Bobbin case of sewing machine

Abstract

The invention relates to a bobbin case of a sewing machine, comprising a body and a thread clamping elastic sheet connected with the body, wherein the body comprises a bottom wall, a peripheral wall and a central shaft, wherein the peripheral wall extends upwards from the peripheral edge of the bottom wall, and the central shaft is arranged at the center of the bottom wall along the axial direction; a notch is arranged in the peripheral wall; the notch penetrates through the bottom wall downwards from the top edge of the peripheral wall; a thread guiding slot is arranged in the peripheral wall; the thread guiding slot penetrates through the peripheral wall downwards from the top edge of the peripheral wall; a thread guiding member is arranged on the bottom wall and is located under the notch; the thread clamping elastic sheet is arranged outside the peripheral wall, and a gap is formed between the thread clamping elastic sheet and the peripheral wall; the bottom end of the thread guiding slot is located in the peripheral wall region covered by the thread clamping elastic sheet; the end part of the thread clamping elastic sheet is a thread guiding hook; a thread guiding hole is arranged in the peripheral wall corresponding to the thread guiding hook; and a thread guiding groove is arranged in the peripheral wall; the thread guiding groove is located between the thread guiding hole and the thread guiding member; and the thread guiding groove is communicated with the notch. The bobbin case is suitable for the sewing machine and capable of stabilizing the sewing tension, thereby improving the sewing effect of the sewing machine.

Description

Sewing machine bobbin case technical field The invention relates to a bobbin case, in particular to a sewing machine bobbin case. Background technique As shown in FIG. 4 , the structure of the currently used sewing machine bobbin case is: including a body 1 and a thread clamp elastic piece 2 connected to the body 1 , the body 1 includes a bottom wall 11 extending upward from the periphery of the bottom wall 11 The peripheral wall 12 and the central axis 13 arranged in the center of the bottom wall 11 and arranged in the axial direction, the peripheral wall 12 is provided with a gap 14, the gap 14 penetrates downward from the top edge of the peripheral wall 12 to the bottom wall 11, and the peripheral wall 12 is provided with wires Groove 15, the wire groove 15 runs through the peripheral wall 12 downward from the top edge of the peripheral wall 12, the bottom wall 11 is provided with a wire guide 3, and the wire guide 3 is located directly below the notch 14; And there is...

AI Technical Summary

Problems solved by technology

The disadvantage of the above-mentioned sewing machine bobbin case is: as shown in Figure 6, since the outer peripheral surface of the peripheral wall 12 is smooth, the suture 5 often slides from the peripheral wall 12 to the bottom wall 11, causing the tension of the suture 5 to be unstable. In this case, the thread flow to the sewing thread 5 will be changed, which will affect the sewing effect of the sewing machine

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