP
Japan
Prior art keywords
wall
oil
oil chamber
rod portion
plunger
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
JP4884487U
Other languages
Japanese (ja)
Other versions
JPH0639158Y2 (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 JP4884487U priority Critical patent/JPH0639158Y2/en
Publication of JPS63157558U publication Critical patent/JPS63157558U/ja
Application granted granted Critical
Publication of JPH0639158Y2 publication Critical patent/JPH0639158Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Description

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

第1図は本実施例にかかるフリーピストン型オ
ートテンシヨナの断面図、第2図はベルトが緩ん
だ状態の側面図、第3図はベルトが張つた状態の
側面図である。第4図は従来のフリーピストン型
オートテンシヨナの断面図である。 図中、1はボデー、2はプランジヤ、3はロー
ツド部、4はピストン、5は逆止弁を示す。
FIG. 1 is a sectional view of the free piston type autotensioner according to this embodiment, FIG. 2 is a side view of the belt in a relaxed state, and FIG. 3 is a side view of the belt in a tensioned state. FIG. 4 is a sectional view of a conventional free piston type autotensioner. In the figure, 1 is a body, 2 is a plunger, 3 is a rod portion, 4 is a piston, and 5 is a check valve.

Claims (1)

【実用新案登録請求の範囲】 (1) 有底状のボデーと、 該ボデー内に摺動自在に挿入され、該ボデー底
部とでイルが封入された第1油室を形成する一端
と、該ボデー内でオイルが封入された第2油室を
形成する他端とをもち該第2油室に向けて付勢さ
れ、該第1油室と該第2油室とを連通する油路を
もつプランジヤと、 該プランジヤと一体的に形成され、該ボデーか
ら突出したロツド部と、 該ボデーの内壁と該ロツドの外壁との間の空間
に摺動自在に挿入され、該ロツド部の外壁と第1
シール材を介してシールされ、該ボデーの内壁と
第2シール材を介してシールされるとともに、一
端が該第2油室を区画し、かつ該第2油室に向け
て付勢されたピストンと、 該プランジヤの該油路に配置され、該第2油室
から該第1油室へのオイルの流入はゆるすが、そ
の逆流はゆるさない逆止弁とで、構成され、 該ピストンの他端、該ボデーの内壁および該ロ
ツド部の外壁とで規定される空間に貯溜されたオ
イルをもち、 該ピストンの外壁と該ボデイの内壁との間、お
よび、該ピストンの内壁と該ロツド部の外壁との
間を、該オイルでシールしていることを特徴とす
るフリーピストン型オートテンシヨナ。 (2) ボデーは、その底部と反対側の開口を閉塞
する蓋部材をもつ実用新案登録請求の範囲第1項
記載のフリーピストン型オートテンシヨナ。
[Claims for Utility Model Registration] (1) A bottomed body, one end that is slidably inserted into the body and forms a first oil chamber in which an oil is sealed with the bottom of the body; The other end forms a second oil chamber in which oil is sealed in the body, and the oil passage is biased toward the second oil chamber and communicates the first oil chamber and the second oil chamber. a plunger having a plunger; a rod portion integrally formed with the plunger and protruding from the body; and a rod portion slidably inserted into a space between an inner wall of the body and an outer wall of the rod portion, and a rod portion that is slidably inserted into a space between an inner wall of the body and an outer wall of the rod portion; 1st
a piston that is sealed via a sealing material, is sealed via an inner wall of the body and a second sealing material, has one end defining the second oil chamber, and is biased toward the second oil chamber; and a check valve disposed in the oil passage of the plunger, which allows oil to flow from the second oil chamber to the first oil chamber, but does not allow oil to flow backward; The oil is stored in a space defined by the end, the inner wall of the body, and the outer wall of the rod part, and the space between the outer wall of the piston and the inner wall of the body, and between the inner wall of the piston and the rod part. A free piston type autotensioner characterized in that the oil seals between the tensioner and the outer wall. (2) The free piston type autotensioner according to claim 1, wherein the body has a lid member that closes an opening on the opposite side from the bottom of the body.
JP4884487U 1987-03-31 1987-03-31 Free-piston type auto tensioner Expired - Lifetime JPH0639158Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4884487U JPH0639158Y2 (en) 1987-03-31 1987-03-31 Free-piston type auto tensioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4884487U JPH0639158Y2 (en) 1987-03-31 1987-03-31 Free-piston type auto tensioner

Publications (2)

Publication Number Publication Date
JPS63157558U true JPS63157558U (en) 1988-10-17
JPH0639158Y2 JPH0639158Y2 (en) 1994-10-12

Family

ID=30870756

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4884487U Expired - Lifetime JPH0639158Y2 (en) 1987-03-31 1987-03-31 Free-piston type auto tensioner

Country Status (1)

Country Link
JP (1) JPH0639158Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011106497A (en) * 2009-11-13 2011-06-02 Nakagawa Giken:Kk Tensioner device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011106497A (en) * 2009-11-13 2011-06-02 Nakagawa Giken:Kk Tensioner device

Also Published As

Publication number Publication date
JPH0639158Y2 (en) 1994-10-12

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