JP2003021290A - Connection structure of resin pipe and tank - Google Patents
Connection structure of resin pipe and tankInfo
- Publication number
- JP2003021290A JP2003021290A JP2001209899A JP2001209899A JP2003021290A JP 2003021290 A JP2003021290 A JP 2003021290A JP 2001209899 A JP2001209899 A JP 2001209899A JP 2001209899 A JP2001209899 A JP 2001209899A JP 2003021290 A JP2003021290 A JP 2003021290A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- resin pipe
- pipe
- connection
- cup
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0246—Arrangements for connecting header boxes with flow lines
- F28F9/0256—Arrangements for coupling connectors with flow lines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
- F28F21/067—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0246—Arrangements for connecting header boxes with flow lines
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、熱交換器の金属製
タンクに樹脂製パイプを接続する接続構造に関する。
【０００２】
【従来の技術】金属製タンクと樹脂製パイプとの接続構
造は、樹脂製タンクとチューブプレートとの接続構造を
利用することができる。図６はその例で、タンク１のパ
イプ取付口1aに段付カラー状の接続用カップ２の先端部
を嵌入して、タンク１，接続用カップ２間をろう付け固
定する。接続用カップ２の外周には予めスリットを形成
しておき、そのスリットより後端側にカシメ部７を設け
ておく。次に、樹脂製パイプ４はその先端部外周に外フ
ランジ部３を有すると共に、その外フランジ部３よりも
さらに先端に環状溝11を形成しておく。そしてその環状
溝11にシール用のＯリング９を嵌着し、樹脂製パイプ４
の先端部を接続用カップ２に嵌入する。そしてカシメ部
７を塑性変形することにより、樹脂製パイプ４を接続用
カップ２に固定するものである。
【０００３】
【発明が解決しようとする課題】このように樹脂製パイ
プ４に多用されている環状溝11を形成するには、図７の
如く、射出成形の金型において樹脂製パイプ４の先端部
を半径方向に分割する第１の金型12と第２の金型13を設
ける必要がある。すると、その環状溝11にはパーティン
グライン15が形成される。そのためそこにＯリング９を
被嵌しても、パーティングライン15の僅かの凸部によっ
て気密性を失われるおそれがある。そこで本発明は、係
る問題点を解決することを課題とする。
【０００４】
【課題を解決するための手段】請求項１に記載の本発明
は、円形なパイプ取付口(1a)を有するタンク(1) と、そ
のパイプ取付口(1a)に液密に接続固定されるリング状の
接続用カップ(2) と、その接続用カップ(2) に先端部が
嵌入し、その先端部外周に突設された外フランジ部(3)
で、前記接続用カップ(2) にカシメ固定される樹脂製パ
イプ(4) と、を有する樹脂製パイプとタンクとの接続構
造において、前記接続用カップ(2) は、前記タンク(1)
のパイプ取付口(1a)に一端部外周が整合するタンク嵌入
部(5a)を有すると共に、他端部に段付部(6a)を介して拡
径された拡径部(6) を有し、その拡径部(6) の縁部にカ
シメ部(7) が形成され且つ、その拡径部(6) の周方向に
互いに離間して複数の回り止め用欠切部(8a)が設けら
れ、前記樹脂製パイプ(4) は、前記外フランジ部(3) の
先端部に前記タンク嵌入部(5a)の内周に整合する嵌着部
(5) を有し、その外フランジ部(3) の外周に互いに周方
向に離間して複数の逆Ｌ字状部(8) が突設され、夫々の
逆Ｌ字状部(8) の付根部が前記接続用カップ(2) の夫々
の前記回り止め用欠切部(8a)に整合され、その外フラン
ジ部(3) と、前記接続用カップ(2) の前記段付部(6a)と
の間にシール用のＯリング(9) が保持されるＯリング保
持部(10)を有し、前記樹脂製パイプ(4) の嵌着部(5) の
外周には環状溝が設けられていないことを特徴とする樹
脂製パイプとタンクとの接続構造である。
【０００５】
【発明の実施の形態】次に、図面に基づいて本発明の実
施の形態につき説明する。図１は本発明の樹脂製パイプ
とアルミニューム製タンクとの接続構造の分解斜視図で
あり、図２はその取付け状態を示す平面図、図３は同要
部斜視図、図４は同縦断面図、図５は樹脂製パイプ４の
正面図である。この樹脂製パイプとタンクとの接続構造
は、パイプ取付口1aを有するタンク１とそのパイプ取付
口1aにろう付け等の手段で液密に固定される接続用カッ
プ２と、その接続用カップ２にＯリング９を介して先端
部が嵌着され、接続用カップ２のカシメ部７によってカ
シメ固定される樹脂製パイプ４とを有する。
【０００６】接続用カップ２は、その先端部外周がパイ
プ取付口1aに整合する嵌着部５を有し、他端部に段付部
6aを介して拡径された拡径部６を有する。そして拡径部
６の縁部に平行にスリット7aが形成され、そのスリット
7aの他端側にカシメ部７が設けられている。さらに拡径
部６には、その周方向に互いに離間して等間隔に複数の
回り止め用欠切部8aが設けられている。次に、樹脂製パ
イプ４はその先端部外周に外フランジ部３が設けられ、
その外フランジ部３の外周に互いに離間して複数の逆Ｌ
字状部８が等間隔に一体に突設されている。その逆Ｌ字
状部８の付根部が、接続用カップ２の回り止め用欠切部
8aに整合される。そして逆Ｌ字状部８の先端がタンク１
の外面に着座する。また、この逆Ｌ字状部８の付根部と
段付部6aとの間にＯリング保持部10が形成され、そのＯ
リング保持部10にシール用のＯリング９が嵌着される。
【０００７】このようにしてなる樹脂製パイプとタンク
との接続構造は、次のように組立てられる。先ず、接続
用カップ２の嵌入部5aがタンク１のパイプ取付口1aに嵌
着され、その段付部6aの外面がパイプ取付口1aの孔縁部
に着座される。係る状態で、両者間が一体にろう付けさ
れる。なお、このとき同時にタンク１と図４に示すチュ
ーブプレート16並びにチューブプレート16のチューブ挿
通孔に嵌着されたチューブ17さらに各チューブ17間に介
装される図示しないコルゲートフィンが一体にろう付け
される。次いで、樹脂製パイプ４の嵌着部５の外周にＯ
リング９が嵌着され、その嵌着部５が接続用カップ２の
嵌入部5a内に挿入される。このとき、逆Ｌ字状部８は図
３の如く回り止め用欠切部8aにその付根部が嵌着する。
次いで、カシメ部７が半径方向中心側に塑性変形され、
その縁部が外フランジ部３の外面を圧接して接続構造を
完成する。
【０００８】
【発明の作用・効果】本発明の樹脂製パイプとタンクと
の接続構造は、接続用カップ２の回り止め用欠切部8aに
樹脂製パイプ４の逆Ｌ字状部８の付根部が嵌着され、そ
の付根部と接続用カップ２の段付部6aとの間にＯリング
９が保持されるＯリング保持部10を有するから、樹脂製
パイプ４を確実に回り止め保持すると共に、嵌着部５に
環状溝を設けなくてもＯリング９を軸線方向の特定位置
に位置決めし、シール性を保持できる。それにより、従
来の環状溝を設けた場合に樹脂製パイプ４のその溝内に
生じるパーティングラインの発生を防止し、信頼性の高
いシール構造を提供できる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure for connecting a resin pipe to a metal tank of a heat exchanger. 2. Description of the Related Art As a connection structure between a metal tank and a resin pipe, a connection structure between a resin tank and a tube plate can be used. FIG. 6 shows an example of this, in which the tip of a stepped collar-shaped connection cup 2 is fitted into the pipe mounting opening 1a of the tank 1, and the tank 1 and the connection cup 2 are brazed and fixed. A slit is formed in the outer periphery of the connection cup 2 in advance, and a caulking portion 7 is provided on the rear end side of the slit. Next, the resin pipe 4 has the outer flange portion 3 on the outer periphery of the distal end portion, and the annular groove 11 is formed at the distal end further than the outer flange portion 3. Then, an O-ring 9 for sealing is fitted into the annular groove 11, and the resin pipe 4
Into the connection cup 2. Then, the resin pipe 4 is fixed to the connection cup 2 by plastically deforming the caulking portion 7. [0003] In order to form the annular groove 11 frequently used in the resin pipe 4 as described above, as shown in FIG. 7, the tip of the resin pipe 4 is formed in an injection molding die. It is necessary to provide a first mold 12 and a second mold 13 for dividing the portion in the radial direction. Then, a parting line 15 is formed in the annular groove 11. Therefore, even if the O-ring 9 is fitted thereon, the airtightness may be lost due to a slight projection of the parting line 15. Then, this invention makes it a subject to solve such a problem. According to the present invention, a tank (1) having a circular pipe fitting (1a) and a liquid-tight connection to the pipe fitting (1a) are provided. A ring-shaped connection cup (2) to be fixed, and an outer flange (3) with a tip fitted into the connection cup (2) and protruding from the outer periphery of the tip
In a connection structure between a resin pipe and a tank having a resin pipe (4) caulked and fixed to the connection cup (2), the connection cup (2) is connected to the tank (1).
The pipe mounting opening (1a) has a tank fitting part (5a) whose one end part is aligned with the outer periphery, and has a diameter-enlarging part (6) expanded at the other end through a stepped part (6a). A caulked portion (7) is formed at the edge of the enlarged diameter portion (6), and a plurality of notches (8a) for rotation prevention are provided in the circumferential direction of the enlarged diameter portion (6) so as to be separated from each other. The resin pipe (4) has a fitting portion which is aligned with the inner periphery of the tank fitting portion (5a) at the tip of the outer flange portion (3).
A plurality of inverted L-shaped portions (8) project from the outer periphery of the outer flange portion (3) in the circumferential direction and are spaced apart from each other in the circumferential direction. The root portion is aligned with each of the notches 8a for preventing rotation of the connection cup 2, and the outer flange portion 3 and the stepped portion 6a of the connection cup 2 are aligned. ), An O-ring holding portion (10) for holding an O-ring (9) for sealing, and an annular groove is provided on the outer periphery of the fitting portion (5) of the resin pipe (4). It is a connection structure between a resin pipe and a tank, which is not provided. Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a connection structure between a resin pipe and an aluminum tank according to the present invention, FIG. 2 is a plan view showing an attached state thereof, FIG. 3 is a perspective view of the same main part, and FIG. FIG. 5 is a front view of the resin pipe 4. The connection structure between the resin pipe and the tank includes a tank 1 having a pipe mounting port 1a, a connection cup 2 fixed to the pipe mounting port 1a in a liquid-tight manner by brazing or the like, and a connection cup 2 And a resin pipe 4 to which a distal end portion is fitted via an O-ring 9 and which is caulked and fixed by a caulking portion 7 of the connection cup 2. [0006] The connection cup 2 has a fitting portion 5 whose outer peripheral end is aligned with the pipe mounting port 1a, and a stepped portion is provided at the other end.
It has an enlarged diameter portion 6 enlarged through 6a. A slit 7a is formed parallel to the edge of the enlarged diameter portion 6, and the slit 7a is formed.
A caulking portion 7 is provided on the other end side of 7a. Furthermore, the enlarged diameter portion 6 is provided with a plurality of notches 8a for rotation preventing that are separated from each other in the circumferential direction and are equally spaced. Next, the resin pipe 4 is provided with an outer flange portion 3 on the outer periphery of the distal end portion,
A plurality of inverted Ls are provided on the outer periphery of the outer flange
The letter-shaped portions 8 are integrally provided at equal intervals. The base of the inverted L-shaped portion 8 is a notch for rotation prevention of the connection cup 2.
Aligned to 8a. The tip of the inverted L-shaped portion 8 is the tank 1
Sit on the outside. An O-ring holding portion 10 is formed between the base of the inverted L-shaped portion 8 and the stepped portion 6a.
An O-ring 9 for sealing is fitted to the ring holding portion 10. [0007] The connection structure between the resin pipe and the tank thus constructed is assembled as follows. First, the fitting portion 5a of the connection cup 2 is fitted into the pipe mounting port 1a of the tank 1, and the outer surface of the stepped portion 6a is seated on the hole edge of the pipe mounting port 1a. In such a state, the two are integrally brazed. At this time, the tank 1 and the tube plate 16 shown in FIG. 4, the tubes 17 fitted in the tube insertion holes of the tube plate 16 and the corrugated fins (not shown) interposed between the tubes 17 are brazed integrally. You. Next, O is applied to the outer periphery of the fitting portion 5 of the resin pipe 4.
The ring 9 is fitted, and the fitting portion 5 is inserted into the fitting portion 5a of the connection cup 2. At this time, the base of the inverted L-shaped portion 8 is fitted to the notch 8a for rotation prevention as shown in FIG.
Next, the caulking portion 7 is plastically deformed toward the center in the radial direction,
The edge portion presses the outer surface of the outer flange portion 3 to complete the connection structure. The connection structure between the resin pipe and the tank according to the present invention is obtained by attaching the inverted L-shaped portion 8 of the resin pipe 4 to the notch 8a for preventing rotation of the connection cup 2. Since the O-ring holding portion 10 for holding the O-ring 9 between the root portion and the stepped portion 6a of the connection cup 2 is fitted to the root portion, the resin pipe 4 is reliably prevented from rotating. At the same time, the O-ring 9 can be positioned at a specific position in the axial direction without providing an annular groove in the fitting portion 5, and the sealing property can be maintained. Thereby, when a conventional annular groove is provided, generation of a parting line generated in the groove of the resin pipe 4 can be prevented, and a highly reliable sealing structure can be provided.
【図面の簡単な説明】
【図１】本発明の樹脂製パイプとタンクとの接続構造の
分解斜視図。
【図２】同接続構造の組立状態を示す要部平面図。
【図３】同接続構造の要部斜視図。
【図４】同接続構造の縦断面図。
【図５】同接続構造に用いられる樹脂製パイプ４の正面
図。
【図６】従来型接続構造の縦断面図。
【図７】同接続構造に用いられた樹脂製パイプ４の射出
成形用金型の説明図。
【符号の説明】
１ タンク
1a パイプ取付口
２ 接続用カップ
３ 外フランジ部
４ 樹脂製パイプ
５ 嵌着部
5a 嵌入部
６ 拡径部
6a 段付部
７ カシメ部
7a スリット
８ 逆Ｌ字状部
8a 回り止め用欠切部
９ Ｏリング
10 Ｏリング保持部
11 環状溝
12，13，14 金型
15 パーティングライン
16 チューブプレート
17 チューブBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a connection structure between a resin pipe and a tank according to the present invention. FIG. 2 is an essential part plan view showing an assembled state of the connection structure. FIG. 3 is a perspective view of a main part of the connection structure. FIG. 4 is a longitudinal sectional view of the connection structure. FIG. 5 is a front view of a resin pipe 4 used in the connection structure. FIG. 6 is a longitudinal sectional view of a conventional connection structure. FIG. 7 is an explanatory view of a mold for injection molding of a resin pipe 4 used in the connection structure. [Description of Signs] 1 Tank 1a Pipe mounting port 2 Connection cup 3 Outer flange 4 Resin pipe 5 Fitting portion 5a Fitting portion 6 Large diameter portion 6a Stepped portion 7 Caulking portion 7a Slit 8 Reverse L-shaped portion 8a Notch for rotation prevention 9 O-ring 10 O-ring holding part 11 Annular groove 12, 13, 14 Mold 15 Parting line 16 Tube plate 17 Tube
Claims (1)
(1) と、 そのパイプ取付口(1a)に液密に接続固定されるリング状
の接続用カップ(2) と、 その接続用カップ(2) に先端部が嵌入し、その先端部外
周に突設された外フランジ部(3) で、前記接続用カップ
(2) にカシメ固定される樹脂製パイプ(4) と、を有する
樹脂製パイプとタンクとの接続構造において、 前記接続用カップ(2) は、前記タンク(1) のパイプ取付
口(1a)に一端部外周が整合するタンク嵌入部(5a)を有す
ると共に、他端部に段付部(6a)を介して拡径された拡径
部(6) を有し、その拡径部(6) の縁部にカシメ部(7) が
形成され且つ、 その拡径部(6) の周方向に互いに離間して複数の回り止
め用欠切部(8a)が設けられ、 前記樹脂製パイプ(4) は、前記外フランジ部(3) の先端
部に前記タンク嵌入部(5a)内に整合する嵌着部(5) を有
し、その外フランジ部(3) の外周に互いに周方向に離間
して複数の逆Ｌ字状部(8) が突設され、夫々の逆Ｌ字状
部(8) の付根部が前記接続用カップ(2) の夫々の前記回
り止め用欠切部(8a)に整合され、 その外フランジ部(3) と、前記接続用カップ(2) の前記
段付部(6a)との間にシール用のＯリング(9) が保持され
るＯリング保持部(10)を有し、前記樹脂製パイプ(4) の
嵌着部(5) の外周には環状溝が設けられていないことを
特徴とする樹脂製パイプとタンクとの接続構造。Claims: 1. A tank having a circular pipe mounting opening (1a).
(1), a ring-shaped connection cup (2) that is connected and fixed to the pipe mounting port (1a) in a liquid-tight manner, and a distal end of the connection cup (2) is fitted into the connection cup (2). At the protruding outer flange (3), the connection cup
(2) In a connection structure between a resin pipe and a tank having a resin pipe (4) fixed by swaging, the connection cup (2) is provided with a pipe mounting port (1a) of the tank (1). Has a tank fitting part (5a) whose one end part outer periphery is aligned with, and has a large diameter part (6) enlarged at the other end part via a stepped part (6a), and the large diameter part (6 A swaged portion (7) is formed at the edge of the pipe, and a plurality of detent notches (8a) are provided apart from each other in the circumferential direction of the enlarged diameter portion (6), and the resin pipe ( 4) has a fitting portion (5) which is aligned with the inside of the tank fitting portion (5a) at the tip of the outer flange portion (3), and is circumferentially attached to the outer periphery of the outer flange portion (3). A plurality of inverted L-shaped portions (8) project from each other, and the roots of the respective inverted L-shaped portions (8) are connected to the respective rotation-stopping notches (2) of the connection cup (2). 8a) and its outer flange (3) An O-ring holding portion (10) for holding a sealing O-ring (9) between the stepped portion (6a) of the cup (2) and a fitting of the resin pipe (4). A connection structure between a resin pipe and a tank, wherein an annular groove is not provided on an outer periphery of the portion (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001209899A JP4588932B2 (en) | 2001-07-10 | 2001-07-10 | Connection structure between resin pipe and tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001209899A JP4588932B2 (en) | 2001-07-10 | 2001-07-10 | Connection structure between resin pipe and tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003021290A true JP2003021290A (en) | 2003-01-24 |
| JP4588932B2 JP4588932B2 (en) | 2010-12-01 |
Family
ID=19045478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001209899A Expired - Fee Related JP4588932B2 (en) | 2001-07-10 | 2001-07-10 | Connection structure between resin pipe and tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4588932B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014045951A1 (en) * | 2012-09-24 | 2014-03-27 | テイ・エス テック株式会社 | Attachment structure for connecting member for seat and attachable member, and seat structure |
| KR102081641B1 (en) * | 2019-10-17 | 2020-02-26 | 허철 | Angle Valve and Manufacturing Method of it |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858470B (en) * | 2010-06-12 | 2015-01-07 | 海洋王照明科技股份有限公司 | Through pipe connection structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08159688A (en) * | 1994-12-01 | 1996-06-21 | Zexel Corp | Port pipe mount structure to heat exchanger tank |
| JPH09257166A (en) * | 1996-03-21 | 1997-09-30 | Calsonic Corp | Pipe connecting structure |
| JPH11236985A (en) * | 1998-02-23 | 1999-08-31 | Denso Corp | Connecting structure for pipe |
| JP2001280558A (en) * | 2000-03-30 | 2001-10-10 | Calsonic Kansei Corp | Joint device for piping |
-
2001
- 2001-07-10 JP JP2001209899A patent/JP4588932B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08159688A (en) * | 1994-12-01 | 1996-06-21 | Zexel Corp | Port pipe mount structure to heat exchanger tank |
| JPH09257166A (en) * | 1996-03-21 | 1997-09-30 | Calsonic Corp | Pipe connecting structure |
| JPH11236985A (en) * | 1998-02-23 | 1999-08-31 | Denso Corp | Connecting structure for pipe |
| JP2001280558A (en) * | 2000-03-30 | 2001-10-10 | Calsonic Kansei Corp | Joint device for piping |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014045951A1 (en) * | 2012-09-24 | 2014-03-27 | テイ・エス テック株式会社 | Attachment structure for connecting member for seat and attachable member, and seat structure |
| JP2014065338A (en) * | 2012-09-24 | 2014-04-17 | Ts Tech Co Ltd | Seat connection member, attachment structure of attachment member, and seat structure |
| CN104661862A (en) * | 2012-09-24 | 2015-05-27 | 提爱思科技股份有限公司 | Attachment structure for connecting member for seat and attachable member, and seat structure |
| KR102081641B1 (en) * | 2019-10-17 | 2020-02-26 | 허철 | Angle Valve and Manufacturing Method of it |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4588932B2 (en) | 2010-12-01 |
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