CN217869412U

CN217869412U - Lift presser foot structure and have its sewing machine

Info

Publication number: CN217869412U
Application number: CN202222173651.3U
Authority: CN
Inventors: 严海军; 易相瑞; 黄玉敏; 刘俊; 朱礼健; 沈青松
Original assignee: Zhongjie Sewing Machine Co Ltd
Current assignee: Zhongjie Sewing Machine Co Ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-11-22
Anticipated expiration: 2032-08-17

Abstract

The utility model provides a presser foot lifting structure and a sewing machine with the same, wherein the presser foot lifting structure comprises a top rod which is movably arranged; a drive motor; an output shaft of the driving motor is used for being connected with the ejector rod so as to push the ejector rod to move; the connecting rod assembly comprises a rear lever, a roller used for contacting the ejector rod is arranged on the rear lever, and the roller can be rotatably arranged; the rear lever is rotatably arranged; the depression bar, the depression bar is connected with the back lever to drive the depression bar through the back lever and remove, be provided with sewing machine's presser foot on the depression bar, the utility model discloses a lift the presser foot structure and solved the problem that the assembly precision of lifting the presser foot structure among the prior art required highly.

Description

Lift presser foot structure and have its sewing machine

Technical Field

The utility model relates to a sewing machine field particularly, relates to a lift presser foot structure and have its sewing machine.

Background

The existing sewing machine has multiple functions and can meet various requirements of sewing operation. Therefore, the sewing machine is a precise machine.

However, in the conventional sewing machine, the presser foot lifting operation is required to be performed continuously during sewing, and in the process of the operation of the sewing machine, the wear of the components which are matched with each other is easy to occur in the presser foot lifting structure, so that the working precision and the service life of the sewing machine are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lift presser foot structure and have its sewing machine to solve the problem that the assembly precision of lifting the presser foot structure among the prior art required highly.

In order to achieve the above object, according to the utility model discloses an aspect provides a lift presser foot structure, include: the ejector rod is movably arranged; a drive motor; an output shaft of the driving motor is used for being connected with the ejector rod so as to push the ejector rod to move; the connecting rod assembly comprises a rear lever, a roller used for contacting the ejector rod is arranged on the rear lever, and the roller can be rotatably arranged; the rear lever is rotatably arranged; the pressing rod is connected with the rear lever so as to drive the pressing rod to move through the rear lever, and a presser foot of the sewing machine is arranged on the pressing rod.

Further, the presser foot structure of lifting of this embodiment lifts the presser foot structure and still includes and lifts the presser foot crank, lifts the presser foot crank setting on driving motor's output shaft, lifts the presser foot crank and includes: the connecting part is sleeved on an output shaft of the driving motor; the connecting rod, the connecting rod is connected with connecting portion, and the connecting rod has the face of being connected that is used for with the ejector pin contact to rotate through the drive connecting rod, drive the ejector pin and remove.

Further, lift presser foot structure and include the support, the support is connected with sewing machine's organism, and the support includes the deflector, and the ejector pin is worn to establish in the deflector.

Further, the guide plates are provided in plurality, and the plurality of guide plates are arranged at intervals.

Furthermore, a top rod joint is arranged on the top rod, and a top connecting surface used for contacting with the roller is arranged on the top rod joint; an elastic part is arranged between the ejector rod joint and the guide plate, one end of the elastic part is connected with the ejector rod joint, and the other end of the elastic part is connected with the guide plate.

Furthermore, the ejector rod joint comprises an adjusting nut, the adjusting nut is adjustably arranged on the ejector rod in position, one end of the elastic piece is connected with the adjusting nut, and the other end of the elastic piece is connected with the guide plate.

Further, the rear lever includes: the mounting part is provided with a first connecting piece in a penetrating way so as to enable the rear lever to be relatively and rotatably connected with a shell of the sewing machine through the first connecting piece; one end of the first rotating rod is connected with the mounting part, and the roller is arranged at the other end of the first rotating rod; one end of the second rotating rod is connected with the mounting part, and the other end of the second rotating rod is used for being connected with the pressing rod.

Furthermore, the connecting rod assembly comprises a front lever, a second connecting piece is arranged on the front lever and connected with a shell of the sewing machine, and the front lever and the second connecting piece are relatively and rotatably connected; the front lever is provided with a third rotating rod connected with the rear lever and a fourth rotating rod connected with the pressure rod, so that the pressure rod is driven to move by driving the front lever to rotate.

Furthermore, the connecting rod assembly comprises a pull rod, one end of the pull rod is relatively rotatably connected with the front lever, and the other end of the pull rod is relatively rotatably connected with the rear lever, so that the rear lever drives the front lever to rotate through the pull rod.

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

By applying the technical scheme of the utility model, the presser foot lifting structure comprises a mandril which can be movably arranged; a drive motor; an output shaft of the driving motor is used for being connected with the ejector rod so as to push the ejector rod to move; the connecting rod assembly comprises a rear lever, a roller used for contacting the ejector rod is arranged on the rear lever, and the roller can be rotatably arranged; the rear lever is rotatably arranged; the pressing rod is connected with the rear lever so as to drive the pressing rod to move through the rear lever, and a pressing foot of the sewing machine is arranged on the pressing rod. By adopting the arrangement, the rotatable roller is arranged on the rear lever, the connection with the ejector rod is realized through the roller, and the roller can be allowed to have certain dislocation in the process, so that the structural precision requirement of equipment is reduced, and the problem of high assembly precision requirement of the presser foot lifting structure of the sewing machine in the prior art is solved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a sewing machine according to the present invention;

fig. 2 is a partially enlarged view of a portion I of the sewing machine of the present invention shown in fig. 1.

Wherein the figures include the following reference numerals:

100. a connecting rod assembly; 200. a presser foot; 1. a drive motor; 2. lifting a presser foot crank; 21. a connecting portion; 22. a connecting rod; 3. a top rod; 4. an elastic member; 5. a top rod joint; 6. a roller; 7. a support; 71. a guide plate; 8. a rear lever; 81. an installation part; 82. a first rotating lever; 83. a second rotating rod; 9. a first connecting member; 10. a pull rod; 11. a front lever; 12. a second connecting member; 13. a compression bar screw; 14. a compression bar spring; 15. a pressure bar support; 16. a pressure lever.

Detailed Description

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

Referring to fig. 1 and 2, the presser foot lifting structure of the present embodiment includes: the ejector rod 3 is movably arranged; a drive motor 1; an output shaft of the driving motor 1 is used for being connected with the ejector rod 3 so as to push the ejector rod 3 to move; the connecting rod assembly 100 comprises a rear lever 8, a roller 6 used for contacting with the ejector rod 3 is arranged on the rear lever 8, and the roller 6 can be rotatably arranged; the rear lever 8 is rotatably arranged; and the pressing rod 16, the pressing rod 16 is connected with the rear lever 8 so as to drive the pressing rod 16 to move through the rear lever 8, and the pressing rod 16 is provided with a presser foot 200 of the sewing machine. By adopting the arrangement, the rear lever 8 is provided with the rotatable roller 6, the roller 6 is connected with the ejector rod 3, and the roller 6 can be allowed to have certain dislocation in the process, so that the structural precision requirement of equipment is reduced, and the problem of high assembly precision requirement of the presser foot lifting structure of the sewing machine in the prior art is solved.

In the presser foot lifting structure of this embodiment, referring to fig. 1 and 2, the presser foot lifting structure further includes a presser foot lifting crank 2, the presser foot lifting crank 2 is disposed on the output shaft of the driving motor 1, and the presser foot lifting crank 2 includes: the connecting part 21 is sleeved on the output shaft of the driving motor 1, and the connecting part 21 is sleeved on the output shaft of the driving motor 1; the connecting rod 22, the connecting rod 22 is connected with the connecting portion 21, the connecting rod 22 has a connecting surface for contacting with the push rod 3, so as to drive the push rod 3 to move by driving the connecting rod 22 to rotate.

Referring to fig. 1 and 2, in the presser foot lifting structure of the present embodiment, the presser foot lifting structure includes a bracket 7, the bracket 7 is connected with the body of the sewing machine, the bracket 7 includes a guide plate 71, and the push rod 3 is inserted into the guide plate 71.

In the presser foot lifting structure of the present embodiment, referring to fig. 1 and 2, a plurality of guide plates 71 are provided, and the plurality of guide plates 71 are provided at intervals.

Referring to fig. 1 and 2, in the presser foot lifting structure of the present embodiment, a top rod connector 5 is arranged on a top rod 3, and a top contact surface for contacting with a roller 6 is arranged on the top rod connector 5; an elastic part 4 is arranged between the mandril joint 5 and the guide plate 71, one end of the elastic part 4 is connected with the mandril joint 5, and the other end of the elastic part 4 is connected with the guide plate 71.

In the presser foot lifting structure of the present embodiment, referring to fig. 1 and 2, the lift pin joint 5 includes an adjusting nut which is adjustably disposed on the lift pin 3, one end of the elastic member 4 is connected to the adjusting nut, and the other end of the elastic member 4 is connected to the guide plate 71.

Referring to fig. 1 and 2, in the presser foot lifting structure of the present embodiment, the rear lever 8 includes: a mounting part 81, wherein a first connecting piece 9 is arranged on the mounting part 81 in a penetrating way, so that the rear lever 8 is relatively and rotatably connected with the shell of the sewing machine through the first connecting piece 9; a first rotating rod 82, one end of the first rotating rod 82 is connected with the mounting part 81, and the roller 6 is arranged at the other end of the first rotating rod 82; and one end of the second rotating rod 83 is connected with the mounting part 81, and the other end of the second rotating rod 83 is used for being connected with the pressure rod 16.

In the presser foot lifting structure of the present embodiment, referring to fig. 1 and fig. 2, the connecting rod assembly 100 includes a front lever 11, a second connecting member 12 is disposed on the front lever 11, the second connecting member 12 is connected to a housing of the sewing machine, and the front lever 11 and the second connecting member 12 are relatively rotatably connected; the front lever 11 has a third rotary rod connected with the rear lever 8 and a fourth rotary rod for connecting with the press rod 16, so as to drive the press rod 16 to move by driving the front lever 11 to rotate.

Referring to fig. 1 and 2, in the presser foot lifting structure of the present embodiment, the link assembly 100 includes a pull rod 10, one end of the pull rod 10 is relatively rotatably connected to the front lever 11, and the other end of the pull rod 10 is relatively rotatably connected to the rear lever 8, so that the rear lever 8 drives the front lever 11 to rotate through the pull rod 10.

According to the utility model discloses an on the other hand provides a sewing machine, including lifting the presser foot structure, lift the presser foot structure and be foretell lift the presser foot structure.

The output shaft of the driving motor 1 (here, the stepping motor is selected) is provided with a presser foot lifting crank 2, and the driving motor 1 is fixed on the shell. The ejector rod 3 penetrates into a hole of the support 7, the support 7 is fixed on the machine shell through a screw, and one end of the ejector rod 3 is connected with the ejector rod joint 5. The support 7 is provided with an elastic part 4 (here, a spring) which plays a role of buffering.

One end of the rear lever 8 is connected with the roller 6, the rear lever 8 is fixed on the machine shell through a first connecting piece 9, and the other end of the rear lever 8 is connected with a pull rod 10. The other end of the pull rod 10 is hinged to the front lever 11 by a screw. The front lever 11 is fixed to the housing by a second link 12 and is rotatable.

The press rod 16 is arranged on the shell and can move up and down, a press rod screw 13 is arranged above the press rod 16, and a press rod spring 14 is arranged in the middle of the press rod 16. When the front lever 11 rotates, the pressing rod 16 is driven to move up and down.

When the sewing machine starts or finishes sewing, the presser foot needs to be lifted, the driving motor 1 rotates, the presser foot lifting crank 2 rotates along with the motor shaft, and the presser foot moves up and down through the connecting rod structure.

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

the presser foot lifting structure of the utility model comprises a mandril 3, and the mandril 3 can be movably arranged; a drive motor 1; an output shaft of the driving motor 1 is used for being connected with the ejector rod 3 so as to push the ejector rod 3 to move; the connecting rod assembly 100 comprises a rear lever 8, a roller 6 used for contacting with the ejector rod 3 is arranged on the rear lever 8, and the roller 6 can be rotatably arranged; the rear lever 8 is rotatably arranged; and the pressing rod 16, the pressing rod 16 is connected with the rear lever 8 so as to drive the pressing rod 16 to move through the rear lever 8, and the pressing rod 16 is provided with a presser foot 200 of the sewing machine. By adopting the arrangement, the rear lever 8 is provided with the rotatable roller 6, the roller 6 is connected with the ejector rod 3, and the roller 6 can be allowed to have certain dislocation in the process, so that the structural precision requirement of equipment is reduced, and the problem of high assembly precision requirement of the presser foot lifting structure of the sewing machine in the prior art is solved.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

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 lift presser foot structure, characterized in that includes:

the ejector rod (3), the said ejector rod (3) is movably set up;

a drive motor (1); the output shaft of the driving motor (1) is used for being connected with the ejector rod (3) to push the ejector rod (3) to move;

the connecting rod assembly (100) comprises a rear lever (8), a roller (6) used for being in contact with the ejector rod (3) is arranged on the rear lever (8), and the roller (6) is rotatably arranged; the rear lever (8) is rotatably arranged;

the pressing rod (16) is connected with the rear lever (8) so as to drive the pressing rod (16) to move through the rear lever (8), and a pressing foot (200) of a sewing machine is arranged on the pressing rod (16).

2. The presser foot lifting structure according to claim 1, further comprising a presser foot lifting crank (2), the presser foot lifting crank (2) being provided on an output shaft of the drive motor (1), the presser foot lifting crank (2) comprising:

the connecting part (21), the connecting part (21) is sleeved on the output shaft of the driving motor (1);

connecting rod (22), connecting rod (22) with connecting portion (21) are connected, connecting rod (22) have be used for with the connection face of ejector pin (3) contact to through the drive connecting rod (22) rotate, drive ejector pin (3) remove.

3. The presser foot lifting structure according to claim 1, characterized in that the presser foot lifting structure comprises a bracket (7), the bracket (7) is connected with a sewing machine body, the bracket (7) comprises a guide plate (71), and the push rod (3) is arranged in the guide plate (71) in a penetrating way.

4. The presser foot lifting structure according to claim 3, wherein the guide plate (71) is plural, and the plural guide plates (71) are provided at intervals.

5. The presser foot lifting structure according to claim 4, wherein a lifter bar joint (5) is provided on the lifter bar (3), and a top contact surface for contacting with the roller (6) is provided on the lifter bar joint (5); an elastic part (4) is arranged between the ejector rod joint (5) and the guide plate (71), one end of the elastic part (4) is connected with the ejector rod joint (5), and the other end of the elastic part (4) is connected with the guide plate (71).

6. Presser foot lifting arrangement according to claim 5, wherein the ram joint (5) comprises an adjustment nut which is position adjustably arranged on the ram (3), one end of the elastic member (4) being connected to the adjustment nut and the other end of the elastic member (4) being connected to the guide plate (71).

7. The lift and presser foot structure according to claim 1, wherein the rear lever (8) comprises:

the mounting part (81), a first connecting piece (9) penetrates through the mounting part (81), so that the rear lever (8) is relatively and rotatably connected with a shell of the sewing machine through the first connecting piece (9);

a first rotating rod (82), wherein one end of the first rotating rod (82) is connected with the mounting part (81), and the roller (6) is arranged at the other end of the first rotating rod (82);

one end of the second rotating rod (83) is connected with the mounting part (81), and the other end of the second rotating rod (83) is used for being connected with the pressing rod (16).

8. The presser foot lifting structure according to claim 1, wherein the connecting rod assembly (100) comprises a front lever (11), a second connecting piece (12) is arranged on the front lever (11), the second connecting piece (12) is connected with a shell of the sewing machine, and the front lever (11) and the second connecting piece (12) are relatively rotatably connected; the front lever (11) is provided with a third rotating rod connected with the rear lever (8) and a fourth rotating rod connected with the pressure rod (16) so as to drive the pressure rod (16) to move by driving the front lever (11) to rotate.

9. Presser foot lifting arrangement according to claim 8, wherein the linkage assembly (100) comprises a pull rod (10), one end of the pull rod (10) is relatively rotatably connected to the front lever (11), and the other end of the pull rod (10) is relatively rotatably connected to the rear lever (8), such that the rear lever (8) via the pull rod (10) rotates the front lever (11).

10. A sewing machine comprising a presser foot lifting structure, wherein the presser foot lifting structure is as claimed in any one of claims 1 to 9.