Sewing machine presser foot

Abstract

The utility model discloses a sewing machine presser foot belongs to sewing machine accessory technical field, specifically includes presser foot main part and gasket, is equipped with the adhesive layer between gasket and presser foot main part, and the both ends of presser foot main part are all equipped with the clamping slot downwards, and the slot wall on the middle part of each clamping slot is equipped with a positioning slot, too. The both ends of gasket are equipped with the card station, and the position corresponding every positioning slot in the middle part of card station has the positioning lug of integrated molding. The utility model discloses, and the clamping slot is opened out integrally at the front, rear both ends of presser foot respectively, and can effectively promote the stability of assembly between gasket and presser foot simultaneously in the cooperation setting of positioning slot and positioning lug, with the cooperation of clamping slot and card station, and the cooperation of positioning slot and positioning lug, even under the situation of high frequency vibration, can effectively prevent gasket and appear front, back, left, right displacement, and then combine the auxiliary fixing of adhesive layer, can effectively promote the stability of assembly between gasket and presser foot.

Description

Technical Field

[0001] This utility model belongs to the technical field of sewing machine accessories, specifically relating to a sewing machine presser foot. Background Technology

[0002] Currently, the rubber sheet or pad at the bottom of conventional sewing machine presser feet is mostly fixed with double-sided tape or glue, or with screws. The bottom surface of conventional sewing machine presser feet is mostly a smooth surface design, and the rubber sheet or pad is completely fixed to the presser foot by adhesive or screws. During the high-frequency vibration of the sewing machine, and when there is friction between the presser foot and the fabric, the rubber sheet or pad fixed at the bottom of the presser foot is prone to displacement or falling off. Especially in the case of screw fixing, once the screws loosen, they can easily scratch the fabric.

[0003] Therefore, we have made improvements to the traditional sewing machine presser foot structure and proposed an improved sewing machine presser foot. Utility Model Content

[0004] The purpose of this invention is to provide a sewing machine presser foot to solve the aforementioned problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sewing machine presser foot specifically includes a presser foot body and a pad. An adhesive layer is provided between the pad and the presser foot body to assist in fixing the pad and the presser foot body, ensuring an effective fit between the two. To prevent the pad at the bottom of the presser foot from shifting forward or backward or left or right due to friction with the fabric under the influence of high-frequency vibration generated during the operation of the sewing machine, grooves are provided at both ends of the presser foot body facing downward. At the same time, a locking platform is provided at both ends of the pad, and a positioning notch is provided on the groove wall in the middle of each groove.

[0007] Furthermore, the bottom surfaces at both ends of the presser foot can be either designed with an upward-curved arc or a horizontal surface.

[0008] Furthermore, in order to improve the fit between the gasket and the two ends of the presser foot body and avoid obvious gaps after assembly, the sizes of the locking platforms and slots at both ends of the gasket are matched. After the locking platforms are inserted into the slots, the complementary relationship between the locking platforms and slots makes the bottom of the gasket and the bottom of the presser foot form a flat whole.

[0009] Furthermore, the gasket is integrally molded from polytetrafluoroethylene (PTFE). Utilizing the low friction properties of PTFE, the smoothness of the fabric sliding under the presser foot can be effectively improved, thereby reducing the risk of the gasket shifting and falling off due to vibration or friction.

[0010] Furthermore, the adhesive layer uses nano-level environmentally friendly double-sided tape, which is more environmentally friendly than traditional adhesives containing volatile organic compounds.

[0011] Beneficial effects:

[0012] The presser foot structure proposed in this utility model changes the traditional smooth surface design of the bottom of the sewing machine presser foot. It has integrated slots at both the front and rear ends of the presser foot, and a positioning notch in the middle of the slots. With the integrated slot platform structure and positioning protrusions at both ends of the gasket, the stability of the assembly between the gasket and the presser foot can be effectively improved. With the cooperation of the slots and slot platforms, as well as the cooperation of the positioning notch and positioning protrusions, even under high-frequency vibration, the gasket can be effectively prevented from shifting forward, backward, left, or right. Combined with the auxiliary fixation of the adhesive layer, the stability of the assembly between the gasket and the presser foot can be effectively improved, thereby avoiding the excessive reliance on the adhesive layer for fixing the gasket and the presser foot, and effectively extending the service life of the presser foot. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the pressure foot structure in this utility model;

[0015] Figure 3 This is a schematic diagram of the gasket structure in this utility model.

[0016] In the diagram: 1. Presser foot body; 101. Slot; 102. Positioning notch; 2. Gasket; 201. Slot; 202. Positioning protrusion; 3. Adhesive layer. Detailed Implementation

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0018] Example:

[0019] To address the instability issues inherent in traditional assembly methods between the presser foot and its bottom rubber sheet or pad, we propose an improved presser foot, the specific solution of which is as follows:

[0020] like Figures 1-3As shown, this embodiment provides a sewing machine presser foot, specifically comprising a presser foot body 1 and a pad 2. An adhesive layer 3 is provided between the pad 2 and the presser foot body 1 to assist in fixing the pad 2 and the presser foot body 1, ensuring effective fit between them. To prevent the pad 2 at the bottom of the presser foot from shifting forward / backward or left / right due to friction with the fabric caused by the high-frequency vibration generated during sewing machine operation, grooves 101 are provided downwards at both ends of the presser foot body 1. Similarly, a retaining platform 201 is provided at both ends of the pad 2. A positioning notch 102 is provided on the groove wall in the middle of each groove 101, and a positioning protrusion 202 is integrally formed in the middle of the retaining platform 201 at both ends of the pad 2, corresponding to the position of each positioning notch 102. This structural design departs from the traditional smooth surface design of the bottom of a sewing machine presser foot. The front and rear ends of the presser foot are integrally formed with slots 101, and a positioning notch is formed in the middle of the slots 101. With the integrated design of the mounting platform 201 and the positioning protrusion 202 at both ends of the pad 2, the assembly stability between the pad 2 and the presser foot can be effectively improved. With the cooperation of the slots 101 and the mounting platform 201, as well as the cooperation of the positioning notch 102 and the positioning protrusion 202, even under high-frequency vibration, the pad 2 can be effectively prevented from shifting forward, backward, left, or right. Combined with the auxiliary fixation of the adhesive layer 3, the assembly stability between the pad 2 and the presser foot can be effectively improved, thereby avoiding the excessive reliance on the adhesive layer 3 for fixing the pad 2 and the presser foot. This can effectively improve the service life of the presser foot. Moreover, the slot design 101 at both ends of the presser foot body 1 can also improve the positioning and calibration efficiency of the pad 2 during assembly when viewed from the side.

[0021] The bottom surfaces at both ends of the presser foot can be either designed with an upward-curved arc or a horizontal surface.

[0022] To improve the fit between the pad 2 and the two ends of the presser foot body 1 and avoid obvious gaps after assembly, the sizes of the locking platforms 201 and the locking slots 101 at both ends of the pad 2 are adapted to each other. After the locking platforms 201 are inserted into the locking slots 101, the complementary relationship between the locking platforms 201 and the locking slots 101 makes the bottom of the pad 2 and the bottom of the presser foot form a flat whole. At the same time, the size of the positioning notch 102 is adapted to the size of the positioning protrusion 202. After the locking platforms 201 are inserted into the locking slots 101, the positioning notch 102 and the positioning protrusion 202 cooperate to limit the left and right movement of the pad 2. This can further improve the fit between the pad 2 and the presser foot body 1, thereby avoiding micro-vibration between the pad 2 and the presser foot body 1 when used in a high-frequency vibration environment.

[0023] The pad 2 is made of polytetrafluoroethylene in one piece. Utilizing the low friction properties of polytetrafluoroethylene, it can effectively improve the smoothness of the fabric sliding through the bottom of the presser foot, thereby reducing the risk of the pad 2 shifting and falling off due to vibration or friction.

[0024] The adhesive layer 3 uses nano-grade environmentally friendly double-sided tape, which is more environmentally friendly than traditional adhesives containing volatile organic compounds.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A sewing machine presser foot, comprising a presser foot body (1) and a pad (2), wherein an adhesive layer (3) is provided between the pad (2) and the presser foot body (1), characterized in that, Both ends of the presser foot body (1) are provided with slots (101) facing downwards, and each slot (101) has a positioning notch (102) on the groove wall in the middle. Both ends of the gasket (2) are provided with a locking platform (201), and a positioning protrusion (202) is integrally formed in the middle of the locking platform (201) corresponding to the position of each positioning slot (102).

2. A sewing machine presser foot according to claim 1, characterized in that, The bottom surfaces at both ends of the presser foot can be either designed with an upward-curved arc or a horizontal surface.

3. A sewing machine presser foot according to claim 1, characterized in that, The size of the card platform (201) at both ends of the pad (2) is adapted to the size of the card slot (101). After the card platform (201) is inserted into the card slot (101), the card platform (201) and the card slot (101) complement each other so that the bottom of the pad (2) and the bottom of the presser foot form a planar whole.

4. A sewing machine presser foot according to claim 1, characterized in that, The size of the positioning notch (102) is adapted to the size of the positioning protrusion (202). After the card plate (201) is inserted into the card slot (101), the positioning notch (102) and the positioning protrusion (202) cooperate with each other to limit the left and right movement of the pad (2).

5. A sewing machine presser foot according to claim 1, characterized in that, The gasket (2) is integrally molded from polytetrafluoroethylene.

6. A sewing machine presser foot according to claim 1, characterized in that, The adhesive layer (3) uses nano-grade environmentally friendly double-sided adhesive.

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