Flat seaming machine presser foot and flat seaming machine
By introducing a combination design of guide grooves, auxiliary presser foot plates, elastic parts and limit parts into the presser foot of the interlock sewing machine, the problem of fabric feeding problems in the bone starting process is solved, and the effects of smooth feeding and beautiful stitches are achieved.
Patent Information
- Application Number
- CN202422703680.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-11-05
AI Technical Summary
In the presser foot of existing sewing machines, the feed teeth have little contact with the fabric during the "bone-pressing and starting" process, resulting in the fabric being unable to be fed, getting stuck, and even the risk of the needle being blocked and broken.
By introducing a combined design of a guide groove, an auxiliary presser foot plate, an elastic part and a limit part into the presser foot of a flat sewing machine, the relative position coordination between the presser foot base plate and the auxiliary presser foot plate is controlled, the adaptability is improved and smooth feeding is ensured.
In the "bone pressing and starting" process, the fabric can be better pressed to avoid jamming, ensuring smooth feeding and beautiful stitches.
Smart Images
Figure CN223373365U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of sewing equipment, and in particular to a presser foot of a flat sewing machine and a flat sewing machine. Background Art
[0002] A sewing machine uses one or more threads to create one or more seams on the material being sewn, interweaving or stitching one or more layers of material. Sewing machines can sew fabrics such as cotton, linen, silk, wool, and synthetic fibers, as well as products such as leather, plastic, and paper. The seams are neat, beautiful, smooth, and strong, while also being fast and easy to use. The presser foot is a crucial component of a sewing machine, applying pressure to the material to prevent it from shifting and ensuring proper sewing.
[0003] The presser foot used in existing sewing machines has a movable base. During the "bone-pressing and starting" process, the fabric is higher in the middle and lower on both sides due to the presence of the bone. This reduces contact between the feed teeth and the fabric, preventing the starting fabric from being fed and causing jamming. In severe cases, there is a risk of needle jamming and breakage. This leaves room for improvement. Utility Model Content
[0004] The present application provides a presser foot for a flat sewing machine, which can control the relative position coordination between the presser foot base plate and the auxiliary presser foot plate to improve adaptability.
[0005] The present application provides a presser foot for a flat sewing machine, comprising:
[0006] A presser foot sole, wherein two opposite sides of the presser foot sole are provided with guide grooves;
[0007] Auxiliary presser foot plates are arranged in pairs on two opposite sides of the presser foot base, and each auxiliary presser foot plate is slidably fitted in the guide groove on the corresponding side;
[0008] An elastic member acts between the presser foot bottom plate and each of the auxiliary presser foot plates, and is used to drive each of the auxiliary presser foot plates to reset;
[0009] A limiting member is connected to the presser foot bottom plate in an adjustable height, and the upward movement stroke of each auxiliary presser foot plate is limited by the limiting member.
[0010] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution. They are merely further supplements or optimizations. Under the premise that there are no technical or logical contradictions, each optional method can be combined separately for the above-mentioned overall solution, or multiple optional methods can be combined.
[0011] In one embodiment, the limiting member is respectively configured for each auxiliary presser foot plate, and the relative position of each limiting member and the presser foot bottom plate is independently adjusted.
[0012] In one embodiment, each of the limiting members includes:
[0013] The plate body is abutted against the horizontal side of the presser foot bottom plate, and the top side of the auxiliary presser foot plate is provided with a mounting post extending into the corresponding guide groove, and the plate body and the presser foot bottom plate cooperate with each other to buckle the mounting post into the corresponding guide groove;
[0014] A limit pin is fixed to the plate body, and when the auxiliary presser foot plate rises to a limit position relative to the presser foot bottom plate, it is blocked by the limit pin.
[0015] In one embodiment, the elastic member is connected between the presser foot base and the mounting posts of each of the auxiliary presser foot plates.
[0016] In one embodiment, the auxiliary presser foot comprises:
[0017] A pressure strip, wherein when the presser foot bottom plate rises to the limit position, the top surface of the pressure strip abuts against the limit pin;
[0018] The mounting column is vertically fixed to the pressure strip.
[0019] In one embodiment, the plate body is provided with a first hole, and is connected to the presser foot base plate in an adjustable height via a fastener passing through the first hole.
[0020] In one embodiment, a mutually cooperating turning limiting structure is provided between the plate body and the presser foot bottom plate.
[0021] In one embodiment, the rollover limiting structure includes:
[0022] A second hole is formed in the plate body;
[0023] A guide pin is fixed to the presser foot bottom plate and extends into the second hole.
[0024] In one embodiment, the extending directions of the first holes and the second holes are parallel to each other.
[0025] The present application also provides a flat sewing machine, comprising the flat sewing machine presser foot described in the above technical solution.
[0026] The technical solution disclosed in the present application controls the relative position of the auxiliary presser foot through a limiter, thereby achieving position coordination between the presser foot base and the auxiliary presser foot, and improving adaptability; especially in the "bone pressing and starting" process, it can better press the fabric, making the feeding smooth and the stitches beautiful. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0028] Figure 1 This is a schematic diagram of the presser foot structure of a flat sewing machine in one embodiment of the present application;
[0029] Figure 2 for Figure 1 Schematic diagram of the presser foot of the interlock sewing machine from above;
[0030] Figure 3 for Figure 1 Schematic diagram of the presser foot coordination structure of the interlock sewing machine;
[0031] Figure 4 for Figure 2 Schematic diagram of the cross section at AA in the middle;
[0032] Figure 5 This is a schematic diagram of the coordination between the presser foot limit pin and the auxiliary presser foot plate of a flat sewing machine in one embodiment of the present application.
[0033] The reference numerals of the components are as follows:
[0034] 100, presser foot plate; 110, guide groove; 120, avoidance groove;
[0035] 200, auxiliary presser foot; 210, press strip; 220, mounting column;
[0036] 300, elastic member; 310, adapter hole;
[0037] 400, limit member; 410, plate; 411, first hole; 412, fastener; 413, second hole; 414, guide pin; 420, limit pin. DETAILED DESCRIPTION
[0038] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.
[0039] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.
[0040] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.
[0041] In this application, unless otherwise clearly specified and limited, when a first feature is “above” or “below” a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level (or in a state of use, or from a certain perspective of the drawing) than the second feature. When a first feature is “below”, “below” or “below” a second feature, it can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level (or in a state of use, or from a certain perspective of the drawing) than the second feature.
[0042] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.
[0043] Reference Attachment Figure 1 To the attached Figure 4 As shown, the present application provides a presser foot for a flat sewing machine, comprising:
[0044] The presser foot sole 100 has guide grooves 110 formed on two opposite sides of the presser foot sole 100;
[0045] Auxiliary presser foot plates 200 are arranged in pairs on two opposite sides of the presser foot base plate 100, and each auxiliary presser foot plate 200 is slidably fitted in the guide groove 110 on the corresponding side;
[0046] The elastic member 300 acts between the presser foot base 100 and each auxiliary presser foot plate 200 to drive each auxiliary presser foot plate 200 to reset;
[0047] The limiting member 400 is connected to the presser foot base plate 100 in an adjustable height, and the upward movement stroke of each auxiliary presser foot plate 200 is limited by the limiting member 400.
[0048] The auxiliary presser foot 200 can move relative to the presser foot base 100 under the guidance of the guide groove 110. The elastic member 300 can drive the auxiliary presser foot 200 to move in a preset direction, that is, to achieve reset. The limiter 400 can control the relative position of the auxiliary presser foot 200, especially the limit position of the upward movement stroke of each auxiliary presser foot 200, thereby achieving the positional coordination between the presser foot base 100 and the auxiliary presser foot 200. While the auxiliary presser foot 200 can be adaptively adjusted relative to the presser foot base 100, it also provides adjustable limit positions, thereby improving adaptability. In particular, during the "bone-starting" process, it can better compress the fabric, ensure smooth feeding, and produce beautiful stitches.
[0049] Regarding the matching form of the presser foot sole plate 100 and the auxiliary presser foot plate 200, see the attached Figure 1 To the attached Figure 4 As shown, the auxiliary presser foot plate 200 includes:
[0050] When the presser bar 210 and the presser foot sole 100 rise to the limit position, the top surface of the presser bar 210 abuts against the limit member 400;
[0051] The mounting post 220 is vertically fixed to the holding strip 210 , and extends into the corresponding guide groove 110 .
[0052] The guide groove 110 can provide motion guidance for the mounting post 220. The above-mentioned motion guidance can be implemented in the motion direction of the auxiliary presser foot 200, and can also be implemented in other motion directions. For example, in the figure, the cross-sectional shape of the mounting post 220 is non-circular, and the cross-sectional shape of the guide groove 110 is adapted to the cross-sectional shape of the mounting post 220. That is, the mounting post 220 is circumferentially limited in the guide groove 110. Furthermore, the elastic member 300 is connected between the presser foot base plate 100 and the mounting post 220 of each auxiliary presser foot 200. The elastic member 300 is a torsion spring, and the top ends of the presser foot base plate 100 and the mounting post 220 are provided with an adapter hole 310, and the two ends of the torsion spring are respectively passed through the corresponding adapter holes 310. The torsion spring body is arranged outside the presser foot base plate 100 to provide sufficient winding space.
[0053] Regarding the specific configuration of the position limiting member 400, the position limiting member 400 can be uniformly configured for each auxiliary presser foot plate 200 to improve the coordination of component movement. Figure 3 To the attached Figure 5In the embodiment shown, the limiting member 400 is configured for each auxiliary presser foot plate 200, and the relative position of each limiting member 400 and the presser foot base plate 100 is independently adjusted to improve adaptability. Further, each limiting member 400 includes:
[0054] The plate body 410 is attached to the horizontal side of the presser foot sole plate 100. The top side of the auxiliary presser foot plate 200 is provided with a mounting post 220 extending into the corresponding guide groove 110. The plate body 410 and the presser foot sole plate 100 cooperate with each other to snap the mounting post 220 into the corresponding guide groove 110.
[0055] The limit pin 420 is fixed to the plate body 410 . When the auxiliary presser foot plate 200 rises to the limit position relative to the presser foot base plate 100 , it is blocked by the limit pin 420 , that is, it abuts against the limit pin 420 .
[0056] When the auxiliary presser foot 200 and the limit pin 420 are against each other, the limit pin 420 determines the spatial position through the plate body 410 and the presser foot sole 100, thereby ensuring the spatial position relationship between the auxiliary presser foot and the presser foot sole 100. The limit pin 420 and the plate body 410 can be an integral structure, for example, formed by extending a part of the material of the plate body 410 and the extension direction is perpendicular to the movement direction of the auxiliary presser foot 200. The limit pin 420 and the plate body 410 can also be a split structure with reference to the figure, that is, a process hole perpendicular to the movement direction of the auxiliary presser foot 200 is provided on the plate body 410, and the limit pin 420 is inserted into the process hole. To ensure stability, the plate body 410 and the limit pin 420 are fixedly arranged, such as the one-piece molding mentioned above, or a stable connection is achieved by welding, bonding, clamping, interference, etc. after the split assembly.
[0057] In order to improve the adaptability of the limiting member 400, the plate body 410 in the figure is provided with a first hole 411, and is connected to the presser foot base plate 100 in a height-adjustable manner via a fastener 412 that is inserted through the first hole 411. By adjusting the relative position of the plate body 410 relative to the presser foot base plate 100, the relative position of the limiting pin 420 relative to the presser foot base plate 100 can be adjusted, thereby adjusting the relative position between the auxiliary presser foot 200 and the presser foot base plate 100. Furthermore, the presser foot base plate 100 is provided with an avoidance groove 120 for avoiding the limiting pin 420. Under the premise of a certain overall volume of the device, the adjustment formation of the limiting pin 420 is improved, thereby improving the adaptability of the presser foot as a whole. In the overall device, the plate bodies 410 of each limiting member 400 are respectively located on both sides of the presser foot base plate 100, and the fastener 412 is exposed to the side of the presser foot to facilitate adjustment and maintenance. The fastener 412 adopts a countersunk head design to provide a regular appearance surface for the outside of the presser foot, thereby preventing the adjustable structure from negatively affecting the sewing operation.
[0058] In order to provide stability for the plate 410, in the adjustable direction of the plate 410, the connection position between the plate 410 and the presser foot sole 100, as well as the limit pin 420 and the auxiliary presser foot 200 are aligned with each other to prevent the auxiliary presser foot 200 from impacting the limit pin 420 and causing the plate 410 to rotate relative to the presser foot sole 100. Figure 3 and Figure 4 In the embodiment shown, a mutually cooperating turning limiting structure is provided between the plate body 410 and the presser foot sole plate 100. Further, the turning limiting structure includes:
[0059] The second hole 413 is formed in the plate 410;
[0060] The guide pin 414 is fixed to the presser foot base 100 and extends into the second hole 413 .
[0061] The second hole 413 and the guide pin 414 cooperate to ensure the stable assembly of the plate body 410 while increasing the adjustable travel of the limit pin 420 relative to the presser foot base 100, thereby increasing the adjustable travel between the auxiliary presser foot plate 200 and the presser foot base 100. To accommodate the height adjustment of the plate body 410, the first hole 411 and the second hole 413 extend in parallel with each other.
[0062] The guide pin 414 is cylindrical and one end is inserted into the opening on the presser foot base plate 100 for fixation, and the other end is slidably fitted into the second hole 413. It is understandable that the relative positions of the second hole 413 and the guide pin 414 can also be interchanged. For example, the second hole 413 can also be set on the presser foot base plate 100 and the guide pin 414 can be fixed on the plate body 410. Figure 3 In the illustrated embodiment, the guide pin 414 is a circumferentially open structure, that is, the cross section is C-shaped, which can provide the guide pin 414 with a certain elasticity to improve the adaptability of assembly.
[0063] In terms of assembly details, the presser foot base 100 includes a connecting portion located at the top and a presser foot portion located below the connecting portion. The presser foot portion and the pressure strip 210 of the auxiliary presser foot 200 together constitute the portion where the entire presser foot device contacts the fabric. The connecting portion is used to connect to the drive components of the sewing machine. The connecting portion extends outward from both sides of the horizontal square to form a travel limit seat and is respectively provided with a limit member 400. The limit seat is provided with the guide groove 110 mentioned above for matching the mounting column 220, a connecting hole for connecting the fastener 412, an avoidance groove 120 for avoiding the limit pin 420, and an adapter hole 310 for connecting the elastic member 300. When the limit pin 420 is completely located in the avoidance groove 120, the pressure strip 210 of the auxiliary presser foot 200 can move to abut against the lower surface of the limit seat. At this time, the lower surface of the pressure strip 210 is flush with the lower surface of the presser foot portion.
[0064] See attached Figure 5As shown, when the limit pin 420 is adjusted downward with the plate body 410 relative to the presser foot base 100 and locked by the fastener 412, the upward stroke of the pressure strip 210 is limited by the limit pin 420, thereby limiting the adaptive adjustment stroke of the auxiliary presser foot 200 under the action of the elastic member 300. The lower surface of the pressure strip 210 of the auxiliary presser foot 200 is lower than the lower surface of the presser foot, forming a preset presser foot shape, thereby adapting to specific process requirements. For example, in the "bone pressing and starting" process mentioned above, it can better press the fabric, make the feeding smooth, and the stitches beautiful. Accordingly, the plate body 410 in this embodiment can be quickly adjusted by adjusting the fastener 412, thereby quickly adjusting the position of the auxiliary presser foot 200 and improving production efficiency.
[0065] The present application also provides a flat sewing machine, including the flat sewing machine presser foot of the above technical solution. The flat sewing machine presser foot can be described in detail above, and the other parts of the flat sewing machine can be implemented in combination with existing technologies and will not be described in detail here.
[0066] The technical features of the above-described embodiments may be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as no contradiction exists between these combinations of technical features, they should be considered to be within the scope of this specification. When technical features in different embodiments are embodied in the same drawing, it can be deemed that the drawing also discloses examples of combinations of the various embodiments involved.
[0067] The above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.
Claims
1. Presser foot for interlock sewing machines, characterized in that: include: A presser foot sole, wherein two opposite sides of the presser foot sole are provided with guide grooves; Auxiliary presser foot plates are arranged in pairs on two opposite sides of the presser foot base, and each auxiliary presser foot plate is slidably fitted in the guide groove on the corresponding side; An elastic member acts between the presser foot bottom plate and each of the auxiliary presser foot plates, and is used to drive each of the auxiliary presser foot plates to reset; A limiting member is connected to the presser foot bottom plate in an adjustable height, and the upward movement stroke of each auxiliary presser foot plate is limited by the limiting member.
2. The presser foot of the interlock sewing machine according to claim 1, characterized in that: The limiting member is respectively configured for each auxiliary presser foot plate, and the relative position of each limiting member and the presser foot bottom plate is independently adjusted.
3. The presser foot for a flat seam sewing machine according to claim 1, wherein: Each of the limiting members includes: The plate body is abutted against the horizontal side of the presser foot bottom plate, and the top side of the auxiliary presser foot plate is provided with a mounting post extending into the corresponding guide groove, and the plate body and the presser foot bottom plate cooperate with each other to buckle the mounting post into the corresponding guide groove; A limit pin is fixed to the plate body, and when the auxiliary presser foot plate rises to a limit position relative to the presser foot bottom plate, it is blocked by the limit pin.
4. The presser foot for a flat seam sewing machine according to claim 3, wherein: The elastic member is connected between the presser foot bottom plate and the mounting posts of each auxiliary presser foot plate.
5. The presser foot for a flat seam sewing machine according to claim 3, characterized in that: The auxiliary presser foot comprises: A pressure strip, wherein when the presser foot bottom plate rises to the limit position, the top surface of the pressure strip abuts against the limit pin; The mounting column is vertically fixed to the pressure strip.
6. The presser foot for a flat seam sewing machine according to claim 3, characterized in that: The plate body is provided with a first hole and is connected to the presser foot bottom plate in an adjustable height via a fastener passing through the first hole.
7. The presser foot for a flat seam sewing machine according to claim 6, wherein: A turning limiting structure that cooperates with each other is provided between the plate body and the presser foot bottom plate.
8. The presser foot for a flat seam sewing machine according to claim 7, wherein: The rollover limiting structure comprises: A second hole is formed in the plate body; A guide pin is fixed to the presser foot bottom plate and extends into the second hole.
9. The presser foot for a flat seam sewing machine according to claim 8, characterized in that: The extending directions of the first holes and the second holes are parallel to each other.
10. Interlock sewing machine, characterized in that, The invention comprises the presser foot of a flat sewing machine according to any one of claims 1 to 9.