CN1814886B - Sewing machine - Google Patents
Sewing machine Download PDFInfo
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- CN1814886B CN1814886B CN 200610007199 CN200610007199A CN1814886B CN 1814886 B CN1814886 B CN 1814886B CN 200610007199 CN200610007199 CN 200610007199 CN 200610007199 A CN200610007199 A CN 200610007199A CN 1814886 B CN1814886 B CN 1814886B
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- feeding
- manual operation
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- force
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Abstract
A sewing machine comprises: a reverse sewing spanner operated manually; and an assisting means for assisting to reduce the manual operating force for the reverse sewing spanner.
Description
Technical field
The present invention relates to have the Sewing machines of manually operated manual operation handle.
Background technology
In the past, the manual operation handle is housed on the Sewing machines, this manual operation handle for example has the spanner of backstitching and presser foot lifter handle etc.The user make operation make when beginning and sewing finishing the time manual operation backstitch spanner, the cloth feeding direction of cloth feeding mechanism is switched to contrary feeding from positive feeding.
Japan speciallys permit to disclose in the front of post portion in No. 2876884 communique (hereinafter referred to as patent documentation 1) and is provided with the Sewing machines that backstitches spanner.The cloth feeding mechanism of this Sewing machines has that to be arranged to the bolster be center rotating feeding amount setting element and feeding adjusting knob.On the double-fork part of feeding amount setting element front end, have up and down a pair of feeding amount adjusting range, have roughly hemispheric snap-latch piece in the rearward end of feeding adjusting knob.This snap-latch piece engages with feeding amount adjusting range.
When snap-latch piece engaged with the feeding amount adjusting range of downside, the feeding tooth carried out positive feeding campaign, and when snap-latch piece engaged with the feeding amount adjusting range of upside, the feeding tooth carried out contrary feeding campaign.Snap-latch piece advances along with the rotating operation of feeding adjusting knob or retreats, thereby the angle of inclination of feeding amount setting element changes, the cloth feed amount of variable feeding tooth.
Using the making in the operation of Sewing machines, the line phenomenon of splitting when preventing sewing finishing is carried out with the needle gage littler than common feeding needle gage, to make cloth feeding direction be the close pin seam of contrary feeding sometimes.In the Sewing machines of patent documentation 1 record, be that rotate at the center with the bolster by making feeding amount setting element, thereby certain 1 face in the adjusting range of feeding amount up and down of the snap-latch piece of feeding adjusting knob and feeding amount setting element engage.Can not be adjusted to different angles of inclination when engaging when snap-latch piece engages with the feeding amount adjusting range of upside and with downside feeding amount adjusting range.Can not be altered to different cloth feed amount when consequently, positive feeding is with contrary feeding.
Therefore, when carrying out close pin seam, backstitch the manual operation power of spanner, make snap-latch piece be in the centre position of the regulation that does not engage with upside feeding amount adjusting range by adjusting.For this reason, must change the angle of inclination, make its angle of inclination little, and dwindle the feeding needle gage, cloth feeding direction is switched to contrary feeding than the feeding amount setting element of setting by the feeding adjusting knob.
Rearward end at feeding amount setting element has the extension spring of using to the positive feeding side application of force.When hand leave backstitch spanner and with cloth feeding direction when contrary feeding switches to positive feeding, for the vibration that suppresses to be produced when feeding amount setting element contacts with snap-latch piece, then extension spring must have big elastic force.
But, in case use the big extension spring of elastic force, then when backstitching spanner, manual operation needs big operating physical force, make the operability variation.
Summary of the invention
The object of the present invention is to provide a kind of Sewing machines that can improve the operability of manual operation handle.
Sewing machines of the present invention has manually operated manual operation handle, it is characterized in that, is provided with auxiliary body, the auxiliary force that this auxiliary body's generation alleviates the operating physical force of described manual operation handle.
Adopt above-mentioned formation, make auxiliary body's action when carrying out the manual operation of manual operation handle, the auxiliary force that generation alleviates the operating physical force of manual operation handle is carried out the operation of manual operation handle to assist.Thus, can alleviate user's necessary operations power when carrying out the manual operation of manual operation handle, improve the operability of manual operation handle.
The testing agency that the manual operation handle detects preferably has been set manual operation, has constituted the form that auxiliary body when detecting manual operation in testing agency produces auxiliary force.Adopt this formation, because of auxiliary body automatically moves,, easy to use so the not setting that need carry out in order to make auxiliary body's action can not cause trouble to the user.
When acting on the flexible application of force on the manual operation handle, auxiliary body preferably includes: the electric property actuator that produces the auxiliary force that overcomes elastic force-applying; And the control part of this electric property actuator of drive controlling.
Adopt this formation,, overcome the auxiliary force that acts on the elastic force-applying on the manual operation handle, to improve the operability of manual operation handle thereby produce by the drive controlling of control part to electric property actuator.Because the product price that this electric property actuator uses is cheap, therefore can reduce cost of manufacture.
Also can have the contrary feeding switch of cloth feeding direction being set for contrary feeding, when will contrary feeding switch setting for, drive electric property actuator cloth feeding direction is switched to against feeding against feeding.
Adopt this formation, constitute auxiliary body, therefore, do not need to reset the electric property actuator that formation auxiliary body uses, can further reduce cost of manufacture because use switches to the electric property actuator of using against feeding with cloth feeding direction.
Also can be provided with: to manual operation the testing agency detected of manual operation handle; And select the pattern set mechanism that the normal mode that auxiliary mode that auxiliary body can move and auxiliary body do not move is set on a ground, auxiliary body constitutes under auxiliary mode the form of generation auxiliary force when testing agency detects manual operation.
Adopt this formation, setting the occasion of auxiliary mode for, when testing agency detected the manual operation of manual operation handle, auxiliary body produced auxiliary force, with the manual operation of auxiliary manual lever.Whether like this, the user sets auxiliary mode and normal mode by selecting a ground, thereby can select to need to assist with the hobby of oneself, improves convenience.
Description of drawings
Fig. 1 is the front view of the sewing machine for covering chain stitch that is provided with manual operation handle operating physical force alleviator of expression one embodiment of the invention.
Fig. 2 is the stereogram that the cloth feeding mechanism of sewing machine for covering chain stitch represented in summary.
Fig. 3 is the feeding amount setting element of expression in the cloth feeding mechanism, backstitch the vertical profile side view of the major part of spanner and auxiliary switch.
Fig. 4 is the block diagram of control system that expression is provided with the sewing machine for covering chain stitch of manual operation handle operating physical force alleviator.
The figure of the relation of Fig. 5 power that to be the expression driving voltage produce with contrary feeding solenoid.
Fig. 6 is the figure of the relation of expression elastic force of extension spring and auxiliary force.
Fig. 7 is that manual operation handle operating physical force alleviates the flow chart of control.
Fig. 8 is expression figure variation, suitable with Fig. 4.
The specific embodiment
Illustrated the present invention in order to illustrate in further detail with reference to accompanying drawing.
Present embodiment is the example that the present invention is applicable to industrial sewing machine for covering chain stitch.
As shown in Figure 1, sewing machine for covering chain stitch M has: Sewing machines support portion 1, the post portion 2 of extending upward from the right part of this support portion 1, from this post portion 2 and support portion 1 opposite to each other to horn portion 3 that left extends.In support portion 1, be provided with the cloth feeding mechanism 10 (with reference to Fig. 2) that fore-and-aft direction (cloth feeding direction) drives feeding tooth 11 (with reference to Fig. 2) and above-below direction driving feeding tooth.
Horn portion 3 has needle bar drive device (not shown) and thread take-up tension lever driving mechanism (not shown).The shank 4 that needle bar drive device can be installed suture needle 5 to the lower end drives up and down.The thread take-up tension lever driving mechanism carries out driving up and down with moving up and down of shank 4 is corresponding to thread take-up tension lever.Electrical motor of sewing machine 72 (with reference to Fig. 4) drives cloth feeding mechanism 10, needle bar drive device and the thread take-up tension lever driving mechanism of these feeding teeth 11.
On the chain-drive section of horn portion 3, have and set cloth feeding direction for contrary feeding switch 6 that contrary feeding is used.Have in the front of post portion 2 and to backstitch spanner 40 (manual operation handle) what cloth feeding direction switched to that contrary feeding uses.Connecting the auxiliary switch 43 (testing agency) that the manual operation that backstitches spanner 40 is detected at this upside that backstitches spanner 40.
On fore-and-aft direction and above-below direction, drive the cloth feeding mechanism 10 of feeding tooth 11 below with reference to Fig. 2 and Fig. 3 explanation.Among Fig. 2, the arrow A direction is described as the place ahead.Affixed eccentric cam 13 shown in Figure 2 on the machine spindle 12 that is positioned at horn portion 3.The upper end of the toggle-action lever 14 of Yan Shening is rotatably chimeric with the periphery of eccentric cam 13 along the vertical direction.
In support portion 1, has the straight feeding axle 15 that can be rotated to support on the machine frame F.Affixed wobble crank 16 on straight feeding axle 15.With the affixed fulcrum 17 of this wobble crank 16 and with the affixed fulcrum 41 in the bottom of toggle-action lever 14 between be connected a pair of the 1st connecting rod 18 respectively.These fulcrum 41 difference rotatably supports the leading section of a pair of the 2nd connecting rod 19.The rearward end of the 2nd connecting rod 19 is connected with switch 20 by fulcrum 42.End at machine spindle 12 has manual operation belt pulley 21.
Be positioned at the feeding amount setting element 22 of main shaft 12 downsides, be supported in rotationally on the machine frame F by the bolster 23 parallel with main shaft 12.The fore-end of feeding amount setting element 22 is seen the double-fork part that forms the very big V word shape of opening from the side, and each self-forming of this double-fork part is a pair of feeding amount adjusting range 24 up and down.Between the rearward end and machine frame F of this feeding amount setting element 22, the extension spring 25 of above-below direction with the state configuration of upholding, effect all the time has the elastic force-applying of dextrorotation veer among Fig. 3 on feeding amount setting element 22.The rearward end of feeding amount setting element 22 is connected with the upper end of the connecting rod 26 that above-below direction extends, and the bottom of this connecting rod 26 is fixedly connected on the left part of switch 20.
The feeding adjusting knob 29 that the free adjustment cloth feed amount is used is installed on the machine frame F of horn portion 3 by the 29a of its double-screw bolt portion.The roughly hemispheric snap-latch piece 29b that is positioned at feeding adjusting knob 29 rearward end engages with the feeding amount adjusting range 24 of feeding amount setting element 22 downsides.
Snap-latch piece 29b advances along with the rotating operation of feeding adjusting knob 29 or retreats, and thus, the angle of inclination of feeding amount setting element 22, is that cloth feed amount in the feeding action of advancing of feeding tooth 11 changes.Feeding tooth 11 is fixed on the feeding table 32, and this feeding table 32 is supported near the portion of left end of straight feeding axle 15 rotationally.
As shown in Figure 2, upper/lower feed shaft 33 be arranged in parallel with straight feeding axle 15, and this upper/lower feed shaft 33 carries out oscillating motion along with the rotation of main shaft 12 by eccentric cam (not shown) and connecting rod (not shown).Affixed two fork cranks 34 in the left part of upper/lower feed shaft 33.Two fork cranks 34 engage with the leading section of feeding table 32, and feeding tooth 11 carries out the reciprocating motion of above-below direction along with the swing of upper/lower feed shaft 33.
Because toggle-action lever 14 carries out the reciprocating motion of above-below direction along with the rotation of main shaft 12 by eccentric cam 13, therefore, the 1st connecting rod 18 is that center of rotation is carried out oscillating motion with fulcrum 17, and the 2nd connecting rod 19 and switch 20 are that center of rotation is carried out oscillating motion with fulcrum 42 simultaneously.At this moment, when fulcrum 42 is not positioned on the connecting line of fulcrum 17 and fulcrum 41, because of the center position of two connecting rods 18,19 not point-blank, so wobble crank 16 generation oscillating motions, feeding tooth 11 moves up in front and back by straight feeding axle 15 and feeding table 32.Feeding tooth 11 also carries out the reciprocating motion of above-below direction along with the swing of upper/lower feed shaft 33 when front and back move up.Consequently, processing cloth can carry out work feed on the feed direction that advances.
At the downside of main shaft 12, the feeding regulating shaft 35 parallel with main shaft 12 is supported on the machine frame F rotationally.The leading section of connection handle 36 is fixed on the end of feeding regulating shaft 35.On connecting rod 26, rearward be provided with the engaging protrusion portion 37 roughly triangular in shape of seeing from the side highlightedly.The bottom of engaging protrusion portion 37 engages with fulcrum post 38 on being supported in connection handle 36.The right part that backstitches the base end part of spanner 40 and feeding regulating shaft 35 is affixed.
Right-hand at connecting rod 26 is installed with contrary feeding solenoid 50 (electric property actuator) on the machine frame F.Affixed connecting crank 52 on feeding regulating shaft 35, the leading section of the plunger 51 of contrary feeding solenoid 50 is connected with connecting crank 52 rotationally.
The following describes and backstitch spanner 40.As shown in Figure 2, backstitching spanner 40 has to overlook and sees roughly rectangular operating body 40a and supporting crank 40b.When not when backstitching spanner 40 and carry out manual operation, shown in solid line among Fig. 3, the rearward end of feeding amount setting element 22 is below being positioned under the effect of extension spring 25 elastic force.Thus, snap-latch piece 29b engages with the feeding amount adjusting range 24 of downside, and feeding regulating shaft 35 is in the turned position of the feeding of advancing of regulation.Cloth feeding direction becomes positive feeding.
If will backstitch spanner 40 presses downwards, then the fulcrum post 38 of connection handle 36 boosts the engaging protrusion portion 37 of connecting rod 26 upward, and connecting rod 26 is moved upward.The elastic force-applying that elastic force produced of extension spring 25 is arranged backstitching on the spanner 40 effect.When using the manual operation power suitable to carry out manual operation to backstitching spanner 40 with this elastic force, shown in the double dot dash line among Fig. 3, the rearward end of feeding amount setting element 22 is positioned at the top, snap-latch piece 29b engages with the feeding amount adjusting range 24 of upside, and feeding regulating shaft 35 turns to the turned position of contrary feeding.
Consequently, the inclination angle of the 2nd connecting rod 19 and switch 20 changes.Because of switch 20 tilts to the angle that makes cloth feed amount counter-rotating, thus fulcrum 42 to connecting the last side shifting of fulcrum 17 with the straight line of fulcrum 41, wobble crank 16 produces the oscillating motion of using against feeding, feeding tooth 11 carries out against the feeding campaign.
The following describes auxiliary switch 43.As shown in Figure 3, auxiliary switch 43 has operation panel 44 and the limit switch 45 that is made of leaf spring.Operation panel 44 has the upper plate portion 46 and the rearward end of leading section bending and is arranged to downward pair of side plates portion 47.Limit switch 45 is loaded among the operating body 40a, and the operating member 48 of limit switch 45 is outstanding above operating body 40a.Use Screw 49 will be positioned at the connecting hole (not shown) on the side plate 47 of operation panel 44 and the screw (not shown) that is positioned on the side surface part that supports crank 40b is fixed, backstitch on the spanner 40 thereby auxiliary switch 43 is installed in.
When not when backstitching spanner 40 and carry out manual operation, effect has the application of force upward on operation panel 44.Therefore, the following operating member 48 from limit switch 45 of the upper plate portion 46 of operation panel 44 separates, and auxiliary switch 43 is in closed condition.When backstitching spanner 40 and carried out manual operation, the operating member 48 of the following and limit switch 45 of the upper plate portion 46 of operation panel 44 contacts.Thereby auxiliary switch 43 is connected, and detects the manual operation that backstitches spanner 40.
The following describes the control system of the sewing machine for covering chain stitch M that is provided with manual operation handle operating physical force alleviator 60.As shown in Figure 4, manual operation handle operating physical force alleviator 60 has auxiliary switch 43, contrary feeding solenoid 50 and control device 61.Control device 61 have input interface 62, CPU63, ROM64, RAM65, can the rewriting of electric property non-volatile burst flash memory 66, output interface 67, with the bus 68 and the drive circuit 69,70 of interconnective data/address bus of these elements etc.
On input interface 62, connecting the position of rotation detecting sensor 73 that starts shutdown switch 71, the position of rotation (position of rotation of machine spindle) that detects electrical motor of sewing machine 72 and rotary speed, contrary feeding switch 6, auxiliary switch 43.On output interface 67, connecting the drive circuit 69 of electrical motor of sewing machine 72 usefulness and the drive circuit 70 of contrary feeding solenoid 50 usefulness of driving.
In drive circuit 70, have and switch the driving voltage commutation circuit (not shown) that is used to drive against the driving voltage of feeding solenoid 50, select a ground and supply with high voltage and two kinds of driving voltages of low-voltage.When auxiliary switch 43 cut out, driving voltage became high voltage, and when auxiliary switch 43 was connected, driving voltage became low-voltage.In the present embodiment, high-tension driving voltage is set at 27V, the driving voltage of low-voltage is set at 15V.
In ROM64, store in advance: the motor that drives various driving mechanisms is carried out the drive controlling program that drive controlling is used; When using auxiliary switch 43 to detect the manual operation that backstitches spanner 40, contrary feeding solenoid 50 is carried out the control program that drive controlling is used; Video data is weaved into the control program of control usefulness.
In RAM65, be provided with as required: storage is to the stitch data memory of the stitch data of making supply; Accommodate the various memories of using by the operation result after the CPU63 calculation process; Indicator; Counter.In the present embodiment, control device 61 is suitable with control part, constitutes auxiliary body 74 by this control device 61 and contrary feeding solenoid 50.
The following describes the driving of contrary feeding solenoid 50.Contrary feeding solenoid 50 when contrary feeding switch 6 receives the instruction that makes the cloth feeding direction counter-rotating and auxiliary switch 43 drive when connecting.When contrary feeding solenoid 50 drove, plunger 51 utilized the elastic force of extension spring 25 to enter in the contrary feeding solenoid 50.
Receiving instruction from contrary feeding switch 6, when cloth feeding direction being switched to contrary feeding, be 27V against the driving voltage of feeding solenoid 50 by contrary feeding solenoid 50.Like this, as Fig. 5, shown in Figure 6, when driving voltage becomes 27V, utilize the power (power during counter-rotating) that is produced by contrary feeding solenoid 50, plunger 51 is only forwards outstanding soon with movable stroke.
Feeding regulating shaft 35 turns to the turned position of contrary feeding by connecting crank 52, and by connection handle 36 swing upward, connecting rod 26 is moved upward simultaneously.At this moment, the power during counter-rotating is greater than the elastic force of extension spring 25.Connecting rod 26 is moved upward, until snap-latch piece 29b with till the feeding amount adjusting range 24 of feeding amount setting element 22 upsides engages.
On the other hand, when auxiliary switch 43 was connected and detected manual operation and backstitch spanner 40, the driving voltage of contrary feeding solenoid 50 was 15V.As Fig. 5, shown in Figure 6, plunger 51 utilizes the power (auxiliary force) that is produced by contrary feeding solenoid 50 and promptly will forwards expose slightly.
Feeding regulating shaft 35 rotates by connecting crank 52, and by connection handle 36 swing upward, connecting rod 26 is moved upward slightly simultaneously.Because auxiliary force approximately is half of elastic force of extension spring 25, so be not that cloth feeding direction switches to the state against feeding.
Below with reference to the flow chart of Fig. 7, the control of the manual operation handle operating physical force alleviator 60 that can alleviate the manual operation power that backstitches spanner 40 is described.When using auxiliary switch 43 to detect the manual operation that backstitches spanner 40, utilize the driving force of contrary feeding solenoid 50 to produce auxiliary force.Si among the figure (i=1,2,3 ...) represent each step.
This control program starts when auxiliary switch 43 is connected.At first, the close pin seam when carrying out sewing finishing, if manual operation backstitches spanner 40, then auxiliary switch 43 is connected (S1: be).In case detect the manual operation that backstitches spanner 40, the driving voltage of contrary feeding solenoid 50 just switches to 15V (S2).
Because of the driving voltage against feeding solenoid 50 is 15V (S3),, generation acts on the auxiliary force that backstitches the elastic force on the spanner 40 so overcoming extension spring 25.As shown in Figure 6, utilize auxiliary force to assist and overcome the only about half of of extension spring 25 elastic force.Therefore, when carrying out close pin seam, use the manual operation power suitable just can carry out manual operation to backstitching spanner 40 with the power that from the elastic force of extension spring 25, deducts auxiliary force.On the other hand, (S1 :) in time, do not returned when auxiliary switch 43 cuts out.
Reusing 43 pairs of auxiliary switches has or not the manual operation that backstitches spanner 40 to judge (S4).(S4: not), be judged as the manual operation that continues to backstitch spanner 40, then drive contrary feeding solenoid 50 (S3) when auxiliary switch 43 is connected.When close pin seam finishes, backstitch spanner 40 in case hand left, then auxiliary switch 43 cuts out (S4: be).This occasion is judged as and does not carry out manual operation to backstitching spanner 40, stops the driving (S5) of contrary feeding solenoid 50, returns after will switching to 27V (S6) against the driving voltage of feeding solenoid 50.In step S6, do not apply driving voltage to contrary feeding solenoid 50.
The following describes effect, the effect of the manual operation handle operating physical force alleviator 60 of above-mentioned Sewing machines.Making in the operation of use Sewing machines, backstitch the manual operation of spanner 40 for cloth feeding direction being switched to contrary feeding.At this moment, in case use auxiliary switch 43 to detect the manual operation that backstitches spanner 40, then 61 pairs of contrary feeding solenoids 50 of control device drive, with the auxiliary manual operation power that backstitches spanner 40.
Can alleviate user's necessary operations power when manual operation backstitches spanner 40, improve operability.Particularly when making the sewing finishing of operation,, can improve the operability of user when manually backstitching spanner 40 fine settings for example in the occasion of carrying out close pin seam.
When using auxiliary switch 43 to detect manual operation, control device 61 automatically makes contrary feeding solenoid 50 actions and produces auxiliary force, so do not need to be used to produce the setting of auxiliary force, can not cause trouble to the user, and is easy to use.
Solenoid is low price in general, if generation auxiliary force and use solenoid, then can reduce cost of manufacture, very favourable.
Using the occasion that cloth feeding direction is switched to the contrary feeding solenoid 50 that contrary feeding uses, do not need to reset solenoid, can further reduce cost of manufacture.
The present invention is not limited to the above embodiments, for example can implement following distortion.
1) the manual operation handle operating physical force alleviator 60A shown in also can image pattern 8 is such, be provided with pattern configuration switch (pattern set mechanism) 75, this pattern configuration switch 75 can be selected a ground and set the normal mode that auxiliary mode that auxiliary body 74 can move and auxiliary body 74 do not move.This occasion, whether in the flow chart of Fig. 7, being provided with carrying out S1 is treatment steps that auxiliary mode detects to pattern configuration switch 75 before handling.When being auxiliary mode, carry out the processing of S1, when being normal mode, return.Like this, the user can select whether needs are auxiliary according to the hobby of oneself, to improve convenience.
2) also can be in stitch data add in advance and set the instruction that auxiliary mode is used, automatically set auxiliary mode when making beginning and during sewing finishing for.
3) be that example is described manual lever to backstitch spanner 40 in an embodiment.The manual operation handle for example also can be that presser foot lifter spanner of lifting presser feet etc. is arranged on other lever on the Sewing machines.
4) in an embodiment, be used to produce that the solenoid of auxiliary force uses is that cloth feeding direction is switched to the contrary feeding solenoid 50 that contrary feeding is used, but the solenoid that is used to produce auxiliary force can be provided with in addition also.
5) for the high voltage in the contrary feeding solenoid 50 and low-voltage driving voltage separately and the auxiliary force that produces by contrary feeding solenoid 50, can change respectively.
6) in an embodiment, be that limit switch 45 by auxiliary switch 43 constitutes as testing agency, but also can replace limit switch 45 and use optical pickocff.It also can be employed infrared ray tactile sensor on the touch operation board.
7) if the insider without departing from the spirit and scope of the present invention, can implement with the form of the foregoing description being added various changes, the present invention comprises various forms.
Claims (6)
1. a Sewing machines has manually operated manual operation handle, it is characterized in that, is provided with auxiliary body, the auxiliary force that this auxiliary body's generation alleviates the operating physical force of described manual operation handle; And, to manual operation the testing agency detected of the situation of described manual operation handle,
Described auxiliary body produces described auxiliary force when detecting manual operation in described testing agency.
2. Sewing machines as claimed in claim 1 is characterized in that, is provided with:
Pattern set mechanism, this pattern set mechanism are selected a ground and are set the normal mode that auxiliary mode that described auxiliary body can move and described auxiliary body do not move,
Described auxiliary body is producing described auxiliary force when described testing agency detects manual operation under the described auxiliary mode.
3. Sewing machines as claimed in claim 1 or 2 is characterized in that, the flexible application of force of effect on described manual operation handle,
Described auxiliary body comprises: electric property actuator, and this electric property actuator produces the auxiliary force that overcomes described elastic force-applying; And control part, this control part carries out drive controlling to described electric property actuator.
4. Sewing machines as claimed in claim 1 or 2 is characterized in that, described manual operation handle is that cloth feeding direction is switched to the spanner that backstitches that contrary feeding uses.
5. Sewing machines as claimed in claim 3 is characterized in that, described manual operation handle is that cloth feeding direction is switched to the spanner that backstitches that contrary feeding uses.
6. Sewing machines as claimed in claim 3 is characterized in that, has the contrary feeding switch of cloth feeding direction being set for contrary feeding,
Described control part drives described electric property actuator when described contrary feeding switch is set for against feeding, so that described cloth feeding direction is contrary feeding.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005029585A JP2006212289A (en) | 2005-02-04 | 2005-02-04 | Device for reducing operating force for manual lever of sewing machine |
| JP2005-029585 | 2005-02-04 | ||
| JP2005029585 | 2005-02-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1814886A CN1814886A (en) | 2006-08-09 |
| CN1814886B true CN1814886B (en) | 2011-11-02 |
Family
ID=36907238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610007199 Expired - Fee Related CN1814886B (en) | 2005-02-04 | 2006-01-28 | Sewing machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006212289A (en) |
| CN (1) | CN1814886B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013179994A (en) * | 2012-02-29 | 2013-09-12 | Brother Ind Ltd | Control unit for sewing machine and sewing machine |
| CN104729588A (en) * | 2015-04-07 | 2015-06-24 | 江苏万工科技集团有限公司 | Take-up-lever on line vibration and bending measurement device |
-
2005
- 2005-02-04 JP JP2005029585A patent/JP2006212289A/en active Pending
-
2006
- 2006-01-28 CN CN 200610007199 patent/CN1814886B/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| JP特开2000-51557A 2000.02.22 |
| JP特开平5-253374A 1993.10.05 |
| JP特开平6-178889A 1994.06.28 |
| JP特开平9-248389A 1997.09.22 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1814886A (en) | 2006-08-09 |
| JP2006212289A (en) | 2006-08-17 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20111102 Termination date: 20140128 |