CN102337646B - 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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- CN102337646B CN102337646B CN 201110220905 CN201110220905A CN102337646B CN 102337646 B CN102337646 B CN 102337646B CN 201110220905 CN201110220905 CN 201110220905 CN 201110220905 A CN201110220905 A CN 201110220905A CN 102337646 B CN102337646 B CN 102337646B
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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 collisionis 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 two-way overrun clutch on sewing machine.
Background technology
On Sewing machines, the controlling organization of existing double rolling key clutch comprises power transmission shaft, be set in the cam on the power transmission shaft, swing arm, be arranged on the roller on swing arm one end, promote ring, cam is provided with the guide groove of arc Qu Bianhua, double rolling key clutch has two, be oppositely arranged about two double rolling key clutch, each clutch includes shell, place the rotor of shell, scrolling realization by roller between rotor and the shell from close, feed spool on the Sewing machines is fixed on the shell, the operation principle of the controlling organization of double rolling key clutch is as follows, the rotation of power transmission shaft band moving cam, 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, so that swing arm is being pushed away by interlock and is promoting ring and make the intermittence of left and right directions and move, when the promotion ring moves on to the left side, by promoting locating detent turn on the clutch of left side, so that the left side clutch be in from state, this moment, right side clutch was in the state that closes, when the promotion ring moves on to the right side, then opposite, namely the left side clutch is in the state that closes, right side clutch be in from state, again simultaneously two connecting rods respectively with about the link pin of two clutches mutually be combined actively, then by promoting the move left and right of ring, two clutches about intermittently driving in turn, and then so that feed spool produces intermittent directional rotating, reach the feeding effect.But existing Sewing machines promotes the locating detent of the move left and right collision clutch of ring when running up, the noise that produces is very large, moreover, and when running up, owing to promote the inertia that ring exists, cause easily the move left and right that promotes to encircle not in place, namely cause the clutch of clutch not thorough.
Summary of the invention
Thereby the purpose of this invention is to provide on the Sewing machines by wedge prong conflict wedge movable block move to finish clutch from the controlling organization that closes the double rolling key clutch of realizing stablizing feeding, reduced like this noise, guaranteed clutch from close stable.
For achieving the above object, the technical solution used in the present invention is: the controlling organization of two-way overrun clutch on sewing machine, described double rolling key clutch comprises
Shell with round cavity, described shell fixed cover is located on the feed spool of described Sewing machines, and the shaft centre line of described round cavity and the shaft centre line of described feed spool coincide;
Be arranged in the described round cavity and can be set in rotationally clutch inner core on the described feed spool, described clutch inner core has a plurality of along the spaced pellet of the circumferencial direction of described round cavity, and the adjacent side of two described pellets of arbitrary neighborhood forms the receiving space of outer narrow inner width all and between the circumferential cavity wall of described round cavity;
A plurality of pusher dogs, be provided with the pin that extends along the axial direction of described feed spool between two pellets of described arbitrary neighborhood, all can be arranged with rotationally two described pusher dogs arranged in a crossed manner on each described pin, an end of described a plurality of pusher dogs all stretches out the outside at described clutch inner core;
Can rollably be arranged on respectively in the described receiving space and can be respectively pushed away a plurality of rollers at the wide place that enters described receiving space of rolling by the other end of described a plurality of pusher dogs, the axial line of each described roller all extends along the axial direction of described feed spool;
A plurality of being arranged on can provide described roller elastic-restoring force between described pellet and the described roller so that this roller enters first elastic component at the narrow place of described receiving space;
When described roller enters the wide place of described receiving space, gapped between the circumferential cavity wall of described roller and described round cavity; When described roller entered the narrow place of described receiving space, described roller was clamped between the circumferential cavity wall of corresponding described pellet and described round cavity;
The control structure of described double rolling key clutch comprises
The driving shaft that can rotate;
The wedge prong, described wedge prong is set on the described driving shaft prejudicially;
The wedge movable block, described wedge movable block can be set in along the axial direction of described feed spool on the described feed spool movably, described wedge movable block is between the bifurcated of described pusher dog and described wedge prong, described wedge movable block has and is enlarge gradually on away from the axial direction of described pusher dog tapered and can stretches out at the inconsistent outer surface of an end of described clutch inner core outside with described a plurality of pusher dogs, the bifurcated of described wedge movable block and described wedge prong is inconsistent, and at least one surface tilt ground arranges in the inconsistent surface of described wedge movable block and described bifurcated;
Be arranged on the second elastic component that this wedge movable block elastic-restoring force can be provided between described clutch inner core and the described wedge movable block.
Preferably, fixed cover is provided with eccentric wheel on the described driving shaft, described eccentric wheel is through in the described wedge prong by bearing, and the bifurcated of described wedge prong roughly stretches out along the radial direction of described driving shaft, and described driving shaft parallels setting with the axial line of described feed spool.
Because the utilization of technique scheme, the present invention compared with prior art has following advantages: the wedge prong is set on the driving shaft prejudicially, when driving shaft rotates like this, eccentric wedge prong can move radially, wedge prong and wedge movable block are inconsistent, at least one is obliquely installed in the inconsistent surface, can promote the wedge movable block by moving radially of wedge prong like this moves axially, then the rotation by pusher dog is so that roller enters the wide place of receiving space, perhaps the elastic-restoring force by the second elastic component can promote the oppositely movement of wedge movable block do, then under the elastic-restoring force effect of the first elastic component so that roller enters the narrow place of receiving space, thereby realized clutch from close, on Sewing machines, about clutch has two, about two clutches be oppositely arranged, equally, 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 to control left and right sides clutch from close, since left and right sides clutch from the process of closing in, left and right sides wedge prong contacts all the time with left and right sides wedge movable block, avoided collision, reduced noise, and left and right sides wedge prong to the impetus of left and right sides wedge movable block be by 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 close.
Description of drawings
Accompanying drawing 1 is schematic top plan view of the present invention;
Accompanying drawing 2 is schematic perspective view of the present invention;
Accompanying drawing 3 is STRUCTURE DECOMPOSITION schematic diagram of the present invention.
The specific embodiment
Further set forth structure of the present invention below in conjunction with accompanying drawing.
Shown in Fig. 1-3, on Sewing machines, double rolling key clutch 25 has two, two double rolling key clutch about 25 are oppositely arranged, 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, and shell 4 fixed covers are located on the feed spool 1, and the shaft centre line of the round cavity 26 of shell 4 and the shaft centre line of feed spool 1 coincide, the rotation of shell 4 can drive the rotation of 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, clutch inner core 2 has a plurality of along the spaced pellet 5 of the circumferencial direction of round cavity 26, the adjacent side 27 of two pellets 5 of arbitrary neighborhood forms the receiving space of outer narrow inner width all and 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, be provided with the pin 28 that extends along the axial direction of feed spool 1 between two pellets 5 of arbitrary neighborhood, all can be arranged with rotationally two pusher dogs arranged in a crossed manner 22 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 respectively the wide place that roller 6 rollings enter receiving space, when roller 6 enters the wide place of receiving space, gapped between the circumferential cavity wall of roller 6 and round cavity 26, like this clutch inner core 2 and shell 4 be in from state, be that clutch inner core 2 can rotate with respect to shell 4 and feed spool 1, be provided with the first elastic component between each pellet 5 of clutch inner core 2 and the corresponding roller 6, rely on the elastic-restoring force of the first elastic component can push away the narrow place that roller 6 enters receiving space, when roller 6 rollings enter the narrow place of receiving space, roller 6 is clamped between the circumferential cavity wall of the pellet 5 of clutch inner core 2 and round cavity 26, clutch inner core 2 is in the state that closes with shell 4 like this, be that clutch inner core 2 can rotate with shell 4, thereby also rotate together with feed spool 1.The outer narrow inner width of receiving space so that roller 6 can be under the effect of pusher dog 22 and the first elastic component, realize clutch 25 from close, moreover, the outer narrow inner width of receiving space has also played position-limiting action to roller 6, so that roller 6 can only roll in receiving space.
The controlling organization of double rolling key clutch comprises the driving shaft 10 that can rotate, wedge prong 14(12), wedge movable block 9, for realize to left and right sides double rolling key clutch from the control of closing, the wedge prong has two, two wedge prongs 14 and about 12 are oppositely arranged, similarly, 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, as shown in Figure 1, left and right sides wedge prong 14 and 12 with left and right sides wedge movable block 9 cooperate rotation by control pusher dog 22 realize to clutch 25 from the control of closing, 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 setting, when driving shaft 10 rotates around the Pivot Point Center line, left and right sides wedge prong 14 and 12 movements that can occur in the radial direction, and because eccentric opposite direction, 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 pusher dog 22 and the bifurcated 13 of left wedge prong 14 of left wedge movable block 9 in left double rolling key clutch 25, between the pusher dog 22 and the bifurcated 18 of 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, the right of observer is " right side " here, 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, 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 by left and right sides wedge prong 14 and 12 regulation and control of left and right sides wedge movable block 9, 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 arranges obliquely in left and right sides wedge movable block 9 and the inconsistent surface of the bifurcated of corresponding wedge prong, in Fig. 1, the bifurcated 13 inconsistent surfaces of left wedge movable block 9 and left wedge prong 14 all are obliquely installed in the same direction, the bifurcated 18 inconsistent surfaces of right wedge movable block 9 and right wedge prong 12 also all are obliquely installed in the same direction, the inclined surface 3 of left wedge movable block 9, the incline direction of the inclined surface 3 of right wedge movable block 9 is opposite, in the present embodiment, 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 and 12 off-centre move and can promote moving axially of left and right sides wedge movable block 9, and then pusher dog 22 is pushed rotation.The 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 the second elastic component, reciprocal movement can occur, so also can solenoidoperated cluthes 25 from close.Because left and right sides wedge prong 14 contacts with left and right sides wedge movable block 9 respectively all the time with 12, rely on bifurcated 13 and 18 motive force and the elastic-restoring force effect of the 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, then the rotation by pusher dog 22 is so that roller 6 is in wide place or the narrow place of receiving space, namely realized left and right sides clutch 25 from close, avoided like this collision, 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 by left and right sides wedge prong 14 and 12 on driving shaft 10 since eccentric moving radially of causing cause, avoided because the clutch halfway situation that effect of inertia causes, realized left and right sides clutch 25 stably from close.
Make and install for convenient, in the present embodiment, the structure of left and right sides wedge prong 14 and 12 eccentric setting is as follows, fixed cover is provided with left and right sides eccentric wheel 7 on the driving shaft 10, left and right sides eccentric wheel 7 is through in left and right sides wedge prong 14 and 12 by bearing respectively, 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, like this left and right sides wedge prong 14 and 12 bifurcated 13 and 18 move radially and to promote moving axially of left and right sides wedge movable block 9, 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 opposite direction, the movement of supposing the bifurcated 13 of left wedge prong 14 can push away the pusher dog 22(of left wedge movable block 9 conflict left clutches 25 in Fig. 1, bifurcated 13 moves up, left wedge movable block 9 is moved to the left), so that pusher dog 22 rotates, the pusher dog 22 that rotates is pushing away the wide place that roller 6 enters receiving space, then left clutch 25 be in from state, this moment right wedge prong 12 bifurcated 18 movement so that right wedge movable block 9 under the elastic-restoring force effect of the second elastic component away from the pusher dog 22(of right clutch 25 in Fig. 1, bifurcated 18 moves down, right wedge movable block 9 moves right), the pusher dog 22 of right clutch 25 roller 6 of can't conflicting then, roller 6 enters the narrow place of receiving space under the elastic-restoring force effect of the first elastic component, this moment, right clutch 25 was in the state that closes.Discussion based on top that is to say, left clutch 25 be in from state the time, right clutch 25 is in the state that closes, on the contrary, can draw equally, when left clutch 25 is in the state that closes, right clutch 25 be in from state.Left and right sides wedge prong 14 and 12 with respect to the rightabout eccentric setting of driving shaft 10 and left and right sides wedge prong 14 and 12 and the surface label of the reverse inclination direction of left and right sides wedge movable block 9 touch so that left and right sides clutch 25 from being in all the time opposite state with closing.In addition, for so that the bifurcated 13 of left and right sides wedge prong 14 and 12 and 18 can stably promote left and right sides wedge movable block 9 moves, 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, 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, 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 by being resisted against on the retainer ring 16, promote so stable.
Claims (2)
1. the controlling organization of two-way overrun clutch on sewing machine, described double rolling key clutch comprises
Shell with round cavity, described shell fixed cover is located on the feed spool of described Sewing machines, and the shaft centre line of described round cavity and the shaft centre line of described feed spool coincide;
Be arranged in the described round cavity and can be set in rotationally clutch inner core on the described feed spool, described clutch inner core has a plurality of along the spaced pellet of the circumferencial direction of described round cavity, and the adjacent side of two described pellets of arbitrary neighborhood forms the receiving space of outer narrow inner width all and between the circumferential cavity wall of described round cavity;
A plurality of pusher dogs, be provided with the pin that extends along the axial direction of described feed spool between two pellets of described arbitrary neighborhood, all can be arranged with rotationally two described pusher dogs arranged in a crossed manner on each described pin, an end of described a plurality of pusher dogs all stretches out the outside at described clutch inner core;
Can rollably be arranged on respectively in the described receiving space and can be respectively pushed away a plurality of rollers at the wide place that enters described receiving space of rolling by the other end of described a plurality of pusher dogs, the axial line of each described roller all extends along the axial direction of described feed spool;
A plurality of being arranged on can provide described roller elastic-restoring force between described pellet and the described roller so that this roller enters first elastic component at the narrow place of described receiving space;
When described roller enters the wide place of described receiving space, gapped between the circumferential cavity wall of described roller and described round cavity; When described roller entered the narrow place of described receiving space, described roller was clamped between the circumferential cavity wall of corresponding described pellet and described round cavity;
It is characterized in that: the control structure of described double rolling key clutch comprises
The driving shaft that can rotate;
The wedge prong, described wedge prong is set on the described driving shaft prejudicially;
The wedge movable block, described wedge movable block can be set in along the axial direction of described feed spool on the described feed spool movably, described wedge movable block is between the bifurcated of described pusher dog and described wedge prong, described wedge movable block has and is enlarge gradually on away from the axial direction of described pusher dog tapered and can stretches out at the inconsistent outer surface of an end of described clutch inner core outside with described a plurality of pusher dogs, the bifurcated of described wedge movable block and described wedge prong is inconsistent, and at least one surface tilt ground arranges in the inconsistent surface of described wedge movable block and described bifurcated;
Be arranged on the second elastic component that this wedge movable block elastic-restoring force can be provided between described clutch inner core and the described wedge movable block;
Described double rolling key clutch, described wedge prong, described wedge movable block all has two, the pusher dog of two described double rolling key clutch is oppositely arranged, two described wedge prongs are opposite with respect to the eccentric direction of described driving shaft, each described wedge movable block is between the bifurcated of the pusher dog of a described double rolling key clutch and corresponding described wedge prong, the bifurcated of described two wedge prongs matches with two described wedge movable blocks respectively, the rotation of the pusher dog by controlling corresponding described double rolling key clutch realize to described two double rolling key clutch from the control of closing, control these two double rolling key clutch from being in all the time opposite state with closing.
2. the controlling organization of two-way overrun clutch on sewing machine according to claim 1, it is characterized in that: fixed cover is provided with eccentric wheel on the described driving shaft, described eccentric wheel is through in the described wedge prong by bearing, the bifurcated of described wedge prong roughly stretches out along the radial direction of described driving shaft, and described driving shaft parallels setting with the axial line of described feed spool.
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 CN102337646A (en) | 2012-02-01 |
| CN102337646B true 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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| CN (1) | CN102337646B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3115907B2 (en) * | 1991-07-15 | 2000-12-11 | 株式会社鈴木製作所 | Sewing machine drive mechanism |
| JP2829240B2 (en) * | 1994-06-09 | 1998-11-25 | ジューキ株式会社 | Drive of sewing machine |
| AT404603B (en) * | 1996-10-04 | 1999-01-25 | Naehtechnik Sahl Ges M B H | DRIVE DEVICE FOR INTERMITTENT CONVEYOR MOVEMENT |
| 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 |
| CN101215764B (en) * | 2007-12-27 | 2011-05-04 | 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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2011
- 2011-08-03 CN CN 201110220905 patent/CN102337646B/en active Active
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| CN102337646A (en) | 2012-02-01 |
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