Presser foot structure and sewing machine

Abstract

The utility model relates to sewing machine related technical field, especially, a kind of presser foot structure and sewing machine are more particularly related to a kind of presser foot structure and sewing machine.The presser foot structure includes main body presser foot and sub-presser foot, main body presser foot includes first presser foot part and second presser foot part, and first presser foot part and second presser foot part are arranged in parallel;Sub-presser foot is detachably installed on main body presser foot, and sub-presser foot includes hold part, hold part is arranged between first presser foot part and second presser foot part position, and hold part can be with first presser foot part and second presser foot part common pressure fabric.This application by using the detachable split type structure of sub-presser foot and main body presser foot, so that sewing machine when switching sewing process, only need to replace sub-presser foot, without disassembling main body presser foot and its associated components, so not only improve the convenience and operating efficiency of disassembly, but also will not need to replace complete presser foot structure and reduce use cost.

Description

Technical Field

[0001] This application relates to the technical field of sewing machines, and in particular to a presser foot structure and a sewing machine. Background Technology

[0002] The four-needle six-thread sewing machine is a type of sewing machine that is widely used in the sewing of knitted garments, sportswear, and home textiles.

[0003] Currently, existing four-needle six-thread sewing machines typically require various types of presser feet to meet the needs of processes such as extremely thick materials, single-cut fabric with fleece, and start-up stitching. Because the presser foot is connected to multiple internal components of the four-needle six-thread sewing machine, the disassembly process of the presser foot is cumbersome, and after reassembly, it is necessary to ensure the precise relative positions of each component, making the entire disassembly and assembly operation complex and difficult. Utility Model Content

[0004] In view of this, it is necessary to provide a presser foot structure and a sewing machine that can solve the above-mentioned technical problems.

[0005] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0006] A presser foot structure, used in a sewing machine, includes:

[0007] The main body presser foot includes a first presser foot part and a second presser foot part, wherein the first presser foot part and the second presser foot part are arranged parallel to each other;

[0008] The separate presser foot is detachably mounted on the main presser foot. The separate presser foot includes a holding part, which is located between the first presser foot and the second presser foot, and the holding part can press the fabric together with the first presser foot and the second presser foot.

[0009] Understandably, by adopting a detachable and separate structure for the presser foot and the main presser foot, when switching sewing processes, only the presser foot needs to be replaced, without disassembling the main presser foot and its related components. This not only improves the convenience of disassembly and assembly and operational efficiency, but also reduces operating costs because the entire presser foot structure does not need to be replaced.

[0010] In one embodiment, the main body pressure foot further includes a first mounting base, and the first mounting base, the first pressure foot portion, and the second pressure foot portion are connected as an integral structure;

[0011] The pressure foot is detachably connected to the second pressure foot.

[0012] In one embodiment, the pressure foot is configured with a mounting portion;

[0013] The presser foot structure also includes a first connector, which is screwed to the second presser foot after passing through the mounting part, for pressing and limiting the sub-presser foot onto the second presser foot.

[0014] In one embodiment, the number of the first connectors is configured to be two.

[0015] In one embodiment, the main body presser foot further includes a second mounting base, the second mounting base being integrally connected to the first presser foot portion, and the second presser foot portion being detachably connected to the second mounting base;

[0016] The pressure foot and the second pressure foot are connected as a single unit.

[0017] In one embodiment, the second presser foot is provided with an extended boss that abuts against the second mounting base and is detachably connected to the second mounting base.

[0018] In one embodiment, the presser foot structure further includes a second connector that is screwed to the extended boss after passing through the second mounting base, for limiting the second presser foot portion to the second mounting base.

[0019] In one embodiment, one of the extension boss and the second mounting base is provided with a protruding positioning protrusion, and the other is provided with a positioning groove. The positioning protrusion can be inserted and engaged with the positioning groove, thereby assembling and positioning the extension boss onto the second mounting base.

[0020] It is understandable that the extended boss is assembled and positioned on the second mounting base by interlocking the positioning protrusion with the positioning groove.

[0021] In one embodiment, the pressure plate is configured as a first pressure plate, a second pressure plate, or a third pressure plate;

[0022] When the pressure foot is configured as the first pressure foot, the first pressure foot is used to press against the first fabric;

[0023] When the pressure foot is configured as the second pressure foot, the second pressure foot is used to press against the second fabric;

[0024] When the pressure foot is configured as the third pressure foot, the third pressure foot is used to press against the third fabric.

[0025] This application also claims protection for a sewing machine including the presser foot structure described above.

[0026] Due to the application of the above solution, this application has the following advantages compared with the prior art:

[0027] The presser foot structure and sewing machine claimed in this application adopt a detachable and separate structure of the sub-presser foot and the main presser foot, so that when the sewing machine switches sewing processes, only the sub-presser foot needs to be replaced, without disassembling the main presser foot and its related parts. This not only improves the convenience of disassembly and assembly and the efficiency of operation, but also reduces the cost of use because the entire presser foot structure does not need to be replaced. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram illustrating the application of the presser foot structure provided in the first embodiment of this application to a sewing machine.

[0030] Figure 2 This is a schematic diagram of the presser foot structure provided in the first embodiment of this application.

[0031] Figure 3 This is an exploded view of the presser foot structure provided in the first embodiment of this application.

[0032] Figure 4 This is a schematic diagram of the structure of the first pressure foot provided in the first embodiment of this application.

[0033] Figure 5 This is a structural schematic diagram of the first pressure foot provided in the first embodiment of this application from another perspective.

[0034] Figure 6 This is a schematic diagram of the structure of the second pressure foot provided in the first embodiment of this application.

[0035] Figure 7 This is a schematic diagram of the structure of the third pressure foot provided in the first embodiment of this application.

[0036] Figure 8 This is a structural schematic diagram of the third pressure foot provided in the first embodiment of this application from another perspective.

[0037] Figure 9 This is an exploded view of the presser foot structure provided in the second embodiment of this application.

[0038] Figure 10 This is an exploded view of the presser foot structure provided in the second embodiment of this application from another perspective.

[0039] Reference numerals: 100, presser foot structure; 10, main presser foot; 11, first presser foot part; 12, second presser foot part; 121, extension boss; 1211, positioning boss; 13, first mounting base; 14, second mounting base; 141, positioning groove; 20, sub-presser foot; 21, first sub-presser foot; 22, second sub-presser foot; 23, third sub-presser foot; 24, pressing part; 25, mounting part; 30, first connecting piece; 40, second connecting piece. Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0041] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0045] The presser foot structure 100 claimed in this application is used in a sewing machine to hold the fabric during sewing. Specifically, the sewing machine is a four-needle six-thread sewing machine, or other types of sewing machines.

[0046] like Figures 1 to 10 As shown, the presser foot structure 100 provided in this application includes a main presser foot 10 and a secondary presser foot 20. The main presser foot 10 includes a first presser foot portion 11 and a second presser foot portion 12, which are arranged in parallel. The secondary presser foot 20 is detachably installed on the main presser foot 10. The secondary presser foot 20 includes a holding portion 24, which is disposed between the first presser foot portion 11 and the second presser foot portion 12, and the holding portion 24 can press the fabric together with the first presser foot portion 11 and the second presser foot portion 12.

[0047] As can be seen from the above, by adopting a detachable and separate structure of the presser foot 20 and the main presser foot 10, this application allows the sewing machine to switch sewing processes by simply replacing the presser foot 20, without disassembling the main presser foot 10 and its related components. This not only improves the convenience of disassembly and assembly and the efficiency of operation, but also reduces the cost of use because the entire presser foot structure 100 does not need to be replaced.

[0048] Example 1:

[0049] like Figures 1 to 3 As shown, the main pressure foot 10 includes a first mounting base 13, and the first mounting base 13, the first pressure foot part 11 and the second pressure foot part 12 are connected as an integral structure; the sub-pressure foot 20 is detachably connected to the second pressure foot part 12.

[0050] Specifically, the presser foot 20 has a mounting portion 25; the presser foot structure 100 also includes a first connector 30, which passes through the mounting portion 25 and is screwed onto the second presser foot portion 12 to press and limit the presser foot 20 onto the second presser foot portion 12. In other words, in this embodiment, the mounting portion 25 and the second presser foot portion 12 are connected via the first connector 30. When the sewing machine needs to switch sewing processes, the operator only needs to remove the first connector 30 and replace the corresponding presser foot 20, without disassembling other components. Here, the first connector 30 can be a bolt or a screw.

[0051] like Figures 1 to 3As shown, in one embodiment, the number of first connectors 30 is configured as two. The two first connectors 30 are arranged at intervals along the direction parallel to the second pressure foot 12 and the pressure foot 20. The two first connectors 30 cooperate with each other and jointly limit the rotation of the pressure foot 20, so that the pressure foot 20 has two limiting points when fixed on the second pressure foot 12. This can improve the connection stability of the pressure foot 20 when it is pressed and fixed to the second pressure foot 12. It can be understood that in other embodiments, the number of first connectors 30 may be three or more, which will not be elaborated here.

[0052] like Figure 4 , Figure 5 As shown, in one embodiment, the pressure foot 20 is configured as a first pressure foot 21 for pressing against a first fabric (not shown). Here, the first fabric is an extremely thick material with a thickness of 6 mm to 10 mm, and the pressing portion 24 of the first pressure foot 21 is constructed to have a relatively thin thickness and a transition angle of about 45°, so that it can be used in extremely thick material scenarios to facilitate the smooth passage of extremely thick materials.

[0053] like Figure 6 As shown, in one embodiment, the pressure foot 20 is configured as a second pressure foot 22 for pressing against a second fabric (not shown). Here, the second fabric is a fleece AB fabric, and the pressing portion 24 of the second pressure foot 22 is configured to effectively avoid damaging the fleece surface while pressing the fleece AB fabric, making it suitable for fleece single-cut applications.

[0054] like Figure 7 , Figure 8 As shown, in one embodiment, the presser foot 20 is configured as a third presser foot 23 for pressing down on a third fabric (not shown). Here, the third fabric is a thick material, and the holding portion 24 of the third presser foot 23 is constructed with a shaping thickness of 3mm to 5mm and a smooth transition profile of about 15°, so that the third presser foot 23 can apply sufficient and uniform holding force to the thick material when starting to sew, effectively preventing the fabric from being rolled under the needle plate or wrinkled in the initial stage, thus making it suitable for starting and rushing scenarios.

[0055] It should be noted that the presser foot 20 is not limited to the configuration of the first presser foot 21, the second presser foot 22, or the third presser foot 23 mentioned above. For those skilled in the art, by equipping presser feet 20 with various shapes of pressing parts 24, the process scene can be switched by changing the corresponding presser foot 20 when the sewing machine needs to switch sewing processes.

[0056] Example 2:

[0057] like Figure 9 , Figure 10As shown, the main pressure foot 10 includes a second mounting base 14, which is connected to the first pressure foot portion 11 as an integral structure, and the second pressure foot portion 12 is detachably connected to the second mounting base 14; the sub-pressure foot 20 is connected to the second pressure foot portion 12 as an integral structure.

[0058] Specifically, the second presser foot 12 is provided with an extended boss 121, which abuts against the second mounting base 14 and is detachably connected to the second mounting base 14.

[0059] like Figure 9 , Figure 10 As shown, in one embodiment, the presser foot structure 100 further includes a second connector 40. The second connector 40 passes through the second mounting base 14 and is screwed to the extension boss 121, thereby limiting the second presser foot portion 12 to the second mounting base 14. That is, in this embodiment, the extension boss 121 and the second mounting base 14 are connected via the second connector 40. When the sewing machine needs to switch sewing processes, the operator only needs to remove the second connector 40 and replace the corresponding second presser foot portion 12, without disassembling other components. Here, the second connector 40 can be a bolt or a screw.

[0060] It should be noted that the pressing part 24 of the presser foot 20 in Embodiment 2 can adopt any shape of the pressing part 24 of the presser foot 20 in Embodiment 1, in order to adapt to different process scenarios of the sewing machine.

[0061] like Figure 9 , Figure 10 As shown, in one embodiment, one of the extension boss 121 and the second mounting base 14 is provided with a protruding positioning protrusion 1211, and the other is provided with a positioning groove 141. The positioning protrusion 1211 can be inserted and engaged with the positioning groove 141, thereby assembling and positioning the extension boss 121 onto the second mounting base 14. That is, in this embodiment, the assembly and positioning of the extension boss 121 on the second mounting base 14 is achieved through the insertion and engagement of the positioning protrusion 1211 and the positioning groove 141.

[0062] Here, the positioning protrusion 1211 is provided on the extension protrusion 121, and correspondingly, the positioning groove 141 is provided on the second mounting base 14. Alternatively, the positioning protrusion can be provided on the second mounting base 14, and the positioning groove can be provided on the extension protrusion 121, which will not be elaborated here.

[0063] This application also provides a sewing machine including the presser foot structure 100 described above.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A presser foot structure, used in a sewing machine, characterized in that, The presser foot structure (100) includes: The main presser foot (10) includes a first presser foot part (11) and a second presser foot part (12), wherein the first presser foot part (11) and the second presser foot part (12) are arranged in parallel. The sub-presser foot (20) is detachably mounted on the main presser foot (10). The sub-presser foot (20) includes a pressing part (24), which is located between the first presser foot part (11) and the second presser foot part (12). The pressing part (24) can press the fabric together with the first presser foot part (11) and the second presser foot part (12).

2. The presser foot structure according to claim 1, characterized in that, The main body pressure foot (10) also includes a first mounting base (13), and the first mounting base (13), the first pressure foot part (11) and the second pressure foot part (12) are connected as an integral structure; The pressure foot (20) is detachably connected to the second pressure foot (12).

3. The presser foot structure according to claim 2, characterized in that, The pressure foot (20) has a mounting part (25). The presser foot structure (100) further includes a first connector (30), which is screwed to the second presser foot portion (12) after passing through the mounting portion (25) to press and limit the sub-presser foot (20) onto the second presser foot portion (12).

4. The presser foot structure according to claim 3, characterized in that, The number of the first connectors (30) is configured to be two.

5. The presser foot structure according to claim 1, characterized in that, The main body presser foot (10) also includes a second mounting base (14), the second mounting base (14) and the first presser foot part (11) are connected as an integral structure, and the second presser foot part (12) is detachably connected to the second mounting base (14). The pressure foot (20) and the second pressure foot (12) are connected as an integral structure.

6. The presser foot structure according to claim 5, characterized in that, The second presser foot (12) is provided with an extension boss (121), which abuts against the second mounting base (14) and is detachably connected to the second mounting base (14).

7. The presser foot structure according to claim 6, characterized in that, The presser foot structure (100) further includes a second connector (40), which is screwed to the extension boss (121) after passing through the second mounting base (14) to limit the second presser foot portion (12) to the second mounting base (14).

8. The presser foot structure according to claim 6, characterized in that, One of the extended boss (121) and the second mounting base (14) is provided with a protruding positioning protrusion (1211), and the other is provided with a positioning groove (141). The positioning protrusion (1211) can be inserted and engaged with the positioning groove (141) to assemble and position the extended boss (121) onto the second mounting base (14).

9. The presser foot structure according to claim 1, characterized in that, The pressure foot (20) is configured as a first pressure foot (21), a second pressure foot (22), or a third pressure foot (23); When the pressure foot (20) is configured as the first pressure foot (21), the first pressure foot (21) is used to press against the first fabric; When the pressure foot (20) is configured as the second pressure foot (22), the second pressure foot (22) is used to press against the second fabric; When the pressure foot (20) is configured as the third pressure foot (23), the third pressure foot (23) is used to press against the third fabric.

10. A sewing machine, characterized in that, Includes the presser foot structure (100) according to any one of claims 1 to 9.

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