Quick dismounting and mounting mechanism for auxiliary wheel of sewing machine

Abstract

The utility model provides a quick dismounting mechanism for sewing machine auxiliary wheel, including main body fixed plate and install the fixed column on the sewing machine, main body fixed plate both sides are equipped with the rotation groove, and the rotation groove is rotatingly installed with the auxiliary wheel body, main body fixed plate bottom is equipped with the two plug-in hole, main body fixed plate bottom is equipped with the plug-in hole. Wherein two mounting holes are formed in one rotating groove, through openings are formed between the two mounting holes and the corresponding inserting holes, elastic limiting assemblies are installed in the inserting holes, when the main body fixing plate is disassembled, a worker only needs to lift the main body fixing plate upwards, at the moment, the fixing columns can extrude limiting heads in the process of being disengaged from the inserting holes, and therefore the main body fixing plate can be disassembled. By means of the structure, the main body fixing plate provided with the auxiliary wheel body is easier and more convenient to disassemble and assemble, tools do not need to be used during disassembly and assembly, and the maintenance efficiency of the sewing machine is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing machines, and in particular relates to a quick disassembly and assembly mechanism for auxiliary wheels of sewing machines. Background Art

[0002] The auxiliary wheel is an important component of a sewing machine. The auxiliary wheel can facilitate the rapid transportation of fabrics and improve the sewing speed of clothes. However, traditional auxiliary wheels are generally fixed on the surface of the sewing machine, and their disassembly and assembly are relatively troublesome. They are generally fixed to the sewing machine by screws or bolts. When the staff disassembles the auxiliary wheel for maintenance of the sewing machine, they need to use a screwdriver or wrench to remove the screws or bolts and then remove the auxiliary wheel. Then, they need to repeat the above steps to reinstall the auxiliary wheel. This disassembly and assembly method is not only troublesome but also time-consuming, which affects the staff's maintenance efficiency of the sewing machine. Based on this, we propose a quick-release structure that can conveniently disassemble and assemble the auxiliary wheel of the sewing machine. Utility Model Content

[0003] The purpose of the utility model is to provide a quick disassembly and assembly mechanism for an auxiliary wheel of a sewing machine, aiming to solve the problems raised in the background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a quick disassembly and assembly mechanism for auxiliary wheels of a sewing machine, comprising a main body fixing plate and a fixing column mounted on the sewing machine, wherein both sides of the main body fixing plate are provided with a rotation groove, and the auxiliary wheel body is rotatably mounted in the rotation groove, and the bottom end of the main body fixing plate is provided with two plug holes, one of the rotation grooves is provided with two mounting holes, and a through opening is provided between the two mounting holes and the corresponding plug holes, and an elastic limit assembly is installed in the plug hole;

[0005] The fixing column includes a fixing portion and an extension portion. The fixing portion is installed on the surface of the sewing machine. A slot is provided on the surface of the extension portion. The extension portion is inserted into the plug hole and fixed by an elastic limiting component.

[0006] As a preferred technical solution of the present invention, the elastic limiting assembly includes an elastic clamp movably installed in the mounting hole, a limiting head is provided at one end of the elastic clamp, a slot is provided at the other end of the elastic clamp, a spring is provided in the slot, one end of the spring is connected to the stud of the fixing bolt, and the fixing bolt is threadedly connected to the mounting hole.

[0007] As a preferred technical solution of the present invention, the inner wall of the slot is in the shape of a smooth arc, and the limiting head is in the shape of a smooth spherical head.

[0008] As a preferred technical solution of the present invention, the diameter of the opening is larger than the diameter of the limiting head, and the diameter of the elastic clamp matches the inner diameter of the mounting hole.

[0009] As a preferred technical solution of the present invention, the depth of the plug hole matches the length of the extension portion, and when the extension portion is fully inserted into the plug hole, the deepest part of the card slot faces the opening.

[0010] When the auxiliary wheel is installed, the main body fixing plate is only required to align the plug hole at the bottom of the main body fixing plate with the fixing column, so that the extension part is inserted into the plug hole and the main body fixing plate is pressed downward. The extension part will squeeze the limit head during the continuous insertion into the plug hole, so that the elastic clamp will squeeze the spring and retract the limit head into the opening. When the extension part is fully inserted into the plug hole, the spring recovers the deformation so that the elastic clamp drives the limit head to be inserted into the card slot, thereby completing the installation of the main body fixing plate. When removing the main body fixing plate, the staff only needs to lift the main body fixing plate upward. At this time, the fixing column will squeeze the limit head during the process of disengaging from the plug hole, so that the limit head will disengage from the card slot and contact the fixing column in a limited and fixed manner. Through this structure, the disassembly and installation of the main body fixing plate with the auxiliary wheel body installed is simpler and more convenient, and no tools are required during disassembly and assembly, which greatly improves the maintenance efficiency of the sewing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the bottom structure of the utility model;

[0014] Figure 3 This is a schematic structural diagram of the main body fixing plate in the present utility model;

[0015] Figure 4 This is a schematic structural diagram of the fixed column in the utility model;

[0016] Figure 5 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged structure at A;

[0018] Figure 7It is a structural schematic diagram of the elastic clamp in the utility model.

[0019] In the figure: 1. Main body fixing plate; 2. Fixing column; 21. Fixing part; 22. Extension part; 23. Slot; 3. Rotation slot; 4. Auxiliary wheel body; 5. Plug hole; 6. Mounting hole; 7. Opening; 8. Elastic limit assembly; 81. Elastic clamp; 82. Limit head; 83. Slot; 84. Spring; 85. Fixing bolt. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 7 The utility model provides the following technical solutions: a quick disassembly and assembly mechanism for an auxiliary wheel of a sewing machine, comprising a main body fixing plate 1 and a fixing column 2 installed on the sewing machine, a rotation groove 3 is provided on both sides of the main body fixing plate 1, an auxiliary wheel body 4 is rotatably installed in the rotation groove 3, two plug holes 5 are provided at the bottom end of the main body fixing plate, one of the rotation grooves 3 is provided with two mounting holes 6, a through opening 7 is provided between the two mounting holes 6 and the corresponding plug holes 5, and an elastic limiting component 8 is installed in the plug hole 5.

[0022] In this embodiment, the fixing column 2 includes a fixing portion 21 and an extension portion 22. The fixing portion 21 is installed on the surface of the sewing machine. A slot 23 is provided on the surface of the extension portion 22. The extension portion 22 is inserted into the plug-in hole 5 and fixed by an elastic limiting component 8.

[0023] Specifically, when installing the main body fixing plate 1, align the plug hole 5 at the bottom of the main body fixing plate 1 with the fixing column 2, and then press the main body fixing plate 1 downward so that the extension part 22 is inserted into the plug hole 5. The elastic limiting component 8 is provided to cooperate with the card slot 23 to limit and fix the main body fixing plate 1. In this way, the disassembly and assembly of the main body fixing plate 1 equipped with the auxiliary wheel body 4 is more convenient.

[0024] In this embodiment, the elastic limiting assembly 8 includes an elastic clamp 81 movably installed in the mounting hole 6, a limiting head 82 is provided at one end of the elastic clamp 81, a slot 83 is provided at the other end of the elastic clamp 81, a spring 84 is provided in the slot 83, one end of the spring 84 is connected to the stud of the fixing bolt 85, and the fixing bolt 85 is threadedly connected to the mounting hole 6.

[0025] Specifically, after the elastic clamp 81 is installed in the mounting hole 6, the spring 84 is inserted into the mounting hole 6 and pressed against the slot 83, and then the fixing bolt 85 is threadedly connected to the mounting hole 6 to install the elastic clamp 81 in the mounting hole 6. Then, under the action of the spring 84, the elastic clamp 81 cooperates with the limit head 82 to limit and fix the fixing column 2.

[0026] In this embodiment, the inner wall of the locking slot 23 is in a smooth arc shape, and the limiting head 82 is in a smooth spherical head shape.

[0027] Specifically, since the inner wall of the slot 23 is smooth and the limiting head 82 is in the shape of a smooth ball head, when the main body fixing plate 1 is disassembled, the limiting head 82 is more easily disengaged from the slot 23 under the action of the slot 23, thereby making it easier for the staff to quickly disassemble the main body fixing plate 1 with the auxiliary wheel body 4 installed.

[0028] In this embodiment, the diameter of the opening 7 is larger than the diameter of the limiting head 82 , and the diameter of the elastic clamp 81 matches the inner diameter of the mounting hole 6 .

[0029] Specifically, the diameter of the opening 7 is larger than the diameter of the limit head 82, so the limit head 82 can extend through the opening 7 into the plug-in hole 5 and cooperate with the card slot 23 to limit and fix the fixing column 2, and the diameter of the elastic clamp 81 matches the inner diameter of the mounting hole 6, which facilitates more stable movement of the elastic clamp 81 in the mounting hole 6.

[0030] In this embodiment, the depth of the inserting hole 5 matches the length of the extending portion 22 . When the extending portion 22 is fully inserted into the inserting hole 5 , the deepest portion of the locking slot 23 faces the opening 7 .

[0031] Specifically, in this manner, when the extension portion 22 is fully inserted into the insertion hole 5 , the limiting head 82 can limit and fix the main body fixing plate 1 by cooperating with the card slot 23 .

[0032] Working principle: Since the fixing column 2 is installed on the surface of the sewing machine, when installing the auxiliary wheel body 4, it is only necessary to align the plug hole 5 at the bottom of the main body fixing plate 1 with the fixing column 2, so that the extension part 22 is inserted into the plug hole 5, and the main body fixing plate 1 is pressed downward. The extension part 22 will squeeze the limit head 82 during the process of continuing to insert into the plug hole 5, so that the elastic clamp 81 squeezes the spring 84 and the limit head 82 retracts into the opening 7. When the extension part 22 is fully inserted into the plug hole 5, the spring 84 recovers its deformation, so that the elastic clamp 81 is brought into engagement with the auxiliary wheel body 4. The movable limit head 82 is inserted into the card slot 23, thereby completing the installation of the main body fixing plate 1. When removing the main body fixing plate 1, the staff only needs to pull the main body fixing plate 1 upward. At this time, the fixing column 2 will squeeze the limit head 82 during the process of disengaging from the plug-in hole 5, thereby causing the limit head 82 to disengage from the card slot 23, releasing the limiting and fixing effect on the fixing column 2. Through this structure, the disassembly and installation of the main body fixing plate 1 equipped with the auxiliary wheel body 4 is simpler and more convenient, and no tools are required during disassembly and assembly, which greatly improves the maintenance efficiency of the sewing machine.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A quick disassembly and assembly mechanism for an auxiliary wheel of a sewing machine, comprising a main body fixing plate (1) and a fixing column (2) mounted on the sewing machine, characterized in that: Both sides of the main body fixing plate (1) are provided with rotation grooves (3), and an auxiliary wheel body (4) is rotatably installed in the rotation grooves (3). The bottom end of the main body fixing plate is provided with two plug holes (5), one of the rotation grooves (3) is provided with two mounting holes (6), and a through opening (7) is provided between the two mounting holes (6) and the corresponding plug holes (5), and an elastic limiting component (8) is installed in the plug hole (5); The fixing column (2) comprises a fixing portion (21) and an extending portion (22); the fixing portion (21) is mounted on the surface of the sewing machine; a slot (23) is provided on the surface of the extending portion (22); the extending portion (22) is inserted into the plug hole (5) and fixed to the extending portion (22) by an elastic limiting assembly (8).

2. The quick disassembly and assembly mechanism for the auxiliary wheel of a sewing machine according to claim 1, characterized in that: The elastic limiting assembly (8) comprises an elastic clamp (81) movably mounted in the mounting hole (6), a limiting head (82) being provided at one end of the elastic clamp (81), a slot (83) being provided at the other end of the elastic clamp (81), a spring (84) being provided in the slot (83), one end of the spring (84) being connected to a stud of a fixing bolt (85), and the fixing bolt (85) being threadedly connected to the mounting hole (6).

3. The quick disassembly and assembly mechanism for the auxiliary wheel of a sewing machine according to claim 2, characterized in that: The inner wall of the clamping groove (23) is in the shape of a smooth arc, and the limiting head (82) is in the shape of a smooth ball head.

4. The quick disassembly and assembly mechanism for the auxiliary wheel of a sewing machine according to claim 2, characterized in that: The diameter of the opening (7) is larger than the diameter of the limiting head (82), and the diameter of the elastic clamp (81) matches the inner diameter of the mounting hole (6).

5. The quick disassembly and assembly mechanism for the auxiliary wheel of a sewing machine according to claim 1, characterized in that: The depth of the plug hole (5) matches the length of the extension portion (22), and when the extension portion (22) is fully inserted into the plug hole (5), the deepest part of the card slot (23) faces the opening (7).

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