CN216738803U - Presser foot lifting driving structure of sewing machine - Google Patents
Presser foot lifting driving structure of sewing machine Download PDFInfo
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- CN216738803U CN216738803U CN202122998894.6U CN202122998894U CN216738803U CN 216738803 U CN216738803 U CN 216738803U CN 202122998894 U CN202122998894 U CN 202122998894U CN 216738803 U CN216738803 U CN 216738803U
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- lever
- presser foot
- foot lifting
- pull rod
- sewing machine
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Abstract
The utility model provides a sewing machine lift presser foot drive structure belongs to mechanical technical field. The presser foot lifting driving structure of the sewing machine comprises a push rod and a mechanical lever, wherein the middle part of the mechanical lever is hinged to a machine shell of the sewing machine, the top end of the push rod is connected to one end of the mechanical lever, the rear end of a first pull rod is connected to the presser foot lifting lever, the front end of the first pull rod and the rear end of a second pull rod are connected to the other end of the mechanical lever together, the front end of the second pull rod is connected to a front lever, and the front lever is connected to a press rod. The electronic control lifting of the presser foot can be achieved through the stepping motor, and meanwhile, the mechanical control lifting of the presser foot can be achieved through the ejector rod, so that frequent use of the stepping motor is reduced, and the service life is prolonged.
Description
Technical Field
The utility model belongs to the technical field of sewing machine, a sewing machine is related to, in particular to sewing machine lifts presser foot drive structure.
Background
At present, in the use process of a sewing machine, a presser foot needs to be lifted and the stitch length needs to be adjusted, and in the existing structure, as shown in Chinese patents (patent application number: CN202020963419.8 discloses a sewing machine, which comprises a presser foot component, a stepping motor and a swing seat for adjusting the needle pitch, wherein the stepping motor is used for driving the presser foot component to complete the lifting action and driving the swing seat to complete the rotating swing action, the stepping motor is connected with a presser foot lifting cam, the presser foot lifting cam comprises a needle pitch stroke surface and a presser foot lifting stroke surface, the presser foot component comprises a presser foot lifting lever, a pressure lever and a presser foot, the presser foot is connected to the bottom end of the pressure lever, one end of the presser foot lifting lever is connected with the pressure lever through a linkage mechanism, and the other end of the presser foot lifting lever is used for being matched with the presser foot lifting stroke surface. The needle pitch and the presser foot lifting height of the sewing machine are more controllable. The sewing machine is operated by lifting the presser foot only through the pull rod by the motor, and in all working processes, the presser foot lifting operation can only be controlled through the motor, so that the motor is frequently used and is easy to break down.
Disclosure of Invention
The utility model aims at solving the problems in the prior art, and provides a presser foot lifting driving structure of a sewing machine.
The purpose of the utility model can be realized by the following technical proposal: a presser foot lifting driving structure of a sewing machine comprises a stepping motor and a presser foot lifting assembly, wherein a presser foot lifting cam is connected to the stepping motor, the presser foot lifting assembly comprises a presser foot lifting lever, a pressure rod and a presser foot, the presser foot is connected to the bottom end of the pressure rod, one end of the presser foot lifting lever is connected with the pressure rod through a linkage mechanism, the other end of the presser foot lifting lever is connected to the presser foot lifting cam, the presser foot lifting driving structure is characterized in that the linkage mechanism comprises a first pull rod, a second pull rod and a front lever, the presser foot lifting mechanical driving structure comprises a push rod and a mechanical lever, the middle of the mechanical lever is hinged to a machine shell of the sewing machine, the top end of the push rod is connected to one end of the mechanical lever, the rear end of the first pull rod is connected to the presser foot lifting lever, the front end of the first pull rod and the rear end of the second pull rod are connected to the other end of the mechanical lever together, and the front end of the second pull rod is connected to the front lever, the front lever is connected to the pressure lever.
In the presser foot lifting driving structure of the sewing machine, the mechanical lever includes a first lever part and a second lever part, the top rod is connected to the first lever part, and the first pull rod and the second pull rod are connected to the second lever part together.
In the presser foot lifting drive structure of the sewing machine, a connecting hole is formed in the lever part I, and the ejector rod is hung on the connecting hole.
In the presser foot lifting driving structure of the sewing machine, the lever bolt is inserted into the lever part II, and the front end of the pull rod I and the rear end of the pull rod II are sleeved on the lever bolt together.
In the presser foot lifting driving structure of the sewing machine, the pressure rod is fixedly connected with the pressure rod guide frame, the pressure rod guide frame is fixedly connected with the lifting plate, and the front lever is hinged on the lifting plate.
In the presser foot lifting driving structure of the sewing machine, the presser foot lifting cam is fixedly connected to an output shaft of the stepping motor, the presser foot lifting cam is positioned at one end close to the body of the stepping motor, the other end, far away from the body of the stepping motor, of the output shaft is fixedly connected with the needle pitch driving handle, and the needle pitch driving handle is connected with the swing seat through the needle pitch pull rod.
In the presser foot lifting and driving structure of the sewing machine, the stitch length driving handle is of an eccentric wheel structure, the output shaft is positioned in the center of the stitch length driving handle, and the stitch length pull rod is connected to the eccentric position of the stitch length driving handle.
Compared with the prior art, the utility model discloses not only can lift the electron of presser foot through step motor and control the lift, can also realize lifting the machinery of presser foot through the ejector pin simultaneously and control the lift to reduce step motor's frequent use, increase of service life.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of another angle of the present invention.
In the figure, 1, a stepping motor; 2. lifting a presser foot cam; 3. lifting a presser foot lever; 4. a pressure lever; 5. a presser foot; 6. a first pull rod; 7. a second pull rod; 8. a front lever; 9. a top rod; 10. A mechanical lever; 10a, a first lever part; 10b, a lever part II; 10c, connecting holes; 11. A lever bolt; 12. a compression bar guide frame; 13. a lifting plate; 14. a needle pitch drive handle; 15. A needle pitch pull rod; 16. a swing seat; 17. a first bolt; 18. and a second bolt.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Referring to fig. 1 and 2, the embodiment is a presser foot lifting driving structure of a sewing machine, the sewing machine includes a stepping motor 1 and a presser foot lifting assembly, the stepping motor 1 is connected with a presser foot lifting cam 2, the presser foot lifting assembly includes a presser foot lifting lever 3, a pressure bar 4 and a presser foot 5, the presser foot 5 is connected to the bottom end of the pressure bar 4, the upper end of the presser foot lifting lever 3 is connected to the pressure bar 4 through a linkage mechanism, the lower end of the presser foot lifting lever 3 is connected to the presser foot lifting cam 2, the linkage mechanism includes a first pull rod 6, a second pull rod 7 and a front lever 8, the presser foot lifting mechanical driving structure includes a top rod 9 and a mechanical lever 10, the middle part of the mechanical lever 10 is hinged to a machine shell of the sewing machine, the top end of the top rod 9 is connected to one end of the mechanical lever 10, the rear end of the first pull rod 6 is connected to the presser foot lifting lever 3, the front end of the first pull rod 6 and the rear end of the second pull rod 7 are connected to the other end of the mechanical lever 10, the front end of the second pull rod 7 is connected to a front lever 8, and the front lever 8 is connected to the pressure rod 4.
Further preferably, the mechanical lever 10 includes a lever portion one 10a and a lever portion two 10b, the push rod 9 is connected to the lever portion one 10a, and the pull rod one 6 and the pull rod two 7 are connected to the lever portion two 10b together.
Preferably, the lever part I10 a is provided with a connecting hole 10c, and the push rod 9 is hung on the connecting hole 10 c.
Preferably, a lever bolt 11 is inserted in the lever part II 10b, and the front end of the pull rod I6 and the rear end of the pull rod II 7 are sleeved on the lever bolt 11 together; the upper end of the presser foot lifting lever 3 is connected with a first bolt 17, and the rear end of the pull rod 6 is sleeved on the first bolt 17; the front lever 8 is connected with a second bolt 18, and the front end of the second pull rod 6 is sleeved on the second bolt 18.
Further preferably, the compression bar 4 is fixedly connected with a compression bar guide frame 12, the compression bar guide frame 12 is fixedly connected with a lifting plate 13, and the front lever 8 is hinged on the lifting plate 13.
Preferably, the presser foot lifting cam 2 is fixedly connected to an output shaft of the stepping motor 1, the presser foot lifting cam 2 is located at one end close to the body of the stepping motor 1, a needle pitch driving handle 14 is fixedly connected to the other end, which is located far away from the body of the stepping motor 1, of the output shaft 1a, and the needle pitch driving handle 14 is connected with the swing seat 16 through a needle pitch pull rod 15.
Further preferably, the pitch drive shaft 14 has an eccentric wheel structure, the output shaft 1a is located at the center of the pitch drive shaft 14, and the pitch pull rod 15 is connected to the eccentric position of the pitch drive shaft 14.
When the lifting mechanism works, the pressure foot lifting assembly can be driven by the stepping motor 1 to lift, and when the stepping motor 1 stops working, the mechanical lever 10 is driven to rotate by driving the ejector rod 9 to lift through the knee rest drive connected with the ejector rod 9, so that the first pull rod 6 and the second pull rod 7 are driven to be linked, and the mechanical control of lifting the pressure foot lifting assembly is realized.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. A presser foot lifting driving structure of a sewing machine comprises a stepping motor (1) and a presser foot lifting assembly, wherein a presser foot lifting cam (2) is connected to the stepping motor (1), the presser foot lifting assembly comprises a presser foot lifting lever (3), a pressing rod (4) and a presser foot (5), the presser foot (5) is connected to the bottom end of the pressing rod (4), one end of the presser foot lifting lever (3) is connected with the pressing rod (4) through a linkage mechanism, the other end of the presser foot lifting lever (3) is connected to the presser foot lifting cam (2), the presser foot lifting driving structure is characterized in that the linkage mechanism comprises a first pull rod (6), a second pull rod (7) and a front lever (8), the presser foot lifting mechanical driving structure comprises a push rod (9) and a mechanical lever (10), the middle part of the mechanical lever (10) is hinged to a machine shell of the sewing machine, the top end of the push rod (9) is connected to one end of the mechanical lever (10), the rear end of the first pull rod (6) is connected to the presser foot lifting lever (3), the front end of the first pull rod (6) and the rear end of the second pull rod (7) are connected to the other end of the mechanical lever (10) together, the front end of the second pull rod (7) is connected to the front lever (8), and the front lever (8) is connected to the pressing rod (4).
2. The presser foot lifting drive structure of a sewing machine according to claim 1, wherein said mechanical lever (10) includes a first lever portion (10a) and a second lever portion (10b), said presser bar (9) is attached to the first lever portion (10a), and said first pull rod (6) and said second pull rod (7) are commonly attached to the second lever portion (10 b).
3. The presser foot lifting and driving structure of a sewing machine according to claim 2, wherein the lever portion one (10a) is provided with a connecting hole (10c), and the presser bar (9) is hung on the connecting hole (10 c).
4. The presser foot lifting and driving structure of a sewing machine according to claim 2, wherein a lever bolt (11) is inserted into the second lever portion (10b), and the front end of the first pull rod (6) and the rear end of the second pull rod (7) are jointly fitted over the lever bolt (11).
5. The presser foot lifting and driving structure of sewing machine according to claim 1, 2, 3 or 4, wherein the presser bar (4) is fixedly connected with a presser bar guide (12), the presser bar guide (12) is fixedly connected with a lifting plate (13), and the front lever (8) is hinged on the lifting plate (13).
6. The presser foot lifting drive structure of sewing machine according to claim 1 or 2 or 3 or 4, characterized in that the presser foot lifting cam (2) is fixedly connected to the output shaft of the stepping motor (1), and the presser foot lifting cam (2) is located at one end close to the body of the stepping motor (1), and a needle pitch drive handle (14) is fixedly connected to the other end of the output shaft (1a) located far away from the body of the stepping motor (1), and the needle pitch drive handle (14) is connected to the swing seat (16) through a needle pitch pull rod (15).
7. The presser foot lifting drive structure of a sewing machine according to claim 6, wherein said pitch drive lever (14) is an eccentric wheel structure, said output shaft (1a) is located at the center of the pitch drive lever (14), and said pitch pull rod (15) is connected to an eccentric position of the pitch drive lever (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122998894.6U CN216738803U (en) | 2021-11-30 | 2021-11-30 | Presser foot lifting driving structure of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122998894.6U CN216738803U (en) | 2021-11-30 | 2021-11-30 | Presser foot lifting driving structure of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216738803U true CN216738803U (en) | 2022-06-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122998894.6U Active CN216738803U (en) | 2021-11-30 | 2021-11-30 | Presser foot lifting driving structure of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216738803U (en) |
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2021
- 2021-11-30 CN CN202122998894.6U patent/CN216738803U/en active Active
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