Sewing machine base and split shuttleless sewing machine for four-sided sewing

Abstract

This utility model discloses a sewing machine base and a split-type shuttleless sewing machine for four-sided sewing, relating to the field of sewing machine technology. The sewing machine base includes a base and a movable seat. The technical solution of this utility model, through an integrated base and movable seat, facilitates installation during the assembly of the sewing machine base, greatly improving assembly efficiency. Furthermore, by reducing the distance between the first and second transmission parts, it avoids instability in the movement of the second transmission part during transmission from the first to the second transmission part, thereby reducing transmission noise.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, and in particular to a sewing machine base and a split-type shuttleless sewing machine for four-sided sewing. Background Technology

[0002] As an important component of sewing operations, the sewing machine base is often made into multiple parts for ease of assembly. This facilitates casting and orderly assembly. However, in actual use, the simultaneous assembly of multiple parts often results in significant noise. Furthermore, the excessively long drive shaft in the transmission connection of the base can cause deflection during transmission, further increasing the noise generated. Utility Model Content

[0003] The main purpose of this utility model is to propose a sewing machine base and a split shuttleless sewing machine for four-sided sewing, which aims to reduce the number of required parts by assembling parts through an integrated molded base, simplify the assembly process, and facilitate later debugging.

[0004] To achieve the above objectives, the sewing machine base proposed in this utility model includes:

[0005] The base is integrally formed, and a first transmission part is provided inside the base;

[0006] A movable seat is detachably connected to the base. The movable seat is provided with a second transmission part, which extends into the base and is located on one side of the first transmission part.

[0007] The second transmission part extending into the base is connected to the first transmission part.

[0008] In one embodiment, the base surface is provided with a mounting groove adapted to the movable seat, the movable seat is mounted in the mounting groove, the movable seat extends into the base and is close to the first transmission part;

[0009] The second transmission part, which is disposed within the movable seat, extends out of the movable seat and is connected to the first transmission part.

[0010] In one embodiment, the movable seat includes a base and a first cover, the first cover being connected to the base, and the first cover and the base forming a transmission space, a second transmission part being disposed within the transmission space, the second transmission part partially penetrating the base and being connected to the first transmission part;

[0011] The first cover is embedded in the mounting groove, and the base connected to the first cover extends into the base and is close to the first transmission part to reduce the distance between the base and the first transmission part.

[0012] In one embodiment, the second transmission unit includes a plurality of transmission shafts and a plurality of first gears. The plurality of transmission shafts are rotatably connected to the transmission space and are spaced apart. Each transmission shaft in the transmission space is connected to a first gear. Adjacent first gears are interconnected. One of the two adjacent transmission shafts extends to one side of the first transmission unit and is connected to the first transmission unit.

[0013] In one embodiment, the second transmission part includes an eccentric part, the second transmission part is partially inserted through the first cover, the eccentric part is provided on the portion of the second transmission part inserted through the first cover, and a lever part is connected to the eccentric part to move the lever part on the surface of the base.

[0014] In one embodiment, one end of a drive shaft passes through the first cover and is connected to the eccentric portion;

[0015] Alternatively, one end of one of the two adjacent drive shafts passes through the first cover and is connected to the eccentric portion.

[0016] In one embodiment, the eccentric portion includes a third gear portion and a bearing portion. The third gear portion is connected to one end of the transmission shaft, and the rotation center of the bearing portion is connected to the center of the third gear portion and is offset from the transmission shaft.

[0017] In one embodiment, the bearing portion includes a first rotating portion, a second rotating portion, and a bearing shaft. The first rotating portion is sleeved on the second rotating portion and is arranged around the side of the second rotating portion. A plurality of rolling portions are arranged between the first rotating portion and the second rotating portion. The bearing shaft is connected to the second rotating portion and is connected to the surface of the third gear portion. The bearing shaft is offset from the transmission shaft.

[0018] The bearing portion is connected to the paddle portion, and the first rotating portion is fixedly connected to the paddle portion. The bearing shaft extends out of the paddle portion and is connected to the surface of the third gear portion.

[0019] In one embodiment, the paddle portion includes a second cover and a paddle body, the second cover being connected to the paddle body, the second cover and the paddle body forming a bearing space, and the eccentric portion being disposed within the bearing space;

[0020] The first rotating part is connected to the paddle body, and both the first rotating part and the second rotating part abut against the second cover.

[0021] This utility model also proposes a split-type shuttleless sewing machine for four-sided sewing, including a sewing machine base.

[0022] The technical solution of this utility model uses an integrated molded base with a movable seat, which facilitates installation during the assembly of the sewing machine base and greatly improves the assembly efficiency of the sewing machine base. Moreover, by reducing the distance between the first transmission part and the second transmission part, the stability of the movement of the second transmission part is avoided during the transmission from the first transmission part to the second transmission part, thereby reducing the generation of transmission noise. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 A schematic diagram of a sewing machine base according to an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of another embodiment of the sewing machine base provided by this utility model;

[0026] Figure 3 A schematic diagram of the first structure of the movable seat in an embodiment of the sewing machine base provided by this utility model;

[0027] Figure 4 This is a schematic diagram of the second structure of the movable seat in one embodiment of the sewing machine base provided by this utility model;

[0028] Figure 5 for Figure 4 Large cross-sectional view at point AA;

[0029] Figure 6 This is a schematic diagram of the third structure of a movable seat in one embodiment of the sewing machine base provided by this utility model.

[0030] Explanation of icon numbers:

[0031] 100. Sewing machine base; 10. Base; 11. First transmission unit; 12. Base body; 13. Drive cavity; 20. Moving seat; 21. Paddle body; 22. Base; 23. Second cover; 24. Third cover; 25. First cover; 30. Second transmission unit; 31. Transmission shaft; 32. First gear; 33. Transmission space; 34. Bearing; 35. Third gear; 36. Rotating cavity.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] 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 scope of protection of the present utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are 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. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments 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 impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] This utility model proposes a sewing machine base.

[0037] Please see Figure 1 In one embodiment of this utility model, the sewing machine base includes:

[0038] The base 10 is integrally formed, and the base 10 is provided with a first transmission part 11;

[0039] A movable seat 20 is detachably connected to the base 10. The movable seat 20 is provided with a second transmission part 30, which extends into the base 10 and is located on one side of the first transmission part 11.

[0040] The second transmission part 30, which extends into the base 10, is connected to the first transmission part 11.

[0041] like Figure 1 As shown, the sewing machine base includes a base 10 and a movable seat 20. The integrally formed base 10 and the movable seat 20 form the sewing machine base. During the assembly of the sewing machine base, the number of parts required for assembly is reduced, thereby improving the assembly efficiency of the sewing machine base.

[0042] like Figure 2 As shown, the base 10 includes a base body 12 and an output shaft. The base body 12 is provided with a drive cavity 13. The output shaft is rotatably connected to the base body 12 and passes through the drive cavity 13. A fourth gear is connected to the output shaft located in the drive cavity 13. The second transmission part 30 is close to the fourth gear and connected to the fourth gear.

[0043] The technical solution of this utility model, through the integrated base 10 and the movable seat 20, facilitates the installation during the assembly of the sewing machine base 100, greatly improves the assembly efficiency of the sewing machine base 100, and by reducing the distance between the first transmission part 11 and the second transmission part 30, the stability of the movement of the second transmission part 30 during the transmission from the first transmission part 11 to the second transmission part 30 is avoided, thereby reducing the generation of transmission noise.

[0044] In one embodiment, the base 10 has a mounting groove on its surface that is adapted to the movable seat 20. The movable seat 20 is mounted in the mounting groove and extends into the base 10 and is close to the first transmission part 11.

[0045] The second transmission part 30, which is disposed in the movable seat 20, extends out of the movable seat 20 and is connected to the first transmission part 11.

[0046] like Figure 2 As shown, a mounting groove recessed towards the driving cavity 13 is provided on the surface of the base 10. The opening of the mounting groove is away from the driving cavity 13, and the mounting groove communicates with the driving cavity 13.

[0047] It is understood that the movable seat 20 is embedded in the mounting groove so that the movable seat 20 is mounted on the base 10, and part of the movable seat 20 extends into the drive cavity 13. The movable seat 20 extending into the drive cavity 13 is positioned close to the first transmission part 11, thereby making the second transmission part 30 close to the first transmission part 11. This ensures the stability of the transmission of the second transmission part 30 while maintaining the connection between the first transmission part 11 and the second transmission part 30, and reduces noise.

[0048] Furthermore, the mounting slot is adapted to the movable seat 20. After the movable seat 20 is installed on the base 10, the movable seat 20 and the base 10 fit tightly together, ensuring the assembly quality between the movable seat 20 and the base 10, and also avoiding noise during operation due to gaps between the movable seat 20 and the base 10.

[0049] In one embodiment, the movable seat 20 includes a base 22 and a first cover 25. The first cover 25 is connected to the base 22, and the first cover 25 and the base 22 together form a transmission space 33. A second transmission part 30 is disposed in the transmission space 33. The second transmission part 30 partially penetrates the base 22 and is connected to the first transmission part 11.

[0050] The first cover 25 is embedded in the mounting groove, and the base 22 connected to the first cover 25 extends into the base 10 and is close to the first transmission part 11 to reduce the distance between the base 22 and the first transmission part 11.

[0051] like Figure 3 , Figure 4 and Figure 5 As shown, the second transmission part 30 is enclosed in the transmission space 33 by the base 22 and the second cover 23, and the movable seat 20 is embedded in the mounting groove so that the second transmission part 30 is close to the first transmission part.

[0052] It should be noted that when the movable seat 20 is embedded in the mounting groove, the first cover 25 is embedded in the mounting groove and closes the communication between the mounting groove and the drive cavity 13. The base 22 connected to the first cover 25 extends into the drive cavity 13, and the bottom of the base 22 is close to the first transmission part 11.

[0053] It is understood that by mounting the first cover 25 on the base 10, the base 22 is suspended in the first drive cavity 13 and close to the first transmission part 11. This allows the second transmission part 30, which passes through the ground of the base 22, to be close to and connected to the first transmission part 11. In this way, while ensuring the connection between the first transmission part 11 and the second transmission part 30, the distance between the bottom surface of the base 22 and the first transmission part 11 is minimized, thereby reducing the protrusion of the second transmission part 30. This effectively avoids the shaking of the second transmission part 30 during transmission and greatly reduces the generation of noise.

[0054] In one embodiment, the second transmission unit 30 includes a plurality of transmission shafts 31 and a plurality of first gears 32. The plurality of transmission shafts 31 are rotatably connected to the transmission space 33 and are spaced apart. Each transmission shaft 31 located in the transmission space 33 is connected to a first gear 32. Adjacent first gears 32 are interconnected. One of the two adjacent transmission shafts 31 extends to one side of the first transmission unit 11 and is connected to the first transmission unit 11.

[0055] like Figure 5 As shown, multiple transmission shafts 31 are spaced apart within the transmission space 33, and each transmission shaft 31 is provided with a first gear portion 32, with adjacent first gear portions 32 meshing with each other.

[0056] Thus, when one of the drive shafts 31 rotates, the remaining drive shafts 31 rotate through the transmission of the plurality of first gears 32.

[0057] Furthermore, the remaining first gear sections 32 that mesh with one of the first gear sections 32 rotate in the same direction.

[0058] It is understood that all the drive shafts 31 that rotate in the first direction extend out of the base 22 and are connected to the fourth drive unit, while all the drive shafts 31 that rotate in the second direction are located within the drive space 33.

[0059] like Figure 6 As shown, a plurality of the drive shafts 31 are arranged in a row within the drive space 33.

[0060] In one embodiment, the second transmission part 30 includes an eccentric part, and the second transmission part 30 is partially inserted through the first cover 25. The eccentric part is provided on the part of the second transmission part 30 that is inserted through the first cover 25. A paddle part is connected to the eccentric part so that the paddle part can move on the surface of the base 10.

[0061] It should be noted that the paddle needs to move on the base 10 to complete the actions required during the operation of the sewing machine.

[0062] It is understood that the eccentric part is connected to one end of the transmission shaft 31 that extends out of the first cover 25, so that the paddle part connected to the eccentric part drives the eccentric part to move during the rotation of the transmission shaft 31, thereby realizing the movement of the paddle part.

[0063] In one embodiment, in order to ensure the stability of the paddle part running on the surface of the base 10, all the drive shafts 31 that rotate in the first direction are connected to the eccentric part at one end extending from the first cover 25, and all the eccentric parts are connected to the paddle part, so that the paddle part can be stably moved by the support of the paddle part by the multiple eccentric parts.

[0064] Furthermore, the plurality of eccentric portions are arranged along the direction of the array of the plurality of drive shafts 31.

[0065] In one embodiment, a drive shaft 31 extends through the first cover 25 at one end and is connected to the eccentric portion;

[0066] Alternatively, one end of one of the two adjacent drive shafts 31 passes through the first cover 25 and is connected to the eccentric portion.

[0067] In one embodiment, the eccentric portion includes a third gear portion 35 and a bearing portion 34. The third gear portion 35 is connected to one end of the transmission shaft 31, and the rotation center of the bearing portion 34 is connected to the center of the third gear portion 35 and is offset from the transmission shaft 31.

[0068] like Figure 5 As shown, the first cover 25 has a rotating cavity 36 with an opening facing away from the transmission space 33. One end of the transmission shaft 31 extends into the rotating cavity 36 and is connected to the third gear part 35. The first cover 25 is also connected to a third cover 24 to restrict the third gear part 35 within the rotating cavity 36. The third cover 24 has a driven groove, which is projected onto the third gear part 35.

[0069] It is understood that the third gear 35 is disposed in the rotating cavity 36 and is restricted by the third cover 24 to ensure the stability of the movement of the third gear 35 within the movable seat 20.

[0070] It is understandable that the third cover 24 is provided with a driven groove to facilitate the rotation center of the bearing part 34 to rotate with the third gear part 35.

[0071] Furthermore, the rotation center of the bearing portion 34 is offset from the transmission shaft 31, so that during the process of the transmission shaft 31 driving the third gear portion 35 to rotate, the bearing portion 34 deviates from the rotation center and changes its movement path, thereby driving the paddle portion to move through the offset movement of the bearing portion 34.

[0072] It should be noted that, in order to avoid interference between the movement of the third cover 24 and the paddle part, a gap is provided between the paddle part and the third cover 24.

[0073] In one embodiment, the bearing portion 34 includes a first rotating portion, a second rotating portion, and a bearing shaft. The first rotating portion is sleeved on the second rotating portion and is arranged around the side of the second rotating portion. A plurality of rolling portions are arranged between the first rotating portion and the second rotating portion. The bearing shaft is connected to the second rotating portion. The bearing shaft is connected to the surface of the third gear portion 35 and is offset from the transmission shaft 31.

[0074] The bearing portion 34 is connected to the paddle portion, and the first rotating portion is fixedly connected to the paddle portion. The bearing shaft extends out of the paddle portion and is connected to the surface of the third gear portion 35.

[0075] It is understood that the bearing part 34 is a bearing, and a plurality of rolling parts are provided between the first rotating part and the second rotating part, so that when the first rotating part is fixed, the second rotating part can rotate with the assistance of the rolling parts.

[0076] Therefore, when the third gear is driven to rotate, it drives the second transmission part to move, thereby facilitating the movement of the paddle part.

[0077] In one embodiment, the paddle part includes a second cover 23 and a paddle body 21. The second cover 23 is connected to the paddle body 21, and the second cover 23 and the paddle body 21 together form a bearing space. The eccentric part is disposed in the bearing space.

[0078] The first rotating part is connected to the paddle body 21, and both the first rotating part and the second rotating part abut against the second cover 23.

[0079] It is understood that the second cover 23 is connected to the paddle body 21, and the second cover 23 and the paddle body 21 together form a restricted space. The first rotating part is connected to the paddle body 21, and the second rotating part is rotatably connected within the restricted space. A plurality of rolling parts are provided between the first rotating part and the second rotating part, so that under the restriction of the second cover 23 and the paddle body 21, the bearing part 34 supports the paddle part on the third cover 24, and facilitates the movement of the paddle part.

[0080] This utility model also proposes a split-type shuttleless sewing machine for four-sided sewing. The split-type shuttleless sewing machine for four-sided sewing includes the sewing machine base 100. The specific structure of the sewing machine base 100 is as described in the above embodiments. Since this split-type shuttleless sewing machine for four-sided sewing adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0081] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A sewing machine base, characterized in that, include: The base is integrally formed, and a first transmission part is provided inside the base; A movable seat is detachably connected to the base. The movable seat is provided with a second transmission part, which extends into the base and is located on one side of the first transmission part. The second transmission part extending into the base is connected to the first transmission part.

2. The sewing machine base as described in claim 1, characterized in that, The base surface is provided with a mounting groove adapted to the movable seat, the movable seat is installed in the mounting groove, the movable seat extends into the base and is close to the first transmission part; The second transmission part, which is disposed within the movable seat, extends out of the movable seat and is connected to the first transmission part.

3. The sewing machine base as described in claim 2, characterized in that, The movable seat includes a base and a first cover. The first cover is connected to the base, and the first cover and the base together form a transmission space. A second transmission part is disposed in the transmission space. The second transmission part partially penetrates the base and is connected to the first transmission part. The first cover is embedded in the mounting groove, and the base connected to the first cover extends into the base and is close to the first transmission part to reduce the distance between the base and the first transmission part.

4. The sewing machine base as described in claim 3, characterized in that, The second transmission unit includes multiple transmission shafts and multiple first gears. The multiple transmission shafts are rotatably connected to the transmission space and are spaced apart. Each transmission shaft in the transmission space is connected to a first gear. Adjacent first gears are interconnected. One of the two adjacent transmission shafts extends to one side of the first transmission unit and is connected to the first transmission unit.

5. The sewing machine base as described in claim 3, characterized in that, The second transmission part includes an eccentric part, and the second transmission part is partially inserted through the first cover. The eccentric part is provided on the part of the second transmission part that is inserted through the first cover. A lever part is connected to the eccentric part so that the lever part can move on the surface of the base.

6. The sewing machine base as described in claim 5, characterized in that, One end of a drive shaft passes through the first cover and is connected to the eccentric part; Alternatively, one end of one of the two adjacent drive shafts passes through the first cover and is connected to the eccentric portion.

7. The sewing machine base as described in claim 6, characterized in that, The eccentric part includes a third gear part and a bearing part. The third gear part is connected to one end of the transmission shaft, and the rotation center of the bearing part is connected to the center of the third gear part and is offset from the transmission shaft.

8. The sewing machine base as described in claim 7, characterized in that, The bearing portion includes a first rotating portion, a second rotating portion, and a bearing shaft. The first rotating portion is sleeved on the second rotating portion and is arranged around the side of the second rotating portion. A plurality of rolling portions are arranged between the first rotating portion and the second rotating portion. The bearing shaft is connected to the second rotating portion and is connected to the surface of the third gear portion. The bearing shaft is offset from the transmission shaft. The bearing portion is connected to the paddle portion, and the first rotating portion is fixedly connected to the paddle portion. The bearing shaft extends out of the paddle portion and is connected to the surface of the third gear portion.

9. The sewing machine base as described in claim 8, characterized in that, The paddle part includes a second cover and a paddle body. The second cover is connected to the paddle body, and the second cover and the paddle body together form a bearing space. The eccentric part is disposed within the bearing space. The first rotating part is connected to the paddle body, and both the first rotating part and the second rotating part abut against the second cover.

10. A split-type shuttleless sewing machine for four-sided sewing, characterized in that, Includes a sewing machine base as described in any one of claims 1 to 9.

Images