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a sewing machine

A sewing machine and presser foot lifting technology, applied in sewing machine components, sewing machine control devices, sewing equipment, etc., can solve problems such as inconvenience for customers to use, and achieve the effect of improving performance and changing transmission efficiency.

Active Publication Date: 2022-06-21
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the actual use of the sewing machine by the customer, it is not necessary to lift the presser foot to the full stroke when lifting the presser foot or changing the direction in the middle, but only needs to lift the presser foot slightly upwards, which causes inconvenience to the customer.

Method used

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Experimental program
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Embodiment Construction

[0068] The embodiments of the present invention are described below by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0069] It should be noted that the structures, proportions, sizes, etc. drawn in the accompanying drawings in this specification are only used to cooperate with the contents disclosed in the specification for the understanding and reading of those who are familiar with the technology, and are not intended to limit the conditions for the implementation of the present invention. Therefore, without technical substantive significance, any modification of structure, change of proportional relationship or adjustment of size should still fall within the scope disclosed in the present invention without affecting the effect that the present invention can produce and the purpose that can be achieved. within the scope of technical content. A...

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Abstract

The invention provides a sewing machine, comprising a main shaft, a tooth frame, a feeding dog, a tooth lifting mechanism connected between the main shaft and the tooth frame, a presser foot, a presser foot lifting transmission assembly connected with the presser foot, a driving source, and Rotating drive crank, tooth adjusting clutch transmission assembly connected between the drive crank and a tooth lifting transmission part in the tooth lifting mechanism, and a presser foot lifting transmission part connected between the driving crank and the presser foot lifting transmission assembly The presser foot lifter clutch transmission assembly, the working range of the drive source includes the working area of ​​the tooth adjustment and the working area of ​​the presser foot lifter. When the driving source is running in the working area of ​​tooth adjustment, it can change the position angle of the tooth lifting transmission parts, thereby changing the transmission efficiency of the tooth lifting mechanism and realizing the adjustment of the height of the tooth lifting; when the driving source is running in the working area of ​​the presser foot, The feed dog never protrudes from the needle plate, which is convenient for taking and placing the sewing material, and can make the corresponding presser foot lifting transmission parts be located at different positions and angles, and the presser foot can be lifted up to different heights.

Description

technical field [0001] The present invention relates to a sewing machine. Background technique [0002] Existing sewing machines (such as lockstitch machines) generally include a main shaft driven and rotated by a main motor, a tooth lift shaft and a feed shaft parallel to the main shaft, a needle bar extending up and down, a machine needle installed at the lower end of the needle bar, a tooth frame, and the feeding dog fixed on the tooth frame, wherein the main shaft is connected with the tooth-lifting shaft through the first tooth-lifting transmission assembly, the tooth-lifting shaft is connected with one end of the tooth frame through the second tooth-lifting transmission assembly, and the main shaft is connected by the first feeding transmission assembly It is connected with the feeding shaft, the feeding shaft is connected with the other end of the tooth frame through the second feeding transmission component, and the main shaft is also connected with the needle bar th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B27/24D05B29/02D05B69/12
CPCD05B27/24D05B29/02D05B69/12
Inventor 柯祥林祝书伟郑吉赵秋红
Owner JACK SEWING MASCH CO LTD
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