CN1139732C - Oil path structure of crank shaft - Google Patents
Oil path structure of crank shaft Download PDFInfo
- Publication number
- CN1139732C CN1139732C CNB001081241A CN00108124A CN1139732C CN 1139732 C CN1139732 C CN 1139732C CN B001081241 A CNB001081241 A CN B001081241A CN 00108124 A CN00108124 A CN 00108124A CN 1139732 C CN1139732 C CN 1139732C
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- CN
- China
- Prior art keywords
- oil
- journal
- bent axle
- crankshaft journal
- oil groove
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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- Lubrication Of Internal Combustion Engines (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
To reduce cost by communicating an oil reservoir mounted on an outside surface of a crank web which is adapted to feed oil to a crank pin with an oil feed passage connected to an oil pump by a groove which is worked extremely easily. This structure comprises a side plate 71 to define an oil reservoir 61 communicating with a circumferential face of a crank pin 10p mounted on an outer end face of a crank web 10w. And the oil reservoir 61 and an oil feed passage 58, which is connected with an oil pump 32, are communicated by an oil groove 59 which is formed on the outer circumferential face of a crank journal 10j1 supported on a crank case 6 via a bearing 151.
Description
The present invention relates generally to the oil path structure of the crankpin outer circumferential face that is used for the lubricating engine bent axle.Particularly about the side plate that divide to form the trapped fuel portion that is communicated with the outer circumferential face of crankpin being installed on the exterior edge face of this bent axle web, making the improvement of the bent axle oil path structure that the fuel feeding path that is connected in oil pump is communicated with above-mentioned trapped fuel portion.
About the oil path structure of bent axle,, be known technology as the structure that the real public clear 57-45460 communique of Japan etc. is disclosed.
In the oil path structure of above-mentioned communique record, because fuel feeding path that is connected with oil pump and above-mentioned trapped fuel portion be communicated with, so will on bent axle, process from the crooked oilhole of the extremely above-mentioned trapped fuel of the axle head portion of bent axle.
But when the so crooked oilhole of processing, owing to must process on both direction with drill bit, it is long therefore to process the needed time, and this is a main cause that can not reduce cost.
The present invention is exactly in view of the above problems and proposes, and its objective is the oil path structure that the bent axle of a kind of available groove that is highly susceptible to processing with being communicated with, can reducing cost between above-mentioned trapped fuel portion and the fuel feeding path is provided.
In order to finish above-mentioned purpose, a first aspect of the present invention is on the exterior edge face of bent axle web side plate to be installed.This side plate is divided and is formed the trapped fuel portion that is communicated with the outer circumferential face of crankpin, the fuel feeding path that is connected in oil pump is communicated with above-mentioned trapped fuel portion, by means of by bearings formed oil groove on the outer circumferential face of the crankshaft journal on the crankcase, will be communicated with between above-mentioned fuel feeding path and the trapped fuel portion.
According to this first aspect, be easy on the outer circumferential face of crankshaft journal, process oil groove, can realize being communicated with between fuel feeding path and the above-mentioned trapped fuel portion simply, improved the productivity of bent axle, reduced expense.
The second aspect of the present invention on the basis of first aspect be, above-mentioned oil groove forms in the mode of the axis that is parallel to crankshaft journal.
According to this second aspect, above-mentioned oil groove can form in crankshaft forging, does not therefore need special groove manufacturing procedure, has improved the productivity of bent axle, has reduced cost.
The third aspect of the present invention on the basis of second aspect be, above-mentioned oil groove be arranged on respect to the rotating center of crankshaft journal and with the phase shifting of crankpin 90 ° position slightly.
According to this third aspect, when piston moves back and forth between upper dead center and lower dead centre, oil groove is in the position on the plane with the axis normal of cylinder-bore, near can avoiding big normal load being applied to oil groove from piston, prevents that the intensity of the crankshaft journal that causes because of oil groove from reducing.
The present invention in first the fourth aspect to the basis of the third aspect is, crankshaft journal makes the big gauge structure greater than the axle journal foreign side axial region that extends to foreign side from this axle journal, the inlet of above-mentioned oil groove is opened on the circular step portion between this crankshaft journal and the axle journal foreign side axial region, divide the ring-type grease chamber that forms in the face of the inlet of the outer side surface of described bearing and described oil groove by means of the crankcase of supporting above-mentioned bearing, above-mentioned fuel feeding path is connected with this grease chamber.
According to this fourth aspect, the lubricant oil Castor Oil that flows into the ring-type grease chamber from the fuel feeding path supports the bearing of crankshaft journal, and the lubricant oil of ring-type grease chamber can along not against the direction of centrifugal force directly by oil groove, can successfully oil be supplied with crankpin.
Fig. 1 is the profile that is applicable to motor bike of the present invention rear portion.
Fig. 2 is the sectional view in the 2-2 cross section among Fig. 1.
Fig. 3 is the sectional view in the 3-3 cross section among Fig. 2.
Fig. 4 is the sectional view in the 4-4 cross section among Fig. 3.
Fig. 5 is the sectional view in the 5-5 cross section among Fig. 3.
Fig. 6 is the sectional view in the 6-6 cross section among Fig. 3.
Fig. 7 is the oil pump enlarged view on every side of Fig. 3.
Fig. 8 is the sectional view in the 8-8 cross section among Fig. 7.
Fig. 9 is the perspective exploded view of bent axle.
Figure 10 is the perspective view of lid.
Below, the one embodiment of the invention shown in illustrate form of implementation of the present invention with reference to the accompanying drawings.
At first, in Fig. 1, motor bike 1 is a scooter, at the rear portion of this vehicle frame 2, by connecting rod 9 the power plant P that is used to drive trailing wheel Wr can be installed with freely swinging along the vertical direction, between these power plant P and vehicle frame 2, posterior bumper 3 be installed simultaneously.
As shown in Figure 2, power plant P comprises: water-cooled four-cycle motor 4 and the belt type continuously variable transmission 5 that combines with the left surface of this motor 4.Rearward end one side at stepless speed variator 5 is equipped with the trailing wheel Wr that is positioned at position, motor 4 dead astern.
In Fig. 2～Fig. 4, motor 4 with crankcase 6, be arranged on the cylinder block that slightly is horizontal arrangement 7 of these crankcase 6 fronts with connecting and be connected the main body of the top cylinder head 8 of this cylinder block 7 as motor.Hold and be supported in bent axle 10 in the crankcase 6, be connected by connecting rod 12 on the piston 11 of lifting in the cylinder-bore 7a of cylinder block 7.
Crankcase 6 is by being connected cylinder block 7 anterior case halfbody 6a integratedly and forming with the rear portion case halfbody 6b that this front portion case halfbody 6a combines by bolt.Between this case halfbody 6a, 6b, use ball bearing 15 respectively
1, 15
2The left and right sides crankshaft journal 10j of clamping bent axle 10
1, 10j
2This bent axle 10 from left crankshaft journal 10j
1The drive pulley 16 of above-mentioned stepless speed variator 5 is installed on the axial region 10e of axle journal foreign side that foreign side extends.Gearbox 17 is connected the left side of crankcase 6 by bolt.
In the right part of the crankcase 6 of the opposite side of stepless speed variator 5, be formed with the Transmission Room 18 that sets above-mentioned timing transmission device 13 and in abutting connection with the cylindric secondary unit room 19 in these Transmission Room 18 outsides.On the next door 20 between this Transmission Room 18 and the secondary unit room 19, the oil sealing 21 that contacts with the outer circumferential face sealing of bent axle 10 is installed.
As Fig. 3 and shown in Figure 5, in secondary unit room 19, be equipped with several boss 19a within it on the wall, the stator 22s of generator 22 is fixed on this several boss 19a with several bolts 23 (with reference to Fig. 5), and its rotor 22r then is fixed on the right part of bent axle 10 with bolt 24.
And,, be connected with secondary unit room lid 25 and fan cover 26 in turn at the right-hand member of crankcase 6.The radiator 28 in engine cooling week is installed in the outer end of fan cover 26.Being used for this cooling fan 27 that cools off this radiator 28 and generator 22 is provided in the fan cover 26.Bolt 24 and rotor 22r that these cooling fan 27 usefulness are above-mentioned are fixed on the bent axle 10 together.
As shown in Figure 3 and Figure 4, be formed with trapped fuel portion 29 in the bottom of crankcase 6, the lubricant oil 30 that is stored in this trapped fuel portion 29 is sucked by oil pump 32 by oil strainer 31, and this oil pump 32 is transported to oil at other position of bent axle 10 and motor.
The bottom of case halfbody 6a forwardly is formed on the cylindric filter chamber 33 of its front openings.Accommodate the above-mentioned oil strainer 31 of cup-shaped in this chamber 33 and keep spring 35, this maintenance spring 35 is provided with the sealed member 34 of the opening end of this oil strainer 31 towards this chamber 33 inwall directions pushing.The opening portion of this chamber 33 has been threaded and has covered 36.
And, if lid 36 is unloaded, taking out oil strainer 31, can clean it, perhaps allow oil the lubricant oil 30 of trapped fuel portion 29 be discharged through filter chamber 33.Therefore, lid 36 is gone back the effect that double as is drained bolt.
Among Fig. 7, oil pump 32 is provided with on the inwall of above-mentioned Transmission Room 18 of an opposite side in above-mentioned next door 20.This oil pump 32 has pump case 40, is contained in pump rotor 41 in this pump case 40 and the pump cover 42 that engages with the opening surface of pump case 40.Pump cover 42 is provided with above-mentioned suction port 32i and exhaust port 32o.And pump case 40 and pump cover 42, are fixed on by bolt 43 on the inwall of above-mentioned Transmission Room 18 as inboard with this pump cover 42.And the circle of pump rotor 41 lacks in the attachment hole 44 of shape, but the chimeric pump shaft 46 that is connected with the bearing hole 45 that connects pump case 40 in plug ground.
When the boss 48a of driven gear 48 is entrenched on the pump shaft 46, be connected on this pump shaft 46 by connecting pin 68.That is, as shown in Figure 8, connecting pin 68 is installed on the pump shaft 46 in the mode of crossing pump shaft 46, and matches with the keyway 69 of the boss 48a end face of driven gear 48, will link together between pump shaft 46 and the driven gear 48 thus.
In above-mentioned Transmission Room 18, driven gear 48 forms the major diameter away from oil pump 32 by actuation gear 47 deceleration that are fixed on the bent axle 10.Also have, on actuation gear 47, formed above-mentioned timing transmission device 13 sprocket wheels 49.
On above-mentioned next door 20, the part with oil pump 32 face-off be provided with oil pump 32 diameters roughly the same promptly away from the small-diameter circular mounting hole 50 of driven gear 48, can carry out the handling operation of oil pump 32 from secondary unit room 19 by this mounting hole 50, particularly can realize the loading and unloading of bolt 43.
By sealed member 53 is chimeric lid 52 arranged on the above-mentioned mounting hole 50.Can support the outer end of above-mentioned pump shaft 46 at the inner side surface of this lid 52 with rotating freely, simultaneously, be provided with the bag shape bearing hole 51 that restriction pump shaft 46 axially moves.In addition, on this lid 52, as shown in figure 10, be provided with in one piece from its outer end periphery to the outstanding fan-shaped flange 54 of radial direction with from the outstanding pillar 55 of outer side surface.This flange 54 contacts with the above-mentioned next door 20 of secondary unit room 19 sides, by elastomeric cap 56 inner side surface of said stator 22s is pushed into the tip of pillar 55, thus, lid 52 is remained on mounting hole 50 fixed position really.
The exhaust port 32o of oil pump 32 by be formed at fuel feeding path 58 on the anterior case halfbody 6a, facing to carries left crankshaft journal 10j
1Ball bearing 15
1Grease chamber 60, the left crankshaft journal 10j of outer side surface
1Outer circumferential face on formed oil groove 59, be arranged on and left crankshaft journal 10j
1 Trapped fuel portion 61, the hollow portion 62 of crankpin 10p and the nozzle opening 63 that is arranged on the radial direction on the crankpin 10p on the bent axle web 10w that one connects are communicated with the peripheral part of crankpin 10p.Make the outer circumferential face of the crankpin 10p of above-mentioned nozzle opening 63 openings, supporting the big end 12b of above-mentioned connecting rod 12 by needle bearing 64 (with reference to Fig. 4).
Below, describe above-mentioned oil channel structures in detail.
On the outer side wall 65 of stepless speed variator 5 one sides of crankcase 6, be embedded with and be used to support left crankshaft journal 10j
1Ball bearing 15
1The outer ring, simultaneously, the oil sealing 66 that closely contacts with the axial region 10e of axle journal foreign side is housed, by above-mentioned outer side wall 65 and oil sealing 66, define in the face of ball bearing 15
1The above-mentioned grease chamber 60 of ring-type of outer side surface.
Left side crankshaft journal 10j
1Be greater than from this axle journal 10j
1The large-diameter portion branch of the axial region 10e of axle journal foreign side that extends to foreign side, therefore, at this left side crankshaft journal 10j
1And between the axial region 10e of axle journal foreign side, form circular step portion 67 in the face of above-mentioned grease chamber 60.At left crankshaft journal 10j
1Outer circumferential face on, be formed with a pair of from above-mentioned circular step portion 67 to left crankshaft journal 10j
1The above-mentioned oil groove 59 of root, this oil groove 59 is inlet towards the opening end of stepped part 67.
Because oil groove 59 forms when crankshaft forging 10, so form easily, from Fig. 6 and Fig. 9 as can be seen, oil groove 59 is arranged on respect to left crankshaft journal 10j
1Rotating center and the phase shifting of crankpin 10p slightly 90 ° two positions and left crankshaft journal 10j
1Parallel axes ground configuration.
Moreover, in bent axle 10, with left crankshaft journal 10j
1Be on the outer side surface of bent axle web 10w of homonymy and be formed with circular depressions 70.In this recess 70, be pressed into around left crankshaft journal 10j
1Ring-type side plate 71.Between side plate 71 and bent axle web 10w, divide to form the above-mentioned trapped fuel portion 61 of annular flat.The exit opening of above-mentioned oil groove 59 is in the inboard of these trapped fuel portion 61 radial directions.The hollow portion 62 of crankpin 10p is opened on the intermediate portion of this trapped fuel portion 61.
As shown in Figure 6, forwardly on case halfbody 6a, cylinder block 7 and the cylinder head 8, be provided with the 2nd fuel feeding path 58 from above-mentioned fuel feeding path 58 differences ', by the 2nd fuel feeding path 58 ' to above-mentioned operating valve mechanism 74 fuel feeding.
Secondly, the effect of present embodiment is described.
When oil pump 32 and drive system thereof are installed, at first, in the anterior case halfbody 6a of the front that combines with rear portion case halfbody 6b, at the Transmission Room 18 inner oil pumps 32 that insert, by pass the bolt 43 that mounting hole 50 inserts in the Transmission Room 18 by secondary unit room 19, this oil pump 32 is installed in the given location of Transmission Room 18 inwalls.
Secondly, forwardly in the Transmission Room 18 of case halfbody 6a, the driven gear 48 that inserts big footpath makes itself and oil pump 32 adjacency.Then, the pump shaft 46 that has connecting pin 68, pass mounting hole 50 from secondary unit room 19 sides, intercalation is in the attachment hole 44 of the bearing hole 45 of the boss 48a of driven gear 48, pump casing 40 and pump rotor 41 successively, simultaneously, connecting pin 68 is cooperated with the keyway 69 of above-mentioned boss 48a.
At last, in the mounting hole 50 of next door 20, setting-in lid 52 is equipped with sealed member 53 on the periphery of this lid 52, when being fitted to the outer end of pump shaft 46 in this bearing hole 51, flange 54 is docked with the outer side surface in next door 20.In this state, the point of the pillar 55 of lid 52 is covered by elastomeric cap 56.
Like this, even the mounting hole 50 in next door 20 is littler than the diameter of driven gear 48, when oil pump 32 is installed on the inwall of the narrower Transmission Room 18 of width, also can be connected to driven gear 48 on the pump shaft 46 simply.And, because path mounting hole 50 is path mounting holes littler than driven gear 48 diameters, can causes that hardly the intensity in next door 20 reduces, thereby help lightweight.
Because passing the axial of pump shaft 46 of driven gear 48, pump casing 40 and pump rotor 41 moves, be subjected to being entrenched in the restriction of the bag shape bearing hole 51 of the lid 52 in the mounting hole 50, therefore, do not need to be specifically designed to the parts such as clip that prevent that pump shaft 46 from extracting, realized the simplification of structural element.
Because the bearing hole 51 of lid 52 and the bearing hole 45 of pump casing 40 pump shaft 46 from the supported on both sides of driven gear 48 together, therefore this support is firm, improves the durability of oil pump 32.
Afterwards, when the whole motor of assembling, the stator 22s of fixing generator 22 on secondary unit room 19 inwalls of crankcase 6, its interior edge face is pressed in the point of the pillar 55 of lid 52 by elastomeric cap 56, thus, by lid 52 flange 54 is remained on the given location that docks with the outer side surface in next door 20, therefore, do not need special-purpose holding members such as bolt, can simplify this maintenance structure.On the other hand, be fixed on actuation gear 47 and driven gear 48 engagements on the bent axle 10, become the state that may drive oil pump 32.
In the working procedure of motor 4, but because the actuation gear 47 deceleration driven gears 48 that rotates simultaneously with bent axle 10, so can be with the rotor 41 of suitable speed driving oil pump 32.The oil pump 32 of doing this action sucks by the lubricant oil 30 of oil strainer 31 with trapped fuel portion 29, and is sent in the hollow portion 62 and nozzle opening 63 of fuel feeding path 58, grease chamber 60, oil groove 59, crankpin 10p, the left crankshaft journal 10j of lubricated support in grease chamber 60
1Ball bearing 15
1, the inner peripheral surface of the big end 12b of lubricated its outer circumferential face, needle bearing 64 and connecting rod 12 in crankpin 10p.
At this moment, because the inlet of above-mentioned oil groove 59 is opened on the left crankshaft journal 10j in big footpath
1And in the circular step portion 67 between the axial region 10e of axle journal foreign side of path, oil groove 59 is not directly passed through against the direction of centrifugal force in the lubricant oil edge in the grease chamber 60, can successfully oil be supplied with crankpin 10p.
Because ball bearing 15
1Be communicated with between the trapped fuel portion 61 outside grease chamber 60 and the bent axle web 10w in the outside, be formed on left crankshaft journal 10j
1Outer circumferential face on oil groove 59 can process at an easy rate.Particularly, oil groove 59 is being configured to and left crankshaft journal 10j
1The occasion of parallel axes, this groove 59 can form in crankshaft forging 10, therefore, does not need special groove manufacturing procedure, has improved the productivity of bent axle 10, has reduced cost.
In addition, because left crankshaft journal 10j
1The oil groove 59 of outer circumferential face is configured in respect to left crankshaft journal 10j
1The position that the phase shifting of rotating center and crankpin 10p is about 90 °, when piston 11 moves back and forth between upper dead center and lower dead centre, oil groove 59 is in the position on the plane with the axis normal of cylinder-bore 7a, therefore, can avoid from piston 11 big normal load being applied to left crankshaft journal 10j
1Oil groove 59 near, prevent the left crankshaft journal 10j that causes because of oil groove 59
1Intensity reduce.
The present invention is not limited to the above embodiments, without departing from the spirit and scope of the present invention, can make numerous variations.For example, replace being used to support crankshaft journal 10j
1Ball bearing 15
1, also sliding bearing can be set.In addition, oil groove 59 and trapped fuel portion 61 also can be arranged on right crankshaft journal 10j
2On bent axle web 10w.
According to the oil path structure of the bent axle of above a first aspect of the present invention, at the bent axle web Side plate is installed on the outer face. This side plate is divided and is formed the trapped fuel that is communicated with the outer peripheral face of crankpin Section, the fuel feeding path that is connected in oil pump is communicated with above-mentioned trapped fuel section, by means of passing through bearings Formed oil groove on the outer peripheral face of the crankshaft journal on the crankcase, with above-mentioned fuel feeding path and Be communicated with between the trapped fuel section. Therefore be easy to process oil groove at the outer peripheral face of crankshaft journal, energy Realize simply being communicated with between fuel feeding path and the above-mentioned trapped fuel section, improved the productivity ratio of bent axle, Reduced cost.
The oil path structure of bent axle according to a second aspect of the invention, above-mentioned oil groove is to be parallel to song The mode of the axis of shaft neck forms. Therefore this groove can form in crankshaft forging, does not need Want special groove manufacturing procedure, improved the productivity ratio of bent axle, reduced cost.
The oil path structure of bent axle according to a third aspect of the invention we, above-mentioned oil groove is arranged on relatively In the pivot of crankshaft journal and with the phase shifting of crankpin 90 ° position slightly. Can avoid Near big normal load being applied to the oil groove of crankshaft journal from piston, prevent from causing because of oil groove The strength decreased of crankshaft journal.
The oil path structure of bent axle according to a forth aspect of the invention, crankshaft journal make greater than from This axle journal is to the big gauge structure of the axle journal foreign side axial region of foreign side's extension, the entrance opening of above-mentioned oil groove Circular step section between this crankshaft journal and axle journal foreign side axial region is by means of supporting above-mentioned axle The crankcase division of holding forms the ring-type in the face of the entrance of the lateral surface of described bearing and described oil groove The grease chamber, above-mentioned fuel feeding path is connected with this grease chamber. Therefore flow into the ring-type grease chamber from the fuel feeding path The lubricating oil Castor Oil supports the bearing of crankshaft journal, and the lubricating oil of ring-type grease chamber can be along not contrary The direction of centrifugal force directly by oil groove, can successfully oil be supplied with crankpin.
Claims (4)
1, a kind of oil path structure of bent axle, side plate (71) is installed on the exterior edge face of bent axle web (10w), described side plate (71) is divided and is formed the trapped fuel portion (61) that is communicated with the outer circumferential face of crankpin (10p), the fuel feeding path (58) that is connected in oil pump (32) is communicated with described trapped fuel portion (61), it is characterized in that, by means of passing through bearing (15
1) be supported on the crankshaft journal (10j on the crankcase (6)
1) outer circumferential face on formed oil groove (59), will be between described fuel feeding path (58) and the trapped fuel portion (61) be communicated with.
2, require the oil path structure of 1 described bent axle according to power, it is characterized in that, described oil groove (59) is to be parallel to crankshaft journal (10j
1) the mode of axis form.
3, require the oil path structure of 2 described bent axles according to power, it is characterized in that, described oil groove (59) is arranged on respect to crankshaft journal (10j
1) rotating center and with the phase shifting of crankpin (10p) 90 ° position slightly.
4, require the oil path structure of each described bent axle of 1～3 according to power, it is characterized in that crankshaft journal (10j
1) make greater than from this axle journal (10j
1) the big gauge structure of the axle journal foreign side axial region (10e) that extends to foreign side, the inlet of described oil groove (59) is opened on this crankshaft journal (10j
1) and axle journal foreign side axial region (10e) between circular step portion (67), by means of supporting described bearing (15
1) crankcase (6) divide to form in the face of described bearing (15
1) outer side surface and the ring-type grease chamber (60) of the inlet of described oil groove (59), described fuel feeding path (58) is connected with this grease chamber (60).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12175299A JP4226141B2 (en) | 1999-04-28 | 1999-04-28 | Crankshaft oil passage structure |
| JP121752/1999 | 1999-04-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1271819A CN1271819A (en) | 2000-11-01 |
| CN1139732C true CN1139732C (en) | 2004-02-25 |
Family
ID=14819020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001081241A Expired - Fee Related CN1139732C (en) | 1999-04-28 | 2000-04-28 | Oil path structure of crank shaft |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4226141B2 (en) |
| CN (1) | CN1139732C (en) |
| IT (1) | IT1320292B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6632734B2 (en) * | 2016-09-27 | 2020-01-22 | 本田技研工業株式会社 | Lubrication structure of internal combustion engine |
-
1999
- 1999-04-28 JP JP12175299A patent/JP4226141B2/en not_active Expired - Lifetime
-
2000
- 2000-04-20 IT IT2000TO000374A patent/IT1320292B1/en active
- 2000-04-28 CN CNB001081241A patent/CN1139732C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| IT1320292B1 (en) | 2003-11-26 |
| ITTO20000374A1 (en) | 2001-10-20 |
| JP4226141B2 (en) | 2009-02-18 |
| JP2000310214A (en) | 2000-11-07 |
| ITTO20000374A0 (en) | 2000-04-20 |
| CN1271819A (en) | 2000-11-01 |
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