Double-shaft motor oil supply mechanism for sewing machine and sewing machine

Abstract

The utility model relates to a double-shaft motor oil supply mechanism for a sewing machine and the sewing machine, and the double-shaft motor oil supply mechanism for the sewing machine comprises a double-shaft motor assembly which comprises a first output shaft and a second output shaft; the oil supply assembly is matched with the first output shaft; and the stitch length adjusting assembly is matched with the second output shaft. According to the technical scheme, the problem that in the prior art, lubricating oil conveying of a sewing machine is not stable is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of sewing machines, and more particularly, to a dual-axis motor oil supply mechanism and a sewing machine for 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, so as to interweave or sew together one or more layers of sewing materials. Sewing machines include sewing machines, stitching machines, embroidery machines, quilting machines, etc.

[0003] The sewing machine needs the reciprocating motion of the sewing needle and the rotary hook to cooperate, that is, there are multiple moving parts inside the sewing machine, and there is relative motion between the moving parts and other components or themselves, so lubrication is required to reduce friction and wear.

[0004] Some existing sewing machines connect the moving parts of the sewing needle to the oil supply pool, and transport the lubricating oil to the positions that need to be lubricated. Such a structure will cause that when the running speed of the sewing needle is slow, the lubricating oil power cannot reach the parts that need to be lubricated, resulting in increased friction and wear; when the running speed of the sewing needle is fast, the lubricating oil delivery volume is large, causing waste of lubricating oil and even polluting the sewing thread with lubricating oil. Utility Model Content

[0005] The present application provides a dual-axis motor oil supply mechanism and a sewing machine for a sewing machine to solve the problem of unstable lubricating oil delivery of the sewing machine in the prior art.

[0006] According to a dual-axis motor oil supply mechanism for a sewing machine provided by the present application, it includes: a dual-axis motor assembly, the dual-axis motor assembly includes a first output shaft and a second output shaft; an oil supply assembly, the oil supply assembly is matched with the first output shaft; a stitch pitch adjustment assembly, the stitch pitch adjustment assembly is matched with the second output shaft.

[0007] Further, the oil supply assembly includes: an oil supply transmission structure, the oil supply transmission structure is matched with the first output shaft; an oil storage tank structure, the oil storage tank structure includes an oil storage tank and an oil pump, at least part of the oil pump is located in the oil storage tank, and the oil pump is matched with the transmission structure.

[0008] Further, the oil supply transmission structure includes a first bevel gear, a second bevel gear, and a first transmission shaft. The first bevel gear is arranged on the first output shaft, the second bevel gear is arranged at the first end of the first transmission shaft, and the first bevel gear and the second bevel gear are meshed with each other.

[0009] Further, the oil supply transmission structure further includes a first gear, a second gear, and a second transmission shaft. The oil pump includes a centrifugal impeller. The first gear is disposed at the second end of the first transmission shaft, the second gear is disposed at the first end of the second transmission shaft, the centrifugal impeller is disposed at the second end of the second transmission shaft, and the first gear cooperates with the second gear.

[0010] Further, the dual-axis motor assembly further includes an oil shield. The first output shaft passes through the oil shield, and the first bevel gear and the dual-axis motor body are respectively located on both sides of the oil shield.

[0011] Further, the oil shield includes a baffle body and a convex plate. The baffle body is perpendicular to the first transmission shaft. The convex plate is located on the side of the baffle body facing the first bevel gear. In the direction from near the baffle body to far from the baffle body, the convex plate gradually slopes downward, and at least a part of the outer side of the baffle body is located above the second bevel gear.

[0012] Further, the stitch pitch adjustment assembly includes a needle bar shaft structure and a needle bar transmission structure. The needle bar shaft structure is connected to the second output shaft through the needle bar transmission structure.

[0013] Further, the needle bar transmission structure includes a first fastener, a first link, and a second link. The first fastener is connected to the second output shaft. The first end of the first link is rotatably connected to the first fastener. The second end of the first link is rotatably connected to the first end of the second link. The second end of the second link is rotatably connected to the needle bar shaft structure.

[0014] According to another aspect of the present application, there is also provided a sewing machine, which includes a dual-axis motor oil supply mechanism, and the dual-axis motor oil supply mechanism is the above-mentioned dual-axis motor oil supply mechanism.

[0015] Further, the sewing machine includes a sewing needle, and the stitch pitch adjustment assembly includes two needle bar shafts, which are respectively located on both sides of the sewing needle.

[0016] Applying the technical solution of the present application, the oil supply assembly is driven by the dual-axis motor assembly to supply oil to the sewing machine, and such an oil supply method is relatively stable. In addition, the first output shaft of the dual-axis motor assembly cooperates with the oil supply assembly, and the second output shaft cooperates with the stitch pitch adjustment assembly. In this way, one motor can drive the oil supply assembly and the stitch pitch adjustment assembly at the same time, without setting a dedicated motor for the oil supply assembly and a dedicated motor for the stitch pitch adjustment assembly. The above structure is compact and saves space. The technical solution of the present application effectively solves the problem of unstable lubricating oil transmission in the existing sewing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 The three-dimensional structural schematic diagram of the dual-axis motor oil supply mechanism according to the embodiment of the present application is shown;

[0020] Figure 2 It shows Figure 1 The three-dimensional structural schematic diagram of the dual-axis motor oil supply mechanism from another angle;

[0021] Figure 3 It shows Figure 1 The planar structural schematic diagram of the dual-axis motor oil supply mechanism.

[0022] Among them, the above-mentioned drawings include the following reference numerals:

[0023] 10. Dual-axis motor assembly; 11. First output shaft; 12. Second output shaft; 13. Oil-proof cover; 20. Oil supply assembly; 21. Oil supply transmission structure; 211. First transmission shaft; 212. Second transmission shaft; 22. Oil storage tank structure; 30. Stitch pitch adjustment assembly. Specific embodiments

[0024] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine the embodiments to elaborate on the present application in detail.

[0025] It should be pointed out that the following detailed descriptions are all illustrative and are intended to provide further explanations for the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0026] For ease of description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both orientations of "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and corresponding interpretations of the spatial relative descriptions used herein will be made.

[0027] As Figures 1 to 3 shown, the dual-axis motor oil supply mechanism for a sewing machine according to this embodiment includes: a dual-axis motor assembly 10 and an oil supply assembly 20. The dual-axis motor assembly 10 includes a first output shaft 11 and a second output shaft 12. The oil supply assembly 20 is cooperated with the first output shaft 11. A stitch pitch adjusting assembly 30, and the stitch pitch adjusting assembly 30 is cooperated with the second output shaft 12.

[0028] Applying the technical solution of this embodiment, the oil supply assembly 20 is driven by the dual-axis motor assembly 10 to supply oil to the sewing machine, and such an oil supply method is relatively stable. In addition, the first output shaft 11 of the dual-axis motor assembly 10 is cooperated with the oil supply assembly 20, and the second output shaft 12 is cooperated with the stitch pitch adjusting assembly 30. In this way, one motor can drive the oil supply assembly 20 and the stitch pitch adjusting assembly 30 at the same time, without a dedicated motor being provided for the oil supply assembly 20 and a dedicated motor being provided for the stitch pitch adjusting assembly 30. The above structure is compact and saves space. The technical solution of this embodiment effectively solves the problem of unstable lubricating oil delivery in the existing sewing machines.

[0029] It should be noted that in this embodiment, the second output shaft 12 is cylindrical, the first output shaft 11 is located inside the second output shaft 12, the first output shaft 11 and the second output shaft 12 are coaxially arranged, and the first output shaft 11 protrudes more from the motor body than the second output shaft 12, that is, the outer first output shaft 11 is longer than the outer second output shaft 12. The dual-axis motor of this embodiment is a dual-axis stacked motor.

[0030] As Figure 1 and Figure 2As shown, in the technical solution of this embodiment, the oil supply assembly 20 includes an oil supply transmission structure 21 and an oil storage tank structure 22. The oil supply transmission structure 21 is engaged with the first output shaft 11. The oil storage tank structure 22 includes an oil storage tank and an oil pump. At least part of the oil pump is located inside the oil storage tank, and the oil pump is engaged with the transmission structure. The oil storage tank can hold a relatively large amount of lubricating oil, and the oil pump can transport the lubricating oil in the oil storage tank to a suitable position. It should be noted that the oil storage tank has a lubricating oil outlet, and the lubricating oil is transported to the lubricating oil outlet through the oil pump. In this embodiment, the lubricating oil is transported to multiple parts that need lubrication through the lubricating oil outlet by centrifugal force.

[0031] As Figures 1 to 3 shown, in this embodiment, the oil supply transmission structure 21 includes a first bevel gear, a second bevel gear, and a first transmission shaft 211. The first bevel gear is arranged on the first output shaft 11, the second bevel gear is arranged at the first end of the first transmission shaft 211, and the first bevel gear and the second bevel gear are engaged with each other. The arrangement of the first bevel gear and the second bevel gear makes the axis of the first output shaft 11 and the axis of the first transmission shaft 211 arranged at an angle, avoiding interference between the first transmission shaft 211 and other components. In this embodiment, the axis of the first transmission shaft 211 is arranged at a right angle to the first output shaft 11.

[0032] As Figures 1 to 3 shown, in this embodiment, the oil supply transmission structure 21 further includes a first gear, a second gear, and a second transmission shaft 212. The oil pump includes a centrifugal impeller. The first gear is arranged at the second end of the first transmission shaft 211, the second gear is arranged at the first end of the second transmission shaft 212, the centrifugal impeller is arranged at the second end of the second transmission shaft 212, and the first gear is engaged with the second gear. The above structure is convenient to operate and compact. It should be noted that both the first gear and the second gear can be spur gears or helical gears. The above engagement between the first gear and the second gear can be that the first gear and the second gear are engaged with each other, or the first gear and the second gear are engaged through a transmission gear. The axis of the first transmission shaft 211 and the axis of the second transmission shaft 212 are parallel to each other.

[0033] As Figure 1 and Figure 2 shown, in the technical solution of this embodiment, the dual-axis motor assembly 10 further includes an oil shield 13. The first output shaft 11 passes through the oil shield 13, and the first bevel gear and the dual-axis motor main body are respectively located on both sides of the oil shield 13. The setting of the oil shield can effectively prevent the lubricating oil from affecting the motor main body of the dual-axis motor assembly. For example, the oil shield 13 can effectively prevent the lubricating oil from splashing onto the motor main body and causing dirt on the motor main body. A sealing structure, such as a sealing ring, is arranged between the oil shield 13 and the dual-axis motor assembly 10. A sealing structure is also arranged between the oil shield 13 and the sewing machine housing.

[0034] AsFigure 1 and Figure 2 As shown in Figure 2 , in the technical solution of this embodiment, the oil guard 13 includes a baffle main body and a convex plate. The baffle main body is perpendicular to the first transmission shaft 211. The convex plate is located on the side of the baffle main body facing the first bevel gear. In the direction from near the baffle main body to far from the baffle main body, the convex plate gradually slopes downward. At least part of the outer side of the baffle main body is located above the second bevel gear. The convex plate can prevent the lubricating oil of the first bevel gear and the second bevel gear from splashing upward to the motor main body. The convex plate has a predetermined height from the upper edge of the baffle. The convex plate slopes downward so that the lubricating oil can flow down from the convex plate. The convex plate extends to 2 / 3 of the upper part of the second bevel gear, that is, the convex plate can cover at least 2 / 3 of the second bevel gear. In this way, on the one hand, it can play a good role in preventing the lubricating oil from splashing onto the motor main body. In addition, it can also make the lubricating oil on the upper side of the convex plate flow back onto the second bevel gear even if there is any.

[0035] As Figure 1 and Figure 2 As shown in Figure 2 , in the technical solution of this embodiment, the stitch pitch adjusting assembly 30 includes a needle bar shaft structure and a needle bar transmission structure. The needle bar shaft structure is connected to the second output shaft 12 through the needle bar transmission structure. The second output shaft 12 drives the needle bar shaft structure to rotate a certain angle through the needle bar transmission structure, so that the sewing machine can feed objects forward and backward, and can also achieve the beneficial effect of adjusting the sewing pitch size. Specifically, when feeding objects (materials to be sewn), it can be driven by the needle driving shaft.

[0036] As Figures 1 to 3 As shown in Figures 1 to 3 , in the technical solution of this embodiment, the needle bar transmission structure includes a first fastener, a first connecting rod and a second connecting rod. The first fastener is connected to the second output shaft 12. The first end of the first connecting rod is rotatably connected to the first fastener. The second end of the first connecting rod is rotatably connected to the first end of the second connecting rod. The second end of the second connecting rod is rotatably connected to the needle bar shaft structure. The setting of the first fastener facilitates establishing a connection relationship between the first connecting rod and the needle bar shaft structure. The first connecting rod and the second connecting rod are provided instead of one or more connecting rods to avoid insufficient constraint or excessive constraint, so that the driving of the needle bar shaft structure by the needle driving shaft is limited. It should be noted that a second fastener is provided on the needle bar shaft structure. The second fastener is provided on the needle bar shaft. The second end of the second connecting rod is rotatably connected to the second fastener. The second connecting rod is indirectly connected to the needle bar shaft structure through the second fastener.

[0037] The present application also provides a sewing machine, which includes a dual-axis motor oil supply mechanism, and the dual-axis motor oil supply mechanism is the above-mentioned dual-axis motor oil supply mechanism. The sewing machine of the present application has better lubrication stability. It should be noted that not every lubrication-required part of the sewing machine is lubricated through this dual-axis motor oil supply mechanism, and other lubrication structures such as oil wicks can also be provided. According to the technical solution of the present application, the sewing machine includes a sewing needle, and the stitch length adjustment assembly 30 includes two rack shafts, and the two rack shafts are respectively located on both sides of the sewing needle. In this way, the adjustment of the stitch length of the stitch length adjustment assembly 30 is relatively stable.

[0038] The dual-axis motor assembly 10 is fixed on the sewing machine housing through fasteners. The dual-axis motor oil supply mechanism is driven by the dual-axis motor assembly 10 provided by itself. In this way, whether the sewing machine is running at high speed or low speed, the oil supply and lubrication of the sewing machine are relatively stable. The axis of the first output shaft 11 of the dual-axis motor assembly 10 is arranged at an angle with the axis of the first transmission shaft 211. This makes the setting of the oil supply mechanism of the sewing machine relatively flexible, and there is no need to set the dual-axis motor assembly 10 at a specific position, which may cause an increase in the local structure of the sewing machine. It should be noted that the oil storage tank has a lubricating oil outlet and a lubricating oil filling port. Generally, the lubricating oil outlet is arranged on the side wall of the oil storage tank, and the lubricating oil filling port is located on the top wall of the oil storage tank. A filter screen is also provided at the lubricating oil filling port, which can prevent impurities, dust, etc. from entering the oil storage tank. A rubber plug is provided at the lubricating oil filling port. When lubricating oil needs to be filled, the rubber plug is opened. When lubricating oil is not filled, the rubber plug covers the lubricating oil filling port. A sealing structure is provided between the oil storage tank and the second transmission shaft 212, which can effectively prevent the overflow and splashing of lubricating oil.

[0039] The first bevel gear and the second bevel gear are arranged inside the sewing machine housing, which can effectively prevent the first bevel gear and the second bevel gear from being contaminated by dust, fibers, thread ends, etc.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0042] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A dual-axis motor oil supply mechanism for a sewing machine, characterized in that, Comprising: A dual-axis motor assembly (10), the dual-axis motor assembly (10) including a first output shaft (11) and a second output shaft (12); An oil supply assembly (20), the oil supply assembly (20) being cooperated with the first output shaft (11); A stitch pitch adjustment assembly (30), the stitch pitch adjustment assembly (30) being cooperated with the second output shaft (12).

2. The dual-axis motor oil supply mechanism for a sewing machine according to claim 1, characterized in that, The oil supply assembly (20) includes: An oil supply transmission structure (2), the oil supply transmission structure (21) being cooperated with the first output shaft (11); An oil storage tank structure (22), the oil storage tank structure (22) including an oil storage tank and an oil pump, at least part of the oil pump being located within the oil storage tank, the oil pump being cooperated with the transmission structure.

3. The double-axis motor oil supply mechanism for a sewing machine according to claim 2, characterized in that, The oil supply transmission structure (21) includes a first bevel gear, a second bevel gear, and a first transmission shaft (211), the first bevel gear being provided on the first output shaft (11), the second bevel gear being provided at the first end of the first transmission shaft (211), and the first bevel gear and the second bevel gear being meshed with each other.

4. The double-axis motor oil supply mechanism for a sewing machine according to claim 3, characterized in that, The oil supply transmission structure (21) further includes a first gear, a second gear, and a second transmission shaft (212), the oil pump including a centrifugal impeller, the first gear being provided at the second end of the first transmission shaft (211), the second gear being provided at the first end of the second transmission shaft (212), the centrifugal impeller being provided at the second end of the second transmission shaft (212), and the first gear being cooperated with the second gear.

5. The dual-axis motor oil supply mechanism for a sewing machine according to claim 3, characterized in that, The dual-axis motor assembly (10) further includes an oil guard (13), the first output shaft (11) passing through the oil guard (13), the first bevel gear and the dual-axis motor main body being respectively located on both sides of the oil guard (1).

6. The double-axis motor oil supply mechanism for a sewing machine according to claim 5, characterized in that, The oil guard (13) includes a baffle main body and a convex plate, the baffle main body being perpendicular to the first transmission shaft (211), the convex plate being located on the side of the baffle main body facing the first bevel gear, and the convex plate gradually inclining downward in the direction from near the baffle main body to far from the baffle main body, at least part of the outer side of the baffle main body being located above the second bevel gear.

7. The dual-axis motor oil supply mechanism for a sewing machine according to any one of claims 1 to 6, characterized in that, The stitch pitch adjustment assembly (30) includes a yoke shaft structure and a yoke transmission structure, the yoke shaft structure being connected to the second output shaft (12) through the yoke transmission structure.

8. The dual-axis motor oil supply mechanism for a sewing machine according to claim 7, characterized in that, The yoke transmission structure includes a first fastener, a first connecting rod, and a second connecting rod, the first fastener being connected to the second output shaft (12), the first end of the first connecting rod being rotatably connected to the first fastener, the second end of the first connecting rod being rotatably connected to the first end of the second connecting rod, and the second end of the second connecting rod being rotatably connected to the yoke shaft structure.

9. A sewing machine, characterized in that, The sewing machine includes a dual-axis motor oil supply mechanism, the dual-axis motor oil supply mechanism being the dual-axis motor oil supply mechanism according to any one of claims 1 to 8.

10. The sewing machine according to claim 9, characterized in that, The sewing machine includes a sewing needle, and the stitch pitch adjustment assembly (30) includes two yoke shafts, the two yoke shafts being respectively located on both sides of the sewing needle.

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