CN102840214A - Bolt group - Google Patents
Bolt group Download PDFInfo
- Publication number
- CN102840214A CN102840214A CN2011101676520A CN201110167652A CN102840214A CN 102840214 A CN102840214 A CN 102840214A CN 2011101676520 A CN2011101676520 A CN 2011101676520A CN 201110167652 A CN201110167652 A CN 201110167652A CN 102840214 A CN102840214 A CN 102840214A
- Authority
- CN
- China
- Prior art keywords
- bolt
- nut
- adapter sleeve
- ratchet
- group
- 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.)
- Granted
Links
- 230000008719 thickening Effects 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 2
- 241001133184 Colletotrichum agaves Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dowels (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Connection Of Plates (AREA)
Abstract
The invention relates to the technical fields of an automobile and machinery and discloses a bolt group. The bolt group comprises a bolt and a nut; a fastening sleeve is sleeved on a screw of the bolt; the fastening sleeve is arranged between the head part of the bolt and the nut; a group of one-way ratchets are respectively arranged on the opposite end faces of the fastening sleeve and the nut; two groups of ratchets are mutually meshed, and the loose directions of the ratchets on the end face of the nut are the same as the rotating direction of the nut fastened oppositely to the bolt. According to the bolt group, one matched fastening sleeve is added on the basis of a common bolt group; the fastening sleeve is matched with a flange nut, and the attached surface adopts a ratchet-type mounting surface, so that the nut reversely rotates difficultly after being forwards fastened by the nut. Therefore, the anti-loosing performance of the nut is greatly strengthened; the security of mounting mechanical parts is improved; the overall bolt group is simple in structure, convenient to mount and dismantle and strong in applicability.
Description
Technical field
The present invention relates to automobile, field of mechanical technique, particularly relate to a kind of anti-loose clamping bolt group.
Background technique
In automobile production and the fastening process of machinery, it is fastening to adopt plain bolt, nut and elastic washer to carry out usually, in a period of time of short-term; Realization connecting piece that can be good fastening, but As time goes on, Tightening moment is decayed gradually; And along with the continuous vibration of vibration source; Cause the attaching nut to occur getting loose, nut finally occurs and come off, and then produce potential faults.
Summary of the invention
The technical problem that (one) will solve
The technical problem that the present invention will solve is how to avoid the get loose phenomenon of nut in fastening process.
(2) technological scheme
In order to solve the problems of the technologies described above, the present invention provides a kind of bolt group, comprises screw bolt and nut; Nut is connected through screw-threaded coupling with bolt; Be arranged with an adapter sleeve on the screw rod of bolt, said adapter sleeve radially is respectively arranged with one group of unidirectional ratchet on said adapter sleeve and the nut opposing end faces between bolt head and nut; Two groups of ratchets are meshed, and the sense of rotation of the relative bolt locking with nut of the direction that gets loose of ratchet is identical on the said nut end face.
Wherein, said adapter sleeve comprises sleeve pipe and ratchet base; Said ratchet base is arranged on sleeve pipe one end, and said unidirectional ratchet is set on the one of which side end face.
Wherein, Screw rod near said bolt head is provided with one deck thickening part; Offer several bolt keyways on the thickening part vertically, the said sleeve pipe the other end is provided with several adapter sleeve keyways, and said sleeve pipe and bolt are through said adapter sleeve keyway and the engaging of bolt keyway.
Wherein, said several bolt keyways are evenly distributed on the said thickening part.
Wherein, said adapter sleeve keyway and bolt keyway number equate.
Wherein, also comprise elastic ring, be set on the said screw rod, contact with said ratchet base opposite side end face.
Wherein, said ratchet base cross section is circular, and its internal diameter equates with casing inner diameter.
Wherein, said elastic ring is spring or the packing ring for being processed by elastic material.
Wherein, the external diameter of said thickening part equates with the external diameter of said sleeve pipe.
Wherein, said nut is a flange nut, and the radius that said flange nut has the end face of unidirectional ratchet equates with the radius that said adapter sleeve has the end face of unidirectional ratchet.
(3) beneficial effect
The bolt group that technique scheme provided; On the basis of plain bolt group, increased an adapter sleeve that cooperates with it, adapter sleeve cooperates with flange nut, and both faying surfaces adopt the Retchet gear type attachment face; Thereby make nut by forward fastening after; Counter-rotating difficulty, thereby the anti-loosening property of stiffnut have greatly improved the Security that mechanical parts are installed; And a whole set of bolt group is simple in structure, easy installation and removal, and applicability is strong.
Description of drawings
Fig. 1 is the structural representation of the bolt group of the embodiment of the invention;
Fig. 2 is the structural representation of bolt in the embodiment of the invention;
Fig. 3 is the structural representation of nut in the embodiment of the invention;
Fig. 4 is the structural representation of adapter sleeve in the embodiment of the invention;
Fig. 5 is to use the bolt group of the embodiment of the invention to carry out the fixing structural representation of connecting plate.
Wherein, 1: bolt; 1-1: bolt head; 1-2: screw rod; 1-3: bolt keyway; 1-4: thickening part; 2: nut; 2-1: nut ratchet face; 3: adapter sleeve; 3-1: sleeve pipe; 3-2: ratchet base; 3-3: adapter sleeve keyway; 3-4: adapter sleeve ratchet face; 4: elastic ring; 5: the first connecting plates; 6: the second connecting plates.
Embodiment
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention describes in further detail.Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Fig. 1 shows the structural representation of the bolt group of the embodiment of the invention, and it comprises bolt 1 and nut 2, and bolt 1 adopts screw-threaded coupling commonly used to be connected with nut 2.In order to prevent getting loose between bolt 1 and the nut 2; The bolt group of present embodiment has increased anti-loose adapter sleeve 3; Adapter sleeve 3 is arranged between bolt head 1-1 and the nut 2; Radially be respectively arranged with one group of unidirectional ratchet on adapter sleeve 3 and nut 2 opposing end faces, two groups of ratchets are meshed, and the direction that gets loose of ratchet is identical with the sense of rotation of nut 2 relative bolts 1 lockings on nut 2 end faces.
As shown in Figure 2; The bolt 1 of present embodiment comprises bolt head 1-1 and screw rod 1-2; Screw rod 1-2 away from bolt head 1-1 is provided with the screw thread (not shown), is used for realizing being threaded with nut 2, is provided with several bolt keyways 1-3 near the screw rod 1-2 of bolt head 1-1.The setting of bolt keyway 1-3 can be through being provided with one deck thickening part 1-4 on the screw rod 1-2 near bolt head 1-1,1-3 evenly is opened on the 1-4 of thickening part vertically with several bolt keyways.
As shown in Figure 3, the nut 2 of present embodiment is selected flange nut for use, on flange nut and adapter sleeve 3 opposing end faces, one group of unidirectional ratchet is set, and forms nut ratchet face 2-1.Because the center of nut 2 is a tapped hole, so the shape of cross section of nut ratchet face 2-1 is circular, its internal diameter equates with the internal diameter of tapped hole.
Corresponding with nut 2 structures with Fig. 2 and bolt shown in Figure 31, Fig. 4 shows the structural representation of the adapter sleeve 3 of present embodiment, and it comprises sleeve pipe 3-1 and ratchet base 3-2; Ratchet base 3-2 is arranged on sleeve pipe 3-1 one end; Be that ratchet base 3-2 extends radially outward in sleeve pipe 3-1 end, form annular base, the internal diameter of ratchet base 3-2 equates with the internal diameter of sleeve pipe 3-1; The external diameter of ratchet base 3-2 equates with the external diameter of nut ratchet face 2-1; One group of unidirectional ratchet is set on ratchet base 3-2 end face, forms adapter sleeve ratchet face 3-4, make nut ratchet face 2-1 and adapter sleeve ratchet face 3-4 mesh.
The other end at sleeve pipe 3-1 is provided with several adapter sleeve keyways 3-3, and the number of adapter sleeve keyway 3-3 and bolt keyway 1-3 and width are identical respectively, and the internal diameter of sleeve pipe 3-1 is not less than the external diameter of screw rod 1-2, makes sleeve pipe 3-1 can be enclosed within on the screw rod 1-2.The staggered engaging of adapter sleeve keyway 3-3 and bolt keyway 1-3 makes adapter sleeve 3 and bolt 1 not have axially rotation.Adapter sleeve keyway 3-3 and bolt keyway 1-3 are when staggered engaging; Should there be the gap vertically; Rationally select for use different adapter sleeve 3, bolt 1 to assemble according to the different-thickness of fastening object, can not make adapter sleeve keyway 3-3 that bolt keyway 1-3 dieback can't be realized the fastening of fastening object.
In the present embodiment, the external diameter of sleeve pipe 3-1 should be set to equate that after being convenient to adapter sleeve 3 and bolt 1 engaging through keyway, the fastening screw of the bolt group of formation diameter on each section is consistent with the external diameter of thickening part 1-4.
In the present embodiment, adapter sleeve ratchet face 3-4 is meshed with nut ratchet face 2-1, and the direction that gets loose of the last ratchet of nut ratchet face 2-1 mainly contains two kinds with the identical situation of sense of rotation of nut 2 relative bolts 1 lockings.First kind of situation is: nut 2 relative bolts 1 are turned clockwise, realize the locking of nut 2 relative bolts 1, this moment is adapter sleeve ratchet face 3-4 relatively; The direction that gets loose of nut ratchet face 2-1 also is clockwise direction; Engagement between nut 2 and adapter sleeve 3, realize fastening counterclockwise after, nut 2 difficulty that turns clockwise; Nut 2 self produces the resistance that turns clockwise, thereby has realized that nut anti-looseness takes off function.Second kind of situation is identical with the principle of first kind of situation, and the difference part is that the locking direction of nut 2 relative bolts 1 is different, and nut ratchet face 2-1 does not repeat them here with respect to the direction difference that gets loose of adapter sleeve ratchet face 3-4.
In the present embodiment; In order to realize the tight engagement of nut ratchet face 2-1 and adapter sleeve ratchet face 3-4; Prevent getting loose between nut ratchet face 2-1 and the adapter sleeve ratchet face 3-4, on screw rod 1-2, also be arranged with elastic ring 4, elastic ring 4 contacts with the opposite side end face of the ratchet base 3-2 of adapter sleeve 3; When the bolt group that is about to present embodiment was used for fastened object fastening, elastic ring 4 was between fastened object and adapter sleeve 3.The effect of elastic ring 4 is that adapter sleeve 3 is produced the axial elasticity power, and adapter sleeve 3 and nut 2 are closely cooperated, so elastic ring 4 can be selected spring for use or the packing ring processed by elastic material etc.
The fastening process that the bolt group of the use embodiment of the invention is carried out two connecting plates is following: at first; After bolt 1 passed first connecting plate 5 and second connecting plate 6; On screw rod 1-2, put elastic ring 4; On bolt 1, load onto adapter sleeve 3 then, make adapter sleeve keyway 3-3 and bolt keyway 1-3 realize that keyway cooperates; Then, band upper flange nut 2 carries out fastening, along with the increase of Tightening moment; Elastic ring 4 deforms; Generation to elastic force, makes the adapter sleeve 3 and the ratchet face of flange nut 2 fit tightly along bolt axis, along with flange nut 3 is tightened towards the rotation of locking direction; Reverse ratchet on the adapter sleeve 3 makes that nut can't counterrotating, thereby makes flange nut 2 to get loose.
Can find out by above embodiment; The embodiment of the invention has increased an adapter sleeve that cooperates with it on the basis of plain bolt group, adapter sleeve cooperates with flange nut, and both faying surfaces adopt the Retchet gear type attachment face; Thereby make nut by forward fastening after; Counter-rotating difficulty, thereby the anti-loosening property of stiffnut have greatly improved the Security that mechanical parts are installed; And a whole set of bolt group is simple in structure, easy installation and removal, and applicability is strong.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from know-why of the present invention; Can also make some improvement and replacement, these improvement and replacement also should be regarded as protection scope of the present invention.
Claims (10)
1. the bolt group comprises screw bolt and nut, and nut is connected through screw-threaded coupling with bolt; It is characterized in that; Be arranged with an adapter sleeve on the screw rod of bolt, said adapter sleeve radially is respectively arranged with one group of unidirectional ratchet on said adapter sleeve and the nut opposing end faces between bolt head and nut; Two groups of ratchets are meshed, and the sense of rotation of the relative bolt locking with nut of the direction that gets loose of ratchet is identical on the said nut end face.
2. bolt group as claimed in claim 1 is characterized in that said adapter sleeve comprises sleeve pipe and ratchet base; Said ratchet base is arranged on sleeve pipe one end, and said unidirectional ratchet is set on the one of which side end face.
3. bolt group as claimed in claim 2; It is characterized in that; Screw rod near said bolt head is provided with one deck thickening part; Offer several bolt keyways on the thickening part vertically, the said sleeve pipe the other end is provided with several adapter sleeve keyways, and said sleeve pipe and bolt are through said adapter sleeve keyway and the engaging of bolt keyway.
4. bolt group as claimed in claim 3 is characterized in that, said several bolt keyways are evenly distributed on the said thickening part.
5. bolt group as claimed in claim 3 is characterized in that, said adapter sleeve keyway and bolt keyway number equate.
6. bolt group as claimed in claim 2 is characterized in that, also comprises elastic ring, is set on the said screw rod, contacts with said ratchet base opposite side end face.
7. bolt group as claimed in claim 2 is characterized in that, said ratchet base cross section is circular, and its internal diameter equates with casing inner diameter.
8. bolt group as claimed in claim 6 is characterized in that, said elastic ring is spring or the packing ring for being processed by elastic material.
9. bolt group as claimed in claim 3 is characterized in that, the external diameter of said thickening part equates with the external diameter of said sleeve pipe.
10. like arbitrary described bolt group among the claim 1-9, it is characterized in that said nut is a flange nut, the radius that said flange nut has the end face of unidirectional ratchet equates with the radius that said adapter sleeve has the end face of unidirectional ratchet.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110167652.0A CN102840214B (en) | 2011-06-21 | 2011-06-21 | Bolt group |
| PCT/CN2012/075115 WO2012174951A1 (en) | 2011-06-21 | 2012-05-07 | Bolt set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110167652.0A CN102840214B (en) | 2011-06-21 | 2011-06-21 | Bolt group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102840214A true CN102840214A (en) | 2012-12-26 |
| CN102840214B CN102840214B (en) | 2015-04-22 |
Family
ID=47367865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110167652.0A Active CN102840214B (en) | 2011-06-21 | 2011-06-21 | Bolt group |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102840214B (en) |
| WO (1) | WO2012174951A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295587A (en) * | 2014-09-17 | 2015-01-21 | 平湖市当湖街道飞天人机械图文设计服务部 | Automobile chassis connecting piece and thermal processing technology thereof |
| CN105003519A (en) * | 2015-08-04 | 2015-10-28 | 申书达 | Detachable looseness-preventing bolt or screw assembly |
| CN107299927A (en) * | 2017-06-15 | 2017-10-27 | 宁波信泰机械有限公司 | A kind of self-locking fixed mechanism of luggage carrier |
| CN108757698A (en) * | 2018-09-05 | 2018-11-06 | 合肥惠科金扬科技有限公司 | Loosing-proof device |
| CN108825633A (en) * | 2018-07-10 | 2018-11-16 | 顾钰锋 | Self-tightening screw |
| CN109396218A (en) * | 2018-12-28 | 2019-03-01 | 宁波沃力弹簧有限公司 | The reinforced steel bar straightening and cutting machine with hydraulic pressure of automobile fitting part rapidoprint |
| CN111114374A (en) * | 2018-11-01 | 2020-05-08 | 北京新能源汽车股份有限公司 | Locking mechanism, battery pack, battery locking device, vehicle and battery replacement method |
| CN114087271A (en) * | 2021-11-13 | 2022-02-25 | 中车大连机车车辆有限公司 | Positioning device for locomotive gear box and positioning and indirect anti-loosening method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161814A (en) * | 2013-04-11 | 2013-06-19 | 上海理工大学 | Pre-tightening-force-adjustable anti-loosening rotating shaft mechanism |
| CN109458390B (en) * | 2018-12-20 | 2023-09-26 | 浙江安盛汽车零部件有限公司 | Split type fastening nut |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2019483A (en) * | 1978-04-19 | 1979-10-31 | Messerschmitt Boelkow Blohm | King Pin Coupling |
| US4971501A (en) * | 1984-03-16 | 1990-11-20 | Hi-Shear Corporation | Self-locking, releasable lock nut |
| EP0833067A1 (en) * | 1996-09-26 | 1998-04-01 | Andreas Ortmann | Non-removable threaded joint |
| CN2592316Y (en) * | 2003-01-11 | 2003-12-17 | 刘太恒 | Milling clamping-head and its spanner |
| CN201306354Y (en) * | 2008-12-05 | 2009-09-09 | 西安曼海特工业技术有限公司 | Looseness preventing bolt capable of being repeatedly used |
| CN101871480A (en) * | 2009-04-22 | 2010-10-27 | 王国仲 | Fixing device |
| CN201661583U (en) * | 2010-03-31 | 2010-12-01 | 青岛科技大学 | Thread connection anti-looseness device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2342159Y (en) * | 1996-02-14 | 1999-10-06 | 景同祥 | Anti-loose device for nut |
| CN2429678Y (en) * | 1999-10-11 | 2001-05-09 | 张佩师 | Cup-shaped security loosen-proof screw assembly |
| CN201027769Y (en) * | 2007-05-10 | 2008-02-27 | 刘胜忠 | Check bolt and nut component |
-
2011
- 2011-06-21 CN CN201110167652.0A patent/CN102840214B/en active Active
-
2012
- 2012-05-07 WO PCT/CN2012/075115 patent/WO2012174951A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2019483A (en) * | 1978-04-19 | 1979-10-31 | Messerschmitt Boelkow Blohm | King Pin Coupling |
| US4971501A (en) * | 1984-03-16 | 1990-11-20 | Hi-Shear Corporation | Self-locking, releasable lock nut |
| EP0833067A1 (en) * | 1996-09-26 | 1998-04-01 | Andreas Ortmann | Non-removable threaded joint |
| CN2592316Y (en) * | 2003-01-11 | 2003-12-17 | 刘太恒 | Milling clamping-head and its spanner |
| CN201306354Y (en) * | 2008-12-05 | 2009-09-09 | 西安曼海特工业技术有限公司 | Looseness preventing bolt capable of being repeatedly used |
| CN101871480A (en) * | 2009-04-22 | 2010-10-27 | 王国仲 | Fixing device |
| CN201661583U (en) * | 2010-03-31 | 2010-12-01 | 青岛科技大学 | Thread connection anti-looseness device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295587A (en) * | 2014-09-17 | 2015-01-21 | 平湖市当湖街道飞天人机械图文设计服务部 | Automobile chassis connecting piece and thermal processing technology thereof |
| CN105003519A (en) * | 2015-08-04 | 2015-10-28 | 申书达 | Detachable looseness-preventing bolt or screw assembly |
| CN107299927A (en) * | 2017-06-15 | 2017-10-27 | 宁波信泰机械有限公司 | A kind of self-locking fixed mechanism of luggage carrier |
| CN108825633A (en) * | 2018-07-10 | 2018-11-16 | 顾钰锋 | Self-tightening screw |
| CN108825633B (en) * | 2018-07-10 | 2020-06-02 | 东莞市品固精密五金制品有限公司 | Self-tightening screw |
| CN108757698A (en) * | 2018-09-05 | 2018-11-06 | 合肥惠科金扬科技有限公司 | Loosing-proof device |
| CN108757698B (en) * | 2018-09-05 | 2024-04-12 | 合肥惠科金扬科技有限公司 | Anti-loosening device |
| CN111114374A (en) * | 2018-11-01 | 2020-05-08 | 北京新能源汽车股份有限公司 | Locking mechanism, battery pack, battery locking device, vehicle and battery replacement method |
| CN109396218A (en) * | 2018-12-28 | 2019-03-01 | 宁波沃力弹簧有限公司 | The reinforced steel bar straightening and cutting machine with hydraulic pressure of automobile fitting part rapidoprint |
| CN114087271A (en) * | 2021-11-13 | 2022-02-25 | 中车大连机车车辆有限公司 | Positioning device for locomotive gear box and positioning and indirect anti-loosening method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012174951A1 (en) | 2012-12-27 |
| CN102840214B (en) | 2015-04-22 |
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