CN101845720B - Bobbin case opener of sewing machine - Google Patents
Bobbin case opener of sewing machine Download PDFInfo
- Publication number
- CN101845720B CN101845720B CN200910048136A CN200910048136A CN101845720B CN 101845720 B CN101845720 B CN 101845720B CN 200910048136 A CN200910048136 A CN 200910048136A CN 200910048136 A CN200910048136 A CN 200910048136A CN 101845720 B CN101845720 B CN 101845720B
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- bobbin case
- opener
- pivot
- cam
- tooth bar
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Abstract
The invention relates to a bobbin case opener of a sewing machine, which is characterized in that a cam is arranged on a driving shaft, and a driven piece of the cam forms a rack; the cam drives the rack to be in meshing transmission with a gear on a pivot, and the continuous rotating movement of a driving shaft is directly converted into the reciprocating swinging movement of an opener rod above the pivot from the shape of the rim of the cam so as to open or close a thread channel, so that the connecting rod, the swinging arm and other parts of the original driving mechanism can be saved, thereby saving space and shortening volume; and the driving power is directly connected with a driving shaft, so the rotating speed is only half of a rotating shuttle, thereby reducing the wear of parts and reducing noise, and providing more reasonable time sequence matching for the thread channel.
Description
Technical field
The present invention relates to a kind of bobbin case opener of sewing machine, particularly a kind of Sewing machines that is used for is to drive the device that bobbin case makes the line passage open or close.
Background technology
Usually the passage opener type of drive of bobbin case line is on the shuttle power transmission shaft, to be provided with a deflection mechanism that includes parts such as connecting rod and fulcrum to drive, and reaches the purpose of opening the line passage; But because this deflection mechanism rotating speed is the twice of power transmission shaft with equaling the rotating speed of shuttle, the driver of opener has twice circulation, only needs a circulation and open the line passage, once there is no need, so part damages easily, and noise is bigger.
For addressing the above problem; The Sewing machines of improvement is like invention disclosed patent " Sewing machines ", and its application number is 200380100280.3, and this Sewing machines has the arm of a top; The substrate of a vertical frame and a below housing shape, and be supported with an arm axle in the arm.At the substrate internal support a vertical shuttle is arranged, a shuttle power transmission shaft is driven by a power transmission shaft through a bevel gearing, and power transmission shaft is driven by above-mentioned arm axle through a power transmission toothed belt drive again, and the speed of shuttle power transmission shaft is the twice of power transmission shaft.In shuttle, be supported with the bobbin case that can freely rotate with respect to shuttle, bobbin case has the pole that projects upwards, and two that can be maintained at the pinhole plate downside stop between the projection.When pole when stopping the centre position of projection for two, the air gap of pole both sides and the air gap of top promptly form a continuous line passage.And the mode of opening the line channel is to utilize the opener bar of an opener to abut in the opener projection on the bobbin case, makes bobbin case carry out the rotation with the shuttle direction of rotation, makes pole remain on two and stops between the projection.When the opener bar did not abut in the opener projection and stops bobbin case, bobbin case promptly turned in the same direction with shuttle, pole promptly with wherein one stop that projection is abutted against, and closed line passage.The action of its bobbin case opener be by one be incorporated into the opener driving shaft contact lever and the axial curved surface diskware that is incorporated into power transmission shaft drive.
But it is sliding-contact that above-mentioned structure makes the contact lever and the axial contact form of curved surface diskware, also is unfavorable for installing roller, wears and tears greatlyyer, and the motion of contact lever is the swing mode, takies bigger space.Therefore the present invention solves to the problems referred to above.
Summary of the invention
One of the object of the invention is: a kind of bobbin case opener of sewing machine is provided; By cam driven rack and pinion engaged transmission; The shape that rotatablely moves continuously by the cam wheel rim of power transmission shaft is directly changed into oscillating traverse motion, opens or the closed line passage, with parts such as the connecting rod that saves original driving mechanism and swing arms; Can save the space, reduced volume.
Two of the object of the invention is: a kind of bobbin case opener of sewing machine is provided; The power of its driving is directly put on the pivot of opener bar through the contact of rolling by power transmission shaft; So can reduce parts depreciation, reduce noise, and can more reasonably sequential coupling be provided for the line passage.
For reaching above-mentioned purpose, bobbin case opener of sewing machine of the present invention is located on the rotating shuttle seat of Sewing machines, disposes a power transmission shaft in this rotating shuttle seat, and this bobbin case opener comprises: a cam, be fixed on this power transmission shaft, and its wheel rim is provided with the protuberance of control sequential.One has the tooth bar of tooth portion, and movable supporting is connected to the wheel rim of this cam in this rotating shuttle seat with a contact jaw.One upper end has the pivot of an opener bar, is articulated in this rotating shuttle seat, this pivot be provided with one with this rack teeth meshed gears, on the pivot and socket one torsion spring.
During other position outside tooth bar is connected to nose of cam, the opener bar leaves the opener projection on the bobbin case, and at this moment, bobbin case can rotate with the rotating shuttle of supporting bobbin case, be connected on first stopper of pinhole plate up to the pole of bobbin case, and the closed line passage.
When the power transmission shaft rotation makes the protuberance of cam contact with the contact jaw of tooth bar; Protuberance promotes tooth bar and moves outward; Rack drives and its meshed gears rotate; Pivot is clockwise rotated, be abutted against opener projection to the swing of bobbin case direction, the bobbin case edge and the direction of rotating shuttle direction of rotation are rotated in bobbin case and drive the opener bar.At this moment, pole is left first stopper, and the release line passage, and torsion spring is reversed by drive.When cam is rotated further the contact jaw that makes protuberance leave tooth bar, make gear and pivot reverse rotation by torsion spring, let tooth bar reset, and let the opener bar leave the opener projection.At this moment, bobbin case can rotate with rotating shuttle, is connected on first stopper up to pole, once more the closed line passage.
Description of drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is used for the installation position sketch map of Sewing machines for the present invention.
Fig. 3 is the floor map of a1 direction among Fig. 2 of the present invention.
Fig. 4 is the vertical view of a2 direction among Fig. 2 of the present invention.
Specific embodiments
Below in conjunction with accompanying drawing the present invention is elaborated:
Referring to Fig. 1, Fig. 2, Fig. 3, bobbin case opener of sewing machine of the present invention includes a cam 1, and cam 1 is to be installed on the power transmission shaft 2, and power transmission shaft 2 is in the rotating shuttle seat 4 that is installed on the Sewing machines substrate 3, and is as shown in Figure 2.The wheel rim of this cam 1 has the protuberance 10 of control action sequential; One have tooth portion 50 and plane 51 tooth bar 5 be connected to the wheel rim of cam 1 with its contact jaw 52; And the other end is arranged in the rotating shuttle seat 4 via a conjunction 6, and this contact jaw 52 is to contact with the wheel rim of this cam 1 with a roller 520.This conjunction 6 is provided with a combined hole 61, a jack 62 and a containing hole 63, and the other end of this tooth bar 5 promptly is inserted in the combined hole 61 versatilely, and a latch 64 is inserted in this jack 62, and joins with the plane 51 of tooth bar 5, prevents that tooth bar from rotating.
The pivot 7 that one upper end has opener bar 70 is articulated in this rotating shuttle seat 4; Pivot 7 is provided with a gear 71; Pivot 7 also passes the containing hole 63 of conjunction 6; Make gear 71 be arranged in conjunction 6 and with 50 engagements of the tooth portion of this tooth bar 5, make tooth bar 5 drive pivots 7 and rotate, opener bar 70 swings of order top.Pivot 7 is provided with a rotor plate 72 and a fixture 73 in the below of gear 71; Be respectively equipped with on rotor plate 72 and the fixture 73 and collude hole 720 and fixing hole 730; Be socketed with a torsion spring 74 between rotor plate 72 and the fixture 73, the two ends of torsion spring 74 then plug respectively is fixed in above-mentioned colluding in hole 720 and the fixing hole 730.The torsion of torsion spring 74 makes the wheel rim of roller 520 permanent butt cams 1.The bottom of pivot 7 is passed rotating shuttle seat 4 and is had a ring-type draw-in groove 75, in the draw-in groove 75 and with the be fastened axial location of this pivot 7 of a jump ring 76.
Referring to Fig. 3, shown in Figure 4, bobbin case 8 has an opener projection 81 and an outstanding pole 82, when opener bar 70 when bobbin case 8 directions are swung, can abut against the opener projection 81 of bobbin case 8.During other position outside tooth bar 5 is connected to cam 1 protuberance 10, opener bar 70 leaves opener projection 81, and at this moment, bobbin case 8 can rotate with the rotating shuttle 9 of supporting bobbin case 8, be connected on first stopper 31 of pinhole plate 30 the closed line passage up to pole 82.When power transmission shaft 2 rotations make the protuberance 10 of cam 1 contact with the contact jaw 52 of tooth bar 5; Protuberance 10 promotes tooth bar 5 and moves outward; Tooth bar 5 drives with its meshed gears 71 and rotates; Pivot 7 is clockwise rotated, be abutted against in opener projection 81 to the swing of bobbin case 8 directions, bobbin case 8 edges and the direction of rotating shuttle 9 direction of rotation are rotated and drive opener bar 70.At this moment, pole 82 is left first stopper 31, and the release line passage.When pivot 7 rotated, torsion spring 74 was driven by rotor plate 72 and reverses.When cam 1 is rotated further the contact jaw 52 that makes protuberance 10 leave tooth bar 5, make gear 71 and pivot 7 reverse rotations by torsion spring 74, let tooth bar 5 reset, and let opener bar 70 leave opener projection 81.At this moment, bobbin case 8 can rotate with rotating shuttle 9, is connected on first stopper 31 up to pole 82, once more the closed line passage.
The present invention drives tooth bar 5 and gear 71 engaged transmission by cam 1; Rotatablely moving continuously of power transmission shaft 2 is directly changed into the oscillating traverse motion of opener bar 70 by the shape of cam 1 wheel rim; Can save the parts such as connecting rod and swing arm of first front driving mechanism,, dwindle overall volume to save the space.And the power of its driving is directly connected in power transmission shaft 2, and speed is identical with power transmission shaft 2, and promptly power transmission shaft 2 circles; The opener switch once; And the speed of rotating shuttle 9 is twices of power transmission shaft 2, so the speed of opener has only the half the of rotating shuttle 9, so can reduce wearing and tearing; Reduce noise, and can more reasonably sequential coupling be provided for the line passage.
The above is the present invention's preferred embodiment.
Claims (6)
1. bobbin case opener of sewing machine; Be located on the rotating shuttle seat (4) of Sewing machines; Form by power transmission shaft (2), cam (1), tooth bar (5), pivot (7); It is characterized in that: a power transmission shaft (2) is installed on the rotating shuttle seat, and cam (1) is fixed on this power transmission shaft (2), and its wheel rim is provided with the protuberance (10) of control sequential; One has the tooth bar (5) of tooth portion, and movable supporting is connected to the wheel rim of cam (1) in this rotating shuttle seat (4) with a contact jaw; One upper end has the pivot (7) of an opener bar (70), is articulated in this rotating shuttle seat (4), this pivot (7) be provided with one with this tooth bar (5) tooth portion meshed gears (71), pivot (7) is gone up and socket one torsion spring (74).
2. a kind of bobbin case opener of sewing machine according to claim 1; It is characterized in that; Have a rotor plate (72) and a fixture (73) on this pivot (7); Be respectively equipped with one on rotor plate (72) and the fixture (73) and collude hole (720) and fixing hole (730), the two ends of this torsion spring (74) plug respectively to be fixed in this and to collude hole (720) and fixing hole (730).
3. a kind of bobbin case opener of sewing machine according to claim 1; It is characterized in that; The other end activity of this tooth bar (5) be incorporated into one be fixed in this rotating shuttle seat (4) conjunction (6); This conjunction (6) is provided with a combined hole (61), and the other end of this tooth bar (5) promptly is inserted in this combined hole (61).
4. a kind of bobbin case opener of sewing machine according to claim 3 is characterized in that: this conjunction (6) is provided with a jack (62), and this tooth bar (5) has a plane (51), and a latch is inserted in this jack (62), and joins with the plane (51) of this tooth bar (5).
5. a kind of bobbin case opener of sewing machine according to claim 3 is characterized in that: this conjunction (6) is provided with a containing hole (63), and this pivot (7) is to pass this containing hole (63), makes this gear (71) be arranged in this conjunction (6).
6. a kind of bobbin case opener of sewing machine according to claim 1 is characterized in that: the contact jaw of this tooth bar (5) has a roller (520).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048136A CN101845720B (en) | 2009-03-24 | 2009-03-24 | Bobbin case opener of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048136A CN101845720B (en) | 2009-03-24 | 2009-03-24 | Bobbin case opener of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101845720A CN101845720A (en) | 2010-09-29 |
| CN101845720B true CN101845720B (en) | 2012-10-24 |
Family
ID=42770525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910048136A Expired - Fee Related CN101845720B (en) | 2009-03-24 | 2009-03-24 | Bobbin case opener of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101845720B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696164A (en) * | 2013-12-19 | 2014-04-02 | 吴江市菀坪宝得利缝制设备机械厂 | Column zigzag seam rotation shuttle seat for sewing machine |
| CN107059268B (en) * | 2017-06-16 | 2022-09-30 | 浙江乐江机械有限公司 | Automatic shuttle peg replacing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326027A (en) * | 2000-05-25 | 2001-12-12 | 杜尔科普-阿德乐股份有限公司 | Sewing machine |
| CN1692194A (en) * | 2002-12-28 | 2005-11-02 | 杜尔克普-阿德勒股份公司 | Sewing machine |
| CN1796634A (en) * | 2004-12-28 | 2006-07-05 | 重机公司 | Opening apparatus for sewing machine |
| CN201400771Y (en) * | 2009-03-24 | 2010-02-10 | 启翔针车（上海）有限公司 | Bobbin case opener for sewing machine |
-
2009
- 2009-03-24 CN CN200910048136A patent/CN101845720B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326027A (en) * | 2000-05-25 | 2001-12-12 | 杜尔科普-阿德乐股份有限公司 | Sewing machine |
| CN1692194A (en) * | 2002-12-28 | 2005-11-02 | 杜尔克普-阿德勒股份公司 | Sewing machine |
| CN1796634A (en) * | 2004-12-28 | 2006-07-05 | 重机公司 | Opening apparatus for sewing machine |
| CN201400771Y (en) * | 2009-03-24 | 2010-02-10 | 启翔针车（上海）有限公司 | Bobbin case opener for sewing machine |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-306879A 2002.10.22 |
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| Publication number | Publication date |
|---|---|
| CN101845720A (en) | 2010-09-29 |
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Granted publication date: 20121024 Termination date: 20150324 |
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