Thread stand structure of sewing machine

Abstract

The utility model discloses a thread stand structure of a sewing machine, which relates to the field of sewing machines, and comprises a support rod and a base assembly arranged at the bottom of the support rod, a plurality of cross rods are arranged on the support rod, the cross rods comprise lower cross rods positioned at the lower part and upper cross rods positioned at the upper part, and the base assembly comprises a bottom pipe and a thread stand, the base and the bottom of the supporting rod are installed in an inserted mode and are in interference fit; the mounting nut is mounted at the lower end of the bottom pipe in a threaded fit manner; the bottom end of the supporting rod is provided with a contracted pipe part with the outer diameter reduced, the bottom pipe comprises an installation part matched with the contracted pipe part and a main body part with the inner diameter smaller than that of the contracted pipe part, and a first limiting step making contact with the end of the bottom pipe is formed at the upper end of the contracted pipe part of the supporting rod. A second limiting step making contact with the bottom end of the contracted pipe part is formed between the main body part and the installation part, and an annular plate used for installation and positioning is arranged on the bottom pipe. The utility model has the advantages of simple structure, convenience in processing and good stability.

Description

Technical Field

[0001] This utility model relates to the field of sewing machines, specifically to a sewing machine thread frame structure. Background Technology

[0002] Traditional sewing machines use a single iron pipe as the support rod for the thread frame structure. The support rod requires processes such as pickling and powder coating, making the manufacturing process very complicated. Moreover, multiple tools are needed to work together during installation, and the screws are exposed after installation, making them prone to snagging the thread. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a sewing machine thread frame structure that is simple in structure, easy to process, and has good stability.

[0004] The technical solution adopted by this utility model is as follows: a sewing machine thread frame structure, including a support rod and a base assembly disposed at the bottom of the support rod. Several crossbars are installed on the support rod, including a lower crossbar located at the bottom and an upper crossbar located at the top. The base assembly includes:

[0005] The bottom tube is inserted into and interference-fitted with the bottom of the support rod;

[0006] The mounting nut, which is threadedly fitted, is installed at the lower end of the bottom tube;

[0007] The bottom end of the support rod is provided with a reduced outer diameter tube section. The bottom tube includes an installation section adapted to the reduced tube section and a main body section with an inner diameter smaller than the reduced tube section. The support rod forms a first limiting step at the upper end of the reduced tube section that contacts the end of the bottom tube. A second limiting step is formed between the main body section and the installation section that contacts the bottom end of the reduced tube section. The bottom tube is provided with an annular plate for installation and positioning.

[0008] Both the support rod and the bottom tube are made of stainless steel.

[0009] The bottom tube is fitted with a decorative sleeve for covering.

[0010] The support rod is hollow and has inwardly rolled edges at both ends.

[0011] The support rods consist of two rods, each with a connecting sleeve for fixed connection. The connecting sleeve is C-shaped and has a positioning step on its inner wall. The connecting sleeve, lower crossbar, and upper crossbar have several countersunk holes for fastener installation. The connecting sleeve, lower crossbar, and upper crossbar have rounded corners.

[0012] The lower crossbar is provided with a number of wire reels and mounting holes for mounting the wire reels. The bottom end of the wire reel is elastically engaged with the mounting hole.

[0013] The inner wall of the mounting hole is provided with several limiting grooves, and one end of the coil inserted into the mounting hole is provided with a limiting rib that matches the limiting groove.

[0014] The upper crossbar is equipped with a wire-passing ceramic.

[0015] The beneficial effects of this utility model are: the support rod of this technical solution is processed by physical tube shrinking and then pressed with the bottom tube to achieve a stable connection between the support rod and the bottom tube. When the shrinking part of the support rod is inserted into the bottom tube, the first limiting step and the second limiting step respectively limit the installation position of the two. In addition, tool-free installation is achieved by installing nuts. It has the advantages of simple structure, convenient processing and good stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the thread frame structure of the sewing machine according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the support rod.

[0018] Figure 3 This is a cross-sectional view of the base assembly.

[0019] Figure 4 This is a schematic diagram of the coil structure.

[0020] Figure 5 This is a schematic diagram of the lower crossbar.

[0021] Figure 6 This is a schematic diagram of the bottom tube structure.

[0022] Figure 7 This is a schematic diagram of the connecting sleeve. Detailed Implementation

[0023] The embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0024] As shown in the figure, a sewing machine thread frame structure includes a support rod 1 and a base assembly disposed at the bottom of the support rod 1. Several crossbars are mounted on the support rod 1, including a lower crossbar 2 located at the bottom and an upper crossbar 3 located at the top. The base assembly includes:

[0025] The bottom tube 4 is inserted into and interference-fitted with the bottom of the support rod 1;

[0026] The mounting nut 5 is threadedly installed at the lower end of the bottom tube 4;

[0027] The support rod 1 has a reduced outer diameter tube section 11 at its bottom end. The bottom tube 4 includes an installation section 41 adapted to the reduced tube section 11 and a main body section 42 with an inner diameter smaller than the reduced tube section 11. The support rod 1 forms a first limiting step 12 at the upper end of the reduced tube section 11 that contacts the end of the bottom tube 4. A second limiting step 43 is formed between the main body section 42 and the installation section 41 that contacts the bottom end of the reduced tube section 11. The bottom tube 4 is provided with an annular plate 44 for installation and positioning. In this technical solution, the support rod is physically reduced in diameter and then pressed together with the bottom tube to achieve a stable connection between the support rod and the bottom tube. When the reduced tube section of the support rod is inserted into the bottom tube, the first limiting step and the second limiting step respectively limit the installation position of the two. In addition, tool-free installation is achieved by installing nuts, which has the advantages of simple structure and convenient processing.

[0028] Both the support rod 1 and the bottom tube 4 are made of stainless steel, which has the advantages of easy processing and low procurement cost. The bottom tube is formed by one-time processing of stainless steel tube, but other metal materials can also be used.

[0029] The bottom tube 4 is fitted with a decorative sleeve 7 for covering the annular plate and improving its aesthetics.

[0030] The support rod 1 is hollow and has inwardly rolled edges at both ends, which has the advantages of preventing scratches and increasing strength.

[0031] The number of support rods 1 is two, and the two are fixedly connected by a connecting sleeve 6. The connecting sleeve 6 is C-shaped and its inner wall is provided with a positioning step 61. The connecting sleeve 6, the lower crossbar 2 and the upper crossbar 3 are provided with several countersunk holes 62 for fastener installation. The connecting sleeve 6, the lower crossbar 2 and the upper crossbar 3 are rounded around the edges. The design of hiding the fastener in the countersunk holes and the rounded corners can prevent wires from getting caught. In addition, after the upper and lower support rods contact the positioning step, they are installed in a vertical state.

[0032] The lower crossbar 2 is provided with a plurality of wire reels 21 and mounting holes 22 for mounting the wire reels 21. The bottom end of the wire reel 21 is elastically engaged with the mounting hole 22. The unique snap-fit ​​wire reel quick installation method will not cause the installation to loosen due to long-term vibration.

[0033] The inner wall of the mounting hole 22 is provided with a plurality of limiting grooves 23. One end of the coil 21 inserted into the mounting hole 22 is provided with a limiting rib 24 that is adapted to the limiting groove 23. The limiting groove can cooperate with the limiting rib to prevent the coil from rotating, and the limiting groove can guide the installation of the buckle.

[0034] The upper crossbar 3 is equipped with a wire-passing ceramic 31.

[0035] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] Please note to all technical personnel: Although this utility model has been described according to the specific embodiments above, the inventive concept of this utility model is not limited to this utility model. Any modifications that utilize the inventive concept will be included within the scope of protection of this patent.

Claims

1. A sewing machine thread frame structure, comprising a support rod (1) and a base assembly disposed at the bottom of the support rod (1), wherein a plurality of crossbars are mounted on the support rod (1), the crossbars comprising a lower crossbar (2) located below and an upper crossbar (3) located above, characterized in that: The base assembly includes: The bottom tube (4) is inserted into the bottom of the support rod (1) and is interference-fitted. The mounting nut (5) is threadedly installed at the lower end of the bottom tube (4); The support rod (1) has a reduced outer diameter tube section (11) at its bottom end. The bottom tube (4) includes an installation section (41) adapted to the reduced tube section (11) and a main body section (42) with an inner diameter smaller than that of the reduced tube section (11). The support rod (1) forms a first limiting step (12) at the upper end of the reduced tube section (11) that contacts the end of the bottom tube (4). A second limiting step (43) is formed between the main body section (42) and the installation section (41) that contacts the bottom end of the reduced tube section (11). The bottom tube (4) is provided with an annular plate (44) for installation and positioning.

2. The thread frame structure of the sewing machine according to claim 1, characterized in that: Both the support rod (1) and the bottom tube (4) are made of stainless steel.

3. The thread frame structure of the sewing machine according to claim 1, characterized in that: The bottom tube (4) is fitted with a decorative sleeve (7) for covering.

4. The thread frame structure of the sewing machine according to claim 1, characterized in that: The support rod (1) is hollow and has inwardly rolled edges at both ends.

5. The thread frame structure of the sewing machine according to claim 1, characterized in that: The number of support rods (1) is two, and the two are provided with connecting sleeves (6) for fixed connection. The connecting sleeves (6) are C-shaped and have positioning steps (61) on their inner walls. The connecting sleeves (6), the lower crossbar (2) and the upper crossbar (3) are provided with several countersunk holes (62) for fastener installation. The connecting sleeves (6), the lower crossbar (2) and the upper crossbar (3) are rounded around their perimeter.

6. The thread frame structure of the sewing machine according to claim 1, characterized in that: The lower crossbar (2) is provided with a plurality of coils (21) and mounting holes (22) for the coils (21) to be installed. The bottom end of the coil (21) is elastically engaged with the mounting hole (22).

7. The sewing machine thread frame structure according to claim 6, characterized in that: The inner wall of the mounting hole (22) is provided with several limiting grooves (23), and the end of the coil (21) inserted into the mounting hole (22) is provided with a limiting rib (24) that is adapted to the limiting groove (23).

8. The thread frame structure of the sewing machine according to claim 1, characterized in that: The upper crossbar (3) is equipped with a wire-passing ceramic (31).

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