JPS6038966U

JPS6038966U - overload safety device

Info

Publication number: JPS6038966U
Application number: JP13036383U
Authority: JP
Inventors: 平三郎加藤
Original assignee: 株式会社　三共製作所
Priority date: 1983-08-25
Filing date: 1983-08-25
Publication date: 1985-03-18

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図は従来の過負荷安全装置（トルクリミッタ−）を
カム装置に用いた場合を説明するための一部破断側面図
、第２図乃至第５図は本考案の過負荷安全装置の一実施
例を示し、第２図及び第３図は定常時における該安全装
置の縦断面図及びそのＩ−Ｉ線断面図、第４図及び第５
図は過負荷発生時における該安全装置の縦断面図及び■
−■線断面図、第６図は本考案の他の実施例を示す要部
断面図、第７図は本考案の安全装置が用いられたカム装
置の説明図、第８図は第７図の一部破断拡大図である。１・・・・・・出力軸（入力軸）、２・・・・・・ボス
部材、２ａ・・・溝部、４，５・・・・・・鋼球、６・
・・・・・球面凹部、７・・・・・・テーパースラスト
リング、７ａ・・・・・・傾斜面、９・・・・・・スプ
リング、１０・・・・・・フランジ。第１図第２図Fig. 1 is a partially cutaway side view for explaining the case where a conventional overload safety device (torque limiter) is used in a cam device, and Figs. 2 to 5 are an illustration of the overload safety device of the present invention. An example is shown, and FIGS. 2 and 3 are a longitudinal cross-sectional view of the safety device in a normal state, a cross-sectional view taken along the line I-I, and FIGS. 4 and 5.
The figure is a vertical cross-sectional view of the safety device when an overload occurs and ■
6 is a cross-sectional view of main parts showing another embodiment of the present invention, FIG. 7 is an explanatory diagram of a cam device in which the safety device of the present invention is used, and FIG. It is a partially broken enlarged view. DESCRIPTION OF SYMBOLS 1... Output shaft (input shaft), 2... Boss member, 2a... Groove, 4, 5... Steel ball, 6...
... Spherical recess, 7 ... Tapered thrust ring, 7a ... Inclined surface, 9 ... Spring, 10 ... Flange. Figure 1 Figure 2

Claims

[Scope of utility model registration request]

A cylindrical boss member is attached to the outer periphery of either an input shaft or an output shaft that performs vertical movement so as to be able to slide in the axial direction but not rotate, and a cylindrical boss member is attached to the flange formed at one end of the boss member. A plurality of grooves are drilled radially, balls are loosely fitted into the grooves, and a spherical recess into which a portion of the balls can fit is formed on the outer circumferential surface of the shaft, and the shaft is brought into contact with the balls to cause the balls to fit into the grooves. A tapered thrust ring having an inclined surface formed to press against a spherical recess is attached to the outer periphery of the boss member so as to be slidable in the axial direction, and a flange connected to either the input shaft or the output shaft is attached to the flange. The ball is held in the groove by the end face of the flange and the inclined surface, and the tapered thrust ring is applied by a spring whose one end is fixed to a pressing force adjusting means attached to the boss member. The ball is pressed into the spherical recess, and while the ball is partially fitted in the spherical recess, the vertical motion of the input shaft is transmitted to the output shaft, and when the output shaft is overloaded, the ball is pressed against the spherical recess. A high overload safety device characterized in that a thread ring slides on the tapered thrust ring to disengage the fitting and interrupt transmission between the input shaft and the output shaft.