Frame of sewing machine

Abstract

The invention provides a frame of a sewing machine, and belongs to the technical field of sewing machine accessories. The technical problems that the frame structure of an existing sewing machine is inconvenient to move, poor in adaptability and the like are solved. The frame comprises two tubular bases, each base is vertically and fixedly provided with a stand column, an upper supporting pipe anda lower supporting pipe are movably inserted to the two ends of each base correspondingly, the lower side of each lower supporting pipe is provided with a lower rack, and the upper side of each uppersupporting pipe is provided with an upper rack; a meshing gear is arranged between each upper rack and the corresponding lower rack, and a lower transmission shaft is connected to the meshing gears;a vertical lifting support column is slidably arranged on each stand column, and an upper transmission shaft capable of driving each lifting support column to move up and down is arranged below the lifting support column; a driving shaft capable of driving the corresponding upper transmission shaft and a lower transmission shaft to rotate respectively is further arranged on each stand column; andsupporting foot assemblies are mounted at the bottoms of the outer ends of the upper supporting pipes and the lower supporting pipes. The frame is convenient to move; and the distance between the supporting foot assemblies and the height of a table plate can be adjusted, and the adaptability is strong.

Description

technical field [0001] The invention belongs to the technical field of sewing machine accessories, and relates to a sewing machine frame. Background technique [0002] Usually a complete set of sewing machine is mainly composed of sewing machine, table top, frame and other accessories. The frame of sewing machine is an indispensable part in the sewing machine as the carrier of the table top and sewing machine. The frame of the sewing machine is generally supported by the foot cups installed at each of the four corners. At the same time, for the convenience of movement, some frames are composed of two casters and two foot cups, so that the sewing machine can be easily moved only by lifting one side. But above-mentioned two kinds of schemes all have deficiencies: for example when four corners are all supported by foot cup, although the height of foot cup is adjustable, the adaptability to the ground is better, but the coefficient of friction between foot cup and ground is bigg...

AI Technical Summary

Problems solved by technology

But above-mentioned two kinds of schemes all have deficiencies: for example when four corners are all supported by foot cup, although the height of foot cup is adjustable, the adaptability to the ground is better, but the coefficient of friction between foot cup and ground is bigger , and the overall size of the sewing machine is relatively large. In addition, the overall weight of the sewing machine is generally about 80Kg. At this time, if you want to move the sewing machine, you only need to lift it up by multiple people or carry it by machine, which is time-consuming and labor-intensive. The efficiency is low; It is relatively easy to move the sewing machine supported by two foot cups, but the height of the casters cannot be adjusted, so the adaptability of the frame to the ground is very poor, and the line-surface contact between the casters and the ground, contact The small area leads to small frictional force. The above-mentioned shortcomings make it difficult to place the sewing machine with this structure stably, which affects the sewing effect.

[0006] The sewing machine frame in the above patent document is supported by four foot cups, which is inconvenient to move, and the adjustability and versatility are poor, and the height of the platen installed on the frame cannot be adjusted, which affects the convenience and comfort of use

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