CN110904580A - Rotary wire regulator device - Google Patents
Rotary wire regulator device Download PDFInfo
- Publication number
- CN110904580A CN110904580A CN201910864305.XA CN201910864305A CN110904580A CN 110904580 A CN110904580 A CN 110904580A CN 201910864305 A CN201910864305 A CN 201910864305A CN 110904580 A CN110904580 A CN 110904580A
- Authority
- CN
- China
- Prior art keywords
- wire
- adjuster
- wire adjuster
- disc
- thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
- D05B47/04—Automatically-controlled tensioning devices
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a rotary wire regulator device which stably realizes low wire tension. The rotary wire adjuster device includes: a thread adjuster disc (30) that rotates by movement of the wound suture; a wire adjuster shaft (21) rotatably supporting the wire adjuster disc; a contact member (28) which is supported by the wire adjuster shaft, is movable in the axial direction of the wire adjuster shaft, and is in contact with the wire adjuster disc to apply a frictional load to the rotation of the wire adjuster disc; and an actuator (40) which can change and adjust the pressing force for bringing the contact member (28) into contact with the wire adjuster disc (30). The contact member (28) is formed of a resin member. The contact member (28) is in contact with the wire adjuster disc (30) by a high pressing force, but achieves a low wire tension, and can stably maintain the low wire tension by suppressing the influence of vibration and the like.
Description
Technical Field
The present invention relates to a rotary thread regulator device for applying tension to a thread of a sewing machine.
Background
Conventionally, a sewing machine is equipped with a thread adjusting device for applying tension to various threads used for sewing in order to form a proper stitch.
The thread adjusting device is generally configured such that a thread is sandwiched between a pair of thread adjusting disks, and the thread tension is adjusted by adjusting the sandwiching pressure of the pair of thread adjusting disks.
On the other hand, depending on the type of sewing machine, there is a demand for forming stitches gently, and in the case of a method of adjusting the thread tension by sandwiching the thread by a thread adjuster disc, the thread tension acts in a relatively wide range, and therefore, the method is not suitable for the above demand.
The rotary type thread adjusting device is suitable for imparting a low thread tension as described above, and has: a rotary wire adjuster disc that winds a wire around an outer periphery; a contact member that contacts both surfaces of the rotary wire adjuster disc; a spring for applying a pressing force for bringing each contact member into contact with the rotary wire adjuster disc; and an adjustment screw that adjusts a spring pressure of the spring (see, for example, patent document 1).
Patent document 1: japanese laid-open patent publication No. H09-220391
However, the above-described rotary wire adjuster device requires adjustment by manually rotating the adjustment screw, and the adjustment operation is very complicated. Further, since the linear tension is adjusted by feel while the rotation operation is applied, the reproducibility is low. Also, it is very difficult to adjust the thread tension in sewing.
In the rotary type thread adjusting device, although a felt material is used as the contact member, a low tension can be achieved, but if the pressing force for bringing each contact member into contact with the rotary thread adjusting disc is not reduced, the low tension cannot be maintained. However, if the pressing force for bringing the contact members into contact with each other is reduced, the rotary thread adjusting disk is susceptible to vibration during high-speed rotation of the sewing machine, and is susceptible to the weight and friction of the members for transmitting the contact pressure to the contact members, which causes a problem that it is difficult to maintain the target value by stabilizing the tension.
Disclosure of Invention
The invention aims to realize the facilitation of the adjustment of the thread tension of a rotary thread adjuster device.
The invention described in (1) is a rotary wire adjuster device, comprising:
a thread adjuster disc rotated by movement of the wound suture thread;
a wire adjuster shaft rotatably supporting the wire adjuster disc;
a contact member that is supported by the wire adjuster shaft, is movable in an axial direction of the wire adjuster shaft, and is in contact with the wire adjuster disc to apply a frictional load to rotation of the wire adjuster disc; and
an actuator capable of changing and adjusting a pressing force with which the contact member is brought into contact with the wire adjuster disc,
the contact member is made of a resin member.
The invention described in (2) is characterized in that, in the rotary wire adjuster device described in (1), the contact member is made of a fluororesin.
The invention described in (3) is characterized in that, in the rotary wire adjuster device described in (1),
the contact member is made of polyamide resin.
The invention described in (4) is characterized in that, in the rotary wire adjuster device described in (1),
the contact member is made of polyacetal resin.
ADVANTAGEOUS EFFECTS OF INVENTION
The invention makes the abutting component contact with the wire regulator disc side through the actuator, and the pressing force of the contact can be controlled through an external signal, so the adjustment work of the wire tension is easy.
Further, since the pressing force of the actuator can be controlled by an external signal, the line tension can be set arbitrarily, and an appropriate line tension can be reproduced.
Further, since the thread tension is controlled by an external signal, the thread tension can be arbitrarily adjusted even during sewing.
Further, in the case where the abutment member is formed of a resin member, even if the pressing force for bringing the abutment member into contact with the wire adjuster disc is increased, the tension can be reduced, and the low tension can be stably maintained.
In particular, when the abutment member is formed of a resin such as a fluororesin, a polyamide resin, or a polyacetal resin, even if the pressing force for bringing the abutment member into contact with the wire adjuster disc is increased, the low tension is more easily maintained, and the low tension can be more stably maintained.
Drawings
Fig. 1 is an oblique view of a rotary wire adjuster device according to an embodiment of the present invention.
Fig. 2 is a sectional view of the rotary thread regulator device in a state of being equipped in the sewing machine.
Fig. 3 is an oblique view of the wire adjuster.
Fig. 4 is an exploded oblique view of the wire adjuster.
Fig. 5 is an exploded oblique view of the rotary wire adjuster device.
Fig. 6 is a diagram showing characteristics of the rotary wire adjuster device in the case where the contact member is formed of a fluororesin, a polyamide resin, a polyacetal resin, or a felt material.
Description of the reference numerals
10 Rotary wire conditioner device
20 line regulator
27 disc pressing piece
28 abutting part
30-wire regulator disk
40-wire regulator solenoid (actuator)
50 transfer part
51 transfer shaft
52 helical spring
100 Sewing machine frame
N suture
Detailed Description
[ schematic Structure of wire regulator device ]
A rotary thread adjuster device 10 of a sewing machine according to an embodiment of the present invention will be described with reference to the drawings.
Fig. 1 is an oblique view of a rotary wire adjuster device 10.
As shown in fig. 1, the rotary wire adjuster device 10 has: a wire adjuster 20; a wire regulator solenoid 40 as an actuator that arbitrarily regulates a wire tension of the wire regulator 20; and a transmission portion 50 that transmits an output of the line regulator solenoid 40 to the line regulator 20.
Fig. 2 is a sectional view of the rotary thread regulator device 10 in a state of being equipped with a sewing machine. The rotary thread adjuster device 10 is supported to the sewing machine frame 100.
The right side in fig. 2 is a front side of the sewing machine frame 100, and the left side in fig. 2 is a back side of the sewing machine frame 100.
In the rotary thread adjuster device 10, the thread adjuster 20 is provided in a state in which the outer wall 101 on the front surface side of the sewing machine frame 100 is exposed, and the thread adjuster solenoid 40 is provided in a state in which the outer wall 102 on the rear surface side of the sewing machine frame 100 is exposed. The transmission unit 50 disposed inside the sewing machine frame 100 transmits the output of the thread regulator solenoid 40 to the thread regulator 20.
The wire regulator solenoid 40 is exposed from the outer wall, but a cover may be provided at the exposed portion.
[ thread regulator ]
Fig. 3 is an oblique view of the wire adjuster 20, and fig. 4 is an exploded oblique view.
As shown in the drawing, the wire adjuster 20 includes: a wire adjuster disc 30 having a shaft hole 31 in a central portion; a wire adjuster shaft 21 that rotatably supports the wire adjuster disc 30 by penetrating the wire adjuster disc; a pair of disc pressing members 27 disposed on both right and left sides of the wire adjuster disc 30; a pair of contact members 28 interposed between the respective disc presser members 27 on both left and right sides of the wire adjuster disc 30; a pressing shaft 22 that penetrates the wire adjuster shaft 21 and presses the left disc pressing member 27; a wire take-up spring 23 of a torsion coil spring structure disposed outside the wire adjuster shaft 21; a wire regulator stand 24 covering the wire take-up spring 23; and an insertion member 26 inserted into the protective cover 25.
The thread adjuster table 24 is cylindrical, and the left end portion thereof is fixed to the right outer wall 101 of the sewing machine frame 100 in a buried state with the center line thereof extending in the left-right direction.
The wire adjuster base 24 has a closed left end and an open right end. A through hole 241 is formed in the wall surface of the closed left end of the wire adjuster base 24 so as to penetrate the center portion in the left-right direction.
The wire adjuster shaft 21 is formed with an insertion hole 211 penetrating the center portion thereof, and is supported by the wire adjuster base 24 with the center line thereof oriented in the left-right direction. The wire adjuster shaft 21 has a middle portion 212 in the longitudinal direction with the largest outer diameter, and a left end portion 213 with two steps from the middle portion 212 and having a smaller diameter. The left end 213 of the wire adjuster shaft 21 is inserted into a through hole 241 in the left end wall of the wire adjuster base 24 from the right side, and is fastened and fixed by a grub screw, not shown.
The right end 214 of the wire adjuster shaft 21 is divided into two parts from the middle part 212 by a slit 215 passing through the center line. That is, the right end portion of the wire adjuster shaft 21 has a shape formed by two substantially semicircular shapes that divide a circle into two parts in the diametrical direction when viewed from the right. Also, the slit 215 and the insertion hole 211 communicate.
On the other hand, the pair of disc retainers 27 are disc-shaped and have a circular through hole 271 having a central rib 272 formed in the central portion thereof. That is, the through-hole 271 of the disc holder 27 has two substantially semicircular shapes each formed by dividing a circular shape into two parts in the diametrical direction by the central rib 272. Then, the right end portion 214 of the line adjuster shaft 21 is inserted into the through hole 271 of each disc holder 27 so that the center rib 272 is inserted into the slit 215.
On the other hand, the pair of contact members 28 and the wire adjuster disc 30 are each formed with a circular through hole 281 and a circular shaft hole 31 having no central rib at the central portion thereof, and the right end portion 214 of the wire adjuster shaft 21 is inserted into the through hole 281 and the shaft hole 31 and held between the pair of disc retainers 27.
Therefore, the respective disc presser 27 is held so as not to rotate with respect to the thread adjuster shaft 21 and the thread adjuster table 24, and the respective abutment members 28 and the thread adjuster disc 30 are held so as to be rotatable with respect to the thread adjuster shaft 21 and the thread adjuster table 24. The respective disk holders 27, the respective contact members 28, and the wire adjuster disk 30 are movable along the right end portion 214 of the wire adjuster shaft 21.
The pressing shaft 22 has a pin shape with a small diameter and is slidably inserted into the insertion hole 211 of the left end 213 of the wire adjuster shaft 21. The right end of the pressing shaft 22 abuts against the center rib 272 of the left disc presser 27, and the left end of the pressing shaft 22 projects leftward from the left end 213 of the line adjuster shaft 21.
The pressing shaft 22 receives a pressing force from its left end portion to the right, and the respective contact members 28 are brought into contact with the wire adjuster disc 30 via the disc presser 27. By adjusting the pressing force, the sliding friction force of each contact member 28 with respect to the wire adjuster disc 30 can be adjusted, and the sliding friction force with respect to the rotation of the wire adjuster disc 30 can be adjusted.
The coil-shaped main body portion of the wire take-up spring 23 is inserted between the inner peripheral surface of the wire adjuster base 24 and the outer peripheral surface of the intermediate portion 212 of the wire adjuster shaft 21. At this time, one end portion of the wire rod constituting the wire take-up spring 23 is inserted into the rotation stop groove 216 formed in the outer peripheral surface of the intermediate portion 212 of the wire adjuster shaft 21, and is fixed so as not to rotate with respect to the wire adjuster shaft 21 and the wire adjuster table 24. The other end of the wire rod constituting the wire take-up spring 23 has a hook-shaped wire hanging portion 231. The wire hooking portion 231 extends outward of the wire adjuster base 24 through a slit 242 formed to extend from the inner peripheral surface to the outer peripheral surface of the wire adjuster base 24.
The protective cover 25 is a cylindrical body having a through hole 251 at the center, and the left end surface thereof abuts against the right side surface of the right disc holder 27.
The protective cover 25 is formed with a slit 252 extending from a central through hole 251 to the outer peripheral surface over the entire length thereof, and can be fixed by clasping the right end portion 214 of the wire adjuster shaft 21 inserted into the through hole 251. The insertion member 26 is inserted into the slit 215 of the right end portion 214 of the wire adjuster shaft 21, and the width of the slit 215 is restricted so as not to be narrowed when clasping the wire adjuster shaft 21, so that the respective disc retainers 27, the respective abutment members 28, and the wire adjuster disc 30 can smoothly move along the wire adjuster shaft 21.
The thread adjusting disk 30 is formed with a V-shaped groove 32 for winding the thread N on the outer periphery, and the bottom of the V-shaped groove 32 is formed so that the concave portions and the convex portions are alternately repeated in the circumferential direction.
When the suture N is fed to the feeding target of the suture N after being wound for one or two weeks with respect to the V-shaped groove 32 of the thread adjusting disk 30, the thread adjusting disk 30 rotates when the feeding target is consumed and the suture N is drawn out. As described above, since the adjustable sliding friction force is applied to the thread adjuster disc 30, an appropriate thread tension can be applied to the drawn thread N.
The contact member 28 is a circular plate having a through hole 281 formed at the center thereof. The wire adjuster 20 is made of metal such as stainless steel except for the contact member 28, but the contact member 28 is made of a resin material having excellent slidability such as a fluororesin, a polyamide resin, or a polyacetal resin.
By forming the contact members 28 from these materials, the thread adjuster disc 30 can be maintained at a low tension even if the pressing force for bringing the respective contact members 28 into contact with the thread adjuster disc 30 is increased as compared with the case where the contact members are formed from a felt material.
[ solenoid and transmission part of wire adjuster ]
Fig. 5 is an exploded oblique view of the rotary wire adjuster device 10.
As shown in fig. 1, 2 and 5, the thread adjuster solenoid 40 is held in a state where the plunger 41 is directed to the right side in the inside of the sewing machine frame 100 by the outer wall 102 on the back side of the sewing machine frame 100. Then, the plunger 41 of the wire adjuster solenoid 40 moves forward and backward in the left-right direction.
In addition, the wire adjuster solenoid 40 can arbitrarily adjust the pressing force when the plunger 41 is projected rightward according to the magnitude of the driving current.
As shown in fig. 1, 2, and 5, the transmission unit 50 includes: a transmission shaft 51 that transmits the pressing force of the plunger 41 of the wire adjuster solenoid 40 to the pressing shaft 22 of the wire adjuster 20; and a coil spring 52 that presses the transmission shaft 51 toward the left wire adjuster solenoid 40.
The plunger 41 of the thread adjuster solenoid 40, the pressing shaft 22 of the thread adjuster 20, and the transmission shaft 51 are supported to the sewing machine frame 100 so as to be concentric.
The left end of the transmission shaft 51 abuts against the right end of the plunger 41 of the wire adjuster solenoid 40, and the right end of the transmission shaft 51 abuts against the left end of the pressing shaft 22 of the wire adjuster 20.
The transmission shaft 51 is supported by the sewing machine frame 100 so as to be slidable in the left-right direction. The transmission shaft 51 is pressed leftward by a coil spring 52 at its left end.
As described above, the wire adjuster solenoid 40 can arbitrarily adjust the pressing force when the plunger 41 is projected rightward according to the magnitude of the drive current. Then, the plunger 41 is applied with a pressing force by the coil spring 52 via the transmission shaft 51.
Therefore, a pressing force for projecting the plunger 41 of the linear actuator solenoid 40 to the right is generated against the pressing force of the coil spring 52, and the pressing force is controlled, whereby an arbitrary pressing force is input to the pressing shaft 22 of the linear actuator 20. Further, by controlling the pressing force for bringing each contact member 28 into contact with the wire adjuster disc 30, an arbitrary wire tension can be generated.
Specifically, a drive circuit for controlling the magnitude of the drive current in response to an external signal is connected to the wire adjuster solenoid 40, and the wire tension can be adjusted by generating an arbitrary pressing force in response to the external signal.
[ characteristics of the Rotary wire conditioner device ]
The rotary wire adjuster device 10 can press the contact member 28 toward the wire adjuster disc 30 by the wire adjuster solenoid 40, and can control the pressing force as desired, so that the wire tension adjustment work is easy.
Further, the pressing force of the wire regulator solenoid 40 can be controlled by an external signal, the wire tension can be set arbitrarily, and an appropriate wire tension can be reproduced.
And, the thread tension is controlled by an external signal, so that the thread tension can be arbitrarily adjusted even in the sewing process.
The relationship between the output of the wire adjuster solenoid 40 and the wire tension generated by the wire adjuster 20 achieved by the rotary wire adjuster device 10 is shown in fig. 6.
Fig. 6 is a graph showing characteristics in the rotary wire adjuster device 10 in the case where the abutment member 28 is formed of a fluororesin, a polyamide resin, or a polyacetal resin, and in the case where the abutment member 28 is formed of a felt material as a comparative example.
L1 shows a case where the abutment member 28 is made of a fluororesin, L2 shows a case where the abutment member 28 is made of a polyacetal resin, L3 shows a case where the abutment member 28 is made of a polyamide resin, and Lp shows a case where the abutment member 28 is made of a felt material.
In each diagram, the horizontal axis represents the output (in units of gf) of the thread regulator solenoid 40, and the vertical axis represents the magnitude (in units of gf) of the thread tension generated in the thread N wound around the thread regulator disk 30.
The sewing machine is performed while maintaining the rotation speed of the sewing machine at 4000 rpm in a state where a thread N is wound for one turn on the thread adjuster disk 30 with respect to the thread adjuster 20 having the abutment member 28 made of various materials, the output of the thread adjuster solenoid 40 is increased by 15 units from 0, and the thread tension of the thread N is measured at each output.
As a result, the rate of increase in the line tension with respect to the increase in the output of the line conditioner solenoid 40 is extremely low in the rotary wire conditioner 10 using the abutment member 28 formed of the felt material, compared to the rotary wire conditioner 10 using the abutment member 28 formed of the fluororesin, the polyamide resin, or the polyacetal resin.
For example, the output of the linear regulator solenoid 40 becomes approximately 15 gf for the felt material, approximately 90 gf for the fluororesin, approximately 80 gf for the polyamide resin, and approximately 100 gf for the polyacetal resin, for a linear tension 30 gf (position of the straight line d 1) which is called a low linear tension.
As described above, in the case of using the abutment members 28 of the fluorine resin, the polyamide resin, or the polyacetal resin, even when the wire adjuster 20 generates a low wire tension, the output of the wire adjuster solenoid 40 can be increased, and the abutment members 28 can be brought into contact with the wire adjuster disc 30 with a high pressing force.
Further, the lower limit value of the output of the thread regulator solenoid 40 (the position of the straight line d 2), which is 45 gf (the lower limit value) capable of suppressing the influence of vibration of the sewing machine, the weight of each member, and the frictional force at the time of sewing, is about 55 gf for the felt material, about 15 gf for the fluororesin, about 15 gf for the polyamide resin, and about 13 gf for the polyacetal resin.
As described above, it is clear that: in the case of using the contact member 28 made of a fluororesin, a polyamide resin, or a polyacetal resin, the influence of vibration of the sewing machine, the weight of each member, and the frictional force is suppressed, and extremely low thread tension is realized.
Claims (4)
1. A rotary wire conditioner device, comprising:
a thread adjuster disc rotated by movement of the wound suture thread;
a wire adjuster shaft rotatably supporting the wire adjuster disc;
a contact member that is supported by the wire adjuster shaft, is movable in an axial direction of the wire adjuster shaft, and is in contact with the wire adjuster disc to apply a frictional load to rotation of the wire adjuster disc; and
an actuator capable of changing and adjusting a pressing force with which the contact member is brought into contact with the wire adjuster disc,
the contact member is made of a resin member.
2. The rotary wire adjuster device of claim 1,
the contact member is made of fluororesin.
3. The rotary wire adjuster device of claim 1,
the contact member is made of polyamide resin.
4. The rotary wire adjuster device of claim 1,
the contact member is made of polyacetal resin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-172253 | 2018-09-14 | ||
| JP2018172253A JP7224129B2 (en) | 2018-09-14 | 2018-09-14 | rotary thread tension device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110904580A true CN110904580A (en) | 2020-03-24 |
| CN110904580B CN110904580B (en) | 2023-03-10 |
Family
ID=69646519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910864305.XA Active CN110904580B (en) | 2018-09-14 | 2019-09-12 | Rotary wire conditioner device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7224129B2 (en) |
| CN (1) | CN110904580B (en) |
| DE (1) | DE102019124780A1 (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5583074U (en) * | 1978-12-05 | 1980-06-07 | ||
| JPH09220391A (en) * | 1995-12-13 | 1997-08-26 | Juki Corp | Yarn tension control device of sewing machine |
| JP2002210279A (en) * | 2001-01-19 | 2002-07-30 | Brother Ind Ltd | Thread tension device for sewing machine |
| CN1407163A (en) * | 2001-08-28 | 2003-04-02 | 飞马缝纫机制造株式会社 | Thread tension controller of sewing machine |
| CN101457449A (en) * | 2007-12-12 | 2009-06-17 | Juki株式会社 | Suture line controlling device of sewing machine |
| CN101805962A (en) * | 2009-02-16 | 2010-08-18 | Juki株式会社 | Thread adjusting device of sewing machine |
| WO2013100543A1 (en) * | 2011-12-29 | 2013-07-04 | 주식회사 썬스타 | Automatic thread tension adjustment device |
| CN203878329U (en) * | 2014-03-04 | 2014-10-15 | Juki株式会社 | Sewing machine for decorative sewing |
| CN107304500A (en) * | 2016-04-21 | 2017-10-31 | Juki株式会社 | The line adjuster device of sewing machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6012405A (en) | 1998-05-08 | 2000-01-11 | Mcet, Llc | Method and apparatus for automatic adjustment of thread tension |
| JP2011177250A (en) | 2010-02-26 | 2011-09-15 | Brother Industries Ltd | Thread tension device of sewing machine |
| JP5583074B2 (en) | 2010-10-22 | 2014-09-03 | 三菱電機株式会社 | Gas insulated switchgear and method for manufacturing the same |
| US20160305054A1 (en) | 2015-04-20 | 2016-10-20 | Gammill, Inc. | Method to automatically control thread tension |
-
2018
- 2018-09-14 JP JP2018172253A patent/JP7224129B2/en active Active
-
2019
- 2019-09-12 CN CN201910864305.XA patent/CN110904580B/en active Active
- 2019-09-16 DE DE102019124780.2A patent/DE102019124780A1/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5583074U (en) * | 1978-12-05 | 1980-06-07 | ||
| JPH09220391A (en) * | 1995-12-13 | 1997-08-26 | Juki Corp | Yarn tension control device of sewing machine |
| JP2002210279A (en) * | 2001-01-19 | 2002-07-30 | Brother Ind Ltd | Thread tension device for sewing machine |
| CN1407163A (en) * | 2001-08-28 | 2003-04-02 | 飞马缝纫机制造株式会社 | Thread tension controller of sewing machine |
| CN101457449A (en) * | 2007-12-12 | 2009-06-17 | Juki株式会社 | Suture line controlling device of sewing machine |
| CN101805962A (en) * | 2009-02-16 | 2010-08-18 | Juki株式会社 | Thread adjusting device of sewing machine |
| WO2013100543A1 (en) * | 2011-12-29 | 2013-07-04 | 주식회사 썬스타 | Automatic thread tension adjustment device |
| CN203878329U (en) * | 2014-03-04 | 2014-10-15 | Juki株式会社 | Sewing machine for decorative sewing |
| CN107304500A (en) * | 2016-04-21 | 2017-10-31 | Juki株式会社 | The line adjuster device of sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2020043890A (en) | 2020-03-26 |
| DE102019124780A1 (en) | 2020-03-19 |
| JP7224129B2 (en) | 2023-02-17 |
| CN110904580B (en) | 2023-03-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5297756A (en) | Fishing reel with adjustable drag force characteristics | |
| US4526329A (en) | Magnetic tensioning device | |
| US3300161A (en) | Control device | |
| CN110904580B (en) | Rotary wire conditioner device | |
| JP2008239264A (en) | Tension adjusting device | |
| JPH05193831A (en) | Brake mechanism driven to rotate for thread tensioner | |
| CN101457449A (en) | Suture line controlling device of sewing machine | |
| JP2020204106A (en) | Thread tension adjusting device | |
| US2640663A (en) | Device for controlling the tension of a longitudinally moving wire | |
| JP2008023047A (en) | Bobbin thread tension control device | |
| US4516739A (en) | Magnetically controlled wire tensioning device | |
| JP5253980B2 (en) | Lower thread tension control device | |
| JP2018153405A (en) | Thread tension control device of sewing machine | |
| JP2662282B2 (en) | Wire tension control device | |
| US4530296A (en) | Lower thread tension adjusting device of sewing machines | |
| JPS6330392Y2 (en) | ||
| JPH06343783A (en) | Thread feed device for sewing machine | |
| US5363786A (en) | Thread tensioning device having an electromagnet for applying a variable force opposing rotation of a tensioning element | |
| JP2007020791A (en) | Stitch balancing thread tension device for sewing machine | |
| CN102031647B (en) | Thread clamping device of sewing machine | |
| JP2007325614A (en) | Thread tension mechanism | |
| JP3870797B2 (en) | Thread tension device | |
| US4301978A (en) | Electro-magnetic thread tension control for sewing machines | |
| JP2003326053A (en) | Device for stitch balancing thread tension of sewing machine | |
| JP5197129B2 (en) | Lower thread tension control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |