CN1948587B - Driving mechanism of sewing machine - Google Patents
Driving mechanism of sewing machine Download PDFInfo
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- CN1948587B CN1948587B CN2006101179692A CN200610117969A CN1948587B CN 1948587 B CN1948587 B CN 1948587B CN 2006101179692 A CN2006101179692 A CN 2006101179692A CN 200610117969 A CN200610117969 A CN 200610117969A CN 1948587 B CN1948587 B CN 1948587B
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Abstract
The invention offers a drive gear of sewing machine, which belongs to the field of mechanical technique. It solves problems of low using stability and difficult maintenance. The drive gear contains entity and cylindrical pedestal outside entity. There is a basic shaft on entity which is parallel to cylindrical pedestal. At least one parallel lay shaft is set beside basic shaft and a parallel upper spindle is set above basic shaft. They rotate synchronously by basic shaft driving. The drive gear has much strongpoint including rational layout, small holding space, stable driving, small noise and high working precision.
Description
Technical field
The present invention relates to field of mechanical technique, especially relate to drive gear of sewing machine.
Background technology
Drive gear of sewing machine is most important to the influence of complete machine, and reasonably transmission mechanism not only can reduce vibration, improves machining accuracy; But also can cut down the consumption of energy, reduce noise, be convenient to manipulate.
Various processing occasion also has nothing in common with each other to the requirement of Sewing machines.Barrel such as the sleeve portion of dress material, trunk are become the cloth of reservation shape to be rolled into tubular by severing, and the edge of overlapping proper width and sewing up mutually forms.In order to implement such stitching, the cloth that is rolled into tubular is passed the front end of the barrel susceptor in thin footpath, and apply from the front end of this barrel susceptor to the axial feeding of bottom and make.
In order to improve the performance of this Sewing machines, simplify complete machine structure, people have carried out long-term exploration, have proposed various embodiments.For example, Chinese patent literature discloses a kind of Sewing machines (application number: 200410030273.7), set up power transmission shaft in the inside upper part of sewing machine body with the machine spindle almost parallel of the lower inside that is set up in sewing machine body.In addition, on the leading section of sewing machine arm with machine spindle and power transmission shaft almost parallel and set up the needle bar driving shaft, setting up driving belt respectively between machine spindle and the power transmission shaft and between power transmission shaft and the needle bar driving shaft, the rotation of machine spindle is passed to by belt transmission on power transmission shaft and the needle bar driving shaft, be passed to again on the needle bar near the rotation of the needle bar driving shaft that brings by this transmission, by the structure that makes the needle bar knee-action, can prevent to vibrate and the generation of noise and carrying out smoothly and the roughly transmission from machine spindle of the needle bar of the prominent sewing machine arm front end of establishing on the direction of quadrature of machine spindle.
This scheme has been improved the performance of Sewing machines to a certain extent, but because its transmission mechanism and barrel susceptor are roughly quadrature setting, like this, taking up room of whole device is just bigger, makes whole type seem comparatively heavy.And the left and right sides weight of transmission mechanism is difficult to balance, causes the body nodal point shakiness easily when work, causes and rocks, and influences machining accuracy.In addition, most transmission mechanisms concentrate on the power transmission shaft, though can make this part-structure compactness, make the difficulty of installation, maintenance and maintenance increase so on the contrary.The density of parts is too concentrated, causes the phase mutual interference easily.
Summary of the invention
The objective of the invention is at the problems referred to above, provide a kind of rationally distributed, simple in structure, it is little to take up room, stressed steady, is convenient to the drive gear of sewing machine of installing, debugging.
For achieving the above object, the present invention has adopted following technical proposal: this drive gear of sewing machine, comprise body, protrude in this external barrel susceptor, on body, be provided with a main shaft, it is characterized in that, described main shaft and barrel susceptor be arranged in parallel, at the other countershaft that is provided with at least one setting in parallel of main shaft, also be provided with above the main shaft one in parallel on axle, and described countershaft and last axle can rotate under the driving of main shaft synchronously.
The present invention creatively makes transmission mechanism and barrel susceptor be arranged in parallel, can dwindle the size of whole device lateral like this, reduces space hold.On the other hand, simplified overall structure, made the barycentre steadiness of whole device.By many countershafts are set, can solve the problem that part is too concentrated, be easy for installation and maintenance.When needs increase or reduce part, can only dismantle the countershaft at this part place, and to other parts without any influence.In addition, when many countershafts were set, each countershaft can contourly be provided with; In order to make layout more reasonable, make full use of the space, also can not contour setting.
In above-mentioned drive gear of sewing machine, link to each other by synchronous belt between described main shaft and the countershaft, also link to each other between main shaft and the last axle by synchronous belt; Side at main shaft can be provided with 1～3 countershaft.
The quantity of countershaft is set as required, can countershaft of each function setting, also can a plurality ofly be provided with simultaneously.When function is made in the needs change, also can expand or reduce main shaft, greatly improved the flexibility of using.
In above-mentioned drive gear of sewing machine, be fixed with tooth lifting cam on the described main shaft, tooth lifting cam drives the tooth mechanism work of lifting; The above-mentioned tooth mechanism of lifting comprises the linkage that links to each other with tooth lifting cam, and the retainer that links to each other with linkage.
In above-mentioned drive gear of sewing machine, be fixed with feeding cam on the described main shaft, feeding cam drives feed mechanism work; Above-mentioned feed mechanism comprises the feeding connecting rod that links to each other with feeding cam, the other end of feeding connecting rod is connected with the curved arm rod of center on dead axle, the two ends of connecting plate are connected with crank with curved arm rod respectively, above-mentioned crank is fixed in the rotating shaft, in rotating shaft, also be fixed with feeding crank and differential crank, the feeding crank links to each other with the feeding retainer by the feeding connecting rod, and differential crank links to each other with differential retainer by differential connecting rod.By the rotation of main shaft, drive feeding retainer and differential retainer work simultaneously, realize the automatic transport cloth.
In above-mentioned drive gear of sewing machine, be fixed with the balancing point cam on the described countershaft, the balancing point cam drives the work of looper left-right swinging mechanism by the balancing point connecting rod.
In above-mentioned drive gear of sewing machine, be fixed with on the described countershaft and protect needle cam, protect needle cam and protect the pin mechanism action by protecting the drive of pin connecting rod.
In above-mentioned drive gear of sewing machine, be fixed with bent axle on the described countershaft, described bent axle drives the looper mechanism's work that seesaws; The above-mentioned looper mechanism that seesaws comprises the crankshaft-link rod that links to each other with bent axle, and crankshaft-link rod links to each other with the bar of cranking arm on being enclosed within locating shaft, and the bar of cranking arm links to each other with pushing-pulling-rack by push rod.
In above-mentioned drive gear of sewing machine, be fixed with on the described upward axle and drive needle cam and the needle cam that stretches tight; Drive needle cam and drive the pin connecting rod and link to each other, the other end that drives the pin connecting rod is hinged with the rocking bar that is enclosed within on the back shaft, and the rocking bar other end is hinged with the needle bar mechanism that vertically is provided with; The needle cam that stretches tight links to each other with balance staff, and the balance staff other end is fixed with and connects handle, connects handle and links to each other with the needle shaft that stretches tight by joint pin.
The rotation of last axle makes drives the pin connecting rod and moves up and down (ignoring its side-to-side movement), swings on back shaft thereby drive rocking bar, realizes that by a linkage needle bar mechanism that vertically is provided with moves up and down again.Simultaneously, balance staff drives and connects the handle action, connects handle and impels the needle shaft swing work of stretching tight by joint pin, reduces friction and noise.
In above-mentioned drive gear of sewing machine, also be provided with a worm gear on the described main shaft, worm gear can be meshed with the worm screw on the oil pump.By the cooperating of worm gear and worm screw, can drive oil pump work, for the parts of transmission mechanism provide lubricated, reduce friction and noise.
In above-mentioned drive gear of sewing machine, be fixed with bevel gear one on the described countershaft, bevel gear one is meshed with bevel gear two on being fixed on rocking handle.Can be implemented under the stopped status by rocking handle and to control machine run.
Compared with prior art, the advantage of this drive gear of sewing machine is: 1. integral layout is reasonable, stress balance, and barycentre steadiness, it is little to take up room.2. by many countershafts are set, not only alleviated the load pressure of main shaft, and can carry out reasonable distribution to each drive disk assembly, according to circumstances determined the quantity of countershaft according to different situations.3. stable drive, noise is little, the operating accuracy height.
Description of drawings
Fig. 1 is the main TV structure schematic diagram of band broken section provided by the invention.
Fig. 2 is the plan structure schematic diagram of band broken section provided by the invention.
Fig. 3 is a side-looking structural representation provided by the invention.
Among the figure, body 1, barrel susceptor 2, main shaft 3, countershaft 4, last axle 5, synchronous belt 6, tooth lifting cam 7, feeding cam 8, dead axle 10, rotating shaft 14, pushing-pulling-rack 16, push rod 17, the bar 18 of cranking arm, locating shaft 19, balancing point cam 21, balancing point connecting rod 22, protect needle cam 23, protect pin connecting rod 24, crankshaft-link rod 25, bent axle 26, drive needle cam 27, needle cam 28 stretches tight, drive pin connecting rod 29, back shaft 30, rocking bar 31, needle bar mechanism 32, balance staff 33, connect handle 34, worm gear 35, oil pump 36, worm screw 37, bevel gear 1; rocking handle 39; bevel gear 2 40; belt pulley 41; joint pin 42; needle shaft 43 stretches tight; feeding connecting rod 44; curved arm rod 45; connecting plate 46; crank 47.
The specific embodiment
As Fig. 1, Fig. 2 and shown in Figure 3, drive gear of sewing machine by body 1, protrude in the outer barrel susceptor 2 of body 1, is arranged on main shaft 3, countershaft 4 on the body 1, goes up composition such as axle 5.In order to cooperate the setting of other mechanism, on body 1, also be provided with parts such as dead axle 10, rotating shaft 14, back shaft 30.
As shown in figures 1 and 3, be provided with a main shaft 3 on body 1, main shaft 3 be arranged in parallel with barrel susceptor 2.At the main shaft 3 other countershafts 4 that are provided with a setting in parallel.Also be provided with above the main shaft 3 one in parallel on axle 5.One end of main shaft 3 is fixed with a belt pulley 41, and motor-driven belt pulley 41 rotates, and rotates thereby drive main shaft 3.Link to each other by synchronous belt 6 between main shaft 3 and the countershaft 4, link to each other by another root synchronous belt 6 between main shaft 3 and the last axle 5.Countershaft 4 and last axle 5 can be realized rotating synchronously under the driving of main shaft 3.
Main shaft 3 is connected with lifts tooth mechanism, feed mechanism; Be connected with on the countershaft 4 and protect the mechanism that seesaws of pin mechanism, looper left-right swinging mechanism, looper; Last axle 5 is connected with stretch tight pin mechanism, needle bar mechanism.When main shaft 3 rotates, each mechanism's co-ordination.
Because transmission mechanism and barrel susceptor 2 be arranged in parallel, have dwindled the size of whole device lateral, reduce space hold; Simplified overall structure, made the barycentre steadiness of whole device.In addition,, can solve the problem that arrangement of parts is too concentrated, be easy for installation and maintenance by countershaft 4 is set.When needs increase or reduce part, can only dismantle the countershaft 4 at this part place, and to other parts without any influence.The quantity of countershaft 4 is provided with as required, and each countershaft 4 be arranged in parallel.Each countershaft 4 can contourly be provided with, also can not contour setting, so that flexible topology makes full use of the space.During not contour the setting can the height interlaced arrangement, also can raise gradually or reduce.
As depicted in figs. 1 and 2, be fixed with tooth lifting cam 7 on the main shaft 3, tooth lifting cam 7 drives the tooth mechanism work of lifting.The above-mentioned tooth mechanism of lifting comprises the linkage that links to each other with tooth lifting cam 7, and the retainer that links to each other with linkage.Main shaft 3 rotates, and drives tooth lifting cam 7 and rotates, and tooth lifting cam 7 drives retainer by linkage and seesaws.
Be fixed with feeding cam 8 on the main shaft 3, feeding cam 8 drives feed mechanism work.Above-mentioned feed mechanism comprises the feeding connecting rod 44 that links to each other with feeding cam 8, and the other end of feeding connecting rod 44 is connected with the curved arm rod 45 of center on dead axle 10.The two ends of connecting plate 46 are connected with crank 47 with curved arm rod 45 respectively, above-mentioned crank 47 is fixed in the rotating shaft 14, also be fixed with feeding crank and differential crank in rotating shaft 14, " link to each other with the feeding retainer, differential crank links to each other with differential retainer by differential connecting rod the feeding crank by the feeding connecting rod.By the rotation of main shaft 3, drive the action of above-mentioned feeding retainer and differential retainer, realize feeding.
Be fixed with balancing point cam 21 on the countershaft 4, balancing point cam 21 drives the work of looper left-right swinging mechanism by balancing point connecting rod 22.Be fixed with on the countershaft 4 and protect needle cam 23, protect needle cam 23 and protect the pin mechanism action by protecting 24 drives of pin connecting rod.Be fixed with bent axle 26 on the countershaft 4, described bent axle 26 drives the loopers mechanism's work that seesaws; The above-mentioned looper mechanism that seesaws comprises the crankshaft-link rod 25 that links to each other with bent axle 26, and crankshaft-link rod 25 links to each other with the bar 18 of cranking arm on being enclosed within locating shaft 19, and the bar 18 of cranking arm links to each other with pushing-pulling-rack 16 by push rod 17.
Above-mentioned balancing point cam 21, protect needle cam 23, bent axle 26 can be arranged on the same countershaft 4, also can be arranged on the different countershaft 4.
Be fixed with on the last axle 5 and drive the needle cam 27 and the needle cam 28 that stretches tight.Drive needle cam 27 and drive pin connecting rod 29 and link to each other, the other end that drives pin connecting rod 29 is hinged with the rocking bar 31 that is enclosed within on the back shaft 30, and rocking bar 31 other ends are hinged with the needle bar mechanism 32 that vertically is provided with.The needle cam 28 that stretches tight links to each other with balance staff 33, and balance staff 33 other ends are fixed with and connect handle 34, connect handle 34 and link to each other with the needle shaft 43 that stretches tight by joint pin 42.
The rotation of last axle 5 makes drives pin connecting rod 29 and moves up and down (ignoring its side-to-side movement), swing on back shaft 30 thereby drive rocking bar 31, realizes that by linkage vertically the needle bar mechanism of setting moves up and down again.Simultaneously, the needle cam 28 that stretches tight drives balance staff 33 actions, and balance staff 33 drives joint pin 42 by connecting handle 34, impels needle shaft 43 swings of stretching tight to realize stretching tight pin swing work by joint pin 42, reduces friction and noise.
Also be provided with worm gear 35 on the main shaft 3, worm gear 35 can be meshed with the worm screw 37 on the oil pump 36.When main shaft rotated, oil pump 36 can effectively reduce operating noise for transmission mechanism provides lubricating oil under the effect of worm gear 35 and worm screw 37, increases work efficiency and precision.
In order under stopped status, to adjust operation, be fixed with bevel gear 1 on the countershaft 4, bevel gear 1 is meshed with bevel gear 2 40 on being fixed on rocking handle 39.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technical staff of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used body 1 morely, barrel susceptor 2, main shaft 3, countershaft 4, last axle 5, synchronous belt 6, tooth lifting cam 7, feeding cam 8, dead axle 10, rotating shaft 14, pushing-pulling-rack 16, push rod 17, the bar 18 of cranking arm, locating shaft 19, balancing point cam 21, balancing point connecting rod 22, protect needle cam 23, protect pin connecting rod 24, crankshaft-link rod 25, bent axle 26, drive needle cam 27, needle cam 28 stretches tight, drive pin connecting rod 29, back shaft 30, rocking bar 31, needle bar mechanism 32, balance staff 33, connect handle 34, worm gear 35, oil pump 36, worm screw 37, bevel gear 1; rocking handle 39; bevel gear 2 40; belt pulley 41; joint pin 42; needle shaft 43 stretches tight; feeding connecting rod 44; curved arm rod 45; connecting plate 46; crank 47 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (7)
1. drive gear of sewing machine, comprise body (1), protrude in the outer barrel susceptor (2) of body (1), on body (1), be provided with a main shaft (3), it is characterized in that, described main shaft (3) be arranged in parallel with barrel susceptor (2), at the other countershaft (4) that is provided with at least one setting in parallel of main shaft (3), also be provided with a upward axle (5) in parallel in the top of main shaft (3), and described countershaft (4) and last axle (5) can rotate under the driving of main shaft (3) synchronously, link to each other by synchronous belt (6) between described main shaft (3) and the countershaft (4), also link to each other between main shaft (3) and the last axle (5) by synchronous belt (6); Side at main shaft (3) is provided with 1～3 countershaft (4), is fixed with tooth lifting cam (7) on the described main shaft (3), and tooth lifting cam (7) drives the tooth mechanism work of lifting; The above-mentioned tooth mechanism of lifting comprises the linkage that links to each other with tooth lifting cam (7), and the retainer that links to each other with linkage, is fixed with feeding cam (8) on the described main shaft (3), and feeding cam (8) drives feed mechanism work; Above-mentioned feed mechanism comprises the feeding connecting rod (44) that links to each other with feeding cam (8), the other end of feeding connecting rod (44) is connected with the curved arm rod (45) of center on dead axle (10), the two ends of connecting plate (46) are connected with crank (47) with curved arm rod (45) respectively, above-mentioned crank (47) is fixed in the rotating shaft (14), in rotating shaft (14), also be fixed with feeding crank and differential crank, the feeding crank links to each other with the feeding retainer by feeding connecting rod (44), and differential crank links to each other with differential retainer by differential connecting rod.
2. drive gear of sewing machine according to claim 1 is characterized in that, is fixed with balancing point cam (21) on the described countershaft (4), and balancing point cam (21) drives the work of looper left-right swinging mechanism by balancing point connecting rod (22).
3. drive gear of sewing machine according to claim 1 is characterized in that, is fixed with on the described countershaft (4) and protects needle cam (23), protects needle cam (23) and protects the pin mechanism action by protecting pin connecting rod (24) drive.
4. drive gear of sewing machine according to claim 1 is characterized in that, is fixed with bent axle (26) on the described countershaft (4), and described bent axle (26) drives the looper mechanism's work that seesaws; The above-mentioned looper mechanism that seesaws comprises the crankshaft-link rod (25) that links to each other with bent axle (26), and crankshaft-link rod (25) links to each other with the bar of cranking arm (18) on being enclosed within locating shaft (19), and the bar of cranking arm (18) links to each other with pushing-pulling-rack (16) by push rod (17).
5. drive gear of sewing machine according to claim 1 is characterized in that, is fixed with on the described upward axle (5) and drives needle cam (27) and the needle cam that stretches tight (28); Drive needle cam (27) and drive pin connecting rod (29) and link to each other, the other end that drives pin connecting rod (29) is hinged with the rocking bar (31) that is enclosed within on the back shaft (30), and rocking bar (31) other end is hinged with the needle bar mechanism that vertically is provided with; The needle cam (28) that stretches tight links to each other with balance staff (33), and balance staff (33) other end is fixed with and connects handle (34), connects handle (34) and links to each other with the needle shaft that stretches tight (43) by joint pin (42).
6. drive gear of sewing machine according to claim 1 is characterized in that, also is provided with a worm gear (35) on the described main shaft (3), and worm gear (35) can be meshed with the worm screw (37) on the oil pump (36).
7. drive gear of sewing machine according to claim 6 is characterized in that, is fixed with bevel gear one (38) on the described countershaft (4), and bevel gear one (38) is meshed with bevel gear two (40) on being fixed on rocking handle (39).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101179692A CN1948587B (en) | 2006-11-03 | 2006-11-03 | Driving mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101179692A CN1948587B (en) | 2006-11-03 | 2006-11-03 | Driving mechanism of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1948587A CN1948587A (en) | 2007-04-18 |
| CN1948587B true CN1948587B (en) | 2011-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101179692A Expired - Fee Related CN1948587B (en) | 2006-11-03 | 2006-11-03 | Driving mechanism of sewing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN1948587B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002825A (en) * | 2010-12-07 | 2011-04-06 | 中捷缝纫机股份有限公司 | Main shaft transmission mechanism of sewing machine |
| CN104452126A (en) * | 2013-09-23 | 2015-03-25 | 苏州巨康缝制机器人有限公司 | Sewing machine spindle and sewing machine with spindle |
| CN103668798A (en) * | 2013-12-19 | 2014-03-26 | 吴江市菀坪宝得利缝制设备机械厂 | Vertical feeding mechanism of sewing machine |
| CN104928860A (en) * | 2015-06-11 | 2015-09-23 | 张文勇 | Chain type sewing machine special for knitted hat |
| CN107023783A (en) * | 2017-05-31 | 2017-08-08 | 中山市风华稀柠照明设计有限公司 | A kind of liftable pendent lamp |
| JP7241113B2 (en) * | 2021-03-10 | 2023-03-16 | 本田技研工業株式会社 | Driving device used for sewing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2088112U (en) * | 1991-01-11 | 1991-11-06 | 郑荣德 | Sack-sewing machine |
| CN2170958Y (en) * | 1993-02-03 | 1994-07-06 | 湖南工业缝纫机厂 | Simple sewing machine with double needle |
| CN2365234Y (en) * | 1999-02-08 | 2000-02-23 | 张宪进 | Needle-feeding and working feeding synchronous linkage mechanism with adjustable linking axle group |
| CN2425101Y (en) * | 2000-05-19 | 2001-03-28 | 何再发 | High-speed industrial sewing machine with cross-tube throat plate seat |
| CN1375592A (en) * | 2001-02-21 | 2002-10-23 | 飞马缝纫机制造株式会社 | Oil-filling device of sewing machine |
| CN2627036Y (en) * | 2003-03-31 | 2004-07-21 | 吴谨明 | Direct drive arrangement for industrial sewing machine |
-
2006
- 2006-11-03 CN CN2006101179692A patent/CN1948587B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2088112U (en) * | 1991-01-11 | 1991-11-06 | 郑荣德 | Sack-sewing machine |
| CN2170958Y (en) * | 1993-02-03 | 1994-07-06 | 湖南工业缝纫机厂 | Simple sewing machine with double needle |
| CN2365234Y (en) * | 1999-02-08 | 2000-02-23 | 张宪进 | Needle-feeding and working feeding synchronous linkage mechanism with adjustable linking axle group |
| CN2425101Y (en) * | 2000-05-19 | 2001-03-28 | 何再发 | High-speed industrial sewing machine with cross-tube throat plate seat |
| CN1375592A (en) * | 2001-02-21 | 2002-10-23 | 飞马缝纫机制造株式会社 | Oil-filling device of sewing machine |
| CN2627036Y (en) * | 2003-03-31 | 2004-07-21 | 吴谨明 | Direct drive arrangement for industrial sewing machine |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2000-245985A 2000.09.12 |
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| CN1948587A (en) | 2007-04-18 |
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Owner name: ZHEJIANG ZOJE SEWING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHONGJIE SEWING MACHINE CO., LTD. Effective date: 20141010 |
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Effective date of registration: 20141010 Address after: 317604 Yuhuan County barley island Subdistrict Office, Zhejiang, Taizhou Patentee after: Zhejiang Zoje Sewing Technology Co., Ltd. Address before: 317604 barley island development zone, Pearl River town, Zhejiang, Yuhuan County Patentee before: Zhongjie Sewing Machine Co., Ltd. |
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Granted publication date: 20110914 Termination date: 20151103 |
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