Bottom line tension adjusting knob of sewing machine
A tension adjustment, sewing machine technology, applied in the direction of sewing machine components, sewing machine ring mechanism, sewing equipment, etc., can solve problems such as inconvenience
Inactive Publication Date: 2012-06-20
吴江丰榖布艺整理厂
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The upper thread can be adjusted using the thread tension knob located on the machine body, while the adjustment of the lower thread tension usually requires a screwdriver to turn the tension adjustment screw on the surface of the bobbin case, which is very inconvenient.
Method used
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Embodiment Construction
[0019] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so it only shows the composition related to the present invention.
[0020] Such as figure 1 , figure 2 , image 3 As shown, the bottom thread tension adjustment button is located on the surface of the bobbin case (1), and mainly includes a screw (2) for adjusting the tension of the bottom thread, and a pull ring (4) whose shaft is connected to the top of the screw (3). The shaft (5) is parallel to the top surface of the screw (6), and the pull ring (4) can rotate perpendicularly to the top surface of the screw (6). The connecting shaft (5) is along the diameter direction of the circular plane at the top of the screw. Turn the connecting shaft (5), draw the pull ring (4) close to the surface of the bobbin ...
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The invention relates to a bottom line tension adjusting knob of a sewing machine. A rotating shuttle for holding a bottom line is arranged below a needle plate of the sewing machine, and the adjusting knob mainly comprises a tension adjusting screw arranged on the surface of a shell of the rotating shuttle. The bottom line tension adjusting knob of the sewing machine is characterized in that the top of the tension adjusting screw is provided with a pull ring. When the bottom line tension adjusting knob is used, the pull ring can be conveniently and directly grasped to rotate the screw to adjust the tension of the bottom line, and the trouble of using a screwdriver is omitted. The pull ring is connected to the top of the screw through a shaft, and when a connecting shaft is arranged along a diameter direction of a round plane on the top of the screw so as to be convenient to fold and put away and rotate more easily. The pull ring can be folded and fixed on the surface of the shell of the shuttle or a groove part on the top of the screw to prevent freely rotating around the connecting shaft to influence the rotation of the rotating shuttle or hook other sewing machine parts outside the shell of the shuttle.
Description
technical field [0001] The invention relates to sewing machine parts, in particular to a knob on a rotary hook for adjusting the tension of the bottom thread. Background technique [0002] Commonly used lockstitch sewing machines, the machine head is connected with a vertically downward machine needle through a needle bar, the upper thread is threaded in the needle hole, a needle plate is embedded on the table below the needle plate, a rotary shuttle is placed under the needle plate, and the bottom thread Wrapped around the bobbin in the bobbin case and passed through the hook. When sewing, the fabric is placed on the needle plate, the needle moves up and down to pierce the fabric, the hook rotates, hooks the upper thread, and combines it with the bottom thread to form a lock stitch. [0003] When working, it is necessary to adjust the tension of the upper and lower threads to ensure smooth and beautiful seams. The upper thread can be adjusted using the thread tension knob...
Claims
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IPC IPC(8): D05B63/00D05B57/26
Inventor 陆名
Owner 吴江丰榖布艺整理厂