JP4322618B2 - Liquid seal vibration isolator - Google Patents

Liquid seal vibration isolator Download PDF

Info

Publication number
JP4322618B2
JP4322618B2 JP2003352656A JP2003352656A JP4322618B2 JP 4322618 B2 JP4322618 B2 JP 4322618B2 JP 2003352656 A JP2003352656 A JP 2003352656A JP 2003352656 A JP2003352656 A JP 2003352656A JP 4322618 B2 JP4322618 B2 JP 4322618B2
Authority
JP
Japan
Prior art keywords
seal
elastic body
pair
liquid
vibration isolator
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.)
Expired - Fee Related
Application number
JP2003352656A
Other languages
Japanese (ja)
Other versions
JP2005114139A (en
Inventor
雄二 武藤
宏和 門脇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamashita Rubber Co Ltd
Original Assignee
Yamashita Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yamashita Rubber Co Ltd filed Critical Yamashita Rubber Co Ltd
Priority to JP2003352656A priority Critical patent/JP4322618B2/en
Publication of JP2005114139A publication Critical patent/JP2005114139A/en
Application granted granted Critical
Publication of JP4322618B2 publication Critical patent/JP4322618B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Combined Devices Of Dampers And Springs (AREA)

Description

この発明はブッシュ型液封防振装置に係り、特に弾性体と外筒間におけるシールを確実にしたものに関する。   The present invention relates to a bush type liquid seal vibration isolator, and more particularly to a device that ensures a seal between an elastic body and an outer cylinder.

ブッシュ型液封防振装置は公知であり、内筒の周囲を筒で囲み、これらの間に弾性体を設け、この弾性体の内部に液室を設けた液封防振装置において、
前記弾性体は、一対のリング部と、これらを相互に連結する複数のステー部を有する中間スリーブを埋設一体化するとともに、外周面にシール突条を全周にわたってリング状に形成した構造になっている。 Bush-type liquid seal vibration isolator is known, in a liquid seal vibration isolator having an inner cylinder surrounded by a cylinder, an elastic body provided between them, and a liquid chamber provided inside the elastic body.
The elastic body has a structure in which a pair of ring portions and an intermediate sleeve having a plurality of stay portions for interconnecting them are embedded and integrated, and a seal protrusion is formed in a ring shape on the entire outer periphery. ing.

特公昭６３−３７６３号公報Japanese Patent Publication No. 63-3763

ところで、外筒の軸方向端部に位置する弾性体の側壁部外周に位置決め用の切り欠きを設ける場合があり、この位置決め用の切り欠きの設け方によってはシール突条と外筒の間におけるシールを不完全にするおそれがあった。そこでこのような場合でも、シールを確実にすることを目的とする。
By the way, there is a case where a notch for positioning is provided on the outer periphery of the side wall portion of the elastic body located at the axial end of the outer cylinder. There was a risk of incomplete sealing. Therefore, even in such a case, an object is to ensure the seal.

上記課題を解決するため本願発明に係る液封防振装置は、内筒の周囲を外筒で囲み、これらの内筒と外筒を各軸方向両端部で連結する一対の側壁を備えた弾性体を設け、この弾性体の内部に複数の液室を設けた液封防振装置において、
前記弾性体は、前記一対の側壁の各外周面にシール突条を全周にわたってリング状に形成した第１シールを一対で備え、
この各第１シールの内側へ張り出す第２シールを設け、さらに前記側壁の外周部でこの第２シールと対応する部分に位置決め用の切り欠きを設けるとともに、
前記弾性体の外周部には前記軸方向における前記一対の第１シール間に前記複数の液室をつなぐオリフィス溝が設けられ、
前記位置決め用切り欠きは、第１シールを挟んでオリフィス溝の反対側に位置して、前記軸方向端部から前記第１シールへ近接するように食い込んで前記弾性体の成形時に金型により形成され、
前記第２シールは前記第１シールの前記位置決め用切り欠きから周方向両側へ離れた位置間を囲み、前記第１シールと、前記液室及びオリフィス溝との間に形成されることを特徴とする。
In order to solve the above problems, a liquid seal vibration isolator according to the present invention is an elastic device including a pair of side walls that surround an inner cylinder with an outer cylinder and connect the inner cylinder and the outer cylinder at both axial ends. In a liquid seal vibration isolator provided with a plurality of liquid chambers inside the elastic body ,
Before SL elastic body includes a first seal formed in a ring shape over the entire periphery of the sealing protrusion to the peripheral surface of the pair of side walls a pair,
The second seal protruding to the inside of the first seal provided further Rutotomoni provided a notch for positioning the corresponding parts in the outer peripheral portion and the second seal of the side wall,
An orifice groove that connects the plurality of liquid chambers is provided between the pair of first seals in the axial direction on the outer peripheral portion of the elastic body,
The positioning notch is located on the opposite side of the orifice groove with the first seal interposed therebetween, and is formed by a mold when the elastic body is molded by biting so as to approach the first seal from the axial end portion. And
The second seal surrounds a position of the first seal away from the positioning notch to both sides in the circumferential direction, and is formed between the first seal, the liquid chamber, and the orifice groove. To do.

弾性体の側壁外周面に設けたリング状をなす第１シールを設け、さらに側壁の外周部側面に位置決め用の切り欠きを設けるとともに、第１シールのうち位置決め用の切り欠きと対応する位置に第２シールを内側へ設けた２重シール構造としたので、位置決め用の切り欠きをシール突条へ達するまでに深く形成した場合でも第２シールによりシールを確保
し、確実なシールを維持できる。
しかも、中間スリーブのステー部の上を利用して第２シールを設けることにより、第２シールを設けるスペースを容易に確保できる。
A ring-shaped first seal provided on the outer peripheral surface of the side wall of the elastic body is provided. Further, a positioning notch is provided on the side surface of the outer peripheral portion of the side wall, and a position corresponding to the positioning notch in the first seal is provided. Since the double seal structure in which the second seal is provided on the inside is provided, even when the positioning notch is formed deeply until reaching the seal protrusion, the seal is secured by the second seal, and a reliable seal can be maintained.
In addition, by providing the second seal using the stay portion of the intermediate sleeve, a space for providing the second seal can be easily secured.

以下、図面に基づいて一実施形態を説明する。図１は、実施例製品であるエンジンマウント用ブッシュ型液封防振装置の正面図であり、略円筒状をなすマウント本体１と外筒２を備え、マウント本体１を外筒２へ圧入等することにより一体化されている。外筒２は例えば車体（（図示省略）側へ圧入等適宜手段で取付けられている。   Hereinafter, an embodiment will be described based on the drawings. FIG. 1 is a front view of a bush type liquid seal vibration isolator for an engine mount, which is an embodiment product, which includes a mount body 1 and an outer cylinder 2 that are substantially cylindrical, and the mount body 1 is press-fitted into the outer cylinder 2. It is integrated by doing. The outer cylinder 2 is attached by appropriate means such as press fitting to the vehicle body (not shown) side, for example.

マウント本体１は内筒３と、その周囲に形成された弾性体４とを備える。弾性体４はゴム等の適宜防振用弾性材料からなり、マウント本体１の軸方向両端側に設けられる全体として略円筒状に成形された一対の側壁５を備える。６はすぐり穴であり、弾性体４をマウント本体１の軸方向へ貫通して、側壁５に開口している。符号７は側壁５の外周部に周方向等間隔に形成されたセット凹部であり、金型によって形成される。符号８は位置決め用の切り欠きであり、弾性体４を金型内で形成する型成形時における位置決め用として設けられる。   The mount body 1 includes an inner cylinder 3 and an elastic body 4 formed around the inner cylinder 3. The elastic body 4 is made of an appropriate vibration-proofing elastic material such as rubber, and includes a pair of side walls 5 that are provided on both ends in the axial direction of the mount body 1 and are formed in a substantially cylindrical shape as a whole. Reference numeral 6 denotes a hole, which penetrates the elastic body 4 in the axial direction of the mount body 1 and opens in the side wall 5. Reference numeral 7 denotes a set recess formed in the outer peripheral portion of the side wall 5 at equal intervals in the circumferential direction, and is formed by a mold. Reference numeral 8 denotes a notch for positioning, and is provided for positioning during mold forming in which the elastic body 4 is formed in a mold.

図２はマウント本体１の側面図である。この図において、内筒３の軸線方向における弾性体４の両端部は一対の側壁５をなし、これらの間には、主液室用凹部１０と副液室用凹部１１が形成され、側壁５と一体に形成されるアーム１２によって区画されている。アーム部１２の外周面１３には主液室用凹部１０と副液室用凹部１１をつなぐオリフィス溝１４が形成されている。   FIG. 2 is a side view of the mount body 1. In this figure, both ends of the elastic body 4 in the axial direction of the inner cylinder 3 form a pair of side walls 5 between which a main liquid chamber recess 10 and a sub liquid chamber recess 11 are formed. And is formed by an arm 12 formed integrally. An orifice groove 14 that connects the main liquid chamber recess 10 and the sub liquid chamber recess 11 is formed on the outer peripheral surface 13 of the arm 12.

各側壁５の外周面はアーム部１２の外周面１３と連続して面一であり、その一部には
径方向外方へ突出するとともに全周にリング状をなし本願発明の第１シールに相当するシール突条１５が一体成形されている。また、アーム部１２の外周面１３と連続する部分の側部には位置決め用の切り欠き８が内方へ食い込んで形成されている。
The outer peripheral surface of each side wall 5 is flush continuous with the outer peripheral surface 13 of the arm portion 12, the first seal all around Na Shi present invention a ring-shape with protruding thereof to a portion radially outward is A seal protrusion 15 corresponding to is integrally formed. In addition, a positioning notch 8 is formed by biting inwardly on a side portion of the arm portion 12 that is continuous with the outer peripheral surface 13.

この切り欠き８の近傍において、シール突条１５の内側に略コ字状をなす第２シール
１６がアーム部１２の外周面１３へ入り込んでシール突条１５及びアーム部１２の外周面１３と一体に形成されている。第２シール１６の両端はシール突条１５へ接続して連続している。シール突条１５と第２シール１６の突出高さは同程度である。 In the vicinity of the notch 8, a second seal 16 having a substantially U-shape inside the seal protrusion 15 enters the outer peripheral surface 13 of the arm portion 12 and is integrated with the seal protrusion 15 and the outer peripheral surface 13 of the arm portion 12. Is formed. Both ends of the second seal 16 are connected to the seal protrusion 15 and are continuous. The protruding heights of the seal protrusion 15 and the second seal 16 are approximately the same.

図３は図２における３−３線断面図であり、弾性体４の内部には中間スリーブ１７が埋設一体化されている。アーム部１２は対をなして内筒３から径方向へ互いに逆方向かつ図の斜め下方へ延び、主液室２０と副液室２１を区画する。主液室２０と副液室２１の間にはオリフィス通路２２で連通される。これら主液室２０と副液室２１及びオリフィス通路２２は、主液室用凹部１０、副液室用凹部１１及びオリフィス溝１４と外筒２との間に形成され、非圧縮性液体で満たされる。なお、副液室２１は図の左右方向に分割され、かつすぐり６に臨む部分は伸縮自在の膜部であるダイアフラム部２３になっている。   3 is a cross-sectional view taken along line 3-3 in FIG. 2, and an intermediate sleeve 17 is embedded and integrated inside the elastic body 4. FIG. The arm portions 12 form a pair and extend from the inner cylinder 3 in the radial direction in opposite directions to each other and obliquely downward in the figure, thereby dividing the main liquid chamber 20 and the sub liquid chamber 21. An orifice passage 22 communicates between the main liquid chamber 20 and the sub liquid chamber 21. The main liquid chamber 20, the sub liquid chamber 21 and the orifice passage 22 are formed between the main liquid chamber recess 10, the sub liquid chamber recess 11, the orifice groove 14 and the outer cylinder 2, and are filled with an incompressible liquid. It is. The sub-liquid chamber 21 is divided in the left-right direction in the figure, and a portion facing the tick 6 is a diaphragm portion 23 which is a stretchable membrane portion.

図４は図２の４−４線相当断面図であり、弾性体４は側壁５の外周面及びアーム部１２の外周面１３と同一高さの連続する面をなして外筒２の内周面へ密接し、外周面１３の軸方向両端部である側壁５の外周面はシール突条１５をつぶして外筒２へ密着することにより密にシールされる。また、シール突条１５の内側に位置する第２シール１６も同様につぶされながら外筒２へ密着することにより密にシールされる。   4 is a cross-sectional view corresponding to the line 4-4 in FIG. The outer peripheral surface of the side wall 5, which is in close contact with the surface and which is both ends in the axial direction of the outer peripheral surface 13, is tightly sealed by crushing the seal protrusion 15 and closely contacting the outer cylinder 2. Further, the second seal 16 positioned inside the seal protrusion 15 is also tightly sealed by being in close contact with the outer cylinder 2 while being crushed.

図５は中間スリーブ１７の正面図、図６はその側面図である。中間スリーブ１７はアルミ合金等の金属や樹脂等の適宜材料よりなり、一対のリング部３５これらを軸線方向へつないで全体を一体化する複数のステー部３３とで構成される。   5 is a front view of the intermediate sleeve 17, and FIG. 6 is a side view thereof. The intermediate sleeve 17 is made of an appropriate material such as a metal such as an aluminum alloy or a resin, and includes a pair of ring portions 35 and a plurality of stay portions 33 that connect the whole in the axial direction and integrate the whole.

ステー部３３はリング部３５より一段低くなった段部として略平板状に形成され、その上がアーム部１２の外周面１３を支持する部分となり、そのうち一つのステー部３３の端部で位置決め用の切り欠き８と対応する位置に切り欠き部３８が形成されている。また、主液室用凹部１０及び副液室用凹部１１に対応する位置には、それぞれ窓穴３０，３１が形成されている。   The stay portion 33 is formed in a substantially flat plate shape as a step portion that is one step lower than the ring portion 35, and the upper portion is a portion that supports the outer peripheral surface 13 of the arm portion 12, of which one end of the stay portion 33 is used for positioning. A notch 38 is formed at a position corresponding to the notch 8. In addition, window holes 30 and 31 are formed at positions corresponding to the main liquid chamber recess 10 and the sub liquid chamber recess 11, respectively.

中間スリーブ１７をインサートした状態で弾性体４を一体に形成すると、リング部３５は側壁５に埋設され、リング部３５の外周部上に側壁５の外周部及びシール突条１５が一体に形成される。また、図５における上方のステー部３３にはダイアフラム部２３の端部が一体化され、下方の対向する一対のステー３３部にはアーム部１２の外周面１３が一体化される。   When the elastic body 4 is integrally formed with the intermediate sleeve 17 inserted, the ring portion 35 is embedded in the side wall 5, and the outer peripheral portion of the side wall 5 and the seal protrusion 15 are integrally formed on the outer peripheral portion of the ring portion 35. The Further, the end portion of the diaphragm portion 23 is integrated with the upper stay portion 33 in FIG. 5, and the outer peripheral surface 13 of the arm portion 12 is integrated with a pair of lower stay portions 33 that are opposed to each other.

次に、本実施例の作用を説明する。側壁５の外周面にシール突条１５と第２シール１６を設けた２重シール構造としたので、側壁５の外周部に位置決め用の切り欠き８を形成したとき、その深さがシール突条１５へ達するようなことがあっても、第２シール１６によりシールを保つことができる。しかも、ステー部３３を利用してその上に形成される外周面１３に第２シール１６を形成するスペースを確保することができる。
Next, the operation of this embodiment will be described. Since the double seal structure is provided in which the seal protrusion 15 and the second seal 16 are provided on the outer peripheral surface of the side wall 5, when the positioning notch 8 is formed on the outer peripheral portion of the side wall 5, the depth thereof is the seal protrusion. Even if it reaches 15, the second seal 16 can keep the seal. Moreover, it is possible to secure a space for forming the second seal 16 on the outer peripheral surface 13 formed on the stay portion 33.

実施例に係るブッシュ型液封防振装置の正面図Front view of the bush type liquid seal vibration isolator according to the embodiment 本体部の側面図Side view of the main unit 図２の３−３線断面図3-3 sectional view of FIG. 図２の４−４線断面図Sectional view along line 4-4 in FIG. 中間スリーブの正面図Front view of intermediate sleeve 中間スリーブの側面図Side view of intermediate sleeve

符号の説明Explanation of symbols

１：マウント本体、２：外筒、３：内筒、４：弾性体、５：側壁、８：位置決め用の切り欠き、１２：アーム部、１３：外周面、１５：シール突条、１６：第２シール、１７：中間スリーブ、２０：主液室、２１：副液室、２３：オリフィス通略、３３：ステー部、３５：リング部、３８：切り欠き 1: mount body, 2: outer cylinder, 3: inner cylinder, 4: elastic body, 5: side wall, 8: notch for positioning, 12: arm portion, 13: outer peripheral surface, 15: seal ridge, 16: Second seal, 17: Intermediate sleeve, 20: Main liquid chamber, 21: Sub liquid chamber, 23: Orifice omitted, 33: Stay section, 35: Ring section, 38: Notch

Claims (3)

内筒の周囲を外筒で囲み、これらの内筒と外筒を各軸方向両端部で連結する一対の側壁を備えた弾性体を設け、この弾性体の内部に複数の液室を設けた液封防振装置において、
前記弾性体は、前記一対の側壁の各外周面にシール突条を全周にわたってリング状に形成した第１シールを一対で備え、
この各第１シールの内側へ張り出す第２シールを設け、さらに前記側壁の外周部でこの第２シールと対応する部分に位置決め用の切り欠きを設けるとともに、
前記弾性体の外周部には前記軸方向における前記一対の第１シール間に前記複数の液室をつなぐオリフィス溝が設けられ、
前記位置決め用切り欠きは、第１シールを挟んでオリフィス溝の反対側に位置して、前記軸方向端部から前記第１シールへ近接するように食い込んで前記弾性体の成形時に金型により形成され、
前記第２シールは前記第１シールの前記位置決め用切り欠きから周方向両側へ離れた位置間を囲み、前記第１シールと、前記液室及びオリフィス溝との間に形成されることを特徴とする液封防振装置。 An elastic body having a pair of side walls that surround the inner cylinder with an outer cylinder and connecting the inner cylinder and the outer cylinder at both axial ends is provided, and a plurality of liquid chambers are provided inside the elastic body. In liquid seal vibration isolator ,
Before SL elastic body includes a first seal formed in a ring shape over the entire periphery of the sealing protrusion to the peripheral surface of the pair of side walls a pair,
The second seal protruding to the inside of the first seal provided further Rutotomoni provided a notch for positioning the corresponding parts in the outer peripheral portion and the second seal of the side wall,
An orifice groove that connects the plurality of liquid chambers is provided between the pair of first seals in the axial direction on the outer peripheral portion of the elastic body,
The positioning notch is located on the opposite side of the orifice groove with the first seal interposed therebetween, and is formed by a mold when the elastic body is molded by biting so as to approach the first seal from the axial end portion. And
The second seal surrounds a position of the first seal away from the positioning notch to both sides in the circumferential direction, and is formed between the first seal, the liquid chamber, and the orifice groove. Liquid seal vibration isolator. 前記第２シールは略コ字状をなし、両端部が前記第１シールへ接続して一体に形成され、中間部が前記第１シールと、前記液室及びオリフィス溝との間に形成されることを特徴とする請求項１に記載した液封防振装置。The second seal is substantially U-shaped, and both end portions are integrally connected to the first seal, and an intermediate portion is formed between the first seal, the liquid chamber, and the orifice groove. The liquid seal vibration isolator according to claim 1. 前記弾性体に埋設一体化される中間スリーブを備え、この中間スリーブは、前記側壁に一体化される一対のリング部と、これらを相互に連結する平板状をなす複数のステー部を有し、前記弾性体の一部で前記複数のステー部の一部の上を覆う部分外周に、前記第２シールと前記オリフィス溝が形成されることを特徴とする請求項１又は２に記載した液封防振装置。The intermediate sleeve includes an intermediate sleeve embedded and integrated in the elastic body, and the intermediate sleeve includes a pair of ring portions integrated with the side wall and a plurality of stay portions having a flat plate shape that interconnects them. 3. The liquid seal according to claim 1, wherein the second seal and the orifice groove are formed on an outer periphery of a portion that covers a part of the plurality of stay portions with a part of the elastic body. Anti-vibration device.
JP2003352656A 2003-10-10 2003-10-10 Liquid seal vibration isolator Expired - Fee Related JP4322618B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003352656A JP4322618B2 (en) 2003-10-10 2003-10-10 Liquid seal vibration isolator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003352656A JP4322618B2 (en) 2003-10-10 2003-10-10 Liquid seal vibration isolator

Publications (2)

Publication Number Publication Date
JP2005114139A JP2005114139A (en) 2005-04-28
JP4322618B2 true JP4322618B2 (en) 2009-09-02

Family

ID=34543524

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003352656A Expired - Fee Related JP4322618B2 (en) 2003-10-10 2003-10-10 Liquid seal vibration isolator

Country Status (1)

Country Link
JP (1) JP4322618B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101089137B1 (en) * 2008-12-09 2011-12-05 주식회사 대흥알앤티 Hydro bush for car and strut mount for car

Also Published As

Publication number Publication date
JP2005114139A (en) 2005-04-28

Similar Documents

Publication Publication Date Title
JP3929927B2 (en) Liquid filled mounting device
JPH1038015A (en) Liquid seal type vibration-control device and assembling method thereof
JP2003120745A (en) Vibration control device
JP4322618B2 (en) Liquid seal vibration isolator
JP4375246B2 (en) Liquid seal vibration isolator with resin bracket
JP2006250340A (en) Fluid encapsulated type vibration isolating device
JP2006046555A (en) Liquid-filled vibration-proofing device
JP3763024B1 (en) Liquid-filled vibration isolator
JP3601196B2 (en) Inclined fluid-filled cylindrical mount
JP4179704B2 (en) Liquid seal vibration isolator
JP5907777B2 (en) Fluid filled cylindrical vibration isolator
JPWO2006027827A1 (en) Liquid-filled vibration isolator
JP2006189066A (en) Vibration control device
JPH01126453A (en) Fluid sealed-in cylindrical mount device
JP2005249063A (en) Engine mount
JPH11210812A (en) Fluid enclosed type cylindrical mount device and manufacture thereof
JP2007056914A (en) Liquid-sealed type vibration control device
JP4179705B2 (en) Liquid seal vibration isolator
JP5215156B2 (en) Liquid-filled vibration isolator
JP3889515B2 (en) Vibration isolator
JP2007040458A (en) Vibration control device
JPH0893838A (en) Vibration control device
JP4833188B2 (en) Fluid-filled vibration isolator and manufacturing method thereof
JP5097073B2 (en) Fluid filled anti-vibration connecting rod and manufacturing method thereof
JPH08320043A (en) Vibration control bush

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20061010

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080813

A131 Notification of reasons for refusal

Effective date: 20080819

Free format text: JAPANESE INTERMEDIATE CODE: A131

A521 Written amendment

Effective date: 20081020

Free format text: JAPANESE INTERMEDIATE CODE: A523

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Effective date: 20090527

Free format text: JAPANESE INTERMEDIATE CODE: A01

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090603

R150 Certificate of patent (=grant) or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120612

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees