CN209636467U - A kind of power transfer mechanism and sewing machine - Google Patents
A kind of power transfer mechanism and sewing machine Download PDFInfo
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- CN209636467U CN209636467U CN201822036586.3U CN201822036586U CN209636467U CN 209636467 U CN209636467 U CN 209636467U CN 201822036586 U CN201822036586 U CN 201822036586U CN 209636467 U CN209636467 U CN 209636467U
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- driving crank
- trimming
- transfer mechanism
- transfering part
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Abstract
The utility model belongs to sewing device technical field, is related to a kind of power transfer mechanism and sewing machine.The utility model solves the problems such as assembly difficulty in the prior art is larger, assembly efficiency is low.This power transfer mechanism includes shear spool, spacer sleeve is equipped with back knife driving crank and trimming driving crank on shear spool, knife driving crank is returned to be fixed on shear spool, trimming driving crank is slidably matched with shear spool, there is the boss radially extended towards shear spool on this time knife driving crank, there is power transfering part one, trimming, which drives, has power transfering part two on crank, power transfering part one is connected with power transfering part two and the cooperation that slides axially on boss.Power transfering part two is designed at back on the radial boss of knife driving crank by the application, compared with the prior art needs for be inserted into sliding pin the axial groove scheme of fixing sleeve right end, with bigger assembly space when installation, and it is good to assemble the visual field, assembly difficulty is lower, and assembly efficiency can be improved.
Description
Technical field
The utility model belongs to sewing device technical field, is related to a kind of power transfer mechanism and sewing machine.
Background technique
It needs to meet in certain mechanism structures, between axis and the installation part being mounted on an axle claimed below: axis and installation
It can the axially opposing sliding along axis and achievable torque transmitting between axis and installation part between part.
A kind of trimming driving assembly, thread cutting mechanism as disclosed in 108385293 A of China patent CN and sewing machine, power
Transmission mechanism includes shear spool, trimming driving crank, drive shaft and driving cam；Forced resetting arm is fixed on shear spool；It cuts
Line driving crank is set on shear spool, and is slidably connected by being slidably connected structure with shear spool, and drive is fixed in drive shaft
Moving cam, driving cam includes forced resetting portion and driving portion；Trimming drives driving portion of the crank in trimming with driving cam
Profile face contact；Forced resetting portion is opposite with forced resetting arm position, and when normal reset non-for shear spool passes through reset portion
Contact with reset arm carries out forced resetting.
The specific structure that wherein trimming drives crank to be slidably connected with shear spool is as follows: such as above-mentioned patent specification the 52nd
Duan Suoshu is provided with axial groove on the right side of fixing sleeve, sliding pin is equipped on trimming driving crank, and sliding pin and axial groove slide
Cooperation, to realize being slidably connected for shear spool.And as other alternative solutions, such as the 57th section of above-mentioned patent specification, 58
Duan Suoshu, sliding pin and axial groove are slidably matched, and the mode of plane and plane cooperation also can be used, sliding pin can also be arranged
On fixing sleeve or reset arm, and axial groove correspondingly is opened up on trimming driving crank.
But since the assembly space in sewing machine is smaller, and power transfer mechanism is during installation, needs first by reset spring
It is set on the right side of fixing sleeve, then trimming driving crank is set on shear spool, and wear the sliding pin on trimming driving crank
It crosses in the axial groove that reset spring is plugged on the right side of fixing sleeve, reset spring not only will affect assembly sight, can also make assembly empty
Between it is smaller, to improve assembly difficulty, reduce assembly efficiency.
Utility model content
The purpose of this utility model is the presence of the above problem in view of the prior art, proposes a kind of power transfer mechanism,
The technical problem to be solved by the utility model is to how to pass through the assembly difficulty for reducing this power transfer mechanism, assembly is improved
Efficiency.
The purpose of this utility model can be realized by the following technical scheme:
A kind of power transfer mechanism, the power transfer mechanism include shear spool, and spacer sleeve is equipped with back on the shear spool
Knife drives crank and trimming drives crank, and described time knife driving crank is fixed on shear spool, and the trimming drives crank and cuts
Spool is slidably matched, which is characterized in that has the boss radially extended towards shear spool, the boss on described time knife driving crank
It is upper that there is power transfering part one, there is power transfering part two, the power transfering part one and power on the trimming driving crank
Transfer part two is connected and the cooperation that slides axially.
Its working principles are as follows: the power transfer mechanism can be applied in the automatic shearing mechanism of existing each sewing machine, such as
Sewing machine involved in 108385293 A patent of CN described in background technology can also.In use, by trimming driving crank with
Its electromagnet is connected, and electromagnet drives trimming to drive crank sliding axially along shear spool, the also phase therewith of power transfering part two
It slides axially to power transfering part one, matches trimming driving crank with the trimming cam in lower axle, trimming cam band
Dynamic trimming drives crank-swinging, and crank passes sequentially through power transfering part two, torsion is transferred to by power transfering part one for trimming driving
It returns on knife driving crank, then drive crank handle turns shear spool to swing by returning knife, the final moving knife for driving shear spool end is swung
Realize trimming.And the main innovation point of the application is, power transfering part two is designed at back to the radial boss of knife driving crank
On, compared with the prior art needs for be inserted into sliding pin the axial groove scheme of fixing sleeve right end, with bigger assembly when installation
Space, and the assembly visual field is good, assembly difficulty is lower, and assembly efficiency can be improved.
In a kind of above-mentioned power transfer mechanism, as a kind of scheme, the power transfering part one includes opening along axial direction
Through-hole one on the boss, the power transfering part two include the connecting pin being set on the trimming driving crank,
The connecting pin passes through the through-hole one and the two is slidably matched.When trimming driving crank slides axially, connecting pin is relatively logical
One synchronous slide of hole；When trimming drives crank-swinging, connecting pin can cooperate with through-hole one drives back knife to drive crank-swinging, in turn
It drives shear spool to swing, realizes the transmitting of power.
In a kind of above-mentioned power transfer mechanism, the trimming driving crank includes spaced left side arm one and the right side
Side arm one is connected between the left side arm one and right arm one by transverse arm one；On the left side arm one and right arm one
Through-hole two is offered, the shear spool passes through through-hole two and is slidably matched；It is also provided with threaded hole on the left side arm one, it is described
Through-hole three is offered in right arm, the threaded hole, through-hole one and through-hole three are coaxially disposed, one end of the connecting pin and screw thread
Hole is threadedly coupled, and the other end sequentially passes through through-hole one and through-hole three.
In a kind of above-mentioned power transfer mechanism, alternatively, the power transfering part one is boss itself,
The power transfering part two includes the sliding slot being opened on the trimming driving crank along axial direction, and the boss and the sliding slot slide
Connection.When trimming driving crank slides axially, sliding slot sliding opposite with boss；When trimming drives crank-swinging, sliding slot can be with
Boss cooperation drives back knife to drive crank-swinging, and then shear spool is driven to swing, and realizes the transmitting of power.
In a kind of above-mentioned power transfer mechanism, the trimming driving crank includes spaced left side arm two and the right side
Side arm two, through-hole four is offered on the left side arm two and right arm two, and the shear spool passes through through-hole four and is slidably matched；
It is connected between the left side arm two and right arm two by transverse arm two, the sliding slot is opened on transverse arm two along axial direction.
In a kind of above-mentioned power transfer mechanism, described time knife driving crank radially extends to be formed and forces go back to knife portion.
Knife portion is forced go back in design, when shear spool can not be resetted because of reasons such as clamping stagnations, can be resetted by forcing back knife portion to drive.
In a kind of above-mentioned power transfer mechanism, rotation is provided with roller on the trimming driving crank.Design has rolling
After column, it can be matched with the trimming cam in lower axle.
A kind of sewing machine, which is characterized in that including above-mentioned power transfer mechanism.
Compared with prior art, the utility model has the advantage that
Power transfering part two is designed at back on the radial boss of knife driving crank by the application, will be slided with prior art needs
The axial groove scheme of dynamic pin insertion fixing sleeve right end is compared, and with bigger assembly space when installation, and it is good to assemble the visual field, assembly
Difficulty is lower, and assembly efficiency can be improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of this power transfer mechanism in embodiment one.
Fig. 2 is the structural schematic diagram of this trimming driving crank in embodiment one.
Fig. 3 is the structural schematic diagram of this time knife driving crank in embodiment one.
Fig. 4 is the structural schematic diagram of this power transfer mechanism in embodiment two.
Fig. 5 is the structural schematic diagram of this trimming driving crank in embodiment two.
Fig. 6 is the structural schematic diagram of this time knife driving crank in embodiment two.
In figure, 1, shear spool；2, knife driving crank is returned；3, trimming drives crank；4, boss；5, power transfering part one；6,
Power transfering part two；7, through-hole one；8, connecting pin；9, left side arm one；10, right arm one；11, transverse arm one；12, through-hole two；
13, through-hole three；14, threaded hole；15, sliding slot；16, left side arm two；17, right arm two；18, through-hole four；19, transverse arm two；20, strong
Make go back to knife portion；21, roller.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
Embodiment one:
As shown in Figure 1, Figure 2, Figure 3 shows, this power transfer mechanism includes shear spool 1, and spacer sleeve is equipped with back knife drive on shear spool 1
Dynamic crank 2 and trimming drive crank 3, return knife driving crank 2 and are fixed on shear spool 1, return knife driving crank 2 and radially extend shape
At forcing go back to knife portion 20；Trimming driving crank 3 is slidably matched with shear spool 1, and rotation is provided with roller on trimming driving crank 3
21, for the trimming cam engagement on lower shaft of sewing machine.
As shown in Figure 1, Figure 2, Figure 3 shows, returning on knife driving crank 2 has the boss 4 radially extended towards shear spool 1, boss 4
Upper to have power transfering part 1, trimming, which drives, has power transfering part 26 on crank 3, and power transfering part 1 and power transmit
Portion 26 is connected and the cooperation that slides axially.It should be noted that boss 4 preferably drives crank with time knife in the present embodiment
Integrally formed integral structure, as other schemes, using it is split type can also, need to only increase corresponding fastener.
In the present embodiment, power transfering part 1 includes the through-hole 1 being opened on boss 4 along axial direction, power transfering part two
6 include the connecting pin 8 being set on trimming driving crank 3, and connecting pin 8 passes through through-hole 1 and the two is slidably matched.Certainly, even
The fit system of outbound 8 and through-hole 1, it is not limited to the section shape of cooperation shown in figure, connecting pin 8 and through-hole 1
Shape can be to be a variety of, and through-hole 1 is preferably through hole in the present embodiment, as other schemes, be designed to blind hole can also, as long as
Hole depth is enough.
Preferably, trimming driving crank 3 includes spaced left side arm 1 and right arm 1, one 9 He of left side arm
It is connected between right arm 1 by transverse arm 1；Through-hole 2 12, trimming are offered in left side arm 1 and right arm 1
Axis 1 passes through through-hole 2 12 and is slidably matched；It is also provided with threaded hole 14 on left side arm one, through-hole 3 13 is offered in right arm,
Threaded hole 14, through-hole 1 and through-hole 3 13 are coaxially disposed, and one end of connecting pin 8 is threadedly coupled with threaded hole 14, and the other end is successively
Across through-hole 1 and through-hole 3 13.Certainly, as other schemes, right side wall 1 can also be only designed, connecting pin 8 can also be set
It counts on boss 4, and through-hole 1 is designed on trimming driving crank 3.And left side arm 1, right arm one in the present embodiment
10 and the integral structure that is integrally formed of transverse arm 1, it as other schemes, is designed to split type, and passes through fastening
Part is connected can also.
Embodiment two:
The present embodiment is roughly the same with embodiment one, the difference is that, power transfering part 1 is boss 4 itself, power
Transfer part 26 includes the sliding slot 15 being opened on trimming driving crank along axial direction, and boss 4 is slidably connected with the sliding slot 15.It is worth
It is noted that certainly, the fit system of boss 4 and sliding slot 15, it is not limited to which cooperation shown in figure, sliding slot 15 runs through in figure
Trimming drives crank 3, the sliding slot 15 not through can also, and the form for being designed to sliding rail can also.
Preferably, trimming driving crank 3 includes spaced left side arm 2 16 and right arm 2 17, left side arm 2 16
With offer through-hole 4 18 in right arm 2 17, shear spool 1 passes through through-hole 4 18 and is slidably matched；Left side arm 2 16 and right side
It is connected between arm 2 17 by transverse arm 2 19, sliding slot 15 is opened on transverse arm 2 19 along axial direction.As other schemes, will slide
Slot 15 is designed on boss 4, and designing the sliding part matched with the sliding slot 15 on trimming driving crank 3 can also.
The utility model additionally provides a kind of sewing machine including above-mentioned power transfer mechanism.
The working principle of the utility model is as follows: in use, by trimming driving crank 3 and sewing machine on electromagnet or its
Its driving source is connected, and electromagnet drives trimming to drive the sliding axially along shear spool 1 of crank 3, and power transfering part 26 is also therewith
Opposite power transfering part 1 slides axially, and matches trimming driving crank 3 with the trimming cam in lower axle, trimming is convex
Wheel drives trimming driving crank 3 to swing, and trimming driving crank passes sequentially through power transfering part 26, power transfering part 1 for torsion
It is transferred to back on knife driving crank 2, then drive crank 2 that shear spool 1 is driven to swing by returning knife, it is final to drive 1 end of shear spool
Moving knife swing realize trimming.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (8)
1. a kind of power transfer mechanism, the power transfer mechanism includes shear spool (1), is spaced and is arranged on the shear spool (1)
There are back knife driving crank (2) and trimming driving crank (3), described time knife driving crank (2) is fixed on shear spool (1), described
Trimming driving crank (3) is slidably matched with shear spool (1), which is characterized in that has on described time knife driving crank (2) towards trimming
The boss (4) that axis (1) radially extends, has power transfering part one (5) on the boss (4), on trimming driving crank (3)
With power transfering part two (6), the power transfering part one (5), which is connected and slides axially with power transfering part two (6), matches
It closes.
2. power transfer mechanism according to claim 1, which is characterized in that the power transfering part one (5) includes along axis
To the through-hole one (7) being opened on the boss (4), the power transfering part two (6) includes being set to the trimming driving song
Connecting pin (8) on handle (3), the connecting pin (8) passes through the through-hole one (7) and the two is slidably matched.
3. power transfer mechanism according to claim 2, which is characterized in that trimming driving crank (3) includes interval
The left side arm one (9) and right arm one (10) of setting pass through transverse arm one between the left side arm one (9) and right arm one (10)
(11) it is connected；Through-hole two (12) is offered on the left side arm one (9) and right arm one (10), the shear spool (1) is worn
It crosses through-hole two (12) and is slidably matched；It is also provided on the left side arm one threaded hole (14), is offered in the right arm one
Through-hole three (13), the threaded hole (14), through-hole one (7) and through-hole three (13) coaxial arrangement, one end of the connecting pin (8) with
Threaded hole (14) is threadedly coupled, and the other end sequentially passes through through-hole one (7) and through-hole three (13).
4. power transfer mechanism according to claim 1, which is characterized in that the power transfering part one (5) is boss (4)
Itself, the power transfering part two (6) includes the sliding slot (15) being opened on trimming driving crank (3) along axial direction, described
Boss (4) is slidably connected with the sliding slot (15).
5. power transfer mechanism according to claim 4, which is characterized in that trimming driving crank (3) includes interval
The left side arm two (16) and right arm two (17) of setting offer through-hole in the left side arm two (16) and right arm two (17)
Four (18), the shear spool (1) pass through through-hole four (18) and are slidably matched；The left side arm two (16) and right arm two (17) it
Between be connected by transverse arm two (19), the sliding slot (15) is opened on transverse arm two (19) along axial direction.
6. power transfer mechanism described according to claim 1 or 2 or 3 or 4 or 5, which is characterized in that described time knife drives crank
(2) it radially extends to be formed and forces go back to knife portion (20).
7. power transfer mechanism described according to claim 1 or 2 or 3 or 4 or 5, which is characterized in that the trimming drives crank
(3) rotation is provided with roller (21) on.
8. a kind of sewing machine, which is characterized in that including the power transfer mechanism as described in claim 1-7 any one.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811466340 | 2018-12-03 | ||
| CN2018114663408 | 2018-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209636467U true CN209636467U (en) | 2019-11-15 |
Family
ID=68474509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822036586.3U Active CN209636467U (en) | 2018-12-03 | 2018-12-05 | A kind of power transfer mechanism and sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209636467U (en) |
-
2018
- 2018-12-05 CN CN201822036586.3U patent/CN209636467U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 317502 No.8 Jinxiu Road, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Patentee after: Meiji Technology Group Co.,Ltd. Address before: 317502 Zhongxiang Industrial Zone, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG MAQI SEWING MACHINE Co.,Ltd. |