Electromagnet mounting structure of sewing machine

Abstract

The utility model belongs to the technical field of sewing machine accessories, and relates to an electromagnet mounting structure of a sewing machine, which comprises a casing and an electromagnet, a mounting seat is formed on the casing, an inner hole matched with a shell of the electromagnet is arranged in the mounting seat, the outer side of the mounting seat is hermetically connected with a housing covering the outer end part of the electromagnet, and the electromagnet is arranged in the housing. A threading hole for a lead of the electromagnet to penetrate through is formed in the housing, a threading hole plug is assembled in the threading hole, a sealing hole matched with the lead of the electromagnet is formed in the threading hole plug, and sealing structures are formed between the threading hole plug and the threading hole and between the sealing hole and the lead. The electromagnet installation structure of the sewing machine has the advantages of being simple in structure, convenient to install and good in sealing performance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of sewing machine accessories relates to a sewing machine's electromagnet mounting structure. BACKGROUND

[0002] The electromagnet is a common driving unit on the sewing machine, which can drive actions such as lifting the presser foot, and the common mounting structure of the existing electromagnet is fixed on the outside of the machine shell through a support. In a dusty sewing environment, its failure rate has been relatively high. However, if the electromagnet is installed inside the machine shell, not only is the installation more troublesome, but it is also difficult to ensure that the mounting structure has good enough sealing performance. The lead structure of the electromagnet further exacerbates the sealing difficulty. When the mounting structure of the electromagnet does not have good enough sealing performance, the lubricating oil in the machine shell will leak, pollute the cloth, and even cause equipment failure. SUMMARY

[0003] The utility model provides a sewing machine's electromagnet mounting structure, has simple structure, convenient installation, good sealing performance's advantage in view of the prior art's deficiency.

[0004] To solve the above technical problems, the purpose of the utility model is realized through the following technical scheme:

[0005] A kind of electromagnet mounting structure of sewing machine, including machine shell and electromagnet, the mounting seat is formed on the machine shell, inner hole that is adapted to the shell of electromagnet is provided in the mounting seat, the outer side of the mounting seat is sealingly connected with the cover shell of electromagnet outer end portion cover, the cover shell is provided with the threading hole for the lead of electromagnet to pass through, the threading hole is assembled with threading hole plug, the threading hole plug is provided with the sealing hole that is adapted to the lead of electromagnet, and sealing structure is formed between the threading hole plug and threading hole, between sealing hole and lead.

[0006] In the above-mentioned electromagnet mounting structure of sewing machine, sealing pad is arranged between the mounting seat and the cover shell, preferably, the shape of the sealing pad is the same as the shape of the inner side of the cover shell.

[0007] In the above-mentioned electromagnet mounting structure of sewing machine, the bottom of the mounting seat inner hole is provided with an oil return groove, the mounting seat corresponding to the oil return groove is provided with a process through hole in communication with the oil return groove, and the process through hole outside the oil return groove is assembled with a process hole plug, and sealing structure is formed between the process hole plug and the process through hole.

[0008] In the above-mentioned electromagnet mounting structure of sewing machine, the threading hole plug and the process hole plug are made of flexible material, preferably rubber;The threading hole plug and the threading hole, the process hole plug and the process through hole, and the lead and the sealing hole are all interference fit.

[0009] In the electromagnetic iron mounting structure of the sewing machine, the outer end surface of the process hole plug is flush with the outer end surface of the mounting seat, and the outer end surface of the process hole plug is in contact with and sealed with the inner side surface of the sealing gasket after assembly.

[0010] In the electromagnetic iron mounting structure of the sewing machine, the oil return groove is an arc-shaped groove with gradually increasing groove depth from top to bottom, and the process through hole is arranged at a corresponding position at the bottom of the oil return groove.

[0011] In the electromagnetic iron mounting structure of the sewing machine, a plurality of corresponding mounting lugs are arranged on the cover, the sealing gasket and the mounting seat in the circumferential direction respectively, mounting holes are arranged on the mounting lugs, and fastening members for fastening the cover, the sealing gasket and the mounting seat are arranged in the mounting holes.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model provides a electromagnetic iron mounting structure of sewing machine, forms the sealed structure through mounting seat, cover and wire hole plug, separates the execution unit of electromagnetic iron with outside, makes it work under clean environment, runs more stably, can prevent lubricating oil in the inside of casing from leaking outward, leads the lead of electromagnetic iron in the wire hole plug, can still facilitate wiring and layout under the premise of not influencing the sealing property. Therefore, the utility model has the advantages of simple structure, convenient installation and good sealing property.

[0014] 2. The utility model sets up the oil return groove in the inner hole of mounting seat, can further prevent lubricating oil in the inside of casing from leaking. Meanwhile, the process through hole for facilitating machining of the oil return groove is arranged, and the process hole plug is used to seal the process through hole, so that machining is facilitated under the premise of not influencing the sealing property. DRAWINGS

[0015] Figure 1 It is the perspective view of the utility model;

[0016] Figure 2 It is the explosion view of the utility model;

[0017] Figure 3 It is the perspective view of the casing of the utility model;

[0018] Drawing reference: 1, casing; 2, electromagnetic iron; 3, mounting seat; 4, outer shell; 5, inner hole; 6, cover; 7, lead; 8, threading hole; 9, threading hole plug; 10, sealing hole; 11, sealing gasket; 12, oil return groove; 13, process through hole; 14, process hole plug; 15, mounting lug; 16, mounting hole; 17, fastening member. DETAILED DESCRIPTION

[0019] The utility model is further described below with specific embodiments in combination with the drawings, referring to Figures 1-3 :

[0020] An electromagnet 2 mounting structure of a sewing machine, comprising a machine shell 1 and an electromagnet 2, a mounting seat 3 is formed on the machine shell 1, an inner hole 5 matched with the shell 4 of the electromagnet 2 is arranged in the mounting seat 3, a cover shell 6 covering the outer end of the electromagnet 2 is sealingly connected to the outer side of the mounting seat 3, a threading hole 8 through which the lead 7 of the electromagnet 2 passes is arranged on the cover shell 6, a threading hole plug 9 is assembled in the threading hole 8, a sealing hole 10 matched with the lead 7 of the electromagnet 2 is arranged on the threading hole plug 9, and a sealing structure is formed between the threading hole plug 9 and the threading hole 8 and between the sealing hole 10 and the lead 7.

[0021] Referring to the accompanying drawings Figure 1 and the accompanying drawings Figure 2 , during installation, the electromagnet 2 is put into the inner hole 5 of the mounting seat 3 along the axial direction, then the cover shell 6 is fixed to the mounting seat 3 while the lead 7 of the electromagnet 2 is made to pass out of the threading hole 8, finally the end of the lead 7 is inserted into the sealing hole 10 of the threading hole plug 9, the threading hole plug 9 is moved along the lead 7 and is plugged into the threading hole 8 to complete the installation, after the installation is completed, the mounting seat 3, the cover shell 6 and the threading hole plug 9 form a sealing structure of the shell 4 of the electromagnet 2, and the sealing hole 10 on the threading hole plug 9 forms a sealing structure of the lead 7 of the electromagnet 2, thus the sealing of the overall structure of the electromagnet 2 is completed, and the leakage of lubricating oil in the machine shell 1 from the installation position of the electromagnet 2 is avoided.

[0022] In order to increase the sealing between the mounting seat 3 and the cover shell 6, a sealing gasket 11 is arranged between the mounting seat 3 and the cover shell 6, preferably, the shape of the sealing gasket 11 is the same as that of the inner side surface of the cover shell 6.

[0023] Referring to the accompanying drawings Figure 3 , the bottom of the inner hole 5 of the mounting seat 3 is provided with an oil return groove 12, the mounting seat 3 corresponding to the oil return groove 12 is provided with a process through hole 13 communicating with the oil return groove 12, and the process through hole 13 outside the oil return groove 12 is assembled with a process hole plug 14, and a sealing structure is formed between the process hole plug 14 and the process through hole 13. When the lubricating oil in the machine shell 1 splashes into the gap between the electromagnet 2 and the inner hole 5, it can be collected into the oil return groove 12 and then returned to the machine shell 1 through a return channel (such as a through hole arranged on the inner side of the oil return groove 12).

[0024] In order to ensure the sealing, the above-mentioned threading hole plug 9 and process hole plug 14 are made of flexible material, preferably rubber, and the threading hole plug 9 and the process hole plug 14 are in interference fit between the threading hole plug 9 and the threading hole 8, between the process hole plug 14 and the process through hole 13, and between the lead 7 and the sealing hole 10, and the deformation structure of the threading hole plug 9 and the process hole plug 14 is used to further increase the sealing.

[0025] In order to avoid the influence of the process hole plug 14 on the sealing between the mounting base 3 and the cover 6, the outer end surface of the process hole plug 14 is flush with the outer end surface of the mounting base 3, and the outer end surface of the process hole plug 14 is in contact and sealed with the inner side surface of the sealing gasket 11 after assembly.

[0026] In order to facilitate oil return, the oil return groove 12 is an arc-shaped groove, and the groove depth gradually increases from top to bottom, and the process through hole 13 is arranged at the corresponding position of the bottom of the oil return groove 12.

[0027] In the embodiment, the fixing structure of the cover 6 and the mounting base 3 is that a plurality of corresponding mounting ears 15 are arranged on the cover 6, the sealing gasket 11 and the mounting base 3 respectively along the circumference, mounting holes 16 are arranged on the mounting ears 15, and fastening members 17 for fastening the cover 6, the sealing gasket 11 and the mounting base 3 are arranged in the mounting holes 16; in the embodiment, the mounting ears 15, the mounting holes 16 and the fastening members 17 are all arranged as three, and the fastening members 17 are screws.

[0028] The above embodiment is only a preferred embodiment of the utility model, and does not limit the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. An electromagnet mounting structure of a sewing machine comprising a machine casing (1) and an electromagnet (2), characterized by, The mounting seat (3) is provided with an inner hole (5) matched with the shell (4) of the electromagnet (2), the outer side of the mounting seat (3) is sealingly connected with the cover shell (6) covering the outer end of the electromagnet (2), the cover shell (6) is provided with a threading hole (8) through which the lead wire (7) of the electromagnet (2) passes, the threading hole (8) is assembled with a threading hole plug (9), the threading hole plug (9) is provided with a sealing hole (10) matched with the lead wire (7) of the electromagnet (2), and the threading hole plug (9) and the threading hole (8) and the sealing hole (10) and the lead wire (7) form a sealing structure.

2. The electromagnet mounting structure for a sewing machine according to claim 1, wherein The mounting seat (3) and the cover shell (6) are provided with a sealing gasket (11), and the shape of the sealing gasket (11) is the same as the shape of the inner side of the cover shell (6).

3. The electromagnet mounting structure for a sewing machine according to claim 2, wherein The bottom of the inner hole (5) of the mounting seat (3) is provided with an oil return groove (12), the mounting seat (3) corresponding to the oil return groove (12) is provided with a process through hole (13) in communication with the oil return groove (12), and the process through hole (13) outside the oil return groove (12) is assembled with a process hole plug (14), and the process hole plug (14) and the process through hole (13) form a sealing structure.

4. The electromagnet mounting structure for a sewing machine according to claim 3, wherein The threading hole plug (9) and the process hole plug (14) are made of flexible material.

5. The electromagnet mounting structure for a sewing machine according to claim 3, wherein The outer end surface of the process hole plug (14) is flush with the outer end surface of the mounting seat (3), and after assembly, the outer end surface of the process hole plug (14) is in contact with and sealingly connected with the inner side surface of the sealing gasket (11).

6. The electromagnet mounting structure for a sewing machine according to claim 3, wherein The oil return groove (12) is an arc-shaped groove, and the groove depth gradually increases from top to bottom, and the process through hole (13) is arranged at the corresponding position of the bottom of the oil return groove (12).

7. The electromagnet mounting structure for a sewing machine according to claim 2, wherein The cover shell (6), the sealing gasket (11) and the mounting seat (3) are respectively provided with a plurality of corresponding mounting ears (15) along the circumference, the mounting ears (15) are provided with mounting holes (16), and the mounting holes (16) are provided with fasteners (17) for fastening the cover shell (6), the sealing gasket (11) and the mounting seat (3).

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