Bobbin case structure
By arranging a thread-blocking protrusion structure on the shuttle body, the problem of loose and disorderly sutures on the back of the shuttle inside the rotary hook is solved, the orderly sliding of the sutures is achieved, the thread is prevented from being stuck and broken, and the sewing efficiency and effect are improved.
Patent Information
- Application Number
- CN202421653603.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The suture becomes loose on the back of the hook, causing the suture to be disordered and easily brought into the track, causing the thread to jam and break, affecting sewing efficiency and effect.
A thread-blocking protrusion structure higher than the end surface of the shuttle body is provided on the shuttle body. The thread-blocking protrusion structure extends out from the back of the shuttle in the rotary hook to form a barrier to prevent the suture from loosening and disordering, thereby ensuring smooth sliding of the suture.
It effectively prevents the sewing thread from becoming loose and disordered on the back of the hook, avoids thread jamming and breakage, and improves sewing efficiency and effect.
Smart Images
Figure CN223397899U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewing equipment, in particular to a bobbin case structure. Background Art
[0002] During the mechanical sewing process, in an automatic thread trimming sewing machine, after sewing at the start of stitching, the thread will be hooked by the hook thread hook part and brought into the back of the hook inner shuttle. Since the back of the hook inner shuttle is a flat and smooth structure, the thread will become loose on the back of the hook inner shuttle, making the thread in a disordered state. The thread is easily brought into the track, which is prone to thread jamming and breakage, thereby affecting the sewing efficiency and sewing effect. Summary of the Invention
[0003] In response to the shortcomings of the existing technology, the utility model provides a shuttle housing structure, which can effectively prevent the suture thread from becoming loose on the back of the shuttle inside the rotary hook, avoid the suture thread from becoming disordered, and effectively prevent the suture thread from being brought into the track, causing the thread to be stuck and broken, thereby ensuring sewing efficiency and sewing effect.
[0004] The technical solution is as follows: the shuttle housing is provided with a thread-blocking protrusion structure higher than the end surface of the shuttle housing; after the shuttle housing is installed in the rotary hook, the thread-blocking protrusion structure protrudes from the back of the inner hook of the rotary hook.
[0005] It is further characterized in that: a bobbin case structure includes a bobbin case body, characterized in that: one side of the thread-blocking protrusion structure is a suture contact surface, and the suture contact surface is inclined; the suture contact surface is a thread-blocking surface, and the thread-blocking surface and the end surface of the bobbin case body form an obtuse-angle transition section; the bobbin case body is provided with a plurality of thread-blocking protrusion structures higher than the end surface of the bobbin case body; the thread-blocking protrusion structure is provided at the distal end where the suture passes.
[0006] The utility model adopts the above-mentioned solution. Since the shuttle body is provided with a thread-blocking protrusion, when the shuttle body is installed on the rotary hook, the thread-blocking protrusion will extend out of the back of the inner shuttle of the rotary hook to form a thread-blocking protrusion. When the suture passes through the back of the inner shuttle of the rotary hook, the thread-blocking protrusion will block the suture to a certain extent, effectively preventing the suture from becoming loose on the back of the inner shuttle of the rotary hook, avoiding the suture from becoming disordered, and effectively preventing the suture from being brought into the track, causing the thread to be stuck and broken, thereby ensuring sewing efficiency and sewing effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a schematic diagram of the three-dimensional structure of the inner hook of the rotary hook of the utility model. DETAILED DESCRIPTION
[0008] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0009] See Figure 1A bobbin case structure includes a bobbin case 1. The bobbin case 1 is provided with a thread-blocking protrusion structure 2 which is higher than the end surface of the bobbin case. The bobbin case is provided with a thread-blocking protrusion structure. When the bobbin case is installed on the rotary hook, the thread-blocking protrusion structure will extend out of the back of the inner shuttle of the rotary hook to form a thread-blocking protrusion structure. When the suture passes through the back of the inner shuttle of the rotary hook, the thread-blocking protrusion structure will block the suture to a certain extent, effectively preventing the suture from becoming loose on the back of the inner shuttle of the rotary hook, avoiding the suture from becoming disordered, and effectively preventing the suture from being brought into the track, causing thread jamming and breakage, thereby ensuring sewing efficiency and sewing effect.
[0010] One side of the thread-blocking protrusion structure 2 is a suture contact surface 3, which is inclined, so that the thread-blocking protrusion produces a certain resistance to the thread, thereby blocking the thread and preventing the thread from loosening. At the same time, it also ensures the effective sliding of the suture on the back of the shuttle inner hook, thereby achieving effective sewing.
[0011] The thread contact surface 2 is a thread blocking surface, and the thread blocking surface 3 and the shuttle body end surface 4 form an obtuse-angle transition section, so that the thread can smoothly escape from the thread blocking surface after passing through the thread blocking surface.
[0012] Preferably, the thread-blocking protrusion structure 2 is set at the distal end where the suture passes. The suture produced at the distal end where the suture passes is longer and the suture is easier to loosen. The thread-blocking protrusion is set at the distal end where the suture passes, so that the thread-blocking protrusion has a better thread-blocking effect. Of course, the thread-blocking protrusion can also be set on both sides of the bobbin case.
[0013] Preferably, the suture contact surface, i.e., the suture retaining surface, is arc-shaped, so that the suture can be removed more smoothly.
[0014] The height of the thread blocking protrusion can be designed according to actual conditions. While ensuring the thread blocking effect, it is also necessary to ensure that the suture thread effectively slides on the back of the inner hook of the rotary hook to achieve effective sewing.
[0015] A plurality of line-blocking protrusions can be provided.
[0016] The above schematically describes the present invention and its implementation methods. This description is not restrictive. What is shown in the accompanying drawings is only one of the implementation methods of the present invention. The actual structure is not limited to this. Ordinary technicians in this field can be inspired by it and, without departing from the purpose of this invention, creatively design structural methods and embodiments similar to the technical solution. They should all fall within the scope of protection of the present invention.
Claims
1. A bobbin case structure, comprising a bobbin case (1), characterized in that: The shuttle housing (1) is provided with a thread-blocking protruding structure (2) which is higher than the shuttle housing end surface (4). After the shuttle housing is installed in the rotary hook, the thread-blocking protruding structure (2) protrudes from the back of the inner shuttle of the rotary hook. One side of the thread-blocking protruding structure (2) is a suture contact surface (3). The suture contact surface (3) is inclined. The suture contact surface (3) is a thread-blocking surface (3). The thread-blocking surface (3) and the shuttle housing end surface (4) form an obtuse-angle transition section.
2. A bobbin case structure according to claim 1, characterized in that: The shuttle housing (1) is provided with a plurality of wire-blocking protrusion structures (2) that are higher than the shuttle housing end surface (4).
3. A bobbin case structure according to claim 1 or 2, characterized in that: The thread-blocking protrusion structure (2) is arranged at the distal end through which the suture passes.