Transmission mechanism of sewing machine

A transmission mechanism and sewing machine technology, which is applied to sewing machine components, sewing machine control devices, sewing equipment, etc., can solve problems such as complex structures, and achieve the effects of simplifying difficulty, improving noise, and simplifying structure

Inactive Publication Date: 2015-12-23
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the scheme of gear transmission, a gear box cover and a gear box of the bottom plate 3 must be installed on the bottom plate 3 to form a gear box body, and the structure is complicated.

Method used

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  • Transmission mechanism of sewing machine
  • Transmission mechanism of sewing machine
  • Transmission mechanism of sewing machine

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Experimental program
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Effect test

Embodiment Construction

[0020] The present invention will be further described below with specific embodiment, see figure 2 -6:

[0021] The transmission mechanism of the sewing machine includes the epicyclic shaft 10, the lower shaft 20 and the tension wheel adjustment shaft 30. The belt pulley 50, the lower shaft 20 is provided with a lower shaft synchronous pulley 60, the tensioner adjustment shaft 30 is provided with a tensioner 70, and a double-sided tooth synchronous belt is arranged outside the tensioner 70 and the large synchronous pulley 50 80, the tension pulley 60, the large synchronous pulley 50 are connected to the inner teeth of the double-sided tooth synchronous belt 80, and the lower shaft synchronous pulley 60 is connected to the outer teeth of the double-sided tooth synchronous belt 80. The epicyclic shaft 10 passes through The transmission device is connected with the upper shaft 90 and drives the action. The rotary hook 170 of sewing machine is installed on the front end of low...

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Abstract

The invention belongs to the technical field of sewing machines and particularly relates to a transmission mechanism of a sewing machine. The transmission mechanism comprises a turnover shaft, a lower shaft and a tensioning wheel adjusting shaft. A large synchronous pulley is arranged on the turnover shaft. A lower shaft synchronous pulley is arranged on the lower shaft. A tensioning wheel is arranged on the tensioning wheel adjusting shaft. A double cogged synchronous belt is arranged outside the tensioning wheel and the large synchronous pulley. The tensioning wheel and a large gear are in connection and transmission with inner side teeth of the double cogged synchronous belt. The lower shaft synchronous pulley is in connection and transmission with outer side teeth of the double cogged synchronous belt. The turnover shaft is connected with an upper shaft through a transmission device and drives the upper shaft to act. According to the transmission mechanism, the double cogged synchronous belt does not need to be soaked into lubricating oil in the operation process, the design of a gearbox body on a base plate can be omitted, the structure is simplified, and the cost is saved; the tension of the double cogged synchronous belt can be adjusted through the tensioning wheel, and matching can be achieved without replacing synchronous belts of different length tolerances, so that difficulty of the assembling process is simplified, and use is more convenient.

Description

Technical field: [0001] The invention belongs to the technical field of sewing machines, in particular to a sewing machine transmission mechanism. Background technique: [0002] Existing transmission mechanism realizes the transformation transmission of rotating speed and rotating direction through a group of gears on the tooth-lifting shaft and the lower shaft, and realizes the relationship of rotating direction reverse and rotating speed twice through a pair of gears (such as figure 1 shown). A machine using this transmission mechanism needs to select a pair of gears during assembly. The installation process is more complicated and difficult. After installing a gear 1, select a better fit by replacing another gear 2 with different tolerances. relation. At the same time, the gears 1 and 2 must be in lubricating oil during operation, so as to ensure the lubrication of the gears 1 and 2. Therefore, in the scheme of gear transmission, a gear box cover and a gear box of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B69/10
Inventor 潘建国洪志敏
Owner JACK SEWING MASCH CO LTD
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