WO2002090042A1 - Procede pour assembler un thermostat - Google Patents

Procede pour assembler un thermostat Download PDF

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Publication number
WO2002090042A1
WO2002090042A1 PCT/JP2002/003515 JP0203515W WO02090042A1 WO 2002090042 A1 WO2002090042 A1 WO 2002090042A1 JP 0203515 W JP0203515 W JP 0203515W WO 02090042 A1 WO02090042 A1 WO 02090042A1
Authority
WO
WIPO (PCT)
Prior art keywords
thermostat
retaining ring
shaped retaining
wax
case
Prior art date
Application number
PCT/JP2002/003515
Other languages
English (en)
Japanese (ja)
Inventor
Shinichi Sudo
Original Assignee
Nippon Thermostat Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Thermostat Co., Ltd. filed Critical Nippon Thermostat Co., Ltd.
Publication of WO2002090042A1 publication Critical patent/WO2002090042A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts

Definitions

  • the present invention relates to a thermostat used for cooling an internal combustion engine of an automobile or the like, and more particularly to a method of assembling a thermostat in which a valve slides in the body to control a flow of a coolant.
  • the thermostat 100 is formed integrally with a hollow cylindrical valve body 101, a thermo valve 102, which is housed in sliding contact with a hollow portion of the valve body 101, and a valve body 101. Formed at the other end of the valve body 101, and a joint cover 104 fitted to the other end of the valve body 101, and a thermo valve 1.
  • the coil spring 105 is a biasing member that applies a biasing force to the coil 02.
  • the thermovalve 102 is an element 111 composed of a piston 106 that moves forward and backward due to the expansion of the wax, a rubber piston 107, and a guide part 108 that guides the piston 106 to move forward and backward. And a wax case 111 provided on the bottom side of the element 110 and containing the wax 112 of the temperature-sensitive part.
  • the thermostat 100 If the coolant temperature is low, the thermostat 100 The wax 1 1 2 filled therein is shrunk. At this time, the thermo valve 102 is constantly urged upward by the coil spring 105. For this reason, the element 110 becomes the valve body 120, which keeps the inlet opening 116 and the outlet opening 117 closed so as to cut off the communication of the liquid. At this time, since the bypass outlet portion 119 is open, the coolant flows through the bypass inlet portion 118 provided in the C-washer and the bypass outlet portion 119.
  • the valve body 120 of the element 110 opens the inlet opening 116 and the outlet opening 117 of the valve body in the closed state.
  • the bypass outlet portion 119 is open, but the descending element 110 force descending bypass outlet portion 119 is closed and the outlet opening portion 117 is opened.
  • the flow of the coolant from the bypass inlet 118 is shut off, and the flow of the coolant is switched and controlled so that the inlet 116 and the outlet 117 communicate with each other.
  • the assembly of the thermostat 100 is performed as follows.
  • the wax case 111 is filled with wax 115 as a temperature-sensitive member and turned over, and the piston 106, the wrapper piston 107, and the back-up plate are placed in the guide portion 108. Insert and fill the semi-fluid 1 1 3 and create a guide assembly sealed with the diaphragm 1 1 4 and fix the box case 1 1 1 and the guide section 108 by pressing with a press etc., and fix the piston Into the element assembly (element 110).
  • the element 110 is inserted into the valve body 101 from above, and the coil spring 105 is further inserted.
  • the coil spring 105 is compressed so that it does not protrude from the valve body 101, and the C-washer 115 is inserted into a washer groove 101 formed in the inner wall of the valve body 101. Fit the joint cover 104 onto the valve body 101. , — ⁇
  • the O-ring 116 is fitted into the O-ring groove formed in the joint cover 104 and the projection 103, and the thermostat 100 is completed. Further, as shown in FIG. 11, an inspection is performed to determine whether the completed thermostat 100 has a predetermined performance. In this inspection method, a worker puts the thermostat 100 in an electric furnace or the like and heats the thermostat 100 to a predetermined temperature (90 ° C.), the wax of the expanding body expands, and the piston moves to a predetermined stroke. It was only confirmed visually.
  • the lift inspection of the element is performed in warm water, the thermostat 100 assembled to the thermostat is heated to a predetermined temperature in an electric furnace, etc., and the door is opened.
  • the inspection process since the lift as a completed thermostat is performed visually, the inspection process must be performed twice before completion, or there is a problem with the accuracy of the inspection, and the valve opening state cannot be confirmed accurately. There was also.
  • the thermostat 100 is replaced by opening the door every time, the internal temperature will decrease and it will take time to raise the temperature to the predetermined temperature again, resulting in poor efficiency.
  • the present invention has been made in view of the above-mentioned conventional problems, and aims to improve the working efficiency of a thermostat assembling process, perform a safe operation, and improve the efficiency in an inspection process. It is intended to provide a method for assembling a thermostat capable of improving the accuracy of inspection by using a thermostat.
  • the present invention provides a wax case process for incorporating wax into a wax case, a case guide assembly process for incorporating a piston in a guide portion, and an element assembly for fixing the box case and the guide portion to form an element. Inserting the element into the valve body, installing a spring and a C-shaped retaining ring to complete the thermostat, C-retaining ring mounting process, and automatically inspecting the completed thermostat for non-defective and defective products And an inspection step of sorting.
  • the C-shaped retaining ring mounting step includes: a C-shaped retaining ring aligning means having a parts feeder for aligning the C-shaped retaining ring; and a pair of holders opened and closed by a cylinder to grip or release the C-shaped retaining ring.
  • a C-shaped retaining ring opening / closing mechanism, a C-shaped retaining ring inserting means comprising: a vertical moving mechanism for inserting the C-shaped retaining ring gripped by the holder by a vertical moving cylinder into the work body; It is characterized by comprising a conveying means having a pick and press unit for moving the valve body in which the retaining ring is inserted, and a force.
  • a charging means for automatically charging the thermostat into the hot water tank; a hot water tank for heating the thermostat to a predetermined temperature; An index table that rotates and moves at a speed, a measurement unit that measures an open state of the thermostat that has reached the predetermined temperature, and a discharge unit that discharges the measured thermostat. Non-defective products and defective products are automatically sorted and discharged according to the cut measurement results.
  • FIG. 1 is a process chart showing a method for assembling a thermostat according to the present invention.
  • FIG. 2 is an explanatory view showing each step of a method for assembling the thermostat of FIG.
  • FIG. 3 is an explanatory diagram showing an element assembling step of the method of assembling the thermostat in FIG.
  • FIG. 4 is a plan view showing a thermostat C-shaped stopper mounting device.
  • FIG. 5 is a front view showing a C-shaped snap ring mounting device of a thermostat.
  • FIG. 6 is an explanatory view showing a procedure for inserting a C-shaped retaining ring of a thermostat.
  • FIG. 7 is a plan view showing a thermostat inspection device.
  • FIG. 8 is a sectional view showing a measurement state of a thermostat in the inspection device of FIG.
  • FIG. 9 is a sectional view showing a conventional thermostat.
  • FIG. 10 is a process diagram showing the assembly of a conventional thermostat.
  • FIG. 11 is an explanatory diagram showing a conventional thermostat inspection method.
  • FIG. 1 is a process chart showing a method of assembling the thermostat of the present invention
  • FIG. 2 is an explanatory view showing each step of the method of assembling the thermostat of FIG. 1
  • FIG. 3 is a set of the thermostat of FIG. Explanatory drawing showing the element assembly process of the erecting method
  • FIG. 4 is a plan view showing a C-type retaining ring mounting device
  • FIG. 5 is a front view showing a C-type retaining ring mounting device
  • FIG. 6 is a C-type retaining device
  • FIG. 7 is a plan view showing a thermostat inspection device
  • FIG. 8 is a cross-sectional view showing a measurement state of the thermostat in the inspection device of FIG.
  • FIG. 1 shows the steps of a method for assembling a thermostat according to the present invention, a box case step S1 for incorporating a box in a wax case, a case guide assembly step S2 for incorporating a biston in a case guide, and the wax case.
  • An element assembling step S3 in which the element and the case guide are fixed to each other, and the element is inserted into the pulp body and a spring and a C-shaped retaining ring are attached to complete a thermostat. 4
  • an inspection process S5 for automatically inspecting the completed thermostat to sort non-defective products and non-defective products, and power.
  • FIG. 2 shows a case process S1, a case guide process S2, and an element assembly process S3.
  • the wax case 111 is filled with the wax 111 of the temperature-sensitive member and is inverted.
  • the case guide step S2 as shown in FIGS. 2 (d) to 2 (g)
  • the rubber biston 107 and the backup plate are inserted into the guide portion 108, and the half fluid body 1 is inserted. Fill 13 and seal with diaphragm 1 14.
  • the element assembly process S3 as shown in FIG. 1 1 1 and the wax case 1 1 1 are fitted to form a case guide assembly.
  • the wax case 111 is fixed to the guide portion 108 by pressing with a press or the like.
  • the lower surface of the wax case 111 is pushed by the adjusting rod so that the amount of projection of the piston 107 becomes a predetermined value, and the stroke is adjusted.
  • the element is a finished product of 110.
  • the piston 106 is inserted into the element 110, inverted, and incorporated into the valve body 101.
  • the coil spring 105 is fixed in the above state, the coil spring 105 is inserted into the valve body 101 from above, and the coil spring 105 is compressed.
  • fit the C-shaped retaining ring 115 into the ring groove 101 formed in the inner wall of the valve body 101, and join the joint cover 100. 4 is fitted to the valve body 101.
  • FIG. 4 shows an arrangement of an assembling apparatus used in a C-shaped snap ring mounting step S3 of the thermostat 100 according to the present invention.
  • the thermostat assembling apparatus is arranged on a flat plate-shaped table T, and has C-shaped retaining ring aligning means 1 for aligning and sequentially feeding the C-shaped retaining rings 115, and the aligned C-shaped retaining ring.
  • a C-shaped retaining ring insertion means 10 for taking out the retaining ring 1 15 and inserting it into the main body of the work, and a conveying means 30 for moving the work body into which the C-shaped retaining ring 1 15 is inserted. It has.
  • the C-shaped retaining ring aligning means 1 applies vibration to the C-shaped retaining rings 115 to align them in one direction, and is generally called a perfeeder and is commercially available.
  • the C-shaped retaining ring alignment means 1 includes a bucket 2 having a substantially circular planar shape and a track formed in a spiral shape on the inner peripheral wall thereof, a chute 3 serving as a port for aligning and taking out parts from the bucket 2, and a packet. And a vibration generator 4 provided at the lower part of the device 2.
  • the vibration generator 4 is provided with an electromagnet (not shown). When an alternating current is applied to the electromagnet, an alternating magnetic attraction force is generated between the electromagnet and a movable core (not shown) attached to the bottom of the bucket 2.
  • the bucket 2 performs torsional vibration.
  • the C-shaped retaining ring insertion means 10 has a pair of The C-shaped retaining ring opening / closing mechanism 11 that holds and releases the C-shaped retaining ring 1 15 by opening and closing the screw, and the C-shaped retaining ring opening / closing mechanism 11 that holds the C-shaped retaining ring 1 15
  • a vertical movement mechanism 20 inserted into the work body by a moving cylinder, and a moving arm 25 for moving the C-shaped retaining ring insertion means 10 to the position of the C-shaped retaining ring aligning means 1.
  • the C-shaped retaining ring opening / closing mechanism 11 of the C-shaped retaining ring insertion means 10 is provided with an upper holder 13 driven by an upper cylinder 12 and a lower driven by a lower cylinder 14.
  • a pair of upper holders 13 and lower holders 15 are pivotally supported by support pins 18.
  • Pins 16 and 17 are attached to the front ends of the upper holder 13 and the lower holder 15 in order to hook the C-shaped retaining ring 115. These pins 16 and 17 are inserted into the pin holes 1 15a and 1 15b of the C-shaped retaining ring 115 shown in Fig. 6, and open and close the C-shaped retaining ring 1 15. is there.
  • the vertical movement mechanism 20 includes a vertical movement cylinder 21 for vertically moving the C-shaped retaining ring opening / closing mechanism 11, a bracket 22 for mounting the C-shaped retaining ring opening / closing mechanism 1 1, and a spring 10 at the tip. 5 (see Fig. 6) is provided with a pressure block 23 that moves the C-type snap ring opening / closing mechanism 11 up and down and a spring inserted into the valve body 1 1 1 of the thermostat 100 105 can be pressed.
  • FIG. 4 a procedure for inserting the C-shaped retaining ring 1 15 into the work body by the C-shaped retaining ring insertion means 10 will be described with reference to FIGS. 4 to 6.
  • FIG. 4 a procedure for inserting the C-shaped retaining ring 1 15 into the work body by the C-shaped retaining ring insertion means 10 will be described with reference to FIGS. 4 to 6.
  • FIG. 4 a procedure for inserting the C-shaped retaining ring 1 15 into the work body by the C-shaped retaining ring insertion means 10 will be described with reference to FIGS. 4 to 6.
  • the thermostat 110 with the spring 105 inserted into the valve body 101 at the working position of the table T is set on the set jig 31 (see FIG. 5). It is conveyed from the previous process in a state where it has been set.
  • the C-shaped retaining ring insertion means 10 is
  • the joint cover 104 is fitted as shown in Fig. 10 (b), and the thermostat 100 is assembled. You. Then, the thermostat 100 is transferred to the next inspection step S by the transport means 30.
  • This transport means 30 As shown in FIG.
  • the same pick and press cut (P ⁇ P) as the C-type snap ring insertion means 100 is used.
  • the thermostat 100 is grasped by the grasping part using hydraulic pressure, and the thermostat is grasped by the arm.
  • the thermostat 100 is moved to a predetermined position, and the thermostat 100 is released from the grip portion at the predetermined position.
  • the C-shaped retaining ring aligning means 1 and the C-shaped retaining ring ⁇ It is equipped with 10 and transport means 30 and automatically inserts a C-shaped retaining ring, so that the operator is free from the trouble of inserting the C-shaped retaining ring and can work safely. This improves the efficiency of wheel mounting work.
  • FIG. 7 is a plan view showing an outline of the inspection device 40.
  • the inspection device 40 includes a supply device P ⁇ P 41 for automatically supplying the thermostat 100 to the hot water tank 43, and a hot water tank 40 for heating the thermostat 100 to a predetermined temperature. 3 and thermostat 100 in hot water tank 4 3
  • the index tape 42 that rotates and moves at a predetermined speed, the measurement unit 50 that measures the valve open state of the thermostat 100 that has reached a predetermined temperature, and the measured thermostat 100 are discharged. It consists of P ⁇ P 44 for discharging means, OK chute 45 and NG box 46.
  • the supply P ⁇ P 41 used as the charging means uses the same pick and press unit as the C-shaped retaining ring introduction means 10 and the conveying means 30, and the C-shaped retaining ring mounting process S
  • the thermostat 100 conveyed from 3 is gripped by the gripper, moved to the index table 42 by the moving arm, and inserted into the insertion hole 42 a of the index table 42.
  • the index table 42 is a rotary table immersed in a hot water tank 43, and has insertion holes 42a, 42a, and 42a of thermostat 100 formed at equal intervals around the circumference. There are 16 2 a ⁇ ⁇ ⁇ formed.
  • the thermostat 100 is heated by the hot water tank 43 until the thermostat 100 is inserted by the supply PP 51 and rotated to reach the position of the measuring unit 50.
  • a predetermined temperature for example,
  • the hot water tank 43 heats the thermostat 100 inserted into the index table 42 to a predetermined temperature of 90 ° C.
  • the index table 42 is also heated by heating.
  • the aim is to stabilize the temperature.
  • the hot water tank 43 is provided with a heater with a temperature adjusting function (not shown) so that the hot water is always maintained at a predetermined temperature.
  • the measurement unit 50 measures whether the thermostat 100 has opened and the piston 107 has reached a predetermined protrusion amount when a predetermined temperature is reached. . Therefore, if the measurement terminal 51 of the dial gauge is applied to the bottom of the wax case 11 that has been pushed up when the temperature has reached the predetermined temperature, if there is a predetermined amount of protrusion, a 0K determination is made and the display of the measurement unit 50 is displayed. Is displayed.
  • the measuring unit 50 is connected to the controller of the discharge P and P 44, and the thermostat determined to be 0K is used.
  • the thermostat 100 whose protrusion amount does not reach the predetermined amount or whose protrusion amount exceeds the predetermined amount is judged to be NG, and is collected in the dedicated NG box 46 by the discharge ⁇ 44. ing.
  • the thermostat 100 having the C-shaped retaining ring mounted thereon is automatically supplied to the inspection device 40 by the supply device 51, and is heated to a predetermined temperature by the hot water tank 43.
  • the thermostat 100 that has been stably heated to the measurement is automatically performed by the unit 50, the non-defective product and the defective product are automatically sorted according to the measurement result, and the defective product is collected in the dedicated NG box 46.
  • the efficiency can be improved and the inspection accuracy can be improved.
  • the C-shaped retaining ring mounting step comprises: a C-shaped retaining ring aligning means for arranging the C-shaped retaining ring with a parts feeder; and a cylinder.
  • the C-shaped retaining ring opening / closing mechanism that opens and closes a pair of holders to grip or release the C-shaped retaining ring, and the vertical movement that inserts the C-shaped retaining ring gripped by the holder into the work body using a vertical movement cylinder
  • the mechanism and the C-shaped retaining ring insertion means provided with a C-type retaining ring allows the automatically aligned C-shaped retaining ring to be taken out and inserted into the work body.
  • the detection step includes: an input unit that automatically inputs the thermostat into the hot water tank; a hot water tank that heats the thermostat to a predetermined temperature; and a predetermined speed by gripping the thermostat in the hot water tank.
  • the thermostat is automatically provided by comprising: a turntable that rotates and moves at a temperature; a measurement unit that measures an open state of the thermostat that has reached the predetermined temperature; and a discharge unit that discharges the measured thermostat. Since it is injected into the inspection device and measured, it is possible to perform inspections in hot water and in one process as in actual use, improving efficiency in the inspection process and improving inspection accuracy. This has the effect of being able to increase

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Temperature-Responsive Valves (AREA)
  • Automatic Assembly (AREA)

Abstract

La présente invention concerne un procédé pour assembler un thermostat coulissant, qui permet d'améliorer l'efficacité d'une étape d'insertion de butée en forme de C pour thermostat coulissant, d'assurer un fonctionnement sûr et d'améliorer l'efficacité d'une étape d'inspection et donc, d'améliorer la précision de cette inspection. Ce procédé comprend une étape de moulage à la cire (S1) qui consiste à mettre de la cire (112) dans un moule à la cire (111), une étape d'assemblage de guide de moule qui consiste à monter un piston dans un bloc de guidage (108), une étape d'assemblage d'élément (S3) qui consiste à fixer le moule à la cire (111) et le bloc de guidage (108) de façon à ce qu'ils servent d'élément (110), une étape de montage de butée en forme de C (S4) qui consiste à insérer l'élément (110) dans un corps principal de soupape (101) et à monter un ressort (105) et une butée en forme de C (115), complétant alors un thermostat (100), puis une étape d'inspection (S5) qui consiste à inspecter automatiquement le thermostat complété, afin de séparer les bons produits des produits défectueux.
PCT/JP2002/003515 2001-04-23 2002-04-08 Procede pour assembler un thermostat WO2002090042A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001124275A JP2002321126A (ja) 2001-04-23 2001-04-23 サーモスタットの組立方法
JP2001-124275 2001-04-23

Publications (1)

Publication Number Publication Date
WO2002090042A1 true WO2002090042A1 (fr) 2002-11-14

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PCT/JP2002/003515 WO2002090042A1 (fr) 2001-04-23 2002-04-08 Procede pour assembler un thermostat

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JP (1) JP2002321126A (fr)
CN (1) CN1267245C (fr)
WO (1) WO2002090042A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015536443A (ja) * 2012-10-29 2015-12-21 佛山市川東磁電股▲ふん▼有限公司Ｃｈｕａｎｄｏｎｇ Ｍａｇｎｅｔｉｃ Ｅｌｅｃｔｒｏｎｉｃ Ｃｏ．，Ｌｔｄ バイメタル式防水サーモスタットの浸水耐圧性能のテスト方法及びテストシステム
CN116900734A (zh) * 2023-09-13 2023-10-20 昆山阿普顿自动化系统有限公司 一种节温器自动化生产线

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KR101725338B1 (ko) 2015-09-16 2017-04-27 주식회사 웰탑테크노스 연료압력조절기용 다이어프램 조립장치
CN106181305B (zh) * 2016-08-30 2018-07-17 和县新拓工业设计有限公司 阀体与橡胶圈装配机构
CN107498489B (zh) * 2017-09-29 2019-06-11 广西玉柴机器股份有限公司 一种发动机节温器座附件装配辅助装置及方法
CN111975312B (zh) * 2020-08-06 2022-01-28 四川同一热能设备有限公司 5管单通道热交换器组装生产系统

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JPH01242930A (ja) * 1988-03-24 1989-09-27 Toshiba Glass Co Ltd 温度計の水銀量調整封止装置
US4899297A (en) * 1987-04-08 1990-02-06 Terumo Kabushiki Kaisha Method and apparatus for automatically testing temperature measuring devices
JPH0672139U (ja) * 1992-03-25 1994-10-07 長野県 サーモスタット検査装置
JPH087693A (ja) * 1994-06-22 1996-01-12 Uchiya Thermostat Kk ヒューズスプリング内蔵サーモスタットの製造方法
JPH10138054A (ja) * 1996-09-12 1998-05-26 Myotoku Kk Ｃ形止め輪挿入機及びｃ形止め輪挿入工具
EP1067280A1 (fr) * 1999-01-27 2001-01-10 Nippon Thermostat Co., Ltd. Procede et dispositif pour reguler l'ecoulement d'un milieu refrigerant

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JP2000158245A (ja) * 1998-11-30 2000-06-13 Shinko Seisakusho Co Ltd 圧入品製造装置、部品分離装置、部品反転装置及び部品圧入装置

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Publication number Priority date Publication date Assignee Title
US4899297A (en) * 1987-04-08 1990-02-06 Terumo Kabushiki Kaisha Method and apparatus for automatically testing temperature measuring devices
JPH01242930A (ja) * 1988-03-24 1989-09-27 Toshiba Glass Co Ltd 温度計の水銀量調整封止装置
JPH0672139U (ja) * 1992-03-25 1994-10-07 長野県 サーモスタット検査装置
JPH087693A (ja) * 1994-06-22 1996-01-12 Uchiya Thermostat Kk ヒューズスプリング内蔵サーモスタットの製造方法
JPH10138054A (ja) * 1996-09-12 1998-05-26 Myotoku Kk Ｃ形止め輪挿入機及びｃ形止め輪挿入工具
EP1067280A1 (fr) * 1999-01-27 2001-01-10 Nippon Thermostat Co., Ltd. Procede et dispositif pour reguler l'ecoulement d'un milieu refrigerant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015536443A (ja) * 2012-10-29 2015-12-21 佛山市川東磁電股▲ふん▼有限公司Ｃｈｕａｎｄｏｎｇ Ｍａｇｎｅｔｉｃ Ｅｌｅｃｔｒｏｎｉｃ Ｃｏ．，Ｌｔｄ バイメタル式防水サーモスタットの浸水耐圧性能のテスト方法及びテストシステム
CN116900734A (zh) * 2023-09-13 2023-10-20 昆山阿普顿自动化系统有限公司 一种节温器自动化生产线
CN116900734B (zh) * 2023-09-13 2023-12-19 昆山阿普顿自动化系统有限公司 一种节温器自动化生产线

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CN1267245C (zh) 2006-08-02
JP2002321126A (ja) 2002-11-05
CN1458874A (zh) 2003-11-26

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