CN206799920U - A kind of lift compression shear line mechanism of sewing machine - Google Patents
A kind of lift compression shear line mechanism of sewing machine Download PDFInfo
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- CN206799920U CN206799920U CN201720622368.0U CN201720622368U CN206799920U CN 206799920 U CN206799920 U CN 206799920U CN 201720622368 U CN201720622368 U CN 201720622368U CN 206799920 U CN206799920 U CN 206799920U
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- compression shear
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Abstract
The utility model provides a kind of lift compression shear line mechanism of sewing machine, belongs to sewing machine technique field.It solves the problems, such as that complicated existing for the driving structure of existing sewing machine and space-consuming is big.The lift compression shear line mechanism of this sewing machine, including motor, rotating shaft and driving crank, it is sheathed in the middle part of the driving crank on the outside of above-mentioned rotating shaft, one end of driving crank is used to be connected with presser feet lifting structure and upper thread cutting structure driven, the other end is used to be connected with bottom line trimming structure driven, gear one is fixed with the outside of the output shaft of described motor, have on above-mentioned driving crank can be driven with gear one the gear drive portion coordinated and driving crank can by above-mentioned motor driving and the axis around above-mentioned rotating shaft rotates.The lift compression shear line mechanism of this sewing machine has simple in construction and the advantages of occupy little space.
Description
Technical field
The utility model belongs to sewing machine technique field, is related to a kind of lift compression shear line mechanism of sewing machine.
Background technology
Electronics lockstitch button holder is one kind in sewing machine, and it passes through stepper motor control when forming tack keyhole lock-type chain stitch
Foot lifting mechanism processed, upper thread thread cutting mechanism, bottom line thread cutting mechanism etc..Existing electronics lockstitch button holder is generally to use three stepping electricity
Machine controls foot lifting mechanism, upper thread thread cutting mechanism, bottom line thread cutting mechanism respectively, and such keyhole Electrical Control control is more complicated, into
This is higher.
Fraternal Co., Ltd. devises button holing sewing machine and has applied for Chinese patent (its Application No.：
200710093790.2；Its Authorization Notice No. is：CN101058923B), the button holing sewing machine has：Driving machine above and below shank
Structure, it is driven to the shank for being provided with suture needle and the shank is moved up and down；Presser feet elevating mechanism, it makes presser feet transport up and down
It is dynamic；Tangent line part.
The button holing sewing machine devises common motor, and it comes to drive presser feet elevating mechanism, upper thread simultaneously via bindiny mechanism
Maintaining body and bottom line shut-off mechanism.Wherein, a pair of vertically extending guide rods are configured with above common motor,
Guiding lifter plate is provided with guide rod, the gear that common motor is formed by the gear on output shaft and lifter plate bottom is nibbled
Close, the branched portion formed by lifter plate upper end realizes power output, and is distinguished respectively by vertical bar and L-shaped connecting rod
Corresponding driving bottom line shut-off mechanism and presser feet elevating mechanism.However, the driving structure includes guide rod, lifter plate, branched portion
Complex etc. multiple structures, structure, manufacturing cost is higher, and space-consuming is big.
The content of the invention
The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, it is proposed that a kind of lift compression shear of sewing machine
Line mechanism, technical problem to be solved are the volumes for how simplifying driving structure and reducing driving structure.
The purpose of this utility model can be realized by following technical proposal：
A kind of lift compression shear line mechanism of sewing machine, including motor, rotating shaft and driving crank, the driving crank
Middle part is sheathed on the outside of above-mentioned rotating shaft, and one end of driving crank is used to cut structure driven company with presser feet lifting structure and upper thread
Connect, the other end is used to be connected with bottom line trimming structure driven, it is characterised in that is connected on the outside of the output shaft of described motor
There is gear one, there is the gear drive portion that can coordinate with the transmission of gear one on above-mentioned driving crank and driving crank can be by above-mentioned
The driving of motor and around above-mentioned rotating shaft axis rotate.
The lift compression shear line mechanism of sewing machine directly by the output power of motor by gear one and gear drive portion it
Between transmission coordinate be transferred at driving crank, then by driving crank both ends drive respectively presser feet lifting structure, upper thread cut
Structure and the action of bottom line trimming structure, so as to realize the cut-out of the lifting of presser feet and upper thread and bottom line.It is oriented to without setting
The structures such as bar, lifter plate, enormously simplify structure, reduce the volume and space-consuming of drive mechanism.
In the lift compression shear line mechanism of above-mentioned sewing machine, described gear drive portion there is driving cog and driving cog with it is upper
Gear one is stated to be meshed.Gear drive portion is directly engaged with gear one, drive mechanism is farthest simplified, simplifies transmission
Structure, reduce volume and space-consuming.
As another situation, in the lift compression shear line mechanism of above-mentioned sewing machine, described lift compression shear line mechanism also wraps
Jackshaft and idler gear are included, the idler gear is sheathed on the outside of above-mentioned jackshaft, and said gear driving section, which has, to be passed
Moving teeth, the idler gear are meshed with said gear one and gear drive portion simultaneously.As needed can be in gear one and gear
Idler gear is set between driving section, turned round for slow down increasing, relative to structures such as existing lifter plates, equally with structure
The advantages of simple and small volume.
In the lift compression shear line mechanism of above-mentioned sewing machine, described gear drive portion is sector gear, the sector gear
It is arranged at the sidepiece of above-mentioned driving crank and is connected as a single entity with above-mentioned driving crank.Because driving crank swing angle demand compared with
It is small, the structure of sector gear can be set to reduce space-consuming to reduce the volume in gear drive portion on driving crank.
As another situation, in the lift compression shear line mechanism of above-mentioned sewing machine, described gear drive portion is annular
Gear, the ring gear are sheathed on the outside of above-mentioned rotating shaft and are connected with above-mentioned driving crank.In view of gearratio and gear mass
The problem of product, ring gear also can be selected and be set in simultaneously on the outside of rotating shaft with driving crank, then by the end of ring gear with
Driving crank is fixedly connected with, and the partial volume of ring gear is superimposed with driving crank, reduces volume.
In the lift compression shear line mechanism of above-mentioned sewing machine, the gearratio between described gear one and gear drive portion is big
In 1.Gearratio is more than 1, can reduce the load of motor.
In the lift compression shear line mechanism of above-mentioned sewing machine, described driving crank is L-shaped, and the bending place of driving crank
It is sheathed on the outside of above-mentioned rotating shaft.The driving crank of L-shaped reduces driving crank for the driving crank of vertical bar shape
Length.
Compared with prior art, the output power of motor is directly passed through gear by the lift compression shear line mechanism of this sewing machine
Transmission between one and gear drive portion, which coordinates, to be transferred at driving crank, then drives presser feet liter respectively by driving crank both ends
Structure drops, upper thread cuts structure and the action of bottom line trimming structure, so as to realize cutting for the lifting of presser feet and upper thread and bottom line
It is disconnected, relative to the structures such as guide rod, lifter plate are set, structure is enormously simplify, reduces the volume of drive mechanism and takes empty
Between.
Brief description of the drawings
Fig. 1 is the structural representation of the lift compression shear line mechanism of this sewing machine.
Fig. 2 be this sewing machine lift compression shear line mechanism in enlarged drawing at driving crank.
Fig. 3 be this sewing machine lift compression shear line mechanism in driving crank structural representation.
In figure, 1, motor；2nd, rotating shaft；3rd, driving crank；3a, gear drive portion；3b, driving cog；4th, long connecting rod；5、
Presser feet lifting structure；6th, bottom line trimming structure；7th, gear one.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As depicted in figs. 1 and 2, the lift compression shear line mechanism of this sewing machine includes motor 1, horizontally disposed rotating shaft 2, passed
Dynamic crank 3 and long connecting rod 4.Wherein, driving crank 3 is L-shaped, and its bending place is sheathed on the outside of rotating shaft 2 and fixed with rotating shaft 2,
One end of driving crank 3 is cut structure driven with presser feet lifting structure 5 and upper thread and is connected, the upper end of the other end and long connecting rod 4
Be hinged, lower end and the bottom line trimming structure 6 of long connecting rod 4 are connected.
Gear 1 is fixed with the outside of the output shaft of motor 1, also has to be driven with gear 1 on driving crank 3 and matches somebody with somebody
The gear drive portion 3a and driving crank 3 of conjunction can be driven the driving of motor 1 and 2 axis turns around the shaft together with rotating shaft 2
It is dynamic.In the present embodiment, gear drive portion 3a is sector gear, and the sector gear is arranged at driving crank 3 towards gear 1
Side and be connected as a single entity with driving crank 3, the driving cog 3b on sector gear be meshed with gear 1 and gear 1 with it is fan-shaped
Gearratio between gear is more than 1.
The output power of motor 1 is directly passed through gear 1 and and gear by the lift compression shear line mechanism of this sewing machine
One 7 sector gears being meshed are transferred at driving crank 3, then drive presser feet lifting structure respectively by the both ends of driving crank 3
5th, upper thread cuts structure and long connecting rod 4 acts, so as to realize the cut-out of the lifting of presser feet and upper thread and bottom line, without setting
The structures such as guide rod, lifter plate, enormously simplify structure, reduce the volume and space-consuming of drive mechanism.
In addition to above technical scheme, gear drive portion 3a can also be ring gear, and the ring gear is sheathed on rotating shaft 2
Outside and it is connected by fastener and driving crank 3；And increase situation about turning round in view of slowing down, also settable jackshaft and centre
Gear, idler gear are sheathed on the outside of jackshaft, and idler gear is meshed with gear 1 and sector gear simultaneously.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (7)
1. a kind of lift compression shear line mechanism of sewing machine, including motor (1), rotating shaft (2) and driving crank (3), the biography
Be sheathed in the middle part of dynamic crank (3) on the outside of above-mentioned rotating shaft (2), one end of driving crank (3) be used for presser feet lifting structure (5) with
And upper thread cuts structure driven connection, the other end is used to be connected with bottom line trimming structure (6), it is characterised in that described
Gear one (7) is fixed with the outside of the output shaft of motor (1), having on above-mentioned driving crank (3) can be driven with gear one (7)
The gear drive portion (3a) of cooperation and driving crank (3) can by above-mentioned motor (1) driving and around above-mentioned rotating shaft (2)
Axis rotates.
2. the lift compression shear line mechanism of sewing machine according to claim 1, it is characterised in that described gear drive portion (3a)
It is meshed with driving cog (3b) and driving cog (3b) with said gear one (7).
3. the lift compression shear line mechanism of sewing machine according to claim 1, it is characterised in that described lift compression shear line mechanism is also
Including jackshaft and idler gear, the idler gear is sheathed on the outside of above-mentioned jackshaft, said gear driving section (3a)
With driving cog (3b), the idler gear is meshed with said gear one (7) and gear drive portion (3a) simultaneously.
4. the lift compression shear line mechanism of the sewing machine according to claim 1 or 2 or 3, it is characterised in that described gear drive
Portion (3a) is sector gear, and the sector gear is arranged at the sidepiece of above-mentioned driving crank (3) and is linked as with above-mentioned driving crank (3)
One.
5. the lift compression shear line mechanism of the sewing machine according to claim 1 or 2 or 3, it is characterised in that described gear drive
Portion (3a) is ring gear, and the ring gear is sheathed on the outside of above-mentioned rotating shaft (2) and is connected with above-mentioned driving crank (3).
6. the lift compression shear line mechanism of the sewing machine according to claim 1 or 2 or 3, it is characterised in that described gear one
(7) gearratio between gear drive portion (3a) is more than 1.
7. the lift compression shear line mechanism of the sewing machine according to claim 1 or 2 or 3, it is characterised in that described driving crank
(3) it is L-shaped, and the bending place of driving crank (3) is sheathed on the outside of above-mentioned rotating shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720622368.0U CN206799920U (en) | 2017-05-31 | 2017-05-31 | A kind of lift compression shear line mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720622368.0U CN206799920U (en) | 2017-05-31 | 2017-05-31 | A kind of lift compression shear line mechanism of sewing machine |
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| Publication Number | Publication Date |
|---|---|
| CN206799920U true CN206799920U (en) | 2017-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720622368.0U Active CN206799920U (en) | 2017-05-31 | 2017-05-31 | A kind of lift compression shear line mechanism of sewing machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233260A (en) * | 2018-03-09 | 2018-06-29 | 山东送变电工程有限公司 | A kind of unmanned plane automatic wiring break wire device |
| CN109722797A (en) * | 2019-03-23 | 2019-05-07 | 浙江美机缝纫机有限公司 | A kind of thread-trimming lifter-presser foot mechanism of sewing machine |
-
2017
- 2017-05-31 CN CN201720622368.0U patent/CN206799920U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233260A (en) * | 2018-03-09 | 2018-06-29 | 山东送变电工程有限公司 | A kind of unmanned plane automatic wiring break wire device |
| CN108233260B (en) * | 2018-03-09 | 2023-10-27 | 山东送变电工程有限公司 | Automatic overhead line wire-breaking device of unmanned aerial vehicle |
| CN109722797A (en) * | 2019-03-23 | 2019-05-07 | 浙江美机缝纫机有限公司 | A kind of thread-trimming lifter-presser foot mechanism of sewing machine |
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