Handheld sewing machine capable of using various bobbins

Abstract

The handheld sewing machine comprises a sewing machine body and a thread spool installation mechanism arranged at the front end of the sewing machine body, the thread spool installation mechanism comprises a bottom plate, two telescopic rods and a limiting assembly, the bottom plate is arranged above the front end of the sewing machine body in the horizontal direction, the two telescopic rods are arranged on the bottom plate, and the limiting assembly is arranged on the bottom plate. The bottom of the bottom plate is rotatably connected with the sewing machine body through a rotating shaft, the two telescopic rods are longitudinally arranged above the bottom plate at intervals, the limiting assembly is arranged on one side of the front end of the sewing machine body and located at the bottom of the bottom plate, the two ends of the bottom plate are each provided with a limiting hole in the diagonal direction, and the limiting assembly is movably connected with the limiting holes. According to the handheld sewing machine, due to the arrangement of the bottom plate, the telescopic rod and the limiting assembly, bobbins of different types can be replaced according to needs, the universality of the sewing machine is improved, the handheld sewing machine is flexible and convenient to use, and the equipment input cost of enterprises is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing tools, in particular to a handheld sewing machine capable of using a variety of thread shafts. Background Art

[0002] During the production and processing of leather shoes, cloth shoes, sports shoes and other shoes, sewing machines are needed to sew the hem lines between the upper and the sole, the splicing lines between the cloth or leather, etc. Most of the sewing processes are completed by large sewing machines, but large sewing machines cannot be used for the corners of the shoes or the positions that need to be repaired due to leaks, and usually handheld sewing machines are needed to complete them.

[0003] Since different footwear uses wires of different thicknesses, the forms of the spools for winding the wires are also different. Common shapes include cylindrical, conical, shuttle and I-shaped. Different spools have different thicknesses and lengths. Existing handheld sewing machines can usually only adapt to a certain form of spool. When a different spool is needed, the matching handheld sewing machine needs to be replaced. On the one hand, it is not flexible and convenient to use, and the operator needs to frequently replace different handheld sewing machines. On the other hand, it is necessary to prepare various models of handheld sewing machines, which adds unnecessary cost expenditure to the enterprise.

[0004] In summary, the structure of the existing handheld sewing machine still needs to be improved. Utility Model Content

[0005] To solve the above problems, the utility model provides a handheld sewing machine that can use a variety of spools, including a sewing machine body and a spool mounting mechanism arranged at the front end of the sewing machine body, the spool mounting mechanism including a base plate, two telescopic rods and a limit assembly, the base plate is arranged above the front end of the sewing machine body in a horizontal direction, and the bottom is rotatably connected to the sewing machine body through a rotating shaft, the two telescopic rods are arranged above the base plate at intervals in the longitudinal direction, the limit assembly is arranged on one side of the front end of the sewing machine body and is located at the bottom of the base plate, and a limit hole is respectively provided at both ends of the base plate along the diagonal direction, and the limit assembly is movably connected to the limit hole.

[0006] Furthermore, a detachable positioning block is provided on the top of the telescopic rod.

[0007] Furthermore, a conical groove is provided inside the telescopic rod, a conical rod is provided at the bottom of the positioning block, and the conical rod is arranged in the conical groove.

[0008] Furthermore, a threaded groove is provided inside the telescopic rod, a threaded rod is provided at the bottom of the positioning block, and the threaded rod is arranged in the threaded groove.

[0009] Furthermore, the limiting assembly includes a limiting groove, an arc-shaped limiting block and a limiting spring. The limiting groove is connected to the side wall of the sewing machine body and is located below the bottom plate. The arc-shaped limiting block can be movably arranged in the limiting groove up and down, and the limiting spring is arranged between the arc-shaped limiting block and the bottom of the limiting groove.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The handheld sewing machine of the utility model can replace different types of thread shafts according to needs through the arrangement of the bottom plate, the telescopic rod and the limit assembly, thereby improving the versatility of the sewing machine, making it flexible and convenient to use, and reducing the equipment investment cost of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a side view of the local structure of the utility model;

[0014] Figure 3 for Figure 2 A is a schematic diagram of the structure of one of the implementation methods;

[0015] Figure 4 for Figure 2 A is a schematic structural diagram of another implementation method;

[0016] Figure 5 for Figure 2 A partial cross-sectional view at point B in the middle;

[0017] Figure 6 A diagram showing the use of a tapered spool installed in the utility model;

[0018] Figure 7 A diagram showing the use of a cylindrical spool installed in the utility model;

[0019] Figure 8 This is a diagram of the use state of installing the I-shaped spool of the utility model.

[0020] In the figure:

[0021] 1-sewing machine body, 2-bottom plate, 3-telescopic rod, 31-conical groove, 32-thread groove, 4-rotating shaft, 5-positioning block, 51-conical rod, 52-thread rod, 6-limiting hole, 7-limiting groove, 8-arc-shaped limiting block, 9-limiting spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-2 As shown, the handheld sewing machine that can use multiple spools in this embodiment includes a sewing machine body 1 and a spool mounting mechanism arranged at the front end of the sewing machine body 1, the spool mounting mechanism includes a base plate 2, two telescopic rods 3 and a limiting assembly, the base plate 2 is arranged above the front end of the sewing machine body 1 in the horizontal direction, and the bottom is rotatably connected to the sewing machine body 1 through a rotating shaft 4, the two telescopic rods 3 are arranged above the base plate 2 along the longitudinal interval, and a detachable positioning block 5 is provided on the top of the telescopic rod 3; the limiting assembly is arranged on one side of the front end of the sewing machine body 1 and is located at the bottom of the base plate 2, and a limiting hole 6 is respectively provided at both ends of the base plate 2 along the diagonal direction, and the limiting assembly is movably connected to the limiting hole 6.

[0024] Among them, the sewing machine body 1 adopts a mature handheld sewing machine on the market, whose structure and principle are well known to technical personnel in this field, and this application does not involve improvements to the sewing machine body 1, so it will not be repeated here.

[0025] The telescopic rod 3 can be extended and retracted according to the size of the spool, and has a certain damping, and can stay at any height. The top is limited by a positioning block 5 to the spool mounted on the outside of the telescopic rod 3 to prevent the spool from jumping during use; the purpose of setting two telescopic rods 3 is to install two spools at the same time. When one spool is in use, the other one is spare and can be switched flexibly.

[0026] like Figure 3 As shown, in one embodiment, a conical groove 31 is provided inside the telescopic rod 3, and a conical rod 51 is provided at the bottom of the positioning block 5. The conical rod 51 is arranged in the conical groove 31, and the connection between the conical rod 51 and the conical groove 31 is achieved by friction and extrusion of the inclined surface between the conical rod 51 and the conical groove 31.

[0027] like Figure 4 As shown, in another embodiment, a threaded groove 32 is provided inside the telescopic rod 3, and a threaded rod 52 is provided at the bottom of the positioning block 5. The threaded rod 52 is arranged in the threaded groove 32, and the two are connected to the positioning block 5 and the telescopic rod 3 by bolts.

[0028] like Figure 5As shown, the limiting assembly includes a limiting groove 7, an arc-shaped limiting block 8 and a limiting spring 9. The limiting groove 7 is connected to the side wall of the sewing machine body 1 and is located below the base plate 2. The arc-shaped limiting block 8 can be movably arranged in the limiting groove 7 up and down, and the limiting spring 9 is arranged between the arc-shaped limiting block 8 and the bottom of the limiting groove 7.

[0029] Under the elastic force of the limit spring 9, the top arc surface part of the arc limit block 8 is restricted in the limit hole 6, thereby keeping the position of the base plate 2 stable; when replacing the spool, the arc limit block 8 can be disengaged from the limit hole 6 by slightly rotating the base plate 2, and then the base plate 2 is continued to be rotated 180° to make the arc limit block 8 enter another limit hole 6, thereby realizing the positioning of the base plate 2.

[0030] like Figure 6-8 As shown, by adjusting the length of the telescopic rod 3, it can adapt to various specifications of spools, including but not limited to conical, cylindrical, and I-shaped, which effectively improves the versatility of the sewing machine, makes it flexible and convenient to use, and reduces the equipment investment cost of the enterprise.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A handheld sewing machine capable of using a variety of thread spools, characterized in that: The utility model comprises a sewing machine body and a spool installation mechanism arranged at the front end of the sewing machine body, wherein the spool installation mechanism comprises a base plate, two telescopic rods and a limit assembly, wherein the base plate is arranged above the front end of the sewing machine body in a horizontal direction, and the bottom is rotatably connected with the sewing machine body through a rotating shaft, and the two telescopic rods are arranged above the base plate at intervals in the longitudinal direction, and the limit assembly is arranged at one side of the front end of the sewing machine body and at the bottom of the base plate, and a limit hole is respectively arranged at two ends of the base plate in a diagonal direction, and the limit assembly is movably connected with the limit hole.

2. The handheld sewing machine capable of using multiple thread spools according to claim 1, characterized in that: A detachable positioning block is arranged on the top of the telescopic rod.

3. The handheld sewing machine capable of using multiple thread reels according to claim 2, characterized in that: A conical groove is arranged inside the telescopic rod, a conical rod is arranged at the bottom of the positioning block, and the conical rod is arranged in the conical groove.

4. The handheld sewing machine capable of using multiple thread reels according to claim 2, characterized in that: A thread groove is arranged inside the telescopic rod, a thread rod is arranged at the bottom of the positioning block, and the thread rod is arranged in the thread groove.

5. The handheld sewing machine capable of using multiple thread reels according to any one of claims 1 to 4, characterized in that: The limiting assembly includes a limiting groove, an arc-shaped limiting block and a limiting spring. The limiting groove is connected to the side wall of the sewing machine body and is located below the bottom plate. The arc-shaped limiting block can be movably arranged in the limiting groove up and down. The limiting spring is arranged between the arc-shaped limiting block and the bottom of the limiting groove.

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