CN104562457B - Rear-mounted presser feet lifts pressure device - Google Patents
Rear-mounted presser feet lifts pressure device Download PDFInfo
- Publication number
- CN104562457B CN104562457B CN201410798954.1A CN201410798954A CN104562457B CN 104562457 B CN104562457 B CN 104562457B CN 201410798954 A CN201410798954 A CN 201410798954A CN 104562457 B CN104562457 B CN 104562457B
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- China
- Prior art keywords
- arm
- driving source
- presser feet
- lever
- sewing machine
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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
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/02—Mechanical drives
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The present invention provides a kind of rear-mounted presser feet lift pressure device, including driving source, activation lever, lifting connecting rod and presser feet arm；Driving source is fixed by driving source supporting plate and the outer wall of sewing machine case rear end, and driving source includes the telescopic shaft that fore-and-aft direction stretches；Activation lever is located at the top of driving source, including balance pivot, the first lever arm and the second lever arm, balance pivot and a support seat hinge, and support base is fixed on the outer wall of sewing machine case rear end；The end of first lever arm is flexibly connected with the end of telescopic shaft；Presser feet arm includes horizontal arm, the vertical linking arm above horizontal arm, and the inwall of the junction and sewing machine case front end of horizontal arm and vertical linking arm is hinged；Connecting rod is lifted inside sewing machine case, the one end and the end of vertical linking arm for lifting connecting rod are hinged, the end for lifting the other end of connecting rod and the second lever arm of activation lever is hinged.The present invention is easy to assembly or disassembly, and it is convenient to be provided for debugging, subsequent maintenance, maintenance.
Description
Technical field
The present invention relates to the presser feet of sewing machine lift pressure technical field, more particularly to a kind of rear-mounted presser feet lift pressure device.
Background technology
In the prior art, the lift pressure of sewing-machine foot is main is realized using two ways：One kind is to use motor belt motor motivation
Tool structure realizes the lift pressure of presser feet, and such mechanical structure is often extremely complex, it is necessary to configuration driven device, gear pair, cam etc.,
Make the parts of mechanical structure very many, cause the deployment cost of parts high, the workload of assembling and setting is also big, so as to control
Difficulty is also big, and very big difficulty is caused to follow-up maintenance.Also a kind of mode is to drive machinery using built-in air cylinder
Structure realizes the lift pressure of presser feet, and the inefficiency of this mode often has cylinder dynamics not enough, stably in actual use
Property difference the problems such as, in addition because cylinder needs the inside mounted in sewing machine case, whole sewing-machine foot is lifted the dress of pressure system
Match somebody with somebody and dismounting is difficult, be also unfavorable for follow-up maintenance.
The content of the invention
The shortcoming of prior art in view of the above, the technical problem to be solved in the present invention is to provide one kind to be easy to assembling
Pressure device is lifted with the rear-mounted presser feet of dismounting, to overcome the drawbacks described above of prior art.
In order to solve the above-mentioned technical problem, the present invention provides a kind of rear-mounted presser feet lift pressure device, including driving source, driving
Lever, lifting connecting rod and presser feet arm；
The driving source is fixed by driving source supporting plate and the outer wall of sewing machine case rear end, before the driving source includes
The flexible telescopic shaft of rear direction；
The activation lever is located at the top of the driving source, including balance pivot, the first lever arm and the second lever arm,
The balance pivot and a support seat hinge, the support base are fixed on the outer wall of sewing machine case rear end；First lever
The end of arm is flexibly connected with the end of the telescopic shaft；
The presser feet arm includes horizontal arm, the vertical linking arm above horizontal arm, the horizontal arm and vertical connection
The inwall of the junction of arm and sewing machine case front end is hinged；
The lifting connecting rod is inside sewing machine case, one end and the end of the vertical linking arm of the lifting connecting rod
Portion is hinged, and the end of the other end and the second lever arm of the activation lever of the lifting connecting rod is hinged.
Preferably, the driving source is cylinder, and the piston rod of the cylinder is the telescopic shaft of the driving source.
Preferably, the driving source is fixed with the driving source supporting plate by fastener, in the driving source supporting plate
Provided with the pilot hole for installing the driving source, the pilot hole is long lumbar hole.
Preferably, the end of the telescopic shaft is pitched provided with a U-shaped, and a bearing pin is provided between the two side of the U-shaped fork；Institute
The long lumbar hole that the first lever arm end is provided with a lower ending opening is stated, the long lumbar hole coordinates with the bearing pin, forms the first lever
The end of arm is flexibly connected with the flexible shaft end.
Preferably, the length of first lever arm is 2 times of the length of the second lever arm.
Preferably, the front of second lever arm is provided with after a caging bolt, the caging bolt and sewing machine case
The screwed hole at end coordinates, and a nut is additionally provided with the screw rod of the caging bolt.
As described above, the rear-mounted presser feet lift pressure device of the present invention, has the advantages that：
Driving source, activation lever are respectively positioned on the outside of sewing machine case rear end, make the coupling part of whole device almost complete
Portion is external, consequently facilitating assembly or disassembly, it is convenient to be provided for debugging, subsequent maintenance, maintenance；Overall structure is simple, it is empty to take
Between less, deployment cost it is low.
Brief description of the drawings
Fig. 1 is shown as the structural representation of the rear-mounted presser feet lift pressure device of the present invention.
Fig. 2 is shown as the rear-mounted presser feet of present invention lift pressure device and removes the structural representation after sewing machine case.
Fig. 3 is shown as the partial enlarged drawing of I views in Fig. 2.
Fig. 4 is shown as the partial enlarged drawing of II view in Fig. 2.
Fig. 5 is shown as the schematic front view of the rear-mounted presser feet lift pressure device of the present invention.
Fig. 6 is shown as the partial enlarged drawing of III view in Fig. 5.
Fig. 7 is shown as the partial enlarged drawing of IV view in Fig. 5.
Component label instructions
The driving source of 1 sewing machine case 100
The U-shaped of 110 telescopic shaft 120 is pitched
The activation lever of 130 bearing pin 200
The lever arm of 201 balance pivot 210 first
The lever arm of 211 long lumbar hole 220 second
The 300 lifting presser feet arms of connecting rod 400
The vertical linking arm of 410 horizontal arm 420
The support base of 500 driving source supporting plate 600
The caging bolt of 610 bearing pin 700
The limit base of 710 nut 800
810 bearing pins
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
Fig. 1 is referred to Fig. 7.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., is only used to
Coordinate the content disclosed in specification, so that those skilled in the art is understood with reading, being not limited to the present invention can be real
The qualifications applied, 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 influenceing effect of the invention that can be generated and the purpose that can reach, all should still it fall in disclosed skill
Art content is obtained in the range of covering.The upside of paper is upper direction when Fig. 5 is observed in following examples, under the downside of paper is
Direction, the left side of paper is rear direction, and the right side of paper is front direction.
In view of the lift pressure device of the sewing-machine foot of prior art, or driven using motor, complicated in mechanical structure, not only
Deployment cost is high, and the workload of assembling and setting is big, and very big difficulty is caused to subsequent maintenance maintenance；Using built-in air cylinder
Drive mechanism, not only inefficiency, stability are poor, and assembling and dismantle very inconvenient, are also unfavorable for subsequent maintenance
Maintenance.The present inventor designs a kind of rear-mounted presser feet lift pressure device, will lift the actuator and transmission mechanism of pressure device
The outside of sewing machine case rear end is arranged on, so that assembly or disassembly can be carried out by opening the case of sewing machine rear end, is made follow-up
Maintenance is very convenient, and overall structure is simple, so as to occupy little space and deployment cost is also low.
It will be described in detail below by specific embodiment to lift pressure device to the rear-mounted presser feet of the present invention.
As shown in Figure 1 and Figure 2, a kind of rear-mounted presser feet lift pressure device, including driving source 100, activation lever 200, lifting company
Bar 300 and presser feet arm 400.
As shown in Figure 1, shown in Figure 5, the driving source 100 passes through driving source supporting plate 500 and the outer wall of the rear end of sewing machine case 1
It is fixed, as shown in fig. 6, the driving source 100 includes the telescopic shaft 110 that fore-and-aft direction stretches.
As shown in Fig. 3, Fig. 6, the activation lever 200 be located at the driving source 100 top, including balance pivot 201,
First lever arm 210 and the second lever arm 220, the balance pivot 201 are a circular hole, and the balance pivot 201 passes through bearing pin
610 are hinged with a support base 600, and the support base 600 is fixed on the outer wall of the rear end of sewing machine case 1；First lever arm
210 end is flexibly connected with the end of the telescopic shaft 110.
As shown in Fig. 3, Fig. 6, the end of first lever arm 210 is flexibly connected with the end of the telescopic shaft 110
It can be realized by following structure：The end of the telescopic shaft 110 is provided with U-shaped fork 120, and the U-shaped is pitched between 120 two side
Provided with a bearing pin 130；The end of first lever arm 210 be provided with a lower ending opening long lumbar hole 211, the long lumbar hole 211 with
The bearing pin 130 coordinates.Certainly, the flexible connection can also be realized in other way, such as, then set a company
Bar, is hinged one end and the end of the first lever arm 210 of connecting rod, is hinged the end of the other end and telescopic shaft 110 of connecting rod,
The end of the first lever arm 210 and being flexibly connected for the end of the telescopic shaft 110 can equally be realized.
As shown in Fig. 4, Fig. 5, Fig. 7, the presser feet arm 400 includes horizontal arm 410, located at the vertical of the top of horizontal arm 410
Linking arm 420, the junction of the horizontal arm 410 and vertical linking arm 420 passes through bearing pin 810 and the front end of sewing machine case 1
Inwall is hinged.
As shown in Fig. 1, Fig. 3 to Fig. 7, the lifting connecting rod 300 is inside sewing machine case 1, the lifting connecting rod 300
One end and the end of the vertical linking arm 420 be hinged, the of the other end and the activation lever of the lifting connecting rod 300
The end of second lever arm 220 is hinged.
As shown in Fig. 2, Fig. 5 because lifting connecting rod 300 reaches front end always by the rear end of sewing machine case 1, length compared with
It is long, for the ease of installing, while avoiding lifting connecting rod 300 from producing larger vibration, the lifting connecting rod 300 in the course of the work
Middle part be additionally provided with least two limit bases 800, the limit base 800 is fixed on the inwall of the sewing machine case 1, the limit
The spacing hole coordinated on the seat 800 of position with lifting connecting rod is the long lumbar hole of above-below direction, to meet the lifting upper and lower of connecting rod 300
To motion.
The driving source 100 of the present invention is preferably by cylinder, then the piston rod of the cylinder is the driving source
Telescopic shaft 110.Certain driving source 100 can also use electromagnet structure, and linear motion is set in the inside of electromagnet
Iron core, then the iron core moved along a straight line can also as driving source 100 telescopic shaft 110.
The driving source 100 of the present invention can be fixed with the driving source supporting plate 500 by fastener, then the driving
Should be provided with the pilot hole for installing the driving source 100 in source supporting plate 500, the pilot hole is preferably long lumbar hole, in order to drive
The adjustment of the dynamic position of source 100, so that the high and low position of presser foot lifter is adjusted, makes the present invention be easy to adjustment and installation.
The length of first lever arm 210 of the present invention is preferably designed as being 2 times of the length of the second lever arm 220,
So that the power output of the activation lever 200 is larger, about twice of the driving force of the telescopic shaft 110 of driving source 100, so as to protect
The power for demonstrate,proving presser foot lifter is sufficiently large, it is to avoid driving force not enough causes the problem of presser foot lifter stability is poor.
The present invention is preferably additionally provided with a caging bolt 700, and the caging bolt 700 is located at second lever arm 220
Front, the caging bolt 700 and the screwed hole of the rear end of sewing machine case 1 coordinate, and are also set on the screw rod of the caging bolt 700
There is a nut 710, the nut 710 is tight against sewing machine case 1, to be risen to connection of the caging bolt 700 on sewing machine case 1
To locking effect.The swing progress of 700 pairs of caging bolt, second lever arm 220 is spacing, so that presser feet is pressed in lift
During highest lifting position limited, make the present invention be easy to after mounting debugging.
The present invention rear-mounted presser feet lift pressure device operation principle be：First, the telescopic shaft 110 of driving source 100 is in
Retracted mode, the first lever arm 210 of the activation lever 200 is under the drive of the telescopic shaft 110 of driving source 100, around lever
Fulcrum 201 (i.e. bearing pin 610) is swung in the position of rearmost end, correspondingly, the second lever arm 220 of the activation lever 200 around
Balance pivot 201 (i.e. bearing pin 610) is swung in position foremost, so as to drive lifting connecting rod 300, lifting connecting rod 300 drives again
Dynamic pressure pin arm 400, makes the horizontal arm 410 of presser feet arm 400 swing to the position of bottom around bearing pin 810, now, presser feet is in down
Pressure condition.When presser feet needs lifting, signal is sent to driving source 100, forward extends out the telescopic shaft 110 of driving source 100, institute
The first lever arm 210 for stating activation lever 200 is swung forward under the drive of telescopic shaft 110 around balance pivot 201, correspondingly,
Second lever arm 220 of the activation lever 200 is around balance pivot 201 (i.e. bearing pin 610) swing backward, by lifting connecting rod
300 driving presser feet arms 400, make the horizontal arm 410 of presser feet arm 400 be swung up around bearing pin 810, so as to realize the lifting of presser feet.
When presser feet needs to push, the telescopic shaft 110 of driving source 100 is set to bounce back again.
In summary, rear-mounted presser feet of the invention lift pressure device, driving source and activation lever are located at sewing machine case
The outside of rear end, makes the coupling part almost all of whole device external, consequently facilitating assembly or disassembly, for debugging, follow-up dimension
Repair, safeguard there is provided convenient；Rear-mounted presser feet lift pressure device overall structure of the invention is simple, space-consuming is few, deployment cost
It is low.So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (5)
1. a kind of rear-mounted presser feet lift pressure device, it is characterised in that including driving source（100）, activation lever（200）, lifting connect
Bar（300）With presser feet arm（400）；
The driving source（100）Pass through driving source supporting plate（500）With sewing machine case（1）The outer wall of rear end is fixed, described to drive
Dynamic source（100）The telescopic shaft stretched including fore-and-aft direction（110）；
The activation lever（200）Located at the driving source（100）Top, including balance pivot（201）, the first lever arm
（210）With the second lever arm（220）, the balance pivot（201）With a support base（600）It is hinged, the support base（600）Gu
Due to sewing machine case（1）The outer wall of rear end；
First lever arm（210）End and the telescopic shaft（110）End be flexibly connected, the telescopic shaft（110）
End provided with a U-shaped pitch（120）, the U-shaped fork（120）Two side between be provided with a bearing pin（130）；First lever
Arm（210）End is provided with the long lumbar hole of a lower ending opening（211）, the long lumbar hole（211）With the bearing pin（130）Coordinate, shape
Into the first lever arm（210）End and the telescopic shaft（110）The flexible connection of end；
The presser feet arm（400）Including horizontal arm（410）, located at horizontal arm（410）The vertical linking arm of top（420）, it is described
Horizontal arm（410）With vertical linking arm（420）Junction and sewing machine case（1）The inwall of front end is hinged；
The lifting connecting rod（300）Located at sewing machine case（1）Inside, the lifting connecting rod（300）One end with it is described vertical
Linking arm（420）End be hinged, the lifting connecting rod（300）The other end and the activation lever the second lever arm
（220）End be hinged.
2. rear-mounted presser feet lift pressure device according to claim 1, it is characterised in that：The driving source（100）For cylinder,
The piston rod of the cylinder is the telescopic shaft of the driving source（110）.
3. rear-mounted presser feet lift pressure device according to claim 1, it is characterised in that：The driving source（100）With it is described
Driving source supporting plate（500）Fixed by fastener, the driving source supporting plate（500）Provided with the installation driving source
（100）Pilot hole, the pilot hole be long lumbar hole.
4. rear-mounted presser feet lift pressure device according to claim 1, it is characterised in that：First lever arm（210）'s
Length is the second lever arm（220）2 times of length.
5. the rear-mounted presser feet lift pressure device according to any one of Claims 1-4, it is characterised in that：Second lever
Arm（220）Front be provided with a caging bolt（700）, the caging bolt（700）With sewing machine case（1）The screwed hole of rear end
Coordinate, the caging bolt（700）Screw rod on be additionally provided with a nut（710）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410798954.1A CN104562457B (en) | 2014-12-19 | 2014-12-19 | Rear-mounted presser feet lifts pressure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410798954.1A CN104562457B (en) | 2014-12-19 | 2014-12-19 | Rear-mounted presser feet lifts pressure device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104562457A CN104562457A (en) | 2015-04-29 |
| CN104562457B true CN104562457B (en) | 2017-07-14 |
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ID=53079487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410798954.1A Active CN104562457B (en) | 2014-12-19 | 2014-12-19 | Rear-mounted presser feet lifts pressure device |
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| CN (1) | CN104562457B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204370148U (en) * | 2014-12-19 | 2015-06-03 | 拓卡奔马机电科技有限公司 | Rear-mounted presser feet lifts pressure device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3939588B2 (en) * | 2002-05-13 | 2007-07-04 | Ｊｕｋｉ株式会社 | sewing machine |
| JP4335248B2 (en) * | 2006-10-26 | 2009-09-30 | Ｊｕｋｉ株式会社 | sewing machine |
| CN203807719U (en) * | 2013-12-25 | 2014-09-03 | 新杰克缝纫机股份有限公司 | Sewing machine and presser foot drive device thereof |
| CN203668641U (en) * | 2013-12-31 | 2014-06-25 | 浙江宝石机电股份有限公司 | Presser foot lifting mechanism of sewing machine |
| CN203855785U (en) * | 2014-05-23 | 2014-10-01 | 新杰克缝纫机股份有限公司 | Automatic presser foot uplifting device of sewing machine |
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2014
- 2014-12-19 CN CN201410798954.1A patent/CN104562457B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204370148U (en) * | 2014-12-19 | 2015-06-03 | 拓卡奔马机电科技有限公司 | Rear-mounted presser feet lifts pressure device |
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| CN104562457A (en) | 2015-04-29 |
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