JP2010013986A - Terminal protective member for electric compressor - Google Patents

Terminal protective member for electric compressor Download PDF

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Publication number
JP2010013986A
JP2010013986A JP2008173570A JP2008173570A JP2010013986A JP 2010013986 A JP2010013986 A JP 2010013986A JP 2008173570 A JP2008173570 A JP 2008173570A JP 2008173570 A JP2008173570 A JP 2008173570A JP 2010013986 A JP2010013986 A JP 2010013986A
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terminal
fence
engagement hole
electric compressor
projection
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JP2008173570A
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Japanese (ja)
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Masahide Kobayashi
正英 小林
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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Priority to JP2008173570A priority Critical patent/JP2010013986A/en
Priority to CN200910150993XA priority patent/CN101619717B/en
Publication of JP2010013986A publication Critical patent/JP2010013986A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal protective member for an electric compressor capable of securing fitting of a projection of a terminal cover to the engagement hole of a lock piece of a terminal fence and preventing large looseness after fitting, even when some dimension error occurs. <P>SOLUTION: In the terminal protective member for the electric compressor, a terminal 2 mounted to a lid body 1a of a closed container 1 is protected by the protective member 10 comprising the terminal fence 4 fixed to the lid body 1a and the terminal cover 5 fitted to the terminal fence 4. The projection 8 formed on the terminal cover 5 to be fitted to the engagement hole 7a of the lock piece 7 formed on the terminal fence 4 has a downward inclined face 8a formed in the upper end part and an upward inclined face 8b formed in the lower end part. Even if some dimension error is generated in a positional relationship between the engagement hole 7a of the lock piece 7 and the projection 8, since the error is absorbed by the downward inclined face 8a of the projection 8, fitting of the projection 8a can be secured and large looseness after fitting can be prevented. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、電動圧縮機に係るもので、特に密閉容器に装着したターミナルを保護するための保護部材の改良に関する。   The present invention relates to an electric compressor, and more particularly to an improvement in a protective member for protecting a terminal mounted on an airtight container.

一般に、電動圧縮機は密閉容器内に電動機構部と、この電動機構部により作動される圧縮機構部とが収納され、当該密閉容器にはターミナルが装着され、このターミナルを介して前記電動機構部に通電して圧縮機構部を作動させる。そして、導入管により圧縮機構部に気体（通常は冷媒）を導入して圧縮すると共に、密閉容器内に吐出された高圧気体を吐出管により外部に取り出す。   In general, an electric compressor has an electric mechanism portion and a compression mechanism portion operated by the electric mechanism portion housed in a sealed container, and a terminal is attached to the airtight container, and the electric mechanism portion is connected via the terminal. To actuate the compression mechanism. Then, a gas (usually a refrigerant) is introduced into the compression mechanism by the introduction pipe and compressed, and the high-pressure gas discharged into the sealed container is taken out to the outside through the discharge pipe.

前記ターミナルは、図４に示すように密閉容器１の外部に位置する外部電極２ａと、電源側の複数本のコード３の先端に取り付けられたコネクタ３ａとが電気接続されると共に、図示は省略したが密閉容器１の内部に位置する内部電極と、前記電動機構部の固定子（ステータ）とがリード線により電気接続される。   As shown in FIG. 4, the terminal is electrically connected to an external electrode 2a located outside the sealed container 1 and a connector 3a attached to the tip of a plurality of cords 3 on the power supply side, and is not shown in the figure. However, the internal electrode located inside the sealed container 1 and the stator (stator) of the electric mechanism portion are electrically connected by the lead wire.

このターミナル２は、外部電極２ａと電源側コード３のコネクタ３ａとの接続部が露出してしまう。このようにターミナル２の電気接続部が外部に露出していると、塵や埃が付着し或は水分が付着して絶縁性の低下や通電不良等を引き起こすことがある。   In the terminal 2, the connection portion between the external electrode 2 a and the connector 3 a of the power supply side cord 3 is exposed. When the electrical connection portion of the terminal 2 is exposed to the outside as described above, dust or dirt may adhere or moisture may adhere to cause a decrease in insulation property or poor conduction.

このような事態に対処するために、ターミナルの外部電気接続部を保護するようにした従来技術が特許文献１、２等に開示されている。
特開２００８−７５５４７ 特開２００６−２２００００ In order to cope with such a situation, the prior art which protected the external electrical connection part of the terminal is disclosed by patent document 1, 2 grade | etc.,.
JP2008-75547 JP2006-220,000

図４のように、ターミナル２の外部電気接続部を保護する保護部材が、ターミナルフェンス４と、このターミナルフェンス４に落とし込んで嵌着するターミナルカバー５とから成る場合には、ターミナルフェンス４の側部に形成されて複数の受止片６の内側に、ターミナルカバー５の側壁部分を嵌め込むと共に、ターミナルフェンス４の端部に対設された係止片７の係合孔７ａに、ターミナルカバー５の端壁下部に設けられた突起８を嵌合係止する構成である。   As shown in FIG. 4, when the protective member that protects the external electrical connection portion of the terminal 2 is composed of the terminal fence 4 and the terminal cover 5 that is dropped into and fitted into the terminal fence 4, the terminal fence 4 side The side wall portion of the terminal cover 5 is fitted inside the plurality of receiving pieces 6 and the terminal cover is inserted into the engagement hole 7a of the locking piece 7 provided at the end of the terminal fence 4. 5 is configured to fit and lock the protrusion 8 provided at the lower end of the end wall 5.

この場合、図５（ｂ）に示すようにターミナルカバー５の突起８が、ターミナルフェンス４の係止片７の係合孔７ａに嵌合した際に、ターミナルカバー５の下縁がターミナルフェンス４の基板４ａの上面に当接する。   In this case, when the projection 8 of the terminal cover 5 is fitted into the engagement hole 7a of the locking piece 7 of the terminal fence 4 as shown in FIG. It abuts on the upper surface of the substrate 4a.

しかしながら、図５（ａ）のようにターミナルカバー５の下縁から突起８の上縁までの距離Ａと、ターミナルフェンス４の基板４ａの上面から係合孔７ａの上縁までの距離Ｂとの寸法管理が難しく、図６のように距離Ａが距離Ｂより少し大きくて誤差Ｃが生じると、突起８が係止片７の係合孔７ａに嵌合しないうちにターミナルカバー５の下縁がターミナルフェンス４の基板４ａの上面に当接してしまい、それ以上下降できないため突起８が係合孔７ａに嵌合しないといった不具合が発生する。上記距離Ａを距離Ｂよりかなり小さい寸法に設定すれば係合孔７ａに対する突起８の不嵌合を防ぐことはできるが、ターミナルカバー５の嵌着後にガタツキが生じ易くなってしまう。   However, as shown in FIG. 5A, the distance A from the lower edge of the terminal cover 5 to the upper edge of the protrusion 8 and the distance B from the upper surface of the substrate 4a of the terminal fence 4 to the upper edge of the engagement hole 7a. If the distance A is slightly larger than the distance B and an error C occurs as shown in FIG. 6, the lower edge of the terminal cover 5 is moved before the protrusion 8 is fitted into the engagement hole 7a of the engagement piece 7 as shown in FIG. The terminal fence 4 comes into contact with the upper surface of the substrate 4a and cannot be lowered any further, so that a problem that the protrusion 8 does not fit into the engagement hole 7a occurs. If the distance A is set to a dimension that is considerably smaller than the distance B, it is possible to prevent the protrusion 8 from being disengaged from the engagement hole 7a, but rattling is likely to occur after the terminal cover 5 is attached.

本発明は、このような従来技術における不具合を解消するためになされ、多少の寸法誤差が生じても、ターミナルフェンスの係止片の係合孔に対して、ターミナルカバーの突起を確実に嵌合できると共に、嵌着後に大きなガタツキが生じないようにした電動圧縮機のターミナル保護部材を提供することを目的とする。   The present invention has been made to solve such problems in the prior art, and even if a slight dimensional error occurs, the projection of the terminal cover is securely fitted into the engagement hole of the locking piece of the terminal fence. An object of the present invention is to provide a terminal protection member for an electric compressor which can be made and does not cause large rattling after fitting.

上記の目的を達成するための手段として、本発明は、電動機構部と、この電動機構部により作動される圧縮機構部とを収納した密閉容器に、前記電動機構部へ通電するためのターミナルが装着され、当該ターミナルの外部電気接続部を保護するためにターミナルフェンスと、このターミナルフェンスに落とし込んで嵌着するターミナルカバーとからなる保護部材が取り付けられた電動圧縮機において、前記ターミナルフェンスに形成された係止片の係合孔に嵌合すべく前記ターミナルカバーに形成された突起は、その上端部が下向きに傾斜する傾斜面に形成されると共に、下端部が上向きに傾斜する傾斜面に形成されている電動圧縮機のターミナル保護部材を特徴とする。   As a means for achieving the above object, according to the present invention, there is provided a terminal for energizing the electric mechanism unit in a sealed container containing the electric mechanism unit and a compression mechanism unit operated by the electric mechanism unit. In an electric compressor mounted with a protective member comprising a terminal fence and a terminal cover that fits into the terminal fence to protect the external electrical connection portion of the terminal, the electric compressor is formed on the terminal fence. The protrusion formed on the terminal cover to be fitted into the engagement hole of the locking piece is formed on an inclined surface whose upper end portion is inclined downward, and is formed on an inclined surface whose lower end portion is inclined upward. The terminal protection member of the electric compressor currently used is characterized.

本発明によれば、ターミナルフェンスと、このターミナルフェンスに落とし込んで嵌着するターミナルカバーとから成る保護部材が取り付けられた電動圧縮機において、前記ターミナルフェンスに形成された係止片の係合孔に嵌合すべく前記ターミナルカバーに形成された突起は、その上端部が下向きに傾斜する傾斜面に形成されると共に、下端部が上向きに傾斜する傾斜面に形成されているため、係止片の係合孔の位置に対してターミナルカバーの突起の位置が多少ずれたとしても、その寸法誤差を上端部の下向き傾斜面が吸収することができる。これにより、ターミナルフェンスの係止片の係合孔に対してターミナルカバーの突起の嵌合を確保できると共に、嵌着後に大きなガタツキが生じることもない。   According to the present invention, in the electric compressor to which a protective member composed of a terminal fence and a terminal cover that is dropped and fitted into the terminal fence is attached, the engagement hole of the locking piece formed in the terminal fence is provided. The protrusion formed on the terminal cover to be fitted is formed on an inclined surface whose upper end portion is inclined downward, and is formed on an inclined surface whose lower end portion is inclined upward. Even if the position of the protrusion of the terminal cover slightly deviates from the position of the engagement hole, the downward inclined surface of the upper end can absorb the dimensional error. Thereby, it is possible to secure the fitting of the projection of the terminal cover with respect to the engaging hole of the locking piece of the terminal fence, and there is no large backlash after the fitting.

次に、本発明の実施形態を添付図面に基づいて説明する。
図１は、本発明に係る電動圧縮機のターミナル保護部材の実施形態を示す概略分解斜視図である。図４に示す従来例と実質的に同じ部材は前記と同じ符号を付けて説明する。 Next, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a schematic exploded perspective view showing an embodiment of a terminal protection member of an electric compressor according to the present invention. Components that are substantially the same as those of the conventional example shown in FIG.

図１において、１は密閉容器であり、この密閉容器１の蓋体１ａの頂部にターミナル２が貫通して固定されている。このターミナル２の外部電極２ａには電源側の複数本のコード３の先端に取り付けられたコネクタ３ａが電気接続されると共に、図示は省略したが密閉容器１の内部に位置する内部電極には、密閉容器１内に収納されている電動機構部の固定子（ステータ）に通電するためのリード線が電気接続されている。尚、９はターミナルカバー５内に収納されるリレー部品である。   In FIG. 1, reference numeral 1 denotes an airtight container, and a terminal 2 penetrates and is fixed to the top of the lid 1 a of the airtight container 1. The external electrode 2a of the terminal 2 is electrically connected to a connector 3a attached to the ends of a plurality of cords 3 on the power supply side, and although not shown, the internal electrode located inside the sealed container 1 includes Lead wires for energizing the stator (stator) of the electric mechanism unit housed in the hermetic container 1 are electrically connected. Reference numeral 9 denotes a relay component housed in the terminal cover 5.

４は剛板製のターミナルフェンスであり、基板４ａの側部に複数の受止片６を立ち上げて設けると共に、基板４ａの端部には係止片７を立ち上げて対設し、この係止片７には係合孔７ａをそれぞれ形成してある。   4 is a rigid terminal fence, and a plurality of receiving pieces 6 are provided at the side of the substrate 4a, and a locking piece 7 is provided at the end of the substrate 4a. Engagement holes 7a are formed in the locking pieces 7, respectively.

合成樹脂製のターミナルカバー５は、下方に開口する略ボックス形を呈しており、前記ターミナルフェンス４に落とし込んで着脱可能に嵌着することにより保護部材１０（図２）を構成し、この保護部材１０によりターミナル２の外部電気接続部を被覆して保護するようにしてある。   The synthetic resin terminal cover 5 has a substantially box shape that opens downward, and is dropped into the terminal fence 4 and detachably fitted to form a protective member 10 (FIG. 2). 10 covers and protects the external electrical connection of the terminal 2.

このターミナルカバー５は、前記ターミナルフェンス４の複数の受止片４の内側に嵌合係止する側壁部分は、それぞれ外側に突起部５ａが形成されると共にこの突起部５ａの下方に傾斜面５ｂが内向きに形成されている。この場合、突起部５ａも下方に行くにつれて内側に傾斜する傾斜面に形成されている。これはターミナルカバー５の側壁部分をターミナルフェンス４の受止片６の内側に嵌入し易くし、且つ受止片６との間に隙間が生じないようにするためである。   The terminal cover 5 has a protruding portion 5a formed on the outer side of each side wall portion of the terminal fence 4 that is fitted and locked to the inner side of the plurality of receiving pieces 4, and an inclined surface 5b below the protruding portion 5a. Is formed inward. In this case, the protrusion 5a is also formed on an inclined surface that is inclined inward as it goes downward. This is to make it easier to fit the side wall portion of the terminal cover 5 inside the receiving piece 6 of the terminal fence 4 and to prevent a gap from being formed between the terminal cover 5 and the receiving piece 6.

又、ターミナルカバー５の対向する端壁の外側下部には、前記係止片７の係合孔７ａにそれぞれ係合する突起８が設けられている。この突起８は、図３（ａ）に示すように上端部が下向きに傾斜する傾斜面８ａに形成されると共に、下端部が従来と同じく上向きに傾斜する傾斜面８ｂに形成されている。   Protrusions 8 that engage with the engaging holes 7 a of the locking pieces 7 are provided on the outer lower portions of the opposing end walls of the terminal cover 5. As shown in FIG. 3A, the protrusion 8 is formed on an inclined surface 8a whose upper end portion is inclined downward, and is formed on an inclined surface 8b whose lower end portion is inclined upward as in the prior art.

更に、図１のようにターミナルカバー５の一方の側部にはコード引き出し孔１１が設けられ、このコード引き出し孔１１に対向させてコード受け片１２がほぼＬ字形に突出して設けられ、当該コード受け片１２の上端縁に凹部１２ａが形成されている。   Further, as shown in FIG. 1, a cord lead-out hole 11 is provided on one side portion of the terminal cover 5, and a cord receiving piece 12 is provided so as to protrude from the cord lead-out hole 11 in a substantially L shape. A recess 12 a is formed at the upper edge of the receiving piece 12.

上記コード引き出し孔１１の周縁部にはひさし状の突起１３が設けられており、この突起１３のうち前記コード受け片１２の先端部１２ｂ側に対向する下端部に、前記コード３等の迂回を容易にするための湾曲部１３ａが切り欠きにより形成されている。又、コード受け片１２の先端部１２ｂも、コード３等の迂回を容易にするため湾曲状に形成して角張らないようにしてある。   An eaves-like projection 13 is provided on the peripheral edge of the cord lead-out hole 11, and the cord 3 or the like is bypassed at a lower end portion of the projection 13 facing the tip portion 12 b side of the cord receiving piece 12. A curved portion 13a for facilitating is formed by a notch. Further, the distal end portion 12b of the cord receiving piece 12 is also formed in a curved shape so as not to be angular in order to facilitate the detouring of the cord 3 or the like.

本実施形態に係る保護部材１０は上記のように構成され、前記ターミナルカバー５をターミナルフェンス４に落とし込んで嵌着する際に、図３（ｂ）に示すように突起８は下端部の傾斜面８ｂが係止片７の係合孔７ａの下縁に係止し、上端部の傾斜面８ａが係合孔７ａの上縁に係止する。このため、前記のような寸法誤差Ｃが生じても、この寸法誤差Ｃは
突起８の上端部の傾斜面８ａにより吸収され、係合孔７ａに対して突起８を確実に嵌合させることができる。 The protective member 10 according to the present embodiment is configured as described above, and when the terminal cover 5 is dropped into the terminal fence 4 and fitted, the protrusion 8 is an inclined surface at the lower end as shown in FIG. 8b is engaged with the lower edge of the engagement hole 7a of the engagement piece 7, and the inclined surface 8a at the upper end is engaged with the upper edge of the engagement hole 7a. For this reason, even if the dimensional error C as described above occurs, the dimensional error C is absorbed by the inclined surface 8a at the upper end of the protrusion 8, and the protrusion 8 can be reliably fitted into the engagement hole 7a. it can.

これにより、従来のように寸法誤差Ｃによって突起８が係止片７の係合孔７ａに嵌合しないといった不具合が生じることはない。又、ターミナルカバー５の下縁は、ターミナルフェンス４の基板４ａの上面に当接するか、当該上面との間に僅かな隙間が生じるだけであるから、ターミナルカバー５の嵌着後に大きなガタツキが生じることもない。   Thereby, the problem that the protrusion 8 does not fit into the engagement hole 7a of the locking piece 7 due to the dimensional error C as in the conventional case does not occur. Moreover, since the lower edge of the terminal cover 5 abuts on the upper surface of the substrate 4a of the terminal fence 4 or only a slight gap is formed between the upper surface and the terminal cover 5, a large backlash occurs after the terminal cover 5 is fitted. There is nothing.

ターミナルカバー５の嵌着後に、前記電源側の３本のコード３と、リレー部品９に接続された２本のコード１４をまとめて一束にした状態で、前記コード引き出し孔１１から外部に引き出されたコード群１５を、コード受け片１２の先端部１２ｂを迂回させて上端縁の凹部１２ａに受止させる。これはコード群１５と密閉容器１の蓋体１ａとの接触を避けるためである。電動圧縮機の使用時においては、密閉容器１が高温になるためコード群１５を高熱から保護する必要がある。   After the terminal cover 5 is fitted, the three cords 3 on the power supply side and the two cords 14 connected to the relay component 9 are bundled together and pulled out from the cord lead-out hole 11. The cord group 15 thus received is received by the recess 12a at the upper edge while bypassing the tip 12b of the cord receiving piece 12. This is to avoid contact between the cord group 15 and the lid 1a of the sealed container 1. When the electric compressor is used, it is necessary to protect the cord group 15 from high heat because the sealed container 1 becomes hot.

本発明は、電動圧縮機のターミナル保護部材として広く適用することができる。   The present invention can be widely applied as a terminal protection member of an electric compressor.

本発明に係る電動圧縮機のターミナル保護部材の実施形態を示す概略分解斜視図である。It is a general | schematic disassembled perspective view which shows embodiment of the terminal protection member of the electric compressor which concerns on this invention. 本発明に係る電動圧縮機のターミナル保護部材を取り付けた状態を示す概略縦断面図である。It is a schematic longitudinal cross-sectional view which shows the state which attached the terminal protection member of the electric compressor which concerns on this invention. （ａ）は本発明に係る電動圧縮機のターミナル保護部材におけるターミナルカバーの突起を示す概略縦断面図、（ｂ）はターミナルカバーの突起とターミナルフェンスの係止片の係合孔との嵌合状態を示す概略縦断面図である。(A) is a schematic longitudinal cross-sectional view which shows the protrusion of a terminal cover in the terminal protection member of the electric compressor which concerns on this invention, (b) is fitting with the protrusion of a terminal cover, and the engagement hole of the locking piece of a terminal fence It is a schematic longitudinal cross-sectional view which shows a state. 従来例における電動圧縮機のターミナル保護部材を示す概略分解斜視図である。It is a schematic exploded perspective view which shows the terminal protection member of the electric compressor in a prior art example. 従来例のターミナル保護部材において、ターミナルカバーの突起とターミナルフェンスの係止片の係合孔との嵌合状態を示すもので、（ａ）は嵌合前の状態、（ｂ）は嵌合後の状態をそれぞれ示す概略縦断面図である。In the terminal protection member of the conventional example, the fitting state of the protrusion of the terminal cover and the engaging hole of the locking piece of the terminal fence is shown, (a) is a state before fitting, (b) is after fitting. It is a schematic longitudinal cross-sectional view which shows each of these states. 従来例のターミナル保護部材において、寸法誤差のためターミナルカバーの突起とターミナルフェンスの係止片の係合孔との不嵌合状態を示す概略縦断面図である。In the terminal protection member of a prior art example, it is a schematic longitudinal cross-sectional view which shows the non-fitting state of the protrusion of a terminal cover, and the engagement hole of the locking piece of a terminal fence because of a dimension error.

符号の説明Explanation of symbols

１ 密閉容器
２ ターミナル
３ コード
４ ターミナルフェンス
５ ターミナルカバー
６ 受止片
７ 係止片
７ａ 係合孔
８ 突起
８ａ、８ｂ 傾斜面
９ リレー部品
１０ 保護部材
１１ コード引き出し孔
１２ コード受け片
１３ ひさし状の突起
１４ コード
１５ コード群 DESCRIPTION OF SYMBOLS 1 Airtight container 2 Terminal 3 Cord 4 Terminal fence 5 Terminal cover 6 Receiving piece 7 Locking piece 7a Engagement hole 8 Protrusion 8a, 8b Inclined surface 9 Relay component 10 Protection member 11 Cord extraction hole 12 Cord receiving piece 13 Eave-shaped Projection 14 Code 15 Code group

Claims (1)

電動機構部と、この電動機構部により作動される圧縮機構部とを収納した密閉容器に、前記電動機構部へ通電するためのターミナルが装着され、当該ターミナルの外部電気接続部を保護するためにターミナルフェンスと、このターミナルフェンスに落とし込んで嵌着するターミナルカバーとからなる保護部材が取り付けられた電動圧縮機において、前記ターミナルフェンスに形成された係止片の係合孔に嵌合すべく前記ターミナルカバーに形成された突起は、その上端部が下向きに傾斜する傾斜面に形成されると共に、下端部が上向きに傾斜する傾斜面に形成されていることを特徴とする電動圧縮機のターミナル保護部材。   In order to protect the external electrical connection portion of the terminal, a sealed container containing the electric mechanism portion and the compression mechanism portion operated by the electric mechanism portion is mounted with a terminal for energizing the electric mechanism portion. In the electric compressor to which a protective member comprising a terminal fence and a terminal cover which is dropped into and fitted into the terminal fence is attached, the terminal to be fitted into an engagement hole of a locking piece formed in the terminal fence The protrusion formed on the cover is formed on an inclined surface whose upper end portion is inclined downward, and is formed on an inclined surface whose lower end portion is inclined upward. .
JP2008173570A 2008-07-02 2008-07-02 Terminal protective member for electric compressor Pending JP2010013986A (en)

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CN200910150993XA CN101619717B (en) 2008-07-02 2009-07-01 Terminal protecting component of electric compressor

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CN101619717A (en) 2010-01-06

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