CN111945306B - Hidden driving structure of crank arm sewing machine presser foot lifting device - Google Patents
Hidden driving structure of crank arm sewing machine presser foot lifting device Download PDFInfo
- Publication number
- CN111945306B CN111945306B CN201910412874.0A CN201910412874A CN111945306B CN 111945306 B CN111945306 B CN 111945306B CN 201910412874 A CN201910412874 A CN 201910412874A CN 111945306 B CN111945306 B CN 111945306B
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- crank arm
- sewing machine
- driving
- lifting device
- cloth pressing
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The utility model provides a crank arm sewing machine presser foot lifting device's hidden type drive structure, includes: a containing cavity arranged inwards from the side surface of the crank arm of the sewing machine; the driving device is arranged in the accommodating hole and comprises a driving rod, so that the driving rod can extend out of the side surface of the crank arm, and the stroke range of the driving rod does not exceed the upper part of the end surface of the top end of the crank arm; and a connecting rod group which is composed of a plurality of connecting rods and is arranged between the cloth pressing foot of the sewing machine and the stroke of the driving rod, wherein the first end of the connecting rod group is driven by the driving rod, so that the second end of the connecting rod group is linked with the cloth pressing foot to move up and down.
Description
Technical Field
The invention relates to a hidden driving structure of a cloth pressing foot lifting device of a crank arm sewing machine.
Background
The crank arm sewing machine has one crank arm, one main machine and one sewing platform suspended from the crank arm, one driving motor for the operator to feed cloth from the front of the main machine, and one cloth pressing foot lifted upwards and one driving motor for the operator to withdraw the sewing material.
As shown in fig. 1, the current crank-type sewing machine, which is commonly equipped with a cloth presser lifting device including a driving unit 130 connected to a driving mechanism 140 between the driving unit 130 and the cloth presser 160, is generally provided with a cloth presser lifting device for facilitating sewing operations, and driven by the driving unit 130 to lift an electromagnet 131 to lift the cloth presser 160 in a linkage manner. In the above structure, the driving unit 130 is vertically embedded from above the machine table 120, and the electromagnet 131 can push the driving mechanism 140 horizontally disposed above the machine table 120 upwards, and most operators operating the sewing machine are usually right-handed, so when the operator extends the right arm a to turn the rotating shaft 111 of the driving unit 130, the arm a must pass over the driving unit 130, the electromagnet 131 and the driving mechanism 140 exposed at the top end of the crank arm to turn the rotating shaft 111 of the driving unit 130, and therefore the arm a of the operator contacts with the driving unit 130 and the driving mechanism 140, which is easy to cause accidents such as cutting injury of the operator, and the exposed type also affects the smoothness of the operation of the operator.
Disclosure of Invention
The invention aims to provide a hidden driving structure of a crank arm sewing machine cloth pressing foot lifting device, which comprises: a containing cavity arranged inwards from the side surface of the crank arm of the sewing machine; the driving device is arranged in the accommodating hole and comprises a driving rod, so that the driving rod can extend out of the side surface of the crank arm, and the stroke range of the driving rod does not exceed the upper part of the end surface of the top end of the crank arm; and a connecting rod group which is composed of a plurality of connecting rods and is arranged between the cloth pressing foot of the sewing machine and the stroke of the driving rod, wherein the first end of the connecting rod group is driven by the driving rod, so that the second end of the connecting rod group is linked with the cloth pressing foot to move up and down.
The invention discloses a hidden driving structure of a cloth pressing foot lifting device of a crank arm sewing machine, wherein a containing hole is horizontally arranged in a crank arm.
The invention discloses a hidden driving structure of a cloth pressing foot lifting device of a crank arm sewing machine, wherein a fixed seat is formed at one end of a crank arm and is used for being fixed on a fixed object, and an accommodating hole is vertically projected in the range of the fixed seat. The gravity center of the driving device placed in the containing hole is enabled to fall within the range of the fixed seat, so that the crank arm of the sewing machine is prevented from being vibrated due to a bending moment.
The invention discloses a hidden driving structure of a cloth pressing foot lifting device of a crank arm sewing machine, wherein a connecting rod group comprises: the first rocker arm is pivoted on the fixed object and is provided with an actuating part, and the bottom end of the actuating part extends to the stroke of the driving rod so as to link the driving rod; the second rocker arm is pivoted on a fixed object, a shaft lever is lengthways connected and extended along the axis direction of the second rocker arm, and a shifting block is arranged at the tail end of the shaft lever and used for linking the cloth pressing foot to move up and down; a linkage pivotally connected between the first rocker arm and the second rocker arm.
The invention discloses a hidden driving structure of a cloth pressing foot lifting device of a crank arm sewing machine, wherein the driving device is an electromagnetic valve, a pneumatic cylinder or a hydraulic cylinder.
The invention discloses a hidden driving structure of a cloth pressing foot lifting device of a crank arm sewing machine, wherein an accommodating hole horizontally penetrates through a crank arm.
The invention discloses a hidden driving structure of a cloth pressing foot lifting device of a crank arm sewing machine, wherein a fixing hole is arranged on the periphery of a containing hole and used for locking and connecting a fixing plate so as to firmly fix a driving device in the containing hole.
Because the hidden driving structure of the cloth pressing foot lifting device of the crank arm sewing machine disclosed by the invention has no mechanical structure arranged right above the crank arm, and the top surface of the crank arm is a flat surface, an operator can directly straddle the arm above the crank arm to adjust the rotating shaft of the driving motor, thereby avoiding the injury of the operator and improving the smoothness of the operation of the operator.
Drawings
Fig. 1 is a schematic diagram of a cloth presser foot lifting device of an exposed crank arm sewing machine in the prior art.
Fig. 2 is a perspective view of a concealed driving structure of a cloth pressing foot lifting device of a crank arm sewing machine according to an embodiment of the present invention.
Fig. 3 is a partially exploded perspective view of the concealed driving structure of the cloth pressing foot lifting device of the crank arm sewing machine according to the embodiment of the present invention.
Fig. 4 is an exploded perspective view of fig. 3 from another perspective.
Fig. 5 is a perspective view of the assembled and fitted cloth pressing foot of fig. 3.
Fig. 6 is a front view of fig. 2.
FIG. 7 is a schematic diagram of another embodiment of the present invention.
Description of reference numerals:
10 side 10b tip end face of crank arm 10a
11 holding cavity 111 fixing hole 112 fixing plate
12 fixed seat 20 driving device 21 driving rod
30 linkage 30a first end 30b second end
31 first rocker arm 311 actuating part 32 second rocker arm
Connecting rod of shifting block 33 of shaft rod 321 322
40 cloth pressing foot W center of gravity
Detailed Description
Referring to fig. 2-6, the present invention is a hidden driving structure of a crank arm sewing machine presser foot lifting device, comprising: a receiving cavity 11 inwardly disposed from a side surface 10a of a crank arm 10 of the sewing machine; a driving device 20 is installed in the accommodating cavity 11, and the driving device 20 includes a driving rod 21, so that the driving rod 21 can extend out from the side surface 10a of the crank arm 10, and the stroke range of the driving rod 21 does not exceed the top end surface 10b of the crank arm 10, and a connecting rod group 30, which is composed of a plurality of connecting rods, and is installed between the cloth pressing foot 40 of the sewing machine and the stroke of the driving rod 21, and the first end 30a of the connecting rod group 30 acts on the driving rod 21, so that the second end 30b of the connecting rod group 30 is used for linking the cloth pressing foot 40 to move up and down.
As shown in fig. 2, 3 and 6, the concealed driving structure of the cloth pressing foot lifting device of the crank arm sewing machine disclosed by the invention is characterized in that the accommodating cavity 11 is horizontally arranged in the crank arm 10.
As shown in fig. 7, the concealed driving structure of the cloth pressing foot lifting device of the crank arm sewing machine disclosed in the present invention is configured such that a fixing seat 12 is formed at one end of the crank arm 10 for fixing on a fixed object such as a table top, and the accommodating cavity 11 is vertically projected within the range of the fixing seat 12. The gravity center W of the driving device 20 placed in the receiving cavity 11 is within the range of the fixing seat 12 to prevent the crank arm 10 of the sewing machine from vibrating due to a bending moment.
As shown in fig. 2, 3 and 4, the concealed driving structure of the cloth pressing foot lifting device of the crank arm sewing machine disclosed by the invention comprises a linkage 30: a first swing arm 31 pivotally mounted on the housing of the sewing machine, the first swing arm 31 having an actuating portion 311, the bottom end of the actuating portion 311 extending to the stroke of the driving rod 21 for linking the driving rod 21; the second rocker 32 is pivotally mounted on the housing of the sewing machine, a shaft 321 is lengthways extended along the axial center direction of the second rocker 32, and a shifting block 322 is arranged at the tail end of the shaft 321 for linking the cloth pressing foot 40 to move up and down; a link 33 is pivotally connected between the first rocker arm 31 and the second rocker arm 32.
The invention discloses a hidden driving structure of a cloth pressing foot lifting device of a crank arm sewing machine, wherein the driving device 20 refers to an electromagnetic valve or an air/hydraulic cylinder, and the invention is not limited by the invention.
As shown in fig. 2 and 3, the concealed driving structure of the cloth pressing foot lifting device of the crank arm sewing machine disclosed by the invention is characterized in that the accommodating cavity 11 horizontally penetrates through the crank arm 10; however, the present invention preferably makes the receiving cavity 11 be disposed in the crank arm 10 at an angle, and the present invention is not limited thereto.
As shown in fig. 4, the hidden driving structure of the cloth pressing foot lifting device of the crank arm sewing machine disclosed in the present invention is provided with a fixing hole 111 at the periphery of the accommodating cavity 11 for locking a fixing plate 112 to fix the driving device 20 in the accommodating cavity 11.
As shown in figure 1 or 7, because the hidden driving structure of the cloth pressing foot lifting device of the crank arm sewing machine disclosed by the invention has no mechanical structure arranged right above the top end surface 10b of the crank arm 10, the top end surface 10b of the crank arm 10 is a flat surface, an operator can directly straddle the arm above the crank arm to adjust the rotating shaft of the driving motor 20, and the operation smoothness can be improved besides avoiding the injury of the operator.
The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.
Claims (6)
1. The utility model provides a bent arm sewing machine presser foot lifting device's type drive structure that conceals which characterized in that includes:
a containing cavity which is arranged inwards from the side surface of the crank arm of the sewing machine and is horizontally arranged in the crank arm;
the driving device is arranged in the accommodating hole and comprises a driving rod, so that the driving rod can extend out of the side surface of the crank arm, and the stroke range of the driving rod does not exceed the end surface of the top end of the crank arm; and
and the connecting rod group consists of a plurality of connecting rods and is arranged between the cloth pressing foot of the sewing machine and the stroke of the driving rod, and the first end of the connecting rod group is driven by the driving rod so that the second end of the connecting rod group is linked with the cloth pressing foot to move up and down.
2. The concealed driving structure of the lifting device for the presser foot of a crank arm sewing machine as claimed in claim 1, wherein a fixing seat is formed at one end of the crank arm for fixing to a fixing object so that the accommodating cavity projects vertically within the range of the fixing seat.
3. The concealed driving structure of the cloth presser foot lifting device of crank arm sewing machine according to claim 1, wherein the linkage comprises: the first rocker arm is pivoted on the fixed object and is provided with an actuating part, and the bottom end of the actuating part extends to the stroke of the driving rod so as to link the driving rod; the second rocker arm is pivoted on a fixed object, a shaft lever is lengthways connected and extended along the axis direction of the second rocker arm, and a shifting block is arranged at the tail end of the shaft lever and used for linking the cloth pressing foot to move up and down; a linkage pivotally connected between the first and second rocker arms.
4. The concealed driving structure of the cloth pressing foot lifting device of the crank arm sewing machine according to claim 1, wherein the driving device is a solenoid valve or a pneumatic cylinder or a hydraulic cylinder.
5. The concealed driving structure of the lifting device for presser foot of crank arm sewing machine as claimed in claim 1, wherein the receiving cavity is horizontally formed through the crank arm.
6. The concealed driving structure of the cloth pressing foot lifting device of crank arm sewing machine as claimed in claim 1, wherein the periphery of the receiving cavity is provided with a fixing hole for locking a fixing plate to firmly fix the driving device in the receiving cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910412874.0A CN111945306B (en) | 2019-05-17 | 2019-05-17 | Hidden driving structure of crank arm sewing machine presser foot lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910412874.0A CN111945306B (en) | 2019-05-17 | 2019-05-17 | Hidden driving structure of crank arm sewing machine presser foot lifting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111945306A CN111945306A (en) | 2020-11-17 |
| CN111945306B true CN111945306B (en) | 2022-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910412874.0A Active CN111945306B (en) | 2019-05-17 | 2019-05-17 | Hidden driving structure of crank arm sewing machine presser foot lifting device |
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| CN (1) | CN111945306B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09299647A (en) * | 1996-05-14 | 1997-11-25 | Brother Ind Ltd | Belt loop feeding device for sewing machine |
| US6499415B1 (en) * | 2000-05-05 | 2002-12-31 | Sailrite Enterprises, Inc. | Zigzag sewing machine |
| TWM252719U (en) * | 2004-03-31 | 2004-12-11 | Shing Ray Sewing Machine Co Lt | Start control electromagnet device for sewing machine |
| TW200817549A (en) * | 2006-10-12 | 2008-04-16 | Ming Jang Sewing Machine Co Ltd | A drive structure for the presser of a sewing machine |
| CN101173427A (en) * | 2006-11-03 | 2008-05-07 | 名匠缝纫机股份有限公司 | Cloth pressing pin drive structure of sewing machine |
| CN102051769A (en) * | 2009-10-30 | 2011-05-11 | Juki株式会社 | Sewing machine |
| CN204803525U (en) * | 2012-10-31 | 2015-11-25 | 株式会社铃木制作所 | Sewing machine's presser foot elevating gear |
| CN205662686U (en) * | 2016-06-08 | 2016-10-26 | 北京金添仕制衣有限公司 | Double -stranded seam sewing machine of type of cranking arm and separated time part thereof |
| TWI585262B (en) * | 2015-12-25 | 2017-06-01 | Ming Jang Sewing Machine Co Ltd | Curved arm type sewing machine structure |
| CN206448028U (en) * | 2017-01-20 | 2017-08-29 | 名匠缝纫机股份有限公司 | The automatic range regulating device of cloth conveying teeth before and after the line sewing machine of four pin six |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210048935U (en) * | 2019-05-17 | 2020-02-11 | 精机机械厂股份有限公司 | Hidden driving structure of crank arm sewing machine presser foot lifting device |
-
2019
- 2019-05-17 CN CN201910412874.0A patent/CN111945306B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09299647A (en) * | 1996-05-14 | 1997-11-25 | Brother Ind Ltd | Belt loop feeding device for sewing machine |
| US6499415B1 (en) * | 2000-05-05 | 2002-12-31 | Sailrite Enterprises, Inc. | Zigzag sewing machine |
| TWM252719U (en) * | 2004-03-31 | 2004-12-11 | Shing Ray Sewing Machine Co Lt | Start control electromagnet device for sewing machine |
| TW200817549A (en) * | 2006-10-12 | 2008-04-16 | Ming Jang Sewing Machine Co Ltd | A drive structure for the presser of a sewing machine |
| CN101173427A (en) * | 2006-11-03 | 2008-05-07 | 名匠缝纫机股份有限公司 | Cloth pressing pin drive structure of sewing machine |
| CN102051769A (en) * | 2009-10-30 | 2011-05-11 | Juki株式会社 | Sewing machine |
| CN204803525U (en) * | 2012-10-31 | 2015-11-25 | 株式会社铃木制作所 | Sewing machine's presser foot elevating gear |
| TWI585262B (en) * | 2015-12-25 | 2017-06-01 | Ming Jang Sewing Machine Co Ltd | Curved arm type sewing machine structure |
| CN205662686U (en) * | 2016-06-08 | 2016-10-26 | 北京金添仕制衣有限公司 | Double -stranded seam sewing machine of type of cranking arm and separated time part thereof |
| CN206448028U (en) * | 2017-01-20 | 2017-08-29 | 名匠缝纫机股份有限公司 | The automatic range regulating device of cloth conveying teeth before and after the line sewing machine of four pin six |
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| Publication number | Publication date |
|---|---|
| CN111945306A (en) | 2020-11-17 |
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