A thread holder structure on a sewing machine

Abstract

The utility model relates to a kind of thread rack structures on sewing machine, including support column and pass line cross bar group, the pass line cross bar group includes wire cross bar and thread drum cross bar, the wire cross bar is located in the top of thread drum cross bar, the thread drum cross bar is equipped with the thread column detachably connected with it, the wire cross bar and thread drum cross bar are equipped with mounting hole and the slot being communicated with mounting hole, the support column is arranged in mounting hole, wire cross bar and thread drum cross bar are equipped with locking assembly, locking assembly can adjust the clamping force of the slot two sides cross bar, so that pass line cross bar group holds tightly support column or loosens support column, to realize the installation or disassembly between pass line cross bar group and support column.Using the above technical scheme, the utility model provides a kind of thread rack structures on sewing machine, pass line cross bar group and support column are conveniently and quickly disassembled and assembled, and support column is arranged in sections, is convenient to store and transport, saves space.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, and in particular to a thread frame structure for a sewing machine. Background Technology

[0002] The thread holder on a sewing machine is a device for organizing sewing threads, ensuring that multiple sewing threads do not become tangled or mixed together when used simultaneously.

[0003] The existing wire rack includes support columns and wire guide crossbars fixed on the support columns. The wire guide crossbars are divided into conductor crossbars and spool crossbars. The conductor crossbars are used for conductors, the spool crossbars are used to hold spools, and the spools are used to fix the spools.

[0004] In the prior art, the crossbar and support column are assembled in a fixed connection, which cannot be disassembled, making it inconvenient for maintenance and replacement. In addition, the angle of the crossbar is fixed and cannot be adjusted. Furthermore, the support column in the prior art is set as a whole, and the line column is also fixed to the crossbar of the line spool, which cannot be disassembled, making the support column inconvenient to transport. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the prior art by providing a thread frame structure for a sewing machine. The thread guide bar group and the support column are easy and quick to assemble and disassemble. At the same time, the support column is set in sections, which facilitates storage and transportation and saves space.

[0006] The technical solution of this utility model is as follows: A thread frame structure for a sewing machine includes a support column and a thread guide crossbar assembly. The thread guide crossbar assembly includes a guide crossbar and a spool crossbar. The guide crossbar is located above the spool crossbar. The spool crossbar has a thread post detachably connected to it. The support column includes several separately arranged column sections. Adjacent columns are detachably connected by a connecting component. Both the guide crossbar and the spool crossbar have mounting holes and slots communicating with the mounting holes. The support column passes through the mounting holes. Both the guide crossbar and the spool crossbar have locking components. The locking components can adjust the clamping force of the crossbars on both sides of the slot so that the thread guide crossbar assembly can grip or release the support column, thereby realizing the installation or disassembly of the thread guide crossbar assembly and the support column.

[0007] Using the above technical solution, the support column is inserted into the mounting hole of the crossbar of the bobbin. The size of the slot is adjusted by the locking component so that the crossbar hugs the support column and fixes the crossbar on the support column. Alternatively, there is a gap between the crossbar and the support column, which allows the crossbar to rotate circumferentially and slide axially relative to the support column, thereby realizing the orientation adjustment of the crossbar or removing it from the support column. The support column is set separately, and the bobbin column and the crossbar of the bobbin can also be disassembled for easy storage and transportation.

[0008] Further features of this invention: The locking assembly includes a rotating component and a limiting rod. One end of the limiting rod passes through the rotating component and through the slot, and a limiting element is provided on the limiting rod. The other end of the limiting rod is provided with a limiting part. An axial limiting space is formed between the limiting element and the limiting part. The rotating component is rotatably mounted on the limiting rod and is located between the limiting part and the side of the crossbar. The limiting part abuts against the outer surface of the rotating component. One side of the inner surface of the rotating component and the outer surface of the crossbar is provided with an inclined surface or an arc surface, and the other side is provided with a pressing surface, so that when the rotating component rotates, the pressing surface cooperates with the inclined surface or arc surface to adjust the clamping force of the crossbars on both sides of the slot.

[0009] With the above-mentioned further configuration, the size of the slot opening can be adjusted by rotating the rotating component, thereby adjusting the clamping force of the crossbar. The crossbar can be disassembled and assembled without the need for tools, which is convenient, quick, time-saving, and labor-saving. When the rotating component rotates, the pressing surface cooperates with the inclined surface or arc surface, and the crossbar slides axially relative to the limiting rod, thereby making the slot larger or smaller. When the crossbar is unlocked, it can rotate circumferentially or slide axially relative to the support column, and the crossbar angle can be adjusted or disassembled. When the crossbar is locked, it cannot move and has good stability.

[0010] A further feature of this invention is that the horizontal bar of the spool is provided with an installation channel, and the lower end of the spool post is provided with at least two elastic hooks. There is a gap between two adjacent elastic hooks to allow for elastic deformation. Each elastic hook passes through the installation channel and is hooked to the bottom of the horizontal bar of the spool to achieve the connection between the spool post and the horizontal bar of the spool. The installation channel is provided with a space for each elastic hook to elastically deform inward so that the elastic hook can disengage from the horizontal bar of the spool.

[0011] With the above-mentioned further configuration, there is a gap between adjacent elastic hooks. When the elastic hooks are located in the installation channel, each elastic hook deforms inward, allowing it to pass through the installation channel. After passing through the installation channel, the elastic hooks will rebound due to their own elasticity, hooking the bottom of the spool crossbar and completing the connection between the wire post and the spool crossbar. To disassemble, press each elastic hook inward to disengage it from the bottom of the spool crossbar, and then pull the wire post outward to remove it from the spool crossbar. This makes the disassembly and assembly of the wire post very convenient, and the wire post will not be damaged after disassembly.

[0012] A further refinement of this invention: the connecting assembly includes a sleeve and a first locking sleeve and a second locking sleeve spirally fitted over the sleeve. The sleeve has a first spiral portion, a plurality of first locking plates, a second spiral portion, and a plurality of second locking plates. The first locking plates are located above the first spiral portion, with adjacent first locking plates spaced apart. One column is inserted into the sleeve and located inside the first locking plates. The first locking sleeve is fitted over the first spiral portion and the first locking plates and is threadedly connected to the first spiral portion to achieve connection or disassembly between the column and the sleeve. The second locking plates are located below the second spiral portion, with adjacent second locking plates spaced apart. Another column is inserted into the sleeve and located inside the second locking plates. The second locking sleeve is fitted over the second spiral portion and the second locking plates and is threadedly connected to the second spiral portion to achieve connection or disassembly between the column and the sleeve.

[0013] With a further modification, the lower end of the upper column is inserted into the upper end of the sleeve, and the upper end of the lower column is inserted into the lower end of the sleeve. The locking plates are located on the outer periphery of the columns. By rotating the locking sleeve, the gap between the locking plates is reduced, and the entire structure deforms inward to clamp the column and lock it, thus connecting the two columns. When disassembly is required, the locking sleeve is rotated in the opposite direction, the gap between the locking plates is increased, and the column can be pulled outward to disassemble the two columns. The structure is simple and the disassembly and assembly are convenient and quick.

[0014] A further improvement of this invention is that at least two spool crossbars are provided, each spool crossbar is arranged sequentially along the vertical direction of the support column, and each spool crossbar is provided with a thread-passing hole or a guide wire with a thread-passing hole for the sewing thread of the next layer of spool crossbar to pass through. The guide wire is detachably connected to the spool crossbar.

[0015] With the above-mentioned further configuration, the sewing thread of the spool placed on the next layer of spool crossbar can go upward and pass through the thread hole of the previous layer. The bottom spool crossbar may not have a guide wire to guide the sewing thread. The guide wire is detachable and easy to replace when damaged.

[0016] A further feature of this invention is that the lower end of the support column is provided with a clamping boss and a threaded section. The threaded section is located at the lower end of the clamping boss, and a clamping member is threadedly connected to the threaded section. The clamping member cooperates with the clamping boss to install the support column on the sewing machine. A gasket is also fitted on the support column, and the gasket is located on the lower end face of the clamping boss.

[0017] With the above-mentioned further design, the support column can be installed or removed by rotating the clamping device, which is convenient and quick and does not require other tools for installation. The clamping boss and the clamping device can be used to clamp the support column on the sewing machine table or other places to achieve the installation of the support column. The gasket can play a role in preventing wear and make the structure more stable and less prone to shaking when the support column is installed on the sewing machine.

[0018] A further improvement of this utility model includes a cable guide bracket and a connecting rod. The connecting rod is mounted on a support column, and the cable guide bracket is mounted on the connecting rod via a universal guide. One end of the universal guide is provided with a universal ball, and the other end is provided with a guide channel. The cable guide bracket passes through the guide channel. The end of the connecting rod is provided with several fastening pieces, with adjacent fastening pieces spaced apart. Each fastening piece forms a receiving groove for the universal ball to move between it, and a fastening sleeve is threaded onto the external thread of the fastening piece.

[0019] With a further improvement, the thread guide bracket is equipped with several second thread holes through which the sewing thread can pass, providing guidance and support. The thread guide bracket can also rotate relative to the connecting rod, adjusting its orientation to better match the thread feeding and sewing positions. Rotation of the fastening sleeve can decrease or increase the gap between the fastening pieces, allowing the universal guide to be installed on or removed from the connecting rod. The universal guide rotates within the receiving groove via a universal ball joint, adjusting the angle of the thread guide bracket. Compared to existing thread guide bracket structures, this design is more cost-effective and easier to install. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present utility model;

[0021] Figure 2 This is a partial schematic diagram of the crossbar of the spool according to a specific embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram showing an inclined surface on the rotating component according to a specific embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the rotating component according to a specific embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of a specific embodiment of the crossbar of the spool of this utility model;

[0025] Figure 6 This is a schematic diagram of the movable groove on the crossbar in a specific embodiment of the present utility model;

[0026] Figure 7 This is a schematic diagram of the limiting rod and nut in a specific embodiment of this utility model;

[0027] Figure 8 This is a schematic diagram of the support column and connecting components according to a specific embodiment of the present utility model;

[0028] Figure 9 This is an exploded view of the connecting component in a specific embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the clamping boss and clamping member in a specific embodiment of the present utility model;

[0030] Figure 11 This is a schematic diagram showing the connection between the universal guide and the connecting rod in a specific embodiment of this utility model;

[0031] Figure 12 This is a schematic diagram of a universal guide component according to a specific embodiment of the present utility model;

[0032] Figure 13 This is a schematic diagram of the connecting rod in a specific embodiment of the present utility model;

[0033] Figure 14 This is a schematic diagram of a specific embodiment of the crossbar of the spool of this utility model;

[0034] Figure 15 This is a schematic diagram of a linear column in a specific embodiment of the present utility model;

[0035] Figure 16 This is a schematic diagram illustrating the riveting of both ends of the limiting post in a specific implementation of this utility model;

[0036] Figure 17 This is a schematic diagram showing the wire hole located on the crossbar of the wire spool in a specific embodiment of this utility model;

[0037] Figure 18 This is a schematic diagram of the pressing component in a specific embodiment of this utility model;

[0038] Figure 19 A schematic diagram showing the groove on the crossbar of the spool in a specific embodiment of this utility model;

[0039] Figure 20 This is a schematic diagram of a specific embodiment of the wire component of this utility model.

[0040] In the diagram, 1. Support column; 11. Column body; 13. Clamping boss; 14. Threaded section; 15. Washer; 21. Wire crossbar; 22. Wire spool crossbar; 221. Wire post; 222. Installation channel; 223. Elastic hook; 224. Wire spool; 225. Slot; 226. Opening; 227. Sleeve; 228. Pressing component; 229. Pressure plate; 23. Mounting hole; 24. Slot; 25. Mounting slot; 26. Movable slot; 3. Locking assembly; 31. Rotating component; 312. Receiving slot; 313. First through hole; 314. 32. Lug; 321. Limiting rod; 322. Limiting part; 4. Connecting rod; 41. Fastening piece; 5. Connecting assembly; 51. Sleeve; 511. First spiral part; 512. First locking piece; 513. Second spiral part; 514. Second locking piece; 52. First locking sleeve; 53. Second locking sleeve; 6. Clamping piece; 7. Cable guide bracket; 8. Universal guide; 81. Universal ball; 82. Guide channel; 9. Fastening sleeve; 10. Wire component; 101. First cable hole; 102. Hook; 20. Inclined surface. Detailed Implementation

[0041] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0042] It should be noted that all directional indicators (such as up, down, forward, backward, etc.) in the description of this utility model are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0043] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0045] like Figure 1-20As shown, a thread frame structure for a sewing machine includes a support column 1 and a thread guide crossbar assembly. The thread guide crossbar assembly includes a guide bar 21 and a spool crossbar 22. The guide bar 21 is located above the spool crossbar 22 and has a guide hole. The spool crossbar 22 has a thread post 221 detachably connected to it. The support column 1 includes several separately arranged column sections 12, which are detachably connected to adjacent columns via a connecting assembly 5. It can be two, three, or four columns, etc. Both the guide bar 21 and the spool crossbar 22 have mounting holes 23 and slots 24 communicating with the mounting holes 23. The slots can be arranged along the length of the crossbar or at an angle. The support column 1 passes through the mounting holes 23. Locking components 3 are provided on both the wire guide crossbar 21 and the spool crossbar 22 inside the hole 23. The locking components 3 can adjust the clamping force of the crossbars on both sides of the slot 24 so that the wire guide crossbar group hugs the support column 1 or loosens the support column 1, thereby realizing the installation or disassembly between the wire guide crossbar group and the support column 1. The support column 1 is inserted into the mounting hole 23 of the spool crossbar 22. The size of the slot 24 is adjusted by rotating the rotating component so that the crossbar hugs the support column 1 so that the crossbar is fixed on the support column 1, or there is a gap between the crossbar and the support column 1, so that it can rotate circumferentially and slide axially relative to the support column 1, thereby realizing the orientation adjustment of the crossbar or removing it from the support column 1. The support column 1 is set separately, and the wire column 221 and the spool crossbar 22 can also be disassembled for easy storage and transportation.

[0046] In one embodiment of the locking assembly 3, the locking assembly 3 includes a rotating member 31 and a limiting rod 32. One end of the limiting rod 32 passes through the rotating member 31 and through the slot 24. A limiting element 322 is provided on the limiting rod 32, and a limiting part 321 is provided at the other end of the limiting rod 32. The limiting element 322 and the limiting part 321 cooperate to form an axial limiting space. The crossbar is located within the limiting space. The limiting part 321 is integrally formed on the limiting rod 32. The rotating member 31 is rotatably mounted on the limiting rod and is located between the limiting part 321 and the crossbar. The limiting part 321 abuts against the outer side of the rotating member 31. One side of the inner side of the rotating member 31 and the outer side of the crossbar is provided with an inclined surface or an arc surface, and the other side is provided with a pressing surface. When the rotating member 31 rotates, the pressing surface cooperates with the inclined surface or arc surface to adjust the clamping force of the crossbars on both sides of the slot 24. The opening size of the slot 24 can be adjusted by rotating the rotating member 31. The pressing surface can be... One side surface is provided with a protrusion, or it can be an inclined surface or an arc surface; the crossbar can be disassembled and assembled without the need for tools, which is convenient, quick and easy, saving time and effort, and the adjustment is convenient and quick. Compared with locking or unlocking the crossbar by using bolts and nuts, which requires turning the nut many times, the locking component of this application is more convenient and quick to operate. Only a small rotation angle is needed to unlock or lock. For example, when the rotating part 31 rotates clockwise, the rotating part 31 moves on the inclined surface or arc surface, so that one side wall of the crossbar is squeezed and axially slid relative to the other side wall in the axial space, thereby making the slot 24 smaller, the crossbar is tightly locked and cannot move, and has good stability. When rotating in the opposite direction, the slot becomes larger, the crossbar is unlocked, and it can rotate circumferentially and slide axially relative to the support column. The angle of the crossbar can be adjusted or disassembled. Of course, it can also be unlocked when rotating clockwise and locked when rotating counterclockwise, depending on the specific inclined surface. Specifically, regarding the cooperation between the limiting rod and the rotating component, the rotating component 31 is provided with a receiving groove 312, and the bottom of the receiving groove 312 is provided with a through hole 313 for the limiting rod 32 to pass through. The limiting part of the limiting rod 32 is located inside the receiving groove 312 and abuts against the bottom wall of the receiving groove 312, so that the limiting part is not exposed, which is more aesthetically pleasing and safer. The rotating component 31 is also provided with a lug 314, which is located outside the movable groove. The lug is designed to facilitate the operator to rotate the rotating component, and two lugs can be provided symmetrically for easier rotation.

[0047] Specifically, the limiting member 322 is set with a nut, and the limiting rod 32 can be set with a bolt. The limiting rod and the limiting member are threaded together. The limiting member 322 and the rotating member 31 are respectively located at both ends of the limiting rod 32. In this embodiment, the guide bar 21 and the spool bar 22 can also be provided with an installation groove 25 and a movable groove 26 on both sides of the slot 24. The installation groove and the movable groove are both connected to the slot 24. The nut is set in the installation groove 25, and the rotating member is rotatably set in the movable groove 26. One end of the limiting rod 32 extends through the slot 24 into the installation groove 25 and is threadedly connected to the nut. The bottom wall of the movable groove 26 is provided with an inclined surface 20, an arc surface, or a pressing surface.

[0048] Of course, the limiting rod 32 can also be riveted at both ends to form the limiting member 322 and the limiting part 321.

[0049] Alternatively, the limiting component 322 can be set with a limiting pin, and the limiting rod 32 has an insertion hole, with the limiting pin passing through the insertion hole.

[0050] In another embodiment of the locking assembly 3, the locking assembly 3 includes a rotating member 31 and a limiting rod 32. The limiting rod 32 is bolted on, with one end passing through the rotating member and threaded through a slotted joint onto the crossbar, and the other end having a limiting part 321. The rotating member is rotatably mounted on the limiting rod and located between the limiting part and the outer surface of the crossbar. The limiting part abuts against the outer surface of the rotating member. One side of the inner surface of the rotating member 31 and the outer surface of the crossbar has an inclined surface or an arc surface, and the other side has a pressing surface, so as to... When the rotating part 31 rotates, the pressing surface cooperates with the inclined surface or the arc surface to adjust the clamping force of the crossbars on both sides of the slot 24. In this embodiment, threaded holes and movable slots can also be provided on both sides of the slot 24 on the wire crossbar 21 and the wire spool crossbar 22. The threaded holes and movable slots are connected to the slot 24. The rotating part 31 is rotatably located in the movable slot. One end of the limiting rod 32 passes through the rotating part 31 and extends through the slot 24 to the threaded hole and is threadedly connected to the threaded hole. An inclined surface, an arc surface or a pressing surface is provided on the bottom wall of the movable slot 26.

[0051] The spool crossbar 22 is provided with an installation channel 222. The lower end of the spool post 221 is provided with at least two elastic hooks 223. A gap is provided between adjacent elastic hooks 223 to allow for elastic deformation. Each elastic hook 223 passes through the installation channel 222 and hooks onto the bottom of the spool crossbar 22 to connect the spool post 221 to the spool crossbar 22. The installation channel 222 provides space for each elastic hook to elastically deform inwards, allowing it to disengage from the spool crossbar's movement space. Each elastic hook deforms elastically within a single space, with gaps between adjacent elastic hooks 223. When an elastic hook is located in the installation channel 222, each elastic hook 223 deforms inwards, allowing it to pass through the installation channel 222. After passing through the installation channel 222, the elastic hook 223 rebounds due to its own elasticity, hooking onto the bottom of the spool crossbar 22, thus completing the connection between the spool post 221 and the spool crossbar 22. During disassembly, press each elastic hook inward to disengage it from the bottom of the spool crossbar 22, then pull outward to remove the wire post 221 from the spool crossbar 22. This makes the installation and removal of the wire post 221 very convenient, and it will not damage the wire post 221 after disassembly. The wire post is also equipped with a limiting boss and a limiting step in the installation channel. When the wire post is installed on the spool crossbar, the limiting boss abuts against the limiting step to limit the wire post and prevent it from detaching from the spool crossbar. The platform is integrally formed on the upper end of each elastic hook; it also includes a wire reel 244. The wire reel 224 and the wire spool crossbar 22 are both made of plastic and integrally formed. The wire spool crossbar 22 has several wire reels 224 along its length, which is stronger. Unless the wire reel and the wire spool crossbar 22 break, the wire reel 224 and the wire spool crossbar 22 will basically not separate. When the wire reel is provided on the wire spool crossbar, the wire reel has a through hole communicating with the installation channel. The limiting boss can also be set in the through hole.

[0052] The connecting assembly 5 includes a sleeve 51 and a first locking sleeve 52 and a second locking sleeve 53 spirally fitted over the sleeve 51. The sleeve 51 is provided with a first spiral portion 511, a plurality of first locking pieces 512, a second spiral portion 513, and a plurality of second locking pieces 514. The first locking pieces 512 are located above the first spiral portion 511, with adjacent first locking pieces 512 spaced apart. A column is inserted into the sleeve 51 and located inside the first locking pieces 512. The first locking sleeve 52 is fitted over the first spiral portion 511 and the first locking pieces 512 and is threadedly connected to the first spiral portion 511 to realize the connection or disassembly of the column and the sleeve 51. The second locking pieces 514 are located below the second spiral portion 513, with adjacent second locking pieces 514 spaced apart. The two columns are spaced apart. Another column is inserted into the sleeve 51 and located inside the second locking piece 514. The second locking sleeve 53 is sleeved on the outside of the second spiral part 513 and the second locking piece 514 and is threadedly connected to the second spiral part 513 to realize the connection or disassembly of the column and the sleeve 51. The lower end of the upper column between two adjacent columns is inserted into the upper end of the sleeve 51, and the upper end of the lower column is inserted into the lower end of the sleeve 51. The locking piece is located on the outer periphery of the column. By rotating the locking sleeve, the gap between the locking pieces is reduced, and the whole structure deforms inward to hug the column and lock it, thus realizing the connection of the two columns. When disassembly is required, the locking sleeve is rotated in the opposite direction, the gap between the locking pieces is increased, and the column can be pulled out to realize the disassembly of the two columns. The structure is simple and the disassembly and assembly are convenient and quick.

[0053] At least two spool crossbars 22 are provided, and each spool crossbar 22 is arranged sequentially along the vertical direction of the support column 1. Each spool crossbar 22 is provided with a thread guide hole 101 or a guide wire 10 with a thread guide hole for guiding the sewing thread placed on the next spool crossbar. The guide wire 10 is detachably connected to the spool crossbar 22. When the thread guide hole is directly provided on the spool crossbar, a protective sleeve made of metal or ceramic can be placed inside the thread guide hole. The sewing thread passes through the protective sleeve, so that the sewing thread will not rub against the spool crossbar when sliding, avoiding damage to the spool crossbar. The sewing thread of the spool placed on the next spool crossbar 22 can move upwards and... The thread passes through the first thread hole 101. The bottommost thread spool crossbar does not need to have a guide wire. The topmost sewing thread passes through the guide wire hole on the guide wire crossbar, so that the sewing threads are not messy and do not interfere with each other. The guide wire is detachable and easy to replace when damaged. The guide wire 10 can be set as a torsion spring. The torsion spring is hooked on the thread spool crossbar. The spiral part in the middle of the torsion spring forms the thread hole. The two ends of the torsion spring extend backward to form hooks 102. The thread spool crossbar 22 has a groove 225 that cooperates with the hook 102 and an opening 226 for the hook 102 to enter and exit the groove 225.

[0054] The lower end of the support column 1 is provided with a clamping boss 13 and a threaded section 14. The threaded section 14 is located at the lower end of the clamping boss 13, and a clamping member 6 is threadedly connected to the threaded section 14. The clamping member 6 cooperates with the clamping boss 13 to install the support column 1 on the sewing machine. A gasket 15 is also fitted on the support column 1. The gasket 15 is located on the lower end face of the clamping boss 13. The support column 1 can be installed or removed by rotating the clamping member 6, which is convenient and quick and does not require the use of other tools for installation. The clamping boss 13 and the clamping member 6 can be used to clamp the support column 1 on the sewing machine table or other places to achieve the installation of the support column 1. The gasket 15 can play a role in preventing wear and makes the structure of the support column 1 more stable and less prone to shaking when installed on the sewing machine.

[0055] It also includes a thread guide bracket 7 and a connecting rod 4. The connecting rod 4 is mounted on the support column 1 and located between the wire guide crossbar and the spool crossbar. The connection method between the connecting rod 4 and the support column is the same as the connection method between the wire guide crossbar and the spool crossbar. The thread guide bracket 7 is mounted on the connecting rod 4 via a universal guide 8. The thread guide bracket 7 has several second thread holes through which the sewing thread can pass, providing guidance and support. Specifically, one end of the universal guide 8 has a universal ball 81, and the other end has a guide channel 82. The thread guide bracket 7 passes through the guide channel 82. The end of the connecting rod... The device includes several fastening pieces 41, with adjacent fastening pieces 41 spaced apart. Each fastening piece 41 forms a receiving groove for the universal ball 81 to move between. Each fastening piece 41 is threaded with a fastening sleeve 9. By rotating the fastening sleeve 9, the gap between each fastening piece 41 can be reduced or increased, thereby allowing the universal guide 8 to be installed on or removed from the connecting rod. The universal guide 8 can be adjusted by rotating the universal ball 81 within the receiving groove, thereby adjusting the angle and orientation of the thread guide 7, making the thread feeding orientation more compatible with the sewing orientation. Compared with the existing thread guide 7 structure, this design is more cost-effective and easier to install.

[0056] A detachable sleeve 227 and a pressing member 228 are fitted onto the thread post 221. The pressing member 228 is located above the sleeve 227 and has several elastically deformable pressure plates 229. When a thread spool is provided on the thread spool crossbar, the sleeve 227 is located above the thread spool 4. It is installed automatically according to the usage and is used to fix and guide the sewing thread, ensure uniform tension of the sewing thread, prevent the sewing thread from tangling or knotting, keep the sewing thread stable during use, and reduce the occurrence of thread loosening or breakage during sewing. When the thread spool is fitted onto the thread post, both the sleeve and the pressing member are located inside the thread spool. The pressing member and the sleeve cooperate to position the thread spool and prevent it from sliding.

Claims

1. A thread frame structure for a sewing machine, comprising a support column (1) and a thread guide bar assembly, wherein the thread guide bar assembly includes a guide bar (21) and a spool bar (22), wherein the guide bar (21) is disposed above the spool bar (22), characterized in that, The wire spool crossbar (22) is provided with a wire post (221) that can be detachably connected to it. The support column (1) includes several sections of column (11) that are separately arranged. Adjacent columns (11) are detachably connected by a connecting component (5). The wire crossbar (21) and the wire spool crossbar (22) are provided with mounting holes (23) and slots (24) that communicate with the mounting holes (23). The support column (1) is inserted into the mounting holes (23). The wire crossbar (21) and the wire spool crossbar (22) are provided with locking components (3). The locking components (3) can adjust the clamping force of the crossbars on both sides of the slot (24) so ​​that the crossbars hug the support column or loosen the support column (1), thereby realizing the installation or disassembly between the wire crossbar group and the support column (1).

2. The thread holder structure on the sewing machine according to claim 1, characterized in that, The locking assembly (3) includes a rotating component (31) and a limiting rod (32). One end of the limiting rod (32) passes through the rotating component (31) and through the slot (24), and a limiting component (322) is provided on the limiting rod (32). A limiting part (321) is provided at the other end of the limiting rod (32). An axial limiting space is formed between the limiting component (322) and the limiting part (321). The rotating component (31) is rotatably disposed outside the limiting rod (32) and located between the limiting part (321) and the crossbar. The limiting part (321) abuts against the rotating component (31). One side of the inner side of the rotating component (31) and the outer side of the crossbar is provided with an inclined surface (20) or an arc surface, and the other side is provided with a pressing surface, so that when the rotating component (31) rotates, the pressing surface cooperates with the inclined surface or the arc surface to adjust the clamping force of the crossbars on both sides of the slot (24).

3. The thread holder structure on the sewing machine according to claim 2, characterized in that, The limiting member (322) is provided with a nut, and the limiting rod (32) is threadedly engaged with the limiting member.

4. The thread holder structure on the sewing machine according to claim 2, characterized in that, The two ends of the limiting rod (32) are riveted to form the limiting member (322) and the limiting part (321).

5. The thread carrier structure on a sewing machine according to claim 1, 2, 3, or 4, characterized in that, The horizontal bar (22) of the spool is provided with an installation channel (222) along its vertical direction. At least two elastic hooks (223) extend from the lower end of the spool post (221). Each elastic hook (223) passes through the installation channel (222) and is hooked at the bottom of the horizontal bar (22) to achieve the connection between the spool post (221) and the horizontal bar (22). The installation channel (222) is provided with a space for each elastic hook (223) to elastically deform inward so that the elastic hook (223) is disengaged from the moving space of the horizontal bar (22).

6. The thread carrier structure on a sewing machine according to claim 1, 2, 3, or 4, characterized in that, The connecting assembly (5) includes a sleeve (51) and a first locking sleeve (52) and a second locking sleeve (53) spirally fitted outside the sleeve (51). The sleeve (51) is provided with a first spiral portion (511), a plurality of first locking pieces (512), a second spiral portion (513), and a plurality of second locking pieces (514). The first locking pieces (512) are located above the first spiral portion (511), and adjacent first locking pieces (512) are spaced apart. A column is inserted into the sleeve (51) and located inside the first locking piece (512). The first locking sleeve (52) is fitted outside the first spiral portion (511). A spiral part (511) and a first locking piece (512) are connected by threads to the first spiral part (511) to achieve connection or disassembly of the column and the sleeve (51). A second locking piece (514) is located below the second spiral part (513), and two adjacent second locking pieces (514) are spaced apart. Another column is inserted into the sleeve (51) and located inside the second locking piece (514). A second locking sleeve (53) is sleeved on the second spiral part (513) and the second locking piece (514) and is connected by threads to the second spiral part (513) to achieve connection or disassembly of the column and the sleeve (51).

7. The thread carrier structure on a sewing machine according to claim 1, 2, 3, or 4, characterized in that, At least two spool crossbars (22) are provided, and each spool crossbar is arranged sequentially along the vertical direction of the support column (1). The spool crossbar (22) is provided with a thread hole (101) for the sewing thread on the next layer of spool crossbar to pass through, or a guide wire (10) with a thread hole. The guide wire (10) is detachably connected to the spool crossbar (22).

8. The thread holder structure on a sewing machine according to claim 7, characterized in that, The wire component (10) is provided with a torsion spring. The spiral part in the middle of the torsion spring forms the wire hole. The two ends of the torsion spring extend backward to form hooks (102). The crossbar (22) of the wire spool is provided with a groove (225) that cooperates with the hook (102) and an opening (226) for the hook (102) to enter and exit the groove (225).

9. The thread carrier structure on a sewing machine according to claim 1, 2, 3, or 4, characterized in that, The lower end of the support column (1) is provided with a clamping boss (13) and a threaded section (14). The threaded section (14) is located at the lower end of the clamping boss (13). A clamping member (6) is threadedly connected to the threaded section (14). The clamping member (6) cooperates with the clamping boss (13) to install the support column (1) on the sewing machine. A gasket (15) is also fitted on the support column (1). The gasket (15) is located on the lower end face of the clamping boss (13).

10. The thread carrier structure on a sewing machine according to claim 1, 2, 3, or 4, characterized in that, It also includes a cable guide (7) and a connecting rod (4). The connecting rod (4) is installed on the support column (1). The cable guide (7) is installed on the connecting rod (4) through a universal guide (8). One end of the universal guide (8) is provided with a universal ball (81), and the other end is provided with a guide channel (82). The cable guide (7) passes through the guide channel (82). The end of the connecting rod (4) is provided with several fastening pieces (41). Two adjacent fastening pieces (41) are spaced apart. Each fastening piece (41) forms a receiving groove for the universal ball (81) to move. The fastening piece (41) is threaded with a fastening sleeve (9).

11. The thread carrier structure on a sewing machine according to claim 1, 2, 3, or 4, characterized in that, The post (221) is fitted with a detachable sleeve (227) and a pressing member (228). The pressing member (228) is located above the sleeve (227) and has several elastically deformable pressure plates (229).

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