Sewing machine presser foot

Abstract

The utility model discloses a sewing machine presser foot which comprises a presser foot body, the presser foot body is provided with a presser foot head and a presser foot tail which are connected with each other, at least one first feeding hole is vertically formed in the presser foot head, and a limiting piece is arranged on the inner wall of the first feeding hole in the axis direction; the first feeding hole is used for allowing a decorative material strip to penetrate through, and the two rolled side edges of the decorative material strip can abut against the two side walls of the limiting piece correspondingly, so that the decorative material strip cannot deflect relative to the first feeding hole. According to the embodiment of the utility model, the limiting piece is arranged on the inner wall of the first feeding hole through which the decorative material strip passes, so that the limiting piece can respectively abut against the two rolled side edges of the decorative material strip, the decorative material strip is limited, the decorative material strip is further prevented from deflecting when the sewing machine works, and the sewing position of the decorative material strip is ensured to be accurately aligned with the stitch of a sewing needle.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to a presser foot for sewing machines. Background Art

[0002] A sewing machine uses one or more sewing threads to create one or more stitches on the material being sewn, interweaving or stitching one or more layers of material. The presser foot is a crucial component in a sewing machine, pressing and positioning the material to be sewn, facilitating precise and efficient sewing.

[0003] In existing sewing machines, the head of the presser foot is equipped with a circular feed hole. When a worker inserts the end of a decorative strip through the feed hole, the two sides of the decorative strip are rolled up. The sewing machine's needle is positioned above the feed hole, and during operation, the needle sews the decorative strip onto other fabric. During operation, the presser foot frequently rises and falls at high speeds. When the presser foot is raised, it facilitates feeding the decorative strip and fabric. When the presser foot is lowered, it facilitates pressing the decorative strip down and into position, while the downward-pressing needle sews the decorative strip onto the fabric on the workbench.

[0004] However, repeated pressing of the presser foot and its collision with the workbench will generate a certain amount of vibration, causing the decorative material strip to gradually deflect, resulting in inaccurate stitching positions of the decorative strip and the sewing needle, which needs further improvement. Utility Model Content

[0005] In view of this, the utility model provides a sewing machine presser foot, which is used to solve the problem in the prior art that a decorative strip inserted on the presser foot is prone to deflection when the sewing machine is working.

[0006] To achieve one, part, or all of the above-mentioned purposes or other purposes, the present invention provides: a sewing machine presser foot, comprising: a presser foot body, the presser foot body having a presser foot head and a presser foot tail connected to each other, at least one first feed hole vertically provided on the presser foot head, and a limit plate provided on the inner wall of the first feed hole along the axial direction;

[0007] The first feeding hole is used for allowing the decorative material strip to pass through. The two side edges of the rolled decorative material strip can respectively abut against the two side walls of the limiting piece, so that the decorative material strip will not deflect relative to the first feeding hole.

[0008] Preferably, the presser foot head is provided with a spring assembly that can be extended and retracted up and down in a vertical direction, and the spring assembly protrudes from the bottom end of the presser foot head.

[0009] Preferably, a second feed hole is provided on the presser foot head, the axis of the second feed hole faces the spring assembly and is perpendicular to the axis of the first feed hole, and the second feed hole is connected to the first feed hole.

[0010] Preferably, the bottom end of the spring assembly is provided with a first groove, and the bottom end of the presser foot is provided with a second groove and a third groove;

[0011] When the presser foot is in a downward pressing state, the spring assembly is in a retracted state, so that both ends of the first groove are connected to the second groove and the third groove respectively.

[0012] Preferably, the second groove, the first groove and the third groove are connected to form a material passage trough, the material passage trough is connected to the first feed hole, and the position of the material passage trough is opposite to the second feed hole.

[0013] Preferably, the spring assembly includes a pressure block and at least one spring, a mounting hole is provided at the bottom of the presser foot head, the pressure block is adapted to be mounted in the mounting hole, and the spring is provided between the pressure block and the top wall of the mounting hole.

[0014] Preferably, a limiting column is provided on one side wall of the pressing block, a guide groove is vertically provided on one side wall of the presser foot head, and the limiting column is slidably connected in the guide groove.

[0015] Preferably, a third feed hole is provided on the presser foot tail, and the axis of the third feed hole is parallel to the axis of the second feed hole.

[0016] Preferably, a slot is provided on one side of the presser foot tail, and the slot is used to be clamped on the needle bar of the sewing machine.

[0017] Preferably, a screw hole is provided on the other side of the presser foot tail, and the screw hole is communicated with the card slot.

[0018] The implementation of the present invention will have the following beneficial effects:

[0019] After adopting the above-mentioned sewing machine presser foot, by arranging a limiting plate on the inner wall of the first feed hole for the decorative material strip to pass through, it can respectively press against the two side edges of the rolled-up decorative material strip, thereby limiting the decorative material strip, thereby preventing the decorative material strip from deflecting when the sewing machine is working, and ensuring that the decorative material strip and the sewing position of the needle are accurately aligned. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] in:

[0022] Figure 1 Schematic diagram of the three-dimensional structure of the sewing machine presser foot proposed in this utility model Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the top view of the sewing machine presser foot proposed in the utility model;

[0024] Figure 3 This is a schematic diagram of the structural decomposition of the sewing machine presser foot proposed in the utility model;

[0025] Figure 4 Schematic diagram of the three-dimensional structure of the sewing machine presser foot proposed in this utility model Figure 2 ;

[0026] Figure 5 It is a front view schematic diagram of the sewing machine presser foot provided in the present application when it is in a pressed-down state;

[0027] Figure 6 is a front view schematic diagram of the sewing machine presser foot provided in the present application when it is in a raised state;

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the sewing machine presser foot proposed by the present invention when it is provided with two first feed holes and two third feed holes.

[0029] Figure markings: 1. Presser foot body; 2. Presser foot head; 3. Presser foot tail; 4. First feed hole; 5. Limiting plate; 6. Decorative material strip; 7. Spring assembly; 8. Pressing block; 9. Limiting column; 11. Mounting hole; 12. Guide groove; 13. Second feed hole; 14. First groove; 15. Second groove; 16. Third groove; 17. Feed trough; 18. Third feed hole; 19. Card slot; 20. Screw hole. DETAILED DESCRIPTION

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this invention pertains; the terms used in the specification of the application are for the purpose of describing specific embodiments only and are not intended to limit this invention; the terms "including" and "having" and any variations thereof in the specification and claims of this invention and the accompanying drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" and the like in the specification and claims of this invention and the accompanying drawings are used to distinguish different objects, not to describe a specific order.

[0031] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0033] like Figure 1-7 The following are examples provided by the present invention.

[0034] The present invention provides a sewing machine presser foot. Figure 1 and Figure 2 As shown, it includes: a presser foot body 1, the presser foot body 1 has a presser foot head 2 and a presser foot tail 3 connected to each other, the presser foot head 2 and the presser foot tail 3 are integrally formed, the presser foot tail 3 is located at the upper part of the presser foot head 2, and at least one first feed hole 4 is vertically provided on the presser foot head 2. The first feed hole 4 is elliptical, and a limiting piece 5 is provided on the inner wall of the first feed hole 4 along the axial direction. The width of the limiting piece 5 is less than the minimum inner diameter of the first feed hole 4, so that the outer edge of the limiting piece 5 is spaced from the inner wall of the other side of the first feed hole 4, and the distance of the spacing is greater than the thickness of the decorative material strip 6, so that the decorative material strip 6 can pass through ; The first feed hole 4 is used for the decorative material strip 6 to pass through. The operator inserts the decorative material strip 6 to be sewn from the upper end of the first feed hole 4, so that the outer surface of the decorative material strip 6 is attached to the inner wall of the first feed hole 4, and the two sides of the decorative material strip 6 are rolled up to make the decorative material strip 6 into an elliptical tube shape. The two side edges of the rolled-up decorative material strip 6 can respectively abut against the two side walls of the limiting plate 5. The limiting plate 5 can limit the tubular decorative material strip 6, so that the decorative material strip 6 will not deflect relative to the first feed hole 4 during the feeding process, thereby ensuring that the sewing position of the decorative material strip 6 is accurately aligned with the stitches of the sewing needle.

[0035] Further, if Figure 1 and Figure 3As shown, the presser foot head 2 is provided with a spring assembly 7 that can be extended and retracted in the vertical direction. The spring assembly 7 protrudes from the bottom end of the presser foot head 2. The spring assembly 7 includes a pressure block 8 and at least one spring (not shown in the drawings). The bottom of the presser foot head 2 is provided with a mounting hole 11. The pressure block 8 is adapted to be mounted in the mounting hole 11. The spring is provided between the pressure block 8 and the top wall of the mounting hole 11. The pressure block 8 can slide up and down in the mounting hole 11 under the action of the spring. In addition, a limiting column 9 is provided on one side wall of the pressing block 8, and a guide groove 12 is vertically provided on one side wall of the presser foot 2. The limiting column 9 is slidably connected in the guide groove 12, and the guide groove 12 can also be a through long strip hole. Under the elastic force of the spring, the pressing block 8 presses the limiting column 9 down against the lower end of the guide groove 12. At this time, the lower end of the pressing block 8 can protrude from the bottom end of the presser foot 2 without completely falling out of the mounting hole 11. When the presser foot 2 is fully pressed down on the operating table, the pressing block 8 can also be completely retracted into the mounting hole 11. Specifically, Figure 5 As shown, when the presser foot head 2 is driven to be in the downward pressing state, the presser foot head 2 presses down on the fabric on the operating table to position the fabric, ensuring that the sewing position of the fabric and the sewing needle are accurately positioned, and at the same time drives the two sewing needles on the sewing machine to move downward together and penetrate into the first feed hole 4 to sew the two side edges of the decorative material strip 6 on the fabric; Figure 6 As shown, when the driving presser foot 2 is in the raised state, the pressing block 8 can press the cloth against the operating table under the elastic force of the spring to prevent the cloth from loosening.

[0036] Further, if Figure 1 、 Figure 3 and Figure 4 As shown, the presser foot 2 is provided with a second feed hole 13. The axis of the second feed hole 13 faces the spring assembly 7 and is perpendicular to the axis of the first feed hole 4. The second feed hole 13 is in communication with the first feed hole 4. After the two sides of the decorative material strip 6 are sewn onto the fabric, a material channel is formed between the decorative material strip 6 and the fabric. The operator can insert a cotton core into the channel through the second feed hole 13 to fill the decorative material strip 6, making it fuller and more beautiful.

[0037] Further, if Figure 1 、 Figure 3 and Figure 4As shown, the bottom end of the spring assembly 7 is provided with a first groove 14, and the bottom end of the presser foot 2 is provided with a second groove 15 and a third groove 16. When the presser foot 2 is in a downward pressing state, the spring assembly 7 is in a retracted state, so that the two ends of the first groove 14 are connected to the second groove 15 and the third groove 16 respectively. The second groove 15, the first groove 14 and the third groove 16 are connected to form an arc-shaped feed trough 17. The feed trough 17 is connected to the first feed hole 4 and is located opposite to the second feed hole 13. When the material channel between the decorative material strip 6 and the fabric is loaded with a cotton core, the bulging surface of the decorative material strip 6 becomes arc-shaped and can fit precisely in the arc-shaped feed trough 17.

[0038] Specifically, if Figure 1 As shown, a third feed hole 18 is provided on the presser foot tail 3, and the axis of the third feed hole 18 is parallel to the axis of the second feed hole 13, so that the decorative material strip 6 can be fed through the third feed hole 18 and the first feed hole 4 in sequence.

[0039] Specifically, if Figure 1 and Figure 4 As shown, a slot 19 is provided on one side of the presser foot tail 3, and the slot 19 is used to engage with the needle bar of the sewing machine to install the presser foot body 1 on the sewing machine. A screw hole 20 is provided on the other side of the presser foot tail 3, and the screw hole 20 is connected to the slot 19. After the screw passes through the screw hole 20, it is threadedly connected to the needle bar of the sewing machine, thereby fixing the presser foot body 1.

[0040] Obviously, the embodiments described above are only some of the embodiments of the present invention, rather than all of the embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present invention specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of protection of the present invention patent.

Claims

1. A sewing machine presser foot, comprising a presser foot body (1), wherein the presser foot body (1) has a presser foot head (2) and a presser foot tail (3) connected to each other, characterized in that: At least one first feeding hole (4) is vertically provided on the presser foot head (2), and a limiting piece (5) is provided on the inner wall of the first feeding hole (4) along the axial direction; The first feed hole (4) is used for allowing the decorative material strip (6) to pass through, and the two side edges of the rolled decorative material strip (6) can respectively abut against the two side walls of the limiting plate (5), so that the decorative material strip (6) will not deflect relative to the first feed hole (4).

2. The sewing machine presser foot according to claim 1, characterized in that: The presser foot head (2) is provided with a spring assembly (7) that can be extended and retracted in a vertical direction, and the spring assembly (7) protrudes from the bottom end of the presser foot head (2).

3. The sewing machine presser foot according to claim 2, characterized in that: A second feed hole (13) is provided on the presser foot head (2), the axis of the second feed hole (13) faces the spring assembly (7) and is perpendicular to the axis of the first feed hole (4), and the second feed hole (13) is connected to the first feed hole (4).

4. The sewing machine presser foot according to claim 3, characterized in that: The bottom end of the spring assembly (7) is provided with a first groove (14), and the bottom end of the presser foot (2) is provided with a second groove (15) and a third groove (16); When the presser foot (2) is in a downward pressing state, the spring assembly (7) is in a retracted state, so that the two ends of the first groove (14) are respectively connected to the second groove (15) and the third groove (16).

5. The sewing machine presser foot according to claim 4, characterized in that: The second groove (15), the first groove (14) and the third groove (16) are connected to form a feed trough (17), the feed trough (17) is connected to the first feed hole (4), and the position of the feed trough (17) is opposite to the second feed hole (13).

6. The sewing machine presser foot according to claim 4, characterized in that: The spring assembly (7) comprises a pressure block (8) and at least one spring; a mounting hole (11) is provided at the bottom of the pressure foot head (2); the pressure block (8) is adapted to be mounted in the mounting hole (11); and the spring is arranged between the pressure block (8) and the top wall of the mounting hole (11).

7. The sewing machine presser foot according to claim 6, characterized in that: A limiting column (9) is provided on one side wall of the pressing block (8), a guide groove (12) is vertically provided on one side wall of the presser foot head (2), and the limiting column (9) is slidably connected in the guide groove (12).

8. The sewing machine presser foot according to claim 3, characterized in that: A third feed hole (18) is provided on the presser foot tail (3), and the axis of the third feed hole (18) is parallel to the axis of the second feed hole (13).

9. The sewing machine presser foot according to claim 1, characterized in that: A clamping slot (19) is provided on one side of the presser foot tail (3), and the clamping slot (19) is used for clamping onto the needle bar of the sewing machine.

10. The sewing machine presser foot according to claim 9, characterized in that: A screw hole (20) is provided on the other side of the presser foot tail (3), and the screw hole (20) is communicated with the clamping slot (19).

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