Sewing machine bobbin case installation device easy to disassemble and assemble

Abstract

The utility model relates to a sewing machine bobbin case installation device easy to disassemble and assemble, and relates to the technical field of sewing machinery, the sewing machine bobbin case installation device easy to disassemble and assemble comprises a base, the base is installed on a sewing machine, the base is provided with an assembling mechanism used for installing a bobbin case, and the assembling mechanism comprises an assembling column, an assembling plate and a moving assembly. The moving assembly drives the assembling plate to move, the assembling plate pushes the bobbin case to move until the bobbin case is pushed out of the base, and therefore a user only needs to place the hand below the base to wait for the bobbin case to fall off, manual force application for grabbing is not needed, and the bobbin case grabbing device is simple, convenient to use and high in working efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of sewing machines, and in particular to an easily detachable bobbin case mounting device for a sewing machine. Background Art

[0002] The bobbin case is a key component within a sewing machine, responsible for loading the thread and forming the loops. It's typically made of metal or high-strength plastic, offering wear and impact resistance to ensure stability and durability even at high speeds. The bobbin case houses the bobbin, which is wound with sewing thread. As the sewing machine operates, the bobbin rotates within the bobbin holder, forming a loop with the needle and thread, completing the stitching process.

[0003] When the sewing thread on the bobbin is used up, the bobbin case needs to be removed from the bobbin case seat, and the bobbin needs to be replaced or rewound. When removing the bobbin case from the bobbin case seat, the user usually buckles the small iron piece on the bobbin case and then pulls the bobbin case out of the bobbin case seat.

[0004] However, since the bobbin case itself is small in size, the small iron piece on the bobbin case is difficult to grasp, and the space for the user's hand to reach into the sewing machine is limited, it is inconvenient for the user to remove the bobbin case. Even after the bobbin case is pulled out of the bobbin case seat, the bobbin case is more likely to fall into the sewing machine, which requires the user to spend a long time on the disassembly and assembly of the bobbin case, which is not conducive to improving the efficiency of sewing work. Utility Model Content

[0005] In order to improve the efficiency of disassembling and assembling a bobbin case, the present application provides an easily disassemblyable bobbin case installation device for a sewing machine.

[0006] The present application provides a sewing machine bobbin case installation device that is easily detachable and assembled, which adopts the following technical solutions:

[0007] A sewing machine easily detachable bobbin case installation device comprises a base, the base is installed on the sewing machine, and an assembly mechanism for installing the bobbin case is provided on the base, the assembly mechanism comprising:

[0008] An assembly column, wherein the assembly column is arranged on the base, and the bobbin case is slidably sleeved on the assembly column along the axial direction of the assembly column;

[0009] An assembly plate, which is slidably sleeved on the assembly post along the axial direction of the assembly post and contacts the bobbin case;

[0010] The moving component is arranged on the base and is used for driving the assembly plate to move.

[0011] By adopting the above technical solution, the assembly plate is driven to move by the moving component, and the assembly plate pushes the bobbin case to move until the bobbin case is pushed out from the base, so that the user only needs to put his hand under the base and wait for the bobbin case to fall, without the need for manual force to grab it, which is simple, convenient and efficient.

[0012] Optionally, the mobile component includes:

[0013] A moving spring, the moving spring being arranged on the base and connected to the assembly plate, the assembly plate being acted upon by the moving spring to push the bobbin case out of the base;

[0014] A limiting member is provided on the base and is used to limit the position of the assembly plate when the spring is compressed and moved.

[0015] By adopting the above technical solution, when the bobbin case is placed in the base, the assembly plate compresses the movable spring under the action of the limit member and the position is fixed. When the bobbin case needs to be moved out, the limit member is unlocked, and the assembly plate pushes the bobbin case to move under the action of the restoring force of the movable spring, thereby realizing the movement of the bobbin case position.

[0016] Optionally, the limiting member includes:

[0017] A limit block, wherein a horizontal sliding groove is provided on the inner side wall of the base, and the limit block is slidably mounted on the sliding groove;

[0018] A limit spring, the limit spring being arranged on the bottom wall of the sliding groove and connected to the limit block, wherein the limit block partially passes out of the sliding groove and contacts the surface of the assembly plate under the action of the limit spring;

[0019] A moving rod is slidably mounted on the base along the sliding direction of the limit block, one end of the moving rod is located outside the base, and the other end of the moving rod extends into the sliding groove and is connected to the limit block.

[0020] By adopting the above technical solution, when the bobbin case is in the base, the limit block partially passes through the sliding groove under the action of the limit spring and contacts the surface of the assembly plate, thereby limiting the assembly plate in the bottom of the base. When the bobbin case needs to be moved out, the moving rod is pulled to make the limit block compress the limit spring and move until the limit block is moved into the sliding groove as a whole. After the limit block is moved into the sliding groove as a whole, it is disengaged from the assembly plate, thereby releasing the limiting work on the assembly plate position, so that the assembly plate can push the bobbin case out of the base.

[0021] Optionally, the base is provided with a blocking mechanism for blocking the bobbin case from moving out of an opening on one side of the base, and the blocking mechanism includes:

[0022] a blocking plate, the blocking plate being rotatably disposed on the base;

[0023] A rotating torsion spring, the rotating torsion spring being arranged on the base and connected to the blocking plate, the blocking plate blocking the base opening under the action of the rotating torsion spring;

[0024] A driving assembly is provided on the base and is used for driving the blocking plate to rotate.

[0025] By adopting the above technical solution, when the bobbin case is located in the base, the blocking plate blocks the opening of the base under the action of the rotating torsion spring, thereby limiting the bobbin case on the base, reducing the probability of the bobbin case being shaken out of the base by the vibration generated when the sewing machine is working. When the bobbin case needs to be removed, the driving assembly can be used to rotate the blocking plate from the opening of the base, which is convenient and quick, and has high work efficiency.

[0026] Optionally, the driving component includes:

[0027] A driving rod, the driving rod being slidably mounted on the base along the moving direction of the bobbin case, one end of the driving rod being located in the sliding groove, and the other end of the driving rod being in contact with the blocking plate;

[0028] The driving block is arranged on the driving rod and located in the sliding groove. The driving block is provided with an inclined chamfer, and the chamfer conflicts with the limit block. When the limit block compresses the limit spring and moves, the driving block drives the driving rod to move under the action of the limit block, and the movement of the driving rod drives the blocking plate to rotate.

[0029] By adopting the above technical solution, a driving block is provided on the driving rod, so that when the moving rod is pulled to drive the limit block to compress the limit spring, the movement of the limit block will also drive the driving block to move, the movement of the driving block drives the driving rod to move, and the movement of the driving rod drives the blocking plate to rotate, so that the limiting work of the assembly plate can be unlocked by simply pulling the moving rod, and when the moving rod is pulled to drive the limit block to move, the blocking plate is also rotated to open the base opening, so that the bobbin case can be smoothly moved out of the base, simplifying the operation and improving work efficiency.

[0030] Optionally, an arc-shaped guide surface is provided on a side wall of one end of the limiting block that passes through the sliding groove and is close to the opening of the base.

[0031] By adopting the above technical solution, an arc-shaped guide surface is provided on the side wall of one end of the limit block passing through the sliding groove and close to the base opening. Therefore, when the bobbin case moves into the base and drives the assembly plate to compress the limit spring to move, the assembly plate will first contact the guide surface, and the guide surface will generate a component force that drives the limit block to move into the sliding groove, thereby eliminating the need to manually pull the moving rod to keep the limit block in the limit groove, simplifying the working steps and improving work efficiency. By observing the movement of the moving rod, it is possible to understand whether the bobbin case has moved the assembly plate back to the specified position.

[0032] Optionally, a ball is rotatably provided on the blocking plate, and the ball contacts the bobbin case.

[0033] By adopting the above technical solution, a ball is rotatably installed on the blocking plate, and the ball contacts the bobbin case, thereby limiting the bobbin case in the base and reducing the friction generated when the blocking plate and the bobbin case are relatively displaced, thereby protecting the bobbin case and increasing the service life of the bobbin case.

[0034] In summary, this application includes at least one of the following beneficial technical effects:

[0035] 1. The assembly plate is driven by the moving component to move, and the assembly plate pushes the bobbin case to move until the bobbin case is pushed out of the base. The user only needs to place his hand under the base and wait for the bobbin case to fall. There is no need to manually apply force to grab it, which is simple, convenient and efficient.

[0036] 2. By arranging a driving block on the driving rod, when the moving rod is pulled to drive the limit block to compress the limit spring, the movement of the limit block also drives the movement of the driving block, which in turn drives the movement of the driving rod, which in turn drives the blocking plate to rotate. Therefore, when the limit on the assembly plate is unlocked by pulling the moving rod, the blocking plate is also rotated to open the base opening, allowing the bobbin case to be smoothly removed from the base, simplifying the operation and improving work efficiency.

[0037] 3. By rotating the ball bearing on the blocking plate, the ball bearing contacts the bobbin case, thereby limiting the bobbin case in the base and reducing the friction generated when the blocking plate and the bobbin case are relatively displaced, thereby protecting the bobbin case and increasing its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the three-dimensional structure of this application;

[0039] Figure 2 is a schematic structural diagram of the assembly mechanism and the blocking mechanism in the present application, wherein the side wall of the base and the side wall of the assembly column are cross-sectionally viewed;

[0040] Figure 3 yes Figure 2 Enlarged schematic diagram of part A in the middle.

[0041] Figure numerals: 1. base; 11. sliding groove; 12. guide surface; 13. chamfer; 2. assembly mechanism; 21. assembly column; 22. assembly plate; 23. moving component; 24. moving spring; 25. limit member; 26. limit block; 27. limit spring; 28. moving rod; 3. blocking mechanism; 31. blocking plate; 32. rotating torsion spring; 33. driving component; 34. driving rod; 35. driving block. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1 -Attached Figure 3 This application is described in further detail.

[0043] The embodiment of the present application discloses an easily detachable bobbin case installation device for a sewing machine.

[0044] Reference Figure 1 The sewing machine easily detachable bobbin case installation device comprises a base 1, which is installed on the sewing machine. The base 1 is provided with an assembly mechanism 2 for installing the bobbin case.

[0045] Reference Figure 1 and Figure 2 The assembly mechanism 2 comprises an assembly post 21, an assembly plate 22, and a moving assembly 23. The assembly post 21 is fixedly mounted on the inner bottom wall of the base 1, perpendicular to the inner bottom wall. The bobbin case slides over the assembly post 21. The assembly plate 22 slides axially along the assembly post 21 and contacts the bobbin case. The moving assembly 23 is mounted on the base 1 and is used to drive the assembly plate 22 to move.

[0046] Reference Figure 2 The moving assembly 23 includes a moving spring 24 and a stopper 25. One end of the moving spring 24 is fixedly mounted on the inner bottom wall of the base 1, and the other end of the moving spring 24 is connected to the assembly plate 22. The assembly plate 22 is urged by the moving spring 24 to push the bobbin case out of the base 1. The stopper 25 is mounted on the base 1 and is used to limit the position of the assembly plate 22 when the moving spring 24 is compressed.

[0047] Reference Figure 2 and Figure 3 The limiting member 25 includes a limiting block 26, a limiting spring 27 and a moving rod 28. A sliding groove 11 is provided on the inner side wall of the base 1. The limiting block 26 is slidably installed on the sliding groove 11. An arc-shaped guide surface 12 is provided on the side wall of the end of the limiting block 26 that passes through the sliding groove 11 and is close to the opening of the base 1. One end of the limiting spring 27 is fixedly connected to the inner bottom wall of the sliding groove 11, and the other end of the limiting spring 27 is fixedly connected to the limiting block 26. Under the action of the limiting spring 27, the limiting block 26 partially passes through the sliding groove 11 and contacts the surface of the assembly plate 22. The moving rod 28 is slidably installed on the base 1 along the sliding direction of the limiting block 26, one end of the moving rod 28 is located outside the base 1, and the other end of the moving rod 28 extends into the sliding groove 11 and is connected to the limiting block 26.

[0048] Reference Figure 2 and Figure 3When the bobbin case is located within the base 1, the limit block 26, under the action of the limit spring 27, partially extends out of the sliding groove 11 and contacts the surface of the assembly plate 22, thereby retaining the assembly plate 22 in the bottom of the base 1. To remove the bobbin case, the movable rod 28 is pulled, causing the limit block 26 to compress the limit spring 27 and move until the limit block 26 is completely inserted into the sliding groove 11. Once the limit block 26 is completely inserted into the sliding groove 11, it is disengaged from the assembly plate 22. After the limit block 26 is disengaged from the assembly plate 22, the assembly plate 22, under the action of the return force of the movable spring 24, pushes the bobbin case to move and push it out of the base 1. Therefore, the user only needs to place a hand under the base 1 and pull the movable rod 28 to drop the bobbin case into the base 1, eliminating the need for manual force to remove the bobbin case. This is simple, convenient, and highly efficient.

[0049] Reference Figure 1 and Figure 2 The base 1 is provided with a blocking mechanism 3 for preventing the bobbin case from exiting the opening on one side of the base 1. The blocking mechanism 3 comprises a blocking plate 31, a rotating torsion spring 32, and a driving assembly 33. The blocking plate 31 is rotatably mounted on one end surface of the base 1 at the opening. The rotating torsion spring 32 is fixedly mounted on the base 1 and is fixedly connected to the blocking plate 31. The blocking plate 31 blocks the opening of the base 1 under the action of the rotating torsion spring 32. The driving assembly 33 is provided on the base 1 and is used to drive the blocking plate 31 to rotate.

[0050] Reference Figure 2 and Figure 3 The drive assembly 33 includes a drive rod 34 and a drive block 35. The drive rod 34 is slidably mounted on the base 1 along the moving direction of the bobbin case. One end of the drive rod 34 is located in the sliding groove 11, and the other end of the drive rod 34 abuts against the blocking plate 31. The drive block 35 is fixedly mounted on the end of the drive rod 34 located in the sliding groove 11. The drive block 35 is provided with an inclined chamfer 13, which abuts against the side of the limit block 26 away from the assembly plate 22. When the limit block 26 compresses the limit spring 27 and moves, the drive block 35 drives the drive rod 34 to move under the action of the limit block 26, and the movement of the drive rod 34 drives the blocking plate 31 to rotate. A ball is rotatably mounted on the side wall of the blocking plate 31 close to the bobbin case, and the ball abuts against the bobbin case.

[0051] Reference Figure 2 and Figure 3When the bobbin case is located in the base 1, the blocking plate 31 blocks the opening of the base 1 under the action of the rotating torsion spring 32, thereby retaining the bobbin case on the base 1 and reducing the probability of the bobbin case being shaken out of the base 1 by the vibration generated by the sewing machine during operation. When the bobbin case needs to be removed, the movable rod 28 is pulled. As the movable rod 28 moves, the limiting block 26 compresses the limiting spring 27. The movement of the limiting block 26 also drives the driving block 35 to move. The movement of the driving block 35 drives the driving rod 34 to move. The movement of the driving rod 34 drives the blocking plate 31 to rotate. Under the action of the driving rod 34, the blocking plate 31 rotates away from the opening of the base 1, allowing the bobbin case to be smoothly removed from the base 1.

[0052] The working principle of the embodiment of this application is as follows:

[0053] When the bobbin case is within the base 1, the limit block 26, under the action of the limit spring 27, partially extends out of the sliding groove 11 and contacts the surface of the assembly plate 22, thereby retaining the assembly plate 22 in the bottom of the base 1. To remove the bobbin case, the movable rod 28 is pulled, causing the limit block 26 to compress the limit spring 27 and move until the limit block 26 is completely inserted into the sliding groove 11. Once the limit block 26 is completely inserted into the sliding groove 11, it disengages from the assembly plate 22. After the limit block 26 is disengaged from the assembly plate 22, the assembly plate 22, under the action of the return force of the movable spring 24, pushes the bobbin case to move and release it from the base 1. Therefore, the user simply places a hand under the base 1 and pulls the movable rod 28 to drop the bobbin case into the base 1, eliminating the need for manual gripping. This is simple, convenient, and highly efficient.

[0054] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A sewing machine bobbin case installation device that is easily detachable, characterized in that: The invention comprises a base (1), wherein the base (1) is mounted on a sewing machine, and an assembly mechanism (2) for mounting a bobbin case is provided on the base (1), wherein the assembly mechanism (2) comprises: An assembly column (21), wherein the assembly column (21) is arranged on the base (1), and the bobbin case is axially slidably sleeved on the assembly column (21) along the assembly column (21); An assembly plate (22), the assembly plate (22) is axially slidably sleeved on the assembly column (21) along the assembly column (21) and contacts the bobbin case; A moving component (23) is provided on the base (1) and is used to drive the assembly plate (22) to move.

2. The easily detachable bobbin case installation device for a sewing machine according to claim 1, characterized in that: The mobile component (23) comprises: A movable spring (24), wherein the movable spring (24) is arranged on the base (1) and connected to the assembly plate (22), and the assembly plate (22) pushes the bobbin case out of the base (1) under the action of the movable spring (24); A limiting member (25) is provided on the base (1), and the limiting member (25) is used to limit the position of the assembly plate (22) when compressing the moving spring (24).

3. The easily detachable bobbin case installation device for a sewing machine according to claim 2, characterized in that: The limiting member (25) includes: A limit block (26), wherein a horizontal sliding groove (11) is provided on the inner side wall of the base (1), and the limit block (26) is slidably mounted on the sliding groove (11); A limit spring (27), wherein the limit spring (27) is arranged on the inner bottom wall of the sliding groove (11) and is connected to the limit block (26); under the action of the limit spring (27), the limit block (26) partially passes through the outside of the sliding groove (11) and contacts the surface of the assembly plate (22); A moving rod (28) is mounted on the base (1) so as to slide along the sliding direction of the limit block (26), one end of the moving rod (28) is located outside the base (1), and the other end of the moving rod (28) extends into the sliding groove (11) and is connected to the limit block (26).

4. The easily detachable bobbin case installation device for a sewing machine according to claim 3, characterized in that: The base (1) is provided with a blocking mechanism (3) for blocking the bobbin case from moving out of an opening on one side of the base (1), and the blocking mechanism (3) comprises: a blocking plate (31), the blocking plate (31) being rotatably disposed on the base (1); A rotating torsion spring (32), the rotating torsion spring (32) being arranged on the base (1) and connected to the blocking plate (31), the blocking plate (31) blocking the opening of the base (1) under the action of the rotating torsion spring (32); A driving assembly (33) is provided on the base (1) and is used to drive the blocking plate (31) to rotate.

5. The easily detachable bobbin case installation device for a sewing machine according to claim 4, characterized in that: The driving assembly (33) comprises: A driving rod (34), wherein the driving rod (34) is slidably mounted on the base (1) along the moving direction of the bobbin case, one end of the driving rod (34) is located in the sliding groove (11), and the other end of the driving rod (34) is in contact with the blocking plate (31); A driving block (35) is provided on the driving rod (34) and is located in the sliding groove (11). An inclined chamfer (13) is provided on the driving block (35). The chamfer (13) contacts the limit block (26). When the limit block (26) compresses the limit spring (27) and moves, the driving block (35) drives the driving rod (34) to move under the action of the limit block (26). The movement of the driving rod (34) drives the blocking plate (31) to rotate.

6. The easily detachable bobbin case installation device for a sewing machine according to claim 5, characterized in that: An arc-shaped guide surface (12) is provided on a side wall of one end of the limit block (26) extending out of the sliding groove (11) and close to the opening of the base (1).

7. The easily detachable bobbin case installation device for a sewing machine according to claim 4, characterized in that: A ball is rotatably provided on the blocking plate (31), and the ball contacts the bobbin case.

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