JPH0466380U

JPH0466380U -

Info

Publication number: JPH0466380U
Application number: JP10806890U
Authority: JP
Priority date: 1990-10-15
Filing date: 1990-10-15
Publication date: 1992-06-11

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る手動エアポン
プの構造を示すものであつて、同図ａは縦断面図
、同図ｂは同図ａにおけるＡ−Ａ矢視図、同図ｃ
は同図ａにおけるＢ−Ｂ矢視図、第２図は同手動
エアポンプの第２ピストンの変形例を示す部分断
面図、第３図は同手動エアポンプの偏心カム及び
回転ピンの運動の一例を示す説明模式図、第４図
及び第５図は従来の手動エアポンプを示す縦断面
図及び側面図である。符号の説明、１……手動エアポンプ、２……第
１ピストン、３……第２ピストン、４……連結部
分、６……回転軸、７……キー、８……偏心カム
、１０……回転ピン、１１……カーボンフアイバ
ーブツシユ、１２……丸ハンドル、１７……孔部
、１８……第１シリンダ、２０……第１シリンダ
室、２１……第２シリンダ、２２……第２シリン
ダ室、２６……スプリング、２７……圧力吸収部
。 Figure 1 shows the structure of a manual air pump according to an embodiment of the present invention, in which figure a is a longitudinal sectional view, figure b is a view taken along the line A-A in figure a, and figure c
2 is a partial sectional view showing a modification of the second piston of the manual air pump, and FIG. 3 is an example of the movement of the eccentric cam and rotating pin of the manual air pump. The illustrated schematic diagram, FIGS. 4 and 5, are a vertical sectional view and a side view of a conventional manual air pump. Explanation of symbols, 1... Manual air pump, 2... First piston, 3... Second piston, 4... Connecting part, 6... Rotating shaft, 7... Key, 8... Eccentric cam, 10... Rotating pin, 11... Carbon fiber bush, 12... Round handle, 17... Hole, 18... First cylinder, 20... First cylinder chamber, 21... Second cylinder, 22... Second Cylinder chamber, 26...spring, 27...pressure absorption section.

Claims

[Claims for Utility Model Registration] Two coaxial pistons with different diameters are integrally connected, and the movement of both pistons causes the first piston on the larger diameter side of the two pistons to
Air is sucked into a first cylinder chamber surrounded by cylinders and compressed, and the compressed air is then transferred to a second cylinder chamber surrounded by a second piston, which is the smaller diameter side of the two pistons, and a second cylinder. In this manual air pump, an eccentric cam that is eccentrically rotated by hand is provided perpendicular to the connecting portion between the two pistons, and an eccentric cam is inserted between the eccentric cam and the air pump to discharge the compressed air. Attach a pair of rotating pins that can rotate freely in contact with both sides to the above connecting part,
A manual air pump characterized in that both pistons are driven back and forth through the rotation pin by rotation of the eccentric cam.