阅读说明：本技术 轴组机构及具有其的缝纫机 (Shaft set mechanism and sewing machine with same ) 是由 陈盛薪 钟海明 陈伟伟 何启跃 楼俏军 于 2019-01-22 设计创作，主要内容包括：本发明提供了一种轴组机构及具有其的缝纫机,轴组机构包括：传动轴；油封,油封套设在传动轴上,以对传动轴上的油液进行阻挡；其中,传动轴上设置有隔油部,隔油部环绕传动轴的轴线设置,以通过隔油部将传动轴分隔为第一轴段和第二轴段,并通过隔油部阻隔润滑油在第一轴段的外周面和第二轴段的外周面之间的流动,以解决现有技术中的缝纫机的上轴机构容易出现漏油的问题。(The invention provides a shaft set mechanism and a sewing machine with the same, wherein the shaft set mechanism comprises: a drive shaft; the oil seal is arranged on the transmission shaft in an oil seal sleeve so as to block oil on the transmission shaft; the transmission shaft is provided with an oil separation part, the oil separation part surrounds the axis of the transmission shaft to separate the transmission shaft into a first shaft section and a second shaft section through the oil separation part, and the oil separation part separates lubricating oil from flowing between the outer peripheral surface of the first shaft section and the outer peripheral surface of the second shaft section, so that the problem of oil leakage of an upper shaft mechanism of a sewing machine in the prior art is solved.)

1. A shaft assembly mechanism, comprising:

a drive shaft (10);

the oil seal (20), the said oil seal (20) is set up on the said drive shaft (10), in order to block the fluid on the said drive shaft (10);

the transmission shaft (10) is provided with an oil separation part (30), the oil separation part (30) is arranged around the axis of the transmission shaft (10) so as to divide the transmission shaft (10) into a first shaft section (11) and a second shaft section (12) through the oil separation part (30), and the oil separation part (30) is used for separating the flow of lubricating oil between the peripheral surface of the first shaft section (11) and the peripheral surface of the second shaft section (12).

2. The shaft assembly mechanism according to claim 1, characterized in that, in a radial direction of the transmission shaft (10), a predetermined oil separation distance is provided between an outer circumferential surface of the oil separation portion (30) and an outer circumferential surface of the transmission shaft (10) to block an oil path between the first shaft section (11) and the second shaft section (12) by the predetermined oil separation distance.

3. The shaft assembly mechanism according to claim 1, wherein the oil separation portion (30) is an oil separation groove provided on the transmission shaft (10), the oil separation groove is recessed in a radial direction of the transmission shaft (10), and an outer peripheral surface of the oil separation portion (30) is a groove bottom surface of the oil separation groove.

4. A shaft assembly according to claim 3, characterised in that the oil barrier is an annular groove around the axis of the drive shaft (10).

5. The shaft assembly mechanism according to claim 1, wherein the oil-separating portion (30) is an oil-separating flange provided on the transmission shaft (10), the oil-separating flange being protruded in a radial direction of the transmission shaft (10), and an outer peripheral surface of the oil-separating portion (30) is a surface of the oil-separating flange on a side away from an axis of the transmission shaft (10).

6. The shaft assembly arrangement according to claim 5, characterized in that the oil-separating flange is an annular flange arranged around the axis of the drive shaft (10), which annular flange is integrally formed with the drive shaft (10).

7. The shaft assembly mechanism according to claim 1, wherein the oil separator (30) is an annular structure, and the oil separator (30) is detachably sleeved on the transmission shaft (10).

8. The shaft assembly mechanism according to claim 7, wherein the transmission shaft (10) is provided with a mounting groove, the oil separation part (30) is provided with a mounting protrusion matched with the mounting groove, and the mounting protrusion is embedded in the mounting groove; wherein, the mounting groove and the mounting protrusion are both annular.

9. The shaft assembly mechanism according to claim 7, wherein the oil separator (30) comprises a plurality of arc-shaped segments, and the plurality of arc-shaped segments are sequentially spliced along the circumferential direction of the oil separator (30) to form the oil separator (30).

10. The shaft assembly mechanism according to any one of claims 1 to 9, wherein the oil-separating portion (30) is plural, and the plural oil-separating portions (30) are provided at intervals in an axial direction of the drive shaft (10).

11. The shaft set mechanism according to any one of claims 1 to 9, further comprising a shaft sleeve (40), wherein the shaft sleeve (40) is sleeved on the transmission shaft (10), and the oil separation portion (30) is located between the shaft sleeve (40) and the oil seal (20).

12. A sewing machine comprising a machine housing (60) and a shaft assembly mechanism provided on the machine housing (60), characterized in that the shaft assembly mechanism is the shaft assembly mechanism of any one of claims 1 to 11, the transmission shaft (10) of which is the upper shaft of the sewing machine.

Technical Field

The invention relates to the field of sewing, in particular to a shaft set mechanism and a sewing machine with the same.

Background

A sewing machine is a machine that uses one or more sewing threads to form one or more sewing threads on a work piece and one or more stitches on the work piece to interlace or stitch one or more layers of the work piece together.

The sewing machine can sew fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewed stitches are neat, beautiful, flat and firm, the sewing speed is high, and the use is simple and convenient.

In the prior art, an upper shaft of a sewing machine prevents the penetration of lubricating oil through an oil seal, but after long-term running-in, the lubricating oil is difficult to ensure to slightly seep out from a lip of the oil seal.

Disclosure of Invention

The invention mainly aims to provide a shaft set mechanism and a sewing machine with the same, and aims to solve the problem that an upper shaft mechanism of the sewing machine in the prior art is prone to oil leakage.

In order to achieve the above object, according to one aspect of the present invention, there is provided a shaft set mechanism including: a drive shaft; the oil seal is arranged on the transmission shaft in an oil seal sleeve so as to block oil on the transmission shaft; the transmission shaft is provided with an oil separation part, the oil separation part surrounds the axis of the transmission shaft to separate the transmission shaft into a first shaft section and a second shaft section through the oil separation part, and the oil separation part separates the flow of lubricating oil between the outer peripheral surface of the first shaft section and the outer peripheral surface of the second shaft section.

Further, along the radial direction of the transmission shaft, a preset oil separation distance is reserved between the outer peripheral surface of the oil separation part and the outer peripheral surface of the transmission shaft, so that the oil path between the first shaft section and the second shaft section is blocked through the preset oil separation distance.

Furthermore, the oil separation part is an oil separation groove formed in the transmission shaft, the oil separation groove is recessed along the radial direction of the transmission shaft, and the peripheral surface of the oil separation part is the groove bottom surface of the oil separation groove.

Further, the oil separating groove is provided with an annular groove around the axis of the transmission shaft.

Further, the oil separation part is an oil separation flange arranged on the transmission shaft, the oil separation flange protrudes along the radial direction of the transmission shaft, and the outer peripheral surface of the oil separation part is a surface of one side, away from the axis of the transmission shaft, of the oil separation flange.

Further, the oil separation flange is an annular flange arranged around the axis of the transmission shaft, and the annular flange and the transmission shaft are integrally formed.

Further, the oil separation part is of an annular structure, and the oil separation part is detachably sleeved on the transmission shaft.

Further, a mounting groove is formed in the transmission shaft, a mounting protrusion matched with the mounting groove is formed in the oil separation part, and the mounting protrusion is embedded in the mounting groove; wherein, mounting groove and mounting protrusion are annular.

Further, oil removal portion includes a plurality of segmental arcs, and a plurality of segmental arcs splice in proper order in order to constitute oil removal portion along oil removal portion's circumference.

Further, the oil removal portion is a plurality of, and a plurality of oil removal portions set up along the axial interval of transmission shaft.

Further, the shaft set mechanism further comprises shaft sleeves, the shaft sleeves are sleeved on the transmission shaft, and the oil separation part is located between the shaft sleeves and the oil seal.

According to another aspect of the present invention, there is provided a sewing machine, including a housing and a shaft set mechanism disposed on the housing, the shaft set mechanism being the above-mentioned shaft set mechanism, and a transmission shaft of the shaft set mechanism being an upper shaft of the sewing machine.

By applying the technical scheme of the invention, the shaft set mechanism comprises a transmission shaft and an oil seal, and the oil seal is sleeved on the transmission shaft so as to block oil on the transmission shaft; the transmission shaft is provided with an oil separation part, the oil separation part surrounds the axis of the transmission shaft to separate the transmission shaft into a first shaft section and a second shaft section through the oil separation part, and the oil separation part separates the flow of lubricating oil between the outer peripheral surface of the first shaft section and the outer peripheral surface of the second shaft section. The structure is simple, the processing and the installation are convenient, wherein the transmission shaft is an upper shaft of the sewing machine, and the oil separation part is arranged on the transmission shaft, so that the problem of oil leakage easily occurring in an upper shaft mechanism of the sewing machine in the prior art is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic structural view of an embodiment of a shaft set mechanism according to the present invention;

FIG. 2 shows a cross-sectional view of a shaft set mechanism according to the present invention;

fig. 3 shows an enlarged view of part a according to fig. 2; and

fig. 4 shows a schematic structural view of an embodiment of an oil seal according to the present invention.

Wherein the figures include the following reference numerals:

10. a drive shaft; 20. oil sealing; 30. an oil removal portion; 11. a first shaft section; 12. a second shaft section; 40. a shaft sleeve; 60. a casing.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The present invention provides a shaft assembly mechanism, please refer to fig. 1 to 4, which includes a transmission shaft 10; the oil seal 20 is sleeved on the transmission shaft 10, and the oil seal 20 is used for blocking oil on the transmission shaft 10; wherein, the transmission shaft 10 is provided with an oil separation portion 30, the oil separation portion 30 is arranged around the axis of the transmission shaft 10 to divide the transmission shaft 10 into a first shaft section 11 and a second shaft section 12 through the oil separation portion 30, and the flow of the lubricating oil between the outer peripheral surface of the first shaft section 11 and the outer peripheral surface of the second shaft section 12 is blocked through the oil separation portion 30.

The shaft set mechanism provided by the invention comprises a transmission shaft 10 and an oil seal 20, wherein the oil seal 20 is sleeved on the transmission shaft 10 so as to block oil on the transmission shaft 10; wherein, the transmission shaft 10 is provided with an oil separation portion 30, the oil separation portion 30 is arranged around the axis of the transmission shaft 10 to divide the transmission shaft 10 into a first shaft section 11 and a second shaft section 12 through the oil separation portion 30, and the flow of the lubricating oil between the outer peripheral surface of the first shaft section 11 and the outer peripheral surface of the second shaft section 12 is blocked through the oil separation portion 30. The shaft set mechanism is simple in structure and convenient to process and install, the transmission shaft 10 is an upper shaft of the sewing machine, and the oil separation part 30 is arranged on the transmission shaft 10, so that the problem that oil leakage easily occurs in the upper shaft mechanism of the sewing machine in the prior art is solved.

Wherein, the outer peripheral surface of the first shaft section 11 and the outer peripheral surface of the second shaft section 12 are both surfaces arranged around the axis of the transmission shaft 10.

In order to ensure the oil-separating effect, a predetermined oil-separating distance is provided between the outer circumferential surface of the oil-separating portion 30 and the outer circumferential surface of the transmission shaft 10 in the radial direction of the transmission shaft 10 to separate the oil path between the first shaft section 11 and the second shaft section 12 by the predetermined oil-separating distance.

The outer peripheral surface of the oil barrier 30 and the outer peripheral surface of the transmission shaft 10 are both surfaces disposed around the axis of the transmission shaft 10.

In the first embodiment, the oil-separating portion 30 is an oil-separating groove formed on the transmission shaft 10, the oil-separating groove is recessed in the radial direction of the transmission shaft 10, and the outer peripheral surface of the oil-separating portion 30 is the groove bottom surface of the oil-separating groove.

Preferably, the oil barrier is an annular groove around the axis of the drive shaft 10 for ease of machining.

In the second embodiment of the present invention, the oil-separating portion 30 is an oil-separating flange provided on the transmission shaft 10, the oil-separating flange protrudes in the radial direction of the transmission shaft 10, and the outer peripheral surface of the oil-separating portion 30 is a surface of the oil-separating flange on the side away from the axis of the transmission shaft 10.

Preferably, the oil-separating flange is an annular flange disposed around the axis of the drive shaft 10, the annular flange being integrally formed with the drive shaft 10.

In a third embodiment of the present invention, the oil-separating portion 30 is an annular structure, and the oil-separating portion 30 is detachably sleeved on the transmission shaft 10.

Specifically, a mounting groove is formed in the transmission shaft 10, a mounting protrusion matched with the mounting groove is formed in the oil separation portion 30, and the mounting protrusion is embedded in the mounting groove; wherein, mounting groove and mounting protrusion are annular.

The oil separating portion 30 includes a plurality of arc-shaped sections, which are sequentially spliced along the circumferential direction of the oil separating portion 30 to constitute the oil separating portion 30.

Specifically, the oil barriers 30 are plural, and the plural oil barriers 30 are provided at intervals in the axial direction of the propeller shaft 10.

In order to further prevent the lubricating oil on the transmission shaft 10 from leaking into the casing, the shaft set mechanism further comprises a shaft sleeve 40, the shaft sleeve 40 is sleeved on the transmission shaft 10, and the oil separation part 30 is located between the shaft sleeve 40 and the oil seal 20.

Preferably, the width of the oil barrier is between one fiftieth and one thirty-th of the length of the propeller shaft 10 in the axial direction of the propeller shaft 10.

The invention also provides a sewing machine, which comprises a machine shell 60 and a shaft set mechanism arranged on the machine shell 60, wherein the shaft set mechanism is the shaft set mechanism of the embodiment, and a transmission shaft 10 of the shaft set mechanism is an upper shaft of the sewing machine.

According to the invention, the oil separation part is additionally arranged on the upper shaft and is positioned between the rear sleeve of the upper shaft and the oil seal, lubricating oil on the shaft is thrown away through the rotation of the upper shaft, and the lubricating oil flowing along the upper shaft returns to the machine head through the oil return hole.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the shaft set mechanism comprises a transmission shaft 10 and an oil seal 20, wherein the oil seal 20 is sleeved on the transmission shaft 10 to block oil on the transmission shaft 10; wherein, the transmission shaft 10 is provided with an oil separation portion 30, the oil separation portion 30 is arranged around the axis of the transmission shaft 10 to divide the transmission shaft 10 into a first shaft section 11 and a second shaft section 12 through the oil separation portion 30, and the flow of the lubricating oil between the outer peripheral surface of the first shaft section 11 and the outer peripheral surface of the second shaft section 12 is blocked through the oil separation portion 30. The structure is simple, the processing and the installation are convenient, the transmission shaft 10 is an upper shaft of the sewing machine, and the oil separation part 30 is arranged on the transmission shaft 10, so that the problem that oil leakage easily occurs in an upper shaft mechanism of the sewing machine in the prior art is solved.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.