CN106471173B - Bearing device of upper shaft of sewing machine - Google Patents
Bearing device of upper shaft of sewing machine Download PDFInfo
- Publication number
- CN106471173B CN106471173B CN201580028041.4A CN201580028041A CN106471173B CN 106471173 B CN106471173 B CN 106471173B CN 201580028041 A CN201580028041 A CN 201580028041A CN 106471173 B CN106471173 B CN 106471173B
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- upper shaft
- bushing
- sewing machine
- shaft
- bearing device
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/30—Details
- D05B69/32—Vibration-minimising devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/30—Details
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B71/00—Lubricating or cooling devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention relates to a bearing device of an upper shaft of a sewing machine. The present invention includes an upper shaft (100) having one end coupled to a crank (230) and the other end coupled to a power transmission medium, horizontally installed as a shaft on a horn of a sewing machine, and formed of a hollow shaft having a hollow hole (110) formed along a length direction; a spiral guide groove (130, 130a) which is formed by processing at least one on the outer diameter of the upper shaft (100); a first bushing (200) installed at a position adjacent to a periphery of a crank (230) installed on the upper shaft (100) and installed along the spiral guide groove (130); and a second bushing 210 installed at one end of the upper shaft spaced apart from the first bushing 200, fixing the upper shaft 100 to the horn together with the first bushing 200, supporting the self weight of the upper shaft 100 and the load on the upper shaft, and installed along the spiral guide groove 130a to guide the rotation of the upper shaft. In the process of installing the upper shaft of the sewing machine along the angle arm, the driving noise of the sewing machine is reduced by preventing the movement and shaking of the upper shaft and preventing noise and abrasion, and the service durability of the sewing machine is continuously maintained by prolonging the exchange and maintenance period of the bush.
Description
Technical Field
The present invention relates to a bearing device of an upper shaft of a sewing machine, and more particularly, to a bearing device of an upper shaft of a sewing machine capable of preventing movement and shaking of the upper shaft when the upper shaft of the sewing machine is mounted along an angle arm.
Background
As shown in fig. 1, the driving shaft of the sewing machine is divided into an upper shaft 12 installed along an angle arm 11 and a lower shaft 14 installed along a machine tool 13, and interlocked with each other. The upper shaft 12 reciprocates a needle for a double lock stitch on a feeder, the lower shaft 14 is located at a lower portion of the feeder, and a bobbin case 15 and a bobbin 16 for supplying a lower thread (lower thread) and a rotary hook 17 are sequentially mounted on the lower shaft 14.
The sewing machine 10 is configured such that the rotation direction of an upper shaft 12 constituting a driving shaft and the rotation direction of a lower shaft 14 rotating a bobbin are different from each other. Generally, during 1 round trip of a needle for a double lock stitch on a feeder basis, the lower shaft 14 supplying the lower thread makes 2 rotations in the opposite direction to the upper shaft 12. Fig. 2 shows the upper shaft 12 and the lower shaft 14 of the sewing machine 10 interacting with each other by providing a vertical shaft 18 and a power transmission gear 19.
As described above, in mounting the driving shaft divided into the upper shaft and the lower shaft of the sewing machine, it has been designed that the number of required components can be reduced, the driving noise and vibration can be reduced while sufficiently securing the component arrangement space, and korean patent application No. 10-2000-0022665 has described a technical solution of reducing the number of components, the driving noise and vibration while reducing the component arrangement space. Korean patent laid-open No. 10-2007-0048609 describes a bearing structure for preventing the wobbling of a gear and reducing wear, breakage, etc. by reducing the load on a lower shaft.
The wear of the upper shaft of the sewing machine based on the sliding and rotating movement, or the resistance occurring based on the correlation of the sliding and rotating movement, and the load applied at the time of the sliding/rotating movement, i.e., the load determined based on the surface pressure, are greatly affected. This is because as the speed increases and as the area increases, the friction rate increases, the frictional resistance increases, and the wear increases.
However, in the conventional sewing machine, in order to assemble a crank head at one end of an upper shaft, several metal bushings are assembled along the length of the upper shaft to help the upper shaft rotate. However, it is difficult to continuously remove inter-axial noise and vibration due to wear and deformation of the bush and to continuously maintain a high-precision rotation state of the shaft for a long time due to melting of the bush in the upper shaft of the sewing machine supported by the simple-row bearing metal bush as described above.
Disclosure of Invention
The present invention has been made to solve the problems of the prior art, and an object of the present invention is to provide a bearing device for an upper shaft of a sewing machine, which can prevent the movement and shaking of the upper shaft and prevent melting and abrasion when the upper shaft of the sewing machine is mounted along an angle arm.
Another object of the present invention is to provide a bearing device for an upper shaft of a sewing machine, which can reduce driving noise and vibration of the upper shaft and melting and abrasion when the upper shaft of the sewing machine is installed along an angle arm as a shaft.
It is still another object of the present invention to provide a bearing device of an upper shaft of a sewing machine, which can improve durability of the sewing machine by reducing melting and abrasion of a bush when the upper shaft of the sewing machine is installed along an angle arm as a shaft.
The bearing device of the upper shaft of the sewing machine related to the embodiment of the invention comprises an upper shaft, one end of which is combined with a crank, the other end of which is combined with a power transmission medium, and the bearing device is horizontally arranged on an angle arm of the sewing machine as a shaft and consists of a hollow shaft with a hollow hole formed along the length direction; a spiral guide groove machined in at least one position of the outer diameter of the upper shaft; a first bushing installed at a position adjacent to a periphery of a crank installed on the upper shaft along the spiral guide groove; and a second bushing for supporting the self weight of the upper shaft and the load on the upper shaft and guiding the rotation of the upper shaft, installed on one end of the upper shaft spaced from the first bushing along the spiral guide channel and fixing the upper shaft on the angle arm together with the first bushing.
Another feature of the present invention is to provide a bearing device for an upper shaft of a sewing machine, including: an upper shaft, one end of which is combined with the crank and the other end of which is combined with the power transmission medium, and which is horizontally arranged on the angle arm of the sewing machine and is composed of a hollow shaft with a hollow hole formed along the length direction; the spiral guide groove is processed at least one part of the outer diameter of the upper shaft; a first bushing installed at a position adjacent to a periphery of a crank installed on the upper shaft along the spiral guide groove; the second bushing is used for supporting the self weight of the upper shaft and guiding the rotation of the upper shaft while bearing the load on the upper shaft, is arranged at one end of the upper shaft which is separated from the first bushing by a certain distance along the spiral guide groove and fixes the upper shaft on the angle arm together with the first bushing; and a third bushing installed at an upper shaft intermediate point between the first bushing and the second bushing or at a position offset from the first bushing or the second bushing with reference to the intermediate point.
The bearing device of the upper shaft of the sewing machine related to the embodiment of the invention is characterized in that the upper shaft is formed by a hollow shaft with a hollow hole along the length direction.
The bearing device of the upper shaft of the sewing machine according to the embodiment of the invention is characterized in that the spiral guide groove of the upper shaft is processed at the position contacting with the first bushing and the second bushing.
The bearing device of the upper shaft of the sewing machine according to the embodiment of the invention is characterized in that the thread pitch of the spiral guide groove for installing the first bush is processed into a left-turn spiral direction.
The bearing device of the upper shaft of the sewing machine according to the embodiment of the invention is characterized in that the thread pitch of the spiral guide groove for installing the second bush is processed to be in a right-turn spiral direction.
The bearing device of the upper shaft of the sewing machine according to the embodiment of the invention is characterized in that a plug seam for preventing the axial sliding and the rotary sliding of the third bush is formed on the upper shaft.
The bearing device of the upper shaft of the sewing machine is characterized in that the first bushing comprises a conical head which narrows the section contacted with the crank.
The bearing device of the upper shaft of the sewing machine according to the embodiment of the invention is characterized in that the second bush comprises a conical head which narrows the contact section with the power transmission medium.
The bearing device of the upper shaft of the sewing machine according to the embodiment of the present invention is characterized in that the first bush, the second bush and the third bush 220 are formed with screw holes, and the upper shaft is formed with grooves corresponding to the screw holes.
The bearing device of the upper shaft of the sewing machine according to the embodiment of the invention is characterized in that the power transmission medium is selected from any one of a gear and a belt pulley.
According to the bearing device of the upper shaft of the sewing machine provided by the embodiment of the invention, when the upper shaft of the sewing machine is installed along the angle arm, the effects of reducing the driving noise and vibration of the sewing machine, prolonging the replacement and maintenance period of the bush and the service life of the upper shaft can be achieved by preventing the movement and the shaking of the upper shaft and preventing the melting and the abrasion, the faults of the whole thread bobbin of the sewing machine can be reduced by reducing the abrasion or the eccentric rotation of one side of the upper shaft, and the effect of keeping the use permanence of the sewing machine can be achieved.
Drawings
Fig. 1 is a schematic view of a general sewing machine body.
FIG. 2 is an alternate view of the upper and lower shaft portions of the drive assembly of the sewing machine.
Fig. 3 is an exploded upper shaft view of the sewing machine according to the embodiment of the present invention.
Fig. 4 is an upper shaft of the sewing machine according to the embodiment of the present invention.
Fig. 5 is a first bushing according to an embodiment of the present invention, and (a) is a front view and (b) is a sectional view taken along a-a.
FIG. 6 is a sectional view taken along line B-B in FIG. 5 (a).
Fig. 7 is a front view of a second bushing according to an embodiment of the present invention.
Fig. 8 is a cross-sectional view of fig. 7 taken along line C-C.
Fig. 9 is a cross-sectional view of fig. 7 taken along line D-D.
Fig. 10 is a front view of a third bushing according to an embodiment of the present invention.
Fig. 11 is a cross-sectional view taken along line E-E of fig. 10.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The bearing device of the upper shaft of the sewing machine according to the embodiment of the present invention has a structure for fixing the upper shaft of the rotating sewing machine at a certain position and rotating the upper shaft while supporting the self weight of the upper shaft and the load on the shaft.
Fig. 3 illustrates an example of arrangement of a bearing device of an upper shaft of a sewing machine according to an embodiment of the present invention. Referring to fig. 3, a crank 230 is assembled to one end of the upper shaft 100, and a first bushing 200, a third bushing 220, and a second bushing 210 are sequentially assembled to the upper shaft 100, and the upper shaft 100 is installed as a shaft along the longitudinal direction of the horn arm in order to facilitate smooth rotation of the upper shaft 100. The upper shaft bearing device in which the first bushing 200, the second bushing 210, and the third bushing 220 are sequentially installed along the axial direction of the upper shaft 100 as described above has a structure capable of eliminating inter-axial noise and vibration due to wear and deformation of the bushings for a long time, preventing the bushings from being melted, and supporting the upper shaft 100 in a high-precision rotating state for a long time.
The bearing device of the upper shaft of the sewing machine according to the first embodiment of the present invention includes an upper shaft 100, one end of which is coupled to a crank 230 and the other end of which is coupled to a power transmission medium (shown as a bevel gear in the drawing), and which is installed on an arm of the sewing machine as a shaft in a horizontal direction.
In addition, spiral guide grooves 130 and 130a are formed at least one portion of the outer diameter of the upper shaft 100.
Further, a first bushing 200 is mounted on the upper shaft 100 at a position adjacent to the periphery of the crank 230 along the spiral guide groove 130 of the upper shaft 100.
The first bushing 200 is installed along the spiral guide groove 130 for guiding the rotation of the upper shaft while supporting the self weight of the upper shaft 100 and the load on the upper shaft.
Furthermore, a second bushing 210 is mounted on one end of the upper shaft at a distance from the first bushing 200, said second bushing 210 together with the first bushing 200 fixing the upper shaft 100 on the horn arm.
The second bushing 210 is installed along the spiral guide groove 130a for supporting the self weight of the upper shaft 100 and the load of the upper shaft while guiding the rotation of the upper shaft.
The bearing device of the upper shaft of the sewing machine according to the second embodiment of the present invention includes the upper shaft 100, one end of which is coupled to the crank 230 and the other end of which is coupled to the power transmission medium, and which is installed on the horn of the sewing machine as a shaft in the horizontal direction.
In addition, at least one spiral guide groove 130, 130a is formed on the outer diameter of the upper shaft 100.
Further, a first bushing 200 is mounted on the upper shaft 100 at a position adjacent to the periphery of the crank 230 along the spiral guide groove 130 of the upper shaft 100.
The first bushing 200 is installed along the spiral guide groove 130 for guiding the rotation of the upper shaft while supporting the self weight of the upper shaft 100 and the load on the upper shaft.
Furthermore, a second bushing 210 is mounted on one end of the upper shaft at a distance from the first bushing 200, said second bushing 210 together with the first bushing 200 fixing the upper shaft 100 on the horn arm.
The second bushing 210 is installed along the spiral guide groove 130a for supporting the self weight of the upper shaft 100 and the load of the upper shaft while guiding the rotation of the upper shaft.
Further, the bearing device of the upper shaft of the sewing machine includes a middle point of the upper shaft 100 installed between the interval of the first bushing 200 and the second bushing 210 or a third bushing 220 biased toward the first bushing or the second bushing centering on the middle point.
Note that the unexplained reference numeral 203 is a shaft groove formed in the first bush, 213 is a shaft groove formed in the second bush, and 223 is a shaft groove formed in the third bush.
The present invention may be constructed in a hollow shaft form with the hollow hole 110 being generated in a length direction along the upper shaft 100. If the upper shaft 100 has the hollow hole 110, the weight and the rotational load can be reduced, thereby facilitating high-speed rotation.
The spiral guide grooves 130, 130a of the upper shaft 100 are formed at positions contacting the first and second bushes 200, 210. By the spiral guide groove, the coupling force between the first and second bushings 200 and 210 may be enhanced and the determination of the position of each bushing may be facilitated.
The pitch of the spiral guide groove 130 to which the first bushing 200 is mounted is preferably processed in a left-turn spiral direction. In contrast, the pitch of the spiral guide groove 130a to which the second bush 210 is attached is preferably processed in a right-handed spiral direction. When the pitch direction of the spiral guide groove is distinguished as described above, the first bush and the second bush are clearly distinguished, and the coupling can be performed along the upper shaft. The combination failure and the assembly failure caused by the erroneous insertion of the first bush and the second bush can be prevented.
Preferably, the upper shaft 100 has a slit 120 preventing the sliding rotation sliding in the axial direction of the third bush 220. The third bushing 220 is installed between the spaces of the first and second bushings and is firmly installed on the upper shaft 100 by the caulking 120.
As seen from the general structure of the sewing machine shown in fig. 1, the upper shaft 100, which is axially mounted on a straight line with an angular arm as a reference, has a first bush 200 located on the left side, a second bush 210 located on the right side, and a third bush 220 located at a middle position therebetween, and the first to third bushes support the rectangular upper shaft 100 so as to be balanced in the left and right directions, and exhibit a strong bearing support structure which is supported in a balanced manner by the middle bushes.
The first bushing 200 preferably has a conical head 201 that narrows the contact surface with the crank 230. The tapered head 201 formed on the first bushing 200 is formed with a step difference from the maximum diameter of the first bushing 200 to reduce the contact area by the step difference, thereby reducing friction between the first bushing 200 and the crank 230 and reducing wear.
The second sleeve 210 also has a tapered head 211 therein that narrows the cross-section that contacts the power transmission medium. The tapered head 211 reduces the contact area with a rotating body such as a power transmission drive gear or a pulley, thereby reducing friction between the second bush 210 and the power transmission medium and reducing wear.
As described above, the bearing device of the upper shaft of the sewing machine according to the embodiment of the present invention receives the rotation of the driving source (not shown) such as the external motor, and when the upper shaft 100 rotates in the corner arm of the sewing machine, the first bush 200, the second bush 210, and the third bush 220 support the self weight of the upper shaft 100 and the load of the upper shaft in a balanced and force-free inclined manner, and precisely induce the rotation of the upper shaft.
The first and second bushings 200 and 210 mounted on the upper shaft 100 are respectively mounted along the spiral guide grooves 130 and 130a formed on the outer diameter of the upper shaft 100 so as to prevent axial sliding and thus left and right shaking of the upper shaft 100, and the third bushing 220 is firmly positioned on the upper shaft 100 by the caulking 120 and supports the position near the center of the upper shaft 100 so as to increase resistance to shaft load and thus durability of the upper shaft.
The bearing device of the upper shaft of the sewing machine including the first and second bushings and the third bushing installed on the upper shaft can reduce the driving noise of the sewing machine by preventing the movement and shaking of the upper shaft and the melting and abrasion in the process of installing the upper shaft of the sewing machine along the corner arm, can prolong the exchange and maintenance period of the bushings and the durability of the upper shaft, and can reduce the fault of the whole sewing machine system by reducing the abrasion or eccentric rotation of one side of the upper shaft, and can maintain the permanent usability of the sewing machine.
Although the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various modifications and variations can be made without departing from the scope of the present invention.
Claims (9)
1. The bearing device of the upper shaft of the sewing machine is characterized in that: the method comprises the following steps:
an upper shaft (100) having one end coupled to the crank (230) and the other end coupled to the power transmission medium, horizontally installed as a shaft on the corner arm of the sewing machine, and formed of a hollow shaft having a hollow hole (110) formed along the longitudinal direction;
a spiral guide groove (130, 130a) machined in at least one location of the outer diameter of the upper shaft (100);
a first bushing (200) mounted along the spiral guide groove (130) at a position adjacent to and around a crank (230) mounted on the upper shaft (100); and
a second bushing (210) for supporting the self weight of the upper shaft (100) and the load on the upper shaft and guiding the rotation of the upper shaft, installed at one end of the upper shaft spaced apart from the first bushing (200) along the spiral guide groove (130a), and fixing the upper shaft (100) to the horn together with the first bushing (200);
the spiral guide grooves (130, 130a) of the upper shaft (100) are formed at positions contacting the first bush (200) and the second bush (210).
2. The bearing device of the upper shaft of the sewing machine is characterized in that: the method comprises the following steps:
an upper shaft (100) having one end coupled to the crank (230) and the other end coupled to the power transmission medium, horizontally installed as a shaft on an angle arm of the sewing machine, and formed of a hollow shaft having a hollow hole (110) formed along a longitudinal direction;
a spiral guide groove (130, 130a) machined in at least one location of the outer diameter of the upper shaft (100);
a first bushing (200) mounted along the spiral guide groove (130) at a position adjacent to and around a crank (230) mounted on the upper shaft (100); and
a second bushing (210) for supporting the self weight of the upper shaft (100) and the load on the upper shaft and guiding the rotation of the upper shaft, installed at one end of the upper shaft spaced apart from the first bushing (200) along the spiral guide groove (130a) and fixing the upper shaft (100) to the horn together with the first bushing (200); and
a third bushing (220) which is installed at the middle point of the upper shaft (100) between the first bushing (200) and the second bushing (210) or is biased to the first bushing or the second bushing based on the middle point;
the spiral guide grooves (130, 130a) of the upper shaft (100) are formed at positions contacting the first bush (200) and the second bush (210).
3. Bearing device for an upper shaft in a sewing machine according to claim 1 or claim 2,
the pitch of the spiral guide groove (130) for mounting the first bush (200) is processed to a left-turn spiral direction.
4. Bearing device for an upper shaft in a sewing machine according to claim 1 or claim 2,
the pitch of the spiral guide groove (130a) to which the second bush (210) is attached is processed in a right-turn spiral direction.
5. Bearing device for an upper shaft in a sewing machine according to claim 2,
the upper shaft (100) is provided with a plug slit (120) for preventing the third bush (220) from sliding in the axial direction and rotating.
6. Bearing device for an upper shaft in a sewing machine according to claim 1 or claim 2,
the first bushing 200 comprises a conical head 201 which can reduce the cross-sectional area in contact with the crank 230.
7. Bearing device for an upper shaft in a sewing machine according to claim 1 or claim 2,
the second sleeve (210) includes a tapered head (211) that reduces the cross-sectional area in contact with the power transmission medium.
8. Bearing device for an upper shaft in a sewing machine according to claim 2,
screw holes (202, 212, 222) are formed in the first bushing (200), the second bushing (210) and the third bushing 220, and grooves (102a, 112a, 122a) corresponding to the screw holes are formed in the upper shaft 100.
9. Bearing device for an upper shaft in a sewing machine according to claim 1 or claim 2,
the power transmission medium is selected from any one of a gear and a pulley.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140096555A KR101527811B1 (en) | 2014-07-29 | 2014-07-29 | The upper shaft bearing device of the sewing machine |
| KR10-2014-0096555 | 2014-07-29 | ||
| PCT/KR2015/006660 WO2016017938A1 (en) | 2014-07-29 | 2015-06-29 | Bearing device for upper shaft of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106471173A CN106471173A (en) | 2017-03-01 |
| CN106471173B true CN106471173B (en) | 2020-04-03 |
Family
ID=53505775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580028041.4A Active CN106471173B (en) | 2014-07-29 | 2015-06-29 | Bearing device of upper shaft of sewing machine |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101527811B1 (en) |
| CN (1) | CN106471173B (en) |
| WO (1) | WO2016017938A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105200681B (en) * | 2015-10-23 | 2018-09-25 | 拓卡奔马机电科技有限公司 | Pressure foot lifting axis oil storage lubrication system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09164286A (en) * | 1995-12-13 | 1997-06-24 | Brother Ind Ltd | Oil feeding device for sewing machine |
| CN1990936A (en) * | 2005-12-27 | 2007-07-04 | 兄弟工业株式会社 | Bearing arrangement of sewing machine |
| CN201250337Y (en) * | 2008-08-22 | 2009-06-03 | 阮孟定 | Drive spindle of electric direct-drive sewing machine |
| CN201839130U (en) * | 2010-10-08 | 2011-05-18 | 新杰克缝纫机股份有限公司 | Connection structure of motor shaft and upper shaft of sewing machine |
| CN102888722A (en) * | 2011-07-22 | 2013-01-23 | Juki株式会社 | Sewing machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200353816Y1 (en) * | 2004-04-02 | 2004-06-22 | 썬스타 특수정밀 주식회사 | Sewing or Embroidery Machine For Vibration Reduction |
| KR20090006063U (en) * | 2007-12-14 | 2009-06-18 | 썬스타 산업봉제기계 주식회사 | Vibrating diminution structure of sewing machine |
-
2014
- 2014-07-29 KR KR1020140096555A patent/KR101527811B1/en active IP Right Grant
-
2015
- 2015-06-29 CN CN201580028041.4A patent/CN106471173B/en active Active
- 2015-06-29 WO PCT/KR2015/006660 patent/WO2016017938A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09164286A (en) * | 1995-12-13 | 1997-06-24 | Brother Ind Ltd | Oil feeding device for sewing machine |
| CN1990936A (en) * | 2005-12-27 | 2007-07-04 | 兄弟工业株式会社 | Bearing arrangement of sewing machine |
| CN201250337Y (en) * | 2008-08-22 | 2009-06-03 | 阮孟定 | Drive spindle of electric direct-drive sewing machine |
| CN201839130U (en) * | 2010-10-08 | 2011-05-18 | 新杰克缝纫机股份有限公司 | Connection structure of motor shaft and upper shaft of sewing machine |
| CN102888722A (en) * | 2011-07-22 | 2013-01-23 | Juki株式会社 | Sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101527811B1 (en) | 2015-06-10 |
| CN106471173A (en) | 2017-03-01 |
| WO2016017938A1 (en) | 2016-02-04 |
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