Adjustable presser foot for sewing machine
By designing adjustable presser feet in the sewing machine, using distance adjustment mechanism and thickness adjustment mechanism, the problem that existing sewing machine pressers cannot be flexibly adjusted is solved, and the sewing needs of different thickness skins and different widths of sewing threads are achieved without replacing the presser feet, which is convenient and efficient in operation.
Patent Information
- Application Number
- CN202510045278.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2025-04-04
AI Technical Summary
The presser feet of existing sewing machines cannot be flexibly adjusted during the sewing process, which leads to frequent replacement of presser feet when sewing different thicknesses of skin or when sewing threads of different widths are required to be separated by the edge distance, which is inconvenient to operate.
An adjustable presser foot of a sewing machine is designed, using a distance adjustment mechanism and a thickness adjustment mechanism. Through components such as tooth columns, rotary columns, threaded columns and clamping pins, the distance between the presser foot baffle and the suture needle and the height of the presser plate are adjusted.
It realizes the flexibly adjusting the distance between the sewing machine needle and the presser foot and the height of the presser plate without changing the presser foot, adapting to the distance from the skin of different thicknesses and sewing threads of different widths to the edge, making it convenient and efficient in operation.
Smart Images
Figure CN119753952A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of presser feet, and in particular relates to an adjustable presser foot for a sewing machine. Background Art
[0002] In the prior art, the presser foot of a sewing machine plays a very important auxiliary role in the sewing process. The presser foot cooperates with the feed dog to fix and move the fabric on the machine. Generally, the distance between the presser foot baffle and the sewing needle is fixed. When products with different widths of the sewing line to the edge need to be sewn or when sewing surfaces of different thicknesses need to be sewn, the presser foot needs to be replaced, which is very inconvenient. Summary of the invention
[0003] In order to solve the above problems existing in the prior art, the present invention provides an adjustable presser foot for a sewing machine, which can adjust the distance between the presser foot baffle and the suture needle, and can also adjust the height to meet the needs of pressing epidermis of different thicknesses. It is easy to operate and there is no need to frequently replace the presser foot.
[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable presser foot for a sewing machine, comprising a presser foot body, a fixed cylinder fixedly connected to the lower end of the presser foot body, a distance adjustment mechanism arranged in the fixed cylinder, a thickness adjustment mechanism fixedly connected to the left side of the distance adjustment mechanism, the fixed cylinder comprising a connecting rod, a cylinder one located below the connecting rod and a cylinder two located between the connecting rod and the cylinder one, the lower end of the presser foot body being fixedly connected to the connecting rod, and the distance adjustment mechanism being arranged on the cylinder one and the cylinder two.
[0005] Furthermore, the distance adjustment mechanism includes a gear column, a rotating column, a threaded column and a pin. A through hole one matched with the gear column is provided in cylinder one, and an opening is provided on one side wall of the cylinder. The middle part of the gear column is inserted into the through hole one and the gear column moves left and right in the through hole one. A planar tooth mark is provided on the gear column, and the tooth mark is exposed at the opening. A through hole two matched with the rotating column is provided in cylinder two, and a notch is provided in the middle of cylinder two, and the notch is located above the opening. The threaded column is provided at the notch and its two sides are inserted into the through hole two of cylinder two. The threaded column is meshed with the tooth marks exposed on the outside, and one end of the rotating column passes through the through hole two and the inside of the threaded column in turn, and the rotating column rotates movably in the through hole two, and the pin is inserted into the side walls of the threaded column and the rotating column.
[0006] Furthermore, the thickness adjustment mechanism includes a fixed block, a baffle, a screw and a pressure plate. The left end of the tooth column is fixedly connected to one side of the fixed block, and the other side of the fixed block is fixedly connected to one side of the baffle. A groove one is provided at one end of the upper side of the baffle, and a groove two is provided at one end of the upper side of the pressure plate. The depth of groove one is greater than that of groove two. The other side of the baffle is in contact with the pressure plate and the screw passes through groove one and groove two in sequence to fix the baffle and the pressure plate, and the screw moves up and down in groove one.
[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is provided with a distance adjustment mechanism and a thickness adjustment mechanism, the rotating column and the threaded column are fixed together by a pin, and the other end of the rotating column is rotated clockwise by hand, the rotating column drives the threaded column to rotate clockwise, and the clockwise rotation of the threaded column drives the tooth column to move toward the fixed block, so that the distance adjustment mechanism is used to adjust the distance between the thickness adjustment mechanism and the sewing machine needle, loosen the screw, move the pressing plate up and down, and tighten the screw after adjusting the height of the pressing plate, so that the thickness adjustment mechanism is used to adjust the thickness of the sewing surface, which is easy to operate and there is no need to frequently replace the presser foot. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a schematic diagram of the structure of the present invention;
[0009] Figure 2 This is a schematic diagram of the distance adjustment mechanism structure of the present invention;
[0010] Figure 3 It is an exploded view of the distance adjustment mechanism and the fixed cylinder of the present invention;
[0011] Figure 4 It is a schematic diagram of the thickness adjustment mechanism structure of the present invention. DETAILED DESCRIPTION
[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0013] See also Figure 1-4 The present invention provides the following technical solutions: an adjustable presser foot for a sewing machine, which presses and fixes the edge of a fabric to facilitate sewing by a sewing machine, and the structure includes a presser foot body 1, a fixed cylinder 2 is fixedly connected to the lower end of the presser foot body 1, a distance adjustment mechanism is arranged in the fixed cylinder 2, a thickness adjustment mechanism is fixedly connected to the left side of the distance adjustment mechanism, the thickness adjustment mechanism is pressed at the edge of the fabric, the distance adjustment mechanism is used to adjust the distance between the thickness adjustment mechanism and the sewing machine needle, and the thickness adjustment mechanism is used to adjust the thickness of the sewing surface, so that the sewing machine does not need to be replaced. The presser foot can sew products with different widths of the distance from the sewing line to the edge and sew surfaces with different thicknesses. The fixed cylinder 2 includes a connecting rod 21, a cylinder 1 22 located below the connecting rod, and a cylinder 23 located between the connecting rod 21 and the cylinder 1 22. The lower end of the presser foot body 1 is fixedly connected to the connecting rod 21, and a distance adjusting mechanism is arranged on the cylinder 1 22 and the cylinder 2 23. The distance adjusting mechanism can move left and right on the cylinder 1 22 and the cylinder 2 23, thereby driving the thickness adjusting mechanism to move left and right, so that the distance between the thickness adjusting mechanism and the sewing machine needle can be adjusted.
[0014] Specifically, the distance adjustment mechanism includes a tooth column 3, a rotating column 4, a threaded column 5 and a bayonet 10. A through hole 221 adapted to the tooth column 3 is provided in the cylinder 1 22, an opening 222 is provided on the side wall of the cylinder 1 22, the middle of the tooth column 3 is inserted into the through hole 221 and the tooth column 3 moves left and right in the through hole 221, both ends of the tooth column 3 are exposed outside the cylinder 1 22, a planar tooth mark 31 is provided on the tooth column 3, and the tooth mark 31 is exposed at the opening 222, a through hole 231 adapted to the rotating column 4 is provided in the cylinder 23, a notch 232 is provided in the middle of the cylinder 23, and the notch 232 is located above the opening 222, the threaded column 5 is provided at the notch 232 and its two sides are plugged into the through hole 231 of the cylinder 23. In the embodiment of the present invention, the threaded column 5 is meshed with the tooth mark 31 exposed on the outside, one end of the rotating column 4 passes through the second through hole 231 and the inside of the threaded column 5 in sequence, and the rotating column 4 is movable and rotatable in the second through hole 231, and the bayonet 10 is inserted into the side walls of the threaded column 5 and the rotating column 4, and the other end of the rotating column 4 is exposed on the outside of the second cylinder 23. When adjustment is needed, it is only necessary to rotate the other end of the rotating column 4 clockwise, and the rotating column 4 drives the threaded column 5 to rotate clockwise. Since the threaded column 5 is meshed with the tooth mark 31, the threaded column 5 drives the tooth column 3 to move toward the direction of the thickness adjustment mechanism; if the other end of the rotating column 4 is rotated counterclockwise, the tooth column 3 can be moved away from the thickness adjustment mechanism, thereby achieving the effect of adjusting the distance between the thickness adjustment mechanism and the sewing machine needle.
[0015] Specifically, the thickness adjustment mechanism includes a fixed block 6, a baffle 7, a screw 8 and a pressure plate 9. The left end of the tooth column 3 is fixedly connected to one side of the fixed block 6, and the other side of the fixed block 6 is fixedly connected to one side of the baffle 7. A groove 71 is provided at one end of the upper side of the baffle 7, and a groove 2 91 is provided at one end of the upper side of the pressure plate 9. The depth of the groove 1 71 is greater than that of the groove 2 91. The other side of the baffle 7 contacts with the pressure plate 9 and the screw 8 passes through the groove 1 71 and the groove 2 91 in turn to fix the baffle 7 and the pressure plate 9. The pressure plate 9 is pressed on the edge of the fabric, and the screw 8 moves up and down in groove 1 71. Since the depth of groove 1 71 is greater than that of groove 2 91, after the pressing plate 9 is moved upward, the screw 8 can still pass through the groove 1 71 and the groove 2 91 to fix the baffle 7 and the pressing plate 9. After the pressing plate 9 moves upward, it can press the thicker fabric. When the fabric is thinner, just move the pressing plate 9 downward, and then the screw 8 passes through the groove 1 71 and the groove 2 91 to fix the baffle 7 and the pressing plate 9, thereby achieving the effect of adjusting the height of the pressing plate 9 and realizing the sewing of skins of different thicknesses.
[0016] The operating principle of the present invention is: when it is necessary to adjust the distance between the thickness adjustment mechanism and the sewing machine needle, it is only necessary to rotate the other end of the rotating column 4 clockwise, and the rotating column 4 drives the threaded column 5 to rotate clockwise. Since the threaded column 5 is engaged with the tooth mark 31, the threaded column 5 drives the tooth column 3 to move toward the fixed block 6; if the other end of the rotating column 4 is rotated counterclockwise, the tooth column 3 can be moved away from the fixed block 6; when it is necessary to adjust the height of the pressing plate 9, loosen the screw 8, move the pressing plate 9 upward or downward, and then tighten the screw 8 to fix the baffle 7 and the pressing plate 9.
[0017] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An adjustable presser foot for a sewing machine, comprising a presser foot body (1), wherein the lower end of the presser foot body (1) is fixedly connected to a fixed cylinder (2), characterized in that: A distance adjustment mechanism is arranged inside the fixed cylinder (2), and a thickness adjustment mechanism is fixedly connected to the left side of the distance adjustment mechanism. The fixed cylinder (2) comprises a connecting rod (21), a cylinder 1 (22) located below the connecting rod, and a cylinder 2 (23) located between the connecting rod (21) and the cylinder 1 (22). The lower end of the presser foot body (1) is fixedly connected to the connecting rod (21), and the distance adjustment mechanism is arranged on the cylinder 1 (22) and the cylinder 2 (23).
2. The adjustable presser foot for a sewing machine according to claim 1, characterized in that: The distance adjustment mechanism comprises a tooth column (3), a rotating column (4), a threaded column (5) and a bayonet (10); a through hole (221) matching the tooth column (3) is arranged in the first cylinder (22); an opening (222) is arranged on the side wall of the first cylinder (22); the middle part of the tooth column (3) is inserted into the through hole (221) and the tooth column (3) moves left and right in the through hole (221); a tooth mark (31) is arranged on the tooth column (3); the tooth mark (31) is exposed at the opening (222); a through hole (221) matching the rotating column (4) is arranged in the second cylinder (23); The second hole (231) is provided with a notch (232) in the middle of the second cylinder (23), and the notch (232) is located above the opening (222). The threaded column (5) is provided at the notch (232) and its two sides are inserted into the second through hole (231) of the second cylinder (23). The threaded column (5) is meshed with the tooth marks (31) exposed on the outside. One end of the rotating column (4) passes through the second through hole (231) and the threaded column (5) in turn, and the rotating column (4) is movable and rotatable in the second through hole (231). The bayonet (10) is inserted into the side walls of the threaded column (5) and the rotating column (4).
3. The adjustable presser foot for a sewing machine according to claim 2, characterized in that: The thickness adjustment mechanism comprises a fixed block (6), a baffle (7), a screw (8) and a pressure plate (9); the left end of the tooth column (3) is fixedly connected to one side of the fixed block (6); the other side of the fixed block (6) is fixedly connected to one side of the baffle (7); a groove 1 (71) is provided at one end of the upper side of the baffle (7); a groove 2 (91) is provided at one end of the upper side of the pressure plate (9); the depth of the groove 1 (71) is greater than that of the groove 2 (91); the other side of the baffle (7) contacts the pressure plate (9) and the screw (8) passes through the groove 1 (71) and the groove 2 (91) in sequence to fix the baffle (7) and the screw (8) moves up and down in the groove 1 (71).