CN1271805A - Oil pump device of engine - Google Patents
Oil pump device of engine Download PDFInfo
- Publication number
- CN1271805A CN1271805A CN 00106902 CN00106902A CN1271805A CN 1271805 A CN1271805 A CN 1271805A CN 00106902 CN00106902 CN 00106902 CN 00106902 A CN00106902 A CN 00106902A CN 1271805 A CN1271805 A CN 1271805A
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- mentioned
- oil pump
- pump
- driven gear
- oil
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- Lubrication Of Internal Combustion Engines (AREA)
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Abstract
To enable the location of an oil pump and driven gear in a narrow transmission chamber even if a fitting hole provided in a bulkhead between a neighboring transmission chamber and an auxiliary chamber within a crankcase is of a smaller diameter than a driven gear coupled to a pump shaft. An oil pump 32 is attached to an inner wall of a transmission chamber 18 and is located in the transmission chamber together with a driven gear 48 coupled to a pump shaft 46 and of a larger diameter than the oil pump 32. A fitting hole 50 enabling detachment of the oil pump 32 from the side of the auxiliary chamber 19 is provided at a bulkhead 20 between the transmission chamber 18 and the auxiliary chamber 19. The pump shaft 46 can be withdrawn in one direction with respect to a housing 40 and pump rotor 41 of the oil pump 32 and with respect to the driven gear 48, the fitting hole 50 is formed with a smaller diameter than the driven gear 48, and movement in the axial direction of the pump shaft 46 is restricted by a cover 52 for closing the fitting hole 50.
Description
The present invention relates to a kind of oil pump device of motor, relate in particular to the improvement of this oil pump device, promptly, side at engine crankcase is formed with Transmission Room and the auxiliary engine room adjacent with the outside of this Transmission Room, on the inwall of above-mentioned Transmission Room, oil pump is installed, in above-mentioned Transmission Room, be equipped with and connect by the oil pump shaft of this oil pump, diameter is than the big driven gear of oil pump and be used to drive this driven gear, be fixed on the actuation gear on the bent axle, on the next door between above-mentioned Transmission Room and the auxiliary engine room, the mounting hole that can carry out the dismounting operation of above-mentioned oil pump from auxiliary engine room one side is set, seals this mounting hole with lid.
The oil pump device of such motor, as Japanese patent gazette real open clear 61-63492 number disclosed, be well known.
Such oil pump device, opening installation hole just can set oil pump and power train thereof from the narrow Transmission Room of auxiliary engine room one side direction at an easy rate.
But existing apparatus is installed oil pump and driven gear from auxiliary engine room one side fully in order to make it as above-mentioned communique is described, have to do the diameter of mounting hole bigger than driven gear.So, the mounting hole diameter is very big, must consider to remedy the Transmission Room that causes therefrom and the reduction of the next door intensity between the auxiliary engine room.
The present invention proposes in light of this situation, its objective is the oil pump device that a kind of above-mentioned motor is provided, even make it make the mounting hole diameter on the next door that is arranged between Transmission Room and the auxiliary engine room littler, also can set oil pump and driven gear to narrow Transmission Room than driven gear.
For achieving the above object, engine oil pump-unit of the present invention is, side at the crankcase of motor, be formed with Transmission Room and the auxiliary engine room adjacent with the outside of this Transmission Room, on the inwall of above-mentioned Transmission Room, oil pump is installed, in above-mentioned Transmission Room, set and connect by the pump shaft of this oil pump, diameter is than the big driven gear of oil pump and be used to drive this driven gear, be fixed on the actuation gear on the bent axle, the mounting hole that can carry out the dismounting operation of above-mentioned oil pump from auxiliary engine room one side is set on the next door between above-mentioned Transmission Room and the auxiliary engine room, seal this mounting hole with lid, its the 1st feature is: make pump case and pump rotor that above-mentioned pump shaft can above-mentioned relatively oil pump, and above-mentioned driven gear is extracted and is inserted, on the other hand, make the diameter of above-mentioned mounting hole littler, limit moving axially of above-mentioned pump shaft by the lid that seals mounting hole than above-mentioned driven gear.
According to the 1st feature, at first, after auxiliary engine room one side has been inserted the oil pump installation exercise of Transmission Room by mounting hole, driven gear is inserted Transmission Room, make itself and oil pump adjacent, then by mounting hole from auxiliary engine room one side with pump shaft intercalation successively on driven gear, pump case and pump rotor, therefore, even the mounting hole diameter is littler than driven gear, also can oil pump be installed, on pump shaft, connects driven gear to the Transmission Room of narrow width very simply.Therefore, because little intensity, the energy weight reduction that can guarantee above-mentioned next door of mounting hole diameter.
And, owing to insert moving axially of the pump shaft that leads on driven gear, pump casing and pump rotor by lid restriction,, can also make simple in structure so do not need the parts peculiar that prevents that pump shaft from deviating from.
In addition, the 2nd feature of the present invention is on the basis of the 1st feature, the bearing hole that above-mentioned pump shaft is supported in rotation freely to be set on above-mentioned lid.
According to the 2nd feature, because the bearing hole of lid is with the bearing hole of pump case, at the two-side supporting pump shaft of driven gear, so this supporting is reliable, helps the raising of oil pump durability.
In addition, the 3rd feature of the present invention is on the basis of the 1st or the 2nd feature, to stop above-mentioned lid to break away from away from above-mentioned mounting hole by the subsidiary engine that is fixed on above-mentioned auxiliary engine room.
According to the 3rd feature,,, can make its fixed structure simple so do not need to be used for the retaining element of the special use of lid because the subsidiary engine that is fixed on auxiliary engine room is used for preventing that lid breaks away from away from mounting hole.
Fig. 1 is a back side view of using motorcycle of the present invention.
Fig. 2 is the 2-2 line sectional view of Fig. 1.
Fig. 3 is the 3-3 line sectional view of Fig. 2.
Fig. 4 is the 4-4 line sectional view of Fig. 3.
Fig. 5 is the 5-5 line sectional view of Fig. 3.
Fig. 6 is the 6-6 line sectional view of Fig. 3.
Fig. 7 is the oil pump enlarged view on every side of Fig. 3.
Fig. 8 is the 8-8 line sectional view of Fig. 7.
Fig. 9 is the exploded perspective view of bent axle.
Figure 10 is the stereogram of lid.
Following foundation one embodiment of the invention shown in the drawings describe form of implementation of the present invention.
At first, at Fig. 1, motorcycle 1 is a pedal motorcycle, at the rear portion of its vehicle frame 2, by connecting ring 9 the power unit P that drives trailing wheel Wr is installed, and it can be shaken freely at above-below direction, and between this power unit P and vehicle frame 2 rear shock absorber 3 is installed.
As shown in Figure 2, power unit P is made of water-cooled four cycle engine 4 and the belt type continuously variable transmission 5 that is connected the left surface of this motor 4, the rear end of this stepless speed variator 5 side and then motor 4 trailing wheel Wr is installed.
At Fig. 2～Fig. 4, motor 4 constitutes engine body by the cylinder body 7 of crankcase 6, the front that is arranged on this crankcase 6, horizontal arrangement and the top cylinder cap 8 that is connected cylinder body 7, bent axle 10 by crankcase 6 is taken in and supported is connected by the piston 11 of connecting rod 12 with lifting in the cylinder barrel 7a of cylinder body 7.
On cylinder cap 8, be provided with the known slotted link mechanism 74 that comprises the camshaft 14 that is driven by bent axle 10 by timing transmission device 13 and by the air-breathing door 72 and the exhaust valve 73 (with reference to Fig. 4) of slotted link mechanism 74 open and closes.
Crankcase 6 is constituted the left and right sides crankshaft journal 10j of bent axle 10 by preceding casing 6a that fuses with cylinder body 7 and the rear box 6b that is connected on this preceding casing 6a with bolt
1, 10j
2Respectively by ball bearing 15
1, 15
2Seize on both sides by the arms between these front and back casing 6a, 6b.This bent axle 10, from left crankshaft journal 10j
1The drive pulley 16 of above-mentioned stepless speed variator 5 is installed on the outward extending crankshaft journal outside axial region 10e, and its gearbox casing 17 usefulness bolts are connected on the left side of crankcase 6.
Crankcase 6, with the right part of stepless speed variator 5 opposite sides on, be formed with the Transmission Room 18 of the above-mentioned timing transmission device 13 of configuration and the cylindraceous auxiliary engine room 19 adjacent with its outside, on the next door 20 between this Transmission Room 18 and the auxiliary engine room 19, the oil sealing 21 that the outer circumferential face with bent axle 10 connects airtight is installed.
As Fig. 3 and shown in Figure 5, at auxiliary engine room 19, on the some lug boss 19a that are based on its inwall, be fixed with the stator 22s of generator 22 (subsidiary engine) by some bolts 23 (with reference to Fig. 5), its rotor 22r is fixed on the right-hand member of bent axle 10 by bolt 24.
In addition, be connected with auxiliary engine room cover 25 and fan guard 26 in turn at the right-hand member of crankcase 6, in the outer end of fan guard 26, the radiator 28 that engine cooling is used be installed, the cooling fan 27 that is used to cool off this radiator 28 and generator 22 is configured in the fan guard 26.This cooling fan 27 is fixed on the bent axle 10 with rotor by above-mentioned bolt 24.
As shown in Figure 3 and Figure 4, oil sump 29 is formed at the bottom of crankcase 6, stores in this lubricant oil 30 to be sucked by oil pump 32 by oil purifier 31, is sent to bent axle 10 and each one of other motor by this pump 32.
Be formed with the filter chamber cylindraceous 33 of its open-front in the bottom of preceding casing 6a, the Sealing 34 of taking in the above-mentioned oil purifier 31 of cup-shaped and will be attached to these oil purifier 31 open-mouth ends in this chamber 33 presses against the maintenance spring 35 on the inwall of this chamber 33, and the opening portion in this chamber 33 has screwed togather lid 36.
And, can take out oil purifier 31 and clean if unload 36 on lid, can also the lubricant oil of oil sump 29 be discharged into the outside by filter chamber 33.Therefore, lid 36 double as purge cocks.
At Fig. 7, oil pump 32 be installed in above-mentioned Transmission Room 18, with the inwall of above-mentioned next door 20 opposite sides on.This oil pump 32 possesses: pump case 40; Be accommodated in its inner pump rotor 41; The pump cover 42 that is connected with the open face of pump case 40 is provided with above-mentioned suction port 32i and discharge opening 32o on pump cover 42.And pump case 40 and pump cover 42 make this pump cover 42 be positioned at the inboard, are fixed on by bolt 43 on the inwall of above-mentioned Transmission Room 18.In addition, on the attachment hole 44 of the scarce circle of pump rotor 41, can insert and extract the chimeric pump shaft 46 that the bearing hole 45 that connects pump case 40 is arranged in ground.
The chimeric wheel hub 48a that driven gear 48 is arranged on pump shaft 46, and by connecting pin 68 connections.That is, as shown in Figure 8, connecting pin 68 crosses pump shaft 46 and is installed on the pump shaft 46, and it is fastened in the keyway 69 of end face of driven gear 48 wheel hub 48a, realizes between pump shaft 46 and the driven gear 48 thus connecting.
On above-mentioned next door 20, be formed with the mounting hole 50 of the circle that diameter is roughly identical with oil pump 32, to be diameter more much smaller than driven gear 48 with oil pump 32 opposed parts, make it carry out the dismounting operation of oil pump 32 from auxiliary engine room 19, especially can carry out the dismounting of bolt 43 by this mounting hole 50.
The discharge opening 32o of oil pump 32 is connected by the outer circumferential face of following oil circuit with crankpin 10p, and they are: the supply oil circuit 58 before being formed on the casing 6a; Support left crankshaft journal 10j
1Ball bearing 15
1The grease chamber 60 that faces of outer side surface; Be formed at left crankshaft journal 10j
1Outer circumferential face on oil groove 59; Be located at and left crankshaft journal 10j
1Oil sump 61 on the crankshaft web 10w that fuses; The hollow portion 62 of crankpin 10p; Be located at the nozzle opening radially 63 on the crankpin 10p.The outer circumferential face of offering the crankpin 10p of above-mentioned nozzle opening 63 supports the big end 12b of above-mentioned connecting rod 12 by needle bearing 64 (with reference to Fig. 4).
In further detail above-mentioned oil circuit is described.
On outer side walls 65 crankcase 6, stepless speed variator 5 one sides, be embedded with the left crankshaft journal 10j of supporting
1Ball bearing 15
1Bearing outer ring, and the oil sealing 66 that connects airtight with crankshaft journal outside axial region 10e is installed, be divided into ball bearing 15 by above-mentioned outer side wall 65 and oil sealing 66
1The above-mentioned grease chamber 60 of the ring-type faced of outer side surface.
Left side crankshaft journal 10j
1Diameter bigger than the diameter of outward extending crankshaft journal outside axial region 10e thus, therefore, at this left side crankshaft journal 10j
1And between the axial region 10e of the crankshaft journal outside, be formed with circular step portion 67 in the face of above-mentioned grease chamber 60.At this left side crankshaft journal 10j
1Outer circumferential face on, be provided with a pair of from above-mentioned stepped part 67 to left crankshaft journal 10j
1The above-mentioned oil groove 59 of root, these oil grooves 59 are inlet towards the opening end of stepped part 67.
Also have, on bent axle 10, with left crankshaft journal 10j
1Be formed with circular recess 70 on the outer side surface of the crankshaft web 10w of homonymy, on this recess 70, be pressed into around left crankshaft journal 10j
1Ring-type side plate 71, between this side plate 71 and crankshaft web 10w, delimit ring-type and flat above-mentioned oil sump 61, offer the outlet of above-mentioned oil groove 59 at the radially inner side of this oil sump 61, offer the hollow portion 62 of crankpin 10p in the centre.
As shown in Figure 6, on preceding casing 6a, cylinder body 7 and cylinder cap 8, be provided with from the 2nd of above-mentioned supply oil circuit 58 branches supply with oil circuit 58 ', make it pass through the 2nd and supply with oil circuit 58 ' to above-mentioned slotted link mechanism 74 fuel feeding.
Below this embodiment's effect is described.
When carrying out the installation of oil pump 32 and its driving system, at first on the preceding casing 6a before connecting rear box 6b, oil pump 32 is inserted into Transmission Room 18, this oil pump 32 is installed in the regulation place of Transmission Room 18 inwalls by the bolt 43 that is inserted into Transmission Room 18 by mounting hole 50 from auxiliary engine room 19.
Then in the Transmission Room 18 of preceding casing 6a, insert large diameter driven gear 48, make itself and oil pump 32 adjacent.Pass through mounting hole 50 from auxiliary engine room 19 1 sides then, the pump shaft 46 that will possess connecting pin 68 successively intercalation in the attachment hole 44 of the bearing hole 45 of the wheel hub 48a of driven gear 48, pump case 40 and pump rotor 41, simultaneously, connecting pin 68 is fastened in the keyway 69 of above-mentioned wheel hub 48a.
At last, the setting-in periphery is equipped with the lid 52 of Sealing 53 on the mounting hole 50 of next door 20, makes its bearing hole 51 be entrenched in the outer end of pump shaft 46, and flange 54 is connected on the outer side surface in next door 20.Under this state, elastomeric cap 56 is covered front end at the pillar 55 of lid 52.
So, even the diameter of the mounting hole 50 in next door 20 is littler than driven gear 48, also can be very simply on the inwall of narrow Transmission Room 18 oil pump 32 being installed and on pump shaft 46, being connected driven gear 48.Therefore, can cause that than driven gear 48 little mounting holes 50 intensity in next door 20 reduces by diameter hardly, so help weight reduction.
And, owing to insert moving axially of the pump shaft 46 that leads on driven gear 48, pump case 40 and pump rotor 41 by bag shape bearing hole 51 restrictions that are entrenched in lid 52 on the mounting hole 50, do not deviate from special-purpose parts such as clasp so do not need to prevent pump shaft 46, can make simple in structure.
In addition, because the bearing hole 51 of lid 52 with the bearing hole 45 of pump case 40, at the two-side supporting pump shaft 46 of driven gear 48, so can make its supporting reliable, helps the raising of the durability of oil pump 32.
Then, if the whole motor of assembling, the stator 22s that then is fixed on the generator 22 on auxiliary engine room 19 inwalls of crankcase 6 withstands on its interior edge face the front end of the pillar 55 of lid 52 by elastomeric cap 56, therefore, because lid 52 is fixed on and makes flange 54 be connected to the assigned position of next door 20 outer side surfaces, so do not need special-purpose retaining elements such as bolt, can make its fixed structure simple.On the other hand, the actuation gear 47 that is fixed on the bent axle 10 is meshed with driven gear 48, but makes oil pump 32 be in drive condition.
In motor 4 operation process, the actuation gear 47 driving driven gears 48 that rotate with bent axle 10 slow down it, and the rotor 41 that therefore makes oil pump 32 is with suitable speed rotation.So, the oil pump 32 of running sucks the lubricant oil 30 of oil sump 29 by oil purifier 31, be sent to hollow portion 62 and the nozzle opening 63 of supplying with oil circuit 58, grease chamber 60, oil groove 59, crankpin 10p then, therefore, 60 can lubricate the left crankshaft journal 10j of supporting in the grease chamber
1Ball bearing 15
1, can lubricate the big end 12b inner peripheral surface of its outer circumferential face, needle bearing 64 and connecting rod 12 at crankpin 10p.
At this moment, because the inlet of above-mentioned oil groove 59 is opened in large diameter left crankshaft journal 10j
1And in the circular step portion 67 between the axial region 10e of the crankshaft journal of the minor diameter outside, so the lubricant oil of grease chamber 60 can need not be revolted centrifugal force well-behavedly by oil groove 59, can be reposefully to crankpin 10p fuel feeding.
, be used to be communicated with ball bearing 15
1Between the grease chamber 60 in the outside and the oil sump 61 in the crankshaft web 10w outside, be formed at left crankshaft journal 10j
1Oil groove 59 on the outer circumferential face can process it at an easy rate.Especially with left crankshaft journal 10j
1The situation of parallel axes ground configuration oil groove 59 under, can when crankshaft forging 10, it be formed simultaneously, so do not need special groove manufacturing procedure,, can reduce cost so can improve the productibility of bent axle 10.
In addition, because left crankshaft journal 10j
1The oil groove 59 of outer circumferential face is configured in left relatively crankshaft journal 10j
1Rotating center, phase place and crankpin 10p roughly stagger on 90 ° the position, so when piston 11 arrives upper dead center and lower dead centre, oil groove 59 is positioned on the plane with the orthogonal axe of cylinder barrel 7a, therefore, has avoided being added in left crankshaft journal 10j from the big normal load of piston 11
1 Oil groove 59 near these phenomenons, can prevent the left crankshaft journal 10j that causes by oil groove 59
1Intensity reduce.
The present invention is not limited to the foregoing description, can carry out various change designs in the scope that does not break away from its aim.For example, split away off from mounting hole 50, can adopt electric motor and other subsidiary engine to replace the stator 22s of generator 22 for preventing lid 52.
As previously discussed, according to the 1st feature of the present invention, the oil pump device of engine is being sent out One side of the crankcase of motivation is formed with Transmission Room and the subsidiary engine adjacent with the outside of this Transmission Room Oil pump is installed at the inwall of above-mentioned Transmission Room in the chamber, and configuration is by this oil pump in above-mentioned Transmission Room Pump shaft connect, diameter than the big driven gear of oil pump and be used for driving this driven gear, Be fixed on the driven wheel on the bent axle, the next door between above-mentioned Transmission Room and auxiliary engine room arranges Can carry out from auxiliary engine room one side the installing hole of the dismounting operation of above-mentioned oil pump, should with the lid sealing Installing hole makes pump case and pump rotor and above-mentioned passive that above-mentioned pump shaft can relatively above-mentioned oil pump Gear is extracted and is inserted, and on the other hand, makes the diameter of above-mentioned installing hole littler than above-mentioned driven gear, Lid by the sealing installing hole limits moving axially of above-mentioned pump shaft, so even be arranged on lid On the installing hole diameter littler than driven gear, also can be very simply to the Transmission Room peace of narrow width Oil loading pump with on pump shaft, connect driven gear, therefore because the diameter of installing hole is little, can be really Protect the intensity in above-mentioned next door, can weight reduction. And, owing to limit the axial of pump shaft by lid Mobile, so do not need the parts peculiar that prevents that pump shaft from deviating from, also can make simple in structure.
In addition, according to the 2nd feature of the present invention, owing to rotation is set freely at above-mentioned lid The dead eye of ground supporting said pump axle, thus the dead eye of lid with the dead eye of pump case, At the two-side supporting pump shaft of driven gear, can make its supporting reliable, can help the oil pump durability Raising.
According to the 3rd feature of the present invention, owing to make it by the subsidiary engine resistance that is fixed on above-mentioned auxiliary engine room End above-mentioned lid and from above-mentioned installing hole, deviate from, thus special-purpose retaining element need not be set, just Can stop lid from installing hole, to be deviate from, therefore can make structure simpler.
Claims (3)
1. the oil pump device of a motor, side at the crankcase (6) of motor (4), be formed with Transmission Room (18) and the auxiliary engine room (19) adjacent with this Transmission Room (18), oil pump (32) is installed on the inwall of above-mentioned Transmission Room (18), in above-mentioned Transmission Room (18), dispose the pump shaft (46) that connects this oil pump (32), and diameter is than the big driven gear (48) of oil pump (32) and be used to drive this driven gear (48), be fixed on the actuation gear (47) on the bent axle (10), the mounting hole (50) that can carry out the dismounting operation of above-mentioned oil pump (32) from auxiliary engine room (19) one sides is set on the next door (20) between above-mentioned Transmission Room (18) and the auxiliary engine room (19), seal this mounting hole (50) with lid (52), it is characterized in that:
Above-mentioned pump shaft (46) can above-mentioned relatively oil pump (32) pump case (40) and pump rotor (41) and above-mentioned driven gear (48) extract and insert, on the other hand, the diameter of above-mentioned mounting hole (50) is littler than above-mentioned driven gear (48), limits moving axially of above-mentioned pump shaft (46) by its lid (52) of sealing.
2. the oil pump device of motor as claimed in claim 1 is characterized in that:
The rotatable bearing hole (51) that supports above-mentioned pump shaft (46) freely is set on above-mentioned lid (52).
3. the oil pump device of motor as claimed in claim 1 or 2 is characterized in that:
Stop above-mentioned lid (52) from above-mentioned mounting hole (50), to be deviate from by the subsidiary engine (22) that is fixed on the above-mentioned auxiliary engine room (19).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12175399A JP4233680B2 (en) | 1999-04-28 | 1999-04-28 | Engine oil pump equipment |
| JP121753/1999 | 1999-04-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1271805A true CN1271805A (en) | 2000-11-01 |
| CN1106500C CN1106500C (en) | 2003-04-23 |
Family
ID=14819043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00106902 Expired - Fee Related CN1106500C (en) | 1999-04-28 | 2000-04-21 | Oil pump device of engine |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4233680B2 (en) |
| CN (1) | CN1106500C (en) |
| IT (1) | IT1320293B1 (en) |
| TW (1) | TW486546B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429633A (en) * | 2015-03-31 | 2017-12-01 | 本田技研工业株式会社 | Internal combustion engine |
| CN111173737A (en) * | 2019-08-30 | 2020-05-19 | 重庆红宇精密工业有限责任公司 | Integrated oil pumping device |
| CN112983622A (en) * | 2019-12-13 | 2021-06-18 | 九号智能(常州)科技有限公司 | All-terrain vehicle and engine thereof |
-
1999
- 1999-04-28 JP JP12175399A patent/JP4233680B2/en not_active Expired - Fee Related
-
2000
- 2000-04-20 IT IT2000TO000375A patent/IT1320293B1/en active
- 2000-04-21 CN CN 00106902 patent/CN1106500C/en not_active Expired - Fee Related
- 2000-04-27 TW TW89107972A patent/TW486546B/en not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429633A (en) * | 2015-03-31 | 2017-12-01 | 本田技研工业株式会社 | Internal combustion engine |
| CN107429633B (en) * | 2015-03-31 | 2019-07-05 | 本田技研工业株式会社 | Internal combustion engine |
| CN111173737A (en) * | 2019-08-30 | 2020-05-19 | 重庆红宇精密工业有限责任公司 | Integrated oil pumping device |
| CN112983622A (en) * | 2019-12-13 | 2021-06-18 | 九号智能(常州)科技有限公司 | All-terrain vehicle and engine thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4233680B2 (en) | 2009-03-04 |
| CN1106500C (en) | 2003-04-23 |
| ITTO20000375A1 (en) | 2001-10-20 |
| JP2000310189A (en) | 2000-11-07 |
| IT1320293B1 (en) | 2003-11-26 |
| ITTO20000375A0 (en) | 2000-04-20 |
| TW486546B (en) | 2002-05-11 |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030423 Termination date: 20120421 |