CN204112017U - A kind of sewing-machine automatic needle-foot-lifting mechanism of external - Google Patents
A kind of sewing-machine automatic needle-foot-lifting mechanism of external Download PDFInfo
- Publication number
- CN204112017U CN204112017U CN201420442329.9U CN201420442329U CN204112017U CN 204112017 U CN204112017 U CN 204112017U CN 201420442329 U CN201420442329 U CN 201420442329U CN 204112017 U CN204112017 U CN 204112017U
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- Prior art keywords
- rotating shaft
- connecting rod
- swing arm
- sewing
- foot
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- 238000009958 sewing Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
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- Sewing Machines And Sewing (AREA)
Abstract
The utility model belongs to sewing-machine automatic needle-foot-lifting technical field, refer in particular to a kind of sewing-machine automatic needle-foot-lifting mechanism of external, plunger electromagnet is laterally arranged on sewing machine case, the draw bar of plunger electromagnet and the end of first connecting rod hinged, the other end of first connecting rod and one end of second connecting rod hinged, the other end of second connecting rod is fixedly connected with rotating shaft, rotating shaft is installed in rotation on sewing machine case, the inner of rotating shaft is connected with interior swing arm, interior swing arm lower end drives pull bar, draw bar of the present utility model by mutually hinged first connecting rod second connecting rod carry-over moment to rotating shaft, in this design compared to existing technology, draw bar and outer swing arm are split transmission, have to coordinate and stablize, the feature of security performance excellence.
Description
Technical field
The utility model belongs to sewing-machine automatic needle-foot-lifting technical field, refers in particular to a kind of sewing-machine automatic needle-foot-lifting mechanism of external.
Background technology
ZL 201310372669.9 discloses a kind of automatic needle-foot-lifting mechanism of Sewing machines, and as shown in Figure 1-2, its linear actuator (that is, electromagnet) is arranged on the outside of casing, belongs to external; The linear actuator of this mechanism is fixedly mounted on the outer wall of casing, the draw bar 11 of linear actuator 1 drives outer swing arm 22, outer swing arm 22 the inner is fixedly connected with rotating shaft 21, and rotating shaft 21 is rotatably installed on casing 100 and also drives interior swing arm 23, and interior swing arm 23 drives pull bar 3.
There is following shortcoming in this technology: 1, is split type between draw bar 11 and outer swing arm 22, and outer swing arm 22 keeps being pushed against draw bar upper end by the reset force of pull bar 3 one end, and split type design causes coordinating instability, there is potential safety hazard; 2, the angle between outer swing arm 22 and interior swing arm 23 is fixed, and cannot finely tune; 3, interior swing arm 23 and pull bar 3 end hinged, it exists installs relatively loaded down with trivial details shortcoming.
Summary of the invention
It is simple that the purpose of this utility model is to provide a kind of structure, easy for installation, the sewing-machine automatic needle-foot-lifting mechanism of safe and reliable external.
The purpose of this utility model is achieved in that
A kind of sewing-machine automatic needle-foot-lifting mechanism of external, plunger electromagnet is laterally arranged on sewing machine case, the draw bar of plunger electromagnet and the end of first connecting rod hinged, the other end of first connecting rod and one end of second connecting rod hinged, the other end of second connecting rod is fixedly connected with rotating shaft, rotating shaft is installed in rotation on sewing machine case, and the inner of rotating shaft is connected with interior swing arm, and interior swing arm lower end drives pull bar.
Preferably, the other end of described second connecting rod is fixedly connected with rotating shaft and is: the other end of second connecting rod is provided with bayonet socket, and the outer end of described rotating shaft is stretched in described bayonet socket I, and bayonet socket I is locked and rotating shaft outer end and second connecting rod are fixed as one by clamping screw I.
Preferably, described interior swing arm lower end drive pull bar is: the lower end of interior swing arm is provided with hook part, and the end of described pull bar is provided with trundle, and the front end of trundle is arranged on inside hook part.
Preferably, the inner of described rotating shaft is connected with interior swing arm and is: the upper end of interior swing arm is provided with bayonet socket II, and the inner of rotating shaft is stretched in described bayonet socket II, and bayonet socket II is locked and rotating shaft the inner is connected as one with interior swing arm by clamping screw II.
Preferably, described rotating shaft is installed in rotation on sewing machine case and is: the middle part of rotating shaft is located in sleeve, and the rear end of sleeve is passed the rear window panel of sewing machine case and spins with a nut.
The utility model gives prominence to compared to existing technology and useful technique effect is:
Draw bar of the present utility model is by mutually hinged first connecting rod second connecting rod carry-over moment to rotating shaft, and in this design compared to existing technology, draw bar and outer swing arm are split transmission, has to coordinate to stablize, the feature of security performance excellence;
The other end of second connecting rod of the present utility model is provided with bayonet socket, the outer end of described rotating shaft is stretched in described bayonet socket I, bayonet socket I is locked and rotating shaft outer end and second connecting rod is fixed as one by clamping screw I, in this design, by unscrewing or screw clamping screw I i.e. fine-tuning second connecting rod, draw bar is made to drive the rotational angle of rotating shaft controlled;
The lower end of interior swing arm of the present utility model is provided with hook part, and the end of described pull bar is provided with trundle, and the front end of trundle is arranged on inside hook part, and this design makes the connection of interior swing arm and pull bar more easy;
Interior swing arm upper end of the present utility model is provided with bayonet socket II, the inner of rotating shaft is stretched in described bayonet socket II, bayonet socket II is locked and rotating shaft the inner is connected as one with interior swing arm by clamping screw II, in this design, by unscrewing or screw clamping screw II i.e. fine-tuning interior swing arm, make interior swing arm give the pre-stressed position of trundle adjustable, thus the scope of activities of automatic needle-foot-lifting can be adjusted;
The middle part of rotating shaft of the present utility model is located in sleeve, and the rear end of sleeve is passed the rear window panel of sewing machine case and spins with a nut, and this design makes rotating shaft longer service life, and the resistance of sleeve lining and rotating shaft is less.
Accompanying drawing explanation
Fig. 1 is the scheme of installation of external sewing-machine automatic needle-foot-lifting mechanism of the prior art.
Fig. 2 is the operation principle schematic diagram of external sewing-machine automatic needle-foot-lifting mechanism of the prior art.
Fig. 3 is operation principle schematic diagram of the present utility model.
In figure: 1-plunger electromagnet; 3-pull bar; Lever before 4-; 5-presser feet lifter plate; 6-depression bar; 7-presser feet; 8-rear window panel; 11-draw bar; 21-rotating shaft; The outer swing arm of 22-; Swing arm in 23-; 100-casing;
30-plunger electromagnet; 31-draw bar; 32-first connecting rod; 33-second connecting rod; 34-fixed mount; 35-clamping screw I; 36-sleeve; 37-clamping screw II; Swing arm in 38-; 39-trundle; 40-hook part; 41-rotating shaft; 42-nut.
Detailed description of the invention
The utility model is further described with specific embodiment below in conjunction with accompanying drawing:
A kind of sewing-machine automatic needle-foot-lifting mechanism of external, plunger electromagnet 30 is laterally arranged on sewing machine case, the draw bar 31 of plunger electromagnet 30 is hinged with the end of first connecting rod 32, the other end of first connecting rod 32 and one end of second connecting rod 33 hinged, the other end of second connecting rod 33 is fixedly connected with rotating shaft 41, rotating shaft 41 is installed in rotation on sewing machine case, and the inner of rotating shaft 41 is connected with interior swing arm 38, and interior swing arm 38 lower end drives pull bar.
Preferably, the other end of described second connecting rod 33 is fixedly connected with rotating shaft 41 and is: the other end of second connecting rod 33 is provided with bayonet socket, the outer end of described rotating shaft 41 is stretched in described bayonet socket I, and bayonet socket I is locked and rotating shaft 41 outer end and second connecting rod 33 are fixed as one by clamping screw I 35.
Preferably, described interior swing arm 38 lower end drive pull bar is: the lower end of interior swing arm 38 is provided with hook part 26, and the end of described pull bar is provided with trundle 39, and the front end of trundle 39 is arranged on inside hook part 26.
Preferably, the inner of described rotating shaft 41 is connected with interior swing arm 38 and is: the upper end of interior swing arm 38 is provided with bayonet socket II, and the inner of rotating shaft 41 is stretched in described bayonet socket II, and bayonet socket II is locked and rotating shaft 41 the inner is connected as one with interior swing arm 38 by clamping screw II 37.
Preferably, described rotating shaft 41 is installed in rotation on sewing machine case and is: the middle part of rotating shaft 41 is located in sleeve 36, the rear end of sleeve 36 is passed the rear window panel of sewing machine case and spins with a nut 42, this design makes rotating shaft 41 longer service life, and the resistance of sleeve 36 inwall and rotating shaft 41 is less.
It should be noted that, first connecting rod 32 of the present utility model, second connecting rod 33 and rotating shaft 41 are linked in sequence, three constitutes one can self-reacting transmission system, between draw bar 31 and first connecting rod 32, between first connecting rod 32 and second connecting rod 33, and, when there is dislocation slightly between second connecting rod 33 and rotating shaft, this transmission system all can adapt to automatically, and the utility model can normally be worked.
Above-described embodiment is only preferred embodiment of the present utility model, not limits protection domain of the present utility model according to this, therefore: all equivalence changes done according to structure of the present utility model, shape, principle, all should be covered by within protection domain of the present utility model.
Claims (5)
1. the sewing-machine automatic needle-foot-lifting mechanism of an external, it is characterized in that, plunger electromagnet is laterally arranged on sewing machine case, the draw bar of plunger electromagnet and the end of first connecting rod hinged, the other end of first connecting rod and one end of second connecting rod hinged, the other end of second connecting rod is fixedly connected with rotating shaft, and rotating shaft is installed in rotation on sewing machine case, the inner of rotating shaft is connected with interior swing arm, and interior swing arm lower end drives pull bar.
2. the sewing-machine automatic needle-foot-lifting mechanism of a kind of external according to claim 1, it is characterized in that, the other end of described second connecting rod is fixedly connected with rotating shaft and is: the other end of second connecting rod is provided with bayonet socket, the outer end of described rotating shaft is stretched in described bayonet socket I, and bayonet socket I is locked and rotating shaft outer end and second connecting rod are fixed as one by clamping screw I.
3. the sewing-machine automatic needle-foot-lifting mechanism of a kind of external according to claim 1, it is characterized in that, described interior swing arm lower end drive pull bar is: the lower end of interior swing arm is provided with hook part, and the end of described pull bar is provided with trundle, and the front end of trundle is arranged on inside hook part.
4. the sewing-machine automatic needle-foot-lifting mechanism of a kind of external according to claim 1, it is characterized in that, the inner of described rotating shaft is connected with interior swing arm and is: the upper end of interior swing arm is provided with bayonet socket II, the inner of rotating shaft is stretched in described bayonet socket II, and bayonet socket II is locked and rotating shaft the inner is connected as one with interior swing arm by clamping screw II.
5. the sewing-machine automatic needle-foot-lifting mechanism of a kind of external according to claim 1, it is characterized in that, described rotating shaft is installed in rotation on sewing machine case: the middle part of rotating shaft is located in sleeve, and the rear end of sleeve is passed the rear window panel of sewing machine case and spins with a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420442329.9U CN204112017U (en) | 2014-08-07 | 2014-08-07 | A kind of sewing-machine automatic needle-foot-lifting mechanism of external |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420442329.9U CN204112017U (en) | 2014-08-07 | 2014-08-07 | A kind of sewing-machine automatic needle-foot-lifting mechanism of external |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204112017U true CN204112017U (en) | 2015-01-21 |
Family
ID=52329349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420442329.9U Expired - Fee Related CN204112017U (en) | 2014-08-07 | 2014-08-07 | A kind of sewing-machine automatic needle-foot-lifting mechanism of external |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204112017U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106149217A (en) * | 2016-08-31 | 2016-11-23 | 浙江美机缝纫机有限公司 | Top-type sewing-machine foot lifting drive mechanism and sewing machine thereof |
-
2014
- 2014-08-07 CN CN201420442329.9U patent/CN204112017U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106149217A (en) * | 2016-08-31 | 2016-11-23 | 浙江美机缝纫机有限公司 | Top-type sewing-machine foot lifting drive mechanism and sewing machine thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |