Adjustable presser foot of sewing machine
By designing an adjustable presser foot for sewing machines to adjust distance and thickness, the problem of frequent presser foot replacements when sewing fabrics of different thicknesses has been solved, thus achieving greater ease of operation and adaptability.
Patent Information
- Application Number
- CN202520063670.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-01-13
AI Technical Summary
Existing sewing machine presser feet need to be changed frequently when sewing leather of different thicknesses, which is inconvenient to operate.
An adjustable presser foot for a sewing machine was designed, comprising a distance adjustment mechanism and a thickness adjustment mechanism. Through the cooperation of a toothed column, a rotating column, a threaded column, and a locking pin, the distance and height between the presser foot baffle and the sewing needle can be adjusted.
It enables the sewing of leather of different thicknesses without changing the presser foot, making it convenient and efficient to operate.
Smart Images
Figure CN223921731U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of presser feet, specifically relating to an adjustable presser foot for sewing machines. Background Technology
[0002] In the existing technology, the presser foot of a sewing machine plays a very important auxiliary role in the sewing process. The presser foot and the feed dog work together to fix and move the fabric on the machine table. Generally, the distance between the presser foot baffle and the sewing needle is fixed. When it is necessary to sew products with different widths of thread to edge distance or to sew different thicknesses of leather, the presser foot needs to be changed, which is very inconvenient. Utility Model Content
[0003] To address the aforementioned problems in the existing technology, this utility model provides an adjustable presser foot for sewing machines. It can adjust the distance between the presser foot baffle and the sewing needle, and also adjust the height to meet the needs of pressing different thicknesses of leather. It is easy to operate and does not require frequent presser foot replacements.
[0004] To achieve the above objectives, this utility model provides the following technical solution: 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 disposed inside 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 first cylinder located below the connecting rod, and a second cylinder located between the connecting rod and the first cylinder, the lower end of the presser foot body being fixedly connected to the connecting rod, and the distance adjustment mechanism being disposed on the first cylinder and the second cylinder.
[0005] Furthermore, the distance adjustment mechanism includes a toothed column, a rotating column, a threaded column, and a locking pin. A through hole 1, adapted to the toothed column, is provided inside the first cylinder. An opening is provided on one side wall of the cylinder. The middle part of the toothed column is inserted into the through hole 1, and the toothed column moves left and right within the through hole 1. A flat tooth mark is provided on the toothed column, and the tooth mark is exposed at the opening. A through hole 2, adapted to the rotating column, is provided inside the second cylinder. A notch is provided in the middle of the second cylinder, located above the opening. The threaded column is positioned at the notch, and its two sides are inserted into the through hole 2 of the second cylinder. The threaded column engages with the exposed tooth mark on the outer side. One end of the rotating column passes through the through hole 2 and the inside of the threaded column in sequence, and the rotating column moves and rotates within the through hole 2. The locking pin is inserted into the side walls of the threaded column and the rotating column.
[0006] Furthermore, the thickness adjustment mechanism includes a fixing block, a baffle, screws, and a pressure plate. The left end of the toothed column is fixedly connected to one side of the fixing block, and the other side of the fixing block is fixedly connected to one side of the baffle. A groove 1 is provided on one upper end of the baffle, and a groove 2 is provided on one upper end of the pressure plate. The depth of groove 1 is greater than that of groove 2. The other side of the baffle contacts the pressure plate, and the baffle and the pressure plate are fixed by screws passing through groove 1 and groove 2 in sequence. The screws move up and down in groove 1.
[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model is equipped with a distance adjustment mechanism and a thickness adjustment mechanism. The rotating column and the threaded column are fixed together by a locking pin. By manually rotating the other end of the rotating column clockwise, the rotating column drives the threaded column to rotate clockwise. The clockwise rotation of the threaded column drives the toothed column to move towards the fixed block, so that the distance adjustment mechanism can be used to adjust the distance between the thickness adjustment mechanism and the sewing machine needle. Loosen the screw, move the pressure plate up and down, and after adjusting the height of the pressure plate, tighten the screw to realize the thickness adjustment mechanism for adjusting the thickness of the sewn surface. It is easy to operate and does not require frequent replacement of the presser foot. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the structure of this utility model;
[0009] Figure 2 This is a schematic diagram of the distance adjustment mechanism of this utility model;
[0010] Figure 3 This is an exploded view of the distance adjustment mechanism and the fixed cylinder of this utility model;
[0011] Figure 4 This is a schematic diagram of the thickness adjustment mechanism of this utility model. Detailed Implementation
[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0013] Please see Figure 1-4This utility model provides the following technical solution: an adjustable presser foot for a sewing machine, which presses and fixes the edge of the fabric to facilitate sewing. The structure includes a presser foot body 1, with a fixed cylinder 2 fixedly connected to the lower end of the presser foot body 1. A distance adjustment mechanism is provided inside the fixed cylinder 2, and a thickness adjustment mechanism is fixedly connected to the left side of the distance adjustment mechanism. The thickness adjustment mechanism presses against 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. The thickness adjustment mechanism is used to adjust the thickness of the sewing surface, so that the sewing machine does not... Changing the presser foot allows for sewing products with varying thread widths and different thicknesses of outer fabric. The fixed cylinder 2 includes a connecting rod 21, a first cylinder 22 located below the connecting rod, and a second cylinder 23 located between the connecting rod 21 and the first cylinder 22. The lower end of the presser foot body 1 is fixedly connected to the connecting rod 21. The distance adjustment mechanism is located on the first cylinder 22 and the second cylinder 23. The distance adjustment mechanism can move left and right on the first cylinder 22 and the second cylinder 23, thereby driving the thickness adjustment mechanism to move left and right, so that the distance between the thickness adjustment mechanism and the sewing machine needle can be adjusted.
[0014] Specifically, the distance adjustment mechanism includes a gear post 3, a rotating post 4, a threaded post 5, and a locking pin 10. A through hole 221 adapted to the gear post 3 is provided inside the first cylinder 22. An opening 222 is provided on the side wall of the first cylinder 22. The middle part of the gear post 3 is inserted into the through hole 221 and moves left and right within the through hole 221. Both ends of the gear post 3 protrude outside the first cylinder 22. A flat tooth mark 31 is provided on the gear post 3, and the tooth mark 31 is exposed at the opening 222. A through hole 231 adapted to the rotating post 4 is provided inside the second cylinder 23. A notch 232 is provided in the middle of the second cylinder 23, located above the opening 222. The threaded post 5 is located at the notch 232, and its two sides are inserted into the through holes 222 of the second cylinder 23. In section 31, the threaded post 5 engages with the exposed toothed groove 31. One end of the rotating post 4 passes through the through hole 231 and the inside of the threaded post 5, and the rotating post 4 moves and rotates within the through hole 231. The locking pin 10 is inserted into the side wall of the threaded post 5 and the rotating post 4. The other end of the rotating post 4 is exposed outside the cylinder 23. When adjustment is required, simply rotate the other end of the rotating post 4 clockwise. The rotating post 4 drives the threaded post 5 to rotate clockwise. Since the threaded post 5 engages with the toothed groove 31, the threaded post 5 drives the toothed post 3 to move towards the thickness adjustment mechanism. If the other end of the rotating post 4 is rotated counterclockwise, the toothed post 3 can move away from the thickness adjustment mechanism. This achieves the effect of adjusting the distance between the thickness adjustment mechanism and the sewing machine needle.
[0015] Specifically, the thickness adjustment mechanism includes a fixing block 6, a baffle 7, a screw 8, and a pressure plate 9. The left end of the toothed post 3 is fixedly connected to one side of the fixing block 6, and the other side of the fixing block 6 is fixedly connected to one side of the baffle 7. A groove 71 is formed on one upper end of the baffle 7, and a groove 91 is formed on one upper end of the pressure plate 9. The groove 71 is deeper than the groove 91. The other side of the baffle 7 contacts the pressure plate 9, and the baffle 7 and the pressure plate 9 are fixed by the screw 8 passing through the groove 71 and the groove 91 in sequence. The pressure plate 9 presses against the edge of the fabric. Screw 8 moves up and down in groove 71. Since groove 71 is deeper than groove 91, after moving the pressure plate 9 upward, screw 8 can still pass through groove 71 and groove 91 to fix the baffle 7 to the pressure plate 9. After the pressure plate 9 moves upward, it can press down on thicker fabric. When the fabric is thinner, simply move the pressure plate 9 downward, and then screw 8 passes through groove 71 and groove 91 to fix the baffle 7 to the pressure plate 9, thereby achieving the effect of adjusting the height of the pressure plate 9 and realizing the sewing of skins of different thicknesses.
[0016] The working principle of this utility model is as follows: When it is necessary to adjust the distance between the thickness adjustment mechanism and the sewing machine needle, simply rotate the other end of the rotating column 4 clockwise. The rotating column 4 drives the threaded column 5 to rotate clockwise. Since the threaded column 5 meshes with the toothed groove 31, the threaded column 5 drives the toothed column 3 to move towards the fixed block 6. If the other end of the rotating column 4 is rotated counterclockwise, the toothed column 3 can be moved away from the fixed block 6. When it is necessary to adjust the height of the pressure plate 9, loosen the screw 8, move the pressure plate 9 up or down, and then tighten the screw 8 to fix the baffle 7 and the pressure plate 9.
[0017] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An adjustable presser foot for a sewing machine, comprising a presser foot body (1), wherein a fixed cylinder (2) is fixedly connected to the lower end of the presser foot body (1), characterized in that, The fixed cylinder (2) is provided with a distance adjustment mechanism. The left side of the distance adjustment mechanism is fixedly connected to a thickness adjustment mechanism. The fixed cylinder (2) includes a connecting rod (21), a cylinder one (22) located below the connecting rod, and a cylinder two (23) located between the connecting rod (21) and the cylinder one (22). The lower end of the presser foot body (1) is fixedly connected to the connecting rod (21). The distance adjustment mechanism is set on the cylinder one (22) and the cylinder two (23).
2. The adjustable presser foot for a sewing machine according to claim 1, characterized in that, The distance adjustment mechanism includes a toothed column (3), a rotating column (4), a threaded column (5), and a locking pin (10). The first cylinder (22) has a through hole (221) adapted to the toothed column (3). An opening (222) is provided on the side wall of the first cylinder (22). The middle part of the toothed column (3) is inserted into the through hole (221), and the toothed column (3) moves left and right within the through hole (221). A flat tooth mark (31) is provided on the toothed column (3), and the tooth mark (31) is exposed at the opening (222). The second cylinder (23) has a through hole adapted to the rotating column (4). Hole 2 (231), the cylinder 2 (23) has a notch (232) in the middle, the notch (232) is located above the opening (222), the threaded column (5) is set at the notch (232) and its two sides are inserted into the through hole 2 (231) of the cylinder 2 (23), the threaded column (5) meshes with the tooth marks (31) exposed on the outside, one end of the rotating column (4) passes through the through hole 2 (231) and the inside of the threaded column (5) in sequence, and the rotating column (4) moves and rotates in the through hole 2 (231), the locking pin (10) is inserted into the side wall 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 includes a fixing block (6), a baffle (7), a screw (8), and a pressure plate (9). The left end of the toothed column (3) is fixedly connected to one side of the fixing block (6), and the other side of the fixing block (6) is fixedly connected to one side of the baffle (7). A groove 1 (71) is provided on one end of the upper side of the baffle (7), and a groove 2 (91) is provided on one end of the upper side of the pressure plate (9). The depth of groove 1 (71) is greater than that of groove 2 (91). The other side of the baffle (7) contacts the pressure plate (9), and the baffle (7) and the pressure plate (9) are fixed by the screw (8) passing through groove 1 (71) and groove 2 (91) in sequence. The screw (8) moves up and down in groove 1 (71).