JPS62185883U - - Google Patents
Info
- Publication number
- JPS62185883U JPS62185883U JP7493486U JP7493486U JPS62185883U JP S62185883 U JPS62185883 U JP S62185883U JP 7493486 U JP7493486 U JP 7493486U JP 7493486 U JP7493486 U JP 7493486U JP S62185883 U JPS62185883 U JP S62185883U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- cylindrical member
- rod body
- pull rod
- 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
Links
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Reciprocating Pumps (AREA)
Description
第１図は本考案の一実施例であるピストンプル
ロツドをそれの製造装置とともに略図的に示す図
である。第２図は上記ピストンプルロツドを備え
たバキユームポンプの正面断面図である。第３図
は本考案の別の実施例において使用される筒部材
の正面断面図である。
１０：ケーシング、３２：ピストン、５０：ピ
ストンプルロツド、５２：ロツド本体、５４：筒
部材、５６：フランジ、５８：ワツシヤ、６０：
抜け止め用大径部、６２：拡径部、６４，６５：
ストツパ治具、６６：外周拘束治具、６８：据込
みパンチ、６９：セレーシヨン、７０：ロツカア
ーム、７２：ピボツト軸、７４：ヨーク部。
FIG. 1 is a diagram schematically showing a piston pull rod according to an embodiment of the present invention together with an apparatus for manufacturing the same. FIG. 2 is a front sectional view of a vacuum pump equipped with the piston pull rod. FIG. 3 is a front sectional view of a cylindrical member used in another embodiment of the present invention. 10: Casing, 32: Piston, 50: Piston pull rod, 52: Rod body, 54: Cylinder member, 56: Flange, 58: Washer, 60:
Large diameter part for retaining, 62: Expanded diameter part, 64, 65:
Stopper jig, 66: Periphery restraint jig, 68: Upsetting punch, 69: Serration, 70: Rocker arm, 72: Pivot shaft, 74: Yoke part.
Claims (1)
延び出すとともにリテーナ部を備え、そのリテー
ナ部のピストン側の面であるリテーナ面において
、一軸線回りに回動するロツカアームの一端部に
形成されたヨーク部を受け、ロツカアームの回動
をピストンの直線的な往復運動に変換するピスト
ンプルロツドにおいて、 そのピストンプルロツドを、ロツド本体と筒部
材とから成るものとし、ロツド本体の一端部を前
記ピストンに連結する一方、そのロツド本体の反
対側の端部に前記筒部材を嵌合し、その筒部材か
ら突出したロツド本体の先端に据込みによつて大
径の抜け止め部を形成するとともに、ロツド本体
の筒部材内に位置する部分の少なくとも一部を直
径方向に膨らませることにより筒部材の内周面に
強く密着させ、その筒部材のピストン側の端面を
前記リテーナ面としたことを特徴とするバキユー
ムポンプのピストンプルロツド。 (2) 前記筒部材の、前記ロツド本体の直径方向
の膨出部が密着させられる内周面にセレーシヨン
が形成されている実用新案登録請求の範囲第１項
記載のピストンプルロツド。[Claims for Utility Model Registration] (1) A locking arm that extends in the axial direction from the piston of the vacuum pump and is provided with a retainer portion, and rotates around one axis on the retainer surface that is the surface of the retainer portion on the piston side. In a piston pull rod that receives a yoke portion formed at one end and converts rotation of a rocker arm into linear reciprocating motion of a piston, the piston pull rod is composed of a rod body and a cylindrical member. , while one end of the rod body is connected to the piston, the cylindrical member is fitted to the opposite end of the rod body, and the tip of the rod body protruding from the cylindrical member is fitted with a large diameter rod by upsetting. At the same time, at least a part of the portion of the rod body located inside the cylindrical member is inflated in the diametrical direction to tightly adhere to the inner peripheral surface of the cylindrical member, and the end surface of the cylindrical member on the piston side is formed. A piston pull rod for a vacuum pump, characterized in that the retainer surface is a piston pull rod. (2) The piston pull rod according to claim 1, wherein a serration is formed on the inner circumferential surface of the cylindrical member to which the diametrical bulge of the rod body is brought into close contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7493486U JPH0329587Y2 (en) | 1986-05-19 | 1986-05-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7493486U JPH0329587Y2 (en) | 1986-05-19 | 1986-05-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62185883U true JPS62185883U (en) | 1987-11-26 |
| JPH0329587Y2 JPH0329587Y2 (en) | 1991-06-24 |
Family
ID=30920614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7493486U Expired JPH0329587Y2 (en) | 1986-05-19 | 1986-05-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0329587Y2 (en) |
-
1986
- 1986-05-19 JP JP7493486U patent/JPH0329587Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0329587Y2 (en) | 1991-06-24 |