CN102337646A - Control mechanism for two-way overrun clutch on sewing machine - Google Patents
Control mechanism for two-way overrun clutch on sewing machine Download PDFInfo
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- CN102337646A CN102337646A CN2011102209056A CN201110220905A CN102337646A CN 102337646 A CN102337646 A CN 102337646A CN 2011102209056 A CN2011102209056 A CN 2011102209056A CN 201110220905 A CN201110220905 A CN 201110220905A CN 102337646 A CN102337646 A CN 102337646A
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- wedge
- clutch
- movable block
- roller
- feed spool
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Abstract
The invention discloses a control mechanism for a two-way overrun clutch on a sewing machine, wherein wedge-shaped fork openings are eccentrically sheathed on a driving shaft, so when the driving shaft rotates, the eccentric fork openings can move in the radical direction and are butted against wedge-shaped moving blocks, at least one butted surface is in inclined arrangement, the wedge-shaped moving blocks can be pushed to move in the axial direction through the radial movement of the wedge-shaped fork openings, then, a pin roller enters a wide position of an accommodating space through the rotation of a pull claw, or the wedge-shaped moving blocks can be pushed to move in a reverse direction through the elastic rebounding force of a second elastic element, then, the pin roller enters a narrow part of the accommodating space under the effect of the elastic rebounding force of a first elastic element, the separation and the reunion of clutches are realized, the left wedge-shaped fork opening and the right wedge-shaped fork opening are always in contact with the wedge-shaped moving blocks in the separation and reunion processes of the left clutch and the right clutch, the collision is avoided, the noise is reduced, the incomplete separation and reunion condition caused by the inertia effect is avoided, and the stable separation and reunion of the left clutch and the right clutch can be realized.
Description
Technical field
the present invention relates to the controlling organization of double rolling key clutch on the Sewing machines.
Background technology
on Sewing machines, the controlling organization of existing double rolling key clutch comprises power transmission shaft, be set in cam, swing arm on the power transmission shaft, be arranged on roller on swing arm one end, promote ring, and cam is provided with the guide groove of arc Qu Bianhua; Double rolling key clutch has two, is oppositely arranged about two double rolling key clutch, and each clutch includes shell, places the rotor of shell; Scrolling realization through roller between rotor and the shell from and close, the feed spool on the Sewing machines is fixed on the shell, the operation principle of the controlling organization of double rolling key clutch is following; Power transmission shaft drives the cam rotation, and nationality should be located in the guide groove of set arc Qu Bianhua on the cam by the pair of rollers on swing arm one end, makes swing arm pushed away by interlock to promote ring to make the intermittence of left and right directions and moves; When the promotion ring moved on to the left side, through promoting locating detent turn on the clutch of left side, feasible left side clutch was in the state that leaves; This moment, right side clutch was in the state that closes; When the promotion ring moved on to the right side, then opposite, promptly the left side clutch was in the state that closes; Right side clutch is in the state that leaves; Again simultaneously two connecting rods respectively with about the link pin of two clutches combines versatilely each other, then through promoting the move left and right of ring, two clutches about drive in turn intermittently; And then make feed spool produce intermittent directed the rotation, reach the feeding effect.But existing sewing machine promotes the locating detent of the move left and right collision clutch of ring when running up; The noise that produces is very big, moreover, and when running up; Owing to promote the inertia that ring exists, the move left and right that causes easily promoting to encircle is not in place, promptly causes the clutch of clutch not thorough.
Summary of the invention
thus the purpose of this invention is to provide on the Sewing machines through wedge prong conflict wedge movable block move accomplish clutch from and close the controlling organization of the double rolling key clutch of realizing stablizing feeding; Reduced noise like this, guaranteed clutch from and close stable.
For achieving the above object, the technical scheme that the present invention adopts is: the controlling organization of double rolling key clutch on the Sewing machines, said double rolling key clutch comprises
Shell with round cavity, said shell fixed cover is located on the feed spool of said Sewing machines, and the shaft centre line of said round cavity and the shaft centre line of said feed spool coincide;
Be arranged in the said round cavity and can be set in the clutch inner core on the said feed spool rotationally; Said clutch inner core has the spaced pellet of circumferencial direction of the said round cavity in a plurality of edges, arbitrarily the adjacent side of adjacent two said pellets all with the receiving space of narrow inner width outward of formation between the circumferential cavity wall of said round cavity;
A plurality of pusher dogs; The said pin that extends along the axial direction of said feed spool that is provided with between adjacent two pellets arbitrarily; All can be arranged with two said pusher dogs arranged in a crossed manner on each said pin rotationally, an end of said a plurality of pusher dogs all stretches out the outside at said clutch inner core;
Can rollably be arranged on respectively in the said receiving space and can be respectively pushed away a plurality of rollers at the wide place that gets into said receiving space of rolling by the other end of said a plurality of pusher dogs, the axial line of each said roller all extends along the axial direction of said feed spool;
A plurality of being arranged on can provide said roller elastic-restoring force to make this roller get into first elastic component at the narrow place of said receiving space between said pellet and the said roller;
When said roller gets into the wide place of said receiving space, gapped between the circumferential cavity wall of said roller and said round cavity; When said roller got into the narrow place of said receiving space, said roller was clamped between the circumferential cavity wall of corresponding said pellet and said round cavity;
The control structure of said double rolling key clutch comprises
Can drive shaft rotating;
The wedge prong, said wedge prong is set on the said driving shaft prejudicially;
The wedge movable block; Said wedge movable block can be set in along the axial direction of said feed spool on the said feed spool movably; Said wedge movable block is between the bifurcated of said pusher dog and said wedge prong; Said wedge movable block has and is enlarge gradually on away from the axial direction of said pusher dog tapered and can stretches out the inconsistent outer surface of an end in said clutch inner core outside with said a plurality of pusher dogs; The bifurcated of said wedge movable block and said wedge prong is inconsistent, and at least one surface tilt ground is provided with in the inconsistent surface of said wedge movable block and said bifurcated;
are arranged on second elastic component that this wedge movable block elastic-restoring force can be provided between said clutch inner core and the said wedge movable block.
preferably; Fixed cover is provided with eccentric wheel on the said driving shaft; Said eccentric wheel is through in the said wedge prong through bearing; The bifurcated of said wedge prong roughly stretches out along the radial direction of said driving shaft, and the axial line of said driving shaft and said feed spool parallels setting.
Owing to the utilization of technique scheme, the present invention compared with prior art has advantage: the wedge prong is set on the driving shaft prejudicially
, when driving shaft rotates like this; Eccentric wedge prong can move radially, and wedge prong and wedge movable block are inconsistent, and at least one is obliquely installed in the inconsistent surface; Can promote the wedge movable block through moving radially of wedge prong like this and move axially, the rotation through pusher dog makes roller get into the wide place of receiving space then, and perhaps the elastic-restoring force through second elastic component can promote the wedge movable block and do reverse moving; Under the elastic-restoring force effect of first elastic component, make roller get into the narrow place of receiving space then, thus realized clutch from and close, on Sewing machines; About clutch has two, about two clutches be oppositely arranged, same; Wedge prong and wedge movable block also have two; Be oppositely arranged all, left and right sides wedge prong cooperate with left and right sides wedge movable block respectively control left and right sides clutch from and close since left and right sides clutch from and the process of closing in; Left and right sides wedge prong contacts with left and right sides wedge movable block all the time; Avoided collision, reduced noise, and left and right sides wedge prong to the impetus of left and right sides wedge movable block be through left and right sides wedge prong on driving shaft since eccentric moving radially of causing cause; Avoided because the clutch halfway situation that effect of inertia causes, realized left and right sides clutch stably from and close.
Description of drawings
Accompanying drawing 1 is a schematic top plan view of the present invention;
Accompanying drawing 2 is a schematic perspective view of the present invention;
accompanying drawing 3 is a STRUCTURE DECOMPOSITION sketch map of the present invention.
The specific embodiment
Structure of the present invention is further set forth below in conjunction with accompanying drawing in
.
are referring to shown in Fig. 1-3; On Sewing machines; Double rolling key clutch 25 has two, and two double rolling key clutch about 25 are oppositely arranged, and left and right sides double rolling key clutch 25 includes shell 4, clutch inner core 2, a plurality of pusher dog 22, a plurality of roller 6 with round cavity 26; Shell 4 fixed covers are located on the feed spool 1; The shaft centre line of the round cavity 26 of shell 4 and the shaft centre line of feed spool 1 coincide, and the rotation that the energy of rotation of shell 4 drives feed spool 1 can realize feeding.Clutch inner core 2 is arranged in the round cavity 26; Clutch inner core 2 can be set on the feed spool 1 rotationally, and clutch inner core 2 has a plurality of along the spaced pellet 5 of the circumferencial direction of round cavity 26, arbitrarily the adjacent side 27 of adjacent two pellets 5 all with the receiving space of narrow inner width outward of formation between the circumferential cavity wall of round cavity 26; A plurality of rollers 6 can rollably be arranged in the receiving space respectively; The axial line of each roller 6 all extends along the axial direction of feed spool 1, is provided with the pin 28 that extends along the axial direction of feed spool 1 arbitrarily between adjacent two pellets 5, all can be arranged with two pusher dogs arranged in a crossed manner 22 rotationally on each pin 28; One end of a plurality of pusher dogs 22 all stretches out the outside at clutch inner core 2; As shown in Figure 3, the other end of a plurality of pusher dogs 22 can push away the wide place that roller 6 rollings get into receiving space respectively, when roller 6 gets into the wide place of receiving spaces; Gapped between the circumferential cavity wall of roller 6 and round cavity 26; Clutch inner core 2 is in the state that leaves with shell 4 like this, and promptly clutch inner core 2 can rotate with respect to shell 4 and feed spool 1, is provided with first elastic component between each pellet 5 of clutch inner core 2 and the corresponding roller 6; Rely on the elastic-restoring force of first elastic component can push away the narrow place that roller 6 gets into receiving space; When roller 6 rolls when getting into the narrow place of receiving spaces, between the pellet 5 that roller 6 is clamped on clutch inner core 2 and the circumferential cavity wall of round cavity 26, clutch inner core 2 and shell 4 are in the state that closes like this; Be that clutch inner core 2 can rotate with shell 4, thereby be with feed spool 1 also to rotate together.The outer narrow inner width of receiving space makes that roller 6 can be under the effect of the pusher dog 22 and first elastic component, realize clutch 25 from and close; Moreover; The outer narrow inner width of receiving space has also played position-limiting action to roller 6, makes roller 6 in receiving space, to roll.
The controlling organization of
double rolling key clutch comprises can drive shaft rotating 10, wedge prong 14 (12), wedge movable block 9, for realize to left and right sides double rolling key clutch from and the control of closing, the wedge prong has two; Two wedge prongs 14 and about 12 are oppositely arranged, and likewise, wedge movable block 9 also has two; About be oppositely arranged; Pusher dog 22 in the left and right sides double rolling key clutch 25 is oppositely arranged, and is as shown in Figure 1, and left and right sides wedge prong 14 and 12 is realized the control of leaving and closing to clutch 25 with the rotation through control pusher dog 22 that cooperates of left and right sides wedge movable block 9; Specifically; Left and right sides wedge prong 14 and 12 all is set on the driving shaft 10 prejudicially, and left and right sides wedge prong 14 and 12 is opposite with respect to the eccentric direction of driving shaft 10, because eccentric the setting; Driving shaft 10 is when the rotation of self axial line; Moving in the radial direction can take place in left and right sides wedge prong 14 and 12, and because eccentric in the opposite direction, and then left and right sides wedge prong 14 and 12 the direction that moves radially are also opposite.Left and right sides wedge movable block 9 all can be set in along the axial direction of feed spool 1 on the feed spool 1 movably; Between the bifurcated 13 of pusher dog 22 and the left wedge prong 14 of left side wedge movable block 9 in left double rolling key clutch 25; Between the bifurcated 18 of pusher dog 22 and the right wedge prong 12 of right wedge movable block 9 in right double rolling key clutch 25; The direction on " left side " " right side " here refers to such an extent that be that the observer is when facing Fig. 1; Observer's the left side is " left side " here, and the right of observer is " right side " here, and left and right sides wedge movable block 9 all has and is the tapered outer surface that enlarges gradually on away from the axial direction of corresponding pusher dog 22; Because the outer surface of left and right sides wedge movable block 9 is tapered; Left and right sides wedge movable block 9 is when the axial direction along feed spool 1 moves like this, and the outer surface of left and right sides wedge movable block 9 can stretch out at an end of clutch inner core 2 outsides inconsistently with corresponding a plurality of pusher dogs 22, rotates thereby promote pusher dog 22.Moving axially of left and right sides wedge movable block 9 through left and right sides wedge prong 14 and 12 regulation and control; Left and right sides wedge movable block 9 is inconsistent with the bifurcated 13 and 18 of left and right sides wedge prong 14 and 12 respectively; At least one surface 3 is provided with obliquely in left and right sides wedge movable block 9 and the inconsistent surface of the bifurcated of corresponding wedge prong; In Fig. 1; Left side wedge movable block 9 all is obliquely installed with the bifurcated 13 inconsistent surfaces of left wedge prong 14 in the same direction; Right wedge movable block 9 also all is obliquely installed with the bifurcated 18 inconsistent surfaces of right wedge prong 12 in the same direction; The incline direction of the inclined surface 3 of left side wedge movable block 9, the inclined surface 3 of right wedge movable block 9 is opposite, in the present embodiment, and the symmetrical setting of center line that the incline direction of the inclined surface 3 of left and right sides wedge movable block 9 extends according to the radial direction along feed spool 1 between the left and right sides wedge movable block 9.The surface that relies on, then left and right sides wedge prong 14 moves with 12 off-centre and can promote moving axially of left and right sides wedge movable block 9, and then pusher dog 22 quilts are being pushed away and are being rotated.Second elastic component that these wedge movable block 9 elastic-restoring forces can be provided is set between clutch inner core 2 and wedge movable block 9; Then in a single day left and right sides wedge movable block 9 has lost the motive force of left and right sides wedge prong 14 and 12; Under the elastic-restoring force effect that relies on second elastic component; Reciprocal moving can be taken place, so also can solenoidoperated cluthes 25 leave and close.Because left and right sides wedge prong 14 contacts with left and right sides wedge movable block 9 respectively with 12 all the time; Rely on bifurcated 13 and 18 the motive force and the elastic-restoring force effect of second elastic component of left and right sides wedge prong 14 and 12; Realized moving axially of left and right sides wedge movable block 9; Rotation through pusher dog 22 makes roller 6 be in the wide place or the narrow place of receiving space then, promptly realized left and right sides clutch 25 from and close, avoided collision like this; Reduced noise; And the impetus of the bifurcated 13 of left and right sides wedge prong 14 and 12 and 18 pairs of left and right sides wedge movable blocks 9 be through left and right sides wedge prong 14 and 12 on driving shaft 10 since eccentric moving radially of causing cause, avoided because the halfway situation of clutch that effect of inertia causes, realized left and right sides clutch 25 stably from and close.
are made for ease and are installed, and in the present embodiment, the structure that left and right sides wedge prong 14 and 12 off-centre are provided with is following; Fixed cover is provided with left and right sides eccentric wheel 7 on the driving shaft 10, and left and right sides eccentric wheel 7 is through in left and right sides wedge prong 14 and 12 through bearing respectively, and left and right sides wedge prong 14 and 12 bifurcated 13 and 18 all roughly stretch out along the radial direction of driving shaft 10; Driving shaft 10 parallels setting with the axial line of feed spool 1, and left and right sides wedge prong 14 is understood moving axially of promotion left and right sides wedge movable block 9 with moving radially of 12 bifurcated 13 and 18 like this, on the perspective plane perpendicular to driving shaft 10 or feed spool 1; Left and right sides eccentric wheel 7 is according to the symmetrical setting of central point of driving shaft 10 or feed spool 1; The eccentric moving direction of left and right sides eccentric wheel 7 is opposite like this, that is to say, left and right sides wedge prong 14 and 12 bifurcated 13 and 18 move radially in the opposite direction; Suppose left wedge prong 14 bifurcated 13 move can push away left wedge movable block 9 conflict left clutches 25 pusher dog 22 (in Fig. 1; Bifurcated 13 moves up, and left wedge movable block 9 is moved to the left), make pusher dog 22 rotate; The pusher dog 22 that rotates is pushing away the wide place that roller 6 gets into receiving space; Then left clutch 25 is in the state that leaves, and bifurcated 18 mobile of right wedge prong 12 made right wedge movable block 9 (in Fig. 1, bifurcated 18 moved down away from the pusher dog 22 of right clutch 25 under the elastic-restoring force effect of second elastic component this moment; Right wedge movable block 9 moves right); The pusher dog 22 of right clutch 25 roller 6 of can't conflicting then, roller 6 gets into the narrow place of receiving space under the elastic-restoring force effect of first elastic component, and this moment, right clutch 25 was in the state that closes.Argumentation based on top that is to say, when left clutch 25 was in the state that leaves, right clutch 25 was in the state that closes, and on the contrary, can draw equally, and when left clutch 25 was in the state that closes, right clutch 25 was in the state that leaves.Left and right sides wedge prong 14 and 12 is provided with and left and right sides wedge prong 14 touches with the surface subsides of the contrary inclination direction of left and right sides wedge movable block 9 with 12 with respect to driving shaft 10 rightabout eccentric, makes the leaving and close and be in opposite state all the time of left and right sides clutch 25.In addition; Move in order to make the bifurcated 13 and 18 of left and right sides wedge prong 14 and 12 can stably promote left and right sides wedge movable block 9; Fixed cover is provided with retainer ring 16 on the feed spool 1; Retainer ring 16 is between the bifurcated 13 and 18 of left and right sides wedge prong 14 and 12, and left and right sides wedge prong 14 and 12 bifurcated 13 and 18 all are resisted against on the radial surface of retainer ring 16, and be as shown in Figure 1; Left and right sides wedge prong 14 and 12 bifurcated 13 and 18 promote left and right sides wedge movable block 9 and move through being resisted against on the retainer ring 16, promote stable like this.
Claims (2)
1. the controlling organization of double rolling key clutch on the Sewing machines, said double rolling key clutch comprises
Shell with round cavity, said shell fixed cover is located on the feed spool of said Sewing machines, and the shaft centre line of said round cavity and the shaft centre line of said feed spool coincide;
Be arranged in the said round cavity and can be set in the clutch inner core on the said feed spool rotationally; Said clutch inner core has the spaced pellet of circumferencial direction of the said round cavity in a plurality of edges, arbitrarily the adjacent side of adjacent two said pellets all with the receiving space of narrow inner width outward of formation between the circumferential cavity wall of said round cavity;
A plurality of pusher dogs; The said pin that extends along the axial direction of said feed spool that is provided with between adjacent two pellets arbitrarily; All can be arranged with two said pusher dogs arranged in a crossed manner on each said pin rotationally, an end of said a plurality of pusher dogs all stretches out the outside at said clutch inner core;
Can rollably be arranged on respectively in the said receiving space and can be respectively pushed away a plurality of rollers at the wide place that gets into said receiving space of rolling by the other end of said a plurality of pusher dogs, the axial line of each said roller all extends along the axial direction of said feed spool;
A plurality of being arranged on can provide said roller elastic-restoring force to make this roller get into first elastic component at the narrow place of said receiving space between said pellet and the said roller;
When said roller gets into the wide place of said receiving space, gapped between the circumferential cavity wall of said roller and said round cavity; When said roller got into the narrow place of said receiving space, said roller was clamped between the circumferential cavity wall of corresponding said pellet and said round cavity;
It is characterized in that: the control structure of said double rolling key clutch comprises
Can drive shaft rotating;
The wedge prong, said wedge prong is set on the said driving shaft prejudicially;
The wedge movable block; Said wedge movable block can be set in along the axial direction of said feed spool on the said feed spool movably; Said wedge movable block is between the bifurcated of said pusher dog and said wedge prong; Said wedge movable block has and is enlarge gradually on away from the axial direction of said pusher dog tapered and can stretches out the inconsistent outer surface of an end in said clutch inner core outside with said a plurality of pusher dogs; The bifurcated of said wedge movable block and said wedge prong is inconsistent, and at least one surface tilt ground is provided with in the inconsistent surface of said wedge movable block and said bifurcated;
Be arranged on second elastic component that this wedge movable block elastic-restoring force can be provided between said clutch inner core and the said wedge movable block.
2. the controlling organization of double rolling key clutch on the Sewing machines according to claim 1; It is characterized in that: fixed cover is provided with eccentric wheel on the said driving shaft; Said eccentric wheel is through in the said wedge prong through bearing; The bifurcated of said wedge prong roughly stretches out along the radial direction of said driving shaft, and the axial line of said driving shaft and said feed spool parallels setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110220905 CN102337646B (en) | 2011-08-03 | 2011-08-03 | Control mechanism for two-way overrun clutch on sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110220905 CN102337646B (en) | 2011-08-03 | 2011-08-03 | Control mechanism for two-way overrun clutch on sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102337646A true CN102337646A (en) | 2012-02-01 |
| CN102337646B CN102337646B (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110220905 Active CN102337646B (en) | 2011-08-03 | 2011-08-03 | Control mechanism for two-way overrun clutch on sewing machine |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5289789A (en) * | 1991-07-15 | 1994-03-01 | Suzuki Manufacturing Co., Ltd. | Knife drive mechanism of sewing machine |
| CN2357023Y (en) * | 1998-06-29 | 2000-01-05 | 蔡荣枝 | Driving structure for feeding mechanism of industrial sewing machine |
| CN1049708C (en) * | 1994-06-09 | 2000-02-23 | 重机公司 | Driving means of sewing machine |
| US6095070A (en) * | 1996-10-04 | 2000-08-01 | Sahl; Johannes | Driving device for feeding material to be sewn in a sewing machine |
| CN2450234Y (en) * | 2000-08-21 | 2001-09-26 | 陈瑞文 | Reverse sewing device for industrial sewing machine |
| CN101215764A (en) * | 2007-12-27 | 2008-07-09 | 启翔针车（上海）有限公司 | Clutch structure of sewing machine |
| CN202181435U (en) * | 2011-08-03 | 2012-04-04 | 苏州日和缝制设备有限公司 | Control mechanism for bidirectional overrunning clutch on sewing machine |
-
2011
- 2011-08-03 CN CN 201110220905 patent/CN102337646B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5289789A (en) * | 1991-07-15 | 1994-03-01 | Suzuki Manufacturing Co., Ltd. | Knife drive mechanism of sewing machine |
| CN1049708C (en) * | 1994-06-09 | 2000-02-23 | 重机公司 | Driving means of sewing machine |
| US6095070A (en) * | 1996-10-04 | 2000-08-01 | Sahl; Johannes | Driving device for feeding material to be sewn in a sewing machine |
| CN2357023Y (en) * | 1998-06-29 | 2000-01-05 | 蔡荣枝 | Driving structure for feeding mechanism of industrial sewing machine |
| CN2450234Y (en) * | 2000-08-21 | 2001-09-26 | 陈瑞文 | Reverse sewing device for industrial sewing machine |
| CN101215764A (en) * | 2007-12-27 | 2008-07-09 | 启翔针车（上海）有限公司 | Clutch structure of sewing machine |
| CN202181435U (en) * | 2011-08-03 | 2012-04-04 | 苏州日和缝制设备有限公司 | Control mechanism for bidirectional overrunning clutch on sewing machine |
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| CN102337646B (en) | 2013-10-23 |
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