JPS61160875U

JPS61160875U -

Info

Publication number: JPS61160875U
Application number: JP4448985U
Authority: JP
Priority date: 1985-03-27
Filing date: 1985-03-27
Publication date: 1986-10-04
Also published as: JPS6349265Y2

Description

[Brief explanation of the drawing]

第１図はこの考案を具体化したミシンのブロツ
ク回路図、第２図はミシンの正面図、第３図は布
押え足機構を示す斜視図、第４図及び第５図は電
気回路図、第６図はタイムチヤートである。図において、２はミシン主軸、３は駆動モータ
、５は針、７は加工布支持面、１０は布押え足、
１２は駆動手段を構成する電磁ソレノイド、２１
は制御手段、２３は足踏みペダル、２５は第２の
出力手段、ＳＷはスイツチ、ＰＶはペダル踏込み
量検出器（前記ＳＷ，ＰＶにより第１の出力手段
が構成されている）。 Fig. 1 is a block circuit diagram of a sewing machine embodying this invention, Fig. 2 is a front view of the sewing machine, Fig. 3 is a perspective view showing the presser foot mechanism, Figs. 4 and 5 are electrical circuit diagrams, Figure 6 is a time chart. In the figure, 2 is the main shaft of the sewing machine, 3 is the drive motor, 5 is the needle, 7 is the work cloth support surface, 10 is the presser foot,
12 is an electromagnetic solenoid constituting a driving means; 21
2 is a control means, 23 is a foot pedal, 25 is a second output means, SW is a switch, and PV is a pedal depression amount detector (the SW and PV constitute the first output means).

Claims

[Claims for Utility Model Registration] Includes a needle 5 that is moved up and down across a work cloth support surface 7 as the main shaft 2 of the sewing machine rotates, and forms stitches on the work cloth on the work cloth support surface 7. a sewing machine, comprising: a seam forming device; a feed dog that is operated in synchronization with the seam forming device and feeds the work cloth; a presser foot 10 that is vertically movably supported by a frame and presses the workpiece cloth toward the feed dog when placed in an operating position; and a presser foot driving means 12 that moves the presser foot 10 up and down. , a drive motor 3 that rotationally drives the sewing machine main shaft 2;
and a first output means (SW) which outputs a presser foot lowering signal as the foot pedal 23 is depressed, and outputs a speed command signal according to the amount of depression.
, PV); a second output means 25 that outputs a speed command signal different from the speed command signal output from the first output means SW, PV; and the presser foot 10 is disposed in a non-active position. When the foot pedal 23 is operated in a state where the presser foot 10 is
The speed command signal outputted from the first output means SW, PV is invalidated, and the speed command signal outputted from the second output means 25 is enabled and outputted to the drive motor 3, and the presser foot A sewing machine equipped with a presser foot control device, comprising a control means 21 for activating a lowering signal and outputting it to the presser foot driving means 12.