CN104120552A - Sewing machine and presser foot adjusting device thereof - Google Patents
Sewing machine and presser foot adjusting device thereof Download PDFInfo
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- CN104120552A CN104120552A CN201410400545.1A CN201410400545A CN104120552A CN 104120552 A CN104120552 A CN 104120552A CN 201410400545 A CN201410400545 A CN 201410400545A CN 104120552 A CN104120552 A CN 104120552A
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- mandrel
- adjusting device
- presser feet
- electromagnet
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Abstract
The invention discloses a sewing machine and a presser foot adjusting device of the sewing machine. The presser foot adjusting device comprises an electromagnet, an electromagnet core, a mandrel, a core holder, a driving connecting rod and a driving shifting rod, wherein the electromagnet core and the mandrel are located in the electromagnet, the core holder is fixed to one end of the electromagnet, the driving shifting rod is connected with the driving connecting rod, a first end of the mandrel penetrates through the core holder and is in sliding fit with the core holder, a threaded hole is formed in the electromagnet core in the axial direction of the electromagnet, and the mandrel is connected with the threaded hole in a threaded mode. The presser foot adjusting device further comprises a connector which is rotationally connected with the first end of the mandrel, wherein one end of the driving connecting rod is hinged to the connector. According to the structural design of the presser foot adjusting device, the problem that the height of a lifted presser foot is fixed, and the requirement for sewing different types of fabric cannot be met can be effectively solved.
Description
Technical field
The present invention relates to technical field of sewing equipment, more particularly, relate to a kind of Sewing machines and presser feet adjusting device thereof.
Background technology
The presser feet of Sewing machines is to be used for fixing cloth and to follow the trail of the parts of stitching, Sewing machines generally also comprise be connected with presser feet for regulating the adjusting device of presser feet height.In the time that needs are placed cloth below presser feet, can presser feet be raised by adjusting device, then below presser feet, place cloth, after placement, by adjusting device, presser feet is declined and is pressed on cloth again.
As shown in Figure 1, presser feet adjusting device of the prior art comprises electromagnet 03, electromagnetic core 04, mandrel 02, core print seat 05, drive link 06, drives driving lever 01 and can support the bracing or strutting arrangement of electromagnet.Wherein electromagnet 03 inner hollow, electromagnetic core 04 and mandrel 02 are positioned at electromagnet 03 middle part hollow, and electromagnetic core 04 and mandrel 02 can slide along the axis of electromagnet, core print seat 05 is fixed on the one end at electromagnet middle part, mandrel 02 passes core print seat 05 and is slidably matched with core print seat, and mandrel 02 is integral type structure with electromagnetic core 04, when electromagnet 03 is switched on, due to magneticaction, electromagnetic core 04 and mandrel 02 all slide until electromagnetic core 04 offsets with core print seat 05 to the direction near core print seat, when power-off, magnetic force disappears, electromagnetic core 04 and mandrel 02 all slide to the direction away from core print seat 05 by the effect of return unit or presser feet self gravitation, so realize the movement of mandrel 02.Mandrel is hinged through one end of core print seat and one end of drive link 06, the other end of drive link 06 is connected with driving driving lever 01, drive driving lever 01 to be connected with the support bar of presser feet, so moving around of mandrel 02 can and drive driving lever 01 and then drive presser feet to raise or put down by drive link 06.
But mandrel 02 is integral type structure with electromagnetic core 04, the distance that so electromagnetic core 04 moves in the time of energising is fixed, and the distance that therefore mandrel 02 moves in the time of energising is also fixed, and the height that so presser feet is raised is also fixed.If the height that so presser feet is raised is lower, when the cloth of sewing is thicker, be difficult to place cloth, if the height that presser feet is raised is higher, when the cloth of sewing is thinner, be difficult to accurately follow the trail of sewing thread trace.Therefore the height that presser feet is raised can not meet the sewing of more clothes while fixing.
In sum, how effectively solving the height that presser feet raises and fix, can not meet the problem of the sewing of multiple cloth, is current those skilled in the art's urgent problem.
Summary of the invention
In view of this, first object of the present invention is to provide a kind of presser feet adjusting device, the structural design of this presser feet adjusting device can effectively solve the height that presser feet raises and fix, can not meet the problem of the sewing of multiple cloth, second object of the present invention is to provide a kind of Sewing machines that comprises above-mentioned presser feet adjusting device.
In order to reach above-mentioned first object, the invention provides following technical scheme:
A kind of presser feet adjusting device, the electromagnetic core that comprise electromagnet, is positioned at electromagnet inside and mandrel, the core print seat that is fixed on described electromagnet one end, drive link and the driving driving lever being connected with described drive link, the first end of described mandrel passes core print seat and is slidably matched with it
On described electromagnetic core, offer the axial setting along described electromagnet of screwed hole and described screwed hole, described mandrel is threaded with described screwed hole;
Also comprise the joint being rotationally connected with the first end of described mandrel, one end of described drive link and described joint are hinged.
Preferably, in above-mentioned presser feet adjusting device, also offer the through hole being communicated with described screwed hole on described electromagnetic core, the diameter of described through hole is greater than the diameter of described screwed hole, is fixed with jump ring and described jump ring can be against on the diapire of through hole on described mandrel.
Preferably, in above-mentioned presser feet adjusting device, the second end of described mandrel is positioned at described through hole, and the second end of described mandrel is fixedly connected with nut, on described nut, offers draw-in groove.
Preferably, in above-mentioned presser feet adjusting device, described core print seat has groove that can accommodating described electromagnetic core end, and the end of described electromagnetic core is taper.
Preferably, in above-mentioned presser feet adjusting device, also comprise the bracing or strutting arrangement being fixedly connected with described electromagnet, described bracing or strutting arrangement comprises front support and rear support.
Preferably, in above-mentioned presser feet adjusting device, described joint comprises bearing and the pedestal being fixedly connected with the outer ring of described bearing, and one end of described drive link and described pedestal are hinged, and described mandrel is fixedly connected with the inner ring of described bearing.
Preferably, in above-mentioned presser feet adjusting device, also comprise the back-moving spring being connected with one end away from described core print seat of described electromagnetic core.
Preferably, in above-mentioned presser feet adjusting device, on the inwall in the hole that the described mandrel of confession of described core print seat passes, be also embedded with antifriction ring.
A kind of Sewing machines, comprises presser feet adjusting device, and described presser feet adjusting device is the presser feet adjusting device as described in above-mentioned middle any one.
Presser feet adjusting device provided by the invention comprises electromagnet, electromagnetic core, mandrel, core print seat, drive link, driving driving lever and joint.Same as the prior art, electromagnetic core and mandrel are all positioned at electromagnet inside, and core print seat is fixed on one end of electromagnet, and drive link is connected with driving driving lever.Mandrel has first end and the second end, and wherein the first end of mandrel exposes to electromagnet through core print seat, and mandrel and core print seat are slidably matched.Focus on, on electromagnetic core, offer screwed hole, screwed hole threaded engagement on mandrel and electromagnetic core, be that mandrel is fixedly connected with by screw thread with electromagnetic core, and screwed hole is along the axial setting of electromagnet, be the setting that overlaps of axis, the axis of mandrel and the axis of electromagnet of screwed hole, so, in the time that mandrel rotates in screwed hole, mandrel entirety moves axially along screwed hole.In addition, the first end of joint and mandrel is rotationally connected, and one end and the joint of drive link are hinged, drives joint and drive link one end hinged with it to move when mandrel moves, the other end of drive link is connected with driving driving lever, and the support bar of presser feet is connected to realize interlock with driving driving lever.
While applying presser feet adjusting device provided by the invention, can rotation mandrel regulate the relative position relation of mandrel and electromagnetic core, and then adjust the height that presser feet lifts.When the height that lifts when needs is higher, can rotation mandrel, mandrel entirety is moved to the direction near core print seat with respect to electromagnetic core, so in the time that electromagnet is switched on, electromagnetic core band moving mandrel moves until electromagnetic core and core print seat offset to the direction near core print seat, now to stretch out the length of electromagnet longer for mandrel, and the distance that the hinged one end of joint and drive link and joint is moved is longer, and then the height that interlock effect is lifted presser feet is higher.When the height that lifts when needs is lower, can rotation mandrel, mandrel entirety is moved to the direction away from core print seat with respect to electromagnetic core, so in the time that electromagnet is switched on, electromagnetic core band moving mandrel moves until electromagnetic core and core print seat offset to the direction near core print seat, it is shorter that now mandrel stretches out the length of electromagnet, and the distance that the hinged one end of joint and drive link and joint is moved is shorter, and then the height that interlock effect is lifted presser feet is lower.In the time of electromagnet power-off, electromagnetic core can move to the direction away from core print seat due to the effect of the Action of Gravity Field of presser feet or return unit, finally resets.So because mandrel and electromagnetic core are threaded connection, thus the relative position of mandrel and electromagnetic core can be changed by rotation mandrel, and then realize the height that regulates presser feet to lift, to realize the sewing of sewing different-thickness cloth.
In order to reach above-mentioned second object, the present invention also provides a kind of Sewing machines, and this Sewing machines comprises above-mentioned any presser feet adjusting device.Because above-mentioned presser feet adjusting device has above-mentioned technique effect, the Sewing machines with this presser feet adjusting device also should have corresponding technique effect.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the cutaway view of presser feet adjusting device in prior art;
The cutaway view of the presser feet adjusting device of the electromagnet off-position that Fig. 2 provides for the embodiment of the present invention;
The cutaway view of the presser feet adjusting device of the electromagnet "on" position that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the presser feet adjusting device that Fig. 4 provides for the embodiment of the present invention.
In accompanying drawing, mark is as follows:
01-drives driving lever, 02-mandrel, 03-electromagnet, 04-electromagnetic core, 05-core print seat, 06-drive link;
1-drives driving lever, 2-front support, 3-core print seat, 4-rear support, 5-nut, 6-jump ring, 7-electromagnetic core, 8-electromagnet, 9-mandrel, 10-joint, 101-bearing, 102-pedestal, 11-drive link, 12-connection bearing.
Detailed description of the invention
First object of the present invention is to provide a kind of presser feet adjusting device, the structural design of this presser feet adjusting device can effectively solve the height that presser feet raises and fix, can not meet the problem of the sewing of multiple cloth, second object of the present invention is to provide a kind of Sewing machines that comprises above-mentioned presser feet adjusting device.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 2-Fig. 4, presser feet adjusting device provided by the invention comprises electromagnet 8, electromagnetic core 7, mandrel 9, core print seat 3, drive link 11, drives driving lever 1 and joint 10.Same as the prior art, electromagnetic core 7 and mandrel 9 are all positioned at electromagnet 8 inside, and core print seat 3 is fixed on one end of electromagnet 8, and drive link 11 is connected with driving driving lever 1.Mandrel 9 has first end and the second end, and wherein the first end of mandrel 9 exposes to electromagnet 8 through core print seat 3, and mandrel 9 is slidably matched with core print seat 3.Focus on, on electromagnetic core 7, offer screwed hole, screwed hole threaded engagement on mandrel 9 and electromagnetic core 7, be that mandrel 9 is fixedly connected with by screw thread with electromagnetic core 7, and screwed hole is along the axial setting of electromagnet 8, be the setting that overlaps of axis, the axis of mandrel 9 and the axis of electromagnet 8 of screwed hole, so in the time that mandrel 9 rotates in screwed hole, mandrel 9 entirety moving axially along screwed hole.In addition, joint 10 is rotationally connected with the first end of mandrel 9, one end of drive link 11 and joint 10 are hinged, be that mandrel 9 drives joint 10 and drive link 11 one end hinged with it to move while moving, the other end of drive link 11 is connected with driving driving lever 1, and the support bar of presser feet is connected to realize interlock with driving driving lever 1.
While applying presser feet adjusting device provided by the invention, can rotation mandrel 9 regulate the relative position relation of mandrel 9 and electromagnetic core 7, and then adjust the height that presser feet lifts.When the height that lifts when needs is higher, can rotation mandrel 9, mandrel 9 entirety are moved to the direction near core print seat 3 with respect to electromagnetic core 7, so in the time that electromagnet 8 is switched on, electromagnetic core 7 moves until electromagnetic core 7 offsets with core print seat 3 to the direction of close core print seat 3 with moving mandrel 9, now to stretch out the length of electromagnet 8 longer for mandrel 9, and the distance that the hinged one end of joint 10 and drive link 11 and joint 10 is moved is longer, and then the height that interlock effect is lifted presser feet is higher.When the height that lifts when needs is lower, can rotation mandrel 9, make mandrel 9 entirety with respect to electromagnetic core 7 to moving away from the direction of core print seat 3, so in the time that electromagnet 8 is switched on, electromagnetic core 7 moves until electromagnetic core 7 offsets with core print seat 3 to the direction of close core print seat 3 with moving mandrel 9, it is shorter that now mandrel 9 stretches out the length of electromagnet 8, and the distance that the hinged one end of joint 10 and drive link 11 and joint 10 is moved is shorter, and then the height that interlock effect is lifted presser feet is lower.In the time of electromagnet power-off, electromagnetic core 7 can, because the effect of the Action of Gravity Field of presser feet or return unit is to moving away from the direction of core print seat 3, finally reset.So because mandrel 9 and electromagnetic core 7 are threaded connection, thus the relative position of mandrel 9 and electromagnetic core 7 can be changed by rotation mandrel 9, and then realize the height that regulates presser feet to lift, to realize the sewing of sewing different-thickness cloth.
Preferably, for the ease of controlling the relative position of mandrel 9 and electromagnetic core 7, on electromagnetic core 7, can also offer the through hole being communicated with screwed hole, the diameter of through hole is greater than the diameter of screwed hole, is fixed with jump ring 6 and jump ring 6 can be against on the diapire of through hole on mandrel 9.It is through hole and the screwed hole axial arranging along mandrel 9, through hole and screwed hole can deads in line, and one end of screwed hole is positioned on the diapire of through hole, so the second end of mandrel 9 is positioned at through hole, jump ring 6 on mandrel 9 can be against on the diapire of through hole, second end that can prevent mandrel 9 with this turns in screwed hole, is not easy to rotate.On mandrel 9, offer the draw-in groove that jump ring 6 can be installed.Certainly, the second end of mandrel 9 also can expose to electromagnet 8, so can be rotated and at the second end, jump ring 6 is set by clamp clamps the second end.
The axis of electromagnet 8 is obliquely installed, and core print seat 3 is positioned at the lower end of electromagnet 8, and electromagnetic core 7 is positioned at the upper end, lower end of electromagnet.Drive driving lever 1 can be fixedly connected with drive link 11.
Further, the second end of mandrel 9 is positioned at described through hole, and the second end of mandrel 9 is fixedly connected with nut 5, on nut 5, offer draw-in groove, rotating screw cap 5 after so can engaging with the draw-in groove of nut 5 by instruments such as screwdrivers, and then realize rotation mandrel 9, the draw-in groove on nut 5 can be cross recess or flat recess.So more be convenient to rotation mandrel 9.Certainly, also can directly draw-in groove be set or rotate by other clamp clamps mandrel 9 at the second end of mandrel 9, in this no limit.
Misplace when preventing that electromagnetic core 7 and core print seat 3 from offseting, on core print seat 3, can have can accommodating electromagnetic core 7 ends groove, and the end of electromagnetic core 7 is taper.Wherein, the end face of electromagnetic core 7 is plane, the part of the Component with Circular Tapered End of electromagnetic core 7, and so electromagnetic core 7 moves in the groove that its end directly falls into core print seat 3.Core print seat 3 can be fixedly connected with by screw with electromagnet.
For the ease of fixing this electromagnet, can also comprise the bracing or strutting arrangement being fixedly connected with electromagnet, bracing or strutting arrangement comprises front support 2 and rear support 4, front support 2 and rear support 4 can all be connected by screw with electromagnet.Can certainly clamp electromagnet 8 to be fixed by fixture, in this no limit.
In addition, joint 10 can comprise bearing 101 and the pedestal 102 being fixedly connected with the outer ring of bearing 101, one end of drive link and pedestal 102 are hinged, mandrel 9 is fixedly connected with the inner ring of bearing 101, so realize being rotationally connected of mandrel 9 and joint 10, and when mandrel 9 moves, can drive drive link to move with one end that joint 10 is connected, and then realize interlock.Certainly, joint 10 can also be other form, such as with joint 10 and mandrel 9 pivot joints.
For the ease of the reset of electromagnetic core 7, can also comprise the back-moving spring being connected with one end away from core print seat 3 of electromagnetic core 7, back-moving spring one end is connected the other end with electromagnetic core 7 and is fixedly connected with support, the back-moving spring that stretches when so electromagnetic core 7 moves near core print seat 3 when energising, when power-off, electromagnetic core 7 is by the elastic reset of back-moving spring.Certainly, the weight that electromagnetic core 7 also can pressured pin resets, and after power-off, presser feet declines by self gravitation, drives driving lever 1 and drive link interlock effect to make mandrel 9 to moving away from the direction of core print seat 3, and then drives electromagnetic core 7 to reset.
In order to reduce the frictional force between mandrel 9 and core print seat 3, on the inwall in the hole of passing for mandrel 9 of core print seat 3, can also be embedded with antifriction ring, on the inwall in the hole of passing for mandrel 9 of core print seat 3, can also be embedded with shock ring further.Can on core print seat 3, be fixedly connected with in addition bearing 12, mandrel 9 is fixedly connected with the inner ring of connection bearing 12, realizes being rotationally connected between core print seat 3 and mandrel 9 with this.
Presser feet adjusting device based on providing in above-described embodiment, the present invention also provides a kind of Sewing machines, and this Sewing machines comprises any one presser feet adjusting device in above-described embodiment.Because this Sewing machines has adopted the presser feet adjusting device in above-described embodiment, so the beneficial effect of this Sewing machines please refer to above-described embodiment.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a presser feet adjusting device, the driving driving lever (1) that comprises electromagnet (8), is positioned at the inner electromagnetic core (7) of electromagnet (8) and mandrel, the core print seat (3) that is fixed on described electromagnet (8) one end, drive link (11) and is connected with described drive link (11), the first end of described mandrel (9) passes core print seat (3) and is slidably matched with it, it is characterized in that
On described electromagnetic core (7), offer the axial setting along described electromagnet (8) of screwed hole and described screwed hole, described mandrel (9) is threaded with described screwed hole;
Also comprise the joint (10) being rotationally connected with the first end of described mandrel (9), one end of described drive link (11) and described joint (10) are hinged.
2. presser feet adjusting device according to claim 1, it is characterized in that, described electromagnetic core also offers the through hole being communicated with described screwed hole on (7), the diameter of described through hole is greater than the diameter of described screwed hole, is fixed with jump ring (6) and described jump ring (6) can be against on the diapire of through hole on described mandrel (9).
3. presser feet adjusting device according to claim 2, it is characterized in that, the second end of described mandrel (9) is positioned at described through hole, and the second end of described mandrel (9) is fixedly connected with nut (5), and described nut offers draw-in groove on (5).
4. presser feet adjusting device according to claim 1, is characterized in that, described core print seat (3) has groove that can accommodating described electromagnetic core (7) end, and the end of described electromagnetic core (7) is taper.
5. presser feet adjusting device according to claim 1, is characterized in that, also comprises the bracing or strutting arrangement being fixedly connected with described electromagnet (8), and described bracing or strutting arrangement comprises front support (2) and rear support (4).
6. presser feet adjusting device according to claim 1, it is characterized in that, described joint (10) comprises bearing (101) and the pedestal (102) being fixedly connected with the outer ring of described bearing (101), one end of described drive link (11) and described pedestal (102) are hinged, and described mandrel (9) is fixedly connected with the inner ring of described bearing (101).
7. presser feet adjusting device according to claim 1, is characterized in that, also comprises the back-moving spring being connected with one end away from described core print seat (3) of described electromagnetic core (7).
8. presser feet adjusting device according to claim 1, is characterized in that, on the inwall in the hole that the described mandrel of confession (9) of described core print seat (3) passes, is also embedded with antifriction ring.
9. a Sewing machines, comprises presser feet adjusting device, it is characterized in that, described presser feet adjusting device is the presser feet adjusting device as described in any one in claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410400545.1A CN104120552B (en) | 2014-08-13 | 2014-08-13 | Sewing machines and presser feet adjusting device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410400545.1A CN104120552B (en) | 2014-08-13 | 2014-08-13 | Sewing machines and presser feet adjusting device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104120552A true CN104120552A (en) | 2014-10-29 |
| CN104120552B CN104120552B (en) | 2016-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410400545.1A Expired - Fee Related CN104120552B (en) | 2014-08-13 | 2014-08-13 | Sewing machines and presser feet adjusting device thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN104120552B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108251977A (en) * | 2018-04-08 | 2018-07-06 | 苏州胜璟电磁科技有限公司 | It is a kind of apart from adjustable solenoid |
| CN108342844A (en) * | 2018-03-30 | 2018-07-31 | 苏州胜璟电磁科技有限公司 | A kind of use in sewing machine adjustable solenoid |
| CN108360166A (en) * | 2018-04-08 | 2018-08-03 | 苏州胜璟电磁科技有限公司 | A kind of adjustable electromagnet |
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| US5937775A (en) * | 1998-09-30 | 1999-08-17 | Ku; Fei-Lung | Sewing machine control device having electrically movable connecting band extending about roller for presser foot lifting |
| CN203536150U (en) * | 2013-11-20 | 2014-04-09 | 温州大学 | Large-travel solenoid electromagnet provided with microswitch |
| CN203807720U (en) * | 2014-03-28 | 2014-09-03 | 张翔瑜 | Built-in straight-pull electromagnet automatic presser foot lifter device |
| CN204000199U (en) * | 2014-08-13 | 2014-12-10 | 浙江方正电机股份有限公司 | Sewing machines and presser feet adjusting device thereof |
| CN104195753A (en) * | 2014-08-07 | 2014-12-10 | 浙江川田缝纫机有限公司 | Presser foot lifting mechanism of sewing machine |
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|---|---|---|---|---|
| US5937775A (en) * | 1998-09-30 | 1999-08-17 | Ku; Fei-Lung | Sewing machine control device having electrically movable connecting band extending about roller for presser foot lifting |
| CN203536150U (en) * | 2013-11-20 | 2014-04-09 | 温州大学 | Large-travel solenoid electromagnet provided with microswitch |
| CN203807720U (en) * | 2014-03-28 | 2014-09-03 | 张翔瑜 | Built-in straight-pull electromagnet automatic presser foot lifter device |
| CN104195753A (en) * | 2014-08-07 | 2014-12-10 | 浙江川田缝纫机有限公司 | Presser foot lifting mechanism of sewing machine |
| CN204000199U (en) * | 2014-08-13 | 2014-12-10 | 浙江方正电机股份有限公司 | Sewing machines and presser feet adjusting device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108342844A (en) * | 2018-03-30 | 2018-07-31 | 苏州胜璟电磁科技有限公司 | A kind of use in sewing machine adjustable solenoid |
| CN108251977A (en) * | 2018-04-08 | 2018-07-06 | 苏州胜璟电磁科技有限公司 | It is a kind of apart from adjustable solenoid |
| CN108360166A (en) * | 2018-04-08 | 2018-08-03 | 苏州胜璟电磁科技有限公司 | A kind of adjustable electromagnet |
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| Publication number | Publication date |
|---|---|
| CN104120552B (en) | 2016-03-16 |
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Granted publication date: 20160316 Termination date: 20190813 |