CN109468765B - Sewing machine - Google Patents
Sewing machine Download PDFInfo
- Publication number
- CN109468765B CN109468765B CN201710802793.2A CN201710802793A CN109468765B CN 109468765 B CN109468765 B CN 109468765B CN 201710802793 A CN201710802793 A CN 201710802793A CN 109468765 B CN109468765 B CN 109468765B
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- CN
- China
- Prior art keywords
- main shaft
- sewing machine
- oil return
- shell
- end plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000009958 sewing Methods 0.000 title claims abstract description 57
- 239000003921 oil Substances 0.000 claims abstract description 87
- 239000010687 lubricating oil Substances 0.000 claims abstract description 26
- 230000000149 penetrating effect Effects 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 description 9
- 239000003595 mist Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B71/00—Lubricating or cooling devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B73/00—Casings
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B81/00—Sewing machines incorporating devices serving purposes other than sewing, e.g. for blowing air, for grinding
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a sewing machine, which comprises a shell end plate and a main shaft, wherein the shell end plate is arranged between a shell inner cavity of the sewing machine and an electric cabinet to seal and isolate the shell inner cavity from the electric cabinet; the casing end plate is provided with an oil return hole, a first port of the oil return hole is positioned on the first side wall to be communicated with a preset oil return position positioned at the main shaft, a boss structure is arranged on the second side wall, and a second port of the oil return hole is positioned on the end face of the boss structure. Therefore, when the sewing machine is placed in a toppling mode, lubricating oil in the inner cavity of the machine shell can gather around the boss structure on the second side wall of the end plate of the machine shell, the lubricating oil cannot return to the main shaft through the oil return hole and enter the electric cabinet, and the problem that the lubricating oil easily enters the electric cabinet through the oil return mechanism to cause the electric cabinet to fail when the sewing machine in the prior art is placed in a toppling mode is solved.
Description
Technical Field
The invention relates to the field of sewing machines, in particular to a sewing machine.
Background
In the production process of the sewing machine, in order to ensure the full lubrication of all parts of the sewing machine, the shell of the sewing machine is filled with lubricating oil.
As shown in fig. 1, an oil pan 2 is provided below a casing 1, and lubricating oil is sprayed in the form of oil mist onto respective components to be lubricated by an oil pump assembly 3 provided in the oil pan 2 to complete lubrication.
In the normal working process, in order to prevent oil mist from entering the electric cabinet to cause motor or electric appliance component to fail, a right end cover 4 is arranged on the shell wall of the shell 1 between the inner cavity of the shell and the electric cabinet, the right end cover 4 is sealed between the sealing ring 5 and the shell wall of the shell 1, a shaft hole is formed in the right end cover 4, a thread bush 7 is sleeved on the main shaft 6, the main shaft 6 is arranged in the shaft hole of the right end cover 4 in a penetrating way through the thread bush 7, and in the rotating process of the main shaft 6, the thread bush 7 pushes the oil mist sprayed to the main shaft 6 towards one side of the inner cavity of the shell to prevent the oil mist from entering the electric cabinet. The pushed oil mist accumulates inside the right end cover 4 and forms oil drops, and the oil drops return to the oil pan 2 below along the oil return holes 8 formed in the wall of the casing 1, thereby achieving the purpose of oil return.
However, this oil return structure has certain defect, and the condition of placing can appear empting sometimes in the sewing machine in transportation handling, and when sewing machine empties towards electric cabinet one side and places, lubricating oil in the food tray 2 can flow to thread bush 7 and right-hand member lid 4 department along oil gallery 8 to in penetrating the electric cabinet through the gap between thread bush 7 and the right-hand member lid 4, thereby lead to being located motor and the electrical components trouble of electric cabinet.
Although the sewing machine can discharge the lubricating oil in the oil pan 2 before packing and transportation, the residual lubricating oil on the surfaces of all parts cannot be completely removed before packing, so that the residual lubricating oil still enters the electric cabinet through the oil return holes 8.
Disclosure of Invention
The invention mainly aims to provide a sewing machine, which solves the problem that lubricating oil easily enters an electric cabinet through an oil return mechanism to cause the electric cabinet to be failed when the sewing machine in the prior art is in a tilting placement condition.
In order to achieve the above object, the present invention provides a sewing machine, including a casing end plate and a main shaft, wherein the casing end plate is arranged between a casing inner cavity of the sewing machine and an electric cabinet to seal the casing inner cavity from the electric cabinet, the main shaft is rotatably arranged on the casing end plate in a penetrating manner, and the casing end plate includes a first side wall facing the electric cabinet and a second side wall facing the casing inner cavity; the casing end plate is provided with an oil return hole, a first port of the oil return hole is positioned on the first side wall to be communicated with a preset oil return position positioned at the main shaft, a boss structure is arranged on the second side wall, and a second port of the oil return hole is positioned on the end face of the boss structure.
Further, the boss structure is an annular boss around the spindle.
Further, the oil return hole is a linear hole, and the lower part of the inner cavity of the shell is an oil storage area; the oil return hole and the main shaft are provided with a preset included angle, so that the oil return hole inclines from the first port to the second port towards the oil storage area.
Further, the sewing machine further includes: the thread sleeve is sleeved on the main shaft to rotate along with the main shaft and is used for pushing and extruding lubricating oil sprayed onto the main shaft from one side of the electric cabinet to one side of the inner cavity of the shell; the first port is arranged corresponding to the threaded sleeve and is positioned below the threaded sleeve.
Further, the shell end plate is provided with a bearing assembly hole, a bearing is arranged in the bearing assembly hole, and the main shaft is rotatably arranged on the shell end plate in a penetrating manner through the bearing; wherein, first port is located on the inner wall of bearing assembly hole.
Further, the sewing machine further includes: the end cover is covered on the bearing assembly hole to seal and isolate the inner cavity of the shell from the electric cabinet, an inner hole is formed in the end cover, and the thread sleeve is arranged in the inner hole of the end cover in a penetrating way; the first port is communicated with the gap between the end cover and the bearing.
Further, a pit structure is formed in the inner wall of the bearing assembly hole and is communicated with the first port.
Further, a heat dissipation rib is arranged on the shell of the sewing machine.
Further, the sewing machine further includes: the first fan and the second fan are arranged on the main shaft and are positioned in the electric cabinet.
Further, the sewing machine further includes: the main shaft is arranged in the motor in a penetrating way; the first fan and the second fan are respectively positioned at two sides of the motor.
The sewing machine adopting the technical scheme of the invention comprises a shell end plate and a main shaft, wherein the shell end plate is arranged between a shell inner cavity of the sewing machine and an electric cabinet to seal and isolate the shell inner cavity from the electric cabinet; the casing end plate is provided with an oil return hole, a first port of the oil return hole is positioned on the first side wall to be communicated with a preset oil return position positioned at the main shaft, a boss structure is arranged on the second side wall, and a second port of the oil return hole is positioned on the end face of the boss structure. Therefore, when the sewing machine is placed in a toppling mode, lubricating oil in the inner cavity of the machine shell can gather around the boss structure on the second side wall of the end plate of the machine shell, the lubricating oil cannot return to the main shaft through the oil return hole and enter the electric cabinet, and the problem that the lubricating oil easily enters the electric cabinet through the oil return mechanism to cause the electric cabinet to fail when the sewing machine in the prior art is placed in a toppling mode is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a schematic cross-sectional view of a main shaft oil return structure of a conventional sewing machine;
FIG. 2 is a schematic view showing a longitudinal sectional structure of a main shaft oil return structure of a sewing machine according to an alternative embodiment of the present invention;
FIG. 3 is a schematic view of a second end position of an oil return hole of a sewing machine according to an alternative embodiment of the present invention;
FIG. 4 is a schematic view of a first end position of an oil return hole of a sewing machine according to an alternative embodiment of the present invention; and
Fig. 5 is a schematic structural view of a heat dissipating rib on a casing of a sewing machine according to an alternative embodiment of the present invention.
Wherein the above figures include the following reference numerals:
1. A housing; 2. an oil pan; 3. an oil pump assembly; 4. a right end cover; 5. a seal ring; 6. a main shaft; 7. a thread sleeve; 8. an oil return hole; 10. a housing end plate; 11. an oil return hole; 12. a boss structure; 13. bearing assembly holes; 14. a pit structure; 20. an inner cavity of the shell; 21. an oil storage area; 30. an electric control box; 40. a main shaft; 50. a thread sleeve; 60. a bearing; 70. an end cap; 80. radiating ribs; 90. a first fan; 100. a second fan; 110. and a motor.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
According to the embodiment of the invention, as shown in fig. 2, the sewing machine comprises a shell end plate 10 and a main shaft 40, wherein the shell end plate 10 is arranged between a shell inner cavity 20 and an electric cabinet 30 of the sewing machine so as to seal the shell inner cavity 20 from the electric cabinet 30, the main shaft 40 is rotatably penetrated on the shell end plate 10, and the shell end plate 10 comprises a first side wall facing the electric cabinet 30 and a second side wall facing the shell inner cavity 20; wherein, the casing end plate 10 is provided with an oil return hole 11, a first port of the oil return hole 11 is located on the first side wall to be communicated with a preset oil return position located at the spindle 40, a second side wall is provided with a boss structure 12, and a second port of the oil return hole 11 is located on an end face of the boss structure 12.
The sewing machine adopting the technical scheme of the invention comprises a shell end plate 10 and a main shaft 40, wherein the shell end plate 10 is arranged between a shell inner cavity 20 and an electric cabinet 30 of the sewing machine so as to seal and isolate the shell inner cavity 20 from the electric cabinet 30, the main shaft 40 is rotatably arranged on the shell end plate 10 in a penetrating way, and the shell end plate 10 comprises a first side wall facing the electric cabinet 30 and a second side wall facing the shell inner cavity 20; wherein, the casing end plate 10 is provided with an oil return hole 11, a first port of the oil return hole 11 is located on the first side wall to be communicated with a preset oil return position located at the spindle 40, a second side wall is provided with a boss structure 12, and a second port of the oil return hole 11 is located on an end face of the boss structure 12. Therefore, when the sewing machine is placed in a tilting mode, lubricating oil in the inner cavity 20 of the machine shell can be gathered around the boss structure 12 on the second side wall of the end plate 10 of the machine shell, and cannot return to the main shaft 40 through the oil return hole 11 and enter the electric cabinet 30, so that the problem that when the sewing machine in the prior art is placed in a tilting mode, the lubricating oil easily enters the electric cabinet 30 through the oil return mechanism to cause the failure of the electric cabinet 30 is solved.
In particular, as shown in fig. 3, the boss structure 12 is an annular boss about the spindle 40. The second port of the oil return hole 11 is located at the lower end of the boss structure 12.
The lower part of the inner cavity 20 of the casing is an oil storage area 21, and in order to enable the lubricating oil at a preset oil return position at the main shaft 40 to smoothly return to the oil storage area 21 at the lower part of the inner cavity 20 of the casing, further, as shown in fig. 2, the oil return hole 11 is a linear hole; the oil return hole 11 and the main shaft 40 have a preset included angle therebetween, so that the oil return hole 11 is inclined from the first port to the second port toward the oil storage area 21, and the lubricating oil can smoothly return to the oil storage area 21 at the lower part of the housing cavity 20 through the oil return hole 11.
As shown in fig. 2 and 4, the casing end plate 10 is provided with a bearing assembly hole 13, a bearing 60 is provided in the bearing assembly hole 13, an outer ring of the bearing 60 is fixed on an inner wall of the bearing assembly hole 13, and the main shaft 40 passes through an inner ring of the bearing 60 and is fixed with the inner ring of the bearing 60, so that the main shaft 40 is rotatably mounted on the casing end plate 10 through the bearing 60; wherein the first port is located at a lower portion of the inner wall of the bearing assembly hole 13.
To prevent oil mist from entering the electric cabinet 30 in the axial direction of the main shaft 40 to cause malfunction of the electric cabinet 30 when lubricating oil is injected to the main shaft 40. Further, a threaded sleeve 50 is sleeved on the main shaft 40, and the threaded sleeve 50 rotates along with the main shaft 40, so that lubricating oil sprayed onto the main shaft 40 is pushed from one side of the electric cabinet 30 to one side of the inner cavity 20 of the shell, and oil mist cannot enter the electric cabinet 30 through the main shaft 40; an end cover 70 is arranged on the upper cover of one side, facing the electric cabinet 30, of the bearing assembly hole 13, the end cover 70 seals the inner cavity 20 of the machine shell from the electric cabinet 30, a gap is formed between the end cover 70 and the bearing 60, and the first port is communicated with the gap between the end cover 70 and the bearing 60.
The end cover 70 is provided with an inner hole, the thread bush 50 is penetrated in the inner hole of the end cover 70, a tiny gap is reserved between the thread bush 50 and the hole wall of the inner hole of the end cover 70 so as to ensure the normal rotation of the thread bush 50, and lubricating oil sprayed onto the main shaft 40 is pushed from one side of the electric cabinet 30 to one side of the inner cavity 20 of the casing in the rotation process of the thread bush 50, so that the lubricating oil can be prevented from entering the electric cabinet 30 through the gap between the thread bush 50 and the inner hole of the end cover 70, and oil mist sprayed onto the main shaft 40 forms oil drops through the pushing action of the thread bush 50, flows into the oil return hole 11 along the gap between the end cover 70 and the bearing 60, and finally returns to the oil storage area 21 at the lower part of the inner cavity 20 of the casing through the oil return hole 11.
In order to enable the lubricating oil flowing down along the gap between the end cover 70 and the bearing 60 to smoothly enter the oil return hole 11 through the first port, the lubricating oil is prevented from accumulating in the first port of the oil return hole 11, further, the pit structure 14 is formed in the inner wall of the bearing assembly hole 13, the pit structure 14 is communicated with the first port, and the oil return speed of the lubricating oil is effectively improved through the pit structure 14.
During the long-time working process of the sewing machine, a large amount of heat can be accumulated in the sewing machine, and the normal working and stability of each electrical element in the electric cabinet 30 can be affected by the higher temperature. Therefore, in order to enable the sewing machine to quickly and effectively dissipate heat during working, the wall thickness of the machine shell is reduced, the heat capacity of the machine shell is effectively reduced, heat release is facilitated, and the effect of improving heat dissipation is achieved. In addition, the wall thickness of the shell is reduced, so that the material consumption can be reduced, and the aim of saving the cost is fulfilled. As shown in fig. 5, the casing of the sewing machine is further provided with heat dissipation ribs 80, and preferably, the heat dissipation ribs 80 are distributed on the side wall of the casing end plate 10 facing the electric cabinet 30 in a rectangular grid structure. The heat dissipation ribs 80 can effectively increase the heat dissipation area of the casing and improve the heat dissipation effect, thereby reducing the temperature rise and ensuring the stable operation of each electrical element in the electric cabinet 30. In addition, by reducing the thickness of the casing and arranging the heat dissipation ribs 80 on the casing, the transmission of vibration can be effectively reduced, and the sewing machine can be effectively protected.
In order to further improve the heat dissipation effect of the sewing machine. As shown in fig. 2, the sewing machine further includes: a first fan 90 and a second fan 100, the first fan 90 and the second fan 100 being mounted on the main shaft 40 and located in the electric cabinet 30; optionally, the motor 110 of the sewing machine is disposed between the first fan 90 and the second fan 100, the spindle 40 is disposed in the motor 110 in a penetrating manner, and the air in the electric cabinet 30 is stirred to form convection by the first fan 90 and the second fan 100, so that heat in the electric cabinet 30 is taken away, the temperature of the sewing machine is kept low in long-term operation, and stable operation of each electrical element in the electric cabinet 30 is ensured.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The sewing machine comprises a machine shell end plate (10) and a main shaft (40), wherein the machine shell end plate (10) is arranged between a machine shell inner cavity (20) and an electric control box (30) of the sewing machine to seal and isolate the machine shell inner cavity (20) from the electric control box (30), the main shaft (40) is rotatably arranged on the machine shell end plate (10) in a penetrating way, and is characterized in that,
The housing end plate (10) comprises a first side wall facing the electric cabinet (30) and a second side wall facing the housing inner cavity (20);
The machine shell comprises a machine shell end plate (10), wherein an oil return hole (11) is formed in the machine shell end plate (10), a first port of the oil return hole (11) is located on the first side wall and is communicated with a preset oil return position located at a main shaft (40), a boss structure (12) and a concave structure are arranged on the second side wall, the boss structure (12) and the concave structure form a step shape, and a second port of the oil return hole (11) is located on the end face of the boss structure (12);
The boss structure (12) is an annular boss around the main shaft (40); the concave structure is positioned on one side of the boss structure (12) away from the main shaft (40);
The oil return hole (11) is a linear hole, and the lower part of the inner cavity (20) of the shell is an oil storage area (21); the oil return hole (11) and the main shaft (40) are provided with a preset included angle, so that the oil return hole (11) inclines towards the oil storage area (21) from the first port to the second port.
2. The sewing machine of claim 1, further comprising:
The thread sleeve (50) is sleeved on the main shaft (40) to rotate along with the main shaft (40) and is used for pushing lubricating oil sprayed onto the main shaft (40) from one side of the electric control box (30) to one side of the inner cavity (20) of the shell;
wherein the first port is arranged corresponding to the thread bush (50) and is positioned below the thread bush (50).
3. Sewing machine according to claim 2, characterized in that the end plate (10) of the housing has a bearing assembly hole (13), a bearing (60) is arranged in the bearing assembly hole (13), and the main shaft (40) is rotatably arranged on the end plate (10) of the housing by the bearing (60);
wherein the first port is located on an inner wall of the bearing assembly hole (13).
4. A sewing machine as defined in claim 3, further comprising:
the end cover (70) is arranged on the bearing assembly hole (13) in a covering manner to seal the shell inner cavity (20) from the electric cabinet (30), the end cover (70) is provided with an inner hole, and the thread sleeve (50) is arranged in the inner hole of the end cover (70) in a penetrating manner;
Wherein a gap is provided between the end cap (70) and the bearing (60), and the first port communicates with the gap between the end cap (70) and the bearing (60).
5. A sewing machine according to claim 3, characterized in that the inner wall of the bearing assembly hole (13) is provided with a pit structure (14), the pit structure (14) being in communication with the first port.
6. The sewing machine of claim 1, wherein the sewing machine housing is provided with heat dissipating ribs (80).
7. The sewing machine of claim 1, further comprising:
A first fan (90) and a second fan (100), the first fan (90) and the second fan (100) are mounted on the main shaft (40) and located in the electric cabinet (30).
8. The sewing machine of claim 7, further comprising:
a motor (110), wherein the main shaft (40) is arranged in the motor (110) in a penetrating way;
wherein the first fan (90) and the second fan (100) are respectively positioned at two sides of the motor (110).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710802793.2A CN109468765B (en) | 2017-09-07 | 2017-09-07 | Sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710802793.2A CN109468765B (en) | 2017-09-07 | 2017-09-07 | Sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109468765A CN109468765A (en) | 2019-03-15 |
| CN109468765B true CN109468765B (en) | 2024-07-09 |
Family
ID=65658331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710802793.2A Active CN109468765B (en) | 2017-09-07 | 2017-09-07 | Sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109468765B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906579A (en) * | 2017-04-28 | 2017-06-30 | 浙江中捷缝纫科技有限公司 | A kind of spindle motor mounting structure of sewing machine |
| CN207176255U (en) * | 2017-09-07 | 2018-04-03 | 浙江中捷缝纫科技有限公司 | Sewing machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003023747A (en) * | 2001-07-05 | 2003-01-24 | Toshiba Transport Eng Inc | Lubricating structure for bearing in motor for vehicle |
| JP4684266B2 (en) * | 2007-08-08 | 2011-05-18 | 東洋電機製造株式会社 | Bearing device for vehicle main motor |
| JP5361578B2 (en) * | 2009-07-07 | 2013-12-04 | 株式会社東芝 | Bearing device for rotating electric machine for railway vehicle |
| CN104033579B (en) * | 2014-03-31 | 2016-06-15 | 南车株洲电力机车有限公司 | A kind of power transmission shaft dynamic sealing device |
-
2017
- 2017-09-07 CN CN201710802793.2A patent/CN109468765B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906579A (en) * | 2017-04-28 | 2017-06-30 | 浙江中捷缝纫科技有限公司 | A kind of spindle motor mounting structure of sewing machine |
| CN207176255U (en) * | 2017-09-07 | 2018-04-03 | 浙江中捷缝纫科技有限公司 | Sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109468765A (en) | 2019-03-15 |
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