JPS5982486U - sewing machine thread cutting device - Google Patents

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

【図面の簡単な説明】[Brief explanation of the drawing]

第１図、第２図はこの考案の一実施例装置の底面図、第
３図は一実施例の要部底面斜視図である。 １・・・釜軸、３・・・カム体、４・・・移動軸、６・
・・係合ピン、８・・・作動腕、１０・・・ソレノイド
。1 and 2 are bottom views of an apparatus according to an embodiment of this invention, and FIG. 3 is a bottom perspective view of essential parts of an embodiment. 1... Hook shaft, 3... Cam body, 4... Moving axis, 6...
... Engagement pin, 8... Operating arm, 10... Solenoid.

Claims (1)

【実用新案登録請求の範囲】 ミシンベッド下方の機枠に回動可能に支持し主軸と連動
して回転する釜軸と、　　　　　　゛釜軸に嵌合固定し
周面にカム溝を有するカム体と、 釜軸と平行に移動可能に機枠に支持した移動軸と、 ゛カム体のカム溝に係脱自回能となるよう移動軸の移動
方向との直交方向に移動可能に移動軸に支持し常にはカ
ム溝から離脱する方向に作用する弾性力を受ける保合ピ
ンと、 保合ピンに対向する押圧面を有し係合ピンをその弾性力
に抗してカム溝方向に係合させるよう押−玉保持する作
用位置と保合ピンをその弾性力によリカム溝から離脱す
る不作用位置とに移動可能に機枠に支持し且つ作用位置
において押圧面を釜軸軸線に平行するように形成した作
動腕と、保合ピンをカム溝に係脱するように作動腕を移
動するソレノイドと、 移動軸に連結し移動軸の軸方向移動により駆動する可動
刃を備えた糸切り機構と、 よりなるミシンの糸切り装置。[Scope of claim for utility model registration] A hook shaft that is rotatably supported on the machine frame below the sewing machine bed and rotates in conjunction with the main shaft, and a cam body that is fitted and fixed to the hook shaft and has a cam groove on its circumferential surface. , A moving shaft supported on the machine frame so as to be movable parallel to the rotary hook shaft, and a moving shaft supported movably in the direction orthogonal to the moving direction of the moving shaft so that it can engage and detach from the cam groove of the cam body. However, it has a retaining pin that receives an elastic force that normally acts in the direction of separating from the cam groove, and a pressing surface that faces the retaining pin, so that the engaging pin is engaged in the cam groove direction against the elastic force. The retaining pin is movably supported on the machine frame between an active position where the push ball is held and a non-active position where the retaining pin is separated from the recam groove by its elastic force, and the pressing surface is parallel to the hook shaft axis in the active position. a thread trimming mechanism equipped with a formed working arm, a solenoid that moves the working arm so as to engage and disengage the retaining pin from the cam groove, and a movable blade connected to the moving shaft and driven by the axial movement of the moving shaft; A thread cutting device for a sewing machine.