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sewing machine

A sewing machine and motor technology, which is applied to sewing machine components, sewing equipment, sewing machine control devices, etc., can solve the problems of lightening and incapable of fully realizing the burden of operators, and achieves suppression of confusion and reduction of confusion and burden of stitch formation. lightening effect

Active Publication Date: 2018-07-10
JUKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there arises a problem that it is impossible to sufficiently reduce the burden on the operator during the lifting of the cloth presser foot.

Method used

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  • sewing machine
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Experimental program
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Effect test

Embodiment Construction

[0049] [Structure of sewing machine]

[0050] Next, a sewing machine 10 as an embodiment of the present invention will be described with reference to the drawings.

[0051] sewing machine 10 as figure 1 As shown, there are: a sewing machine main body 1, which is provided on the sewing machine table T; ; and the control unit 90, which centrally controls each part of the sewing machine.

[0052] Sewing machine body 1 such as figure 1 A sewing machine frame 20 having a substantially U-shaped outer shape when viewed from the side is shown. The sewing machine frame 20 has: a sewing machine arm part 21 which forms the upper part of the sewing machine main body 1 and extends in the left-right direction; a sewing machine base part 22 which forms the lower part of the sewing machine main body 1 and extends in the left-right direction; and a longitudinal body part 23 which The sewing machine arm portion 21 is connected to the sewing machine base portion 22 .

[0053] This sewing ma...

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Abstract

PROBLEM TO BE SOLVED: To prevent a malfunction of a cloth presser while reducing a burden of operation of an operating lever.SOLUTION: The sewing machine includes: a sewing machine motor 34; a cloth presser 41; a lifting-up motor 42 of the presser for imparting a rising motion to the cloth presser; an operating lever 11 by which an operator inputs an instruction of a rising motion of the cloth presser; a detection part 12 for detecting an occurrence of a change in an oscillation angle of the operating lever; and a control part 90 for controlling a motion of the lifting-up motor. The control part lifts up the cloth presser to a cloth releasing height by the lifting-up motor of the presser when the detection part detects a change in an oscillation angle of the operating lever while the sewing machine is suspended, and prohibits a rising motion of the cloth presser by the lifting-up motor of the presser or lifts up the cloth presser to a regulation height which requires less amount of rising motion than that of the cloth releasing height when the detection part detects a change in an oscillation angle of the operating lever while the sewing machine is operated.

Description

technical field [0001] The present invention relates to a sewing machine with a presser foot lifting device. Background technique [0002] A conventional sewing machine has a structure in which a cloth presser holding an object to be sewn is raised by an operator applying a force to a knee lever attached to a table mounted on the sewing machine. [0003] However, since the knee lever is operated against a spring that applies a material holding pressure to the cloth presser to raise the cloth presser, repeating the lifting and lowering of the cloth presser imposes a burden on the worker. [0004] Therefore, in recent years, there has been proposed a sewing machine equipped with an actuator that applies an upward motion to the cloth presser (for example, refer to Patent Document 1). [0005] In the case of the above-mentioned sewing machine, when the knee switch detects the input of the instruction input of the lifting operation of the cloth presser applied to the knee lever,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B69/00
CPCD05B29/02D05B69/30D05D2205/32D05D2305/36
Inventor 伊藤文夫
Owner JUKI CORP
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