Sewing machine thread passing shaft

Abstract

The utility model provides a thread passing shaft of a sewing machine, which comprises a shaft body and shaft sleeves connected to two ends of the shaft body, and is characterized in that a hollow area is arranged in the center of the shaft body, and the shaft sleeves are respectively arranged at two ends of the shaft body and respectively connected with a gear part and a rotating shuttle part. The bottom thread of the sewing thread can penetrate through the shaft body through one end of the gear part to reach the rotating shuttle part. According to the thread passing shaft of the sewing machine, frequent replacement of bottom threads is avoided. A bottom thread can be directly led into the rotating shuttle from the outside, so that the time for winding the bottom thread is saved when a user uses the sewing machine to sew. And the working efficiency of the user is improved.

Description

Technical Field

[0001] The utility model relates to a mechanical device, in particular to a hollow thread-passing shaft of a sewing machine. Background Art

[0002] A sewing machine is a mechanical device used to sew fabrics. Under the existing technology, during the sewing process of the sewing machine, the sewing thread bobbin needs to be replaced at any time, and the bobbin needs to be wound around the bobbin by a bobbin winder. After the bobbin is wound around the bobbin, if the bobbin is wound unevenly, it needs to be adjusted continuously, and the whole process is time-consuming and laborious.

[0003] Therefore, how to provide a device that directly transmits the bottom thread to the rotary hook without the need for the bobbin to wind the bottom thread is a problem that those skilled in the art urgently need to solve. Utility Model Content

[0004] In view of this, the utility model provides a sewing machine thread spool to solve the technical problem of frequent replacement of the bottom thread during sewing work of the sewing machine, which is time-consuming and labor-intensive.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A sewing machine thread shaft comprises a shaft body and shaft sleeves connected to both ends of the shaft body, and is characterized in that a hollow area is arranged inside the center of the shaft body, shaft sleeves are arranged at both ends of the shaft body, the shaft sleeves at both ends are respectively connected to a gear part and a rotary hook part, and the sewing thread bottom line can pass through one end of the gear part through the shaft body to reach the rotary hook part.

[0007] Furthermore, the gear part is arranged at one end of the hollow shaft body and is connected corresponding to the center of the sleeve.

[0008] Furthermore, the shaft sleeves at both ends of the shaft body can wrap the shaft body accordingly, and the shaft sleeves are nested in correspondence with one end of the gear part and one end of the rotary hook part respectively.

[0009] Furthermore, the shaft body is hollow, and shaft sleeves are respectively embedded at both ends of the shaft body, and the centers of the two ends of the shaft body are connected to the gear part and the rotary hook part.

[0010] Furthermore, the center of the rotary shuttle part corresponds to one end of the connecting shaft, the bottom line of the sewing thread passes through the center of the rotary shuttle part, and then the bottom line is hooked into the corresponding slot. The inside of the rotary shuttle hooks the thread loop with its shuttle tip, while expanding the thread loop and guiding the thread loop to rotate.

[0011] It can be seen from the above technical solutions that, compared with the prior art, the utility model of a sewing machine thread spool avoids frequent replacement of the bottom thread. The bottom thread can be directly introduced into the rotary hook from the outside, which is convenient for users to save time on winding the bottom thread when using the sewing machine for sewing operations, thereby improving the work efficiency of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0013] Figure 1 This is a schematic diagram of the shaft structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the gear end structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the rotary hook end structure of the utility model;

[0016] In the figure: 1-shaft body, 2-shaft sleeve, 3-sewing thread bottom line, 4-gear part, 5-rotating hook part, 6-hook tip. DETAILED DESCRIPTION

[0017] 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.

[0018] The thread passing shaft of the sewing machine of the utility model comprises a gear transmission part 4, a hollow shaft part 1, and a rotary hook part 5 which are connected in sequence. One end of the hollow shaft part 1 is connected to the gear transmission part 4, and the other end is connected to the rotary hook part 5. The inside of the hollow shaft body 1 is in a hollow state. The inside of the hollow shaft body 1 is a passage for the sewing thread 3. Therefore, the sewing thread bottom line 3 directly passes through the inside of the shaft body 1 to the rotary hook part 5, avoiding the problem of frequent replacement of the bottom line in traditional sewing machines, and greatly improving the production efficiency.

[0019] The gear transmission part 4 is arranged at one end of the hollow shaft body 1, and the gear transmission part 4 provides motion and power transmission for the hollow shaft body 1.

[0020] The hollow shaft part 1 is hollow inside, which facilitates the sewing thread 3 to pass through the shaft. The hollow shaft is characterized by better transmission efficiency and performance when transmitting the same torque. The shaft part 1 is provided with sleeves 2 at both ends of the connecting gear part 4 and the rotating shuttle part 5 to protect the shaft. The sleeve 2 can wrap the shaft to prevent the surface of the shaft from being damaged by the environment and external objects. At the same time, when the gear part 4 and the rotating shuttle part 5 are connected at both ends of the shaft 1, the sleeve 2 can help the shaft 1 to position, prevent the shaft 1 from shaking in the hole, and thus reduce mechanical loss.

[0021] The rotary hook part 5 is connected to one end of the hollow shaft part 1, and the center of the rotary hook part 5 is docked with the hollow shaft body 1. The sewing thread bottom line 3 passes through the center of the rotary hook, and then the bottom line 3 is hooked into the corresponding slot, and about 15 cm of the bottom line is pulled out and placed directly behind.

[0022] When in use, the bottom thread 3 is passed through the gear part 4, into the hollow shaft body 1, and out from the center end of the rotary hook part 5. The user operates the sewing machine to sew up and down. When the sewing needle pierces the fabric, the sewing thread will leave a stitch on the fabric. While the sewing needle is moving, the rotary hook is also rotating. The rotary hook 5 hooks the thread loop with its shuttle tip 6, expands the thread loop, and guides the thread loop to go around a circle to form a lock stitch.

[0023] The utility model discloses a sewing machine thread passing shaft, which avoids frequent replacement of the bottom thread, can directly lead the bottom thread into the rotary hook from the outside, and is convenient for users to save time for winding the bottom thread when using the sewing machine for sewing operations, thereby improving the work efficiency of users.

[0024] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A thread passing shaft for a sewing machine, comprising a shaft body (1) and shaft sleeves (2) connected to both ends of the shaft body, characterized in that: A hollow area is arranged in the center of the shaft body (1), and shaft sleeves (2) are arranged at both ends of the shaft body (1). The shaft sleeves (2) at both ends are respectively connected to the gear part (4) and the rotary hook part (5), and the sewing thread bottom thread (3) can pass through one end of the gear part (4) through the interior of the shaft body (1) to reach the rotary hook part (5).

2. The sewing machine thread spool according to claim 1, characterized in that: The gear part (4) is arranged at one end of the hollow shaft body (1) and is connected corresponding to the center of the shaft sleeve (2).

3. The thread passing spool of a sewing machine according to claim 2, characterized in that: The shaft sleeves (2) at both ends of the shaft body (1) are capable of wrapping the shaft body (1) accordingly, and the shaft sleeves (2) are respectively nested and arranged corresponding to one end of the gear part (4) and one end of the rotary hook part (5).

4. The thread passing spool for a sewing machine according to claim 3, characterized in that: The shaft body (1) is hollow, and the two ends of the shaft body (1) are respectively embedded with shaft sleeves (2), and the centers of the two ends of the shaft body (1) are connected to the corresponding gear part (4) and the rotary hook part (5).

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