CN220927128U - Presser foot lifting driving mechanism of sewing machine - Google Patents
Presser foot lifting driving mechanism of sewing machine Download PDFInfo
- Publication number
- CN220927128U CN220927128U CN202322571121.9U CN202322571121U CN220927128U CN 220927128 U CN220927128 U CN 220927128U CN 202322571121 U CN202322571121 U CN 202322571121U CN 220927128 U CN220927128 U CN 220927128U
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- motor
- lever
- presser foot
- sewing machine
- cam
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- 238000009958 sewing Methods 0.000 title claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 238000005096 rolling process Methods 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 239000004744 fabric Substances 0.000 description 5
- 238000010073 coating (rubber) Methods 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- Sewing Machines And Sewing (AREA)
Abstract
The utility model provides a presser foot lifting driving mechanism of a sewing machine, which comprises a machine body, a lever, a motor and a connecting rod, wherein an output shaft of the motor is connected with a cam; one end of the lever is rotationally connected with the machine body, a fixed shaft is arranged on the lever, a rolling body is arranged on the fixed shaft, and the rolling body is contacted with the contour surface of the cam; a reset spring is arranged between the lever and the machine body; one end of the connecting rod is connected with the lever, and the other end of the connecting rod is connected with the presser foot through the transmission mechanism; the motor is electrically connected with the motor controller. Compared with an electromagnet, the motor has the advantage of low noise during operation, and can effectively reduce the noise during operation of the sewing machine; and the motor can be flexibly controlled by the motor controller, and the rotation angle range of the cam can be adjusted by adjusting the setting parameters of the motor controller, so that the adjustment of the up-and-down movement stroke of the presser foot is realized, and the adjustment is relatively simple and convenient.
Description
Technical Field
The utility model relates to the technical field of sewing machines, in particular to a presser foot lifting driving mechanism of a sewing machine.
Background
The presser foot is used as a part of a sewing machine and plays an important auxiliary role in the sewing process, and the presser foot is used for applying pressure to the cloth to enable the cloth to be closely attached to the bottom of a sewing opening so as to keep the cloth stable during sewing, and meanwhile, the presser foot can guide the cloth to a correct position to ensure that a sewing thread is sewn in a preset area, and the guiding ensures the correct alignment of the sewing thread and the cloth and reduces the sewing errors.
The presser foot can continuously move up and down in the sewing process; unlike the conventional pedal driving mode of the pedal sewing machine, the existing electric sewing machine has the following problems that the presser foot is driven to move up and down rapidly by the movement of the electromagnet and the transmission of the connecting rod, and the existing driving mode has the following problems: 1. when the electromagnet drives the presser foot to move up and down quickly, the armature or the movable rod in the electromagnet can move back and forth quickly and generate larger impact sound, so that larger running noise is formed; 2. the traditional driving mode is difficult to flexibly adjust the stroke of the up-and-down movement of the presser foot according to actual needs.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides a presser foot lifting driving mechanism of a sewing machine.
The utility model aims at realizing the following technical scheme: the presser foot lifting driving mechanism of the sewing machine comprises a machine body, a lever, a motor and a connecting rod, wherein an output shaft of the motor is connected with a cam; one end of the lever is rotationally connected with the machine body, a fixed shaft is arranged on the lever, a rolling body is arranged on the fixed shaft, and the rolling body is contacted with the contour surface of the cam;
a reset spring is arranged between the lever and the machine body; one end of the connecting rod is connected with the lever, and the other end of the connecting rod is connected with the presser foot through the transmission mechanism;
the motor is electrically connected with the motor controller.
Preferably, the motor is a stepper motor.
Preferably, the lever is provided with a first spring screw, the machine body is provided with a second spring screw, and two ends of the return spring are respectively connected with the first spring screw and the second spring screw.
Preferably, the rolling element is a bearing, an inner ring of the bearing is sleeved on the fixed shaft, and an outer ring of the bearing is contacted with the profile surface of the cam.
Preferably, an outer side of the outer ring of the bearing is provided with a rubber coating layer.
Preferably, the machine body is provided with a rotating support shaft, and one end of the lever is rotatably connected to the rotating support shaft.
Preferably, the cam is provided with a shaft hole, and an output shaft of the motor is connected in the shaft hole.
Preferably, the transmission mechanism comprises a rotating shaft and a transmission rod which are rotatably connected to the machine body, a first transmission arm and a second transmission arm are arranged on the rotating shaft, the first transmission arm is connected with one end, far away from the lever, of the connecting rod, one end of the transmission rod is connected with the second transmission arm, and the other end of the transmission rod is connected with the presser foot.
The beneficial effects of the utility model are as follows: compared with an electromagnet, the motor has the advantage of low noise during operation, and can effectively reduce the noise during operation of the sewing machine; and the motor can be flexibly controlled by the motor controller, and the rotation angle range of the cam can be adjusted by adjusting the setting parameters of the motor controller, so that the adjustment of the up-and-down movement stroke of the presser foot is realized, and the adjustment is relatively simple and convenient.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is an exploded view of the present utility model.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is a schematic view of the structure of the cam.
In the figure: 1. the machine comprises a machine body, 2, a motor, 3, a cam, 4, a lever, 5, a rotating support shaft, 6, a first spring screw, 7, a second spring screw, 8, a return spring, 9, a connecting rod, 11, a rotating shaft, 12, a first transmission arm, 13, a second transmission arm, 14, a transmission rod, 15, a fixed shaft, 16, a rolling body, 17, a shaft hole, 19, a locking screw, 20 and a profile surface.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the utility model, fall within the scope of protection of the utility model.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.
It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.
1-4, The presser foot lifting driving mechanism of the sewing machine comprises a machine body 1, a lever 4, a motor 2 and a connecting rod 9, wherein an output shaft of the motor 2 is connected with a cam 3. Wherein, the cam 3 is provided with a shaft hole 17, and the output shaft of the motor 2 is connected in the shaft hole 17; the cam 3 is also connected with a locking screw 19, and the cam 3 is locked and fixed on the output shaft of the motor 2 through the locking screw 19.
The motor 2 is electrically connected with a motor 2 controller. In the utility model, the motor 2 is a stepping motor 2, and the output shaft of the motor 2 is controlled by the motor 2 controller to rotate back and forth in a certain angle range, so as to drive the cam 3 to rotate back and forth in a certain angle range. The rotation angle range of the motor 2 can be adjusted by adjusting the control parameters of the controller of the motor 2.
One end of the lever 4 is rotatably connected with the machine body 1. Wherein, the machine body 1 is provided with a rotating support shaft 5, one end of the lever 4 is rotatably connected to the rotating support shaft 5, and one end of the lever 4 can rotate around the rotating support shaft 5. The lever 4 is provided with a fixed shaft 15, the fixed shaft 15 is provided with rolling bodies 16, and the rolling bodies 16 are contacted with a contour surface 20 of the cam 3. In the utility model, the rolling element 16 is a bearing, the inner ring of the bearing is sleeved on the fixed shaft 15, and the outer ring of the bearing is contacted with the contour surface 20 of the cam 3. The outer side of the outer ring of the bearing is provided with a rubber coating layer. The rubber coating layer is made of rubber, so that noise generated by contact between the rolling bodies 16 and the cam 3 can be eliminated or reduced.
A return spring 8 is arranged between the lever 4 and the machine body 1. The lever 4 is provided with a first spring screw 6, the machine body 1 is provided with a second spring screw 7, and two ends of the return spring 8 are respectively connected with the first spring screw 6 and the second spring screw 7. The rolling bodies 16 on the lever 4 are held in close contact with the contour surface 20 of the cam 3 by the return spring 8.
One end of a connecting rod 9 is connected with the lever 4, the connecting rod 9 is rotationally connected with the lever 4, and the other end of the connecting rod 9 is connected with the presser foot through a transmission mechanism. Specifically, the transmission mechanism comprises a rotating shaft 11 and a transmission rod 14 which are rotatably connected to the machine body 1, a first transmission arm 12 and a second transmission arm 13 are arranged on the rotating shaft 11, the first transmission arm 12 is connected with one end of the connecting rod 9 far away from the lever 4, and the first transmission arm 12 and the connecting rod 9 are rotatably connected; one end of the transmission rod 14 is connected with the second transmission arm 13, the transmission rod 14 is rotationally connected with the second transmission arm 13, and the other end of the transmission rod 14 is connected with the presser foot.
In the utility model, the motor 2 drives the cam 3 to reciprocate within a certain angle range, and the contact between the cam 3 and the rolling body 16 drives the lever 4 to swing within a certain angle range, and the presser foot is driven to move under the transmission action of the connecting rod 9 and the transmission mechanism in the swinging process of the lever 4. Compared with an electromagnet, the motor 2 has the advantage of low noise during operation, and can effectively reduce the noise during operation of the sewing machine; and the motor 2 can be flexibly controlled by a motor 2 controller, and the rotating angle range of the cam 3 can be adjusted by adjusting the setting parameters of the motor 2 controller, so that the adjustment of the up-and-down moving stroke of the presser foot is realized, and the adjustment is relatively simple and convenient.
The present utility model is not limited to the above-mentioned preferred embodiments, and any person who can obtain other various products under the teaching of the present utility model can make any changes in shape or structure, and all the technical solutions that are the same or similar to the present utility model fall within the scope of the present utility model.
Claims (8)
1. The presser foot lifting driving mechanism of the sewing machine comprises a machine body and is characterized by also comprising a lever, a motor and a connecting rod, wherein an output shaft of the motor is connected with a cam; one end of the lever is rotationally connected with the machine body, a fixed shaft is arranged on the lever, a rolling body is arranged on the fixed shaft, and the rolling body is contacted with the contour surface of the cam;
a reset spring is arranged between the lever and the machine body; one end of the connecting rod is connected with the lever, and the other end of the connecting rod is connected with the presser foot through the transmission mechanism;
the motor is electrically connected with the motor controller.
2. The presser foot lift drive mechanism of claim 1, wherein said motor is a stepper motor.
3. The presser foot lifting driving mechanism of the sewing machine according to claim 1, wherein the lever is provided with a first spring screw, the machine body is provided with a second spring screw, and two ends of the return spring are respectively connected with the first spring screw and the second spring screw.
4. The presser foot lifting driving mechanism of a sewing machine according to claim 1, wherein the rolling element is a bearing, an inner ring of the bearing is sleeved on the fixed shaft, and an outer ring of the bearing is in contact with a contour surface of the cam.
5. The presser foot lifting drive mechanism of a sewing machine of claim 4, wherein an outer side of an outer race of the bearing is provided with a glue coating.
6. The presser foot lifting drive mechanism for a sewing machine of any one of claims 1 to 5, wherein a rotating fulcrum is provided on the machine body, and one end of the lever is rotatably connected to the rotating fulcrum.
7. The presser foot lifting drive mechanism for a sewing machine of any one of claims 1 to 5, wherein the cam is provided with a shaft hole, and an output shaft of the motor is connected to the shaft hole.
8. The presser foot lifting driving mechanism of a sewing machine according to any one of claims 1 to 5, wherein the driving mechanism comprises a rotating shaft and a driving rod which are rotatably connected to the machine body, a first driving arm and a second driving arm are arranged on the rotating shaft, the first driving arm is connected with one end of the connecting rod far away from the lever, one end of the driving rod is connected with the second driving arm, and the other end of the driving rod is connected with the presser foot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322571121.9U CN220927128U (en) | 2023-09-21 | 2023-09-21 | Presser foot lifting driving mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322571121.9U CN220927128U (en) | 2023-09-21 | 2023-09-21 | Presser foot lifting driving mechanism of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220927128U true CN220927128U (en) | 2024-05-10 |
Family
ID=90967151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322571121.9U Active CN220927128U (en) | 2023-09-21 | 2023-09-21 | Presser foot lifting driving mechanism of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220927128U (en) |
-
2023
- 2023-09-21 CN CN202322571121.9U patent/CN220927128U/en active Active
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