JPH0449072U

JPH0449072U -

Info

Publication number: JPH0449072U
Application number: JP9210390U
Authority: JP
Priority date: 1990-08-31
Filing date: 1990-08-31
Publication date: 1992-04-24

Description

[Brief explanation of the drawing]

第１図および第２図はそれぞれ本考案に係るミ
シンの全回転釜構造の実施例を示す要部の縦断面
図、第３図は従来のミシンの全回転釜構造を示す
要部の縦断面図である。１……下軸、４……第１潤滑油通路、５……外
釜、６……基部、９……ねじ、１０……外釜本体
、１４……ガイド溝、１６……内釜、１７……ガ
イド突起、２０……円形凹部、２１……第２潤滑
油通路、２２……放射方向通路、２３……軸方向
通路、２４……過室、２５，２６……過部材
。 1 and 2 are longitudinal cross-sectional views of the main parts showing an embodiment of the full-rotation hook structure of a sewing machine according to the present invention, respectively, and FIG. 3 is a longitudinal cross-section of the main parts showing the full-rotation hook structure of a conventional sewing machine. It is a diagram. 1... Lower shaft, 4... First lubricating oil passage, 5... Outer pot, 6... Base, 9... Screw, 10... Outer hook body, 14... Guide groove, 16... Inner hook, 17... Guide protrusion, 20... Circular recess, 21... Second lubricating oil passage, 22... Radial direction passage, 23... Axial direction passage, 24... Over chamber, 25, 26... Over member.

Claims

[Scope of utility model registration request]

An outer hook is supported at the end of a lower shaft which is rotationally driven and has a first lubricating oil passage formed therein, and an inner hook housing a bobbin is supported inside the outer hook so as to be rotatable relative to the outer hook. In the full-rotation hook structure of the sewing machine, the outer hook has a second lubricating oil passage that communicates with the first lubricating oil passage and supplies lubricating oil to a sliding surface with the inner hook. In the oil passage,
A full-rotation hook structure for a sewing machine, characterized in that an oil amount limiting member is provided to limit the amount of lubricating oil supplied.