CN216514509U

CN216514509U - Presser foot structure and have its sewing machine

Info

Publication number: CN216514509U
Application number: CN202122293411.2U
Authority: CN
Inventors: 李健鹏; 林士华; 熊径武
Original assignee: Zhejiang Dole Sewing Machine Co ltd
Current assignee: Zhejiang Dole Sewing Machine Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-05-13
Anticipated expiration: 2031-09-22

Abstract

The utility model provides a presser foot structure and a sewing machine with the same, wherein the presser foot structure is used for driving a pressing device of the sewing machine to carry out presser foot lifting movement, and comprises: the pressing rod component is connected with the shell of the sewing machine in a relatively movable manner, and one end of the pressing rod component is connected with the pressing device; the driving assembly comprises a driving part, and the driving part is positioned on one side of the pressing rod part away from the pressing device; the elastic component is connected with the pressure lever part and the shell; the presser foot structure solves the problem that a pressing rod of the presser foot structure in the prior art is easy to damage in work.

Description

Presser foot structure and have its sewing machine

Technical Field

The utility model relates to the field of sewing machines, in particular to a presser foot structure and a sewing machine with the same.

Background

In the existing sewing machine, a pressing device of the sewing machine fixes cloth so as to assist the action of a needle, and the movement of the pressing device usually adopts a cylinder to drive a pressing rod to move so as to drive the pressing device to move.

However, the driving manner enables the pressure rod between the pressing device and the cylinder to bear a relatively large shearing force, so that the pressure rod is bent or dislocated and the like during long-term use, and the performance of the pressing device is affected.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a presser foot structure to solve the problem that a pressure rod of the presser foot structure in the prior art is easy to damage in work.

In order to achieve the above object, according to one aspect of the present invention, there is provided a presser foot structure for driving a presser device of a sewing machine to perform a presser foot lifting motion, the presser foot structure comprising: the pressing rod component is connected with the shell of the sewing machine in a relatively movable manner, and one end of the pressing rod component is connected with the pressing device; the driving component comprises a driving part, and the driving part is positioned on one side of the pressing rod component away from the pressing device; the elastic component is connected with the pressure lever part and the shell; the driving part is movably arranged along the direction close to or far away from the pressure rod component so as to push the pressure rod component to move through the driving part, or the driving part is far away from the pressure rod component so as to enable the pressure rod component to reset under the action of the elastic component.

Further, the elastic member includes: the limiting component is connected with the pressure rod component; the elastic piece is positioned on one side of the limiting part far away from the driving part, one end of the elastic piece is connected with the limiting part, and the other end of the elastic piece is connected with the shell; when the driving part is far away from the pressure lever component, the pressure lever component moves towards the direction close to the driving part under the action of the elastic piece.

Further, spacing part cover is established on the depression bar part, and spacing part includes the connecting portion that two looks intervals set up, and elastic component still includes the fastener, and the fastener is worn to establish on two connecting portions in order to adjust the distance between two connecting portions to adjust the elasticity that spacing part connects on the depression bar part.

Further, the presser foot structure includes the guide rail part, and the guide rail part sets up on the casing, is provided with the guide way on the guide rail part, and spacing part includes the connecting block with guide way matched with to carry on spacingly through the guide rail part to the connecting block.

Further, the presser foot structure comprises a guide member having a guide passage extending in the moving direction of the pressing device, and at least a part of the presser bar member is movably disposed in the guide passage to restrict the moving direction of the presser bar member by the guide member.

Further, the driving part is movably arranged in the guide channel, and a moving gap is formed between the driving part and the guide component.

Further, the guide channel comprises a first guide channel for accommodating the driving part and a second guide channel in sliding connection with at least part of the guide rail component; wherein, along the extending direction of the guide channels, the cross-sectional area of the first guide channel is larger than that of the second guide channel.

Furthermore, the guide component and the driving part are both cylindrical structures, and the first guide channel is a cylindrical channel; wherein the guide member has a diameter smaller than an inner diameter of the first guide passage to form a moving gap between the guide member and the first guide passage.

Further, the casing comprises a first casing and a second casing, and an accommodating cavity is formed between the first casing and the second casing; the drive assembly includes: the cylinder body of the driving cylinder is arranged on one side, away from the pressure rod component, of the first shell, and a cylinder arm of the driving cylinder penetrates through the first shell and is connected with the driving part so as to drive the driving part to move in the accommodating cavity; the pressure lever part is connected with the second shell in a relatively sliding way.

According to another aspect of the utility model, a sewing machine is provided, which comprises a presser foot structure.

By applying the technical scheme of the utility model, the presser foot structure is used for driving a pressing device of the sewing machine to carry out presser foot lifting movement, and comprises: the pressing rod component is connected with the shell of the sewing machine in a relatively movable manner, and one end of the pressing rod component is connected with the pressing device; the driving component comprises a driving part, and the driving part is positioned on one side of the pressing rod component away from the pressing device; the elastic component is connected with the pressure lever part and the shell; the driving part is movably arranged along the direction close to or far away from the pressure rod component so as to push the pressure rod component to move through the driving part, or the driving part is far away from the pressure rod component so as to enable the pressure rod component to reset under the action of the elastic component. By adopting the arrangement, the pressure lever component is pushed to move through the movement of the driving part, so that the direct connection of the pressure lever component and the driving assembly is avoided, the pressure applied to the pressure lever component is reduced, the working pressure of the pressure lever component is reduced, and the problem that the pressure lever of the pressure foot structure in the prior art is easy to damage in working is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a presser foot arrangement according to the utility model;

fig. 2 shows a partially enlarged schematic view of portion I of the presser foot arrangement of the present invention in fig. 1;

FIG. 3 is a schematic view of the connection of the drive assembly to the presser bar member of the presser foot arrangement of the present invention;

fig. 4 is a schematic view showing the connection relationship between the driving part and the pressing rod component of the presser foot structure of the present invention; and

fig. 5 shows a schematic view of the internal structure of the guide member of the presser foot structure of the present invention.

Wherein the figures include the following reference numerals:

10. a housing; 101. a first housing; 102. a second housing; 103. an accommodating cavity; 20. a pressing device;

1. a compression bar component; 2. a drive assembly; 22. a driving cylinder; 21. a drive section; 221. a cylinder body; 3. an elastic component; 31. a limiting component; 311. a connecting portion; 312. connecting blocks; 32. an elastic member; 33. a fastener; 4. a guide rail member; 41. a guide groove; 5. a guide member; 51. a guide channel; 511. a first guide channel; 512. a second guide channel.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The presser foot structure of the present embodiment, referring to fig. 1 to 5, is used for driving the presser device 20 of the sewing machine to perform the presser foot lifting motion, and includes: the pressing rod component 1, the pressing rod component 1 is connected with the shell 10 of the sewing machine in a relatively movable way, and one end of the pressing rod component 1 is connected with the pressing device 20; the driving assembly 2, the driving assembly 2 includes a driving part 21, the driving part 21 is located on one side of the pressure rod component 1 far away from the pressing device 20; the elastic component 3, the elastic component 3 is connected with the compression bar component 1, the elastic component 3 is connected with the casing 10; wherein, the driving portion 21 is movably disposed along a direction approaching or departing from the pressing rod component 1 to push the pressing rod component 1 to move through the driving portion 21, or the driving portion 21 is separated from the pressing rod component 1 to reset the pressing rod component 1 under the action of the elastic component 3. By adopting the arrangement, the pressure lever component 1 is pushed to move through the movement of the driving part 21, so that the direct connection of the pressure lever component 1 and the driving component 2 is avoided, the pressure applied to the pressure lever component 1 is reduced, the working pressure of the pressure lever component 1 is reduced, and the problem that the pressure lever of the pressure foot structure in the prior art is easy to damage in working is solved.

In order to cooperate with the driving assembly 2, referring to fig. 1 to 4, in the presser foot structure of the present embodiment, the elastic assembly 3 includes: the limiting component 31, the limiting component 31 is connected with the pressure bar component 1; the elastic piece 32, the elastic piece 32 is located on one side of the limiting part 31 far away from the driving part 21, one end of the elastic piece 32 is connected with the limiting part 31, and the other end of the elastic piece 32 is connected with the casing 10; when the driving portion 21 is away from the plunger member 1, the plunger member 1 is moved toward the driving portion 21 by the elastic member 32. With the above arrangement, the presser bar member 1 can be reset after being pushed.

In the presser foot structure of the present embodiment, referring to fig. 1 to 4, the limiting component 31 is sleeved on the pressing rod component 1, the limiting component 31 includes two connecting portions 311 arranged at intervals, the elastic component 3 further includes a fastening member 33, and the fastening member 33 is inserted into the two connecting portions 311 to adjust the distance between the two connecting portions 311, so as to adjust the tightness of the limiting component 31 connected to the pressing rod component 1. Thus, the position of the stopper member 31 can be adjusted, and the resilient force of the elastic member 32 can be adjusted.

Referring to fig. 1 to 4, in the presser foot structure of the present embodiment, the presser foot structure includes a guide rail member 4, the guide rail member 4 is disposed on the housing 10, a guide groove 41 is disposed on the guide rail member 4, and the limiting member 31 includes a connecting block 312 matched with the guide groove 41 to limit the connecting block 312 by the guide rail member 4, so as to limit the rotation of the pressing rod member 1.

In order to make the movement of the presser bar member 1 more smooth, in the presser foot structure of the present embodiment, referring to fig. 1 to 5, the presser foot structure includes a guide member 5 having a guide passage 51, the guide passage 51 extending in the moving direction of the presser device 20, and at least a part of the presser bar member 1 is movably disposed in the guide passage 51 to restrict the moving direction of the presser bar member 1 by the guide member 5.

In order to ensure good contact between the driving portion 21 and the pressing rod member 1, referring to fig. 1 to 5, in the pressing foot structure of the present embodiment, the driving portion 21 is movably disposed in the guide passage 51 with a moving gap between the driving portion 21 and the guide member 5.

In the presser foot structure of the present embodiment, referring to fig. 5, the guide passage 51 includes a first guide passage 511 for accommodating the driving portion 21 and a second guide passage 512 slidably connected to at least a part of the guide rail member 4; wherein the cross-sectional area of the first guide passage 511 is larger than that of the second guide passage 512 in the extending direction of the guide passage 51. In this way, the structure of the guide member 5 can be made more stable.

Specifically, the guide passage 51 of the present embodiment is a cylindrical passage, and the cross-sectional area of the first guide passage 511 is larger than that of the second guide passage 512, i.e., the area of the circular cross-section of the radial plane of the cylindrical passage.

In order to ensure that the driving portion 21 moves smoothly, referring to fig. 1 to 5, in the presser foot structure of the present embodiment, the guide member 5 and the driving portion 21 are both cylindrical structures, and the first guide passage 511 is a cylindrical passage; wherein the guide member 5 has a diameter smaller than the inner diameter of the first guide passage 511 to form a moving gap between the guide member 5 and the first guide passage 511.

In the presser foot structure of the present embodiment, referring to fig. 1 to 5, the housing 10 includes a first housing 101 and a second housing 102, with an accommodating cavity 103 between the first housing 101 and the second housing 102; the drive assembly 2 includes: the cylinder body 221 of the driving cylinder 22 is arranged on one side of the first shell 101 away from the pressure rod component 1, and the cylinder arm of the driving cylinder 22 penetrates through the first shell 101 and is connected with the driving part 21 so as to drive the driving part 21 to move in the accommodating cavity 103; the plunger member 1 is connected to the second housing 102 so as to be slidable relative thereto. With the arrangement, the inner space of the sewing machine shell 10 is reasonably utilized, so that the structure is more compact.

The sewing machine of the embodiment comprises the presser foot structure, and the presser foot structure is the presser foot structure.

The presser foot structure of the present embodiment is explained as follows:

the pressing device is fixedly connected to the pressing rod (pressing rod component 1), and the pressing device (driving component 2) drives the pressing rod to press downwards; the pressure lever passes through the upper sleeve (guide part 5) and the lower sleeve and can move up and down, and the upper sleeve and the lower sleeve are fixed on the shell 10; the guide frame (limiting part 31) is fixed on the pressure lever and can move up and down on the guide groove (guide groove 41) of the shell and limit the rotation of the pressure lever; a return spring (elastic piece 32) is arranged between the guide frame and the lower sleeve, the return spring is compressed when the lower pressing device drives the pressing rod to press downwards, and the return spring drives the guide frame to ascend to realize the up-and-down movement of the pressing rod when the lower pressing device cancels the pressing force on the pressing rod. The head of the pressing device is provided with a buffer joint (a driving part 21) to reduce impact sound to the pressing rod, the pressing device can realize adjustment of pressing force, and an adjusting screw (a fastener 33) above the pressing device can realize adjustment of pressing.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the utility model relates to a presser foot structure, which is used for driving a pressing device 20 of a sewing machine to carry out presser foot lifting movement, and comprises: the pressing rod component 1, the pressing rod component 1 is connected with the shell 10 of the sewing machine in a relatively movable way, and one end of the pressing rod component 1 is connected with the pressing device 20; the driving assembly 2, the driving assembly 2 includes a driving part 21, the driving part 21 is located on one side of the pressure rod component 1 far away from the pressing device 20; the elastic component 3, the elastic component 3 is connected with the compression bar component 1, the elastic component 3 is connected with the casing 10; wherein, the driving portion 21 is movably disposed along a direction approaching or departing from the pressing rod component 1 to push the pressing rod component 1 to move through the driving portion 21, or the driving portion 21 is separated from the pressing rod component 1 to reset the pressing rod component 1 under the action of the elastic component 3. By adopting the arrangement, the pressure lever component 1 is pushed to move through the movement of the driving part 21, so that the direct connection of the pressure lever component 1 and the driving component 2 is avoided, the pressure applied to the pressure lever component 1 is reduced, the working pressure of the pressure lever component 1 is reduced, and the problem that the pressure lever of the pressure foot structure in the prior art is easy to damage in working is solved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A presser foot arrangement for driving a presser device (20) of a sewing machine for a presser foot lifting movement, characterized in that the presser foot arrangement comprises:

the pressing rod component (1), the pressing rod component (1) is connected with a shell (10) of the sewing machine in a relatively movable mode, and one end of the pressing rod component (1) is connected with the pressing device (20);

the driving assembly (2), the driving assembly (2) comprises a driving part (21), and the driving part (21) is positioned on one side of the pressure rod component (1) far away from the pressing device (20);

the elastic component (3), the elastic component (3) is connected with the pressure lever part (1), and the elastic component (3) is connected with the shell (10);

the driving part (21) is movably arranged along the direction close to or far away from the pressure lever component (1) so as to push the pressure lever component (1) to move by driving the driving part (21), or the driving part (21) is driven far away from the pressure lever component (1) so as to enable the pressure lever component (1) to reset under the action of the elastic component (3).

2. Presser foot arrangement according to claim 1, characterized in that said elastic assembly (3) comprises:

the limiting component (31), the limiting component (31) is connected with the pressure lever component (1);

the elastic piece (32) is positioned on one side, away from the driving part (21), of the limiting part (31), one end of the elastic piece (32) is connected with the limiting part (31), and the other end of the elastic piece (32) is connected with the machine shell (10); when the driving part (21) is far away from the pressure lever component (1), the pressure lever component (1) moves towards the direction close to the driving part (21) under the action of the elastic piece (32).

3. The presser foot structure according to claim 2, wherein the limiting member (31) is sleeved on the pressure lever member (1), the limiting member (31) comprises two connecting portions (311) arranged at an interval, the elastic assembly (3) further comprises a fastening member (33), and the fastening member (33) is arranged on the two connecting portions (311) in a penetrating manner to adjust the distance between the two connecting portions (311) so as to adjust the tightness of the limiting member (31) connected to the pressure lever member (1).

4. Presser foot arrangement according to claim 2, characterized in that the presser foot arrangement comprises a guide rail member (4), the guide rail member (4) being arranged on the housing (10), the guide rail member (4) being provided with a guide groove (41), the stop member (31) comprising a connecting block (312) cooperating with the guide groove (41) for stopping the connecting block (312) by means of the guide rail member (4).

5. Presser foot arrangement according to claim 4, characterized in that the presser foot arrangement comprises a guide member (5) having a guide channel (51), the guide channel (51) extending in the direction of movement of the pressing device (20), at least part of the presser bar member (1) being movably arranged within the guide channel (51) to limit the direction of movement of the presser bar member (1) by the guide member (5).

6. Presser foot arrangement according to claim 5, characterized in that said drive portion (21) is movably arranged in said guide channel (51), with a moving gap between said drive portion (21) and said guide member (5).

7. Presser foot arrangement according to claim 6, wherein said guide channel (51) comprises a first guide channel (511) for accommodating said drive portion (21) and a second guide channel (512) in sliding connection with at least a part of said guide rail member (4); wherein the cross-sectional area of the first guide channel (511) is larger than the cross-sectional area of the second guide channel (512) in the extension direction of the guide channel (51).

8. Presser foot arrangement according to claim 7, wherein the guide member (5) and the drive portion (21) are both of cylindrical configuration, the first guide channel (511) being a cylindrical channel; wherein the diameter of the guide member (5) is smaller than the inner diameter of the first guide passage (511) to form the moving gap between the guide member (5) and the first guide passage (511).

9. Presser foot arrangement according to claim 1, wherein said housing (10) comprises a first shell (101) and a second shell (102), said first shell (101) and said second shell (102) having an accommodation cavity (103) therebetween; the drive assembly (2) comprises: a driving cylinder (22), wherein a cylinder body (221) of the driving cylinder (22) is arranged on one side of the first shell (101) far away from the pressure rod component (1), and a cylinder arm of the driving cylinder (22) penetrates through the first shell (101) and is connected with the driving part (21) so as to drive the driving part (21) to move in the accommodating cavity (103); the pressure lever component (1) is connected with the second shell (102) in a relatively sliding mode.

10. A sewing machine comprising a presser foot arrangement, characterized in that the presser foot arrangement is as claimed in any one of claims 1 to 9.