CN108796842A - The auxiliary device and sewing machine of presser foot lifter - Google Patents
The auxiliary device and sewing machine of presser foot lifter Download PDFInfo
- Publication number
- CN108796842A CN108796842A CN201710286702.4A CN201710286702A CN108796842A CN 108796842 A CN108796842 A CN 108796842A CN 201710286702 A CN201710286702 A CN 201710286702A CN 108796842 A CN108796842 A CN 108796842A
- Authority
- CN
- China
- Prior art keywords
- spanner
- presser foot
- foot lifter
- auxiliary device
- elastic component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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 present invention provides a kind of auxiliary device and sewing machine of presser foot lifter, presser foot component is driven to be lifted by pushing spanner in sewing machine, one end rotational positioning of spanner is connected on the casing of sewing machine and by transmission component with presser foot component, the other end of spanner is as driving end, required pressure when for bearing presser foot component lifting, the auxiliary device includes the elastic component that one end is connected with casing, and the force transmission element being connected with the elastic component other end, the force transmission element is connected with the spanner and gives spanner one driving force, when non-presser foot lifter, that is, spanner is in original state, the driving force is directed toward the rotation center of the spanner, when the driving end compression of the i.e. spanner is rotated during presser foot lifter, the driving force direction that the force transmission element gives spanner changes and provides torque identical with the spanner direction of rotation.The present invention can mitigate lift pressure spanner power, save use cost in presser foot lifter.
Description
Technical field
The present invention relates to sewing machine technique fields, more particularly to the auxiliary device and sewing machine of a kind of presser foot lifter.
Background technology
In existing sewing machine, presser foot lifter structure by spanner pushing generally by achieving the purpose that presser foot component is promoted.At present
The mode of presser foot lifter in the market is general to be divided to two kinds, and a kind of to be lifted presser feet for the artificial spanner that pushes, one kind is automatic needle-foot-lifting.
Since the foot pressure of technological requirement industrial sewing machine is larger, causes the power of lift pressure spanner heavier, will increase work if artificial lift
The labor intensity of people, if that can increase cost with automatic needle-foot-lifting, electromagnet the problem of there is also fever and short lifes.
As Chinese patent 201611267173.5 discloses a kind of sewing machine with new type auto presser foot lifter structure；Include
Automatic needle-foot-lifting device is provided with holding meanss, the holding on the outline border of the presser feet electromagnet of the automatic needle-foot-lifting device
Device is resisted against when presser feet electromagnet core stretches out on the outer wall of presser feet electromagnet core；When presser feet electromagnet core is attracted
It is fastened on the end face of presser feet electromagnet core.That application discloses a kind of automatic needle-foot-lifting structures, real by presser feet electromagnet
Showed automatic needle-foot-lifting, but during presser foot lifter, the driving force of presser foot lifter completely by presser feet solenoid actuated, when need compared with
When spanner power is pressed in big lift, presser feet electromagnet easily generates heat, and influences its service life.
Therefore, it is necessary to a kind of auxiliary devices for mitigating presser foot lifter and driving spanner rotary force in the process.
Invention content
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of auxiliary devices of presser foot lifter
And sewing machine, make very much presser foot lifter cost is larger to ask greatly needed for spanner power for solving to drive during presser foot lifter in the prior art
Topic.
In order to achieve the above objects and other related objects, the present invention provides a kind of auxiliary device of presser foot lifter, sewing machine
In drive presser foot component to be lifted by pushing spanner, one end rotational positioning of spanner on the casing of sewing machine and passes through transmission
Component is connected with presser foot component, and the other end of spanner is as driving end, required pressure, institute when for bearing presser foot component lifting
It includes the elastic component that one end is connected with casing to state auxiliary device, and the force transmission element being connected with the elastic component other end, the power transmission
Part is connected with the spanner and gives spanner one driving force, when non-presser foot lifter, that is, spanner is in original state, the driving force
It is directed toward the rotation center of the spanner, when the driving end compression of the i.e. spanner is rotated during presser foot lifter, the biography
The driving force direction that power part gives spanner changes and provides torque identical with the spanner direction of rotation.
Preferably, the force transmission element is the limit card board being rotatably arranged on casing, one end of the limit card board and institute
It states elastic component to be connected, the other end of the limit card board is connected with the driving end of the spanner.
Preferably, there is a positioning pin, the other end of the limit card board to have an arc on the driving end of the spanner
Face, the arcwall face conflict can be slided on the positioning pin along positioning pin.
Preferably, the elastic component is tension spring, and one end that the elastic component is connected with the casing is located at the limiting card
The top of plate, the rotation center of the limit card board are located at the lower section of the spanner.
Preferably, the elastic component is tension spring, compression spring or torsional spring.
Preferably, the force transmission element is the extension that extends to form of one end of the spanner, has arc on the extension
One end of shape slot, the elastic component is connected by positioning plate with the casing, and the other end of the elastic component is connected with a locating shaft,
The locating shaft is slidably disposed in the arc groove.
Preferably, the positioning plate has elongated slot, has the locating piece being connected with casing in elongated slot.
Preferably, one end that the elastic component is connected with the casing is located at the top of the spanner, and the arc groove is
Reclinate sliding slot.
Preferably, the initiating terminal of the arc groove needs to meet：When spanner is in original state, the locating shaft is located at institute
It states at the initiating terminal of arc groove, and the center line of the elastic component and the rotation center of the spanner are located along the same line.
The present invention provides a kind of sewing machine, and the sewing machine has the auxiliary device of presser foot lifter as described above.
As described above, the auxiliary device and sewing machine of the presser foot lifter of the present invention, have the advantages that：Using pulling
Auxiliary device is set at hand, and the elastic component in auxiliary device gives spanner one driving force by force transmission element, and when non-presser foot lifter, should
Driving force is directed toward the rotation center of the spanner, does not influence the original state of spanner；And force direction is driven to change during presser foot lifter
It is that force transmission element provides torque identical with the spanner direction of rotation to become, i.e. it is additional dynamic to become spanner rotates one for the driving force
Power is finally reached the effect for mitigating lift pressure spanner power.
Description of the drawings
Fig. 1 is shown as the first embodiment schematic diagram of the auxiliary device of the presser foot lifter of the present invention.
Fig. 2 is shown as state diagram when the non-presser foot lifter of auxiliary device first embodiment of the presser foot lifter of the present invention.
Fig. 3 is shown as the state diagram when auxiliary device first embodiment presser foot lifter of the presser foot lifter of the present invention.
Fig. 4 is shown as the schematic diagram of non-presser foot lifter state shown in Fig. 2.
Fig. 5 is shown as the schematic diagram of presser foot lifter state shown in Fig. 3.
Fig. 6 is shown as the second embodiment schematic diagram of the auxiliary device of the presser foot lifter of the present invention.
Fig. 7 is shown as state diagram when the non-presser foot lifter of auxiliary device second embodiment of the presser foot lifter of the present invention.
Fig. 8 is shown as the state diagram when auxiliary device second embodiment presser foot lifter of the presser foot lifter of the present invention.
Fig. 9 is shown as the schematic diagram of non-presser foot lifter state shown in Fig. 7.
Figure 10 is shown as the schematic diagram of presser foot lifter state shown in Fig. 8.
Component label instructions
1 spanner
2 transmission components
3 presser foot components
4 positioning plates
41 installation sliding slots
5 tension springs
6 limit card boards
61 rotating dogs
601 arcwall faces
7 positioning pins
8 tension springs
9 positioning plates
91 elongated slots
92 locating pieces
10 locating shafts
11 rotation axis
12 driving ends
13 holders
100 casings
101 arc grooves
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this explanations by particular specific embodiment below
Content disclosed by book understands other advantages and effect of the present invention easily.
It please refers to Fig.1 to Figure 10.It should be clear that structure, ratio, size etc. depicted in this specification institute accompanying drawings, are only used
To coordinate the revealed content of specification, so that those skilled in the art understands and reads, being not limited to the present invention can
The qualifications of implementation, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, should all still fall in disclosed skill
In the range of art content can cover.Meanwhile in this specification it is cited as "upper", "lower", "left", "right", " centre " and
The term of " one " etc. is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, relativeness
It is altered or modified, in the case where changing technology contents without essence, when being also considered as the enforceable scope of the present invention.
As shown in Figures 1 to 6, the present invention provides a kind of auxiliary device of presser foot lifter, passes through pushing spanner 1 in sewing machine
And presser foot component 3 is driven to be lifted, one end rotational positioning of spanner 1 on the casing 100 of sewing machine and passes through transmission component 2 and pressure
Foot component 3 is connected, and the other end of spanner 1 is described for bearing pressure required when presser foot component 3 is lifted as driving end 12
Auxiliary device includes the elastic component that one end is connected with casing 100, and the force transmission element being connected with the elastic component other end, the power transmission
Part is connected with the spanner and gives spanner one driving force, when non-presser foot lifter, that is, spanner is in original state, the driving force
It is directed toward the rotation center of the spanner, when the driving end compression of the i.e. spanner is rotated during presser foot lifter, the biography
The driving force direction that power part gives spanner changes and provides torque identical with the spanner direction of rotation.The present invention is used and is being pulled
Auxiliary device is set at hand 1, the elastic component in auxiliary device gives spanner one driving force by force transmission element, and when non-presser foot lifter,
The driving force is directed toward the rotation center of spanner 1, does not influence the original state of spanner；And force direction is driven to change during presser foot lifter
I.e. force transmission element provides torque identical with spanner direction of rotation, i.e. the driving force becomes an additional power of spanner rotation, finally
Achieve the effect that mitigate lift pressure spanner power.
As shown in Figures 1 to 6, it is the specific embodiment of the present invention, the force transmission element in the present embodiment is to be rotatably arranged on
Limit card board 6 on casing 100, limit card board 6 is connected by rotating dog 61 with casing 100 in the present embodiment, and rotating dog 61 is
The rotation center of limit card board；One end of limit card board 6 is connected with elastic component, the driving of the other end and spanner 1 of limit card board 6
End is connected.The present embodiment by the way that limit card board 6 is arranged at the driving end of spanner 1, by 6 power transmission of limit card board given by above-mentioned elastic component
Spanner 1 then realizes the external force used in driving spanner 1 when reducing presser foot lifter.
Elastic component is tension spring 5 in the present embodiment, and one end that tension spring 5 is connected with casing 100 is located at the top of limit card board 6,
The rotation center of the limit card board 6 is located at the lower section of the spanner 1.In the present embodiment a driving force is provided by tension spring 5
So that limit card board is rotated to limit card board 6, and then the other end of limit card board 6 is made to give spanner 1 one driving force.It is preferably real
Existing limit card board 6 acts on spanner 1, has a positioning pin 7 on the driving end of above-mentioned spanner 1 in the present embodiment, limit card board 6
There is the other end arcwall face 601, the conflict of the arcwall face 601 can be slided along positioning pin 7 on the positioning pin 7, this implementation
In example limit card board 6 with positioning pin 7 is tangent contacts.
The specific work process of the present embodiment is as follows：When non-presser foot lifter, see shown in Fig. 2 and Fig. 4, at tension spring 5
In tensional state, tension spring itself has elastic force F2, provides an initial torque to limit card board 6, so that it is tightly pressed at and pull
On the positioning pin 7 of hand 1, and then an initial driving force, i.e., the power F in figure are provided to spanner 1, but the direction of power F refers at this time
To on the rotation center of spanner 1, that is, it is directed toward at the center of the rotation axis 11 of spanner, as shown in Figure 2, therefore does not interfere with spanner 1
Original state.During presser foot lifter, see shown in Fig. 3 and Fig. 5, since the driving end of spanner 1 is turned downwards by the effect of pressure F1
It is dynamic, at this point, limit card board 6 and the phase section of the positioning pin 7 of spanner 1 change, limit card board 6 is caused to give the drive of spanner 1
The direction of power F changes, and is changed to point to the lower section of 1 rotation center of spanner, and limit card board 6 can provide one to spanner 1 at this time
It is a that the identical torque of rotation direction is pushed with spanner, in Fig. 5 spanner pushing rotate counterclockwise, then limit card board 6 gives spanner 1 one
A anticlockwise moment is finally reached the effect for mitigating lift pressure spanner power, i.e., so the torque that spanner 1 rotates down will reduce
Reduce pressure F1.I.e. during presser foot lifter, mitigates manpower or automatic needle-foot-lifting device gives the driving force of spanner, reach light
The purpose of loose presser foot lifter.
For the elastic component in the present embodiment can also be compression spring or torsional spring or other can give limit 6 elastic force of plate
Have elastically-deformable object.If the elastic component in the present embodiment is compression spring, installation position can be set to above-mentioned
At the mirror position of tension spring 5, only need it that can give limit one elastic force of plate, and the elastic force makes limit plate 6 give the drive of spanner 1 one
Power, and in non-presser foot lifter, which is directed toward the rotation center of spanner, and force direction transformation, limit are driven during presser foot lifter
Position plate gives spanner one driving moment identical with spanner direction of rotation.
Its connection type with spanner of limit plate 6 in the present embodiment may be other modes, be not limited to arc
Shape face 601 contradicts the form on positioning pin 7, such as it can be that arc groove is arranged on the driving end of spanner 1, make limiting plate
Part 6 is inserted into arc groove by structures such as protrusions by acts power to spanner.That is, only need can be by the bullet of elastic component
Power indirect transfer is to the driving end of spanner, and when driving force of giving spanner is initial is directed toward the rotation center of spanner, in presser foot lifter
Driving force direction changes in the process, gives spanner one rotating torque identical with spanner rotation direction, and then mitigates spanner lift pressure
External force needed for foot.
Tension spring 5 in the present embodiment is connected by positioning plate 4 with casing 100, has installation sliding slot 41 on positioning plate 4, fixed
Position screw, which is fixed in installation sliding slot 41, is connected positioning plate 4 with casing 100, realizes the activity installation of positioning plate 4, tension spring 5
One end is hung on positioning plate 4, and the other end of tension spring 5 is hung on above-mentioned limit plate 6.
As shown in Figure 7 to 10, it is the another specific embodiment of the present invention, above-mentioned force transmission element is above-mentioned pulls in the present embodiment
The extension that one end (the driving end 12 of the end and spanner 1 is opposite end) of hand 1 extends to form has arc groove on extension
101, one end of the elastic component is connected by positioning plate 9 with casing 100, and the other end of elastic component is connected with a locating shaft 10, fixed
Position axis 10 is slidably disposed in the arc groove 101.By the way that arc is arranged at the end opposite with the driving end of spanner in the present embodiment
Slot, and then realize that elastic component gives spanner driving force, to realize during presser foot lifter, spanner is generated and spanner rotation direction
Identical rotating torque.Elastic component in the present embodiment is tension spring 8, and one end that tension spring 8 is connected with the casing 100 is located at described
The top of spanner 1, the arc groove 101 are reclinate sliding slot, as shown in Figure 6.When preferably to realize non-presser foot lifter, bullet
Property part does not influence the state of spanner, and the initiating terminal of above-mentioned arc groove 101 needs to meet：When spanner 1 is in original state, positioning
Axis 10 is located at the initiating terminal of the arc groove 101, sees shown in Fig. 7 and Fig. 9, and the center line of elastic component (i.e. tension spring 8) with pull
The rotation center of hand 1 is located along the same line.
The specific work process of the present embodiment is as follows：When non-presser foot lifter, see shown in Fig. 7 and Fig. 9, is drawn since tension spring 8 is in
State is stretched, so providing a pulling force F to locating shaft 10, since locating shaft 10 is in the arc groove 101 of spanner 1, and then is pulled
Hand 1 provides above-mentioned pulling force F, but the direction of pulling force F therefore does not interfere with the state of spanner 1 via the rotation center of spanner 1 at this time.
During presser foot lifter, see shown in Fig. 8 and Figure 10, rotates down since the driving end of spanner 1 receives pressure F1 and counterclockwise, this
When, so that locating shaft 10 and tension spring 8 is gradually contracted at a distance from 100 connecting place of casing since the arc groove 101 of spanner 1 moves up
It is short, that is, tension spring 8 can shorten, and cause locating shaft 10 that can arcuately slot 101 slide to the right, the power for giving spanner 1 to provide at this time
Direction can deviate, spanner 1 can be given to provide a torque counterclockwise, as shown in Figure 10, finally alleviate driving spanner 1
Pressure F1.
Above-mentioned positioning plate 9 in the present embodiment has elongated slot 91, has be connected with casing 100 as shown in Figure 6, in elongated slot 91
Locating piece 92, the setting of elongated slot 91 more ensures that the other end of tension spring 8 is pressed in lift convenient for one end of positioning plate Locating extension spring 8
Arcuately slot 101 slides during foot.
Elastic component in the present embodiment may be compression spring or torsional spring, may be other with elastic deformation and offer
The object of elastic force.If the elastic component in the present embodiment is compression spring, set-up mode can be arranged with above-mentioned tension spring mirror image, i.e., by compression spring
It is placed in the lower section of spanner, and the corresponding back-flexing in direction of above-mentioned arc groove.
Force transmission element in the present embodiment is the extension of above-mentioned spanner, i.e., is integrated with spanner, may be and pull
The parts of hand separation only need it that can accurately act on the elastic force of elastic component to spanner, do not influence spanner when meeting non-presser foot lifter
Original state, and contribute to the rotation of spanner when presser foot lifter.
The present invention provides a kind of sewing machine, and the sewing machine has the auxiliary device of presser foot lifter as described above, can
With using above-mentioned auxiliary device come required presser foot lifter power when mitigating presser foot lifter, with save when entire sewing machine uses at
This.It is preferably to drive and keep above-mentioned spanner 1 in the present embodiment, as shown in Figure 6, holder 13 is equipped on casing 100, is pulled
Hand is placed in the retention groove of holder 13, and the rotating distance of spanner 1 is limited by retention groove.
In conclusion the present invention presser foot lifter auxiliary device and sewing machine, using at spanner be arranged auxiliary device,
Elastic component in auxiliary device gives spanner one driving force by force transmission element, and when non-presser foot lifter, is pulled described in driving force direction
The rotation center of hand does not influence the original state of spanner；And presser foot lifter during drive force direction change be force transmission element provide with
The identical torque in the spanner direction of rotation, the i.e. driving force become an additional power of spanner rotation, are finally reached mitigation lift
Press the effect of spanner power.So the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.
Claims (10)
1. a kind of auxiliary device of presser foot lifter, presser foot component is driven to be lifted by pushing spanner in sewing machine, the one of spanner
End rotational positioning is connected on the casing of sewing machine and by transmission component with presser foot component, and the other end of spanner is as driving
End, required pressure when for bearing presser foot component lifting, which is characterized in that the auxiliary device includes that one end is connected with casing
Elastic component, and the force transmission element that is connected with the elastic component other end, the force transmission element be connected with the spanner and give spanner one
Driving force, when non-presser foot lifter, that is, spanner is in original state, the driving force is directed toward the rotation center of the spanner, when lift is pressed
I.e. the driving end of the spanner is pressurized when being rotated during foot, the driving force direction that the force transmission element gives spanner change and
Torque identical with the spanner direction of rotation is provided.
2. the auxiliary device of presser foot lifter according to claim 1, it is characterised in that：The force transmission element is to be rotatably arranged on
Limit card board on casing, one end of the limit card board are connected with the elastic component, the other end of the limit card board and institute
The driving end for stating spanner is connected.
3. the auxiliary device of presser foot lifter according to claim 2, it is characterised in that：Have on the driving end of the spanner
The other end of one positioning pin, the limit card board has an arcwall face, and the arcwall face is contradicted can be along fixed on the positioning pin
Position pin sliding.
4. the auxiliary device of presser foot lifter according to claim 3, it is characterised in that：The elastic component is tension spring, described
One end that elastic component is connected with the casing is located at the top of the limit card board, and the rotation center of the limit card board is located at institute
State the lower section of spanner.
5. the auxiliary device of presser foot lifter according to claim 1, it is characterised in that：The elastic component is tension spring, compression spring
Or torsional spring.
6. the auxiliary device of presser foot lifter according to claim 1, it is characterised in that：The force transmission element is the spanner
The extension that one end extends to form, has arc groove on the extension, one end of the elastic component by positioning plate with it is described
Casing is connected, and the other end of the elastic component is connected with a locating shaft, and the locating shaft is slidably disposed in the arc groove.
7. the auxiliary device of presser foot lifter according to claim 6, it is characterised in that：The positioning plate has elongated slot, long
There is the locating piece being connected with casing in slot.
8. the auxiliary device of presser foot lifter according to claim 6, it is characterised in that：The elastic component and the casing phase
One end even is located at the top of the spanner, and the arc groove is reclinate sliding slot.
9. the auxiliary device of presser foot lifter according to claim 6, it is characterised in that：The initiating terminal of the arc groove need to expire
Foot：When spanner is in original state, the locating shaft is located at the initiating terminal of the arc groove, and the center of the elastic component
The rotation center of line and the spanner is located along the same line.
10. a kind of sewing machine, it is characterised in that：The sewing machine has the presser foot lifter as described in claim 1 to claim 9
Auxiliary device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286702.4A CN108796842B (en) | 2017-04-27 | 2017-04-27 | Auxiliary device for lifting presser foot and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286702.4A CN108796842B (en) | 2017-04-27 | 2017-04-27 | Auxiliary device for lifting presser foot and sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108796842A true CN108796842A (en) | 2018-11-13 |
| CN108796842B CN108796842B (en) | 2020-10-09 |
Family
ID=64069717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710286702.4A Active CN108796842B (en) | 2017-04-27 | 2017-04-27 | Auxiliary device for lifting presser foot and sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108796842B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281073A (en) * | 2018-11-16 | 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4388886A (en) * | 1981-12-17 | 1983-06-21 | The Singer Company | Reduced load presser bar |
| JPS6320153B2 (en) * | 1984-09-29 | 1988-04-26 | Tokyo Juki Industrial Co Ltd | |
| JPH05154260A (en) * | 1991-02-19 | 1993-06-22 | Juki Corp | Perssing type raising/lowering device |
| DE3530731C2 (en) * | 1984-08-28 | 1993-08-05 | Tokyo Juki Industrial Co., Ltd., Chofu, Tokio/Tokyo, Jp | |
| JPH0767512B2 (en) * | 1988-06-02 | 1995-07-26 | ペガサスミシン製造株式会社 | Presser foot lifting assist device |
| CN203947281U (en) * | 2014-07-16 | 2014-11-19 | 杰克缝纫机股份有限公司 | Casing head is established the Sewing machines of foot lifting mechanism |
| CN204919000U (en) * | 2015-10-28 | 2015-12-30 | 浙江美机缝纫机有限公司 | Sewing machine lifts presser foot device |
-
2017
- 2017-04-27 CN CN201710286702.4A patent/CN108796842B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4388886A (en) * | 1981-12-17 | 1983-06-21 | The Singer Company | Reduced load presser bar |
| DE3530731C2 (en) * | 1984-08-28 | 1993-08-05 | Tokyo Juki Industrial Co., Ltd., Chofu, Tokio/Tokyo, Jp | |
| JPS6320153B2 (en) * | 1984-09-29 | 1988-04-26 | Tokyo Juki Industrial Co Ltd | |
| JPH0767512B2 (en) * | 1988-06-02 | 1995-07-26 | ペガサスミシン製造株式会社 | Presser foot lifting assist device |
| JPH05154260A (en) * | 1991-02-19 | 1993-06-22 | Juki Corp | Perssing type raising/lowering device |
| CN203947281U (en) * | 2014-07-16 | 2014-11-19 | 杰克缝纫机股份有限公司 | Casing head is established the Sewing machines of foot lifting mechanism |
| CN204919000U (en) * | 2015-10-28 | 2015-12-30 | 浙江美机缝纫机有限公司 | Sewing machine lifts presser foot device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281073A (en) * | 2018-11-16 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108796842B (en) | 2020-10-09 |
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