CN106637735A - Trim thread, lifting foot pressure mechanism and sewing machine. - Google Patents
Trim thread, lifting foot pressure mechanism and sewing machine. Download PDFInfo
- Publication number
- CN106637735A CN106637735A CN201611115725.0A CN201611115725A CN106637735A CN 106637735 A CN106637735 A CN 106637735A CN 201611115725 A CN201611115725 A CN 201611115725A CN 106637735 A CN106637735 A CN 106637735A
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- China
- Prior art keywords
- motor
- trimming
- connecting rod
- component
- component body
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Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/10—Electrical or electromagnetic drives
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a trim thread, a lifting foot pressure mechanism and a sewing machine, belonging to the technical field of the sewing machine. The trim thread and the lifting foot pressure mechanism resolve the problems in the former sewing machines including the complex structure and the loud noise in an operation. The trim thread and the lifting foot pressure mechanism comprise an electrical machine. The driving parts are fixed in an output shaft of the electrical machine. The driving parts are provided with a driving part one and a driving part two. The driving part one and the driving part two are arranged on the both sides of the axis of electrical machine. The mechanism comprises a lifting foot pressure module and a trim thread module located on the first rotation direction of the electrical machine. The driving part one is linked with the lifting foot pressure module located on the second rotation direction of the electrical machine. The driving part two is linked with the trim thread module. The former two power elements are replaced with one electrical machine in the mechanism. The mechanism has the advantages of simplifying the structure as well as reducing the operating noise of the sewing machine.
Description
Technical field
The invention belongs to sewing machine technique field, is related to a kind of trimming and foot lifting mechanism.
Background technology
Chinese utility model patent (publication number：CN204608362U, publication date：20150902) a kind of sewing is disclosed
Machine, including presser bar lifting mechanismses, thread cutting mechanism, thread releasing mechanism, presser bar lifting mechanismses, thread releasing mechanism respectively with same driving horse
Up to being connected, thread cutting mechanism is connected with the electromagnetic actuator device being independently arranged.
In the sewing machine, in order to realize the function of sewing machine trimming, loose ends, presser foot lifter, a drive motor has been used
With an electromagnetic actuator device, its structure is complex, relatively costly, in addition, the operation of drive motor and electromagnetic actuator device,
Also so that the noise that produces in running of sewing machine is larger.
The content of the invention
The purpose of the present invention is for the problems referred to above, it is proposed that a kind of relatively simple trimming of structure and foot lifting mechanism.
The purpose of the present invention can be realized by following technical proposal：
Trimming and foot lifting mechanism, it is characterised in that including motor, described motor output shaft is fixed with actuator, institute
There is drive division one and drive division two, described drive division one and drive division two is located at electrical axis both sides on the actuator stated；
Mechanism also includes presser foot lifter component and trimming component, in the first rotation direction of the motor, drive division one and presser foot lifter
Component linkage is arranged, and in the second rotation direction of the motor, drive division two is arranged with the linkage of trimming component.
When sewing machine is normally sewed, motor is not rotated.When sewing is completed, need to carry out the actions such as trimming and presser foot lifter
When, first, motor turns an angle toward in the second rotation direction.Due in the second rotation direction of motor, drive division two
It is located on actuator with the linkage of trimming component, and drive division two, when motor drives actuator to rotate, drive division two swings necessarily
Radian, so as to drive trimming component action.After the completion of trimming, reset motor is rotated further toward the first rotation direction then, shines
Sample, motor turns an angle toward the first rotation direction, and drive division one drives presser foot lifter component action, completes presser foot lifter action.
In mechanism, due to sewing machine trimming and presser foot lifter action completed by a motor, therefore, mechanism
Structure is relatively simple.
In above-mentioned trimming and foot lifting mechanism, described presser foot lifter component includes connecting rod one and component body one, institute
The connecting rod one stated is hinged in component body one, and the connecting rod one has strip hole one, described drive in one end of motor
Dynamic portion one is in the form of a column and drive division one is located in strip hole one；In the first rotation direction of motor, motor passes through the band of connecting rod one
The action of dynamic component body one；In the second rotation direction of motor, drive division one is moved in strip hole one, the only winding of connecting rod one
Part body one is rotated.
Due to being provided with strip hole one on connecting rod one, motor rotates to complete trimming course of action toward the second rotation direction
In, connecting rod one is rotated only about component body one, and component body one is failure to actuate.Therefore, mechanism is carrying out the dynamic course of action of trimming
In, other parts actions in addition to trimming component that motor is driven are less, therefore so that mechanism produces in course of action
Raw noise is less.
In above-mentioned trimming and foot lifting mechanism, including the eccentric part being connected on sewing machine case, described bias
Part is resisted against in component body one.
During rotating eccentric part, eccentric part carries out the fine setting of pressure to component body one, eliminates between presser foot lifter part
Gap so that structure be in contact condition, to eliminate impact sound when lifting suddenly so that the noise of mechanism compared with
It is little.
In above-mentioned trimming and foot lifting mechanism, described trimming component includes connecting rod two and component body two, described
Connecting rod two be hinged on sewing machine case, the connecting rod two is connected with component body two；In the second rotation direction of motor,
Drive division two is resisted against on connecting rod two and motor drives the action of component body two by connecting rod two；In the first rotation side of motor
Upwards, drive division two departs from connecting rod two.
In the second rotation direction of motor, mechanism enters trimming action.In the first rotation direction of motor, i.e., when this
When mechanism carries out presser foot lifter action, drive division two departs from connecting rod two, therefore so that the noise that mechanism is produced in running
It is less.
In above-mentioned trimming and foot lifting mechanism, there is strip hole two, described component body on described connecting rod two
There is the location division being in the form of a column, described position point is in strip hole two on two.
Due to arranging strip hole two on connecting rod two, in the second rotation direction of motor, the swing of connecting rod two drives position
Location division in strip hole two is moved along a straight line, so as to complete trimming action.
In above-mentioned trimming and foot lifting mechanism, guidance set is connected with described component body two, described leads
To the support that component includes being fixed on sewing machine housing, guide post one is equipped with support, one end of guide post one is fixed on
In component body two, spring and the fixed block for support spring are arranged with the guide post one, described spring is located at and props up
Between frame and fixed block.
Guidance set is set in component body two so that component body is more steady in the course of action for carrying out trimming
It is fixed.In addition, the setting of spring, facilitates and resetted after mechanism trimming.
In above-mentioned trimming and foot lifting mechanism, the other end of described guide post one is fixed with routing frame, described to beat
Coil holder is resisted against on support, and described spring is in pretension compressive state.
When connecting rod two drives two action of component body, guide post one is also together driven, and leads because routing frame is fixed on
To on bar one, routing frame is also together driven, and completes routing action.In order to realize trimming action, typically set in component body two
There is cutter head assembly, reduction torsion spring is typically provided in cutter head assembly.Because in original state, back-moving spring compresses in pretension
State, back-moving spring this state can offset the elastic force of the reduction torsion spring in component body two so that the state of mechanism is more
It is stable.
In above-mentioned trimming and foot lifting mechanism, guide post two, described guide post are also equipped with described support
Two one end is fixed in component body two.
Action of the guide post two to component body two also plays guide effect, under the common cooperation with guide post one,
So that the structure in course of action of component body two is relatively stable.Further, since the setting of guide post two so that guide post one exists
It is difficult in course of action around own axis, so that the structure in course of action of component body two is more stable.
In above-mentioned trimming and foot lifting mechanism, sewing machine case is ensconced in described motor, by motor mounting plate
It is connected with sewing machine case.
Purpose of the invention, the invention allows for a kind of sewing machine, its technical scheme is as follows：
Sewing machine, it is characterised in that including above-mentioned trimming and foot lifting mechanism.
Compared with prior art, this trimming and foot lifting mechanism and sewing machine have advantages below：
1st, replace original two dynamical elements with a motor, driven by built-in motor rotating, replace existing two
The drive form of individual electric magnet or two external cylinders, both can fundamentally solve electric magnet temperature rise in machine operation and ask
Topic, the operating characteristic of making an uproar of shaking of machine can be effectively improved on the basis of the source of making an uproar that shakes is reduced number of again；On the other hand simultaneously
Also simplify structure, simplify the workload and debugging difficulty of assembling, while so that machine outward appearance be able to weight reducing it is attractive in appearance；
When the 2nd, carrying out an action, the unnecessary component actuation quantity of drive is few, reduces sewing machine operation noise；
3rd, guidance set is set so that Stability Analysis of Structures during trimming.
Description of the drawings
Fig. 1 is a kind of structural representation of embodiment that mechanism is arranged on sewing machine；
Fig. 2 is the structural representation of mechanism；
Fig. 3 is the structural representation at motor；
In figure, 1, motor；2nd, actuator；21st, drive division one；22nd, drive division two；3rd, presser foot lifter component；31st, connecting rod one；
32nd, component body one；33rd, strip hole one；4th, trimming component；41st, connecting rod two；42nd, component body two；43rd, strip hole two；44、
Location division；5th, eccentric part；6th, guidance set；61st, support；62nd, guide post one；63rd, spring；64th, fixed block；65th, guide post two；
7th, routing frame；8th, housing.
Specific embodiment
As shown in figure 1, this trimming and foot lifting mechanism are arranged on sewing machine case 8.In addition, as shown in Figures 2 and 3,
Mechanism includes the motor 1 being fixed in casing 8, and the output shaft of motor 1 is fixed with actuator 2, motor 1 sewing machine machine of ensconcing
Shell, is connected by motor mounting plate and sewing machine case.In the present embodiment, actuator 2 is in strip, and the middle part of actuator 2 is consolidated
It is scheduled on the output shaft of motor 1.The two ends of actuator 2 have drive division 1 and drive division 2 22.Specifically, the He of drive division 1
Drive division 2 22 is cylindrical.
Mechanism also includes being located at the presser foot lifter component 3 and the line shearing group positioned at motor lower position of the upper side position of motor 1
Part 4.In the first rotation direction of motor 1, in Fig. 1, the first rotation direction is counter clockwise direction, drive division 1 and presser foot lifter
The linkage of component 3 is arranged, and drive division 1 is arranged with the linkage of presser foot lifter component 3 and meant, in motor counter clockwise direction, motor
1 drives the action of presser foot lifter component 3 to realize presser foot lifter function by drive division 1；In the second rotation direction of motor 1, figure
In 1, the second rotation direction for clockwise, drive division 2 22 is arranged with the linkage of trimming component 4, in the same old way, drive division 2 22 with
The linkage of trimming component 4 is arranged and meant, motor 1 drives trimming component 4 by drive division 2 22 in motor clockwise
Action is realizing trimming function.
Presser foot lifter component 3 includes connecting rod 1 and component body 1, and in Fig. 1, the general vertical of connecting rod 1 is arranged.Connecting rod
One 31 are hinged in component body 1.Connecting rod 1 has strip hole 1 in one end of motor 1, and drive division 1 is in
Column and drive division 1 are located in strip hole 1；In the first rotation direction of motor 1, motor 1 passes through the band of connecting rod 1
The action of dynamic component body 1；In the second rotation direction of motor 1, drive division 1 is moved in strip hole 1, connecting rod
One 31 rotate only about component body 1.
Due to being provided with strip hole 1 on connecting rod 1, motor 1 is rotated toward the second rotation direction and moved with completing trimming
During work, connecting rod 1 is rotated only about component body 1, and component body 1 is failure to actuate.Therefore, mechanism is being cut
In the dynamic course of action of line, other parts actions in addition to trimming component 4 that motor 1 is driven are less, therefore so that mechanism
The noise produced in course of action is less.
Mechanism also includes the eccentric part 5 being connected on sewing machine case 8, and eccentric part 5 is resisted against in component body 1.
In the present embodiment, the concrete structure of eccentric part 5 is eccentric pin.During rotating eccentric part 5, eccentric part 5 is to component sheet
Body 1 carries out the fine setting of pressure, eliminates the gap between presser foot lifter part so that structure is in contact condition, to eliminate presser foot lifter
Impact sound when lifting suddenly, so that the noise of mechanism is less.
Trimming component 4 includes connecting rod 2 41 and component body 2 42, and connecting rod 2 41 is hinged on sewing machine case 8, connecting rod
2 41 are connected with component body 2 42；In the second rotation direction of motor 1, drive division 2 22 be resisted against on connecting rod 2 41 and
Motor 1 drives the action of component body 2 42 by connecting rod 2 41；In the first rotation direction of motor 1, drive division 2 22 departs from
Connecting rod 2 41.
In the second rotation direction of motor 1, mechanism enters trimming action.In the first rotation direction of motor 1, i.e., when
When mechanism carries out presser foot lifter action, drive division 2 22 departs from connecting rod 2 41, therefore so that mechanism is produced in running
Noise it is less.
There is strip hole 2 43 on connecting rod 2 41, there is the location division 44 being in the form of a column, location division 44 in component body 2 42
In strip hole 2 43.Due to arranging strip hole 2 43, in the second rotation direction of motor 1, connecting rod on connecting rod 2 41
2 41 swing drives the location division 44 in strip hole 2 43 to be moved along a straight line, so as to complete trimming action.
Guidance set 6 is connected with component body 2 42, guidance set 6 includes the support being fixed on the body 8 of sewing casing 8
61, guide post 1 is equipped with support 61, one end of guide post 1 is fixed in component body 2 42, on guide post 1
Spring 63 and the fixed block 64 for support spring 63 are arranged with, spring 63 is located between support 61 and fixed block 64.Guide post
One 62 other end is fixed with routing frame 7, and routing frame 7 is resisted against on support 61, and back-moving spring 63 is in pretension compressive state.
Guide post 2 65 is also equipped with frame 61, one end of guide post 2 65 is fixed in component body 2 42.
In component body 2 42 arrange guidance set 6 so that component body in the course of action for carrying out trimming more
It is stable.In addition, the setting of spring 63, facilitates and resetted after mechanism trimming.
When connecting rod 2 41 drives 2 42 action of component body, guide post 1 is also together driven, because routing frame 7 is consolidated
It is scheduled on guide post 1, routing frame 7 is also together driven, completes routing action.In order to realize trimming action, component body two
Cutter head assembly is typically provided in 42, reduction torsion spring is typically provided in cutter head assembly.Because in original state, back-moving spring 63 is
In pretension compressive state, back-moving spring 63 this state can offset the elastic force of the reduction torsion spring in component body 2 42 so that
The state of mechanism is relatively stable.In addition, the action of 2 65 pairs of component bodies 2 42 of guide post also plays guide effect, with
Under the common cooperation of guide post 1 so that the structure in course of action of component body 2 42 is relatively stable.Further, since being oriented to
The setting of bar 2 65 so that guide post 1 is difficult around own axis in course of action, so that component body two
42 in course of action structure it is more stable.
When sewing machine is normally sewed, motor 1 is not rotated.When sewing is completed, need to carry out trimming and presser foot lifter etc. and move
When making, first, motor 1 turns an angle toward in the second rotation direction.Due in the second rotation direction of motor 1, driving
Portion 2 22 links with trimming component 4, and drive division 2 22 is located on actuator 2, when motor 1 drives actuator 2 to rotate, drives
Portion 2 22 swings certain radian, so as to drive the action of trimming component 4.After the completion of trimming, motor 1 resets, and rotates toward first then
Direction is rotated further, and in the same old way, motor 1 turns an angle toward the first rotation direction, and drive division 1 drives presser foot lifter component 3 to move
Make, complete presser foot lifter action.
In mechanism, due to sewing machine trimming and presser foot lifter action completed by a motor 1, therefore, mechanism
Structure it is relatively simple.
Purpose of the invention, the invention allows for a kind of sewing machine, its technical scheme is as follows：
Sewing machine, including above-mentioned trimming and foot lifting mechanism.
Claims (10)
1. trimming and foot lifting mechanism, it is characterised in that including motor (1), described motor (1) output shaft is fixed with actuator
(2), there is drive division one (21) and drive division two (22), described drive division one (21) and driving on described actuator (2)
Portion two (22) is positioned at motor (1) axis both sides；Mechanism also includes presser foot lifter component (3) and trimming component (4), in the motor
(1) in the first rotation direction, drive division one (21) is arranged with presser foot lifter component (3) linkage, at second turn of the motor (1)
On dynamic direction, drive division two (22) is arranged with trimming component (4) linkage.
2. trimming according to claim 1 and foot lifting mechanism, it is characterised in that described presser foot lifter component (3) includes
Connecting rod one (31) and component body one (32), described connecting rod one (31) is hinged in component body one (32), the connecting rod one
(31) there is strip hole one (33) in one end of motor (1), described drive division one (21) is in the form of a column and drive division one
(21) in strip hole one (33)；In the first rotation direction of motor (1), motor (1) is by the drive group of connecting rod one (31)
The action of part body one (32)；In the second rotation direction of motor (1), drive division one (21) is moved in strip hole one (33),
Connecting rod one (31) is rotated only about component body one (32).
3. trimming according to claim 2 and foot lifting mechanism, it is characterised in that including being connected on sewing machine case
Eccentric part (5), described eccentric part (5) is resisted against in component body one (32).
4. trimming according to claim 1 and foot lifting mechanism, it is characterised in that described trimming component (4) is included even
Bar two (41) and component body two (42), described connecting rod two (41) is hinged on sewing machine case, the connecting rod two (41) with
Component body two (42) is connected；In the second rotation direction of motor (1), drive division two (22) is resisted against on connecting rod two (41) simultaneously
And motor (1) drives the action of component body two (42) by connecting rod two (41)；In the first rotation direction of motor (1), drive
Portion two (22) departs from connecting rod two (41).
5. trimming according to claim 4 and foot lifting mechanism, it is characterised in that there is bar on described connecting rod two (41)
Shape hole two (43), has the location division (44) being in the form of a column in described component body two (42), described location division (44) is located at
In strip hole two (43).
6. the trimming and foot lifting mechanism according to claim 4 or 5, it is characterised in that described component body two (42)
On be connected with guidance set (6), described guidance set (6) is including the support (61) being fixed on sewing machine housing (8), support
(61) guide post one (62) is equipped with, one end of guide post one (62) is fixed in component body two (42), the guide post
Spring (63) and the fixed block (64) for support spring (63) are arranged with one (62), described spring (63) is positioned at support
(61) and fixed block (64) between.
7. trimming according to claim 6 and foot lifting mechanism, it is characterised in that described guide post one (62) it is another
End is fixed with routing frame (7), and the routing frame (7) is resisted against on support (61), and described spring (63) compresses shape in pretension
State.
8. trimming according to claim 6 and foot lifting mechanism, it is characterised in that be also equipped with described support (61)
Guide post two (65), one end of described guide post two (65) is fixed in component body two (42).
9. trimming according to claim 1 and foot lifting mechanism, it is characterised in that sewing is ensconced in described motor (1)
Machine casing, is connected by motor mounting plate and sewing machine case.
10. sewing machine, it is characterised in that including trimming and foot lifting mechanism any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611115725.0A CN106637735B (en) | 2016-12-07 | 2016-12-07 | Thread trimming and presser foot lifting mechanism and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611115725.0A CN106637735B (en) | 2016-12-07 | 2016-12-07 | Thread trimming and presser foot lifting mechanism and sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106637735A true CN106637735A (en) | 2017-05-10 |
| CN106637735B CN106637735B (en) | 2020-01-31 |
Family
ID=58818602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611115725.0A Active CN106637735B (en) | 2016-12-07 | 2016-12-07 | Thread trimming and presser foot lifting mechanism and sewing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN106637735B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988032A (en) * | 2017-05-23 | 2017-07-28 | 拓卡奔马机电科技有限公司 | Automatic needle-foot-lifting mechanism and button-sewing machine |
| CN107012598A (en) * | 2017-05-23 | 2017-08-04 | 拓卡奔马机电科技有限公司 | Automatic needle-foot-lifting mechanism and button-sewing machine |
| CN109112733A (en) * | 2018-09-26 | 2019-01-01 | 杰克缝纫机股份有限公司 | A kind of defence line rough cutter disk and sewing machine |
| CN109440312A (en) * | 2019-01-10 | 2019-03-08 | 杰克缝纫机股份有限公司 | The control method of trimming and presser foot lifting device on a kind of sewing machine |
| CN109837662A (en) * | 2019-04-07 | 2019-06-04 | 杰克缝纫机股份有限公司 | A kind of thread-trimming lifter-presser foot mechanism and sewing machine |
| CN109957893A (en) * | 2017-12-22 | 2019-07-02 | 浙江中捷缝纫科技有限公司 | Driving structure of sewing and the sewing machine with it |
| WO2020181904A1 (en) * | 2019-03-11 | 2020-09-17 | 浙江翔科缝纫机股份有限公司 | Automatic pressing foot lifting thread-loosening mechanism and sewing machine |
| CN114990794A (en) * | 2021-03-01 | 2022-09-02 | 杰克科技股份有限公司 | Sewing machine with same motor for controlling pressure of presser foot, lifting presser foot and trimming |
| CN114990796A (en) * | 2021-03-01 | 2022-09-02 | 杰克科技股份有限公司 | Sewing machine with same motor for controlling pressure of presser foot, lifting presser foot and loosening thread during thread trimming |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106988032A (en) * | 2017-05-23 | 2017-07-28 | 拓卡奔马机电科技有限公司 | Automatic needle-foot-lifting mechanism and button-sewing machine |
| CN109957893A (en) * | 2017-12-22 | 2019-07-02 | 浙江中捷缝纫科技有限公司 | Driving structure of sewing and the sewing machine with it |
| CN109112733B (en) * | 2018-09-26 | 2020-11-27 | 杰克缝纫机股份有限公司 | Thread-fuzzing-preventing cutter head and sewing machine |
| CN109112733A (en) * | 2018-09-26 | 2019-01-01 | 杰克缝纫机股份有限公司 | A kind of defence line rough cutter disk and sewing machine |
| CN109440312A (en) * | 2019-01-10 | 2019-03-08 | 杰克缝纫机股份有限公司 | The control method of trimming and presser foot lifting device on a kind of sewing machine |
| WO2020181904A1 (en) * | 2019-03-11 | 2020-09-17 | 浙江翔科缝纫机股份有限公司 | Automatic pressing foot lifting thread-loosening mechanism and sewing machine |
| CN109837662A (en) * | 2019-04-07 | 2019-06-04 | 杰克缝纫机股份有限公司 | A kind of thread-trimming lifter-presser foot mechanism and sewing machine |
| CN114990794A (en) * | 2021-03-01 | 2022-09-02 | 杰克科技股份有限公司 | Sewing machine with same motor for controlling pressure of presser foot, lifting presser foot and trimming |
| CN114990796A (en) * | 2021-03-01 | 2022-09-02 | 杰克科技股份有限公司 | Sewing machine with same motor for controlling pressure of presser foot, lifting presser foot and loosening thread during thread trimming |
| CN114990794B (en) * | 2021-03-01 | 2023-06-20 | 杰克科技股份有限公司 | Sewing machine with same motor for controlling pressure of presser foot, lifting presser foot and cutting thread |
| CN114990796B (en) * | 2021-03-01 | 2023-06-20 | 杰克科技股份有限公司 | Sewing machine with same motor for controlling pressure of presser foot, lifting presser foot and cutting and loosening thread |
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| CN106637735B (en) | 2020-01-31 |
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Address after: 318014 No. 1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Jack Technology Co.,Ltd. Address before: 318010 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Patentee before: JACK SEWING MACHINE Co.,Ltd. |