Sewing machine needle bar capable of conveniently fixing needle head

Abstract

The sewing machine needle bar comprises a needle bar body, a detachable fixing assembly, a needle body, a positioning hole and a second threaded frame, the detachable fixing assembly is arranged at the bottom of the needle bar body, and the second threaded frame is arranged on the right side of the detachable fixing assembly. The needle head body is arranged at the bottom of the fixed detachable assembly, the positioning hole is formed in the right side of the needle head body, and the fixed detachable assembly comprises a fixed column, a first threaded frame, a clamping groove, a first through groove, a positioning column, a limiting groove, a containing groove and a fixed rod. The sewing machine needle bar with the needle head convenient to fix has the advantages of being good in fixing effect and convenient to take out, and solves the problems that when an existing sewing machine needle bar fixes a sewing needle, the sewing needle of different models cannot be fixed, the sewing needle is prone to loosening after being fixed, the sewing needle is damaged, and the sewing needle cannot be taken out conveniently. Meanwhile, the damaged sewing needle is clamped in an inner cavity of the fixing cap and cannot be taken out.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine needle bar technology, specifically to a sewing machine needle bar that facilitates fixing the needle. Background Technology

[0002] A sewing machine is a machine that uses one or more sewing threads to create one or more stitches on fabric, interweaving or sewing together one or more layers of fabric. Sewing machines can sew fabrics such as cotton, linen, silk, wool, and synthetic fibers, as well as products made of leather, plastic, and paper. The stitches produced are neat, beautiful, flat, and strong. Sewing is fast and easy to use. It has also given rise to art forms such as hand-pressed embroidery and computer embroidery. The sewing machine needle bar is one of the core components of the sewing machine, primarily responsible for driving the needle to complete its reciprocating motion.

[0003] Existing sewing machine needle bars cannot secure different types of needles when fixing them, and the needles are prone to loosening after being fixed, leading to needle damage. Furthermore, damaged needles can become stuck inside the fixing cap and cannot be removed. Therefore, there is an urgent need for a sewing machine needle bar that can easily fix the needle head and overcome the above defects. Summary of the Invention

[0004] The purpose of this invention is to provide a sewing machine needle bar that facilitates the fixing of the needle tip, which has the advantages of good fixing effect and easy removal, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sewing machine needle bar for convenient needle fixing, comprising a needle bar body, a fixed and detachable assembly, a needle body, a positioning hole, and a second threaded bracket. The fixed and detachable assembly is disposed at the bottom of the needle bar body, the second threaded bracket is disposed on the right side of the fixed and detachable assembly, the needle body is disposed at the bottom of the fixed and detachable assembly, and the positioning hole is opened on the right side of the needle body. The fixed and detachable assembly includes a fixing post, a first threaded bracket, a slot, a first through slot, a positioning post, a limiting slot, a receiving slot, a slider, a magnetic plate, a sliding groove, a spring, a fixing slot, and a fixing rod.

[0006] Furthermore, the first through groove is formed at the top of the fixing post, the limiting groove is formed at the bottom of the needle bar body, and the positioning post is disposed in the inner cavity of the limiting groove.

[0007] Furthermore, the bottom of the positioning post is fixedly connected to the bottom of the inner cavity of the first through groove, and the receiving groove is opened at the bottom of the fixed post.

[0008] Furthermore, the fixed column has sliding grooves inside and on both sides of the receiving groove, and a slider is slidably connected inside the sliding groove. A magnetic suction plate is fixedly installed on the side of the slider that is relatively close to the slider.

[0009] Further, the inner cavity of the sliding groove and the top of the sliding block are fixedly provided with a spring, the fixed grooves are arranged on the two sides of the bottom of the needle rod body, and the fixed rod slides in the inner cavity of the fixed groove.

[0010] Further, the side away from the fixed rod is fixedly connected with the inner cavity of the first through groove, the inner part of the positioning column is provided with a clamping groove, and the first threaded frame is rotatably connected with the back of the fixed column through threads.

[0011] Further, the front surface of the first threaded frame extends to the inner cavity of the limiting groove and extends to the inner part of the positioning column through the clamping groove, and the surface of the second threaded frame is rotatably connected with the surface of the fixed column through threads.

[0012] As the above-mentioned technology is adopted, the beneficial effects of the sewing machine needle rod are as follows:

[0013] The fixed detachable assembly is arranged on the needle rod body, the needle head body is fixedly arranged on the fixed column, the fixed column is arranged in the needle rod body through the limiting groove and the clamping groove, the fixed rod is arranged in the needle rod body through the fixed groove, the first threaded frame is arranged in the needle rod body and the positioning column through the limiting groove and the clamping groove, the second threaded frame is arranged in the needle rod body through the positioning hole, and the magnetic plate is arranged on the bottom of the needle rod body. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is another view structural schematic view of the fixed detachable assembly of the utility model;

[0016] Figure 3 It is a side surface cross section structural schematic view of the fixed detachable assembly of the utility model;

[0017] Figure 4 It is a structural schematic view of the utility modelFigure 3 Local enlarged view at middle A.

[0018] In the figure: 1, needle bar body; 2, fixed detachable assembly; 21, fixed column; 22, first threaded frame; 23, clamping groove; 24, first through groove; 25, positioning column; 26, limiting groove; 27, containing groove; 28, sliding block; 29, magnetic plate; 291, sliding groove; 292, spring; 293, fixed groove; 294, fixed rod; 3, needle head body; 4, positioning hole; 5, second threaded frame. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without making creative efforts fall within the protection scope of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without making creative efforts fall within the protection scope of the utility model.

[0020] The utility model provides a sewing machine needle bar convenient for fixing needle head as Figures 1-4 As shown in the figure, a sewing machine needle bar convenient for fixing needle head, including needle bar body 1, fixed detachable assembly 2, needle head body 3, positioning hole 4 and second threaded frame 5, fixed detachable assembly 2 sets up at the bottom of needle bar body 1, second threaded frame 5 sets up at the right side of fixed detachable assembly 2, needle head body 3 sets up at the bottom of fixed detachable assembly 2, positioning hole 4 is set up at the right side of needle head body 3, fixed detachable assembly 2 includes fixed column 21, first threaded frame 22, clamping groove 23, first through groove 24, positioning column 25, limiting groove 26, containing groove 27, sliding block 28, magnetic plate 29, sliding groove 291, spring 292, fixed groove 293 and fixed rod 294;

[0021] More specifically, the needle body 3 is fixed by the second threaded frame 5, and the fixed column 21 is sleeved on the surface of the needle rod body 1 according to the model of the needle body 3, and the positioning column 25 penetrates into the inside of the needle rod body 1 through the limiting groove 26, and then the fixing rod 294 penetrates into the inside of the needle rod body 1 through the fixing groove 293, so as to prevent shaking, and then the first threaded frame 22 is rotated, the first threaded frame 22 penetrates into the inside of the needle rod body 1, and then penetrates into the inside of the positioning column 25 through the limiting groove 26 and the clamping groove 23, so as to fix the fixed column 21, and after fixing, the needle body 3 is magnetically attracted to the bottom of the magnetic plate 29, and then the magnetic plate 29 is pushed upward, so that the magnetic plate 29 drives the sliding block 28 and the spring 292 to move upward, and after moving to the specified position, the second threaded frame 5 is rotated, the second threaded frame 5 penetrates into the inside of the needle body 3 through the positioning hole 4, so as to fix it, and when the needle body 3 is damaged, only the second threaded frame 5 needs to be rotated, and the sliding block 28 drives the magnetic plate 29 to move downward under the action of the sliding groove 291, so as to disassemble the needle body 3, which has the advantages of good fixing effect and convenient removal.

[0022] In some embodiments, the first through groove 24 is opened at the top of the fixed column 21, the limiting groove 26 is opened at the bottom of the needle rod body 1, and the positioning column 25 is arranged in the inner cavity of the limiting groove 26, and more specifically, the needle rod body 1 is accommodated by the first through groove 24, and the positioning column 25 is accommodated by the limiting groove 26.

[0023] In some embodiments, the bottom of the positioning column 25 is fixedly connected with the bottom of the inner cavity of the first through groove 24, and the accommodating groove 27 is opened at the bottom of the fixed column 21, and more specifically, the magnetic plate 29 is accommodated by the accommodating groove 27.

[0024] In some embodiments, the sliding groove 291 is arranged at the inside of the fixed column 21 and on both sides of the accommodating groove 27, the sliding groove 291 is slidably connected with the sliding block 28, and the magnetic plate 29 is fixedly installed on the side relatively close to the sliding block 28, and more specifically, the sliding block 28 is limited by the sliding groove 291 to prevent shaking during movement, and the magnetic plate 29 is limited by the sliding block 28 to prevent shaking during movement.

[0025] In some embodiments, the spring 292 is fixedly installed in the inner cavity of the sliding groove 291 and at the top of the sliding block 28, the fixing groove 293 is opened at both sides of the bottom of the needle rod body 1, and the fixing rod 294 slides in the inner cavity of the fixing groove 293, and more specifically, the sliding block 28 is reset by the spring 292, and the fixing rod 294 is limited by the fixing groove 293.

[0026] In some embodiments, the fixed rod 294 is fixedly connected to the inner cavity of the first through slot 24 on the side far away from the fixed rod 294, the inner part of the positioning column 25 is provided with a clamping groove 23, and the first threaded frame 22 is screwed on the back of the fixed column 21, and more specifically, the fixed rod 294 is arranged to limit the fixed column 21.

[0027] In some embodiments, the front surface of the first threaded frame 22 extends to the inner cavity of the limiting groove 26 and extends to the inner part of the positioning column 25 through the clamping groove 23, and the surface of the second threaded frame 5 is rotatably connected to the surface of the fixed column 21 through the thread, and more specifically, the first threaded frame 22 is arranged to fix the connection between the needle rod body 1 and the fixed column 21.

[0028] Working principle:

[0029] Step one: when using, the fixed column 21 is sleeved on the surface of the needle rod body 1 according to the model of the needle head body 3, the positioning column 25 extends to the inner part of the needle rod body 1 through the limiting groove 26, then the fixed rod 294 extends to the inner part of the needle rod body 1 through the fixed groove 293 to prevent shaking, then the first threaded frame 22 is rotated, the first threaded frame 22 extends to the inner part of the needle rod body 1 and extends to the inner part of the positioning column 25 through the limiting groove 26 and the clamping groove 23 in sequence, so as to fix the fixed column 21;

[0030] Step two: after fixing, the needle head body 3 is magnetically attracted to the bottom of the magnetic plate 29, then the magnetic plate 29 is pushed upward, so that the magnetic plate 29 drives the sliding block 28 and the spring 292 to move upward, after moving to the specified position, the second threaded frame 5 is rotated, the second threaded frame 5 extends to the inner part of the needle head body 3 through the positioning hole 4, so as to fix it, when the needle head body 3 is damaged, only the second threaded frame 5 is rotated, the sliding block 28 drives the magnetic plate 29 to move downward under the action of the sliding groove 291, so as to disassemble the needle head body 3, which has the advantages of good fixing effect and convenient taking out.

[0031] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

[0032] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to be used to limit the scope of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art to which this application belongs. The singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise.

Claims

1. A sewing machine needle bar for conveniently fixing the needle tip, characterized in that: Including needle rod body (1), fixed detachable assembly (2), needle body (3), positioning hole (4) and second threaded frame (5), the fixed detachable assembly (2) is arranged at the bottom of needle rod body (1), the second threaded frame (5) is arranged at the right side of fixed detachable assembly (2), the needle body (3) is arranged at the bottom of fixed detachable assembly (2), the positioning hole (4) is opened in the right side of needle body (3), the fixed detachable assembly (2) includes fixed column (21), first threaded frame (22), clamping groove (23), first through slot (24), positioning column (25), limiting groove (26), containing groove (27), sliding block (28), magnetic plate (29), sliding groove (291), spring (292), fixed groove (293) and fixed rod (294).

2. The needle bar of claim 1 wherein: The first through slot (24) is opened in the top of the fixed column (21), the limiting groove (26) is opened in the bottom of the needle rod body (1), and the positioning column (25) is arranged in the inner cavity of the limiting groove (26).

3. The needle bar of claim 1 wherein: The bottom of the positioning column (25) is fixedly connected with the bottom of the inner cavity of the first through slot (24), and the containing groove (27) is opened in the bottom of the fixed column (21).

4. The needle bar of claim 1 wherein: The inner part of the fixed column (21) and the two sides of the containing groove (27) are provided with sliding grooves (291), the sliding grooves (291) are slidably connected with sliding blocks (28) in the inner part, and the relatively close side of the sliding block (28) is fixedly installed with a magnetic plate (29).

5. The needle bar of claim 1 wherein: The inner cavity of the sliding groove (291) and the top of the sliding block (28) are fixedly installed with a spring (292), the fixed grooves (293) are opened on the two sides of the bottom of the needle rod body (1), and the fixed rod (294) slides in the inner cavity of the fixed groove (293).

6. The needle bar of claim 1 wherein: The relatively far side of the fixed rod (294) is fixedly connected with the inner cavity of the first through slot (24), the inner part of the positioning column (25) is provided with a clamping groove (23), and the first threaded frame (22) is rotatably connected with the back of the fixed column (21) by threads.

7. The needle bar of claim 1 wherein: The front surface of the first threaded frame (22) penetrates into the inner cavity of the limiting groove (26) and extends into the inner part of the positioning column (25) through the clamping groove (23), and the surface of the second threaded frame (5) is rotatably connected with the surface of the fixed column (21) by threads.

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