Handheld electric sewing machine

Abstract

The utility model relates to the technical field of sewing machines, and discloses a handheld electric sewing machine which comprises a shell, the front end of the shell is rotatably connected with a needle rod, the interior of the needle rod is fixedly connected with an installation ring, the interior of the installation ring is slidably connected with a rotating ring, and the interior of the installation ring is rotatably connected with a plurality of positioning columns. The outer portions of the multiple positioning columns are rotationally connected with fixing blocks correspondingly, the outer portions of the multiple fixing blocks are rotationally connected with first transmission rods correspondingly, a fixing assembly used for fixing is arranged in the rotating ring, a circuit board is fixedly connected to the interior of the shell, and a storage battery is fixedly connected to the outer portion of the circuit board. According to the utility model, the needle head can be quickly assembled and disassembled, the overall efficiency of sewing and the adaptability to various sewing scenes are obviously improved, and the actual requirements of modern manual sewing, daily sewing and other aspects on convenient operation are practically met.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, and in particular to a handheld electric sewing machine. Background Technology

[0002] To meet people's demand for more portable and flexible sewing machines, handheld electric sewing machines have been developed. While retaining the basic sewing functions of electric sewing machines, the overall structure has been miniaturized and lightweighted. The machine is small and lightweight, and users can easily operate it by hand. It is convenient to carry around, for example, it can be put in a handbag and taken to places such as craft classes or gatherings with friends to do sewing work anytime.

[0003] A handheld electric sewing machine mainly consists of a motor, sewing needle, needle bar, thread holder, and spool. The motor drives the sewing needle to pierce the fabric up and down frequently, while simultaneously moving the fabric forward quickly to efficiently complete the sewing task.

[0004] Some current handheld electric sewing machines cannot quickly change sewing needles to adapt to the needs of different sewing materials. They cannot quickly switch to the appropriate sewing needle according to the different sewing materials being used, which greatly affects the sewing efficiency of users. This is especially true when sewing projects that frequently involve different materials, such as sewing silk pajamas one moment and mending leather bags the next. This inability to quickly change sewing needles becomes even more prominent and causes a lot of inconvenience to users. Therefore, handheld electric sewing machines are proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a handheld electric sewing machine, which aims to improve the problem of the inability to quickly replace sewing needles in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A handheld electric sewing machine includes a housing. A needle bar is rotatably connected to the front end of the housing. A mounting ring is fixedly connected inside the needle bar. A rotating ring is slidably connected inside the mounting ring. Multiple positioning pins are rotatably connected inside the mounting ring. Fixing blocks are rotatably connected to the outside of each of the multiple positioning pins. A transmission rod is rotatably connected to the outside of each of the multiple fixing blocks. A fixing component for fixing is provided inside the rotating ring. A circuit board is fixedly connected inside the housing. A battery is fixedly connected to the outside of the circuit board. A TPC port is opened on the outside of the housing. An adjustment component for tension adjustment is provided on the outer side of the housing.

[0008] As a further description of the above technical solution:

[0009] The fixing component includes a sliding block 1, the outer side of which is slidably connected to the inside of the rotating ring, and the top end of the sliding block 1 is rotatably connected to a rotating block.

[0010] As a further description of the above technical solution:

[0011] The top end of the rotating ring is provided with a sliding groove, and the outside of the rotating block is slidably connected to the inside of the sliding groove.

[0012] As a further description of the above technical solution:

[0013] The mounting ring is slidably connected to a base, and a sewing needle is fixedly connected to the top of the base;

[0014] As a further description of the above technical solution:

[0015] A switch is slidably connected to the top of the housing, and a safety lock is slidably connected to the top of the housing.

[0016] As a further description of the above technical solution:

[0017] The adjustment assembly includes a second sliding block, which is slidably connected to the outside of the outer shell. An adjustment roller is rotatably connected to the end of the second sliding block away from the outer shell. A transmission rod is fixedly connected to the bottom end of the second sliding block, and a telescopic spring is fixedly connected to the bottom end of the transmission rod.

[0018] As a further description of the above technical solution:

[0019] A guide shell is fixedly connected to the outer side of the outer shell, and the other end of the telescopic spring is fixedly connected to the inside of the guide shell;

[0020] As a further description of the above technical solution:

[0021] A wire feeding reel is rotatably connected to the outer side of the housing, a push plate is rotatably connected to the front end of the housing, and a sliding groove is provided on the outer side of the housing.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by rotating the rotating ring, the fixing block can be fixed and loosened on the base, realizing quick installation and removal of the needle, which significantly improves the overall efficiency of sewing and adaptability to various sewing scenarios, and effectively meets the practical requirements of modern hand sewing and daily mending for convenient operation.

[0024] 2. In this utility model, the telescopic spring automatically slides inside the guide shell during the thread feeding process, thereby adaptively adjusting the tension. This ensures that the thread maintains a suitable tightness when passing through fabrics of different thicknesses and textures, resulting in more uniform, beautiful, and strong sewing stitches. This greatly improves the stability of the sewing effect and provides users with a better and more convenient sewing experience. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the handheld electric sewing machine proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the needle bar structure of the handheld electric sewing machine proposed in this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the safety lock of the handheld electric sewing machine proposed in this utility model;

[0029] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0030] Legend:

[0031] 1. Outer shell; 2. Needle bar; 3. Mounting ring; 4. Positioning pin; 5. Fixing block; 6. Transmission rod one; 7. Rotating ring; 8. Sliding block one; 9. Rotating block; 10. Slide groove one; 11. Sewing needle; 12. Base; 13. Sliding block two; 14. Adjusting roller; 15. Transmission rod two; 16. Telescopic spring; 17. Guide shell; 18. Slide groove two; 19. Thread feeder; 20. Circuit board; 21. Battery; 22. TPC port; 23. Switch; 24. Safety lock; 25. Button. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1 to 3This utility model provides an embodiment of a handheld electric sewing machine, which is a sewing tool that can meet various sewing needs and is relatively easy to operate. It includes a shell 1, which serves as the external protective structure of the entire sewing machine and can effectively prevent internal components from being interfered with by external factors, such as preventing dust from entering and affecting the normal operation of various components. It is made of a sturdy and lightweight material. A needle bar 2 is rotatably connected to the front end of the shell 1. The needle bar 2 is a key component that drives the sewing needle to move up and down. It cooperates with the internal transmission structure so that the sewing needle can pierce the fabric according to a certain rhythm and trajectory. An installation ring 3 is fixedly connected inside the needle bar 2. The installation ring 3 plays the role of supporting and positioning other related components. It provides a relatively stable basic structure for the installation and movement of subsequent components. A rotating ring 7 is slidably connected inside the installation ring 3. The rotating ring 7 plays an important role in the entire sewing needle replacement and some related operations. It can achieve operations such as fixing or loosening the sewing needle through specific movement.

[0034] The mounting ring 3 has multiple rotatable positioning posts 4 inside, which provide rotational fulcrums for the connected components, ensuring that the relevant components rotate stably around them. Each of the multiple positioning posts 4 is rotatably connected to a fixing block 5, which is a key component directly involved in fixing the sewing needle. Each of the multiple fixing blocks 5 is rotatably connected to a transmission rod 6, which transmits power to cause the fixing blocks 5 to rotate accordingly. The rotating ring 7 has a fixing component inside for securing the device. The outer casing 1 has a circuit board 20 fixedly connected inside, which controls the working status of each electrical component and coordinates the cooperation between them. The circuit board 20 has a battery 21 fixedly connected outside, providing the necessary power source for the normal operation of the sewing machine, ensuring that the sewing machine can continue to work for a period of time without an external power source.

[0035] The outer casing 1 has a TPC port 22, which facilitates the connection of the sewing machine with external devices, such as for charging or data transmission. The outer casing 1 also has a tension adjustment component, including a sliding block 8. The outer side of the sliding block 8 is slidably connected to the inside of the rotating ring 7. A rotating block 9 is rotatably connected to the top of the sliding block 8, and the outer side of the rotating block 9 is slidably connected to the inside of the slide groove 10. A base 12 is slidably connected inside the mounting ring 3, and a sewing needle 11 is fixedly connected to the top of the base 12. The sewing needle 11 is the core component that directly acts on the fabric for threading. It comes in various specifications and types, allowing for selection of appropriate needles based on different fabric materials and sewing techniques. A switch 23 is slidably connected to the top of the casing 1, controlling the start and stop of the sewing machine. The switch 23 is simple and convenient to operate. A safety lock 24 is slidably connected to the top of the casing 1, further ensuring the safety of the sewing machine during use and preventing accidental operation.

[0036] Reference Figure 1 , Figure 4 and Figure 5 The adjustment component includes a second sliding block 13, which is slidably connected to the outside of the outer shell 1. The second sliding block 13 can slide smoothly on the outside of the outer shell 1 to drive the connected components to perform corresponding actions. An adjustment roller 14 is rotatably connected to the end of the second sliding block 13 away from the outer shell 1. The adjustment roller 14 can change the direction of the stitch and apply a certain force to the stitch, thus participating in the tension adjustment process. A transmission rod 15 is fixedly connected to the bottom end of the second sliding block 13. The transmission rod 15 plays the role of transmitting force and can transmit the relevant force to other components. A telescopic spring 16 is fixedly connected to the bottom end of the transmission rod 15. The telescopic spring 16 has the characteristic of elastic extension and contraction and can change its own length according to the force.

[0037] A guide shell 17 is fixedly connected to the outer side of the outer shell 1. The guide shell 17 can provide a guiding function for the movement of the telescopic spring 16 and other related components, ensuring that they move in a predetermined direction. The other end of the telescopic spring 16 is fixedly connected to the inside of the guide shell 17. A thread feeding tray 19 is rotatably connected to the outer side of the outer shell 1. The thread feeding tray 19 is a component that stores the sewing thread and continuously feeds the thread during the sewing process. The smoothness of its rotation and the stability of the thread feeding will affect the sewing effect. A button plate 25 is rotatably connected to the front end of the outer shell 1. The button plate 25 may have a corresponding function in certain specific operations. A second slide groove 18 is opened on the outer side of the outer shell 1. The second slide groove 18 provides a track for the sliding block 13, so that the sliding block 13 can slide smoothly within its limited range.

[0038] Working Principle: When using the handheld sewing machine, different sewing needles (11) can be replaced to adapt to different sewing needs when dealing with different materials. By rotating the rotating block (9), it slides out of the groove (10), and then the sliding block (8) slides into the groove (10). At this time, by rotating the rotating ring (7), the fixing block (5) slides from the top of the base (12) into the mounting ring (3), thus removing the fixation of the sewing needle (11). The replaced base (12) can then be slid into the mounting ring (3). By rotating the rotating ring (7), the transmission rod (6) presses against the fixing block (5), causing the fixing block (5) to rotate along the positioning post (4) and slide to the top of the base (12). Then, the sliding block (8) slides out of the groove (10), and the rotating block (9) slides into the groove (10), thus fixing the position again. By quickly replacing the sewing needle (11), different sewing needs can be met, improving the convenience and efficiency of sewing operations.

[0039] When using a handheld sewing machine, the thread feeder 19 will experience tension fluctuations during thread feeding. If not adjusted, this will affect sewing accuracy and processing efficiency. By rotating the thread outside the adjusting roller 14, when tension fluctuations occur, the telescopic spring 16 will push the sliding block 13 to slide inside the groove 18, thereby adaptively adjusting the tension and ensuring that the thread maintains appropriate tension when passing through thicker fabrics, thus guaranteeing sewing quality.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A handheld electric sewing machine, comprising a housing (1), characterized in that: The front end of the outer shell (1) is rotatably connected to a needle bar (2). The needle bar (2) is fixedly connected to an installation ring (3). The installation ring (3) is slidably connected to a rotating ring (7). The installation ring (3) is rotatably connected to multiple positioning pins (4). The multiple positioning pins (4) are rotatably connected to a fixing block (5). The multiple fixing blocks (5) are rotatably connected to a transmission rod (6). The rotating ring (7) is provided with a fixing component for fixing. The outer shell (1) is fixedly connected to a circuit board (20). The circuit board (20) is fixedly connected to a battery (21). The outer shell (1) is provided with a TPC port (22). The outer shell (1) is provided with an adjustment component for tension adjustment.

2. The handheld electric sewing machine according to claim 1, characterized in that: The fixing component includes a sliding block (8), the outside of which is slidably connected to the inside of the rotating ring (7), and the top of the sliding block (8) is rotatably connected to a rotating block (9).

3. The handheld electric sewing machine according to claim 2, characterized in that: The top of the rotating ring (7) is provided with a sliding groove (10), and the outside of the rotating block (9) is slidably connected to the inside of the sliding groove (10).

4. The handheld electric sewing machine according to claim 1, characterized in that: The mounting ring (3) is slidably connected to a base (12), and a sewing needle (11) is fixedly connected to the top of the base (12).

5. The handheld electric sewing machine according to claim 1, characterized in that: A switch (23) is slidably connected to the top of the housing (1), and a safety lock (24) is slidably connected to the top of the housing (1).

6. The handheld electric sewing machine according to claim 1, characterized in that: The adjustment assembly includes a second sliding block (13), which is slidably connected to the outside of the outer shell (1). An adjustment roller (14) is rotatably connected to one end of the second sliding block (13) away from the outer shell (1). A transmission rod (15) is fixedly connected to the bottom end of the second sliding block (13), and a telescopic spring (16) is fixedly connected to the bottom end of the transmission rod (15).

7. The handheld electric sewing machine according to claim 6, characterized in that: A guide shell (17) is fixedly connected to the outer side of the outer shell (1), and the other end of the telescopic spring (16) is fixedly connected to the inside of the guide shell (17).

8. The handheld electric sewing machine according to claim 1, characterized in that: The outer side of the outer shell (1) is rotatably connected to a wire feeding reel (19), the front end of the outer shell (1) is rotatably connected to a pressing plate (25), and a sliding groove (18) is provided on the outer side of the outer shell (1).

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