CN217869411U - Control structure and sewing machine with same - Google Patents

Abstract

The utility model provides a control structure and a sewing machine with the same, wherein the control structure comprises a driving motor, and an output shaft of the driving motor is connected with a driving shaft; the ejector rod is connected with the driving shaft; the ejector rod is movably arranged; the connecting rod assembly comprises a pressure foot lifting connecting rod which is used for contacting with the ejector rod; the presser foot lifting connecting rod is rotatably arranged; the presser foot lifting connecting rod is used for driving a presser foot component of the sewing machine to move; the gauge needle structure, gauge needle structure and drive shaft connection, the gauge needle structure is including the gauge needle crank that is used for controlling sewing machine's eedle to remove, the utility model discloses a control structure has solved the problem that sewing machine's among the prior art structure is complicated.

Description

Control structure and sewing machine with same

Technical Field

The utility model relates to a sewing machine field particularly, relates to a control 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 position of a needle needs to be adjusted to adjust the distance between the needle and a fabric, thereby achieving the required sewing effect;

however, the needle adjusting structure of the existing sewing machine needs to be provided with a driving structure for driving, and the volume of the driving structure is usually larger, so that the structure of the sewing machine is more complicated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a control structure and have its sewing machine to solve the problem that sewing machine's among the prior art structure is complicated.

In order to achieve the above object, according to an aspect of the present invention, there is provided a control structure including: the output shaft of the driving motor is connected with a driving shaft; the ejector rod is connected with the driving shaft; the ejector rod is movably arranged; the connecting rod assembly comprises a pressure foot lifting connecting rod which is used for contacting with the ejector rod; the presser foot lifting connecting rod is rotatably arranged; the presser foot lifting connecting rod is used for driving a presser foot component of the sewing machine to move; a stitch length structure connected to the drive shaft, the stitch length structure including a stitch length crank for controlling movement of a needle of the sewing machine.

Further, the gauge structure includes an eccentric wheel assembly, the eccentric wheel assembly including: the eccentric wheel body is sleeved on the driving shaft; the eccentric connecting rod is connected with the eccentric wheel body, and one end of the eccentric connecting rod, which is far away from the eccentric wheel body, is relatively and rotatably connected with the needle pitch crank.

Furthermore, the control structure further comprises a pressure lifting foot crank, the pressure lifting foot crank is arranged on an output shaft of the driving motor, and the pressure lifting foot crank is located on one side, far away from the driving motor, of the eccentric wheel component.

Further, the presser foot lifting crank comprises: the connecting part is sleeved on the driving shaft; 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, control structure includes the support, and 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.

Furthermore, a top rod joint is arranged on the top rod, and a top joint surface used for contacting with the pressure foot lifting connecting rod 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 number of the guide plates is two, a support sleeve is arranged between the two guide plates, and the ejector rod is arranged in the support sleeve in a penetrating mode.

Further, the connecting rod assembly includes: the knee control rear lever is rotatably connected with the sewing machine body and is connected with the presser foot lifting connecting rod; the knee control front lever is relatively rotatably connected with the sewing machine body and is connected with the presser foot component; one end of the pull rod is relatively and rotatably connected with the knee control front lever, and the other end of the pull rod is relatively and rotatably connected with the presser foot lifting connecting rod, so that the presser foot lifting connecting rod drives the knee control front lever to rotate through the pull rod.

Furthermore, the knee control rear lever is hinged with the presser foot lifting connecting rod; or the knee-controlled rear lever is provided with a connecting groove, the presser foot lifting connecting rod is provided with a connecting block, and the connecting block is arranged in the connecting groove in a sliding manner.

According to another aspect of the utility model, a sewing machine is provided, including control structure, control structure is foretell control structure.

By applying the technical scheme of the utility model, the control structure comprises a driving motor, and the output shaft of the driving motor is connected with a driving shaft; the ejector rod is connected with the driving shaft; the ejector rod is movably arranged; the connecting rod assembly comprises a pressure foot lifting connecting rod which is used for contacting with the ejector rod; the presser foot lifting connecting rod is rotatably arranged; the presser foot lifting connecting rod is used for driving a presser foot component of the sewing machine to move; a stitch length structure connected to the drive shaft, the stitch length structure including a stitch length crank for controlling movement of a needle of the sewing machine. By adopting the arrangement, the control structure and the needle adjusting structure of the sewing machine are simultaneously connected with the output shaft of the driving motor, so that the control structure and the needle adjusting structure are simultaneously driven by one motor to act, the occupied space of the equipment is reduced, and the problem of complex 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 diagram of an embodiment of a control structure according to the present invention;

fig. 2 shows a schematic structural diagram of another embodiment of the control structure of the present invention.

Wherein the figures include the following reference numerals:

100. a connecting rod assembly; 300. a stitch length structure; 1. a drive motor; 101. a drive shaft; 2. an eccentric wheel component; 21. an eccentric wheel body; 22. an eccentric link; 3. lifting a presser foot crank; 31. a connecting portion; 32. a connecting rod; 4. a needle pitch crank; 5. a top rod; 6. a support; 61. a guide plate; 7. a bracket sleeve; 8. a top rod joint; 9. an elastic member; 10. lifting a presser foot connecting rod; 11. a knee-controlled rear lever; 12. a pull rod; 13. a knee-controlled front lever; 14. a presser foot assembly; 15. and (4) connecting the blocks.

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 and 2, the control structure of the present embodiment includes a driving motor 1, and a driving shaft 101 is connected to an output shaft of the driving motor 1; the ejector rod 5, the ejector rod 5 is connected with the driving shaft 101; the mandril 5 can be movably arranged; the connecting rod assembly 100, the connecting rod assembly 100 includes a pressure foot lifting connecting rod 10, the pressure foot lifting connecting rod 10 is used for contacting with the mandril 5; the presser foot lifting connecting rod 10 is rotatably arranged; the presser foot lifting connecting rod 10 is used for driving a presser foot component 14 of the sewing machine to move; a needle pitch structure 300, the needle pitch structure 300 being connected to the drive shaft 101, the needle pitch structure 300 comprising a needle pitch crank 4 for controlling the movement of a needle of a sewing machine. By adopting the arrangement, the control structure and the needle adjusting structure of the sewing machine are simultaneously connected with the output shaft of the driving motor 1, so that the control structure and the needle adjusting structure are simultaneously driven by one motor to act, the occupied space of the equipment is reduced, and the problem of complex structure of the sewing machine in the prior art is solved.

In the control structure of the present embodiment, referring to fig. 1 and 2, the pitch structure 300 includes an eccentric wheel part 2, and the eccentric wheel part 2 includes: the eccentric wheel body 21 is sleeved on the driving shaft 101; the eccentric connecting rod 22, the eccentric connecting rod 22 is connected with the eccentric wheel body 21, and one end of the eccentric connecting rod 22 far away from the eccentric wheel body 21 is relatively and rotatably connected with the needle pitch crank 4.

Referring to fig. 1 and fig. 2, in the control structure of the present embodiment, the control structure further includes a pressure raising and pressing crank 3, the pressure raising and pressing crank 3 is disposed on the output shaft of the driving motor 1, and the pressure raising and pressing crank 3 is located on a side of the eccentric wheel component 2 away from the driving motor 1.

In the control structure of the present embodiment, referring to fig. 1 and 2, the presser foot lifting crank 3 includes: the connecting part 31, the connecting part 31 is sleeved on the driving shaft 101; and the connecting rod 32, the connecting rod 32 is connected with the connecting part 31, and the connecting rod 32 is provided with a connecting surface used for contacting with the push rod 5 so as to drive the push rod 5 to move by driving the connecting rod 32 to rotate.

Referring to fig. 1 and 2, in the control structure of the present embodiment, the control structure includes a bracket 6, the bracket 6 is connected to a body of the sewing machine, the bracket 6 includes a guide plate 61, and the push rod 5 is inserted into the guide plate 61.

In the control structure of the embodiment, referring to fig. 1 and 2, a top rod joint 8 is arranged on a top rod 5, and a top contact surface for contacting with a pressure foot lifting connecting rod 10 is arranged on the top rod joint 8; an elastic part 9 is arranged between the ejector rod joint 8 and the guide plate 61, one end of the elastic part 9 is connected with the ejector rod joint 8, and the other end of the elastic part 9 is connected with the guide plate 61.

Referring to fig. 1 and 2, in the control structure of the present embodiment, there are two guide plates 61, a support sleeve 7 is disposed between the two guide plates 61, and the push rod 5 is inserted into the support sleeve 7.

In the control structure of the present embodiment, referring to fig. 1 and 2, the link assembly 100 includes: the knee control rear lever 11, the knee control rear lever 11 is rotatably connected with the body of the sewing machine, the knee control rear lever 11 is connected with the presser foot lifting connecting rod 10; the knee control front lever 13 is relatively rotatably connected with the body of the sewing machine, and the knee control front lever 13 is connected with the presser foot component 14; one end of the pull rod 12 is relatively rotatably connected with the knee control front lever 13, and the other end of the pull rod 12 is relatively rotatably connected with the pressure foot lifting connecting rod 10, so that the pressure foot lifting connecting rod 10 drives the knee control front lever 13 to rotate through the pull rod 12.

Referring to fig. 1 and 2, in the control structure of the present embodiment, a knee control rear lever 11 is hinged to a pressure raising and pressing foot connecting rod 10; or, a connecting groove is arranged on the knee-controlled rear lever 11, a connecting block 15 is arranged on the presser foot lifting connecting rod 10, and the connecting block 15 is slidably arranged in the connecting groove.

The sewing machine of the embodiment comprises a control structure, and the control structure is the control structure.

The sewing machine of the present embodiment is explained as follows:

a driving motor 1 of the control structure is fixed on the machine body, and an eccentric wheel component 2 and a presser foot lifting crank 3 are connected to a shaft of the driving motor 1.

The eccentric wheel component 2 is connected with the needle pitch crank 4 through a pin, and an output shaft of the driving motor 1 rotates to drive the needle pitch crank 4 to swing up and down to control the change of the needle pitch.

The pressure raising and pressing foot crank 3 is fixed on a motor shaft and separated from the ejector rod 5, and when the driving motor 1 rotates, an inclined plane on the pressure raising and pressing foot crank 3 is in contact with the ejector rod 5 and pushes the ejector rod 5 to move upwards.

The bracket 6 is provided with a bracket sleeve 7, and the bracket 6 is fixed on the machine body. One end of the mandril 5 is connected with a mandril joint 8 and is tightened by a nut. The ram 5 penetrates into the bracket 6. And moves up and down along the bracket sleeve. One end of the mandril joint 8 is contacted with a pressure foot lifting connecting rod 10. When the push rod 5 moves upwards, the pressure foot lifting connecting rod 10 is driven to rotate upwards. One end of the pressure raising and pressing foot connecting rod 10 is hinged on the machine body through a screw. The other end is provided with a connecting block 15, and the connecting block 15 is placed in the waist groove of the knee-controlled rear lever 11 to slide. The knee-controlled rear lever 11 rotates to drive the presser foot assembly 14 to move up and down through the connecting rod.

An elastic piece 9 (a spring is selected here) is arranged below the mandril joint 8, and the mandril 5 plays a role in buffering in the up-and-down movement return process.

The driving motor 1 drives the needle pitch and lifts the presser foot. The positioning mode of the eccentric wheel and the positioning position of the presser foot lifting crank 3 have certain position difference, and when the driving motor 1 controls the needle pitch to change, the presser foot lifting crank 3 rotates and is not contacted with the ejector rod 5. The two movements are combined and separated from each other.

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

the control structure of the utility model comprises a driving motor 1, and a driving shaft 101 is connected on the output shaft of the driving motor 1; the ejector rod 5, the ejector rod 5 is connected with the driving shaft 101; the mandril 5 can be movably arranged; the connecting rod assembly 100, the connecting rod assembly 100 includes a pressure foot lifting connecting rod 10, the pressure foot lifting connecting rod 10 is used for contacting with the mandril 5; the presser foot lifting connecting rod 10 is rotatably arranged; the presser foot lifting connecting rod 10 is used for driving a presser foot assembly 14 of the sewing machine to move; a needle pitch structure 300, the needle pitch structure 300 being connected to the drive shaft 101, the needle pitch structure 300 comprising a needle pitch crank 4 for controlling the movement of a needle of a sewing machine. By adopting the arrangement, the control structure and the needle adjusting structure of the sewing machine are simultaneously connected with the output shaft of the driving motor 1, so that the control structure and the needle adjusting structure are driven by one motor simultaneously, the occupied space of the equipment is reduced, and the problem of complex 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 8230," "upper surface," "above," and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as illustrated 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 control structure, comprising:

the device comprises a driving motor (1), wherein a driving shaft (101) is connected to an output shaft of the driving motor (1);

the ejector rod (5), the said ejector rod (5) is connected with said drive shaft (101); the ejector rod (5) is movably arranged;

the connecting rod assembly (100), wherein the connecting rod assembly (100) comprises a pressure raising and pressing foot connecting rod (10), and the pressure raising and pressing foot connecting rod (10) is used for being in contact with the ejector rod (5); the presser foot lifting connecting rod (10) is rotatably arranged; the presser foot lifting connecting rod (10) is used for driving a presser foot component (14) of the sewing machine to move;

a gauge structure (300), the gauge structure (300) being connected with the drive shaft (101), the gauge structure (300) comprising a gauge crank (4) for controlling movement of a needle of the sewing machine.

2. The control structure according to claim 1, characterized in that said needle pitch structure (300) comprises an eccentric member (2), said eccentric member (2) comprising:

the eccentric wheel body (21), the eccentric wheel body (21) is sleeved on the driving shaft (101);

the eccentric connecting rod (22), the eccentric connecting rod (22) with eccentric wheel body (21) is connected, the one end that eccentric connecting rod (22) is kept away from eccentric wheel body (21) with gauge needle crank (4) is connected rotatably relatively.

3. The control arrangement according to claim 2, characterized in that the control arrangement further comprises a presser foot lifting crank (3), the presser foot lifting crank (3) being arranged on the output shaft of the drive motor (1), the presser foot lifting crank (3) being located on the side of the eccentric member (2) remote from the drive motor (1).

4. Control arrangement according to claim 3, characterized in that the presser foot lifting crank (3) comprises:

the connecting part (31), the connecting part (31) is sleeved on the driving shaft (101);

connecting rod (32), connecting rod (32) with connecting portion (31) are connected, connecting rod (32) have be used for with the connection face of ejector pin (5) contact, with through the drive connecting rod (32) rotate, drive ejector pin (5) remove.

5. Control structure as claimed in claim 1, characterized in that it comprises a bracket (6), said bracket (6) being connected to the body of a sewing machine, said bracket (6) comprising a guide plate (61), said presser bar (5) being inserted in said guide plate (61).

6. The control structure according to claim 5, characterized in that a top rod joint (8) is arranged on the top rod (5), and a top contact surface for contacting with the pressure foot lifting connecting rod (10) is arranged on the top rod joint (8); an elastic part (9) is arranged between the ejector rod joint (8) and the guide plate (61), one end of the elastic part (9) is connected with the ejector rod joint (8), and the other end of the elastic part (9) is connected with the guide plate (61).

7. The control structure according to claim 5, characterized in that the number of the guide plates (61) is two, a support sleeve (7) is arranged between the two guide plates (61), and the ejector rod (5) is arranged in the support sleeve (7) in a penetrating manner.

8. The control structure according to claim 1, characterized in that said connecting-rod assembly (100) comprises:

the knee-controlled rear lever (11) is rotatably connected with the sewing machine body, and the knee-controlled rear lever (11) is connected with the presser foot lifting connecting rod (10);

the knee control front lever (13) is relatively rotatably connected with the body of the sewing machine, and the knee control front lever (13) is connected with the presser foot assembly (14);

one end of the pull rod (12) is relatively and rotatably connected with the knee-control front lever (13), and the other end of the pull rod (12) is relatively and rotatably connected with the pressure raising and pressing foot connecting rod (10), so that the pressure raising and pressing foot connecting rod (10) drives the knee-control front lever (13) to rotate through the pull rod (12).

9. The control structure of claim 8,

the knee-controlled rear lever (11) is hinged with the presser foot lifting connecting rod (10); or,

a connecting groove is formed in the knee-controlled rear lever (11), a connecting block (15) is arranged on the pressure raising and pressing foot connecting rod (10), and the connecting block (15) is arranged in the connecting groove in a sliding mode.

10. A sewing machine comprising a control structure, characterized in that it is a control structure according to any one of claims 1 to 9.

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