CN220376896U

CN220376896U - Presser foot driving mechanism of sewing machine

Info

Publication number: CN220376896U
Application number: CN202321796898.9U
Authority: CN
Inventors: 王泽坤; 王帅杰; 张延豪
Original assignee: Zhejiang Anqi Intelligent Technology Co ltd
Current assignee: Zhejiang Anqi Intelligent Technology Co ltd
Priority date: 2023-07-10
Filing date: 2023-07-10
Publication date: 2024-01-23
Anticipated expiration: 2033-07-10

Abstract

The utility model relates to a sewing machine technical field especially relates to a sewing machine's presser foot actuating mechanism, including casing, connecting rod and driving motor, install the presser foot on the connecting rod, driving motor's drive shaft is connected with gear drive subassembly, and gear drive subassembly rotates with the casing through the connecting axle to be connected, and driving motor passes through gear drive subassembly to be connected with the connecting rod, and driving motor drives gear drive subassembly's rotation, drives the up-and-down motion of connecting rod, and then drives the up-and-down reciprocating motion of presser foot. The sewing machine drives the presser foot to move up and down through the gear transmission assembly, the precision is higher, the upper and lower heights of the presser foot are easier to adjust, the sewing machine is suitable for sewing fabrics with different thicknesses, meanwhile, the driving motor is arranged in the machine shell, the structure is compact, and the interference of the driving motor to the sewing work can be effectively avoided.

Description

Presser foot driving mechanism of sewing machine

Technical Field

The present disclosure relates to the field of sewing machines, and more particularly, to a presser foot driving mechanism for 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 thread tracks on the stitching material with one or more stitching threads. The sewing machine can sew cotton, hemp, silk, wool, artificial fiber and other fabrics, leather, plastic, paper and other products, and the sewn stitch is neat, beautiful, flat, firm, fast in sewing speed and simple and convenient to use. The Chinese sewing machine industry is growing at a striking rate, china has become the first country of production with the first place in the world, and now there are many places in China where the sewing bar is opened, so that the sewing machine can reenter the line of sight of people from one corner of the society.

The presser foot of the sewing machine is an indispensable component in a feeding mechanism of the sewing machine, is an important component in sewing equipment, and can play a role in compressing and positioning cloth to be sewn so as to facilitate accurate and efficient cloth sewing. In the working process of the sewing machine, each time a section of stitch is completed, the presser foot needs to be lifted, the action is completed through a manual knee or a manual driving machine, a large moment needs to be applied, the frequency of the presser foot in the working process of the sewing machine is high, a large amount of workload can be brought, people search for a long time, and modern sewing equipment designs various types of automatic presser foot mechanisms and drives the presser foot to lift through pneumatic or electric operation.

The Chinese patent with the authority of the publication number CN216838477U discloses a presser foot driving mechanism of a sewing machine, which comprises a shell, a driving motor, a presser foot bar and a presser foot arranged on the presser foot bar, wherein the driving motor drives the presser foot bar to reciprocate up and down; according to the utility model, the driving motor is arranged in the shell, so that interference caused by external driving motor to sewing can be avoided, and meanwhile, the size of the machine head can be reduced, and the influence on transportation is avoided. However, this presser foot driving mechanism is difficult to precisely control the upward or downward height when the presser foot is adjusted up and down, which brings inconvenience to use.

Disclosure of Invention

To the defect or the problem that exist among the prior art, this disclosure provides a presser foot actuating mechanism of sewing machine, and this presser foot actuating mechanism of sewing machine compact structure can conveniently and accurate adjust the presser foot from top to bottom.

The technical scheme adopted by the present disclosure for solving the technical problems is as follows: the utility model provides a presser foot actuating mechanism of sewing machine, includes connecting rod and driving motor, installs the presser foot on the connecting rod, and driving motor's drive shaft is connected with gear drive subassembly, and gear drive subassembly rotates through the connecting axle and is connected with the casing, and driving motor passes through gear drive subassembly and is connected with the connecting rod, and driving motor drives gear drive subassembly's rotation, drives the up-and-down motion of connecting rod, and then drives the up-and-down reciprocating motion of presser foot.

As a preferred embodiment, the motor and gear assembly is disposed in the housing, and the connecting rod is at least partially disposed in the housing.

As the preferred embodiment, the gear transmission assembly comprises a first gear and a second gear, the first gear is connected with the driving shaft, the first gear is meshed with the second gear, the driving motor drives the first gear to rotate, the rotation of the first gear drives the second gear to swing, the first end of the second gear is connected with the casing through the connecting shaft, the second end of the second gear is connected with the connecting assembly, and the second gear is connected with the connecting rod through the connecting assembly.

As a preferred embodiment, the connecting assembly comprises a connecting plate and a connecting frame, one end of the connecting plate is hinged with the second gear, the other end of the connecting plate is hinged with the connecting frame, and the connecting frame is arranged on the connecting rod.

Further, one end of the connecting plate is connected with the second gear through a rotating shaft, the other end of the connecting plate is connected with the connecting frame through the rotating shaft, and the hinging position of the second gear and the connecting plate is arranged at the eccentric position of the second gear.

Further, the connecting frame is provided with a mounting hole, the connecting rod passes through the mounting hole, the side of the mounting hole is provided with an open slot, a lock nut is arranged in the open slot, and the lock nut passes through the open slot to limit the connecting frame on the connecting rod.

As a preferred embodiment, a sliding groove is formed in the corresponding position in the shell, one end of the connecting frame is arranged in the sliding groove in a sliding manner and moves up and down along the sliding groove, and the sliding groove plays a role in guiding in the up-and-down movement process of the connecting frame, so that the up-and-down movement of the connecting frame is more stable and smooth.

The rotation of the first gear drives the swing of the second gear, the swing of the second gear drives the connecting plate to move up and down, and then the connecting frame is driven to move up and down, and then the connecting frame drives the connecting rod to move up and down.

As a preferred embodiment, the first gear is a circular gear, and the second gear is an arc gear.

Further, a motor cavity is formed in the machine shell, the driving motor is arranged in the motor cavity, the motor cavity comprises a partition plate, a through hole is formed in the partition plate, and a driving shaft penetrates through the through hole and is connected with the first gear.

Compared with the existing product, the driving motor is connected with the connecting rod through the gear transmission assembly, the structure of gear transmission is compact, the instantaneous transmission ratio is constant, the working stability is higher, and the sewing work is smoother and more stable; the presser foot is adjusted through the gear transmission assembly, so that the height of the presser foot is adjusted more easily and conveniently.

Drawings

The present application will be described in further detail below in conjunction with the drawings and preferred embodiments, but it will be appreciated by those skilled in the art that these drawings are drawn for the purpose of illustrating the preferred embodiments only and thus should not be taken as limiting the scope of the present application. Moreover, unless specifically indicated otherwise, the drawings are merely schematic representations, not necessarily to scale, of the compositions or constructions of the described objects and may include exaggerated representations.

FIG. 1 is a schematic view of a presser foot drive mechanism of a sewing machine according to one embodiment of the present disclosure;

FIG. 2 is a second schematic view of a presser foot drive mechanism of the sewing machine of the present disclosure;

FIG. 3 is one of the schematic structural views of the connection of the drive motor and the presser foot of the present disclosure;

FIG. 4 is a second schematic view of the connection of the drive motor and the presser foot of the present disclosure;

FIG. 5 is a third schematic view of the presser foot drive mechanism of the sewing machine of the present disclosure;

fig. 6 is a partial enlarged view of fig. 5 a of the present disclosure.

Reference numerals illustrate:

1. a housing; 2. a driving motor; 3. a first gear; 4. a second gear; 5. a connecting plate; 6. a connecting frame; 7. a connecting rod; 8. a presser foot; 9. and a sliding groove.

Detailed Description

In order to better understand the technical solutions of the present disclosure, the present disclosure will be described in detail, clearly and completely with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present disclosure.

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.

Referring to fig. 1-4, an embodiment of the present disclosure provides a presser foot driving mechanism of a sewing machine, including a casing 1, a connecting rod 7 and a driving motor 2, wherein the driving motor 2 is disposed in the casing 1, the connecting rod 7 is provided with a presser foot 8, a driving shaft of the driving motor 2 is connected with a gear transmission assembly, the gear transmission assembly is rotationally connected with the casing 1 through a connecting shaft, the driving motor 2 is connected with the connecting rod 7 through the gear transmission assembly, the driving motor 2 drives the gear transmission assembly to rotate, drives the connecting rod 7 to move up and down, and further drives the presser foot 8 to reciprocate up and down. The driving motor 2 is connected with the connecting rod 7 through a gear transmission component, the gear transmission is reliable in work and compact in structure, the instantaneous transmission ratio is constant, the work stability is high, and the sewing work is smoother and more stable. The gear transmission assembly drives the presser foot 8 to move up and down, and the distance between every two teeth of the gear is relatively uniform, so that the gear transmission precision is higher, and the up and down height of the presser foot 8 is easier to adjust, so that the sewing machine is suitable for sewing fabrics with different thicknesses. The driving motor 2 is arranged in the machine shell 1, so that interference caused by sewing due to the fact that the driving motor 2 is arranged outside can be avoided, meanwhile, the size of the machine head can be reduced, and influences on transportation are avoided.

The gear transmission component is arranged in the machine shell 1, the upper end of the connecting rod 7 is positioned in the machine shell 1, the lower end of the connecting rod penetrates through the machine shell 1 and stretches out of the machine shell 1, and the arrangement ensures that the structure of the presser foot 8 driving mechanism of the sewing machine is more compact.

In an embodiment of the present disclosure, the gear transmission assembly includes a first gear 3 and a second gear 4, the first gear 3 is connected with the driving shaft, the first gear 3 is meshed with the second gear 4, the driving motor 2 drives the first gear 3 to rotate, and the rotation of the first gear 3 drives the second gear 4 to swing. The first end of the second gear 4 is connected with the casing 1 through a connecting shaft, the second end of the second gear 4 is connected with a connecting component, and the second gear 4 is connected with a connecting rod 7 through the connecting component. Specifically, the coupling assembling includes connecting plate 5 and link 6, and the one end of connecting plate 5 is articulated with second gear 4, and the other end of connecting plate 5 is articulated with link 6, and link 6 sets up on connecting rod 7. One end of the connecting plate 5 is connected with the second gear 4 through a rotating shaft, the other end of the connecting plate 5 is connected with the connecting frame 6 through a rotating shaft, and the hinging position of the second gear 4 and the connecting plate 5 is arranged at the eccentric position of the second gear 4, so that the connecting plate 5 swings under the drive of the second gear 4. The connecting frame 6 is provided with a mounting hole, the side edge of the mounting hole is provided with an open slot, a locking nut is arranged in the open slot, and the locking nut penetrates through the open slot to limit the connecting frame 6 on the connecting rod 7. The rotation of the first gear 3 drives the second gear 4 to swing, and the swing of the second gear 4 drives the connecting plate 5 to move up and down, so that the connecting frame 6 is driven to move up and down, and the connecting frame 6 drives the connecting rod 7 to move up and down. Preferably, the first gear 3 is a circular gear and the second gear 4 is an arc gear.

Referring to fig. 5 to 6, in an embodiment of the present disclosure, a chute 9 is disposed at a corresponding position in the casing 1, and one end of the connecting frame 6 is disposed in the chute 9 and moves up and down along the chute 9, so that the chute 9 plays a guiding role in the up and down movement of the connecting frame 6, so that the up and down movement of the connecting frame 6 is smoother and more silky.

Further, a motor cavity is arranged in the shell 1, the driving motor 2 is arranged in the motor cavity, the motor cavity comprises a partition plate, a through hole is formed in the partition plate, and a driving shaft penetrates through the through hole and is connected with the first gear 3.

The foregoing has outlined rather broadly the principles and embodiments of the present application in order that the detailed description of the utility model may be better understood, and in order that the present application may be better understood. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.

Claims

1. The utility model provides a presser foot actuating mechanism of sewing machine, a serial communication port, including casing (1), connecting rod (7) and driving motor (2), install presser foot (8) on connecting rod (7), driving motor's (2) drive shaft is connected with gear drive subassembly, gear drive subassembly passes through the connecting axle and rotates with casing (1) to be connected, driving motor (2) are connected with connecting rod (7) through gear drive subassembly, driving motor (2) drive gear drive subassembly's rotation, drive the up-and-down motion of connecting rod (7), and then drive the up-and-down reciprocating motion of presser foot (8).

2. The presser foot drive mechanism of a sewing machine of claim 1, characterized in that the drive motor (2) and gear transmission assembly are provided in the housing (1), and the connecting rod (7) is provided at least partially in the housing (1).

3. The presser foot driving mechanism of a sewing machine according to claim 1, wherein the gear transmission assembly comprises a first gear (3) and a second gear (4), the first gear (3) is connected with the driving shaft, the first gear (3) is meshed with the second gear (4), the driving motor (2) drives the first gear (3) to rotate, the rotation of the first gear (3) drives the second gear (4) to swing, the first end of the second gear (4) is rotationally connected with the casing (1) through the connecting shaft, the second end of the second gear (4) is connected with the connecting assembly, and the second gear (4) is connected with the connecting rod (7) through the connecting assembly.

4. A presser foot drive mechanism of a sewing machine according to claim 3, characterized in that the connecting assembly comprises a connecting plate (5) and a connecting frame (6), one end of the connecting plate (5) is hinged with the second gear (4), the other end of the connecting plate (5) is hinged with the connecting frame (6), and the connecting frame (6) is arranged on the connecting rod (7).

5. The presser foot driving mechanism of a sewing machine according to claim 4, wherein one end of the connecting plate (5) is connected with the second gear (4) through a rotation shaft, the other end of the connecting plate (5) is connected with the connecting frame (6) through a rotation shaft, and the hinge joint of the second gear (4) and the connecting plate (5) is arranged at the eccentric position of the second gear (4).

6. The presser foot driving mechanism of a sewing machine according to claim 4, wherein the connecting frame (6) is provided with a mounting hole, the connecting rod (7) passes through the mounting hole, an open slot is provided at a side edge of the mounting hole, a lock nut is provided in the open slot, and the lock nut passes through the open slot to limit the connecting frame (6) on the connecting rod (7).

7. The presser foot driving mechanism of a sewing machine according to claim 6, wherein a chute (9) is provided in the housing (1), and one end portion of the connecting frame (6) is slidably provided in the chute (9) and moves up and down along the chute (9).

8. A presser foot drive mechanism of a sewing machine according to claim 3, characterized in that the first gear (3) is a circular gear and the second gear (4) is an arc gear.

9. The presser foot driving mechanism of a sewing machine according to claim 8, wherein a motor chamber is provided in the housing (1), the driving motor (2) is provided in the motor chamber, the motor chamber includes a partition plate provided with a through hole, and the driving shaft is connected with the first gear (3) through the through hole.