CN1086754C - Sewing machine with coaxial in-time driven needle bar and upper circumferential sewing mechanism - Google Patents
Sewing machine with coaxial in-time driven needle bar and upper circumferential sewing mechanism Download PDFInfo
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- CN1086754C CN1086754C CN98124967A CN98124967A CN1086754C CN 1086754 C CN1086754 C CN 1086754C CN 98124967 A CN98124967 A CN 98124967A CN 98124967 A CN98124967 A CN 98124967A CN 1086754 C CN1086754 C CN 1086754C
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- needle bar
- upper circular
- sewing
- needle
- circular sewing
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Abstract
The present invention relates to a sewing machine with a coaxially timing driven needle bar and an upper circumferential sewing mechanism, which is provided with a cantilever. A motive power main shaft at the bottom of the sewing machine drives a needle bar drive connecting rod and a needle bar drive block to make a needle bar transmission shaft rotate, the other end of the needle bar transmission shaft is provided with a needle bar drive block driving the needle bar to move up and down, the upper circumferential sewing transmission mechanism is provided with an upper circumferential sewing hook which fits the movement of the needle bar, and the motive power input member of the upper circumferential sewing transmission mechanism is arranged on the transmission shaft of the needle bar, and thus, the upper circumferential sewing hook and the needle bar can be linked by the needle bar drive connecting rod, the action timing of the upper circumferential sewing hook of the upper circumferential sewing mechanism is completely consistent with the action timing of the needle bar, the structure can be simplified, and the sewing quality can be improved.
Description
The present invention relates to a kind of Sewing machines, particularly a kind of coaxial timing drives the Sewing machines of needle bar and upper circular sewing mechanism.
Present Sewing machines has at the structural form of making the circumferential weld line, its Sewing machines structure, please cooperate and consult Fig. 7, shown in 8, its Sewing machines 10 has a cantilever 11, and establish power spindle 12 to drive relevant structure in Sewing machines 10 bottoms, comprise: needle bar transmission mechanism 20, its needle bar transmission mechanism 20 be by power spindle 12 through needle rod driving connecting rod 21 interlock needle rod driving blocks 22 to drive needle bar trace 26, needle bar trace 26 central authorities are that cantilever 11 interior fulcrums 260 are fixed, cantilever 11 holds needle rod drive block 24 directly to drive on the needle bar 25 in addition, move down, and upper circular sewing drive mechanism 40 include one with the eccentric wheel 13 of power spindle 12 stoppers to drive a connecting rod 41, the end in addition of connecting rod 41 articulates and drives in this swing arm 42 with a swing arm 42, lower swing, swing arm 42 end in addition is located on the power transmission shaft 43, and the end in addition of its power transmission shaft 43 is provided with a swing arm 44, the end in addition of swing arm 44 is through a connecting rod 45 starts one upper circular sewing hook axle 46, make upper circular sewing hook axle 46 be formed rotation, and connect a upper circular sewing hook 47 in upper circular sewing hook axle 46 bottoms, make its upper circular sewing hook 47 be done back and forth rotation, driving the line body cooperates with car pin on the needle bar 25, as shown in Figure 8, can sew line body 50 structures of circumferential weld on it.
Structure so, the action transmission force of its needle bar 25 swings is to be gone out by power spindle 12 transmissions, and the transmission of the power of upper circular sewing drive mechanism 40 is also gone out by power spindle 12 transmissions, so forms the transmission system of two groups of independences, when action, very easily produce following disappearance.Such as:
1, the complicated absolute accurate timing adjustment of transmission mechanism is difficult for: the system of upper circular sewing drive mechanism 40 and whole needle bar 25 transmissions, interoperation completely, can guarantee that the 50 action timings of suture line body just arrive on its position that should arrive, staggered cooperate certain with not collinear body 50, otherwise will cause 50 off-lines of line body, integral body is made dysplasia, therefore the timing of its two mechanism cooperates requirement, must be very precisely, only this some is but independent separately because of two groups of mechanisms, and the driving member complexity, and cause the consuming time and difficult of assembling and adjustment.
2, the complicated integral structure manufacturing cost is high: its two big transmission system mechanism driving complexity, cause the complexity on Sewing machines 10 overall structures, especially in the very narrow and small cantilever 11 in space and on the power spindle 12, all cause the difficulty that one-piece parts is made, the member assembling is last, make whole manufacturing cost high, more improve the difficulty and relevant cost that maintenance is gone up.
The object of the present invention is to provide a kind of coaxial timing to drive the Sewing machines of needle bar and upper circular sewing mechanism, it is directly to be provided with upper circular sewing drive mechanism power input component in the needle bar power transmission shaft, upper circular sewing hook can be directly driven by the power of needle bar power transmission shaft input, become coaxial timing transmission with the driving that cooperates needle bar, to simplify the mechanism of Sewing machines inside, reduce and make maintenance cost.
Technical scheme of the present invention is:
A kind of coaxial timing drives the Sewing machines of needle bar and upper circular sewing mechanism, this Sewing machines has cantilever, the power spindle of Sewing machines bottom drives needle rod driving connecting rod and needle rod driving block so that the revolution of needle bar power transmission shaft through eccentric wheel, and other end of needle bar power transmission shaft is provided with upper and lower the moving of needle rod drive block drive needle bar, and upper circular sewing drive mechanism has the start of upper circular sewing hook cooperation needle bar, it is characterized in that:
The power input component of this upper circular sewing drive mechanism is located on the needle bar power transmission shaft, makes upper circular sewing hook and needle bar be all needle rod driving connecting rod institute interlock.
Described coaxial timing drives the Sewing machines of needle bar and upper circular sewing mechanism, and it is characterized in that: this upper circular sewing drive mechanism has the active conversioning wheel of being located on the needle bar power transmission shaft, and this active conversioning wheel meshes a driven conversioning wheel.
Described coaxial timing drives the Sewing machines of needle bar and upper circular sewing mechanism, it is characterized in that, driven conversioning wheel center is that a transaxle passes and secure bond with it, transaxle end in addition closes interlock in conjunction with a main swing component through connecting rod and secondary swing component pivot, and secondary swing component is in conjunction with driving the upper circular sewing hook axle, upper circular sewing hook beam warp one conjunction cooperation gim peg and upper circular sewing hook secure bond.
Described coaxial timing drives the Sewing machines of needle bar and upper circular sewing mechanism, it is characterized in that: this active conversioning wheel has and the fixing fixed part of needle bar power transmission shaft, end is provided with the gear part of bevel gear shape in addition, the end face of the driven relatively conversioning wheel of gear part is provided with the engaging piece of profile of tooth, and this engaging piece is meshed with driven conversioning wheel.
Described coaxial timing drives the Sewing machines of needle bar and upper circular sewing mechanism, it is characterized in that: this driven conversioning wheel one end is provided with for transaxle and passes fixing fixed part, and end stretches out fan-shaped extension to active conversioning wheel direction in addition, and establish engaging piece in relative active conversioning wheel engaging piece place, to be meshed with active conversioning wheel engaging piece.
Described coaxial timing drives the Sewing machines of needle bar and upper circular sewing mechanism, it is characterized in that: the relative transaxle of main swing component end is provided with a fixed part and gives in conjunction with fixing, and it holds the setting axial region in addition, can fix for pivot, makes the pivot bottom stretch out the hinge portion end that penetrates connecting rod.
Described coaxial timing drives the Sewing machines of needle bar and upper circular sewing mechanism, it is characterized in that: connecting rod in addition end is provided with a hinge portion in addition and covers pivot for a pivot that is fixed in secondary swing component dead axle portion and close, and the in addition end of secondary swing component is provided with in addition and necessarily colludes axial region, pass and fix with a upper circular sewing hook axle, the upper circular sewing hook axle is rotated with secondary swing component swing, the hinge portion of axle bed is passed at upper circular sewing hook axle both ends respectively, and upper circular sewing hook axle bottom is with the fixing upper circular sewing hook of conjunction, and its axle bed top is established the junction surface by the hinge portion to the cantilever side, engages with junction surface, joint seat in cantilever bottom.
Described coaxial timing drives the Sewing machines of needle bar and upper circular sewing mechanism, it is characterized in that: the needle rod driving connecting rod of this needle bar transmission mechanism is after eccentric wheel drives, the needle rod driving block pivot of top interlock is placed on the needle bar power transmission shaft, and the needle bar power transmission shaft be set as maintain static moving, the power input component pivot of upper circular sewing drive mechanism is placed on the needle bar power transmission shaft, this power input component and needle rod driving block block mutually and end and be integral, and the end in addition of this power input component blocks mutually with needle rod drive block and ends.
Described coaxial timing drives the Sewing machines of needle bar and upper circular sewing mechanism, it is characterized in that: the power input component of this upper circular sewing drive mechanism is initiatively conversioning wheel, this active conversioning wheel pivot is placed on the needle bar power transmission shaft, initiatively conversioning wheel only blocks mutually with needle rod driving block and is integral, the end in addition and the needle rod drive block of active conversioning wheel only block mutually, make needle rod driving block, active conversioning wheel, needle rod drive block three members form one.
Effect of the present invention is:
1, two groups of transmission systems use coaxial power drive to reach mechanism's timing synchronously and improve the sewing quality: needle bar power transmission shaft 23 coaxial drive upper circular sewing drive mechanisms 30 also see through needle rod drive block 24 start needle bars 25, both power inputs are to belong to homology, and after can making coaxial output action, through minimum member, can make needle bar 25 and upper circular sewing hook 372 synchronous timing starts, need not any adjustment, the quality of suture and efficient are significantly improved, more meet requirement economically.
2, it is easy to maintenance that whole transmission mechanism is simplified reduction manufacturing cost raising assembling quality: it is to be to draw on the needle bar power transmission shaft 23 power to keep supplying circular sewing drive mechanism 30 uses, need not to be provided with the driving mechanism of another group complexity, more shape is simple to make the transmission system of integral body, assembling is more prone to adjustment, whole manufacturing cost more can reduce, relative maintenance is more convenient, and quality more can be guaranteed.
For further understanding the present invention's architectural feature and purpose thereof, now with as the preferred embodiment of back attached with graphic detailed description as afterwards:
Fig. 1 is the present invention's three-dimensional appearance schematic diagram.
Fig. 2 is circular sewing drive mechanism system decomposition figure on the present invention.
Fig. 3 is circular sewing drive mechanism front elevational schematic on the present invention.
Fig. 4 amplifies schematic perspective view for circular sewing drive mechanism on the present invention is local.
Fig. 5 is circular sewing drive mechanism schematic top plan view on the present invention.
Fig. 6 overlooks the action schematic diagram for circular sewing drive mechanism on the present invention.
Fig. 7 analyses and observe schematic perspective view for known Sewing machines structure partial.
Fig. 8 makes the suture schematic diagram of moulding for known Sewing machines upper circular sewing drive mechanism cooperates needle bar.
Please cooperate and consult shown in Figure 1ly, the present invention's main design is fit structure and the overall structure form that is upper circular sewing drive mechanism 30 power inputs, and a brand-new kind of drive is provided.
The present invention's Sewing machines 10 basic structures are suitable with known Sewing machines, it has a cantilever 11, and power spindle 12 revolutions of passing through Sewing machines 10 pedestal part drive needle bar transmission mechanisms 20 through eccentric wheel 13, eccentric wheel 13 drives the needle rod driving connecting rod 21 interlock needle rod driving blocks 22 of needle bar transmission mechanism 20 so that needle bar power transmission shaft 23 is able to back and forth rotation in the angle of limit, and needle bar power transmission shaft 23 other ends are provided with on the needle rod drive block 24 drive needle bars 25, move down, and the present invention's design focal point is that promptly the power input of upper circular sewing drive mechanism 30 is by needle bar power transmission shaft 23 for it, make the mechanism of upper circular sewing drive mechanism 30 drives can be really and the action of needle bar 25 synchronous.
The structure of circular sewing drive mechanism 30 on the present invention, please cooperate and consult Fig. 2,3,4, shown in 5, its mainly have one with the power input component of needle bar power transmission shaft 23 coaxial fixedly drives, so that power can be really by the needle bar power transmission shaft 23 coaxial outputs that drive needle bar 25, to reach the form of timing driving, and its power input component is according to each embodiment of this case, it is the active conversioning wheel of being located on the needle bar power transmission shaft 23 for one 31, to mesh a driven conversioning wheel 32, the motion of reciprocating rotating on the needle bar power transmission shaft 23 is converted to the transaxle 330 reciprocating rotatings motion at driven conversioning wheel 32 centers, and transaxle 330 is to be positioned to change on the pedestal 33, and the bottom of transaxle 330 is stretched out cantilever 11 bottoms and is closed interlock in conjunction with a main swing component 34 through connecting rod 35 and secondary swing component 36 pivots, and the heart drives a upper circular sewing hook axle 37 among the secondary swing component 36, and upper circular sewing hook axle 37 cooperates gim peg 370 to combine interlock with upper circular sewing hook 372 through a conjunction 371, and its upper circular sewing hook axle 37 is positioned on the axle bed 38,38 of the axle beds joint seat 39 interior with being fixed in cantilever 11 is combined into one, by overall structure can be certain quote the input of same needle bar power transmission shaft 23 power, make needle bar 25 and upper circular sewing hook 372 interoperation really, and make mass motion cooperate really, simple in structure, cost reduces.
And wherein, initiatively conversioning wheel 31 has the fixed part 310 fixing with needle bar power transmission shaft 23, to cooperate gim peg 311 and needle bar power transmission shaft 23 to be combined into one, and it holds the gear part 312 that is provided with the bevel gear shape in addition, the end face of the driven relatively conversioning wheel 32 of gear part 312 is provided with the engaging piece 313 of profile of tooth, to be meshed with driven conversioning wheel 32.
And driven conversioning wheel 32 1 ends are provided with for transaxle 330 and pass and fasten fixed fixed part 320 with gim peg 321 spiral shells, and end stretches out fan-shaped extension 322 to active conversioning wheel 31 directions in addition, and cooperate in relative active conversioning wheel 31 engaging pieces 313 places and to establish engaging piece 323, to reach the initiatively transmission of conversioning wheel 31 and driven conversioning wheel 32 power.
Aforementioned main swing component 34 relative transaxles 330 ends are provided with the fixed part 340 of one one-tenth C shape opening shape, it cooperates gim peg 341 screw locks to give in conjunction with fixing, and it holds setting axial region 342 in addition, it can cooperate a gim peg 343 spiral shells to establish, be through at the pivot 344 of dead axle portion 342 with fixed cover, hinge portion 350 ends that pivot 344 bottoms stretched out penetrate connecting rod 35.
Connecting rod 35 end in addition is provided with a hinge portion 350 in addition and is fixed in secondary swing component 36 dead axle portions 360 for one and cooperates the pivot 362 of gim pegs 361 lockings to cover pivot to close, and the in addition end of secondary swing component 36 is provided with in addition and necessarily colludes axial region 363, it is fixed to pass and fasten with gim peg 364 spiral shells in order to a upper circular sewing hook axle 37, and upper circular sewing hook axle 37 can be rotated with secondary swing component 36 swings.
And the hinge portion 380 of axle bed 38 is passed at upper circular sewing hook axle 37 both ends respectively, upper circular sewing hook axle 37 bottoms cooperate the fixed component 371 of gim peg 370 spiral shells, conjunction 371 bottoms are again with the solid upper circular sewing hook 372 of gim peg 370 spiral shells, and its axle bed 38 tops are established junction surface 381 by hinge portion 380 to cantilever 11 sides, and other engages bolt 391 and the cantilever 11 interior junction surfaces, joint seat 39 bottom 390 that are connected.
The process of action, please cooperate and consult Fig. 5, shown in Figure 6, directly rotate active conversioning wheel 31 and to transaxle 330, do the revolution action through driven conversioning wheel 32 power conversion with needle bar power transmission shaft 23, and the main swing of swing does 34,36 interlocks are made in connecting rod 35 and secondary swing, upper circular sewing hook axle 37 is rotated, with start upper circular sewing hook 372, and its, initial actuating promptly as shown in Figure 5, rotate and the driven conversioning wheel 32 of engagement start through active conversioning wheel 31, transaxle 330 is able to through main swing component 34, connecting rod 35, secondary swing component 36 drives upper circular sewing hook axle 37 and upper circular sewing hook 372, end to stroke, as shown in Figure 6, just can make the action of upper circular sewing hook 372 backguys cooperation needle bar 25, to form suture 50 forms as shown in Figure 8.
The present invention's structure mainly is to quote and drive the power of needle bar transmission mechanism 20 same power sources in addition, in the hope of needle bar transmission mechanism 20 and upper circular sewing drive mechanism 30 synchronous starts, except that structure that can be above-mentioned reaches the purpose of synchronous start really, example that more can difference for it, promptly the needle rod driving connecting rod 21 as needle bar transmission mechanism 20 is after eccentric wheel 13 drives, the needle rod driving block 22 of its top interlock is that pivot is placed on the needle bar power transmission shaft 23, and needle bar power transmission shaft 23 can be set as maintain static moving, and the power input component of upper circular sewing drive mechanism 30 initiatively conversioning wheel 31 also pivot be placed on the needle bar power transmission shaft 23, initiatively conversioning wheel 31 can only block mutually with needle rod driving block 22, and also only block mutually with needle rod drive block 24 in the end in addition of active conversioning wheel 31, make needle rod driving block 22, active conversioning wheel 31, needle rod drive block 24 3 members block mutually and only form one and drive, one interlock via needle rod driving connecting rod 21, can simultaneously power be reached needle rod drive block 24, the driven conversioning wheel 32 that cooperates with active conversioning wheel 31 in needle bar 25 and the upper circular sewing drive mechanism 30 makes needle bar transmission mechanism 20 and upper circular sewing drive mechanism 30 reach synchronous start really.
Claims (9)
1, a kind of coaxial timing drives the Sewing machines of needle bar and upper circular sewing mechanism, this Sewing machines has cantilever, the power spindle of Sewing machines bottom drives needle rod driving connecting rod and needle rod driving block so that the revolution of needle bar power transmission shaft through eccentric wheel, and other end of needle bar power transmission shaft is provided with upper and lower the moving of needle rod drive block drive needle bar, and upper circular sewing drive mechanism has the start of upper circular sewing hook cooperation needle bar, it is characterized in that:
The power input component of this upper circular sewing drive mechanism is located on the needle bar power transmission shaft, makes upper circular sewing hook and needle bar be all needle rod driving connecting rod institute interlock.
2, coaxial timing as claimed in claim 1 drives the Sewing machines of needle bar and upper circular sewing mechanism, and it is characterized in that: this upper circular sewing drive mechanism has the active conversioning wheel of being located on the needle bar power transmission shaft, and this active conversioning wheel meshes a driven conversioning wheel.
3, coaxial timing as claimed in claim 2 drives the Sewing machines of needle bar and upper circular sewing mechanism, it is characterized in that; Driven conversioning wheel center is that a transaxle passes and secure bond with it, transaxle end in addition closes interlock in conjunction with a main swing component through connecting rod and secondary swing component pivot, and secondary swing component is in conjunction with driving the upper circular sewing hook axle, upper circular sewing hook beam warp one conjunction cooperation gim peg and upper circular sewing hook secure bond.
4, coaxial timing as claimed in claim 2 drives the Sewing machines of needle bar and upper circular sewing mechanism, it is characterized in that: this active conversioning wheel has and the fixing fixed part of needle bar power transmission shaft, end is provided with the gear part of bevel gear shape in addition, the end face of the driven relatively conversioning wheel of gear part is provided with the engaging piece of profile of tooth, and this engaging piece is meshed with driven conversioning wheel.
5, drive the Sewing machines of needle bars and upper circular sewing mechanism as claim 1 or 2 or 4 described coaxial timings, it is characterized in that: this driven conversioning wheel one end is provided with for transaxle and passes fixing fixed part, and end stretches out fan-shaped extension to active conversioning wheel direction in addition, and establish engaging piece in relative active conversioning wheel engaging piece place, to be meshed with active conversioning wheel engaging piece.
6, coaxial timing as claimed in claim 3 drives the Sewing machines of needle bar and upper circular sewing mechanism, it is characterized in that: the relative transaxle of main swing component end is provided with a fixed part and gives in conjunction with fixing, and it holds the setting axial region in addition, can fix for pivot, make the pivot bottom stretch out the hinge portion end that penetrates connecting rod.
7, coaxial timing as claimed in claim 3 drives the Sewing machines of needle bar and upper circular sewing mechanism, it is characterized in that: connecting rod in addition end is provided with a hinge portion in addition and covers pivot for a pivot that is fixed in secondary swing component dead axle portion and close, and the in addition end of secondary swing component is provided with in addition and necessarily colludes axial region, pass and fix with a upper circular sewing hook axle, the upper circular sewing hook axle is rotated with secondary swing component swing, the hinge portion of axle bed is passed at upper circular sewing hook axle both ends respectively, and upper circular sewing hook axle bottom is with the fixing upper circular sewing hook of conjunction, and its axle bed top is established the junction surface by the hinge portion to the cantilever side, engages with junction surface, joint seat in cantilever bottom.
8, coaxial timing as claimed in claim 1 drives the Sewing machines of needle bar and upper circular sewing mechanism, it is characterized in that: the needle rod driving connecting rod of this needle bar transmission mechanism is after eccentric wheel drives, the needle rod driving block pivot of top interlock is placed on the needle bar power transmission shaft, and the needle bar power transmission shaft be set as maintain static moving, the power input component pivot of upper circular sewing drive mechanism is placed on the needle bar power transmission shaft, this power input component and needle rod driving block block mutually and end and be integral, and the end in addition of this power input component blocks mutually with needle rod drive block and ends.
9, coaxial timing as claimed in claim 8 drives the Sewing machines of needle bar and upper circular sewing mechanism, it is characterized in that: the power input component of this upper circular sewing drive mechanism is initiatively conversioning wheel, this active conversioning wheel pivot is placed on the needle bar power transmission shaft, initiatively conversioning wheel only blocks mutually with needle rod driving block and is integral, the end in addition and the needle rod drive block of active conversioning wheel only block mutually, make needle rod driving block, active conversioning wheel, needle rod drive block three members form one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98124967A CN1086754C (en) | 1998-11-25 | 1998-11-25 | Sewing machine with coaxial in-time driven needle bar and upper circumferential sewing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98124967A CN1086754C (en) | 1998-11-25 | 1998-11-25 | Sewing machine with coaxial in-time driven needle bar and upper circumferential sewing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1254774A CN1254774A (en) | 2000-05-31 |
| CN1086754C true CN1086754C (en) | 2002-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98124967A Expired - Fee Related CN1086754C (en) | 1998-11-25 | 1998-11-25 | Sewing machine with coaxial in-time driven needle bar and upper circumferential sewing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1086754C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383420C (en) * | 2004-05-28 | 2008-04-23 | 大和缝纫机制造株式会社 | Sealing structure |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5050880B2 (en) * | 2007-03-22 | 2012-10-17 | アイシン精機株式会社 | Sewing hook timing adjustment device |
| US8316785B2 (en) * | 2009-08-05 | 2012-11-27 | Faurecia Automotive Seating, Llc | Flat seam construction for automotive upholstery |
| CN103572516B (en) * | 2012-08-09 | 2015-07-29 | 曾贤长 | Sewing machines upper circular sewing hook drives structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2411017Y (en) * | 2000-03-15 | 2000-12-20 | 刘余厚 | Laser acupuncture needle |
-
1998
- 1998-11-25 CN CN98124967A patent/CN1086754C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2411017Y (en) * | 2000-03-15 | 2000-12-20 | 刘余厚 | Laser acupuncture needle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383420C (en) * | 2004-05-28 | 2008-04-23 | 大和缝纫机制造株式会社 | Sealing structure |
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| Publication number | Publication date |
|---|---|
| CN1254774A (en) | 2000-05-31 |
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Granted publication date: 20020626 Termination date: 20171125 |