Sewing machine oil box and sewing machine

Abstract

The oil box of the sewing machine comprises a box body with a containing cavity and a cover body arranged above the box body in a covering mode, the oil box of the sewing machine further comprises an oil quantity detection device, the oil quantity detection device comprises a first light-transmitting element, a transmitting element and a receiving element, the first light-transmitting element extends in the up-down direction, and the receiving element extends in the up-down direction. The upper part of the shell is connected with the cover body, and the lower part of the shell extends to the bottom of the accommodating cavity; the transmitting element is arranged on the cover body and is used for transmitting a detection light beam into the first light transmitting element; the receiving element is arranged on the cover body and is used for receiving the detection light beam emitted from the first light transmitting element; a reflection structure capable of reflecting a detection light beam is arranged on the lower portion of the first light-transmitting element, the reflection structure is arranged on a light emitting path of the emitting element, the receiving element is arranged on an emitting path of the detection light beam reflected by the reflection structure, and the detection device can save manpower and achieve real-time monitoring of the oil quantity.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to a sewing machine oil box and a sewing machine. Background Art

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material, interweaving or sewing one or more layers of sewing material. The oil box is an indispensable structure in the sewing machine. As the sewing machine continues to operate, the oil in the oil box is continuously consumed. To avoid the oil running out and the sewing machine parts wearing out due to lack of oil, the oil in the oil box needs to be monitored. The oil level of traditional sewing machines can only be observed and monitored manually by the human eye, which not only consumes a lot of manpower and cannot be monitored in real time, but also often forgets to check the oil level due to negligence. Utility Model Content

[0003] The purpose of the utility model is to provide a new sewing machine oil box.

[0004] To achieve the above-mentioned object, the technical solution adopted by the present invention is: a sewing machine oil box, comprising a box body having an accommodating cavity and a cover body arranged above the box body, and also comprising an oil quantity detection device, wherein the oil quantity detection device comprises:

[0005] a first light-transmitting element extending in the up-down direction, with its upper portion connected to the cover body and its lower portion extending to the bottom of the accommodating cavity;

[0006] an emitting element, disposed on the cover, and configured to emit a detection light beam into the first light-transmitting element;

[0007] a receiving element, disposed on the cover, for receiving the detection light beam emitted from the first light-transmitting element;

[0008] The lower part of the first light-transmitting element has a reflective structure capable of reflecting the detection light beam. The reflective structure is arranged on the light output path of the emitting element, and the receiving element is arranged on the output path of the detection light beam after being reflected by the reflective structure.

[0009] In some embodiments, the reflective structure includes a first reflective surface and a second reflective surface, the first reflective surface is arranged on the light output path of the emitting element, the second reflective surface is arranged on the output path of the detection light beam after being reflected from the first reflective surface, and the receiving element is arranged on the output path of the detection light beam after being reflected from the second reflective surface.

[0010] In some embodiments, the detection light beam reflected by the first reflecting surface extends in the horizontal direction; and / or, the first light-transmitting element has a virtual symmetry plane extending in the vertical direction, the transmitting element and the receiving element are symmetrically distributed relative to the virtual symmetry plane, and the first reflecting surface and the second reflecting surface are symmetrically distributed relative to the virtual symmetry plane.

[0011] In some embodiments, the angle between the first reflecting surface and the horizontal plane is 45°, and the angle between the second reflecting surface and the horizontal plane is 45°.

[0012] In some embodiments, the incident angle between the detection light beam emitted by the emitting element and the first reflective surface is greater than 35°; the incident angle between the detection light beam reflected by the first reflective surface and the second reflective surface is greater than 35°.

[0013] In some embodiments, the refractive index of the first light-transmitting element is 1.6; and / or the incident angle between the detection light beam emitted by the emitting element and the first reflecting surface is 45°; and / or the incident angle between the detection light beam after being reflected by the first reflecting surface and the second reflecting surface is 45°.

[0014] In some embodiments, the sewing machine oil box also includes a control system and an alarm, the control system is connected to the receiving element signal, the alarm is connected to the control system signal, and the control system is configured to receive the signal sent by the receiving element and drive the alarm to sound an alarm.

[0015] In some embodiments, the alarm is an alarm light, a second light-transmitting element is provided below the alarm light, a side wall of the box body is provided with a light-transmitting observation window, the second light-transmitting element is located in the accommodating cavity, the second light-transmitting element has an observation plane facing the observation window, along a first direction perpendicular to the observation window, the second light-transmitting element also has a third reflecting surface and a fourth reflecting surface located on the side of the observation plane away from the observation window, the third reflecting surface is arranged at the bottom of the second light-transmitting element, the third reflecting surface extends obliquely from top to bottom and along the first direction toward the observation plane, along the second direction perpendicular to the first direction, the fourth reflecting surface includes two respectively arranged on both sides of the observation plane, the fourth reflecting surface extends obliquely toward the observation plane along the first direction and the second direction at the same time.

[0016] In some embodiments, the first light-transmitting element is fixed on the cover body, and a receiving groove with an upward opening is provided on the upper portion of the first light-transmitting element. The cover body is provided with an opening connected to the receiving groove, and the transmitting element and the receiving element are inserted into the receiving groove through the opening.

[0017] In some embodiments, an oil filling hole is provided on the side wall of the box body, an oil drain hole is provided on the bottom of the box body, an oil drain pipe is provided in the box body, the oil drain pipe extends in the up and down directions, the lower part of the oil drain pipe is connected to the oil drain hole, and the top of the oil drain pipe is located below the oil filling hole.

[0018] Another object of the present invention is to provide a new sewing machine.

[0019] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a sewing machine, comprising the above-mentioned sewing machine oil box.

[0020] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the sewing machine of the present invention has an oil quantity detection device in its oil box, which emits a detection light beam into the first light-transmitting element through the emitting element. The reflectivity of the detection light beam at the reflecting structure is different when the oil quantity is different, and the energy of the detection light beam received by the receiving element is also different, so as to judge the amount of oil. Compared with human observation and manual monitoring, it greatly saves manpower and can achieve real-time monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attachment Figure 1 This is a schematic diagram of the three-dimensional structure of a sewing machine according to a specific embodiment of the present invention;

[0022] Attachment Figure 2 For attachment Figure 1 Schematic diagram of the sewing machine oil box;

[0023] Attachment Figure 3 For attachment Figure 2 Schematic diagram of the decomposition;

[0024] Attachment Figure 4 For attachment Figure 3 Schematic diagram of the middle part structure;

[0025] Attachment Figure 5 For attachment Figure 4 Side view of

[0026] Attachment Figure 6 For attachment Figure 4 Schematic diagram of longitudinal section after assembly;

[0027] Attachment Figure 7 This is a schematic diagram of the working principle of the oil level detection device when the oil level is sufficient;

[0028] Attachment Figure 8 The diagram is a schematic diagram of the working principle of the oil level detection device when the oil level is insufficient;

[0029] Attachment Figure 9 It is a longitudinal cross-sectional schematic diagram of the box body;

[0030] Among them: 1. Box body; 10. Accommodating cavity; 11. Observation window; 12. Oil filling hole; 13. Oil drain hole; 14. Oil drain pipe; 15. Hole plug; 2. Cover body; 211. First opening; 212. Second opening; 213. Third opening; 22. Perforation; 3. First light-transmitting element; 31. Main body; 311. First groove; 312. Second groove; 321. First reflecting surface; 322. Second reflecting surface; 4. Transmitting element; 5. Receiving element; 6. Alarm; 7. Second light-transmitting element; 71. Observation plane; 72. Third reflecting surface; 73. Fourth reflecting surface; 81. Oil pipe; 82. Oil line; 83. Sealing plug. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments to make the advantages and features of the present invention easier for those skilled in the art to understand. Obviously, the embodiments described in this application are only part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0032] See also Figure 1 A sewing machine shown in FIG. 2 includes a sewing machine oil box for supplying and recovering oil. Referring to FIG. 2 , the oil box includes a box body 1 having a receiving cavity 10 and a cover 2 disposed over the box body 1. The receiving cavity 10 is used to hold oil. The oil box also includes an oil level detection device for detecting the amount of oil in the oil box, thereby providing a timely reminder when the oil level is low. The oil level detection device includes a first light-transmitting element 3, a transmitting element 4, and a receiving element 5. The first light-transmitting element 3 extends in the vertical direction, with its upper portion connected to the cover 2 and its lower portion extending to the bottom of the receiving cavity 10. The transmitting element 4 is disposed on the cover 2 and is configured to emit a detection light beam into the first light-transmitting element 3. The receiving element 5 is disposed on the cover 2 and is spaced horizontally from the transmitting element 4. The receiving element 5 is configured to receive the detection light beam emitted from the first light-transmitting element 3. The lower part of the first light-transmitting element 3 has a reflective structure capable of reflecting the detection light beam. The reflective structure is arranged on the light output path of the emitting element 4. The receiving element 5 is arranged on the output path of the detection light beam after being reflected by the reflective structure.

[0033] When the oil level in the oil box varies and the medium surrounding the reflective structure varies, the reflectivity of the detection beam at the reflective structure also varies. The receiving element 5 can determine the oil level based on whether or not the detection beam is received, or the energy intensity of the received detection beam. In some preferred embodiments, the first light-transmitting element 3 utilizes a transparent prism to reduce energy loss during the transmission of the detection beam. In some preferred embodiments, the transmitting element 4 transmits infrared light toward the first light-transmitting element 3, and the receiving element 5 receives the infrared light.

[0034] In some preferred embodiments, the first light-transmitting element 3 is made of a material with a refractive index similar to that of the oil. When the oil level is sufficient, the reflective structure is immersed in the oil, and the detection beam is barely reflected by the reflective structure. Instead, it continues to propagate forward in the incident direction. Consequently, the receiving element 5 does not receive the detection beam, or the energy of the received detection beam is low and below a preset value, thereby determining that the oil level is sufficient. When the oil level is insufficient, there is no oil around the reflective structure, the reflectivity of the detection beam increases, and the energy of the detection beam received by the receiving element 5 increases. When the energy of the detection beam exceeds a preset value, a result of insufficient oil level is obtained. In some preferred embodiments, by adjusting the incident angle between the detection beam and the reflective structure to be greater than a critical angle, the detection beam is fully reflected by the reflective structure when the oil level is insufficient. The energy of the detection beam received by the receiving element 5 is substantially equal to that emitted by the emitting element 4, making it easier to determine whether the oil level is insufficient. The term "substantially equal" here accounts for the inevitable energy loss during beam propagation.

[0035] In this embodiment, the reflective structure includes a main body 31, a first reflective surface 321, and a second reflective surface 322. The first reflective surface 321 and the second reflective surface 322 are disposed at the lower portion of the main body 31, intersecting the lower portion of the first reflective surface 321 and the second reflective surface 322. The first reflective surface 321 is disposed on the light output path of the emitting element 4, and the second reflective surface 322 is disposed on the output path of the detection beam after reflection from the first reflective surface 321. The receiving element 5 is disposed on the output path of the detection beam after reflection from the second reflective surface 322. The detection beam emitted by the emitting element 4 is sequentially reflected by the first reflective surface 321 and the second reflective surface 322 before exiting the first light-transmitting element 3. By disposing the first reflective surface 321 and the second reflective surface 322 and adjusting the angle between the first reflective surface 321 and the second reflective surface 322, the space occupied by the detection beam can be adjusted, thereby reducing the volume of the first light-transmitting element 3 and the space occupied by the oil box. In some embodiments, the reflective structure includes multiple reflective surfaces, and the multiple reflective surfaces are distributed at different heights. The detection light beam is emitted from the first light-transmitting element 3 after multiple reflections. Such a setting can make a more accurate judgment on the oil level.

[0036] In some preferred embodiments, the detection light beam reflected by the first reflection surface 321 extends in the horizontal direction. Figure 8 As shown, the incident point A of the detection light beam on the first reflective surface 321 and the incident point B on the second reflective surface 322 are at the same height. In this way, it can be determined whether the oil level exceeds the incident point A (or incident point B) based on the result received by the receiving element 5.

[0037] In some preferred embodiments, the incident angle between the detection beam emitted by the emitting element 4 and the first reflective surface 321 is greater than 35°; the incident angle between the detection beam after being reflected by the first reflective surface 321 and the second reflective surface 322 is greater than 35°. Thus, when the oil level is below the incident point A, the detection beam is fully reflected by the first reflective surface 321. When the oil level is below the incident point B, the detection beam is fully reflected by the second reflective surface 322.

[0038] In this embodiment, the refractive index of the first light-transmitting element is 1.6, and the refractive index of air is 1. In this embodiment, the first light-transmitting element 3 has a virtual symmetry plane extending in the vertical direction. The emitting element 4 and the receiving element 5 are symmetrically arranged with respect to the virtual symmetry plane. The first reflecting surface 321 and the second reflecting surface 322 are symmetrically arranged with respect to the virtual symmetry plane. The angle between the first reflecting surface 321 and the horizontal plane is 45°, and the angle between the second reflecting surface 322 and the horizontal plane is 45°. The emitting element 4 emits a detection light beam downward. The incident angle between the detection light beam emitted by the emitting element 4 and the first reflecting surface 321 is 45°. The incident angle between the detection light beam reflected by the first reflecting surface 321 and the second reflecting surface is also 45°. After being reflected by the second reflecting surface 322, the detection light beam can be emitted upward in the vertical direction from the first light-transmitting element 3 and enter the receiving element 5.

[0039] In this embodiment, the upper portion of the first light-transmitting element 3 is approximately in the shape of a quadrangular prism. At the lower portion of the first light-transmitting element 3, two opposing side surfaces converge to form a pointed tip. These two converging side surfaces constitute the aforementioned first reflective surface 321 and second reflective surface 322. In some embodiments, the lower portion of the first light-transmitting element 3 is in the shape of a pyramid. In other embodiments, the upper portion of the first light-transmitting element 3 is in the shape of a cylinder, and the lower portion of the first light-transmitting element 3 is in the shape of a cone.

[0040] In this embodiment, the box body 1 and the cover body 2 are fixedly connected and sealed to prevent oil leakage. The first light-transmitting element 3 is fixed to the cover body 2. The upper part of the first light-transmitting element 3 is provided with a receiving groove with an upward opening. The cover body 2 is provided with an opening connected to the receiving groove. The transmitting element 4 and the receiving element 5 are inserted into the receiving groove through the opening. For details, see Figure 3 、 Figure 6 As shown, the receiving slot is divided into a first slot 311 and a second slot 312. The cover 2 is provided with a first opening 211 and a second opening 212. The emitting element 4 is inserted into the first slot 311 through the first opening 211, and the receiving element 5 is inserted into the second slot 312 through the second opening 212. Separating the emitting element 4 and the receiving element 5 prevents them from interfering with each other. Placing the emitting element 4 and the receiving element 5 in the receiving slot protects them from the external environment. The plug-in connection also facilitates repair or replacement of the emitting element 4 or the receiving element 5.

[0041] In some embodiments, the sewing machine oil box is also provided with a control system and an alarm 6. The control system is signal-connected to the receiving element 5, and the control system is signal-connected to the alarm 6. When the receiving element 5 receives a detection light beam or when the energy of the detection light beam received by the receiving element 5 is greater than a preset value, the receiving element 5 sends a signal to the control system, and the control system drives the alarm 6 to sound an alarm.

[0042] In this embodiment, see Figures 3 to 5 As shown, the alarm device 6 is a warning light. A second light-transmitting element 7 is provided below the alarm light. A light-transmitting observation window 11 is provided on one sidewall of the box body 1. The second light-transmitting element 7 is located within the accommodating cavity 10. The second light-transmitting element 7 has an observation plane 71 facing the observation window 11. Along a first direction perpendicular to the observation window 11, the second light-transmitting element 7 further comprises a third reflective surface 72 and a fourth reflective surface 73 located on the side of the observation plane 71 facing away from the observation window 11. The third reflective surface 72 is provided below the second light-transmitting element 7 and extends obliquely from top to bottom along the first direction toward the observation plane 71. Along a second direction perpendicular to the first direction, the fourth reflective surface 73 includes two surfaces located on either side of the observation plane 71. The fourth reflective surface 73 extends obliquely toward the observation plane 71 along both the first and second directions. When the alarm light receives a signal and illuminates, the third and fourth reflective surfaces 72 and 73 reflect the light beam emitted by the alarm light toward the observation plane 71, making it easier for personnel to observe the alarm signal.

[0043] In this embodiment, a third groove (not shown in the figure) with an opening facing upward is provided on the upper portion of the second light-transmitting element 7. Figure 3 As shown, the cover 2 is provided with a third opening 213, which communicates with the third slot, and the alarm 6 is inserted into the third slot through the third opening 213. In this embodiment, along the first direction, the second light-transmitting element 7 is located between the observation window 11 and the first light-transmitting element 3.

[0044] In this embodiment, an oil filling hole 12 is opened on the side wall of the box body 1 for adding oil to the box body 1. Figure 3 As shown, the oil filling hole 12 is set at the observation window 11, which is convenient for observing the amount of oil injected. The oil box also includes a hole plug 15 for blocking the oil filling hole 12 to prevent the oil from leaking from the oil filling hole 12 during use. In this embodiment, see Figure 9As shown, an oil drain hole 13 is formed at the bottom of the box body 1, and an oil drain pipe 14 is provided inside the box body 1. The oil drain pipe 14 extends in the vertical direction, with the lower portion of the oil drain pipe 14 connected to the oil drain hole 13, and the top of the oil drain pipe 14 is located below the oil filling hole 12. Specifically, the oil box has a maximum liquid level, and the top of the oil drain pipe 14 is aligned with the maximum liquid level. When the oil level in the oil box exceeds the maximum liquid level, excess oil automatically flows through the oil drain pipe 14 and eventually out of the oil box through the oil drain hole 13.

[0045] In this embodiment, see Figure 3 As shown, the cover body 2 is provided with a plurality of through-holes 22, the oil pipe 81 extends from the through-hole 22 into the accommodating chamber 10, the oil line 82 extends from the oil pipe 81 to the bottom of the accommodating chamber 10, and other mechanisms of the sewing machine extract oil through the oil line 82. A sealing plug 83 is provided between the oil pipe 81 and the through-hole 22 to form a seal to prevent oil from leaking from the through-hole 22.

[0046] In this embodiment, see Figure 9 As shown, an annular observation area is provided on the outer side of the observation window 11. The surface of the observation area located in the accommodating cavity 10 is uneven. When the oil fills the uneven area, the observation area reached by the oil observed on the outside becomes clear, and the inclined liquid level boundary line can be seen obliquely from the outside.

[0047] The working principle of the oil level detection device is as follows: the detection beam is emitted downward by the emitting element 4, and the detection beam enters the first light-transmitting element 3 and is incident on the first reflecting surface 321. When the liquid level of the oil in the oil box is higher than the incident point A, Figure 7 As shown, since the refractive index of the first light-transmitting element 3 is similar to that of the oil, the detection beam continues to transmit downward in the vertical direction. At this time, almost no detection beam is reflected to the second reflective surface 322, and the receiving element 5 also hardly receives the detection beam. The control system will not drive the alarm to sound an alarm. When the liquid level of the oil in the oil box is lower than the incident point A, see Figure 8 As shown, the detection light beam is totally reflected at the first reflection surface 321, and the detection light beam is incident on the second reflection surface 322 in the horizontal direction. Since the incident point A and the incident point B are at the same height, the detection light beam incident on the second reflection surface 322 will also be totally reflected. The detection light beam is emitted from the first light-transmitting element 3 in the vertical direction and is received by the receiving element 5. Since both reflections are not totally reflected, the energy of the detection light beam is almost not damaged. After receiving the detection light beam with this energy value, the receiving element 5 sends a signal to the control system, and the control system drives the alarm to sound an alarm, thereby reminding the staff to replenish the oil in time.

[0048] In summary, the sewing machine of this embodiment has an oil quantity detection device in its oil box. The detection device emits a detection light beam into the first light-transmitting element 3 through the emitting element 4. The reflectivity of the detection light beam at the first reflecting surface 321 and the second reflecting surface 322 is different when the oil quantity is different, and the energy of the detection light beam received by the receiving element 5 is also different. In this way, the amount of oil is judged. Compared with human observation and manual monitoring, it greatly saves manpower and can achieve real-time monitoring.

[0049] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A sewing machine oil box, comprising a box body having an accommodating cavity and a cover disposed above the box body, characterized in that: The oil level detection device is further included, and the oil level detection device includes: a first light-transmitting element extending in the up-down direction, with its upper portion connected to the cover body and its lower portion extending to the bottom of the accommodating cavity; an emitting element, disposed on the cover, and configured to emit a detection light beam into the first light-transmitting element; a receiving element, disposed on the cover, for receiving the detection light beam emitted from the first light-transmitting element; The lower part of the first light-transmitting element has a reflective structure capable of reflecting the detection light beam. The reflective structure is arranged on the light output path of the emitting element, and the receiving element is arranged on the output path of the detection light beam after being reflected by the reflective structure.

2. The sewing machine oil box according to claim 1, characterized in that: The reflective structure includes a first reflective surface and a second reflective surface. The first reflective surface is arranged on the light output path of the emitting element, the second reflective surface is arranged on the output path of the detection light beam after being reflected from the first reflective surface, and the receiving element is arranged on the output path of the detection light beam after being reflected from the second reflective surface.

3. The sewing machine oil box according to claim 2, characterized in that: The detection light beam reflected by the first reflecting surface extends in the horizontal direction; and / or the first light-transmitting element has a virtual symmetry plane extending in the vertical direction, the transmitting element and the receiving element are symmetrically distributed relative to the virtual symmetry plane, and the first reflecting surface and the second reflecting surface are symmetrically distributed relative to the virtual symmetry plane.

4. The sewing machine oil box according to claim 2, characterized in that: The included angle between the first reflecting surface and the horizontal plane is 45°, and the included angle between the second reflecting surface and the horizontal plane is 45°.

5. The sewing machine oil box according to claim 2, characterized in that: The incident angle between the detection light beam emitted by the emitting element and the first reflecting surface is greater than 35°; the incident angle between the detection light beam reflected by the first reflecting surface and the second reflecting surface is greater than 35°.

6. The sewing machine oil box according to claim 5, characterized in that: The refractive index of the first light-transmitting element is 1.6; and / or the incident angle between the detection light beam emitted by the emitting element and the first reflecting surface is 45°; and / or the incident angle between the detection light beam after being reflected by the first reflecting surface and the second reflecting surface is 45°.

7. The sewing machine oil box according to claim 1, characterized in that: The sewing machine oil box also includes a control system and an alarm. The control system is connected to the receiving element signal, and the alarm is connected to the control system signal. The control system is configured to receive the signal from the receiving element and drive the alarm to sound an alarm.

8. The sewing machine oil box according to claim 7, characterized in that: The alarm is an alarm light, and a second light-transmitting element is provided below the alarm light. A light-transmitting observation window is provided on one side wall of the box body. The second light-transmitting element is located in the accommodating cavity. The second light-transmitting element has an observation plane facing the observation window. Along a first direction perpendicular to the observation window, the second light-transmitting element also has a third reflecting surface and a fourth reflecting surface located on the side of the observation plane away from the observation window. The third reflecting surface is provided at the bottom of the second light-transmitting element. The third reflecting surface extends obliquely from top to bottom and along the first direction toward the observation plane. Along a second direction perpendicular to the first direction, the fourth reflecting surface includes two reflecting surfaces arranged on both sides of the observation plane. The fourth reflecting surface extends obliquely toward the observation plane along the first direction and the second direction at the same time.

9. The sewing machine oil box according to claim 1, characterized in that: The first light-transmitting element is fixed on the cover body, and a receiving groove with an upward opening is provided on the upper portion of the first light-transmitting element. The cover body is provided with an opening communicating with the receiving groove, and the emitting element and the receiving element are inserted into the receiving groove through the opening. And / or, an oil filling hole is opened on the side wall of the box body, an oil drain hole is opened on the bottom of the box body, an oil drain pipe is provided in the box body, the oil drain pipe extends in the up and down directions, the lower part of the oil drain pipe is connected to the oil drain hole, and the top of the oil drain pipe is located below the oil filling hole.

10. A sewing machine, characterized in that: The invention comprises a sewing machine oil box according to any one of claims 1 to 9.

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