CN204919000U - Sewing machine lifts presser foot device - Google Patents
Sewing machine lifts presser foot device Download PDFInfo
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- CN204919000U CN204919000U CN201520599194.1U CN201520599194U CN204919000U CN 204919000 U CN204919000 U CN 204919000U CN 201520599194 U CN201520599194 U CN 201520599194U CN 204919000 U CN204919000 U CN 204919000U
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- presser foot
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Abstract
The utility model discloses a sewing machine lifts presser foot device, including execute component, execute component can be around the axle swing, execute component's top expansion end is connected with the stiff end of one -way lever through first position of axle screw, and one -way lever can be around the swing of first position of axle screw, the presser foot subassembly is lifted through fan -shaped one end of lifting presser foot lever connection pull rod, the other end connection of pull rod to the free end of one -way lever, lift the presser foot subassembly and connect the presser foot, the fan -shaped first free end of lifting the presser foot lever is connected to the free end of one -way lever, and the fan -shaped stiff end of lifting the presser foot lever passes through second position of axle fix with screw in aircraft nose upper portion, and the fan -shaped second free end of lifting the presser foot lever passes through third position of axle screw connection the one end of pull rod. The utility model discloses can realize that automatic presser foot and the knee lifted bumps and lift the presser foot dual mode to the great presser foot height that lifts can both be obtained, just the mutually noninterfere of presser foot mode is lifted for two kinds.
Description
Technical field
The utility model relates to a kind of annex of Sewing machines, is specifically related to a kind of presser foot lifting device for sewing machine.
Background technology
During with stitching sewing machine clothes, need presser feet to lift clothes are placed on presser feet under press against, presser feet is lifted higher, and applicable ability is stronger.At present, lift presser feet and have three kinds of modes: 1. pull handle; 2. knee at most lever apparatus; 3. control executive component.Existing Sewing machines, the structure pulling handle all possesses, but knee at most bar and control executive component and often can not have both, and undesirable with presser foot lifter height when controlling executive component mode.
Chinese patent literature CN103215758 discloses a kind of built-in automatic needle-foot-lifting mechanism of Sewing machines, eliminate knee at most bar presser foot lifter function, and the housing of executive component is screwed on head.Movement locus due to the movable end of its executive component is straight line, the contact point of active force is mobile on lever, gradually away from fulcrum, the movable end of executive component often stretches out unit length, the corner of lever is reducing gradually, presser foot lifter height also just reduces, so presser foot lifter height is undesirable gradually.
If retain knee at most bar presser foot lifter function, when push rod rises, the movable end of executive component will be lifted, and increases the physical demands of user.When use automatic needle-foot-lifting, during the movable end jack-up of executive component, push rod also can be lifted, and increases noise.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of presser foot lifting device for sewing machine, and it can make executive component realize in the course of the work swinging.
For solving the problems of the technologies described above, the technical solution of the utility model presser foot lifting device for sewing machine is:
Comprise executive component 6, executive component 6 is arranged on head 100 by support 4; Support 4 connects head 100 by axle 1, and executive component 6 can be swung around axle 1; The top movable end of executive component 6 is connected with the stiff end of unidirectional lever 8 by the first axial screw 7, and unidirectional lever 8 can swing around the first axial screw 7; The free end of unidirectional lever 8 passes through one end of fan-shaped presser foot lifter lever 10 cylinder lever connecting rod 15, and the other end of pull bar 15 connects presser foot lifter assembly 17; Presser foot lifter assembly 17 connects presser feet 19; The free end of described unidirectional lever 8 connects the first free end of fan-shaped presser foot lifter lever 10, the stiff end of fan-shaped presser foot lifter lever 10 is fixed on head 100 top by the second axial screw 11, and the second free end of fan-shaped presser foot lifter lever 10 connects one end of described pull bar 15 by the 3rd axial screw 12; The free end of described unidirectional lever 8 is formed with the bending part of position-limiting action, and unidirectional lever 8 contacts the upper profile of fan-shaped presser foot lifter lever 10 by free end bending part.
Described fan-shaped presser foot lifter lever 10 comprises a fan-shaped body, and the center of circle of fan-shaped body is as stiff end, and two arc ends of fan-shaped body are as free end; The place of keeping to the side of fan-shaped body offers deep-slotted chip breaker F; The deep-slotted chip breaker F of fan-shaped presser foot lifter lever 10 connects vertically disposed push rod 14, and push rod 14 can slide in deep-slotted chip breaker F.
Drive described executive component 6, the top movable end of executive component 6 stretches out, and the top movable end of executive component 6 drives fan-shaped presser foot lifter lever 10 to swing around the second axial screw 11 by unidirectional lever 8; The swing of fan-shaped presser foot lifter lever 10 pulls pull bar 15, presser feet 19 is upwards lifted, realizes automatic needle-foot-lifting; Meanwhile, first axial screw 7 of executive component 6 top movable end increases with the distance of axle 1, and distance between the first axial screw 7 and the second axial screw 11 is constant, thus executive component 6 is swung around axle 1, the swing of executive component 6 drives fan-shaped presser foot lifter lever 10 to swing around the second axial screw 11 further, and presser feet 19 is upwards lifted further; In the process, the push rod 14 arcuately downward relative sliding of groove F under gravity; Therefore, when the top movable end of executive component 6 moves up, push rod 14 can not be lifted.
Knee touches described push rod 14 makes it move upward, and push rod 14 drives fan-shaped presser foot lifter lever 10 to swing around the second axial screw 11, and the swing of fan-shaped presser foot lifter lever 10 pulls pull bar 15, presser feet 19 is upwards lifted, realizes knee and touch presser foot lifter; The unidirectional lever 8 that swings by of fan-shaped presser foot lifter lever 10 drives executive component 6 to swing around axle 1; Therefore, when push rod 14 moves up, the movable end of executive component 6 can not be lifted.
The top of described push rod 14 offers pin-and-hole, through connection opening pin 13 after deep-slotted chip breaker F, drops to prevent push rod 14 in the top of push rod 14.
The outstanding object that described bending part is square, circular arc, grooved or installs.
Described axle 1 connects through support 4 or is fixed on head 100 bottom by packing ring 2, screw 3.
Described executive component 6 is the executive component of rectilinear motion; The executive component of described rectilinear motion comprises electromagnet, cylinder or hydraulic cylinder.
The housing of described executive component 6 is fixedly connected with support 4 by screw 5, the housing of executive component 6 offers the hole be fixedly connected with support 4; Or support 4 is fixed with the case weld of executive component 6; Or support 4 is parts that the housing of executive component 6 extends out.
Described fan-shaped presser foot lifter lever 10 comprises a fan-shaped body, and the center of circle of fan-shaped body is as stiff end, and two arc ends of fan-shaped body are as free end; The free end of described unidirectional lever 8 connects the first free end of fan-shaped presser foot lifter lever 10 by cover 9, cover 9 connects vertically disposed push rod 14; Described push rod 14 is between pull bar 15 and the top movable end of executive component 6.
The technique effect that the utility model can reach is:
The utility model can realize automatic needle-foot-lifting and knee touches presser foot lifter two kinds of modes, and can obtain larger presser foot lifter height, and two kinds of presser foot lifter modes are non-interference.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the schematic diagram of the utility model presser foot lifting device for sewing machine;
Fig. 2 is decomposing schematic representation of the present utility model;
Fig. 3 is the schematic diagram of support of the present utility model;
Fig. 4 is the schematic diagram of unidirectional lever of the present utility model;
Fig. 5 is the schematic diagram of fan-shaped presser foot lifter lever of the present utility model.
Description of reference numerals in figure:
1 is minor axis, and 2 is packing ring,
3 is screw, and 4 is support,
5 is screw, and 6 is executive component,
7 is the first axial screw, and 8 is unidirectional lever,
9 is cover, and 10 is fan-shaped presser foot lifter lever,
11 is the second axial screw, and 12 is the 3rd axial screw,
13 is split pin, and 14 is push rod,
15 is pull bar, and 16 is the 4th axial screw,
17 is presser foot lifter assembly, and 18 is presser bar,
19 is presser feet, and 20 is screw,
100 is head.
Detailed description of the invention
As shown in Figure 1, the utility model presser foot lifting device for sewing machine, comprises head 100, and head 100 is carriers of presser foot lifting device;
Executive component 6 is fixedly installed on support 4, and the bottom of support 4 is connected with head 100 by minor axis 1; Executive component 6 can swing around minor axis 1; Minor axis 1 connects through support 4 or is fixed on head 100 bottom by packing ring 2, screw 3, and support 4 can only swing around minor axis 1, can not move axially;
Executive component 6 can be the executive component of electromagnet, cylinder or hydraulic cylinder isoline motion; The top movable end of executive component 6 can stretch, produce thrust or pulling force;
The top movable end of executive component 6 offers for hinged hole; The top movable end of executive component 6 is connected with the fixing stomidium E of unidirectional lever 8 by the first axial screw 7, and unidirectional lever 8 can swing around the first axial screw 7;
The free end of unidirectional lever 8 passes through one end of fan-shaped presser foot lifter lever 10 cylinder lever connecting rod 15, and the other end of pull bar 15 connects presser foot lifter assembly 17; Presser foot lifter assembly 17 connects head 100 by the 4th axial screw 16; Presser foot lifter assembly 17 is vertically installed with presser bar 18, the bottom of presser bar 18 connects presser feet 19 by screw 20;
The free end of unidirectional lever 8 connects the first free end of fan-shaped presser foot lifter lever 10, and the stiff end of fan-shaped presser foot lifter lever 10 is fixed on head 100 top by the second axial screw 11, one end of the second free end cylinder lever connecting rod 15 of fan-shaped presser foot lifter lever 10;
When executive component 6 works, power arm length is the distance between the top movable end of executive component 6 and the stiff end (i.e. the first axial screw 7 and the second axial screw 11) of fan-shaped presser foot lifter lever 10.
As shown in Figure 4, the free end of unidirectional lever 8 is formed with the bending part of position-limiting action, and stiff end offers fixing stomidium E, and porose D is offered in the side of bending part; Bending part can be square, circular arc or grooved.
As shown in Figure 5, fan-shaped presser foot lifter lever 10 comprises a fan-shaped body, and the circle centre position of fan-shaped body offers fixing stomidium B, and fixing stomidium B can be provided with boss to increase stability; Two arc ends of fan-shaped body offer free stomidium A, C respectively; The deep-slotted chip breaker F that it is the center of circle that the place of keeping to the side of fan-shaped body offers with fixing stomidium B;
The free stomidium D of unidirectional lever 8 connects the first free stomidium C of fan-shaped presser foot lifter lever 10 by cover 9, unidirectional lever 8 can swing around cover 9; Be provided with the 3rd axial screw 12 in second free stomidium A of fan-shaped presser foot lifter lever 10, fan-shaped presser foot lifter lever 10 is by one end of the 3rd axial screw 12 cylinder lever connecting rod 15;
The deep-slotted chip breaker F of fan-shaped presser foot lifter lever 10 connects vertically disposed push rod 14; The top of push rod 14 offers pin-and-hole, through connection opening pin 13 after deep-slotted chip breaker F, drops to prevent push rod 14 in the top of push rod 14; Push rod 14 can in deep-slotted chip breaker F relative sliding;
The fixing stomidium B of fan-shaped presser foot lifter lever 10 is provided with the second axial screw 11, and the stiff end of fan-shaped presser foot lifter lever 10 is fixed on head 100 top by the second axial screw 11, and fan-shaped presser foot lifter lever 10 can swing around the second axial screw 11;
The free end bending part of the unidirectional lever 8 of upper profile contacts of fan-shaped presser foot lifter lever 10, when the free end of unidirectional lever 8 moves upward, drives fan-shaped presser foot lifter lever 10 to swing around the second axial screw 11;
The housing of executive component 6 is fixedly connected with support 4 by screw 5, the housing of executive component 6 offers the hole be fixedly connected with support 4; The housing of executive component 6 can a few part be spliced;
As shown in Figure 3, the bottom of support 4 offers the through hole matched with minor axis 1;
Support 4 also can be weld with the mode that is fixedly connected with of the housing of executive component 6; Or support 4 is formed in one with the housing of executive component 6, namely support 4 is parts that the housing of executive component 6 extends out.
First axial screw 7, second axial screw 11, the 3rd axial screw 12, the 4th axial screw 16 can be one, also can be the assemblys of screw and cover.
Operation principle of the present utility model is as follows:
Automatic needle-foot-lifting mode: drive executive component 6, the top movable end of executive component 6 stretches out, masterpiece is used in the fixing stomidium E place of unidirectional lever 8 by the top movable end of executive component 6, drives fan-shaped presser foot lifter lever 10 to swing around the second axial screw 11 by unidirectional lever 8; The swing of fan-shaped presser foot lifter lever 10 pulls pull bar 15, and presser feet 19 will upwards be lifted, and realizes automatic needle-foot-lifting;
Meanwhile, first axial screw 7 of executive component 6 top movable end increases with the distance of minor axis 1, and the distance constant (distance namely between hole E to hole B is constant) between the first axial screw 7 and the second axial screw 11, thus executive component 6 is swung around minor axis 1, the swing of executive component 6 drives fan-shaped presser foot lifter lever 10 to swing around the second axial screw 11 further, makes presser feet 19 be lifted get Geng Gao; In the process, the push rod 14 arcuately downward relative sliding of groove F under gravity; Therefore, when the top movable end of executive component 6 moves up, push rod 14 can not be lifted, thus avoids the generation of friction and noise.
Knee touches presser foot lifter mode: knee at most bar 14 makes it move upward, and push rod 14 drives fan-shaped presser foot lifter lever 10 to swing around the second axial screw 11, and the swing of fan-shaped presser foot lifter lever 10 pulls pull bar 15, and presser feet 19 will upwards be lifted, and realizes knee and touches presser foot lifter;
The unidirectional lever 8 that swings by of fan-shaped presser foot lifter lever 10 drives executive component 6 to swing around minor axis 1; Therefore, when push rod 14 moves up, the movable end of executive component 6 can not be lifted, thus can alleviate the muscle power of part friction and operator.
No matter adopt executive component 6 presser foot lifter or adopt knee at most bar 14 presser foot lifter, two kinds of presser foot lifter modes are non-interference.
Claims (10)
1. a presser foot lifting device for sewing machine, is characterized in that: comprise executive component, executive component by Bracket setting on head; Support connects head by axle, and executive component is swung around axle;
The top movable end of executive component is connected with the stiff end of unidirectional lever by the first axial screw, and unidirectional lever can swing around the first axial screw; The free end of unidirectional lever passes through one end of fan-shaped presser foot lifter lever cylinder lever connecting rod, and the other end of pull bar connects presser foot lifter assembly; Presser foot lifter assembly connects presser feet;
The free end of described unidirectional lever connects the first free end of fan-shaped presser foot lifter lever, the stiff end of fan-shaped presser foot lifter lever is fixed on head top by the second axial screw, and the second free end of fan-shaped presser foot lifter lever connects one end of described pull bar by the 3rd axial screw;
The free end of described unidirectional lever is formed with the bending part of position-limiting action, and unidirectional lever contacts the upper profile of fan-shaped presser foot lifter lever by free end bending part.
2. presser foot lifting device for sewing machine according to claim 1, is characterized in that: described fan-shaped presser foot lifter lever comprises a fan-shaped body, and the center of circle of fan-shaped body is as stiff end, and two arc ends of fan-shaped body are as free end; The place of keeping to the side of fan-shaped body offers deep-slotted chip breaker;
The deep-slotted chip breaker of fan-shaped presser foot lifter lever connects vertically disposed push rod, and push rod can slide in deep-slotted chip breaker.
3. presser foot lifting device for sewing machine according to claim 2, it is characterized in that: drive described executive component, the top movable end of executive component stretches out, and the top movable end of executive component is swung around the second axial screw by the fan-shaped presser foot lifter lever of unidirectional lever drives; The swing of fan-shaped presser foot lifter lever pulls pull bar, presser feet is upwards lifted, realizes automatic needle-foot-lifting;
Meanwhile, first axial screw of executive component top movable end and the distance of axle increase, and distance between the first axial screw and the second axial screw is constant, thus executive component is swung around axle, the swing of executive component drives fan-shaped presser foot lifter lever to swing around the second axial screw further, and presser feet is upwards lifted further; In the process, the push rod arcuately downward relative sliding of groove under gravity; Therefore, when the top movable end of executive component moves up, push rod can not be lifted.
4. presser foot lifting device for sewing machine according to claim 2, it is characterized in that: knee touches described push rod makes it move upward, push rod drives fan-shaped presser foot lifter lever to swing around the second axial screw, and the swing of fan-shaped presser foot lifter lever pulls pull bar, presser feet is upwards lifted, realizes knee and touch presser foot lifter;
The unidirectional lever drives executive component that swings by of fan-shaped presser foot lifter lever swings around axle; Therefore, when push rod moves up, the movable end of executive component can not be lifted.
5. presser foot lifting device for sewing machine according to claim 2, is characterized in that: the top of described push rod offers pin-and-hole, through connection opening pin after deep-slotted chip breaker, drops to prevent push rod in the top of push rod.
6. presser foot lifting device for sewing machine according to claim 1, is characterized in that: the outstanding object that described bending part is square, circular arc, grooved or installs.
7. presser foot lifting device for sewing machine according to claim 1, is characterized in that: described axle connects through support or is fixed on head bottom by packing ring, screw.
8. presser foot lifting device for sewing machine according to claim 1, is characterized in that: described executive component is the executive component of rectilinear motion; The executive component of described rectilinear motion comprises electromagnet, cylinder or hydraulic cylinder.
9. presser foot lifting device for sewing machine according to claim 1, is characterized in that: the housing of described executive component is fixedly connected with support by screw, the housing of executive component offers the hole be fixedly connected with support; Or the case weld of support and executive component is fixed; Or support is the part that the housing of executive component extends out.
10. presser foot lifting device for sewing machine according to claim 1, is characterized in that: described fan-shaped presser foot lifter lever comprises a fan-shaped body, and the center of circle of fan-shaped body is as stiff end, and two arc ends of fan-shaped body are as free end;
The free end of described unidirectional lever connects the first free end of fan-shaped presser foot lifter lever by cover, cover connects vertically disposed push rod; Described push rod is between pull bar and the top movable end of executive component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520599194.1U CN204919000U (en) | 2015-10-28 | 2015-10-28 | Sewing machine lifts presser foot device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520599194.1U CN204919000U (en) | 2015-10-28 | 2015-10-28 | Sewing machine lifts presser foot device |
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| Publication Number | Publication Date |
|---|---|
| CN204919000U true CN204919000U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520599194.1U Active CN204919000U (en) | 2015-10-28 | 2015-10-28 | Sewing machine lifts presser foot device |
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| CN (1) | CN204919000U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108611770A (en) * | 2018-06-01 | 2018-10-02 | 杰克缝纫机股份有限公司 | A kind of lifting pressre of sewing machine structure and sewing machine |
| CN108796842A (en) * | 2017-04-27 | 2018-11-13 | 杰克缝纫机股份有限公司 | The auxiliary device and sewing machine of presser foot lifter |
| CN109281072A (en) * | 2018-10-31 | 2019-01-29 | 杰克缝纫机股份有限公司 | A kind of sewing machine and its presser foot lifting device |
-
2015
- 2015-10-28 CN CN201520599194.1U patent/CN204919000U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108796842A (en) * | 2017-04-27 | 2018-11-13 | 杰克缝纫机股份有限公司 | The auxiliary device and sewing machine of presser foot lifter |
| CN108796842B (en) * | 2017-04-27 | 2020-10-09 | 杰克缝纫机股份有限公司 | Auxiliary device for lifting presser foot and sewing machine |
| CN108611770A (en) * | 2018-06-01 | 2018-10-02 | 杰克缝纫机股份有限公司 | A kind of lifting pressre of sewing machine structure and sewing machine |
| CN108611770B (en) * | 2018-06-01 | 2020-08-18 | 杰克缝纫机股份有限公司 | Sewing machine lifts presser foot structure and sewing machine |
| CN109281072A (en) * | 2018-10-31 | 2019-01-29 | 杰克缝纫机股份有限公司 | A kind of sewing machine and its presser foot lifting device |
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Effective date of registration: 20230105 Address after: 318000 Xin He Zhen Cheng Nan Cun Jin Xiu Lu, Wenling City, Taizhou City, Zhejiang Province Patentee after: ZHEJIANG SUNSIR SEWING MACHINE AND TECHNOLOGY Co.,Ltd. Address before: No. 193, Xinxin Middle Road, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG MAQI SEWING MACHINE Co.,Ltd. |