Sewing machine needle with replaceable thread guide plate

Abstract

A sewing machine needle with a replaceable thread plate comprises a needle body, a thread plate and a pressing plate. The needle body has a first groove arranged at one end, and a second groove arranged at the side of the needle body not facing at least one yarn and connected to the first groove. The thread plate has an assembly section arranged in the first groove, a limiting section connected to the assembly section and arranged in the second groove, and a thread section extending from the side of the assembly section not connected to the limiting section and forming a plurality of thread holes. The pressing plate is installed on the side of the needle body where the second groove is arranged, and at least the limiting section of the thread plate is pressed.

Description

Technical Field

[0001] The invention relates to a sewing machine needle, in particular to a sewing machine needle with a replaceable thread plate. Background Art

[0002] The applicant of this case has proposed a sewing machine needle, as disclosed in Taiwan Patent Publication No. 201725295, which includes a base and a thread passing assembly. The base is made of a first material, and the base has an assembly rod disposed on the top and an assembly groove disposed on a side away from the assembly rod. The thread passing assembly is made of a second material, which is different from the first material, and the hardness of the second material is greater than the hardness of the first material. The thread passing assembly has an assembly section bonded to the assembly groove, a thread passing section extending from the assembly section in a direction away from the base, and a plurality of thread passing holes disposed on the thread passing section.

[0003] However, the aforementioned thread-guiding component is only implemented by gluing during assembly. When the thread-guiding component is in a long-term sewing situation, the long-term pulling of the yarn will cause the thread-guiding component to abnormally fall off relative to the seat body easily, and when the thread-guiding component falls off, the residual glue will affect the assembly of another thread-guiding component that is replaced, and the residual glue needs to be processed in advance. Summary of the invention

[0004] The main purpose of the present invention is to solve the problem that the conventional structure is prone to abnormal separation due to yarn pulling in the case of long-term sewing.

[0005] To achieve the above-mentioned purpose, the present invention provides a sewing machine needle with a replaceable thread plate, comprising a needle body, a thread plate and a pressure plate. The needle body has a first groove arranged at one end and a second groove arranged on the side of the needle body not facing at least one yarn and connected to the first groove, and the second groove includes a first section connected to the first groove and a second section connected to the first section and having a width greater than the first section. The thread plate has an assembly section arranged in the first groove, a limiting section connected to the assembly section and arranged in the second groove, and a thread section extending from the side of the assembly section not connected to the limiting section and forming a plurality of thread holes, and the limiting section includes a neck arranged corresponding to the first section and a head arranged in the second section and limited by the first section of the second groove. The pressure plate is installed on the side of the needle body where the second groove is arranged, and at least the limiting section of the thread plate is pressed.

[0006] In one embodiment, the pressing plate is placed in the second groove, and the second groove has a third section extending from the second section and providing the pressing plate to be placed therein.

[0007] In one embodiment, the needle body has a mounting hole disposed in the third section of the second groove and providing a pressure plate assembly.

[0008] In one embodiment, the pressing plate includes a mounting portion located in the second groove and a pressing portion connected to the mounting portion and pressing the limiting section of the wire-passing plate, and the pressing portion and the mounting portion are located in different horizontal planes.

[0009] In one embodiment, the needle body has a plurality of sewing needle mounting holes in the first groove, the thread passing plate has at least one needle passing hole corresponding to the sewing needle mounting holes, the sewing needle mounting holes have a first extension line, and each of the thread passing holes has a second extension line that can be interlaced with the first extension line.

[0010] In one embodiment, the second groove is in a cone shape, and the head is located at the widest part of the second groove.

[0011] In one embodiment, the needle body is made of a first material, and the thread plate is made of a second material different from the first material.

[0012] Through the above implementation of the present invention, compared with the conventional method, the following features are provided: the sewing machine needle uses the second groove to position the thread guide plate in the first stage, and then cooperates with the pressure plate to position the thread guide plate in the second stage, so that the thread guide plate will not fall off abnormally during the sewing process. In addition, through such a design, the problem of the thread guide plate being difficult to replace due to the adhesive assembly can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of an embodiment of the present invention installed on a sewing machine.

[0014] Figure 2 A schematic structural diagram of a sewing machine needle according to an embodiment of the present invention.

[0015] Figure 3 A schematic diagram of the structural decomposition of a sewing machine needle according to an embodiment of the present invention.

[0016] Figure 4 A schematic diagram of the structural decomposition of a sewing machine needle according to an embodiment of the present invention from another angle.

[0017] Figure 5 A schematic side view of the structure of a needle body according to an embodiment of the present invention.

[0018] Figure 6 A schematic bottom view of the structure of a sewing machine needle according to an embodiment of the present invention.

[0019] Figure 7 A schematic cross-sectional view of the structure of a sewing machine needle according to an embodiment of the present invention.

[0020] Among them, 10: sewing machine needle tip; 11: needle tip body; 111: first groove; 112: second groove; 113: first section; 114: second section; 115: third section; 116: mounting hole; 117: sewing needle mounting hole; 118: first extension line; 13: thread plate; 131: assembly section; 132: limiting section; 133: thread section; 134: neck; 135: head; 136: thread hole; 137: needle hole; 138: second extension line; 14: pressing plate; 141: mounting part; 142: pressing part; 15: pressing plate assembly; 20: sewing needle; 21: needle tip driving rod; 22: sewing machine presser foot. DETAILED DESCRIPTION

[0021] The detailed description and technical contents of the present invention are now described as follows with reference to the accompanying drawings.

[0022] See also Figure 1 The present invention provides a sewing machine needle 10 with a replaceable thread plate, wherein a plurality of sewing needles 20 are mounted on the sewing machine needle 10 and can be driven by a needle driving rod 21 to generate reciprocating motion. Figures 1 to 7 The sewing machine needle 10 comprises a needle body 11 which can be assembled with the needle driving rod 21, a thread passing plate 13 and a pressing plate 14. The needle body 11 has a first groove 111 provided at one end, and a second groove 112 provided at a side of the needle body 11 which does not face at least one yarn and is connected to the first groove 111. Further, the first groove 111 is provided at a side of the needle body 11 which is not connected with the needle driving rod 21, that is, a side facing a sewing machine presser foot 22. In one embodiment, the first groove 111 passes through two opposite sides of the sewing machine needle 10, and one side through which the first groove 111 passes is the side of the sewing machine needle 10 facing the yarn (not shown in the figure), and this side is defined as the front side of the sewing machine needle 10, and the other side through which the first groove 111 passes is the back side of the sewing machine needle 10. On the other hand, the second groove 112 of the present invention is provided on the back side of the sewing machine needle 10 mentioned above, and the surface where the second groove 112 is located is perpendicular to the surface where the first groove 111 is located. In addition, the second groove 112 includes a first section 113 connected to the first groove 111 and a second section 114 connected to the first section 113 and having a width greater than the first section 113.

[0023] As mentioned above, the thread passing plate 13 has an assembly section 131 disposed in the first groove 111, a limiting section 132 connected to the assembly section 131 and disposed in the second groove 112, and a thread passing section 133 extending from the side of the assembly section 131 not connected to the limiting section 132. The limiting section 132 includes a neck 134 disposed corresponding to the first section 113 of the second groove 112, and a head 135 disposed in the second section 114 of the second groove 112 and limited by the first section 113 of the second groove 112. In addition, a plurality of thread passing holes 136 are formed on the thread passing section 133, which can provide the yarn for passing. In one embodiment, the needle body 11 is made of a first material, and the thread passing plate 13 is made of a second material different from the first material. For example, the first material is metal, and the second material is ceramic. On the other hand, the pressing plate 14 is installed on one side of the needle body 11 where the second groove 112 is provided, and the pressing plate 14 at least presses the limiting section 132 of the wire passing plate 13. In one embodiment, the second groove 112 is a cone, and the head 135 is provided at the widest part of the second groove 112.

[0024] As mentioned above, when the sewing machine needle 10 is initially assembled, the thread plate 13 is first assembled with the needle body 11, and the assembly section 131 of the thread plate 13 is inserted into the first groove 111, and the limiting section 132 of the thread plate 13 is inserted into the second groove 112. The head 135 of the limiting section 132 is limited by the structure of the second groove 112, so that the thread plate 13 is positioned in the first stage. Thereafter, the pressing plate 14 is arranged corresponding to the side of the sewing machine needle 10 that is not facing the yarn, and at least the limiting section 132 of the thread plate 13 is pressed, so that the thread plate 13 is positioned in the second stage. In this way, the thread plate 13, which is not the original structure of the needle body 11, can be limited by the second groove 112 structure and the pressing plate 14 at the same time during sewing, and will not fall off during the sewing process. In addition, the present invention allows the wire plate 13 to be easily replaced through this design.

[0025] Please refer to Figure 3 and Figure 5In one embodiment, the pressing plate 14 is disposed in the second groove 112, and the second groove 112 further has a third section 115 extending from the second section 114 and providing the pressing plate 14 to be disposed therein. It should be understood that in this embodiment, the pressing plate 14 is not only disposed in the third section 115 of the second groove 112, but is also disposed in the second section 114 of the second groove 112 to press the head 135 in the second section 114. Furthermore, the needle body 11 may further have a mounting hole 116 disposed in the third section 115 of the second groove 112 and providing a pressing plate assembly 15 to be disposed therein, and the aforementioned pressing plate assembly 15 may be a screw. In addition, in one embodiment, the pressing plate 14 includes a mounting portion 141 located in the second groove 112 and a pressing portion 142 connected to the mounting portion 141 and pressing the limiting segment 132 of the wire-passing plate 13, and the pressing portion 142 and the mounting portion 141 are located at different horizontal planes, as shown in FIG. Figure 3 and Figure 7 Painted.

[0026] Please refer to Figure 7 In one embodiment, the needle body 11 has a plurality of sewing needle mounting holes 117 in the first groove 111, and the thread passing plate 13 has at least one needle passing hole 137 corresponding to the sewing needle mounting holes 117, and the sewing needle mounting holes 117 have a first extension line 118, and each of the thread passing holes 137 has a second extension line 138 that can be staggered with the first extension line 118.

[0027] The above is only a preferred embodiment of the present invention, and should not be used to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the scope of the patent application of the present invention should still fall within the scope of the patent of the present invention.

Claims

1. A sewing machine needle with a replaceable thread guide plate, characterized in that: Include: A needle body having a first groove disposed at one end, and a second groove disposed at a side of the needle body not facing at least one yarn and connected to the first groove, wherein the second groove comprises a first section connected to the first groove and a second section connected to the first section and having a width greater than that of the first section; A wire-passing plate, comprising an assembly section disposed in the first slot, a limiting section connected to the assembly section and disposed in the second slot, and a wire-passing section extending from a side of the assembly section not connected to the limiting section and forming a plurality of wire-passing holes, the limiting section comprising a neck portion disposed corresponding to the first section and a head portion disposed in the second section and limited by the first section of the second slot; and A pressing plate, the pressing plate comprising a mounting portion located in the second groove and a pressing portion connected to the mounting portion and pressing the limiting section of the wire-passing plate, the pressing portion and the mounting portion being located at different horizontal planes; The second slot has a third section extending from the second section and providing the pressing plate to be disposed therein; The needle body has a mounting hole disposed in the third section of the second groove and provided with a pressing plate assembly; The needle body has a plurality of sewing needle mounting holes in the first groove, the thread plate has at least one needle hole corresponding to the sewing needle mounting holes, the sewing needle mounting holes have a first extension line, and each of the thread holes has a second extension line that can be staggered with the first extension line; The second groove is in a cone shape, and the head is arranged at the widest part of the second groove.

2. The sewing machine needle with replaceable thread plate according to claim 1, wherein: The needle body is made of a first material, and the thread plate is made of a second material different from the first material.

3. The sewing machine needle with replaceable thread plate according to claim 1, wherein: The needle body is made of a first material, and the thread plate is made of a second material different from the first material; The first material is metal, and the second material is ceramic.

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