JPS58173695U

JPS58173695U - Multi-stage screwdriver

Info

Publication number: JPS58173695U
Application number: JP7057282U
Authority: JP
Inventors: 雅弘井上
Original assignee: ピ−・エス・コンクリ−ト株式会社; 有限会社丸山鉄工所
Priority date: 1982-05-17
Filing date: 1982-05-17
Publication date: 1983-11-19

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は、本考案の多段スクリュージヤツキの実施例の
使用例を示すテーブルリフタの側面図、第２図、第３図
は本考案の実施例の縦断面図、第４図はクラッチの斜視
図である。第２図は収縮した状態、第３図は伸張状態を
示す。１・・・・・・荷台、２・・・・・・リンク、３・・・
・・・雄ねじ棒、５．６・・・・・・同心円筒、７，８
・・・・・・ナツト、９．）１０・・・・・・案内片、
１１．　１２．　１８．　１９．　２０゜２１・・・・
・・かみ合いクラッチ、１３・・・・・・最外部外径に
螺合したナツト、１４・・・・・・回転装置、１５・・
・・・・ベース、１７・・・・・・ボールベアリング。Fig. 1 is a side view of a table lifter showing an example of the use of the embodiment of the multi-stage screw jack of the present invention, Figs. 2 and 3 are longitudinal sectional views of the embodiment of the invention, and Fig. 4 is a view of the clutch FIG. FIG. 2 shows the contracted state, and FIG. 3 shows the extended state. 1... Loading platform, 2... Link, 3...
...Male thread rod, 5.6...Concentric cylinder, 7,8
・・・・・・Natsuto, 9. )10... Information piece,
11. 12. 18. 19. 20°21...
... Dog clutch, 13 ... Nut screwed on the outermost outer diameter, 14 ... Rotating device, 15 ...
...Base, 17...Ball bearing.

Claims

[Scope of utility model registration request]

A male threaded rod located at the center and fixed to the loading platform at its upper end, a plurality of concentric cylinders fitted onto the male threaded rod and having male threads on their outer diameters and whose inner diameters form guide tubes, and each outer cylinder screwed into each male thread. A nut fixed to each upper end, a guide piece fixed to each lower end of the male threaded rod and the concentric cylinder and sliding on the inner surface of each outer cylinder, and between the guide piece and each of the nuts and between each guide piece. A multi-stage screw jack consisting of dog clutches provided respectively, a rotating device for rotating a nut screwed onto the outermost outer diameter, and a base to which the rotating device is fixed.