JPH0428879U

JPH0428879U -

Info

Publication number: JPH0428879U
Application number: JP6915590U
Authority: JP
Priority date: 1990-06-29
Filing date: 1990-06-29
Publication date: 1992-03-09
Anticipated expiration: 2005-06-29
Also published as: JPH0747101Y2

Description

[Brief explanation of the drawing]

第１図は、上軸停止手段および回転体を示す図
で、同図ａは、上軸停止手段と回転体の側面図、
同図ｂは、同図ａに示した上軸停止手段および回
転体を矢符方向から示す平面図、第２図は、伝達
手段としてのアウターチユーブの、糸切り手段と
の接続状態を示す平面図、第３図は、上軸停止手
段による上軸の停止状態を示す平面図、第４図お
よび第５図は、従来の糸切り手段を示す図で、第
４図は、縫い糸の切断をなすメスおよびこれを駆
動させる下軸連結手段の構成状態を示す平面図、
第５図は、第４図に示す下軸連結手段の構成状態
を示す斜視図、第６図は、下軸連結手段と下軸に
設けられたカム体との連結状態を示す平面図であ
る。図において、４……上軸、１０……伝達手段、
６……回転体、６ａ……突出部、５……係止ピン
、６……回転体、９……ピン進出手段、Ａ……下
軸連結手段。 FIG. 1 is a diagram showing the upper shaft stopping means and the rotating body, and FIG. 1a is a side view of the upper shaft stopping means and the rotating body;
Figure b is a plan view showing the upper shaft stopping means and rotating body shown in figure a from the direction of the arrow, and Figure 2 is a plane view showing the state of connection of the outer tube as a transmission means with the thread cutting means. Fig. 3 is a plan view showing the state in which the upper shaft is stopped by the upper shaft stopping means, and Figs. 4 and 5 are views showing conventional thread cutting means. A plan view showing the configuration of a female knife and a lower shaft connecting means for driving the knife;
FIG. 5 is a perspective view showing the configuration of the lower shaft connecting means shown in FIG. 4, and FIG. 6 is a plan view showing the connecting state of the lower shaft connecting means and the cam body provided on the lower shaft. . In the figure, 4... upper shaft, 10... transmission means,
6... Rotating body, 6a... Protrusion, 5... Locking pin, 6... Rotating body, 9... Pin advancing means, A... Lower shaft connecting means.

Claims

[Scope of Claim for Utility Model Registration] A thread trimming device for a sewing machine that has a function of appropriately stopping the drive of a sewing machine after thread trimming operation, which is the final operation of the sewing machine, is performed. a thread cutting means having a lower shaft connection means that connects a scalpel that cuts the sewing thread to a lower shaft of the sewing machine and drives the knife to cut by rotational drive of the lower shaft; , a rotating body that can rotate together with the upper shaft; upper shaft stopping means that engages with a protrusion of the rotating body and can stop rotation of the upper shaft; and stopping the upper shaft in synchronization with driving of the thread cutting means. A thread cutting device for a sewing machine, comprising: a transmission means for transmitting the drive of the thread cutting means to an upper shaft stopping means in order to drive the thread cutting means.