CN220907836U - Single-rod type presser foot driving structure of sewing machine - Google Patents
Single-rod type presser foot driving structure of sewing machine Download PDFInfo
- Publication number
- CN220907836U CN220907836U CN202322543925.8U CN202322543925U CN220907836U CN 220907836 U CN220907836 U CN 220907836U CN 202322543925 U CN202322543925 U CN 202322543925U CN 220907836 U CN220907836 U CN 220907836U
- Authority
- CN
- China
- Prior art keywords
- crank
- sewing machine
- presser foot
- connecting rod
- straight rod
- 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.)
- Active
Links
- 238000009958 sewing Methods 0.000 title claims abstract description 56
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 238000005452 bending Methods 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 description 6
- 238000010008 shearing Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
The application relates to a single-rod type presser foot driving structure of a sewing machine, which comprises a mounting seat, a transmission crank shaft connected with the mounting seat, a first connecting rod, a cam crank connected with a main shaft of the sewing machine, a second connecting rod connected with a presser bar foot, and an extension crank, wherein two ends of the first connecting rod respectively rotate on the transmission crank shaft and the cam crank, one end of the second connecting rod rotates on the transmission crank shaft, the other end of the second connecting rod is connected with a presser foot, one end of the extension crank rotates on the cam crank, and the other end of the extension crank extends to the outer side of a machine body of the sewing machine and is connected with an output shaft of a motor. The cooperation of extension crank and first connecting rod is mainly used for transmitting the power of the motor that is located the organism outside to the transmission crank axle, and the rotation of control transmission crank axle, and then the removal of control presser foot because the motor is located the organism outside of sewing machine, and such well presser foot structure can be suitable for in the sewing machine of organism small.
Description
Technical Field
The utility model relates to the field of sewing machines, in particular to a single-rod type presser foot driving structure of a sewing machine.
Background
A sewing machine is a machine that interweaves or sews one or more layers of stitching material by forming one or more stitches on the stitching material with one or more stitching threads. The presser foot is one of important components of the sewing machine and is used for abutting the sewing material and assisting the sewing material in sewing operation.
The utility model patent with publication number CN212741752U discloses a middle presser foot structure of a sewing machine, which comprises a middle presser foot, a presser foot bar, a cam crank connected with a main shaft of the sewing machine, a transmission crank shaft connected with the cam crank, and a connecting rod group connected with the presser foot bar. The connecting rod group comprises a first connecting rod, one end of the first connecting rod is movably connected with the presser foot bar through a second connecting rod, the other end of the first connecting rod is rotationally connected with the lifting control crank shaft, a connecting hole is formed between two ends of the first connecting rod, and the connecting hole is rotationally connected with the transmission crank shaft through a third connecting rod; the sewing machine is provided with a motor for controlling the lifting and controlling the rotation angle of the crank shaft.
The related technical scheme has the following defects: the main shaft of the sewing machine is connected with the eccentric cam, the motor is arranged close to the eccentric cam, the motor can be seen to be arranged in the sewing machine body, and for some sewing machines with small machine body volumes, no space is reserved in the sewing machine body, so that the middle presser foot structure cannot be applied to the sewing machine with small machine body volumes.
Disclosure of utility model
The application provides a single-rod type presser foot driving structure of a sewing machine, which is suitable for the sewing machine with small machine body size.
The application provides a single-rod presser foot driving structure of a sewing machine, which adopts the following technical scheme:
the utility model provides a single pole formula presser foot actuating structure of sewing machine, includes the mount pad, with the transmission crank axle of mount pad connection, first connecting rod, with the cam crank of sewing machine spindle connection and with the second connecting rod of depression bar foot connection, still including extending the crank, the both ends of first connecting rod rotate respectively on transmission crank axle and cam crank, the one end of second connecting rod rotates on the transmission crank axle, the other end of second connecting rod is used for being connected with the presser foot, extend the one end rotation of crank on cam crank, extend the other end of crank and stretch to the organism outside of sewing machine and be used for with the output shaft of motor.
Through adopting above-mentioned technical scheme, extend the cooperation of crank and first connecting rod mainly be used for on the power transmission to the transmission crank axle that is located the motor in organism outside, control the rotation of transmission crank axle, then control the removal of presser foot, because the motor is located the organism outside of sewing machine, such well presser foot structure can be suitable for in the sewing machine of organism small.
Preferably, the transmission crank shaft comprises a first straight rod, a first crank part and a second crank part, wherein the first crank part and the second crank part are detachably connected to two ends of the first straight rod, the cam crank comprises a sleeve ring, an eccentric cam which rotates in the sleeve ring and is connected with a main shaft of the sewing machine, and a third crank part which is detachably connected to the sleeve ring, the first crank part is rotationally connected with the second connecting rod, and two ends of the first connecting rod are rotationally connected with the second crank part and the third crank part respectively.
Through adopting above-mentioned technical scheme, the sewing machine main shaft wears to establish in the mounting hole of eccentric cam, and when sewing machine main shaft rotated, through eccentric cam and telescopic cooperation drive third crank portion swing, the swing of third crank portion is passed through transmission crankshaft and second connecting rod, converts the up-and-down motion of presser foot.
Preferably, the extension crank comprises a second straight rod and a fourth crank part detachably connected to one end of the second straight rod, one end of the second straight rod far away from the fourth crank part rotates on the third crank part, and the fourth crank part is used for being connected with an output shaft of the motor.
Through adopting above-mentioned technical scheme, when the output shaft of motor rotates, drive extension crank swings, and extension crank's swing passes through cam crank, first connecting rod, transmission crank axle, second connecting rod transmission, converts the up-and-down motion of presser foot.
Preferably, the middle part of the second straight rod is bent, and the bending angle of the second straight rod is an obtuse angle.
Preferably, a plurality of lightening holes are sequentially formed in the second straight rod along the length direction of the second straight rod.
By adopting the technical scheme, the production cost of the second straight rod can be saved, and the whole weight of the sewing machine can be reduced.
Preferably, the third crank part comprises a crank block and a fan ring matched with the lantern ring, the fan ring is fixed on the crank block and is used for being abutted on the outer wall of the lantern ring, and the fan ring is connected with the lantern ring through bolts.
Through adopting above-mentioned technical scheme, fan ring butt can further increase the area of contact of third curved handle portion and lantern ring on the lantern ring outer wall, improves the joint strength of third curved handle portion and lantern ring.
Preferably, a positioning strip is arranged on the side surface of one side of the fan ring, which faces the lantern ring, and a positioning groove for plugging the positioning strip is formed in the outer wall of the lantern ring.
Through adopting above-mentioned technical scheme, before not having locating strip and constant head tank, through the relative rotation between bolt spacing fan ring and the lantern ring, after having locating strip and constant head tank, the cooperation of locating strip and constant head tank can restrict the relative rotation between fan ring and the lantern ring to reduce the shearing force that the bolt received, improve the life of bolt.
The technical effects of the utility model are mainly as follows:
1. The utility model is provided with the extension crank, the cooperation of the extension crank and the first connecting rod is mainly used for transmitting the power of the motor positioned at the outer side of the machine body to the transmission crank shaft to control the rotation of the transmission crank shaft and then control the movement of the presser foot, and the motor is positioned at the outer side of the machine body of the sewing machine, so that the middle presser foot structure can be suitable for the sewing machine with small machine body volume;
2. According to the utility model, the weight reducing holes are formed in the second straight rod, so that the production cost of the second straight rod can be saved, and the whole weight of the sewing machine can be reduced;
3. According to the utility model, the positioning strips and the positioning grooves are arranged, and the positioning strips and the positioning grooves are matched to limit the relative rotation between the fan ring and the lantern ring, so that the shearing force applied to the bolt is reduced, and the service life of the bolt is prolonged.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present application.
Fig. 2 is a schematic view of the overall structure of another angle according to the embodiment of the present application.
Fig. 3 is an enlarged view taken along a in fig. 1.
Fig. 4 is an enlarged view taken at B in fig. 2.
Fig. 5 is a schematic view of the structure of a cam crank according to an embodiment of the present application.
Reference numerals illustrate: 1. a first link; 2. an extension crank; 21. a second straight rod; 211. a lightening hole; 22. a fourth curved handle portion; 221. a crank body; 222. a through hole; 223. a deformation groove; 224. a deformation section; 3. a mounting base; 4. a transmission crankshaft; 41. a first straight rod; 42. a first curved handle portion; 43. a second curved handle portion; 5. cam crank; 51. a collar; 511. a positioning groove; 52. an eccentric cam; 53. a third curved handle portion; 531. a crank block; 532. a fan ring; 533. a positioning strip; 6. a second link; 61. and a fifth crank part.
Detailed Description
The present application will be further described in detail below with reference to fig. 1-5, so that the technical solution of the present application can be more easily understood and mastered.
The embodiment of the application discloses a single-rod type presser foot driving structure of a sewing machine.
Referring to fig. 1 to 5, a single-bar presser foot driving structure of a sewing machine of this embodiment includes a first link 1, an extension crank 2, a mount 3, a transmission crank shaft 4 connected to the mount 3, a cam crank 5 connected to a main shaft of the sewing machine, and a second link 6 connected to a presser bar foot. The mounting base 3 is fixed in the sewing machine body by connecting pieces such as bolts, screws and the like.
Referring to fig. 1 to 5, both ends of the first link 1 are respectively rotated on the driving crank shaft 4 and the cam crank 5, one end of the second link 6 is rotated on the driving crank shaft 4, the other end of the second link 6 is used for being connected with the presser foot, one end of the extension crank 2 is rotated on the cam crank 5, and the other end of the extension crank 2 extends to the outside of the body of the sewing machine and is used for being connected with an output shaft of the motor.
Referring to fig. 1 to 5, the cooperation of the extension crank 2 and the first link 1 is mainly used for transmitting the power of a motor located at the outer side of the machine body to the transmission crank shaft 4 to control the rotation of the transmission crank shaft 4, and then control the movement of the presser foot.
Referring to fig. 1 to 5, the driving crank shaft 4 includes a first straight rod 41, a first crank part 42 and a second crank part 43 detachably connected to both ends of the first straight rod 41, the first straight rod 41 is penetrated and rotated on the mounting base 3, the cam crank 5 includes a collar 51, an eccentric cam 52 rotated in the collar 51 to be connected with a main shaft of the sewing machine, and a third crank part 53 detachably connected to the collar 51, the first crank part 42 is rotatably connected with the second connecting rod 6, and both ends of the first connecting rod 1 are rotatably connected with the second crank part 43 and the third crank part 53, respectively.
Referring to fig. 1 to 5, the main shaft of the sewing machine is inserted into the mounting hole of the eccentric cam 52, and when the main shaft of the sewing machine rotates, the third crank part 53 is driven to swing by the cooperation of the eccentric cam 52 and the sleeve, and the swing of the third crank part 53 is transmitted through the transmission crank shaft 4 and the second connecting rod 6 and is converted into the up-and-down motion of the presser foot.
Referring to fig. 1 to 5, the extension crank 2 includes a second straight bar 21 and a fourth crank part 22 detachably connected to one end of the second straight bar 21, one end of the second straight bar 21 remote from the fourth crank part 22 is rotated on a third crank part 53, and the fourth crank part 22 is used for connecting with an output shaft of a motor.
Referring to fig. 1 to 5, when the output shaft of the motor rotates, the extension crank 2 is driven to swing, and the swing of the extension crank 2 is transmitted through the cam crank 5, the first connecting rod 1, the transmission crank shaft 4 and the second connecting rod 6 and is converted into the up-and-down motion of the presser foot.
Referring to fig. 1 to 5, the end of the second link 6 remote from the first crank part 42 is pivoted with a fifth crank part 61, and the fifth crank part 61 is used for connecting with a presser foot.
Referring to fig. 1-5, the first crank part 42, the second crank part 43, the fourth crank part 22 and the fifth crank part 61 are similar in structure, each of which comprises a crank body 221, through holes 222 are formed in the crank body 221, wherein the through holes 222 in the first crank part 42 and the second crank part 43 are matched with the first straight rod 41 and are used for the first straight rod 41 to pass through, the through holes 222 in the fourth crank part 22 are matched with an output shaft of a motor and are used for the output shaft of a power supply to pass through, and the through holes 222 in the fifth crank part 61 are matched with corresponding connecting structures on the presser foot. The deformation groove 223 is formed in the inner wall of the through hole 222 in a penetrating mode, the parts, which are opposite to the deformation groove 223 and located on two sides of the deformation groove 223, of the crank body 221 are two deformation parts 224, and the two deformation parts 224 are connected with each other through bolts. By screwing the bolt, the first straight rod 41 or the output shaft of the motor, or the connection structure on the presser foot is clamped by reducing the distance between the two deformed portions 224 and the aperture of the first through hole 222.
Referring to fig. 1 to 5, the middle portion of the second straight rod 21 is bent, and the bent angle of the second straight rod 21 is an obtuse angle, and the angle is 160 ° -180 °. The second straight rod 21 is sequentially provided with a plurality of weight reducing holes 211 along the length direction of the second straight rod 21. The production cost of the second straight bar 21 can be saved, and the whole weight of the sewing machine can be reduced.
Referring to fig. 1-5, the third crank part 53 includes a crank block 531 and a fan ring 532 cooperating with the collar 51, the fan ring 532 is fixed on the crank block 531, the fan ring 532 is used to abut against the outer wall of the collar 51, the fan ring 532 is connected with the collar 51 through two bolts, and one end of each bolt passes through the fan ring 532 and is connected with the collar 51 through a thread. The fan ring 532 is abutted against the outer wall of the collar 51, so that the contact area between the third crank part 53 and the collar 51 can be further increased, and the connection strength between the third crank part 53 and the collar 51 can be improved.
Referring to fig. 1-5, a positioning strip 533 is fixed to a side surface of the fan ring 532 facing the collar 51, a length direction of the positioning strip 533 is parallel to an axial direction of the fan ring 532, and a positioning groove 511 for inserting the positioning strip 533 is formed in an outer wall of the collar 51.
Referring to fig. 1-5, before the positioning strip 533 and the positioning groove 511 are not provided, the bolt is limited to rotate relative to the fan ring 532 and the collar 51, and after the positioning strip 533 and the positioning groove 511 are provided, the positioning strip 533 and the positioning groove 511 cooperate to limit the relative rotation between the fan ring 532 and the collar 51, so that the shearing force applied to the bolt is reduced, and the service life of the bolt is prolonged.
Referring to fig. 1 to 5, the rotation axis directions of all the components are parallel to each other, and the rotation axes of the first link 1 and the second straight bar 21 on the crank block 531 are not coaxially arranged.
Of course, the above is only a typical example of the application, and other embodiments of the application are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the application claimed.
Claims (7)
1. The utility model provides a single pole formula presser foot drive structure of sewing machine, includes mount pad (3), drive crankshaft (4) that are connected with mount pad (3), first connecting rod (1), cam crank (5) that are connected with the sewing machine main shaft and second connecting rod (6) that are connected with the depression bar foot, its characterized in that: still including extending crank (2), the both ends of first connecting rod (1) rotate respectively on drive crank axle (4) and cam crank (5), the one end of second connecting rod (6) rotates on drive crank axle (4), the other end of second connecting rod (6) is used for being connected with the presser foot, the one end of extending crank (2) rotates on cam crank (5), the other end of extending crank (2) stretches to the organism outside of sewing machine and is used for with the output shaft of motor.
2. The single bar presser foot driving structure of a sewing machine according to claim 1, wherein: the transmission crank shaft (4) comprises a first straight rod (41), a first crank part (42) and a second crank part (43) which are detachably connected to two ends of the first straight rod (41), the cam crank (5) comprises a sleeve ring (51), an eccentric cam (52) which rotates in the sleeve ring (51) and is connected with a main shaft of the sewing machine, and a third crank part (53) which is detachably connected to the sleeve ring (51), the first crank part (42) is rotationally connected with a second connecting rod (6), and two ends of the first connecting rod (1) are rotationally connected with the second crank part (43) and the third crank part (53) respectively.
3. The single bar presser foot driving structure of a sewing machine according to claim 1, wherein: the extension crank (2) comprises a second straight rod (21) and a fourth crank part (22) detachably connected to one end of the second straight rod (21), one end, far away from the fourth crank part (22), of the second straight rod (21) rotates on a third crank part (53), and the fourth crank part (22) is used for being connected with an output shaft of a motor.
4. A single-bar presser foot driving structure of a sewing machine as claimed in claim 3, wherein: the middle part of the second straight rod (21) is bent, and the bending angle of the second straight rod (21) is an obtuse angle.
5. A single-bar presser foot driving structure of a sewing machine as claimed in claim 3, wherein: and a plurality of lightening holes (211) are sequentially formed in the second straight rod (21) along the length direction of the second straight rod (21).
6. The single bar presser foot driving structure of a sewing machine according to claim 2, wherein: the third crank part (53) comprises a crank block (531) and a fan ring (532) matched with the lantern ring (51), the fan ring (532) is fixed on the crank block (531), the fan ring (532) is used for being abutted on the outer wall of the lantern ring (51), and the fan ring (532) is connected with the lantern ring (51) through bolts.
7. The single bar presser foot driving structure of a sewing machine of claim 6, wherein: the fan ring (532) is provided with a locating strip (533) towards one side surface of the lantern ring (51), and a locating groove (511) for plugging the locating strip (533) is formed in the outer wall of the lantern ring (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322543925.8U CN220907836U (en) | 2023-09-18 | 2023-09-18 | Single-rod type presser foot driving structure of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322543925.8U CN220907836U (en) | 2023-09-18 | 2023-09-18 | Single-rod type presser foot driving structure of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220907836U true CN220907836U (en) | 2024-05-07 |
Family
ID=90903760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322543925.8U Active CN220907836U (en) | 2023-09-18 | 2023-09-18 | Single-rod type presser foot driving structure of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220907836U (en) |
-
2023
- 2023-09-18 CN CN202322543925.8U patent/CN220907836U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2007076521B1 (en) | Hybrid nutating pump | |
| CN103114390B (en) | Sewing machine with adjustable needle rod and take-up stroke | |
| CN101634085B (en) | Differential mechanism of motor-direct-drive type lower differential sewing machine | |
| CN220907836U (en) | Single-rod type presser foot driving structure of sewing machine | |
| CN201236268Y (en) | Motor direct drive type under differential sewing machine | |
| CN216688606U (en) | Lower machine head of sewing machine | |
| CN220977327U (en) | Double-rod type presser foot driving structure of sewing machine | |
| CN210621138U (en) | Draw crochet hook drive mechanism of group machine | |
| CN210151359U (en) | Sewing machine's gauge needle adjusts structure | |
| CN217078001U (en) | Automatic presser foot lifting and backward and forward sewing mechanism of sewing machine | |
| CN2194372Y (en) | Chain thread curved needle gearing mechanism for medium speed sewing machine | |
| CN209619638U (en) | A kind of sewing machine and its mechanism is backstitched automatically | |
| CN209243333U (en) | A kind of sewing machine | |
| CN218989590U (en) | Driving mechanism for lifting presser foot of flat seaming machine | |
| CN215517904U (en) | Motor transmission mechanism of sewing machine | |
| CN213507497U (en) | Needle pitch adjusting mechanism | |
| CN101275349B (en) | Looper driving mechanism for multi-head coiling embroidery computer controlled embroidery machine | |
| CN219059351U (en) | Cam driving structure | |
| CN214115912U (en) | Needle bar assembly and sewing machine | |
| CN2201192Y (en) | Reinforcing bar cutting and bending machine | |
| CN110093727A (en) | Improved herringbone line industrial sewing machine | |
| CN201024302Y (en) | Coiled band embroidery computerized embroidery machine ring-beating drive device | |
| CN209975102U (en) | Cutter mechanism of flat car sewing machine with cutter | |
| CN220352360U (en) | Multi-track feeding mechanism of sewing machine and sewing machine with same | |
| CN217839369U (en) | Embroidery machine presser foot drive arrangement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |