CN1308158A - Threading device of sewing machine - Google Patents
Threading device of sewing machine Download PDFInfo
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- CN1308158A CN1308158A CN 01103229 CN01103229A CN1308158A CN 1308158 A CN1308158 A CN 1308158A CN 01103229 CN01103229 CN 01103229 CN 01103229 A CN01103229 A CN 01103229A CN 1308158 A CN1308158 A CN 1308158A
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- line
- mentioned
- hook
- threading
- eedle
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Abstract
The threading device 4 of a lock sewing machine 1 provided with a thread guide means 10 and a threading hook 25, an elastic member with a hook 26a catching the thread T when the thread T drawn in the needle holes 2a, 3a comes off the threading hook 25, at a position separated from the threading hook 25 is formed, and further, the elastic member 26 moves to such a position that the end of the thread T caught by the thread-catching hook 26a passes through the needle hole.
Description
The present invention relates to threader to the Sewing machines of the line hole of Sewing needles threading.
As the reach the standard grade threader in the line hole of piercing into eedle of existing handle, for example the device recorded and narrated of No. 5088426 communique of U.S. Patent bulletin (perhaps No. the 2917320th, Japan's patent gazette) is for well-known.In the threader that this communique is recorded and narrated, hook component moves to the state in the line hole that once connects Sewing needles, under this state, linking after the end of reaching the standard grade on the supply source hangs on the hook front end, because hook component carries out homing action and makes it to extract from the line hole, finishes threading.
But, in above-mentioned threader, in the process of its threading, inserted the reaching the standard grade of line hole of pin by the homing action of hook component, the vibration during owing to the action of hook, the frictional resistance when reaching the standard grade logical cable-through hole and the reasons such as deadweight of reaching the standard grade can split away off from hook before logical fully cable-through hole, in this case, need to carry out again once more the threading operation, perhaps with the such instrument of tweezers the line end that will draw entrance hole is pulled out from the line hole, operation becomes numerous and diverse and operating efficiency is reduced.
Problem of the present invention is, in the threader of the Sewing machines in the line hole that penetrates eedle reaching the standard grade, carries out the threading operation that line end is pulled out reliably more simply from the line hole.
In order to solve above-mentioned problem, the 1st technical scheme of the present invention, as Fig. 1, shown in Figure 2, in the threader of Sewing machines, have line guide (10) and threading hook (25), above-mentioned line guide (10) so that the line hole of line of controlling and eedle relatively configuration mode can move from the position that isolates with eedle, the ground, line hole that above-mentioned threading hook (25) could connect or break away from above-mentioned eedle moves back and forth, under breakthrough status, threading hook (25) is caught by the line guide and is made it line near line hole and subtend configuration, when breaking away from, threading hook (25) moves to this line lead-in hole and the position in this line end feed-through hole, it is characterized in that, in above-mentioned threader, have and catch travel mechanism (30), this is caught travel mechanism (30) and can move with above-mentioned threading hook, and this seizure travel mechanism (30) has capture unit (26a, 31), this capture unit (26a, 31) is positioned at the below of threading hook and can catches the line that comes off from the threading hook that moves.
According to the 1st technical scheme of the present invention, when line by the threading hook with ring-type lead-in hole in the time, under the situation that this line breaks away from from the threading hook, catch by the line capture unit of catching travel mechanism, owing to wear cable-through hole by the mobile line end that makes of catching travel mechanism, so can be as existing threader, line end on the way gets loose, and can pull out line end from the line hole reliably.
The 2nd technical scheme of the present invention is characterized in that, in the threader of the described Sewing machines of the 1st technical scheme, catches travel mechanism and is installed on the threading hook actuation mechanism (20), and this threading hook actuation mechanism makes the threading hook move relative to eedle with being toward or away from.
According to the 2nd technical scheme of the present invention, be installed on the threading hook actuation mechanism owing to catch travel mechanism, so can move with the threading hook, the line of catching at the threading hook can be caught when the threading hook breaks away from reliably.
The 3rd technical scheme of the present invention is characterized in that, in the threader of technical scheme 1 or 2 described Sewing machiness, catches travel mechanism and has elasticity, so that above-mentioned line capture unit retreats when contacting with above-mentioned eedle.
When online capture unit was arranged near threading hook, with the threading hook during the operation in line lead-in hole, the line capture unit might contact other members such as eedle.But, seizure travel mechanism according to the 3rd technical scheme of the present invention, owing to when the line capture unit contacts with other members, have and to retreat such elasticity, again because retreat when line capture unit when eedle etc. contacts with keeping out of the way, so the operation to lead-in does not have bad influence, can not lose line capture unit and eedle yet.
The 4th technical scheme of the present invention is characterized in that, in the threader of technical scheme 1 or 2 or 3 described Sewing machiness, above-mentioned line capture unit has elasticity, and this line capture unit combines with eedle when the near eedle of above-mentioned threading clasp joint, in conjunction with the time because of the eedle deflection.
According to the 4th technical scheme of the present invention, because the line capture unit combines also deflection during the nearly eedle of threading clasp joint with eedle, so can dispose threading hook and line capture unit under more approaching state, even line comes off from the threading hook, the line capture unit also can capture line reliably.
The 5th technical scheme of the present invention is characterized in that, in the threader of technical scheme 1 to 4 described Sewing machines, when above-mentioned line capture unit breaks away from from above-mentioned line hole at above-mentioned threading hook, between above-mentioned eedle and above-mentioned threading hook.
Therefore, when the line hole of eedle broke away from, even line comes off from the threading hook, the line capture unit is capture line reliably also at the threading hook.
Fig. 1 is the stereogram of an example of the threader of expression Sewing machines of the present invention.
Fig. 2 is the stereogram that expression is arranged on the threading hook actuation mechanism on the threader of Fig. 1.
Fig. 3 is the enlarged drawing of the threading hook portion of Fig. 2.
Fig. 4 is the threading side view of seeing from a side of a hook cover partly, is the figure that is used to illustrate the threading operation.
Fig. 5 is the figure that other examples of travel mechanism represented to catch in summary.
Below, explain embodiments of the invention with reference to the accompanying drawings.
Threader of the present invention 4 shown in Fig. 1 and Fig. 2 is arranged on being used for reaching the standard grade the line hole 2a that pierces into 2 Sewing needless 2,3, the device of 3a on the horn 1a of overlock machine 1.
Threader 4 is mainly by action bars 11, cropper 12, and line guide 10, needle bar line guide member 14 and threading hook actuation mechanism 20 shown in Figure 2 constitute.In the horn 1a at the rear of threading hook actuation mechanism 20 common online guides 10, image pattern 1 be cannot see from the outside like that.
Action bars 11 is to make the bar operated of line T when reaching the standard grade.
Cropper 12 has been installed cutting blade 12a, is the cropper that cuts off idle loop when chain-type stitchs such as over-lock stitch are made.In addition, cropper 12 cuts off the line reach the standard grade and cuts off member when also being threading, is arranged on the position of regulation of bottom, side of horn 1a shown in Figure 1.This position is to consider that when threading described later action the line end by the line T of line arresting hook 26a pull-up has feed-through hole 2a reliably, the length of 3a and definite.
Have, existing idle loop cropper is arranged on from operator's position and belongs on the A position of Fig. 1 at rear again, and in the present invention, and is convenient when considering threading, in front of being arranged on the B position of side.
Needle bar line guide member 14 is made of spiral helicine steel wire, and this spiral helicine guiding principle silk is fixed on the top of pin fixed part 16 with screw.
Line guide 10 is made of pre-tensioned portion 13 and slide 15.
Pre-tensioned portion 13 when threading wire clamp between fitting machine plate 13a and pre-tensioning ware 13b.Outward extending appearance is made in the right side of fitting machine plate 13a, and fixedly end portion is divided into two strands slide 15 on its end.Two bursts of parts of slide 15 become the guiding groove 15a of guide line.
Threading hook actuation mechanism 20 shown in Figure 2 is made of threading axle 21, seat 21a hook start plate 22, hook cover 23,24 etc., above-mentioned threading axle 21 can move up and down with respect to the arm 1a of Sewing machines and can be around the axle center steering, simultaneously at the extending direction of arm, be to be supported in swingably on the arm 1a of Sewing machines in the orientation of 2 pins 2,3 described later, above-mentioned seat 21a is fixedly mounted on the above-mentioned threading axle 21, above-mentioned hook start plate 22 extends to the side from axle bed 21a, and above-mentioned hook cover 23,24 is arranged on the front end of hook start plate 22.As shown in Figure 3, between hook cover 23,24, be provided with the threading hook 25 that front end forms downward hook, be arranged to outwards outstanding.This threading hook 25, its size can through track hole 2a, 3a.Threading hook actuation mechanism 20 carry out start make this threading hook 25 near and leave eedle 2,3.
In addition, in the rear side of hook start plate 22 the resilient elastic component 26 of making whole deflection that is made of elongate members is installed.Elastic component 26 is fixed on the hook start plate 22 by screw 27, packing ring 28 and nut 29.In addition, the front end of elastic component 26 is between hook cover 23,24 and form needle-like towards the top, becomes line arresting hook (line capture unit) 26a of the line that seizure comes off from threading hook 25, and promptly elastic component 26 becomes seizure of the present invention travel mechanism.
In addition, shown in Fig. 4 (a), line arresting hook 26a is under threading hook 25, on the position of the front end that its front end is arranged to be positioned at threading hook 25 before slightly.
Line guide 10 and hook actuation mechanism 20 are not shown, but which all has the well-known actuation mechanism that following compulsory exercise is carried out in the action that is used for attended operation bar 11.That is, pushed interlock downwards with action bars 11, the oblique to the right below of pre-tensioned portion 13 and slide 15 moves to slide 15 the place ahead by eedle 2,3.Almost threading axle 21 limits descend simultaneously, and the front end edge of hook start plate 22 forwards moves, and threading hook 25 is by the line hole of eedle 2 or eedle 3.As above-mentioned known mechanism, the mechanism of recording and narrating in No. the 5088426th, for example above-mentioned U.S. Patent bulletin is by as everyone knows.
When breaking away from action bars 11, action bars 11 limit rising edges return the origin-location, and simultaneously, pre-tensioned portion 13 and slide 15 oblique upper left move, and threading axle 21 limits are turned round on the limit to opposite direction and risen, and get back to reset condition.
Normally closed between the installation base plate 13a of pre-tensioned portion 13 and the pre-tensioning ware 13b, but when rising, threading hook 25 captures line reliably after, open.
In addition, the changer lever that the known figure of records such as No. the 5195452nd, U.S. Patent bulletin for example or No. 5072678 does not show is set in threader 4, by operating this changer lever, the side-to-side vibrations of threading axle, the ground swing of line hole 2a, the 3a of threading hook 25 relative eedles 2,3 can select the line hole of any one pin to carry out threading.
Below, the action during to threading operation in the threader 4 of above-mentioned formation describes.
On threader 4, for example pierce into the situation in the eedle 2 reaching the standard grade, at first, the line T that the coil of wire that figure from horn 1a top is not shown is derived pierces in the needle bar guide member 14, then hang in the gathering sill 15a of slide 15, the outside of workaround bar 11 when hanging over line on the cropper 12, is cut off at this position line between installation base plate 13a by pre-tensioned portion 13 and the pre-tensioning ware 13b.At this moment threading hook 25 and line arresting hook 26a are in the state of Fig. 4 (a).
Under this state, when action bars 11 (Fig. 1 arrow C direction) when drawing downwards, as previously mentioned, pre-tensioned portion 13 moves to the right tiltedly below of Fig. 1.Line T also moves under the inducing of slide 15 together.When slide 15 stopped in the place of the front by eedle 2,3, line T was because of the closed front of being clamped the tension force with regulation by enough strength and reaching the line hole of eedle 2 between the installation base plate 13a of pre-tensioned portion 13 and the pre-tensioning ware 13b.
With the action of above-mentioned pre-tensioned portion 13 and slide 15 almost simultaneously, the 21 limit trailing edge revolutions of threading axle, threading hook 25 is near the line hole 2a of eedle 2, when online T reaches state before the 2a of line hole outward, because the further revolution of threading axle 21, threading hook 25 feed-through hole 2a draw hanging wire T to draw circlewise in the line-entering hole 2a with its hook front end.
At this moment, the front end of line arresting hook 26a contacts with the bottom of eedle 2, and still, because it has pliability, shown in Fig. 4 (b), deflection does not influence eedle 2 to the rear of eedle 2.
Under this state, when leaving the handle of action bars 11, action bars 11 rising repositions.Threading axle 21 limits are turned round on the limit in the other direction and are risen, and are accompanied by this action, and shown in Fig. 4 (c), threading hook 25 is line T pull-up.At this moment, line arresting hook 26a also turns back to original shape owing to leaving eedle 2, in addition, almost simultaneously between installation base plate 13a and the pre-tensioning ware 13b by open, pre-tensioned portion 13 and slide 15 leave line T left oblique upper move and turn back to original position.
In the process that threading hook 25 rises, line T is because deadweight splits away off from threading hook 25, but the line arresting hook 26a that hangs over the oblique below that is positioned at threading hook 25 goes up and is captured.Next, when threading axle 21 turns back to original position of readiness on while turning round with rising, when line arresting hook 26a also turns back to original position, wear cable-through hole 2a (Fig. 4 (a)) with the line end of the cut line T of length that stipulates.
Have again, because line arresting hook 26a just catches on line T rather than fixing, so can begin to make operation in the situation of not throwing off from line arresting hook 26a.
According to above threader 10, line T when pull out in the line hole, is caught by line arresting hook 26a from the line that threading hook 25 comes off.Pull out from the line hole owing to be accompanied by the line end that line arresting hook 26a turns back to the home position,, can from the line hole, pull out reliably so line end can on the way not escaped.Therefore, the threading operation can be carried out simple and reliablely.
In addition, has the elastic component 26 of line arresting hook 26a owing to be installed on the hook start plate 22 that constitutes threading hook actuation mechanism 20, and line arresting hook 26a is below threading hook 25, and be positioned on the position in the place ahead, so can catch the line T that comes off from threading hook 25 reliably with threading hook 25 mobile limits in the limit.
Have again, line arresting hook 26a be in threading hook 25 under, on near before its front end is positioned at the front end of threading hook 25 slightly the position, when threading hook 25 drawn wires, contact with eedle 2, but,, deflection limit, line arresting hook 26a limit do not influence eedle 2 so retreating because it is the part of elastic component 26.
In addition, owing to can on the position of determining, cut off the line T that draws from the coil of wire 31 by the cropper 12 that is arranged on below the horn 1a sidepiece, so be bound to line is pulled out from the line hole if line arresting hook 26a returns position of readiness.
Have again, owing to the cropper 12 also existing idle loop cropper of double as, so do not increase the quantity of part.
The invention is not restricted to the foregoing description, also can carry out suitable variation.
For example, catching travel mechanism constitutes as shown in Figure 5.Fig. 5 represents to catch travel mechanism 30, catches mechanism 30 and is made of hook 31, spring 34, anti-nail pulling 32 and support member 33.
The hook 31 that belongs to the line capture unit becomes コ word shape.Support member 33 is members of a tenaculum 31, for example, is fixed by being installed on the above-mentioned start plate 22, has the embedded hole 33a of the head 31a that puts into hook 31.
The mobile capture mechanism 30 of Fig. 5 is being used under the situation of the foregoing description, the same with above-mentioned line arresting hook 26a, hook 31 be in the below of threading hook 25 and slightly before the position on.If hook 31 its front ends touch on the eedle, will resist the elastic force of spring 34, head 31a retreats along embedded hole 33a, if leave eedle, can turn back to the place ahead by the tax force of spring 34, can catch the line that comes off from the threading hook.
Have, in the above-described embodiments, the action that is accompanied by action bars drives the threading hook by the threading axle that rotates, and also can be other mechanisms, for example also can make the structure that contains acting device again.
In addition, in the present embodiment, be illustrated with the overseam Sewing machines, threader of the present invention also can be used for other sewing machine for covering chain stitch, embroidery sewing machine etc.
According to the 1st technical scheme of the present invention, when line by the threading hook with ring-type lead-in hole in the time, under the situation that this line breaks away from from the threading hook, catch by the line capture unit of catching travel mechanism, owing to wear cable-through hole by the mobile line end that makes of catching travel mechanism, so can be as existing threader, line end on the way unclamps, and can pull out line end from the line hole reliably.
According to the 2nd technical scheme of the present invention, be installed on the threading hook actuation mechanism owing to catch travel mechanism, so can move with the threading hook, the line of catching at the threading hook can capture when the threading hook breaks away from reliably.
Seizure travel mechanism according to the 3rd technical scheme of the present invention, owing to when the line capture unit contacts with other members, have and to retreat such elasticity, again because retreat when line capture unit when eedle etc. contacts with dodging, so the operation to lead-in does not have bad influence, can not lose line capture unit and eedle yet.
According to the 4th technical scheme of the present invention, because the line capture unit combines also deflection during the nearly eedle of threading clasp joint with eedle, so can dispose threading hook and line capture unit under more approaching state, even line comes off from the threading hook, the line capture unit also can capture line reliably.
According to the 5th technical scheme of the present invention, at the threading hook when the line hole of eedle breaks away from, even line is from the threading hook also capture line reliably of line capture unit that comes off.
Claims (5)
1. the threader of a Sewing machines, have line guide and threading hook, above-mentioned line guide is for so that relatively dispose can be mobile from the position that isolates with eedle in the line hole of line of being controlled and Sewing needles, above-mentioned threading hook can above-mentioned relatively eedle the break-through of line hole or move back and forth with breaking away from, in pass-through state, by the line of line guide near line hole and the relative configuration of seizure, when breaking away from, the threading hook moves to this line lead-in hole and the position of this line end being worn cable-through hole, it is characterized in that, above-mentioned threader has catches travel mechanism, and this seizures travel mechanism can move and has the below that is positioned at the threading hook and can catch the capture unit of the line that comes off from mobile threading hook with above-mentioned threading hook.
2. the threader of Sewing machines as claimed in claim 1 is characterized in that, catches travel mechanism and is installed on the threading hook actuation mechanism, and this threading actuation mechanism makes the threading hook move relative to eedle with being toward or away from.
3. the threader of Sewing machines as claimed in claim 1 or 2 is characterized in that, catches travel mechanism and has elasticity, so that above-mentioned line capture unit retreats when contacting with above-mentioned eedle.
4. as the threader of claim 1 or 2 or 3 described Sewing machiness, it is characterized in that above-mentioned line capture unit has elasticity, this capture unit combines with eedle when the near eedle of above-mentioned threading clasp joint, in conjunction with the time because of the eedle deflection.
5. as the threader of the described Sewing machines of claim 1 to 4, it is characterized in that, when above-mentioned line capture unit breaks away from from above-mentioned line hole at above-mentioned threading hook, between above-mentioned eedle and above-mentioned threading hook.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000031896A JP2001218992A (en) | 2000-02-09 | 2000-02-09 | Threading device for sewing machine |
| JP31896/2000 | 2000-02-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1308158A true CN1308158A (en) | 2001-08-15 |
| CN1170973C CN1170973C (en) | 2004-10-13 |
Family
ID=18556580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011032294A Expired - Fee Related CN1170973C (en) | 2000-02-09 | 2001-02-07 | Threading device of sewing machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2001218992A (en) |
| CN (1) | CN1170973C (en) |
| TW (1) | TW509735B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1523156B (en) * | 2003-01-22 | 2010-05-26 | 兄弟工业株式会社 | Sewing machine |
| WO2011038532A1 (en) * | 2009-09-29 | 2011-04-07 | 吴渭水 | Fast threading machine needle apparatus |
| CN101307537B (en) * | 2007-05-15 | 2012-05-30 | Juki株式会社 | Threading device of sewing machine |
| TWI394878B (en) * | 2007-01-25 | 2013-05-01 | Jaguar Int Corp | Sewing machine threading device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4789360B2 (en) * | 2001-07-12 | 2011-10-12 | 蛇の目ミシン工業株式会社 | Sewing machine with needle threading device |
| JP3818509B2 (en) | 2003-01-22 | 2006-09-06 | ブラザー工業株式会社 | Sewing machine, threading control program, and recording medium for threading control |
| JP5050493B2 (en) * | 2006-11-10 | 2012-10-17 | アイシン精機株式会社 | Sewing machine threading device |
| JP2008212443A (en) * | 2007-03-06 | 2008-09-18 | Brother Ind Ltd | Sewing machine |
-
2000
- 2000-02-09 JP JP2000031896A patent/JP2001218992A/en active Pending
-
2001
- 2001-02-01 TW TW90102090A patent/TW509735B/en not_active IP Right Cessation
- 2001-02-07 CN CNB011032294A patent/CN1170973C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1523156B (en) * | 2003-01-22 | 2010-05-26 | 兄弟工业株式会社 | Sewing machine |
| TWI394878B (en) * | 2007-01-25 | 2013-05-01 | Jaguar Int Corp | Sewing machine threading device |
| CN101307537B (en) * | 2007-05-15 | 2012-05-30 | Juki株式会社 | Threading device of sewing machine |
| WO2011038532A1 (en) * | 2009-09-29 | 2011-04-07 | 吴渭水 | Fast threading machine needle apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| TW509735B (en) | 2002-11-11 |
| JP2001218992A (en) | 2001-08-14 |
| CN1170973C (en) | 2004-10-13 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20041013 |