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Sewing machine

A sewing machine and presser foot lifting technology, which is applied in the direction of sewing machine components, sewing equipment, cloth feeding mechanism, etc., can solve the problems of customers' inconvenient use and achieve the effect of improving performance

Active Publication Date: 2021-06-22
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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Examples

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Embodiment Construction

[0075] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0076] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, there is no technical substantive meaning, and any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of the disclosure of the present invention without affecting the functions and objectives of the present invention. within the scope of technical content. At the same time, terms such as "upper", "lo...

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Abstract

The invention provides a sewing machine. The sewing machine comprises a main shaft, a tooth frame, a feeding tooth, a tooth lifting mechanism, a presser foot, a presser foot lifting transmission assembly, a driving source, a rotating shaft driven by the driving source to rotate, a tooth adjusting crank fixed to the rotating shaft, a presser foot lifting crank sleeving the rotating shaft, a tooth adjusting connecting rod, a presser foot lifting connecting rod and a clutch assembly connected between the tooth adjusting crank and the presser foot lifting crank. The two ends of the tooth adjusting connecting rod are correspondingly connected with the tooth adjusting crank and a tooth lifting transmission part in the tooth lifting mechanism, and the two ends of the presser foot lifting connecting rod are correspondingly connected with the presser foot lifting crank and the presser foot lifting transmission part in the presser foot lifting transmission assembly. The rotating angle of the rotating shaft has a tooth lifting height adjusting rotating angle range and a presser foot lifting rotating angle range; when the rotating angle of the rotating shaft is located in the tooth lifting height adjusting rotating angle range, different rotating angles of the rotating shaft correspond to different tooth lifting heights; and when the rotating angle of the rotating shaft is located in the rotating angle range of the presser foot lifting, the feeding tooth do not protrude out of a needle plate all the time, and different rotating angles of the rotating shaft correspond to different presser foot lifting heights.

Description

technical field [0001] The present invention relates to a sewing machine. Background technique [0002] Existing sewing machines (such as lockstitch sewing machines) generally include a main shaft driven by a main motor, a tooth lifting shaft and a feeding 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 feed tooth 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 through 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 assembly, and the main shaft is also connected with the needle b...

Claims

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Application Information

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