Novel hand wheel of sewing machine

Abstract

The invention relates to a novel hand wheel of a sewing machine. A direct drive motor is arranged at the right end of a machine head of the sewing machine, the hand wheel mainly comprises a hand wheel body, wherein the hand wheel body is connected with a tail shaft of the motor, fan blades are connected between a wheel flange and a central shaft of the hand wheel body, a hand wheel cover is arranged at the outer end of the hand wheel body and is of a groove strip mesh shaped or multi-point hole mesh shaped structure, and the hand wheel is characterized in that the hand wheel cover is detachably connected with the hand wheel body. Compared with a fixed hand wheel cover, the hand wheel cover of the hand wheel can be disassembled and independently cleaned, is suitable for more cleaning modes, and has the advantages of easiness for washing and cleaning and no influence on the blades even the motor during cleaning; and the wheel flange of the hand wheel extends outwards and is convenient to be grabbed to rotate during use of the hand wheel.

Description

technical field [0001] The invention relates to a sewing machine handwheel, in particular to a handwheel with a fan and a protective cover. Background technique [0002] In the direct-drive industrial sewing machine, the heat dissipation of the motor is very important. Adding a small fan at its outer end can enhance the air circulation. At present, people usually integrate the fan and the hand wheel on the outside of the motor to facilitate processing and installation and make the structure more compact. In order to ensure that the fingers will not be hurt by touching the fan blades when using the handwheel, a handwheel cover or protective cover is generally installed on the outer end of the fan blades. But whether it is the handwheel cover or the protective cover, the air with the heat of the motor is enclosed in the machine head, which weakens the cooling and cooling effect of the fan. [0003] Chinese patent CN200920078249.9 discloses a "direct-drive industrial sewing m...

AI Technical Summary

Problems solved by technology

However, because the thread and wool fabric are usually fine and small, the mesh on the hand wheel cover generally needs to be designed smaller to play a good shielding effect. In addition, the thread and fabric have the characteristics of easy adhesion, so it is easy to absorb on the hand. The mesh on the outside of the wheel cover must be cleaned after a long time to prevent the air outlet channel from being blocked

However, the surface of the hand wheel cover itself is a mesh structure, and the adhesive is fixed on the outside of the axial flow fan, which is easy to cause cleaning difficulties or uncleanness

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