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Sewing machine

A sewing machine and motor technology, applied in the field of sewing machines, can solve problems such as poor efficiency, large circuit boards, complex mechanism configuration, etc., and achieve the effect of reducing costs

Inactive Publication Date: 2013-04-10
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the sewing machine needs space for arranging the motor in the machine base, the arrangement of the mechanism in the machine base becomes complicated
Sewing machines increase the size of circuit boards due to the addition of motors
However, since the function of the added motor given to the sewing machine is only to move the cloth feed mechanism, there is a problem of poor efficiency.

Method used

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Examples

Experimental program
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Embodiment Construction

[0030] A sewing machine 1 according to a first embodiment of the present invention will be described with reference to the drawings. figure 1 The upper side, the lower side, the right side, the left side, the front side, and the back side of are respectively the upper side, the lower side, the right side, the left side, the front side, and the rear side of the sewing machine 1 .

[0031] Such as figure 1 As shown, the sewing machine 1 has a base portion 2 , a pillar portion 3 and an arm portion 4 . The stand part 2 is attached to the recessed part (illustration omitted) of the upper surface of the table 20 from above. The pillar portion 3 extends upward from the right end of the base portion 2 . The arm portion 4 extends leftward from the upper end of the pillar portion 3 . The arm portion 4 faces the upper surface of the base portion 2 . The machine arm 4 has a depression bar 44 below the left end (refer to Figure 12 ). Presser bar 44 is equipped with presser foot 17 a...

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PUM

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Abstract

The invention provides a sewing machine which can enable a motor capable of moving a cloth feeding mechanism to be used for other uses. The motor comprises a driving shaft which has a groove cam and a cam. A power transmission mechanism is respectively connected to the groove cam and a cloth feeding table. The sewing machine is rotated in a direction and an opposite direction in the range of a first angle through the driving shaft. The groove cam enables the power transmission mechanism to move. The power transmission mechanism enables the cloth feeding table to move in a horizontal direction. The moving mechanism is disposed at the rear side of the cam. A first connecting member is disposed at the left side of the moving mechanism and is provided with a rolling column for the cam, and the rolling column is connected to a moving cutter. The driving shaft is rotated to a second angle different from the first angle, and thereby the cam enables the moving mechanism to move. The moving mechanism enables to the rolling column to move at a position where the rolling column contacts with the cam.

Description

technical field [0001] The present invention relates to a sewing machine which utilizes separate motors to drive a main shaft and a cloth feeding mechanism. Background technique [0002] There is a sewing machine in which a main shaft and a cloth feeding mechanism are driven by separate motors. Since this sewing machine can freely control the cloth feed amount, various patterns can be easily sewn. For example, a cloth feed control device for a sewing machine disclosed in Japanese Patent Laid-Open No. 92444 of 1979 transmits the drive of a cloth feed motor to a cloth feed stand on which feed dogs are arranged via a link mechanism. When the driving shaft of the cloth feeding motor rotates back and forth within a predetermined angle, the link mechanism makes the cloth feeding table move back and forth along the cloth feeding direction of the sewing machine. The sewing machine disclosed in the aforementioned gazette includes, in addition to a motor for driving the main shaft, ...

Claims

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Application Information

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IPC IPC(8): D05B27/02D05B65/00D05B47/04D05B29/02D05B53/00
Inventor 加藤雅史
Owner BROTHER KOGYO KK