CN217973611U - Lift presser foot structure and have its sewing machine - Google Patents

Abstract

The utility model provides a presser foot lifting structure and a sewing machine with the same, which comprises a driving motor, wherein the driving motor is connected with the sewing machine body, and an output shaft of the driving motor is provided with a driving wheel; the driving wheel is a cam mechanism; the driven part is rotatably arranged on the sewing machine body; the driven part has the connection face that is used for with the outer peripheral face butt of drive wheel to make through rotating the drive wheel and connect the face and promote driven part and rotate, thereby drive presser foot component and do and lift the presser foot motion, the utility model discloses a lift the problem of the inconvenient regulation of height that the presser foot among the prior art promoted has been solved to the presser foot structure.

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. When the existing sewing machine sews, the sewing action of the sewing machine needs to be driven by lifting the presser foot structure.

However, the conventional sewing machine adopts an electromagnet to drive the presser foot lifting structure, the lifting height of the presser foot is fixed, and the noise is large in the presser foot laying process.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a lift presser foot structure and have its sewing machine to solve the problem of the inconvenient regulation of height that the presser foot among the prior art promoted.

In order to achieve the above object, according to an aspect of the present invention, there is provided a presser foot lifting structure, including: the driving motor is connected with the sewing machine body, and an output shaft of the driving motor is provided with a driving wheel; the driving wheel is a cam mechanism; the driven part is rotatably arranged on the sewing machine body; the driven member has a connecting surface for abutting against the outer peripheral surface of the driving wheel, so that the connecting surface pushes the driven member to rotate by rotating the driving wheel, thereby driving the presser foot pressing member to perform presser foot lifting motion.

Further, the driven member includes: the first connecting hole is used for penetrating through a first connecting piece so as to relatively and rotatably connect the driven part with the sewing machine through the connecting piece; the first connecting part is arranged on the connecting surface; and the second connecting part is used for being connected with the foot pressing part.

Further, lift presser foot structure still includes the pull rod, and the one end and the relative rotationally connected of second connecting portion of pull rod, the other end of pull rod are used for being connected with presser foot spare to drive the motion of presser foot spare through rotating the pull rod.

Furthermore, a second connecting hole used for being connected with the pull rod is formed in the second connecting part;

the first connecting hole and the second connecting hole are circular through holes, the axis of the first connecting hole and the axis of the second connecting hole are arranged in parallel, and the angle between the plane where the axis of the first connecting hole and the axis of the second connecting hole are located and the connecting surface is smaller than or equal to 180 degrees.

Furthermore, the presser foot lifting structure further comprises a lifting rod, the lifting rod is relatively rotatably connected with the sewing machine body, the lifting rod is connected with one end, far away from the driven part, of the pull rod, so that the lifting rod is driven by the driven part to rotate, and the lifting rod is used for driving the presser foot part to move.

Furthermore, the presser foot lifting structure further comprises a presser foot guide rod, the presser foot guide rod is connected with the lifting rod, and the presser foot part is arranged on the presser foot guide rod.

Further, lift presser foot structure still includes the depression bar guide frame, and the depression bar guide frame cover is established on the presser foot guide arm, and the cover is equipped with the elastic component on the presser foot guide arm, and the one end and the depression bar guide frame of elastic component are connected, and the other end of elastic component is connected with the pressure adjustment pole, and the distance between pressure adjustment pole and the depression bar guide frame sets up adjustably, and the depression bar guide frame is connected with the lift bar.

Further, the driving wheel comprises a first driving surface and a second driving surface, the first driving surface is a curved surface and is used for being connected with the driven part, the second driving surface is connected with the first driving surface, and the second driving surface is a plane.

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.

Further, sewing machine's organism includes first organism and second organism, and first organism and second organism set up with looks interval, and driven part sets up between first organism and second organism, and one side that the second organism was kept away from to first organism is provided with the driving motor who is used for driving the drive wheel.

By applying the technical scheme of the utility model, the presser foot lifting structure of the utility model comprises a driving motor, the driving motor is connected with the body of the sewing machine, and the output shaft of the driving motor is provided with a driving wheel; the driving wheel is a cam mechanism; the driven part is rotatably arranged on the machine body of the sewing machine; the driven component is provided with a connecting surface which is used for being abutted against the peripheral surface of the driving wheel, so that the connecting surface pushes the driven component to rotate by rotating the driving wheel, and the pressure foot component is driven to do pressure foot lifting motion. The presser foot structure is lifted in the drive of step-by-step eccentric cam structure to the aforesaid setting, can control and set for required presser foot height of lifting, makes its height that satisfies actual demand in the operating mode completely to lifting efficiency also can control the speed that the presser foot put down, thereby has reduced the noise when the presser foot puts down, has solved the inconvenient problem of adjusting of the height that the presser foot promoted among the prior art.

Drawings

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

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

FIG. 2 is a schematic view of another view of the embodiment of the sewing machine of the present invention;

fig. 3 is a schematic view illustrating a view angle of the pressure raising and pressing foot structure of the present invention;

fig. 4 shows a schematic structural view of another view angle of the lifting and pressing foot structure of the present invention.

Wherein the figures include the following reference numerals:

10. a body; 101. a first body; 102. a second body; 20. a presser foot member; 30. a pressure rod sleeve; 40. a needle plate;

1. a drive wheel; 11. a first drive face; 12. a second drive face; 2. a driven member; 21. a connection face; 22. a first connection hole; 23. a first connection portion; 24. a second connecting portion; 241. a second connection hole; 4. a drive motor; 5. a pull rod; 6. a lifting lever; 63. a third connecting hole; 7. a presser foot guide bar; 71. a pressure regulating rod; 8. a compression bar guide frame; 9. an elastic member.

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 accompanying drawings in conjunction with embodiments.

Referring to fig. 1 to 4, the presser foot lifting structure of the present embodiment includes: the driving motor 4, the driving motor 4 is connected with organism 10 of the Sewing machines, there are driving wheels 1 on the output shaft of the driving motor 4; the driving wheel 1 is a cam mechanism; a driven member 2, the driven member 2 is rotatably arranged on the machine body 10 of the sewing machine; the driven member 2 has a connecting surface 21 for abutting against the outer peripheral surface of the driving wheel 1, and the driving wheel 1 is rotated to rotate the connecting surface 21 to push the driven member 2 to rotate, thereby driving the presser foot member 20 to perform the presser foot lifting motion. The presser foot structure is lifted in the drive of step-by-step eccentric cam structure to the aforesaid setting, can control and set for required presser foot height of lifting, makes its height that satisfies actual demand in the operating mode completely to lifting efficiency also can control the speed that the presser foot put down, thereby has reduced the noise when the presser foot puts down, has solved the inconvenient problem of adjusting of the height that the presser foot promoted among the prior art.

In the presser foot lifting structure of the present embodiment, referring to fig. 1 to 4, the driven member 2 includes: a first connection hole 22, the first connection hole 22 being used for penetrating a first connection member so as to relatively rotatably connect the driven part 2 with the sewing machine through the connection member; a first connection portion 23 on which the connection face 21 is provided; a second connecting portion 24, the second connecting portion 24 being for connection with the foot presser member 20.

With the above arrangement, the driven member 2 is hinged with the housing of the sewing machine through the first connecting hole 22 so that the driven member 2 can swing along the hole axis.

Referring to fig. 1 to 4, in the pressure foot lifting structure of the present embodiment, the pressure foot lifting structure further includes a pull rod 5, one end of the pull rod 5 is relatively rotatably connected to the second connecting portion 24, and the other end of the pull rod 5 is used for being connected to the pressure foot part 20, so as to drive the pressure foot part 20 to move by rotating the pull rod 5.

In the presser foot lifting structure of the present embodiment, referring to fig. 1 to 4, the second connecting portion 24 is provided with a second connecting hole 241 for connecting with the pull rod 5; the first connecting hole 22 and the second connecting hole 241 are circular through holes, the axis of the first connecting hole 22 and the axis of the second connecting hole 241 are arranged in parallel, and the angle between the plane where the axis of the first connecting hole 22 and the axis of the second connecting hole 241 are located and the connecting surface 21 is smaller than or equal to 180 degrees. By adopting the arrangement, the transmission efficiency of the driven part 2 can be effectively ensured.

Referring to fig. 1 to 4, in the presser foot lifting structure of the present embodiment, the presser foot lifting structure further includes a lifting rod 6, the lifting rod 6 is relatively rotatably connected to a body 10 of the sewing machine, the lifting rod 6 is connected to an end of the pull rod 5 away from the driven member 2, so as to drive the lifting rod 6 to rotate through the driven member 2, and the lifting rod 6 is used for driving the presser foot member 20 to move.

In the presser foot lifting structure of the present embodiment, referring to fig. 1 to 4, the presser foot lifting structure further includes a presser foot guide 7, the presser foot guide 7 is connected to the lifting rod 6, and the presser foot member 20 is disposed on the presser foot guide 7.

Referring to fig. 1 to 4, in the presser foot lifting structure of this embodiment, the presser foot lifting structure further includes a pressure lever guide 8, the pressure lever guide 8 is sleeved on the presser foot guide rod 7, an elastic member 9 is sleeved on the presser foot guide rod 7, one end of the elastic member 9 is connected with the pressure lever guide 8, the other end of the elastic member 9 is connected with a pressure adjusting rod 71, a distance between the pressure adjusting rod 71 and the pressure lever guide 8 is adjustably set, and the pressure lever guide 8 is connected with the lifting rod 6.

In the presser foot lifting structure of the present embodiment, referring to fig. 1 to 4, the driving wheel 1 includes a first driving surface 11 and a second driving surface 12, the first driving surface 11 is a curved surface, the first driving surface 11 is used for connecting with the driven member 2, the second driving surface 12 is connected with the first driving surface 11, and the second driving surface 12 is a flat surface.

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

In the sewing machine of the embodiment, the machine body 10 of the sewing machine includes a first machine body 101 and a second machine body 102, the first machine body 101 and the second machine body 102 are arranged at intervals, the driven part 2 is arranged between the first machine body 101 and the second machine body 102, and a driving motor 4 for driving the driving wheel 1 is arranged on one side of the first machine body 101 away from the second machine body 102.

In some embodiments, the sewing machine further comprises a presser bar housing 60, and the presser bar guide 7 moves up and down through the presser bar housing 60, so that the presser bar lifting action is more stable.

The working principle of the presser foot lifting structure of the embodiment is as follows:

a driving motor 4 (here, a stepping motor is selected) is fixed on the machine body 10, and a driving wheel 1 is fixed on a motor rotating shaft of the driving motor 4; one end of the driven part 2 is abutted against the cam surface (i.e. the connecting surface 21) of the driving wheel 1, and the other end of the driven part 2 is hinged with one end of the presser foot guide rod 7.

When the driven member 2 rotates along with the stepping motor, the driven member 2 is jacked up by the driving wheel 1 to swing along the axis of the first connecting hole 22, so that the presser foot guide rod 7 is driven to move.

The other end of presser foot guide arm 7 articulates on lift bar 6, and lift bar 6 articulates on the casing through third connecting hole 63 (makes lift bar 6 can follow the swing of hole axis), and the lift bar 6 other end supports and leans on depression bar guide frame 8, can be with depression bar guide frame 8 jack-up when lift bar 6 swings, and depression bar guide frame 8 is fixed on presser foot guide arm 7 simultaneously.

When the stepping motor is powered on, the motor shaft rotates to drive the presser foot driving wheel 1 to rotate, so as to drive the driven part 2 to swing, so that the pull rod 5 also moves along with the pull rod, and the lifting rod 6 is driven to swing, the presser foot lifting rod overcomes the spring pressure to jack the presser foot rod fixedly connected with the pressure rod guide frame 8, and the presser foot rod vertically moves upwards along the axial direction of the presser foot rod, so that the presser foot is lifted from the needle plate 40.

When the presser foot needs to be put down, the motor rotates reversely, and the presser foot is put down under the pressure action of the pressure rod spring.

In the process of the presser foot is transferred, the driving wheel 1 and the driven part 2 are always abutted together under the action of the elastic part 9, so that the speed of the presser foot being put down can be controlled, and the noise of the presser foot being transferred is reduced.

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 driving motor 4, the driving motor 4 is connected with a sewing machine body 10, and a driving wheel 1 is arranged on an output shaft of the driving motor 4; the driving wheel 1 is a cam mechanism; a driven member 2, the driven member 2 is rotatably arranged on the machine body 10 of the sewing machine; the driven member 2 has a connecting surface 21 for abutting against the outer peripheral surface of the driving wheel 1, and the driving wheel 1 is rotated to rotate the connecting surface 21 to push the driven member 2 to rotate, thereby driving the presser foot member 20 to perform the presser foot lifting motion. The presser foot structure is lifted in the step-by-step eccentric cam structure drive of having adopted in the aforesaid setting, can control to set for required presser foot height of lifting, makes its height that satisfies actual demand in the use operating mode completely to raise the efficiency, also can control the speed that the presser foot put down, thereby reduced the noise when the presser foot puts down, solved the inconvenient problem of adjusting of the height that the presser foot promoted among the prior art.

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 exemplary 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 one 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, it need not be discussed further 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 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial 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 terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". 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, so that the scope 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 (10)

1. A presser foot lifting structure, comprising:

the sewing machine comprises a driving motor (4), wherein the driving motor (4) is connected with a machine body (10) of the sewing machine, and an output shaft of the driving motor (4) is provided with a driving wheel (1); the driving wheel (1) is a cam mechanism;

a driven member (2), wherein the driven member (2) is rotatably arranged on a machine body (10) of the sewing machine; the driven part (2) is provided with a connecting surface (21) which is used for being abutted against the peripheral surface of the driving wheel (1), so that the connecting surface (21) pushes the driven part (2) to rotate by rotating the driving wheel (1), and the foot pressing part (20) of the sewing machine is driven to do foot lifting motion.

2. The lift and presser foot structure according to claim 1, wherein the driven member (2) comprises:

a first connection hole (22), wherein the first connection hole (22) is used for penetrating a first connection piece so as to relatively and rotatably connect the driven part (2) and the sewing machine through the connection piece;

a first connection portion (23), the connection face (21) being provided on the first connection portion (23);

a second connection portion (24), the second connection portion (24) being for connection with the presser foot member (20).

3. The presser foot lifting structure according to claim 2, further comprising a pull rod (5), wherein one end of the pull rod (5) is relatively rotatably connected with the second connecting portion (24), and the other end of the pull rod (5) is used for being connected with the presser foot component (20) so as to drive the presser foot component (20) to move by rotating the pull rod (5).

4. The lift and presser foot structure according to claim 3, wherein a second connecting hole (241) for connecting with the pull rod (5) is provided on the second connecting portion (24);

the first connecting hole (22) and the second connecting hole (241) are circular through holes, the axis of the first connecting hole (22) and the axis of the second connecting hole (241) are arranged in parallel, and the angle of an included angle between the plane where the axis of the first connecting hole (22) and the axis of the second connecting hole (241) are located and the connecting face (21) is smaller than or equal to 180 degrees.

5. The presser foot lifting structure according to claim 3, further comprising a lifting rod (6), wherein the lifting rod (6) is relatively rotatably connected with the machine body (10) of the sewing machine, the lifting rod (6) is connected with one end of the pull rod (5) far away from the driven member (2) so as to drive the lifting rod (6) to rotate through the driven member (2), and the lifting rod (6) is used for driving the presser foot member (20) to move.

6. The presser foot lifting structure according to claim 5, further comprising a presser foot guide (7), the presser foot guide (7) being connected with the lifting bar (6), the presser foot member (20) being provided on the presser foot guide (7).

7. The presser foot lifting structure according to claim 6, further comprising a presser bar guide frame (8), wherein the presser bar guide frame (8) is sleeved on the presser bar guide rod (7), an elastic member (9) is sleeved on the presser bar guide rod (7), one end of the elastic member (9) is connected with the presser bar guide frame (8), the other end of the elastic member (9) is connected with a pressure adjusting rod (71), the distance between the pressure adjusting rod (71) and the presser bar guide frame (8) is adjustably set, and the presser bar guide frame (8) is connected with the lifting rod (6).

8. Presser foot lifting arrangement according to claim 1, wherein the drive wheel (1) comprises a first drive surface (11) and a second drive surface (12), the first drive surface (11) being curved, the first drive surface (11) being adapted for connection with the driven member (2), the second drive surface (12) being connected with the first drive surface (11), the second drive surface (12) being planar.

9. 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 8.

10. Sewing machine as in claim 9, characterized in that said machine body (10) comprises a first body (101) and a second body (102), said first body (101) and said second body (102) being arranged at a distance, said driven member (2) being arranged between said first body (101) and said second body (102), the side of said first body (101) remote from said second body (102) being provided with a drive motor (4) for driving said drive wheel (1).

Images