CN203585200U - Shafting device for automobile engine crankshaft and automobile engine - Google Patents
Shafting device for automobile engine crankshaft and automobile engine Download PDFInfo
- Publication number
- CN203585200U CN203585200U CN201320663917.0U CN201320663917U CN203585200U CN 203585200 U CN203585200 U CN 203585200U CN 201320663917 U CN201320663917 U CN 201320663917U CN 203585200 U CN203585200 U CN 203585200U
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- crankshaft
- automobile engine
- oil pump
- timing gear
- damper pulley
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- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000010030 laminating Methods 0.000 claims description 2
- 230000010354 integration Effects 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 3
- 230000035939 shock Effects 0.000 abstract 3
- 239000003921 oil Substances 0.000 description 51
- 235000008526 Galium odoratum Nutrition 0.000 description 8
- 244000258271 Galium odoratum Species 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 244000186140 Asperula odorata Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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Abstract
The utility model provides a shafting device for an automobile engine crankshaft and an automobile engine. The shafting device comprises a crankshaft front end, an oil pump driving sprocket, a crankshaft timing gear, a crankshaft rotating speed signal wheel, a shock absorption belt pulley and a pressing mechanism, wherein a step surface is formed on the crankshaft front end; a long key groove that extends from the front end surface of the crankshaft front end to the step surface in the axial direction is formed in the crankshaft front end; a positioning long key is arranged in the long key groove and is in interference fit with the long key groove; a first key groove, a second key groove and a third key groove that are in clearance fit with the positioning long key are formed in the axial holes of the crankshaft timing gear, the crankshaft rotating speed signal wheel and the shock absorption belt pulley respectively; the oil pump driving sprocket, the crankshaft timing gear, the crankshaft rotating speed signal wheel and the shock absorption belt pulley are sequentially distributed on the crankshaft front end and are compressed on the step surface through the pressing mechanism. According to the utility model, the shafting device for the automobile engine crankshaft is high in integration degree and compact in structural design.
Description
Technical field
The utility model belongs to technical field of automobile engine, and particularly relating to a kind of automobile engine crankshaft axle is device and motor car engine.
Background technique
Bent axle is one of three large main parts size of engine body, and Crankshaft fastens the setting type of component and the layout of motor complete machine body structure is closely bound up.It is device that Crankshaft system forms Crankshaft with assembling component thereon.
Existing a kind of Crankshaft is device, as shown in Figure 1, crankshaft front oil seal-mounting is directly contained in crankshaft front end 10(crankshaft front oil seal-mounting figure and does not indicate, wherein the mounting point of crankshaft front oil seal-mounting is the Front oil seal fitting surface 20 in Fig. 1), damper pulley 30 is arranged in crankshaft front oil seal-mounting outside, fastening by bolt 40, timing gear 50(is circumferentially spacing by woodruff key 60) by damper pulley 30, compressed, on the inboard thin axle journal of front end, be pressed with oil pump installation sleeve 70(circumferentially spacing by woodruff key 80), speed of crankshaft signal wheel 90 is integrated on damper pulley 30.
Crankshaft shown in Fig. 1 is device and has following shortcoming:
(1) speed of crankshaft signal wheel is arranged on damper pulley, is exposed to external engine, affected by external environment condition dirt, is unfavorable for sensor collecting crankshaft tach signal; If change speed of crankshaft signal wheel for stamping press workpiece,, in order to guarantee the precision of signal teeth of speed of crankshaft signal wheel, processing cost is relatively high.
(2) crankshaft front end is for spacing damper pulley, rotor of engine oil pump installation sleeve and timing gear, two woodruff keies have been utilized, correspondingly need to process two Woodruff key slots and keywayss at crankshaft front end, two woodruff keies cause number of spare parts to increase, and the difficulty of processing of two Woodruff key slots and keywayss is relatively large.
(3) Crankshaft is that the part of device is more, and level of integration is not high, arranges compactly not, and how mating parts easily cause tolerance of size accumulation to increase, to Assembly of the parts, vibrations control and noise control unfavorable.
Model utility content
Technical problem to be solved in the utility model be for existing automobile engine crankshaft axle be apparatus parts more, arrange compactness and the large defect of difficulty of processing not, it is device that a kind of automobile engine crankshaft axle is provided.
It is as follows that the utility model solves the problems of the technologies described above adopted technological scheme:
It is device that a kind of automobile engine crankshaft axle is provided, comprise crankshaft front end, oil pump driving sprocket wheel, crankshaft timing gear, speed of crankshaft signal wheel, damper pulley and hold-down mechanism, on described crankshaft front end, be formed with step surface, described crankshaft front end offers front-end face from described crankshaft front end to the axially extended long keyway of described step surface, in described long keyway, be provided with the long key in location of interference fit with it, described crankshaft timing gear, in the axis hole of speed of crankshaft signal wheel and damper pulley, be respectively arranged with the first keyway with the long key Spielpassung in described location, the second keyway and key-groove, described oil pump driving sprocket wheel, crankshaft timing gear, speed of crankshaft signal wheel and damper pulley are arranged successively and are pressed on described step surface by described hold-down mechanism on described crankshaft front end.
Further, the center portion of described speed of crankshaft signal wheel is provided with axially extended boss laterally, described boss and the laminating of described crankshaft timing gear.
Further, described speed of crankshaft signal wheel has 58 signal teeth.
Further, described oil pump driving sprocket wheel, crankshaft timing gear and speed of crankshaft signal wheel are arranged in engine timing shell.
Further, described automobile engine crankshaft axle is that device also comprises crankshaft front oil seal-mounting, and described crankshaft front oil seal-mounting is fitted on engine timing shell, and the lip of described crankshaft front oil seal-mounting coordinates with the hub spindle of described damper pulley.
Further, in the axis hole of described oil pump driving sprocket wheel, be provided with quadruple linkage groove.
Further, the long key Spielpassung in described quadruple linkage groove and described location.
Further, described crankshaft timing gear is identical with described oil pump chain sprocket structure.
Further, described hold-down mechanism comprises in the front-end face of described crankshaft front end the axially extended screw-threaded counterbore of step surface direction described in mind-set and the damper pulley bolt with described screw-threaded counterbore screw-thread fit, described damper pulley is provided with outside-supporting platform, described damper pulley bolt is provided with compression platform, described compression platform is pressed on described outside-supporting platform, with this, described oil pump driving sprocket wheel, crankshaft timing gear, speed of crankshaft signal wheel and damper pulley is pressed between described compression platform and described step surface.
According to automobile engine crankshaft axle of the present utility model, it is device, by the Spielpassung of the long key in described location and the first keyway, the second keyway and key-groove, realized circumferentially spacing at crankshaft front end of described crankshaft timing gear, speed of crankshaft signal wheel and damper pulley, again by the effect of hold-down mechanism, crankshaft timing gear is pressed on oil pump driving sprocket wheel on step surface, realizes circumferentially spacing at crankshaft front end of oil pump driving sprocket wheel; Described oil pump driving sprocket wheel, crankshaft timing gear, speed of crankshaft signal wheel and damper pulley are arranged successively and are pressed on described step surface by described hold-down mechanism on described crankshaft front end simultaneously, have realized the axial limiting of described oil pump driving sprocket wheel, crankshaft timing gear, speed of crankshaft signal wheel and damper pulley; Thereby finally realized described oil pump driving sprocket wheel, crankshaft timing gear, speed of crankshaft signal wheel and these four wheels of damper pulley location at crankshaft front end; With respect to prior art, integrated degree is high, structural design is compact, is conducive to save installing space; And only need a long key in location, reduced part use, and assembling is more simple; In addition, crankshaft front end only need process a long keyway, greatly reduces difficulty of processing, has reduced processing cost.
In addition, the utility model also provides a kind of motor, and it comprises that above-mentioned automobile engine crankshaft axle is device.
Accompanying drawing explanation
Fig. 1 is the structural representation that existing automobile engine crankshaft axle is device;
Fig. 2 is that the automobile engine crankshaft axle that the utility model one embodiment provides is the structural representation of device;
Fig. 3 is that the automobile engine crankshaft axle that the utility model one embodiment provides is the exploded view of device;
Fig. 4 is that the automobile engine crankshaft axle that another embodiment of the utility model provides is the structural representation of device.
Reference character in Figure of description is as follows:
10, crankshaft front end; 20, Front oil seal fitting surface; 30, damper pulley; 40, bolt; 50, timing gear; 60, woodruff key; 70, oil pump installation sleeve; 80, woodruff key; 90, speed of crankshaft signal wheel; 1, crankshaft front end; 11, step surface; 12, front-end face; 13, long keyway; 2, oil pump driving sprocket wheel; 21, quadruple linkage groove; 3, crankshaft timing gear; 31, the first keyway; 4, speed of crankshaft signal wheel; 41, the second keyway; 42, boss; 5, damper pulley; 51, key-groove; 52, outside-supporting platform; 53, hub spindle; 6, hold-down mechanism; 61, screw-threaded counterbore; 62, damper pulley bolt; 621, compress platform; 7, the long key in location; 8, crankshaft front oil seal-mounting.
Embodiment
Clearer for technical problem, technological scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Please with reference to Fig. 2 and Fig. 3, the automobile engine crankshaft axle that provides that the utility model one embodiment provides is device, comprise crankshaft front end 1, oil pump driving sprocket wheel 2, crankshaft timing gear 3, speed of crankshaft signal wheel 4, damper pulley 5 and hold-down mechanism 6, on described crankshaft front end 1, be formed with step surface 11, described crankshaft front end 11 offers front-end face 12 from described crankshaft front end to the axially extended long keyway 13 of described step surface 11, in described long keyway 13, be provided with the long key 7 in location of interference fit with it, described crankshaft timing gear 3, in the axis hole of speed of crankshaft signal wheel 4 and damper pulley 5, be respectively arranged with the first keyway 31 with long key 13 Spielpassung in described location, the second keyway 41 and key-groove 51, described oil pump driving sprocket wheel 2, crankshaft timing gear 3, speed of crankshaft signal wheel 4 and damper pulley 5 are arranged successively and are pressed on described step surface 11 by described hold-down mechanism 6 on described crankshaft front end 1.
In the present embodiment, described hold-down mechanism 6 comprises in the front-end face 12 of described crankshaft front end the step surface axially extended screw-threaded counterbore 61 of 11 direction described in mind-set and the damper pulley bolt 62 with described screw-threaded counterbore 61 screw-thread fit, described damper pulley 5 is provided with outside-supporting platform 52, described damper pulley bolt 62 is provided with and compresses platform 621, described compression platform 621 is pressed on described outside-supporting platform 52, with this by described oil pump driving sprocket wheel 2, crankshaft timing gear 3, speed of crankshaft signal wheel 4 and damper pulley 5 are pressed between described compression platform 621 and described step surface 11, realize axially locating.Certainly, hold-down mechanism 6 is not limited to this, can be also for example to comprise from the outward extending double-screw bolt of front-end face 12 of crankshaft front end and the nut being threaded with double-screw bolt, nut is pressed on damper pulley, with this, described oil pump driving sprocket wheel 2, crankshaft timing gear 3, speed of crankshaft signal wheel 4 and damper pulley 5 are pressed between described compression platform 621 and described step surface 11, realize axially locating.Other form that compressing structure can also capable field technique personnel can obtain.
In the present embodiment, the center portion of described speed of crankshaft signal wheel 4 is provided with axially extended boss 42 laterally, and described boss 42 is fitted with described crankshaft timing gear 3.With this, guarantee that the signal teeth on speed of crankshaft signal wheel 4 does not produce interference with the chain being arranged on crankshaft timing gear under motion state.
In the present embodiment, preferentially, described speed of crankshaft signal wheel 4 has 58 signal teeth, and makes by ferrous based powder metallurgical technique, like this, has not only guaranteed signal teeth precision but also lowered manufacture cost.
In the present embodiment, preferentially, described oil pump driving sprocket wheel 2, crankshaft timing gear 3 and speed of crankshaft signal wheel 4 are arranged in engine timing shell (not indicating in figure).Like this, speed of crankshaft signal wheel 4 is not affected by external environment condition dirt can, can guarantee the stability that tach signal gathers, and has improved integrated degree simultaneously.
In the present embodiment, described automobile engine crankshaft axle is that device also comprises crankshaft front oil seal-mounting 8, and described crankshaft front oil seal-mounting 8 is fitted on engine timing shell, and the lip of described crankshaft front oil seal-mounting 8 coordinates with the hub spindle 53 of damper pulley 5.Crankshaft front oil seal-mounting 8 directly installs on the hub spindle 53 of damper pulley 5, can simplify like this assemble flow.
In the present embodiment, in the axis hole of described oil pump driving sprocket wheel 2, be provided with quadruple linkage groove 21.But quadruple linkage groove 21 does not coordinate with the long key 7 in location after having assembled, due to when assembling, be first to locate long key 7 and long keyway 13 interference fit, then oil pump driving sprocket wheel 2 is pushed, so just offer quadruple linkage groove 21.Certainly, if change assemble sequence, oil pump driving sprocket wheel 2 also can not established quadruple linkage groove 21, like this, when assembling, after first oil pump driving sprocket wheel 2 being pushed, then will locate long key 7 and long keyway 13 interference fit.
Because the power that oil pump driving sprocket wheel 2 is suffered is little, in the present embodiment, oil pump driving sprocket wheel 2 circumferentially spacing, realizes by the frictional force of itself and crankshaft timing gear 3 and step surface 11.Circumferentially spacing with respect to carrying out with the long key 7 in location, the benefit of doing is like this that the long key 7 of long keyway 13 and location does not need to extend in the quadruple linkage groove 21 of described oil pump driving sprocket wheel 2, has reduced like this difficulty of processing and manufacture cost.
In the present embodiment, quadruple linkage groove 21 is set in the axis hole of described oil pump driving sprocket wheel 2 and also has another benefit, can make described crankshaft timing gear 3 and oil pump sprocket wheel 2 adopt two parts of same structure, therefore can save die sinking cost.
The automobile engine crankshaft axle that the utility model above-described embodiment provides is device, by the Spielpassung of the long key in described location and the first keyway, the second keyway and key-groove, realized circumferentially spacing at crankshaft front end of described crankshaft timing gear, speed of crankshaft signal wheel and damper pulley, again by the effect of hold-down mechanism, crankshaft timing gear is pressed on oil pump driving sprocket wheel on step surface, realizes circumferentially spacing at crankshaft front end of oil pump driving sprocket wheel; Described oil pump driving sprocket wheel, crankshaft timing gear, speed of crankshaft signal wheel and damper pulley are arranged successively and are pressed on described step surface by described hold-down mechanism on described crankshaft front end simultaneously, have realized the axial limiting of described oil pump driving sprocket wheel, crankshaft timing gear, speed of crankshaft signal wheel and damper pulley; Thereby finally realized described oil pump driving sprocket wheel, crankshaft timing gear, speed of crankshaft signal wheel and these four wheels of damper pulley location at crankshaft front end; With respect to prior art, there is following beneficial effect: oil pump driving sprocket wheel, crankshaft timing gear, speed of crankshaft signal wheel and damper pulley assemble successively, and by one with crankshaft front end on the long key in location of long keyway interference fit carry out circumferentially spacing simultaneously, and oil pump driving sprocket wheel, crankshaft timing gear, speed of crankshaft signal wheel and damper pulley are carried out to axial compression by a hold-down mechanism simultaneously, with respect to prior art, integrated degree is high, structural design is compact, is conducive to save installing space; And only need a long key in location, reduced part use, and assembling is more simple; In addition, crankshaft front end only need process a long keyway, greatly reduces difficulty of processing, has reduced processing cost.
As shown in Figure 4, the automobile engine crankshaft axle providing for another embodiment of the present invention is device, be with Fig. 2 and difference embodiment illustrated in fig. 3, the long key 7 in described location extends axially to the quadruple linkage groove 21 of described oil pump driving sprocket wheel 2, described quadruple linkage groove 21 and long key 7 Spielpassung in described location.
Embodiment shown in Fig. 4, the long key 7 of long keyway 13 and location correspondingly all needs lengthening, can increase like this manufacture cost, still, oil pump driving sprocket wheel 2 circumferential spacing more firm.
In addition, the utility model also provides a kind of motor, and it comprises that above-mentioned automobile engine crankshaft axle is device.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. an automobile engine crankshaft axle is device, it is characterized in that, comprise crankshaft front end, oil pump driving sprocket wheel, crankshaft timing gear, speed of crankshaft signal wheel, damper pulley and hold-down mechanism, on described crankshaft front end, be formed with step surface, described crankshaft front end offers front-end face from described crankshaft front end to the axially extended long keyway of described step surface, in described long keyway, be provided with the long key in location of interference fit with it, described crankshaft timing gear, in the axis hole of speed of crankshaft signal wheel and damper pulley, be respectively arranged with the first keyway with the long key Spielpassung in described location, the second keyway and key-groove, described oil pump driving sprocket wheel, crankshaft timing gear, speed of crankshaft signal wheel and damper pulley are arranged successively and are pressed on described step surface by described hold-down mechanism on described crankshaft front end.
2. automobile engine crankshaft axle according to claim 1 is device, it is characterized in that, the center portion of described speed of crankshaft signal wheel is provided with axially extended boss laterally, described boss and the laminating of described crankshaft timing gear.
3. automobile engine crankshaft axle according to claim 1 is device, it is characterized in that, described speed of crankshaft signal wheel has 58 signal teeth.
4. automobile engine crankshaft axle according to claim 1 is device, it is characterized in that, described oil pump driving sprocket wheel, crankshaft timing gear and speed of crankshaft signal wheel are arranged in engine timing shell.
5. automobile engine crankshaft axle according to claim 1 is device, it is characterized in that, described automobile engine crankshaft axle is that device also comprises crankshaft front oil seal-mounting, described crankshaft front oil seal-mounting is fitted on engine timing shell, and the lip of described crankshaft front oil seal-mounting coordinates with the hub spindle of described damper pulley.
6. according to the automobile engine crankshaft axle described in claim 1 to 5 any one, be device, it is characterized in that, in the axis hole of described oil pump driving sprocket wheel, be provided with quadruple linkage groove.
7. automobile engine crankshaft axle according to claim 6 is device, it is characterized in that the long key Spielpassung in described quadruple linkage groove and described location.
8. automobile engine crankshaft axle according to claim 6 is device, it is characterized in that, described crankshaft timing gear is identical with described oil pump chain sprocket structure.
9. automobile engine crankshaft axle according to claim 1 is device, it is characterized in that, described hold-down mechanism comprises in the front-end face of described crankshaft front end the axially extended screw-threaded counterbore of step surface direction described in mind-set and the damper pulley bolt with described screw-threaded counterbore screw-thread fit, described damper pulley is provided with outside-supporting platform, described damper pulley bolt is provided with compression platform, described compression platform is pressed on described outside-supporting platform, with this by described oil pump driving sprocket wheel, crankshaft timing gear, speed of crankshaft signal wheel and damper pulley are pressed between described compression platform and described step surface.
10. a motor car engine, is characterized in that, comprises that the automobile engine crankshaft axle described in claim 1 to 9 any one is device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663917.0U CN203585200U (en) | 2013-10-25 | 2013-10-25 | Shafting device for automobile engine crankshaft and automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663917.0U CN203585200U (en) | 2013-10-25 | 2013-10-25 | Shafting device for automobile engine crankshaft and automobile engine |
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| Publication Number | Publication Date |
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| CN203585200U true CN203585200U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320663917.0U Expired - Lifetime CN203585200U (en) | 2013-10-25 | 2013-10-25 | Shafting device for automobile engine crankshaft and automobile engine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179569A (en) * | 2014-08-09 | 2014-12-03 | 广西玉柴机器股份有限公司 | Integrated multifunctional crank shaft belt pulley structure |
| CN104279299A (en) * | 2014-09-22 | 2015-01-14 | 广西玉柴机器股份有限公司 | Multifunctional timing gear |
| CN104690174A (en) * | 2015-01-20 | 2015-06-10 | 芜湖金源机械制造有限公司 | Assembly method and assembly mold of engine crankshaft damping belt wheel and signal gear |
| CN106443044A (en) * | 2016-11-08 | 2017-02-22 | 天津雷沃发动机有限公司 | Rotating speed signal sensor assembly structure for engine |
| CN109026245A (en) * | 2018-08-03 | 2018-12-18 | 重庆隆鑫发动机有限公司 | Engine |
| CN109026252A (en) * | 2018-08-03 | 2018-12-18 | 重庆隆鑫发动机有限公司 | Engine air distribution system and engine |
| CN110410209A (en) * | 2019-08-15 | 2019-11-05 | 重庆小康工业集团股份有限公司 | Connection structure and engine for engine |
-
2013
- 2013-10-25 CN CN201320663917.0U patent/CN203585200U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179569A (en) * | 2014-08-09 | 2014-12-03 | 广西玉柴机器股份有限公司 | Integrated multifunctional crank shaft belt pulley structure |
| CN104279299A (en) * | 2014-09-22 | 2015-01-14 | 广西玉柴机器股份有限公司 | Multifunctional timing gear |
| CN104690174A (en) * | 2015-01-20 | 2015-06-10 | 芜湖金源机械制造有限公司 | Assembly method and assembly mold of engine crankshaft damping belt wheel and signal gear |
| CN104690174B (en) * | 2015-01-20 | 2016-08-24 | 芜湖金源机械制造有限公司 | The assembly method of engine crankshaft damper pulley and signal gear and assembling mould |
| CN106443044A (en) * | 2016-11-08 | 2017-02-22 | 天津雷沃发动机有限公司 | Rotating speed signal sensor assembly structure for engine |
| CN109026245A (en) * | 2018-08-03 | 2018-12-18 | 重庆隆鑫发动机有限公司 | Engine |
| CN109026252A (en) * | 2018-08-03 | 2018-12-18 | 重庆隆鑫发动机有限公司 | Engine air distribution system and engine |
| CN109026252B (en) * | 2018-08-03 | 2024-04-26 | 重庆隆鑫发动机有限公司 | Engine gas distribution system and engine |
| CN110410209A (en) * | 2019-08-15 | 2019-11-05 | 重庆小康工业集团股份有限公司 | Connection structure and engine for engine |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Jian Inventor after: Wu Shaojie Inventor after: Huang Chuhua Inventor after: Shao Fake Inventor before: Wu Shaojie Inventor before: Huang Chuhua Inventor before: Shao Fake |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WU SHAOJIE HUANG CHUHUA SHAO FAKE TO: WU JIAN WU SHAOJIE HUANG CHUHUA SHAO FAKE |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |