JPS61103509U - - Google Patents
Info
- Publication number
- JPS61103509U JPS61103509U JP18947984U JP18947984U JPS61103509U JP S61103509 U JPS61103509 U JP S61103509U JP 18947984 U JP18947984 U JP 18947984U JP 18947984 U JP18947984 U JP 18947984U JP S61103509 U JPS61103509 U JP S61103509U
- Authority
- JP
- Japan
- Prior art keywords
- communication hole
- check ball
- plunger
- pressure chamber
- check
- 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
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Description
第１図は、本考案の第１の実施例に係る油圧式
バルブリフタの縦断面図、第２図は、第１図の油
圧式バルブリフタに用いられているチエツクボー
ルスプリングの側面図、第３図は、本考案の第２
の実施例に係る油圧式バルブリフタに用いられて
いるチエツクボールスプリングの側面図、第４図
は、エンジンの縦断面図、第５図は、従来の油圧
式バルブリフタの縦断面図、第６図は、従来の油
圧式バルブリフタの作動説明図である。
１……油圧式バルブリフタ、２……リフタボデ
ー、３……プランジヤ、４……内室、５……圧力
室、６……プランジヤの下端壁、７……連通孔、
８……逆止弁、９……圧縮コイルばね、３１……
チエツクボール、３２……チエツクボールスプリ
ング。
1 is a longitudinal sectional view of a hydraulic valve lifter according to a first embodiment of the present invention, FIG. 2 is a side view of a check ball spring used in the hydraulic valve lifter of FIG. 1, and FIG. 3 is a side view of a check ball spring used in the hydraulic valve lifter of FIG. is the second part of this invention
FIG. 4 is a longitudinal sectional view of the engine, FIG. 5 is a longitudinal sectional view of a conventional hydraulic valve lifter, and FIG. FIG. 2 is an explanatory diagram of the operation of a conventional hydraulic valve lifter. DESCRIPTION OF SYMBOLS 1... Hydraulic valve lifter, 2... Lifter body, 3... Plunger, 4... Inner chamber, 5... Pressure chamber, 6... Lower end wall of plunger, 7... Communication hole,
8...Check valve, 9...Compression coil spring, 31...
Check ball, 32...Check ball spring.
Claims (1)
フタボデーに摺動可能に嵌装され内部に内室が郭
定されたプランジヤとを有し、前記リフタボデー
内には前記プランジヤの下端壁によつて上限を限
られた圧力室が形成されており、前記プランジヤ
の下端壁には前記内室と該圧力室とを連通する連
通孔が穿設されており、核連通孔には該連通孔を
通つて前記内室より前記圧力室に向かう流体の流
れのみを許容する逆止弁が設けられており、前記
圧力室には前記プランジヤを前記リフタボデーか
ら引き出す方向に作用する圧縮コイルばねが配置
されており、前記逆止弁は前記連通孔を開閉する
チエツクボールと、該チエツクボールが前記連通
孔を閉じる方向に該チエツクボールを押圧するチ
エツクボールスプリングとから構成されている油
圧式バルブリフタであつて、 前記チエツクボールスプリングは温度が上昇す
るにしたがつて前記チエツクボールを押す力が増
加する形状記憶合金で作られていることを特徴と
する油圧式バルブリフタ。[Claims for Utility Model Registration] It has a cup-shaped lifter body that opens upward, and a plunger that is slidably fitted into the lifter body and has an inner chamber defined therein. A pressure chamber with a limited upper limit is formed by the lower end wall, and a communication hole is formed in the lower end wall of the plunger to communicate the inner chamber and the pressure chamber, and a communication hole is formed in the lower end wall of the plunger. is provided with a check valve that only allows fluid to flow from the inner chamber toward the pressure chamber through the communication hole, and in the pressure chamber is a compression coil that acts in a direction to pull out the plunger from the lifter body. A hydraulic type check valve is provided with a spring, and the check valve is composed of a check ball that opens and closes the communication hole, and a check ball spring that presses the check ball in a direction in which the check ball closes the communication hole. 1. A hydraulic valve lifter, characterized in that the check ball spring is made of a shape memory alloy whose force for pushing the check ball increases as the temperature increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18947984U JPS61103509U (en) | 1984-12-13 | 1984-12-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18947984U JPS61103509U (en) | 1984-12-13 | 1984-12-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61103509U true JPS61103509U (en) | 1986-07-01 |
Family
ID=30746930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18947984U Pending JPS61103509U (en) | 1984-12-13 | 1984-12-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61103509U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010265874A (en) * | 2009-05-18 | 2010-11-25 | Otics Corp | Lash adjuster |
-
1984
- 1984-12-13 JP JP18947984U patent/JPS61103509U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010265874A (en) * | 2009-05-18 | 2010-11-25 | Otics Corp | Lash adjuster |
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