Damping structure of rotating shuttle frame
By designing O-grooves on the shuttle frame shaft and engaging O-rings, the problems of shaking and noise during operation of the rotary shuttle frame are solved, improving the stability of the rotary shuttle and reducing noise.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO YITEHE PRECISION MACHINERY CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-05-19
AI Technical Summary
The existing rotary shuttle frame sways and vibrates during operation, resulting in noise and insufficient stability.
An O-groove is designed on the shuttle shaft core, and an O-ring is fitted inside the groove to form a shock-absorbing component, ensuring stable installation of the shuttle core and reducing shaking and noise.
This achieves stable installation of the shuttle core, reduces shaking and noise during shuttle operation, and improves the working stability of the shuttle.
Smart Images

Figure CN224258968U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of rotary shuttle frame technology, specifically relating to a shock-absorbing structure for a rotary shuttle frame. Background Technology
[0002] A sewing machine is a machine that uses one or more sewing threads to create one or more stitches on fabric, allowing one or more layers of fabric to interweave or sew together. The rotary hook is an essential component in woven sewing; its function is to hook the top thread on the needle and interweave it with the thread inside the bobbin, thus forming a stitch. The rotary hook includes a shuttle bed, inside which is a rotating shuttle frame; the shuttle frame holds the bobbin, used for winding and storing the sewing thread.
[0003] The existing shuttle core, after being installed on the shuttle frame, generally has poor stability. As the rotary shuttle operates, it may wobble and vibrate, and generate noise. Therefore, this utility model designs a shock-absorbing structure for the rotary shuttle frame. Utility Model Content
[0004] The purpose of this invention is to provide a shock-absorbing structure for a rotary shuttle frame to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a shock-absorbing structure for a rotary shuttle frame, comprising a shuttle frame body, including a shuttle frame body that is rotatably limited and disposed inside the shuttle bed, a shuttle frame shaft core for mounting the shuttle core is disposed at the inner center of the shuttle frame body, and a rubber shock-absorbing component for shock absorption is sleeved on the shuttle frame shaft core.
[0006] Preferably, the rubber damping assembly includes an annular O-groove formed on the shuttle shaft core, and an O-ring rubber ring that engages within the O-groove.
[0007] Preferably, the size of the O-ring matches the size of the O-groove.
[0008] Preferably, the shuttle frame body and the shuttle frame shaft are integrally formed as a single structure.
[0009] Preferably, the outer surface of the shuttle frame body is provided with an arc-shaped protruding guide rail for assisting the shuttle frame body to limit rotation within the shuttle bed.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] By designing an O-groove on the shuttle frame shaft and engaging a shock-absorbing rubber ring within the O-groove, the shuttle core can be stably mounted on the shuttle frame shaft without wobbling. This provides shock absorption and noise reduction during the entire shuttle rotation process. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the entire rotary hook assembly state of this utility model;
[0013] Figure 2 This is a schematic diagram of the shuttle frame structure of this utility model;
[0014] Figure 3 This is a schematic diagram of the structure of the shuttle frame body and the rubber ring in the separated state of this utility model;
[0015] In the diagram: 1. Shuttle frame body; 2. Shuttle bed; 3. Shuttle frame shaft; 4. O-ring; 5. O-groove. Detailed Implementation
[0016] 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.
[0017] Example 1
[0018] Please see Figures 1 to 3 This utility model provides a technical solution: a shock-absorbing structure for a rotary shuttle frame, including a shuttle frame body 1, which is rotatably limited and disposed inside a shuttle bed 2. A shuttle frame shaft core 3 for mounting the bobbin is disposed at the inner center of the shuttle frame body 1. A rubber shock-absorbing component for shock absorption is sleeved on the shuttle frame shaft core 3. In this embodiment, preferably, the rubber shock-absorbing component includes an annular O-groove 5 formed on the shuttle frame shaft core 3, and an O-ring rubber ring 4 that engages within the O-groove 5. By engaging the rubber ring 4 on the shuttle frame shaft core 3, the bobbin can be stably mounted on the shuttle frame shaft core 3 without shaking, thus achieving shock absorption and noise reduction during the entire rotary shuttle operation. In this embodiment, preferably, the size of the O-ring rubber ring 4 matches the size of the O-groove 5. This ensures that the O-ring rubber ring 4 can be stably engaged within the O-groove 5 and stably mounted on the shuttle frame shaft core 3, preventing easy loosening. In this embodiment, preferably, the shuttle frame body 1 and the shuttle frame shaft core 3 are integrally formed, which can ensure the overall stability of the structure. In this embodiment, preferably, the outer surface of the shuttle frame body 1 is provided with an arc-shaped protruding guide rail for assisting the shuttle frame body 1 in limiting its rotation within the shuttle bed 2.
[0019] Although embodiments of the present invention have been shown and described in detail above, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A shock-absorbing structure for a rotary shuttle frame, comprising a shuttle frame body (1), including a shuttle frame body (1) rotatably positioned inside a shuttle bed (2), characterized in that: The inner center of the shuttle frame body (1) is provided with a shuttle frame shaft core (3) for installing the shuttle core, and a rubber shock-absorbing component for shock absorption is sleeved on the shuttle frame shaft core (3).
2. The shock-absorbing structure for a rotary shuttle frame according to claim 1, characterized in that: The rubber damping assembly includes an annular O-groove (5) formed on the shuttle shaft core (3) and an O-ring (4) that engages with the O-groove (5).
3. The shock-absorbing structure for a rotary shuttle frame according to claim 2, characterized in that: The dimensions of the O-ring (4) are matched with the dimensions of the O-groove (5).
4. The shock-absorbing structure for a rotary shuttle frame according to claim 1, characterized in that: The main body (1) of the shuttle frame and the shuttle frame shaft (3) are integrally formed into a single structure.
5. The shock-absorbing structure for a rotary shuttle frame according to claim 1, characterized in that: The outer surface of the shuttle body (1) is provided with an arc-shaped protruding guide rail for assisting the shuttle body (1) in limiting its rotation within the shuttle bed (2).