Sewing machine presser foot

Abstract

The utility model discloses a presser foot of a sewing machine, which comprises a presser foot bottom plate, a presser foot handle, a presser foot pressing plate and a presser foot pressing plate, a positioning mechanism is arranged between the presser foot handle and the presser foot bottom plate and comprises a positioning groove, a positioning pin and a positioning pin, and the positioning groove is formed in one end of the presser foot bottom plate; the two ends of the positioning shaft are fixed to the two sides of the inner wall of the positioning groove; the elastic assembly is arranged in the middle of the positioning shaft, the tension spring is fixed to one end of the elastic assembly and one end of the presser foot bottom plate, and a limiting mechanism and a plurality of rolling mechanisms are arranged at the two ends of the lower surface of the presser foot bottom plate respectively. Through the arrangement mode that the positioning mechanism, the limiting mechanism and the rolling mechanism are matched, the presser foot bottom plate can slide at the bottom of the presser foot handle in the elastic vertical direction conveniently, uneven cloth can slide below the presser foot bottom plate conveniently, the presser foot handle can be lifted conveniently through the tension spring, and the cloth can be rolled conveniently through the limiting mechanism and the rolling mechanism. And the sliding of the cloth is smoother.

Description

Technical Field

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

[0002] The sewing machine presser foot is an indispensable component in the feeding mechanism of the sewing machine. Various forms of sewing machine presser feet play a very important role in the production process, such as the sewing machine presser foot for sewing visible stitches, hidden zippers, pleating sewing machine presser feet, etc. It is very important to choose different sewing machine presser feet in different sewing operations.

[0003] Application No. 202122003918.X discloses a sewing machine presser foot, comprising: a presser foot body and two support pads, the two support pads are installed at the bottom of the presser foot body, and an avoidance channel for the metal buckle to pass through is formed between the two support pads. The avoidance channel for the metal buckle to pass through formed between the two presser foot bodies can enable the sewing machine presser foot to pass through the metal buckle during sewing, but only small buttons can be avoided. For large buttons, the presser foot still needs to be lifted. When sewing uneven fabrics, due to the bulge of the fabric, the fabric cannot slide smoothly under the presser foot. For some fabrics that are too thick, the presser foot presses the fabric too tightly and the fabric cannot be pulled, causing the presser foot to affect the sewing smoothness of the fabric. Utility Model Content

[0004] The utility model aims to provide a sewing machine presser foot to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a presser foot for a sewing machine, comprising: a presser foot base plate, a presser foot handle being arranged on the top of the presser foot base plate;

[0006] A positioning mechanism is provided between the presser foot handle and the presser foot bottom plate, and the positioning mechanism comprises:

[0007] A positioning groove, the positioning groove is provided at one end of the presser foot bottom plate;

[0008] A positioning shaft, both ends of which are fixed to the inner walls of the positioning groove;

[0009] An elastic component, which is arranged at the middle of the positioning shaft and is used for elastic sliding in a vertical direction between the presser foot handle and the presser foot bottom plate;

[0010] A tension spring is fixed to the elastic component and one end of the presser foot sole plate, and two ends of the lower surface of the presser foot sole plate are respectively provided with a limiting mechanism and a plurality of rolling mechanisms.

[0011] Preferably, the elastic component comprises:

[0012] A pressing plate, the pressing plate slides vertically on the bottom of the inner cavity of the presser foot handle, and the tension spring is fixed between the pressing plate and the bottom plate of the presser foot;

[0013] A fixed block, the fixed block being fixed to the lower surface of the pressing plate;

[0014] A first compression spring, wherein the first compression spring is fixed between the presser foot handle and the fixing block;

[0015] A connecting hole, wherein the connecting hole is opened in the middle of the pressing plate;

[0016] A connecting rod, wherein the connecting rod is arranged in the inner cavity of the first compression spring;

[0017] A plurality of second compression springs are fixed between the pressure plate and the pressure foot handle in a rectangular array.

[0018] Preferably, the first compression spring is slidably connected to the inner cavity of the connecting hole, and the connecting rod is slidably connected to the inner cavity of the connecting hole.

[0019] Preferably, the top end of the connecting rod is fixedly connected to the inner wall of the presser foot handle, and the connecting rod is slidably and interlacedly connected to the top of the fixed block.

[0020] Preferably, the fixing block is rotatably connected to the middle part of the positioning shaft through a bearing, and the fixing block is rotatably connected to the inner cavity of the positioning groove.

[0021] Preferably, the limiting mechanism comprises: a limiting groove and a limiting shaft, the limiting groove is arranged on the lower surface of the presser foot bottom plate, and the limiting shaft is rotatably interlaced with the inner cavity of the limiting groove.

[0022] Preferably, the rolling mechanism comprises:

[0023] A connecting groove, the connecting groove is provided on the lower surface of the presser foot bottom plate;

[0024] A plurality of ball grooves, wherein the plurality of ball grooves are equidistantly arranged on the top of the inner wall of the connecting groove;

[0025] A plurality of rolling balls are rollingly embedded in the inner cavity of the ball groove.

[0026] Technical effects and advantages of the utility model:

[0027] The utility model adopts the arrangement mode of matching the positioning mechanism, the limiting mechanism and the rolling mechanism, and utilizes the elastic component to facilitate the elastic vertical sliding of the presser foot bottom plate at the bottom of the presser foot handle, so that the uneven cloth can slide from under the presser foot bottom plate, and the presser foot handle can be lifted by the tension spring, and the sliding of the cloth is smoother by the limiting mechanism and the rolling mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0029] Figure 2 It is a schematic diagram of the overall side structure of the utility model.

[0030] Figure 3 It is a front sectional structural diagram of the presser foot bottom plate of the utility model.

[0031] In the figure: 1. presser foot base; 2. presser foot handle; 3. positioning mechanism; 31. positioning groove; 32. positioning shaft; 33. elastic component; 331. press plate; 332. fixing block; 333. first compression spring; 334. connecting hole; 335. connecting rod; 336. second compression spring; 34. tension spring; 4. limiting mechanism; 41. limiting groove; 42. limiting shaft; 5. rolling mechanism; 51. connecting groove; 52. ball groove; 53. rolling ball. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] The utility model provides Figure 1-3 A sewing machine presser foot is shown, comprising:

[0034] A presser foot sole plate 1, a presser foot handle 2 is arranged on the top of the presser foot sole plate 1, a positioning mechanism 3 is arranged between the presser foot handle 2 and the presser foot sole plate 1, the positioning mechanism 3 comprises: a positioning groove 31, a positioning shaft 32, an elastic component 33 and a tension spring 34, the positioning groove 31 is arranged at one end of the presser foot sole plate 1, and the positioning groove 31 is arranged at the top of the presser foot sole plate 1, both ends of the positioning shaft 32 are fixed to both sides of the inner wall of the positioning groove 31, the elastic component 33 is arranged in the middle of the positioning shaft 32, the elastic component 33 is used for elastic sliding in the vertical direction between the presser foot handle 2 and the presser foot sole plate 1, and the tension spring 34 is fixed to the elastic component 33 and one end of the presser foot sole plate 1;

[0035] The cam 334 is provided with a plurality of springs 336, the springs 335 being provided at the bottom of the inner cavity of the presser foot handle 2, the springs 336 being provided at the bottom of the inner cavity of the presser foot handle 2 and the springs 336 being provided at the bottom of the inner cavity of the presser foot handle 2. The first compression spring 333 is slidably connected to the inner cavity of the connecting hole 334, and the elasticity of the first compression spring 333 allows the fixing block 332 to be elastically pushed up under the presser foot handle 2, and the elasticity of the second compression spring 336 is convenient to increase the elasticity between the pressing plate 331 and the presser foot handle 2, and the connecting rod 335 is slidably connected to the inner cavity of the connecting hole 334, and the top of the connecting rod 335 is fixedly connected to the inner wall of the presser foot handle 2, and the connecting rod 335 is slidably and interlacedly connected with the top of the fixing block 332. Blocks are fixedly connected to the two sides of the pressing plate 331 and the two sides of the bottom of the connecting rod 335, and the multiple blocks are slidably and interlacedly connected to the inner wall of the presser foot handle 2 and the inner wall of the fixing block 332, respectively, to improve the sliding stability between the pressing plate 331 and the presser foot handle 2, so that the presser foot bottom plate 1 can be stabilized in the middle of the fixing block 332, so that the presser foot bottom plate 1 can slide vertically in the inner cavity of the presser foot handle 2

[0036] Furthermore, a limiting mechanism 4 and a plurality of rolling mechanisms 5 are respectively provided at both ends of the lower surface of the presser foot sole plate 1, and the limiting mechanism 4 comprises: a limiting groove 41 and a limiting shaft 42, the limiting groove 41 is provided on the lower surface of the presser foot sole plate 1, and the limiting shaft 42 is rotatably interlaced with the inner cavity of the limiting groove 41, and the position of the limiting shaft 42 is stabilized through the limiting groove 41, so that one end of the bottom of the presser foot sole plate 1 can stably slide on the fabric, and can press the fabric tightly without affecting the sliding of the fabric;

[0037] Furthermore, the multiple rolling mechanisms 5 are two rolling mechanisms 5, and the two rolling mechanisms 5 are respectively located on both sides of the lower surface of the presser foot sole plate 1, and the rolling mechanism 5 includes: a connecting groove 51, a plurality of ball grooves 52 and a plurality of rolling balls 53. The connecting groove 51 is opened on the lower surface of the presser foot sole plate 1, and the plurality of ball grooves 52 are equidistantly opened on the top of the inner wall of the connecting groove 51. The rolling balls 53 are rollingly embedded in the inner cavity of the ball groove 52. Through the rolling balls 53, the smoothness of sliding between the fabric and the presser foot sole plate 1 is improved, which facilitates smooth pulling of the fabric.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is 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 make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewing machine presser foot, comprising: A presser foot sole plate (1), wherein a presser foot handle (2) is arranged on the top of the presser foot sole plate (1); The invention is characterized in that a positioning mechanism (3) is arranged between the presser foot handle (2) and the presser foot base plate (1), and the positioning mechanism (3) comprises: A positioning groove (31), wherein the positioning groove (31) is formed at one end of the presser foot base plate (1); A positioning shaft (32), both ends of which are fixed to both sides of the inner wall of the positioning groove (31); An elastic component (33), the elastic component (33) being arranged at the middle of the positioning shaft (32), and the elastic component (33) being used for elastic sliding in a vertical direction between the presser foot handle (2) and the presser foot base plate (1); A tension spring (34) is fixed to the elastic component (33) and one end of the presser foot sole plate (1); and a limiting mechanism (4) and a plurality of rolling mechanisms (5) are respectively provided at two ends of the lower surface of the presser foot sole plate (1).

2. A sewing machine presser foot according to claim 1, characterized in that: The elastic component (33) comprises: A pressing plate (331), wherein the pressing plate (331) slides vertically on the bottom of the inner cavity of the presser foot handle (2), and the tension spring (34) is fixed between the pressing plate (331) and the presser foot bottom plate (1); A fixing block (332), wherein the fixing block (332) is fixed to the lower surface of the pressing plate (331); A first compression spring (333), wherein the first compression spring (333) is fixed between the presser foot handle (2) and the fixing block (332); A connecting hole (334), wherein the connecting hole (334) is opened in the middle of the pressing plate (331); A connecting rod (335), wherein the connecting rod (335) is arranged in the inner cavity of the first compression spring (333); A plurality of second compression springs (336) are fixed between the pressure plate (331) and the pressure foot handle (2) in a rectangular array.

3. A sewing machine presser foot according to claim 2, characterized in that: The first compression spring (333) is slidably connected to the inner cavity of the connecting hole (334), and the connecting rod (335) is slidably connected to the inner cavity of the connecting hole (334).

4. A sewing machine presser foot according to claim 2, characterized in that: The top end of the connecting rod (335) is fixedly connected to the inner wall of the presser foot handle (2), and the connecting rod (335) is slidably and interlacedly connected to the top of the fixed block (332).

5. A sewing machine presser foot according to claim 2, characterized in that: The fixing block (332) is rotatably connected to the middle part of the positioning shaft (32) via a bearing, and the fixing block (332) is rotatably connected to the inner cavity of the positioning groove (31).

6. A sewing machine presser foot according to claim 2, characterized in that: The limiting mechanism (4) comprises: a limiting groove (41) and a limiting shaft (42); the limiting groove (41) is provided on the lower surface of the presser foot base plate (1); and the limiting shaft (42) is rotatably interlaced with the inner cavity of the limiting groove (41).

7. A sewing machine presser foot according to claim 2, characterized in that: The rolling mechanism (5) comprises: A connecting groove (51), wherein the connecting groove (51) is formed on the lower surface of the presser foot base plate (1); A plurality of ball grooves (52), wherein the plurality of ball grooves (52) are equidistantly arranged on the top of the inner wall of the connecting groove (51); A plurality of rolling balls (53) are rollingly embedded in the inner cavity of the ball groove (52).

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