A connection structure between the upper shaft of a sewing machine and the output shaft of a motor.

Abstract

This utility model provides a connection structure between the upper shaft of a sewing machine and the output shaft of a motor, belonging to the technical field of sewing equipment. This connection structure includes an upper shaft of the sewing machine and an output shaft of the motor. The outer end of the output shaft has a mounting groove, and one or more through slots are formed on the wall of the mounting groove, extending from the inside to the outside. The upper shaft is inserted into the mounting groove, and a fastener is provided at the connection point between the upper shaft and the mounting groove to press the groove wall of the mounting groove onto the upper shaft. In this connection structure, the upper shaft and the output shaft are inserted into each other, and the fasteners press the groove wall of the mounting groove onto the upper shaft, ensuring full contact at the connection point. This structure provides a stable connection and is easy to install.

Description

Technical Field

[0001] This utility model belongs to the field of sewing equipment technology, and relates to a connection structure between the upper shaft of a sewing machine and the output shaft of a motor. Background Technology

[0002] Sewing machines are powered by an electric motor. Existing sewing machines typically use a coupling to connect the motor shaft and the machine spindle. This process involves grinding the coupling to the appropriate size and drilling holes, then fitting the coupling onto the machine spindle, connecting the motor shaft to the coupling, and securing it with screws. This connection method is complex to install.

[0003] To solve the above-mentioned technical problems, patent document with application number 201721096935.X provides a connection structure between a sewing machine shaft and a motor shaft. It includes a sewing machine main shaft and a motor shaft. The sewing machine main shaft has a flat groove on one side, and the motor shaft has a screw hole one on one side and a screw hole two on the other side at a position perpendicular to the screw hole one. The motor shaft is sleeved into the sewing machine main shaft. The screw hole one corresponds to the flat groove. A screw passes through the screw hole one and uses the flat groove to fix the sewing machine main shaft and the motor shaft. Another screw passes through the screw hole two to fix them.

[0004] In the above-mentioned connection mechanism, the two shafts are fixed only by screws, which is not strong enough. Summary of the Invention

[0005] This utility model addresses the aforementioned problems in the prior art by providing a connection structure between the upper shaft of a sewing machine and the output shaft of a motor. The technical problem to be solved by this utility model is: how to improve the stability of the connection.

[0006] The objective of this utility model can be achieved through the following technical solutions: A connection structure between the upper shaft of a sewing machine and the output shaft of a motor, the connection structure including the upper shaft of the sewing machine and the output shaft of the motor, characterized in that the outer end of the output shaft has a mounting groove, the groove wall of the mounting groove has one or more through grooves, the through grooves penetrate the groove wall of the mounting groove and extend from the inside to the outside, the upper shaft is inserted into the mounting groove, and a fastener is provided at the connection between the upper shaft and the mounting groove for pressing the groove wall of the mounting groove onto the upper shaft; Alternatively, the outer end of the upper shaft may have a mounting groove, and one or more through grooves may be provided on the groove wall of the mounting groove. The through grooves extend from the inside to the outside. The output shaft is inserted into the mounting groove, and a fastener is provided at the connection between the output shaft and the mounting groove to press the groove wall of the mounting groove onto the output shaft.

[0007] In this connection structure, the upper shaft is inserted into the mounting groove of the output shaft. A through groove is provided on the groove wall of the mounting groove. The through groove extends from the inside to the outside through the groove wall of the mounting groove. The fastener presses the groove wall of the mounting groove, and the groove wall of the mounting groove undergoes a certain elastic deformation and presses against the outer wall of the upper shaft, thereby facilitating the fixing of the output shaft and the upper shaft.

[0008] The upper shaft and the output shaft of this connection structure are inserted into each other, and the groove wall of the mounting groove is pressed against the upper shaft by fasteners, so that the connection between the upper shaft and the output shaft is in full contact. This structure is stable and easy to install.

[0009] Furthermore, by adopting this connection structure, the crank and connecting rod mechanism can be installed on the upper shaft of the sewing machine first, and then the upper shaft can be fixed to the output shaft of the motor by fasteners, which improves the ease of installation.

[0010] In another embodiment, a mounting groove is formed at the outer end of the upper shaft, the output shaft of the motor is inserted into the mounting groove of the upper shaft, and a fastener is provided at the connection between the output shaft and the mounting groove, the fastener pressing the groove wall of the mounting groove onto the output shaft.

[0011] In the above-mentioned connection structure between the upper shaft of a sewing machine and the output shaft of a motor, the fastener includes a clamping block, the clamping block has a receiving groove, the clamping block has an opening communicating with the receiving groove, the output shaft is inserted into the receiving groove, and screws are threadedly connected to the upper and lower walls of the opening, and the groove wall of the receiving groove presses the groove wall of the mounting groove against the upper shaft.

[0012] When the screw is tightened, the upper and lower walls of the opening on the clamping block approach each other, causing the receiving groove to gradually shrink until the groove wall of the receiving groove presses against the outside of the mounting groove, and the groove wall of the mounting groove presses against the outer wall of the upper shaft. While the clamping block is fastened to the output shaft, the output shaft and the upper shaft are also clamped and fixed. This structure has a stable connection and is easy to disassemble and assemble.

[0013] In another embodiment, when the mounting groove is opened at the outer end of the upper shaft and the output shaft of the motor is inserted into the mounting groove of the upper shaft, the upper shaft is inserted into the receiving groove. Screws are threaded on the upper and lower walls of the opening, and the groove wall of the receiving groove presses the groove wall of the mounting groove against the output shaft.

[0014] In the above-mentioned connection structure between the upper shaft of a sewing machine and the output shaft of a motor, the outer end of the upper shaft has a connecting shaft, the connecting shaft is inserted into the mounting groove, and the outer end of the upper shaft abuts against the outer end of the output shaft.

[0015] In this structure, the upper shaft is connected and fixed to the output shaft via a connecting shaft. When the outer end of the upper shaft abuts against the outer end of the output shaft, the two will not move relative to each other in the axial direction, thus achieving good positioning.

[0016] In the above-mentioned connection structure between the upper shaft of a sewing machine and the output shaft of a motor, a gasket is provided at the opening of the receiving groove, and the outer end of the upper shaft and the outer end of the output shaft abut against one side and the other side of the gasket, respectively.

[0017] When the outer ends of the upper shaft and the output shaft abut against one side and the other side of the shim respectively, they will not move relative to each other in the axial direction. This structure provides good positioning through the shim, improving the accuracy and firmness of the installation.

[0018] In the above-mentioned connection structure between the upper shaft of a sewing machine and the output shaft of a motor, there are two or more through slots that extend along the axial direction of the output shaft, and the through slots are evenly distributed on the groove wall of the mounting groove.

[0019] There are two or more through slots. The more through slots there are, the easier it is for the groove wall to deform when squeezed, and the easier it is for the groove wall to be pressed tightly against the upper shaft, thus improving the ease of installation.

[0020] The through grooves are evenly distributed on the wall of the mounting groove, so that the force is more balanced after the wall of the mounting groove is compressed.

[0021] In the above-mentioned connection structure between the upper shaft of a sewing machine and the output shaft of a motor, there are two through slots, which are arranged opposite to each other.

[0022] In the above-mentioned connection structure between the upper shaft of a sewing machine and the output shaft of a motor, the through groove extends to the outer end of the groove wall of the mounting groove.

[0023] The outside of the through groove is open, and the through groove passes through the outer end of the mounting groove wall. When compressed, the groove wall of the mounting groove is more likely to undergo elastic deformation, making it easier to press the groove wall tightly against the upper shaft, which greatly improves the ease of installation.

[0024] Compared with the prior art, the advantages of this utility model are as follows: 1. The upper shaft and the output shaft of this connection structure are inserted into each other, and the groove wall of the mounting groove is pressed against the upper shaft by fasteners, so that the connection between the upper shaft and the output shaft is in full contact. This structure is stable and easy to install.

[0025] 2. With this connection structure, the crank and connecting rod mechanism can be installed on the upper shaft of the sewing machine first, and then the upper shaft can be fixed to the output shaft of the motor by fasteners, which improves the ease of installation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the connection structure; Figure 2 yes Figure 1 Enlarged view of part A in the image; Figure 3 This is a schematic diagram of the output shaft; Figure 4 This is a schematic diagram of the upper shaft structure; Figure 5 This is a schematic diagram of the clamping block.

[0027] In the diagram: 1 Upper shaft, 2 Output shaft, 3 Mounting slot, 4 Through slot, 5 Fastener, 6 Clamping block, 7 Receiving slot, 8 Opening, 9 Upper wall, 10 Lower wall, 11 Screw, 12 Connecting shaft, 13 Washer, 14 Motor. Detailed Implementation

[0028] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] like Figure 1-3 As shown, this connection structure includes an upper shaft 1 of a sewing machine and an output shaft 2 of a motor 14. The outer end of the output shaft 2 has a mounting groove 3. A through groove 4 is provided on the groove wall of the mounting groove 3. There can be one or more through grooves 4. The through groove 4 penetrates the groove wall of the mounting groove 3 and extends from the inside to the outside. The upper shaft 1 is inserted into the mounting groove 3. A fastener 5 is provided at the connection between the upper shaft 1 and the mounting groove 3 to press the groove wall of the mounting groove 3 onto the upper shaft 1.

[0030] In this connection structure, the upper shaft 1 is inserted into the mounting groove 3 of the output shaft 2. A through groove 4 is provided on the groove wall of the mounting groove 3. The through groove 4 penetrates the groove wall of the mounting groove 3 and extends from the inside to the outside. The fastener 5 presses the groove wall of the mounting groove 3. Due to the design of the through groove 4, the groove wall of the mounting groove 3 can generate a certain elastic deformation and press against the outer wall of the upper shaft 1, thereby conveniently fixing the output shaft 2 and the upper shaft 1 together.

[0031] The upper shaft 1 and the output shaft 2 of this connection structure are inserted into each other, and the groove wall of the mounting groove 3 is pressed against the upper shaft 1 by the fastener 5, so that the connection between the upper shaft 1 and the output shaft 2 is fully contacted. This structure is stable and easy to install.

[0032] Furthermore, by adopting this connection structure, the crank and connecting rod mechanism can be installed on the upper shaft 1 of the sewing machine first, and then the upper shaft 1 can be fixed to the output shaft 2 of the motor 14 by fasteners 5, which improves the ease of installation.

[0033] In another embodiment, the mounting groove 3 is opened at the outer end of the upper shaft 1, and the output shaft 2 of the motor 14 is inserted into the mounting groove 3 of the upper shaft 1. A fastener 5 is provided at the connection between the output shaft 2 and the mounting groove 3, and the fastener 5 presses the groove wall of the mounting groove 3 onto the output shaft 2.

[0034] like Figure 2 and 5As shown, in this embodiment, the fastener 5 includes a clamping block 6, the clamping block 6 has a receiving groove 7, the clamping block 6 has an opening 8 that communicates with the receiving groove 7, the output shaft 2 is inserted into the receiving groove 7, and screws 11 are threadedly connected to the upper wall 9 and lower wall 10 of the opening 8, and the groove wall of the receiving groove 7 presses the groove wall of the mounting groove 3 against the upper shaft 1.

[0035] When screw 11 is tightened, the upper wall 9 and lower wall 10 of the opening 8 on the clamping block 6 approach each other, causing the receiving groove 7 to gradually shrink until the groove wall of the receiving groove 7 presses against the outside of the mounting groove 3, so that the groove wall of the mounting groove 3 presses against the outer wall of the upper shaft 1. While the clamping block 6 is fastened to the output shaft 2, the output shaft 2 and the upper shaft 1 are also clamped and fixed. This structure is stable and easy to disassemble and assemble.

[0036] In another embodiment, when the mounting groove 3 is opened at the outer end of the upper shaft 1 and the output shaft 2 of the motor 14 is inserted into the mounting groove 3 of the upper shaft 1, the upper shaft 1 is inserted into the receiving groove 7. The upper wall 9 and lower wall 10 of the opening 8 are threaded with screws 11, and the groove wall of the receiving groove 7 presses the groove wall of the mounting groove 3 against the output shaft 2.

[0037] like Figure 3 and 4 As shown, in this embodiment, the outer end of the upper shaft 1 has a connecting shaft 12, which is inserted into the mounting groove 3, and the outer end of the upper shaft 1 abuts against the outer end of the output shaft 2.

[0038] In this structure, the upper shaft 1 is connected and fixed to the output shaft 2 via the connecting shaft 12. When the outer end of the upper shaft 1 abuts against the outer end of the output shaft 2, the two will not move relative to each other in the axial direction, thus achieving good positioning.

[0039] like Figure 2 As shown, in this embodiment, a gasket 13 is provided at the opening of the receiving groove 7, and the outer end of the upper shaft 1 and the outer end of the output shaft 2 abut against one side and the other side of the gasket 13, respectively.

[0040] When the outer ends of the upper shaft 1 and the output shaft 2 abut against one side and the other side of the shim 13 respectively, they will not move relative to each other in the axial direction. This structure provides good positioning through the shim 13, improving the accuracy and firmness of the installation.

[0041] Preferably, there are two or more through slots 4 that extend along the axial direction of the output shaft 2, and the through slots 4 are evenly distributed on the wall of the mounting slot 3.

[0042] There are two or more through grooves 4. The more through grooves 4 there are, the easier it is for the groove wall of the mounting groove 3 to deform when it is squeezed, and the easier it is for the groove wall to be pressed tightly against the upper shaft 1, thus improving the ease of installation.

[0043] The through grooves 4 are evenly distributed on the groove wall of the mounting groove 3, so that the groove wall of the mounting groove 3 is compressed and the force is more balanced.

[0044] like Figure 3 As shown, in this embodiment, there are two through slots 4, which are arranged opposite to each other.

[0045] like Figure 3 As shown, in this embodiment, the through groove 4 extends to the outer end of the groove wall of the mounting groove 3.

[0046] The outer side of the through groove 4 is open, and the through groove 4 passes through the outer end of the groove wall of the mounting groove 3. When squeezed, the groove wall of the mounting groove 3 is more likely to produce elastic deformation, making it easier for the groove wall to be pressed tightly against the upper shaft 1, which greatly improves the ease of installation.

[0047] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A connection structure between the upper shaft of a sewing machine and the output shaft of a motor, the connection structure comprising the upper shaft (1) of the sewing machine and the output shaft (2) of the motor (14), characterized in that, The outer end of the output shaft (2) has a mounting groove (3), and one or more through grooves (4) are opened on the groove wall of the mounting groove (3). The through grooves (4) penetrate the groove wall of the mounting groove (3) and extend from the inside to the outside. The upper shaft (1) is inserted into the mounting groove (3). A fastener (5) is provided at the connection between the upper shaft (1) and the mounting groove (3) to press the groove wall of the mounting groove (3) onto the upper shaft (1). Alternatively, the outer end of the upper shaft (1) has a mounting groove (3), and one or more through grooves (4) are provided on the groove wall of the mounting groove (3). The through grooves (4) penetrate the groove wall of the mounting groove (3) and extend from the inside to the outside. The output shaft (2) is inserted into the mounting groove (3). A fastener (5) is provided at the connection between the output shaft (2) and the mounting groove (3) to press the groove wall of the mounting groove (3) onto the output shaft (2).

2. The connection structure between the upper shaft of a sewing machine and the output shaft of a motor according to claim 1, characterized in that, The fastener (5) includes a clamping block (6), which has a receiving groove (7) and an opening (8) communicating with the receiving groove (7). The output shaft (2) is inserted into the receiving groove (7). Screws (11) are threaded onto the upper wall (9) and lower wall (10) of the opening (8). The groove wall of the receiving groove (7) presses the groove wall of the mounting groove (3) against the upper shaft (1).

3. The connection structure between the upper shaft of a sewing machine and the output shaft of a motor according to claim 1 or 2, characterized in that, The outer end of the upper shaft (1) has a connecting shaft (12), which is inserted into the mounting groove (3), and the outer end of the upper shaft (1) abuts against the outer end of the output shaft (2).

4. The connection structure between the upper shaft of a sewing machine and the output shaft of a motor according to claim 2, characterized in that, A gasket (13) is provided at the opening of the receiving groove (7), and the outer end of the upper shaft (1) and the outer end of the output shaft (2) abut against one side and the other side of the gasket (13), respectively.

5. The connection structure between the upper shaft of a sewing machine and the output shaft of a motor according to claim 1 or 2, characterized in that, The through slots (4) are two or more and extend along the axial direction of the output shaft (2). The through slots (4) are evenly distributed on the groove wall of the mounting groove (3).

6. The connection structure between the upper shaft of a sewing machine and the output shaft of a motor according to claim 5, characterized in that, There are two through slots (4), and they are arranged opposite to each other.

7. The connection structure between the upper shaft of a sewing machine and the output shaft of a motor according to claim 1 or 2, characterized in that, The through groove (4) extends to the outer end of the groove wall of the mounting groove (3).

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