CN210031085U - Sewing machine and lift presser foot thread loosening mechanism - Google Patents
Sewing machine and lift presser foot thread loosening mechanism Download PDFInfo
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- CN210031085U CN210031085U CN201920342781.0U CN201920342781U CN210031085U CN 210031085 U CN210031085 U CN 210031085U CN 201920342781 U CN201920342781 U CN 201920342781U CN 210031085 U CN210031085 U CN 210031085U
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Abstract
The utility model belongs to the technical field of sewing equipment, in particular to a sewing machine and a presser foot lifting and releasing mechanism; the first forked part, the second forked part and the third forked part are arranged on the lifting and pressing line loosening top plate, the outer ends of the first forked part, the second forked part and the third forked part are respectively a first connecting end, a second connecting end and a third connecting end, the lifting and pressing line loosening top plate is rotatably connected to the shell through a lifting and pressing line loosening pin, a rotating shaft of the motor is connected with the first connecting end of the lifting and pressing line loosening top plate through a lifting and pressing line loosening crank, the two connecting ends can lift a pressing rod guide frame upwards when a pressing foot is lifted, the third connecting end of the lifting and pressing line loosening top plate is positioned on one side of the wire clamping device, and the rotating shaft of the motor rotates clockwise or anticlockwise to drive the lifting and pressing line loosening top plate to rotate clockwise or anticlockwise around the lifting and pressing line loosening pin so as to realize the lifting and pressing foot and line loosening actions or the; the utility model discloses by a motor control loose wire action with lift the presser foot action, compact structure effectively reduction in production cost.
Description
The technical field is as follows:
the utility model belongs to the technical field of make up equipment, refer in particular to a sewing machine and lift presser foot thread slacking mechanism.
Background art:
a thread tension device is generally provided in a sewing machine. The thread clamping device has the advantages that when the sewing machine works, the thread clamping device clamps a thread, so that the thread has proper tightness; when the sewing is finished and the thread is automatically cut, the thread clamping device cannot be automatically loosened, and the thread loosening device is required to be arranged to control the automatic loosening of the thread clamping device.
The sewing machine is also provided with a presser foot device. The presser foot is arranged above the sewing material when the sewing machine works, and the action of lifting the presser foot is driven by the presser foot lifting device.
The automatic thread releasing mechanism of the sewing machine disclosed in the Chinese patent CN 204644631U comprises a linear driver, a swing crank arranged below the linear driver, a thread releasing top plate with an inclined plane and a thread releasing ejector rod supported on the inclined plane of the thread releasing top plate, wherein the other end of the thread releasing ejector rod is supported on a thread clamp with a reset spring, a shaft hole is formed in the swing crank, a top plate shaft is fixedly connected in the shaft hole, one end of the top plate shaft is penetrated and fixedly connected on the thread releasing top plate, the swing crank does circumferential swing around the central axis of the top plate shaft, and the top plate shaft is sleeved with a reset torsion spring acting on the thread releasing top plate.
When an electric control sends a thread releasing signal, the linear driver is powered on, the straight rod is pushed out downwards to drive the swinging crank to rotate anticlockwise to drive the thread releasing top plate to swing synchronously, the thread releasing ejector rod in contact with the thread releasing top plate moves rightwards under the pushing of the inclined surface of the thread releasing top plate, the thread releasing ejector rod pushes the thread releasing nail, and the thread clamping device releases threads. After the power is off, the straight rod resets under the action of the reset spring, the thread releasing top plate and the swinging crank reset under the action of the reset torsion spring, the thread clamping device resets under the action of the reset spring, and the thread clamping device is in a thread clamping state.
The presser foot lifting mechanism is characterized in that the upper end of the crank is connected with the connecting rod, an iron core of the electromagnet is abutted against the bottom of the lower end of the crank, the presser foot lifting mechanism further comprises a knee control ejector rod and a deflector rod, one end of the deflector rod is connected with the end part of the lower end of the crank, the other end of the deflector rod is hinged with the shell of the sewing machine, and the top of the knee control ejector rod is hinged with the middle part of the deflector rod.
From the above, the thread loosening and the presser foot lifting action of the existing sewing machine are respectively driven by two independent drivers, and the sewing machine has the defects of high cost, complex structure, long assembly time and the like.
The invention content is as follows:
the utility model aims at providing a compact structure, reduction in production cost's sewing machine and lift presser foot thread slacking mechanism automatically.
The utility model discloses a realize like this:
one of the purposes of the utility model is to provide a presser foot lifting and releasing mechanism, which comprises a presser foot component, a wire clamping device, a motor and a presser foot lifting and releasing top plate; the first forked part, the second forked part and the third forked part are arranged on the lifting and pressing line loosening top plate and are positioned on two sides of the second forked part, the outer ends of the first forked part, the second forked part and the third forked part are respectively a first connecting end, a second connecting end and a third connecting end, the lifting and pressing line loosening top plate is rotatably connected to the machine shell through a lifting and pressing pin loosening pin, a rotating shaft of a motor is connected with the first connecting end of the lifting and pressing line loosening top plate through a lifting and pressing pin loosening crank, the second connecting end of the lifting and pressing line loosening top plate is positioned below a pressure bar guide frame of the pressure bar component, the second connecting end can lift the pressure bar guide frame upwards when the pressure bar is lifted, the third connecting end of the lifting and pressing line loosening top plate is positioned on one side of the wire clamping device, the side surface of the third connecting end, which is adjacent to the wire clamping device, and the distance between the lifting and pressing line loosening top plate and the wire clamping device is changed when the lifting and pressing line loosening top plate rotates around the, the rotating shaft of the motor rotates clockwise or anticlockwise to drive the presser foot lifting and releasing thread top plate to rotate clockwise or anticlockwise around the presser foot lifting and releasing thread pin to realize the action of presser foot lifting and releasing thread or reset of the presser foot lifting and releasing thread top plate.
In the presser foot lifting and releasing mechanism, a torsion spring is sleeved on the presser foot lifting and releasing pin, a pressure spring lifting and returning pin is arranged on the machine shell below the pressure wire lifting and releasing top plate, a rotating arm at one end of the torsion spring abuts against the right side face of the second bifurcate part, and the other end of the torsion spring abuts against the pressure spring lifting and returning pin.
In the above presser foot lifting and thread loosening mechanism, the presser foot assembly includes a presser foot rod and a presser foot arranged at the lower end of the presser foot rod, and the presser foot guide frame is fixedly arranged at the upper end of the presser foot rod.
In the presser foot lifting and releasing mechanism, one end of the presser foot lifting and releasing crank is fixedly connected with the rotating shaft of the motor, the other end of the presser foot lifting and releasing crank is provided with the elongated hole, and the shaft position screw penetrates through the elongated hole to be screwed on the second connecting end to realize the connection of the presser foot lifting and releasing crank and the presser foot lifting and releasing top plate.
In the presser foot lifting and releasing mechanism, one end of the presser foot lifting and releasing crank is fixedly connected with the rotating shaft of the motor, the second connecting end is provided with a strip-shaped hole, and a shaft position screw penetrates through the strip-shaped hole and is screwed at the other end of the presser foot lifting and releasing crank to realize the connection of the presser foot lifting and releasing crank and the presser foot lifting and releasing top plate.
In the presser foot lifting and releasing mechanism, clamp springs for limiting the torsion spring are arranged on the presser foot lifting and releasing pins on two sides of the torsion spring.
In the presser foot lifting and loosening mechanism, an installation part is arranged at one end of the presser foot lifting and loosening crank, a motor rotating shaft hole is arranged on the installation part, a rotating shaft of the motor is inserted into the motor rotating shaft hole, a threaded hole is radially arranged on the installation part, and a positioning screw is screwed in the threaded hole, and the end part of the positioning screw is tightly propped on the rotating shaft to realize the fixed connection of the presser foot lifting and loosening crank and the rotating shaft of the motor.
In the presser foot lifting and thread loosening mechanism, a plane is axially arranged on a rotating shaft of the motor, and the end part of the positioning screw is tightly pressed on the plane.
In the presser foot lifting and releasing mechanism, the motor is a stepping motor or a grating motor.
Another object of the present invention is to provide a sewing machine, which comprises the above-mentioned presser foot lifting and thread releasing mechanism.
Compared with the prior art, the utility model outstanding advantage is:
the utility model discloses by a motor control loose wire action with lift the presser foot action, compact structure, effective reduction in production cost, and it is little as the power supply noise to use the motor.
Description of the drawings:
fig. 1 is one of the schematic views of the presser foot lifting and releasing mechanism of the present invention disposed on the housing, wherein the elongated hole is located on the presser foot lifting and releasing crank;
fig. 2 is a second schematic view of the presser foot lifting and releasing mechanism of the present invention disposed on the housing, wherein the elongated hole is located on the presser foot lifting and releasing crank;
fig. 3 is one of the schematic perspective views of the present invention, wherein the elongated hole is located on the presser foot lifting and releasing crank;
fig. 4 is a second schematic perspective view of the present invention, wherein the elongated hole is located on the presser foot lifting and releasing crank;
fig. 5 is one of the schematic diagrams of the top plate of the lifting and pressing release line of the present invention;
fig. 6 is a second schematic view of the top plate of the lift release line of the present invention;
fig. 7 is a third schematic view of the top plate of the present invention;
fig. 8 is a fourth schematic view of the top plate of the pressure relief wire of the present invention;
fig. 9 is a schematic view of the presser foot lifting and releasing crank of the present invention, wherein the presser foot lifting and releasing crank is provided with a strip-shaped hole;
fig. 10 is a third schematic view of the presser foot lifting and thread releasing mechanism of the present invention disposed on the housing, wherein the elongated hole is located on the presser foot lifting and thread releasing top plate;
fig. 11 is a second schematic perspective view of the present invention, in which the elongated hole is located on the top plate of the lifting and pressing loosening line;
fig. 12 is a third schematic view of the top plate of the lifting and pressing line loosening of the present invention, wherein the top plate of the lifting and pressing line loosening is provided with a strip-shaped hole;
fig. 13 is a schematic view of the presser foot lifting and releasing crank of the present invention;
fig. 14 is a schematic view of the wire gripper of the present invention.
In the figure: 1. a motor; 2. lifting and pressing a line loosening top plate; 3. a housing; 4. a first connection end; 5. a second connection end; 6. a third connection end; 7. lifting a presser foot thread loosening pin; 8. a rotating shaft; 9. lifting a presser foot thread loosening crank; 10. a compression bar guide frame; 11. a take-up spring adjusting seat; 12. loosening the thread and assisting the nail; 13. a wire clamping sheet; 14. a wire clamping nut; 15. A wire clamping spring; 16. loosening the thread nail; 17. a return spring; 18. a presser bar; 19. a presser foot; 20. a torsion spring; 21. A spring return pin is lifted and pressed; 22. a clamp spring; 23. a strip-shaped hole; 24. an axial screw; 25. a threaded bore.
The specific implementation mode is as follows:
the invention will now be further described with reference to specific embodiments, with reference to figures 1 to 14:
one of the purposes of the utility model is to provide a lift presser foot thread releasing mechanism, include presser foot subassembly, wire trapper, motor 1, lift presser foot thread releasing roof 2, wherein motor 1 is step motor, also can be grating motor etc.. A stepper motor is preferred for this embodiment. The motor 1 is fixed on the housing 3. The lifting and pressing line loosening top plate 2 is provided with a first forked part, a second forked part and a third forked part, the first forked part and the third forked part are located on two sides of the second forked part, the outer ends of the first forked part, the second forked part and the third forked part are respectively a first connecting end 4, a second connecting end 5 and a third connecting end 6, the lifting and pressing line loosening top plate 2 is rotatably connected to the machine shell 3 through a lifting and pressing line loosening pin 7, a rotating shaft 8 of the motor 1 is connected with the first connecting end 4 of the lifting and pressing line loosening top plate 2 through a lifting and pressing line loosening crank 9, the second connecting end 5 of the lifting and pressing line loosening top plate 2 is located below a pressure bar guide frame 10 of the pressure bar component, the second connecting end 5 can lift the pressure bar guide frame 10 upwards when the pressure bar is lifted, the third connecting end 6 of the pressing line loosening top plate 2 is located on one side of the wire clamping device, the side face, which is adjacent to the third connecting end 6 is an inclined face, and the inclined face of the wire clamping device are inclined faces, and the lifting and pressing line loosening top plate 2 rotates around And the rotating shaft 8 of the motor 1 rotates clockwise or anticlockwise to drive the presser foot lifting and releasing thread top plate 2 to rotate clockwise or anticlockwise around the presser foot lifting and releasing thread pin 7 to realize the presser foot lifting and releasing action or resetting of the presser foot lifting and releasing thread top plate 2.
The utility model discloses a thread tension device comprises a thread take-up spring adjusting seat 11 and a thread loosening auxiliary nail 12, the thread take-up spring adjusting seat 11 and the thread loosening auxiliary nail 12 are arranged on a machine shell 3, a thread loosening fixing mounting hole is arranged in the thread take-up spring adjusting seat 11 along the axial direction, the front end part of the thread take-up spring adjusting seat 11 extends out of the machine shell 3, a thread clamping sheet abutting surface is arranged on the thread take-up spring adjusting seat 11, two thread clamping sheets 13 and a thread clamping nut 14 are arranged at the front end of the thread take-up spring adjusting seat 11, a thread clamping spring 15 is arranged between the thread clamping sheets 13 and the thread clamping nut 14 to abut the thread clamping sheet abutting surface, one end of the thread loosening nail 16 is arranged in the thread loosening nail mounting hole and abuts against the thread clamping sheet 13 positioned at the outer side, the other end extends out of the rear end of the thread take-up spring adjusting seat 11, the thread loosening auxiliary nail 12 and the axis of the thread loosening nail 16 are coaxially or parallelly arranged, and the thread loosening auxiliary nail 12 can abut against the, a clamp spring is arranged on the loose wire auxiliary nail 12, a return spring 17 is sleeved outside the loose wire nail 16, one end of the return spring 17 is tightly propped against the rear side surface of the take-up spring adjusting seat 11, and the other end of the return spring 17 is tightly propped against the clamp spring. When the inclined plane on the third connecting end 6 acts on the auxiliary loose wire nail 12, the auxiliary loose wire nail 12 is driven to abut against the loose wire nail 16 along with the change of the inclined plane angle, and then the wire clamping sheet 13 positioned on the outer side is jacked open to achieve the purpose of loosening. When the auxiliary thread-releasing nail 12 is reset under the action of the reset spring 17, the thread-clamping spring 15 drives the thread-releasing nail 16 to reset, and the two thread-clamping sheets 13 are attached again to realize the thread-clamping action.
Further, the presser foot assembly comprises a presser foot rod 18 and a presser foot 19 arranged at the lower end of the presser foot rod 18, and the presser bar guide 10 is fixedly arranged at the upper end of the presser foot rod 18. The presser bar guide 10 and the presser bar 18 are lifted and lowered synchronously.
Further, a torsion spring 20 is sleeved on the presser foot lifting and releasing wire pin 7, a presser foot lifting and releasing spring return pin 21 is arranged on the machine shell 3 below the presser foot lifting and releasing wire top plate 2, a rotating arm at one end of the torsion spring 20 abuts against the right side surface of the second fork part, and the other end of the torsion spring 20 abuts against the presser foot lifting and releasing spring return pin 21. The torsion spring 20 can assist in lifting and pressing the wire releasing top plate 2 to reset. The top plate 2 for lifting and pressing the loose wire resets so as to drive the presser foot 19 to press downwards and clamp the wire clamper again.
In order to prevent the torsion spring 20 from moving on the presser foot thread loosening pin 7 and even being separated from the presser foot thread loosening pin 7, clamp springs 22 for limiting the torsion spring 20 are arranged on the presser foot thread loosening pin 7 on both sides of the torsion spring 20. In actual use, the clamp spring 22 can be replaced by a retainer ring or a direct upsetting mode. But the preferred jump ring 22 of this embodiment has advantages such as occupation space is little, simple structure, easy dismounting.
The pivot 8 of motor 1 through lift presser foot thread loosening crank 9 with lift the concrete structure that first link 4 of thread loosening roof 2 is connected as follows:
one structure is as follows: one end of the presser foot lifting and releasing crank 9 is fixedly connected with a rotating shaft 8 of the motor 1, the other end of the presser foot lifting and releasing crank is provided with a long-strip-shaped hole 23, and an axis position screw 24 penetrates through the long-strip-shaped hole 23 to be screwed on the second connecting end 4 to realize the connection of the presser foot lifting and releasing crank 9 and the presser foot lifting and releasing top plate 2.
The other structure is as follows: one end of the presser foot lifting and releasing crank 9 is fixedly connected with a rotating shaft 8 of the motor 1, a long-strip-shaped hole 23 is formed in the second connecting end 4, and an axial position screw penetrates through the long-strip-shaped hole 23 and is in screwed connection with the other end of the presser foot lifting and releasing crank 9 to achieve connection of the presser foot lifting and releasing crank 9 and the presser foot lifting and releasing top plate 2.
Further, the specific connection structure of the presser foot lifting and releasing crank 9 and the rotating shaft 8 of the motor 1 is as follows: an installation part is arranged at one end of the presser foot lifting and loosening crank 9, a motor rotating shaft hole is formed in the installation part, a rotating shaft 8 of the motor 1 is inserted into the motor rotating shaft hole, a threaded hole 25 is radially formed in the installation part, a positioning screw is screwed in the threaded hole 25, and the end part of the positioning screw is tightly propped against the rotating shaft 8 to realize the fixed connection of the presser foot lifting and loosening crank 9 and the rotating shaft 8 of the motor 1.
In order to improve the connection firmness, a plane is axially arranged on the rotating shaft 8 of the motor 1, and the end part of the positioning screw is tightly pressed on the plane.
The utility model discloses a theory of operation:
when the presser foot is lifted, the thread lifting and releasing top plate 2 rotates clockwise under the driving of the motor 1, and at the moment, the second connecting end 5 of the thread lifting and releasing top plate 2 exerts an upward force on the pressure lever guide frame 10 to lift the presser foot 19. Meanwhile, the thread loosening auxiliary nail 12 of the third connecting end 6, which acts on the thread clamping device, pushes open the thread clamping sheet 13 on the outer side of the thread clamping device, and thread loosening is achieved.
When resetting, the motor 1 drives the lifting and pressing line releasing top plate 2 to rotate anticlockwise, and at the moment, the torsion spring 20 plays an auxiliary role in resetting the lifting and pressing line releasing top plate 2. The force of the second connecting end 4 acting on the pressure bar guide frame 10 disappears, and the force of the third connecting end 6 acting on the thread-loosening auxiliary nail 12 also disappears gradually. The outside thread clamping sheets 13 are reset under the action of the thread clamping spring 15, the thread releasing auxiliary nail 12 is reset under the action of the reset spring 17, and at the moment, the two thread clamping sheets 13 clamp the upper thread again. In addition, since the presser foot 19 is connected to the housing 3 through the pressure regulating spring and the pressure regulating nut, the presser foot lever 18 and the presser foot 19 are automatically returned by the pressure regulating spring after the force acting on the presser foot guide 10 disappears.
Another object of the present invention is to provide a sewing machine, comprising the above presser foot lifting and thread releasing mechanism.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. A presser foot lifting and thread loosening mechanism comprises a presser foot component and a thread clamping device; the method is characterized in that: the presser foot lifting and releasing line machine further comprises a motor (1) and a presser foot lifting and releasing line top plate (2), wherein a first forked part, a second forked part and a third forked part are arranged on the presser foot lifting and releasing line top plate (2), the first forked part and the third forked part are positioned on two sides of the second forked part, the outer ends of the first forked part, the second forked part and the third forked part are respectively a first connecting end (4), a second connecting end (5) and a third connecting end (6), the presser foot lifting and releasing line top plate (2) is rotatably connected to the machine shell (3) through a presser foot lifting and releasing line pin (7), a rotating shaft (8) of the motor (1) is connected with the first connecting end (4) of the presser foot lifting and releasing line top plate (2) through a presser foot lifting and releasing line crank (9), the second connecting end (5) of the presser foot lifting and releasing line top plate (2) is positioned below a guide frame (10) of the presser foot component, and the second connecting end (5) can lift the presser foot guide frame (10) upwards when the, the third connecting end (6) of the top plate (2) for lifting and pressing the loose wire is positioned on one side of the wire clamp, the side surface of the third connecting end (6) adjacent to the wire clamp is an inclined surface, the distance between the inclined surface and the wire clamp is changed when the top plate (2) for lifting and pressing the loose wire rotates around the pin (7) for lifting and pressing the loose wire, and the rotating shaft (8) of the motor (1) rotates clockwise or anticlockwise to drive the top plate (2) for lifting and pressing the loose wire to rotate clockwise or anticlockwise around the pin (7) for lifting and pressing the loose wire to realize the actions of lifting and pressing the loose wire or the reset of the top plate (2) for lifting and pressing the loose wire.
2. The presser foot lifting and releasing mechanism as claimed in claim 1, wherein: the lifting and pressing foot thread loosening pin (7) is sleeved with a torsion spring (20), a lifting and pressing spring reset pin (21) is arranged on the machine shell (3) below the lifting and pressing thread loosening top plate (2), a rotating arm at one end of the torsion spring (20) abuts against the right side face of the second bifurcate part, and the other end of the torsion spring abuts against the lifting and pressing spring reset pin (21).
3. The presser foot lifting and releasing mechanism as claimed in claim 1, wherein: the pressure foot component comprises a pressure foot rod (18) and a pressure foot (19) arranged at the lower end of the pressure foot rod (18), and the pressure rod guide frame (10) is fixedly arranged at the upper end of the pressure foot rod (18).
4. The presser foot lifting and releasing mechanism as claimed in claim 1, wherein: one end of the presser foot lifting and releasing crank (9) is fixedly connected with a rotating shaft (8) of the motor (1), the other end of the presser foot lifting and releasing crank is provided with a long-strip-shaped hole (23), and an axial position screw (24) penetrates through the long-strip-shaped hole (23) to be screwed on the second connecting end (5) to realize the connection of the presser foot lifting and releasing crank (9) and the presser foot lifting and releasing top plate (2).
5. The presser foot lifting and releasing mechanism as claimed in claim 1, wherein: one end of the presser foot lifting and loosening crank (9) is fixedly connected with a rotating shaft (8) of the motor (1), a long-strip-shaped hole (23) is formed in the second connecting end (5), and an axial position screw penetrates through the long-strip-shaped hole (23) to be screwed at the other end of the presser foot lifting and loosening crank (9) to achieve connection of the presser foot lifting and loosening crank (9) and the presser foot lifting and loosening top plate (2).
6. The presser foot lifting and releasing mechanism as claimed in claim 2, wherein: and clamp springs (22) for limiting the torsion spring (20) are arranged on the presser foot thread releasing pins (7) on the two sides of the torsion spring (20).
7. The presser foot lifting and releasing mechanism as claimed in claim 1, wherein: an installation part is arranged at one end of the presser foot lifting and loosening crank (9), a motor rotating shaft hole is formed in the installation part, a rotating shaft (8) of the motor (1) is inserted into the motor rotating shaft hole, a threaded hole (25) is radially formed in the installation part, a positioning screw is screwed in the threaded hole (25), and the end part of the positioning screw is tightly pressed on the rotating shaft (8) to realize the fixed connection of the presser foot lifting and loosening crank (9) and the rotating shaft (8) of the motor (1).
8. The presser foot lifting and releasing mechanism as claimed in claim 7, wherein: a plane is axially arranged on a rotating shaft (8) of the motor (1), and the end part of the positioning screw is tightly pressed on the plane.
9. The presser foot lifting and releasing mechanism as claimed in claim 1, wherein: the motor (1) is a stepping motor (1) or a grating motor (1).
10. A sewing machine characterized by: comprising the presser foot thread take-up and release mechanism of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920342781.0U CN210031085U (en) | 2019-03-18 | 2019-03-18 | Sewing machine and lift presser foot thread loosening mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920342781.0U CN210031085U (en) | 2019-03-18 | 2019-03-18 | Sewing machine and lift presser foot thread loosening mechanism |
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| Publication Number | Publication Date |
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| CN210031085U true CN210031085U (en) | 2020-02-07 |
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|---|---|---|---|
| CN201920342781.0U Active CN210031085U (en) | 2019-03-18 | 2019-03-18 | Sewing machine and lift presser foot thread loosening mechanism |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111793910A (en) * | 2020-07-14 | 2020-10-20 | 杰克缝纫机股份有限公司 | Sewing machine and presser foot lifting and upper thread tension adjusting mechanism thereof |
| WO2021227260A1 (en) * | 2020-05-15 | 2021-11-18 | 杰克缝纫机股份有限公司 | Sewing machine integrating presser foot lifting and thread tension adjustment |
| CN113668146A (en) * | 2020-05-15 | 2021-11-19 | 杰克缝纫机股份有限公司 | Sewing machine |
-
2019
- 2019-03-18 CN CN201920342781.0U patent/CN210031085U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021227260A1 (en) * | 2020-05-15 | 2021-11-18 | 杰克缝纫机股份有限公司 | Sewing machine integrating presser foot lifting and thread tension adjustment |
| CN113668147A (en) * | 2020-05-15 | 2021-11-19 | 杰克缝纫机股份有限公司 | Sewing machine integrating presser foot lifting and thread tension adjusting |
| CN113668146A (en) * | 2020-05-15 | 2021-11-19 | 杰克缝纫机股份有限公司 | Sewing machine |
| CN113668146B (en) * | 2020-05-15 | 2022-08-02 | 杰克科技股份有限公司 | Sewing machine |
| CN111793910A (en) * | 2020-07-14 | 2020-10-20 | 杰克缝纫机股份有限公司 | Sewing machine and presser foot lifting and upper thread tension adjusting mechanism thereof |
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