JP2007009883A - Intake control device for engine - Google Patents

Intake control device for engine Download PDF

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Publication number
JP2007009883A
JP2007009883A JP2005195260A JP2005195260A JP2007009883A JP 2007009883 A JP2007009883 A JP 2007009883A JP 2005195260 A JP2005195260 A JP 2005195260A JP 2005195260 A JP2005195260 A JP 2005195260A JP 2007009883 A JP2007009883 A JP 2007009883A
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Japan
Prior art keywords
valve
intake
intake manifold
engine
control device
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JP2005195260A
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JP4625379B2 (en
Inventor
Itaru Noguchi
格 野口
Kaneichi Yamada
兼市 山田
Kenji Takahashi
健二 高橋
Yasunori Konishi
泰則 小西
Hajime Udo
肇 宇土
Kazuhiro Akima
和洋 秋間
Hisakazu Komata
久和 小俣
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Honda Motor Co Ltd
Keihin Corp
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Honda Motor Co Ltd
Keihin Corp
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Priority to JP2005195260A priority Critical patent/JP4625379B2/en
Priority to EP06013760.1A priority patent/EP1748167B1/en
Priority to CNB2006100957776A priority patent/CN100473808C/en
Publication of JP2007009883A publication Critical patent/JP2007009883A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

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Abstract

<P>PROBLEM TO BE SOLVED: To provide an intake control device for an engine enabling parallel assembling of an intake manifold and an on-off valve, having good assemblability and capable of securing a good operating condition of the on-off-valve all the time with the on-off valve mounted to the intake manifold. <P>SOLUTION: This intake control device for the internal combustion engine is provided with the intake manifold M made of synthetic resin and the butterfly-type on-off valve V arranged inside the intake manifold M and capable of switching a low-speed intake mode adjusted to low-speed operation and a high-speed intake mode adjusted to high-speed operation. The on-off valve V comprises a valve case 15 having a plurality of valve holes 16, 16, ... and joined to an inner wall of the intake manifold M at two portions in both end parts, a valve shaft 17 rotatably supported by the valve case 15 and the plurality of valve plates 19, mounted to the valve shaft 17 and opening/closing the valve holes 16. Rigidity of the valve case 15 between the two joining portions is set larger than that of the intake manifold M between the two joining portions. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は,合成樹脂製の吸気マニフォルドと,この吸気マニフォルド内に設置され,この吸気マニフォルド内の複数の吸気路を開閉することで,吸気マニフォルド内をエンジンの低速運転に適応する低速吸気モードと高速運転に適応する高速吸気モードとに切り換え得るバタフライ型の開閉弁と,この開閉弁を作動するアクチュエータとを備える,エンジン用吸気制御装置の改良に関する。   The present invention includes an intake manifold made of synthetic resin, and a low-speed intake mode that is installed in the intake manifold and that opens and closes a plurality of intake passages in the intake manifold to adapt the intake manifold to low-speed operation of the engine. The present invention relates to an improvement in an intake control device for an engine that includes a butterfly type on-off valve that can be switched to a high-speed intake mode adapted to high-speed operation and an actuator that operates the on-off valve.

かゝるエンジン用吸気制御装置は,特許文献1に開示されているように,既に知られている。
特開平8−277717号公報
Such an intake control device for an engine is already known as disclosed in Patent Document 1.
JP-A-8-277717

従来のかゝるエンジン用吸気制御装置では,複数に分割される吸気マニフォルドの組み立て過程で開閉弁を組み込むようにしているため,吸気マニフォルドと開閉弁とを並行して組み立てることができず,組立性が悪い。   In the conventional intake control system for an engine, since the on-off valve is incorporated in the process of assembling the intake manifold divided into a plurality of parts, the intake manifold and the on-off valve cannot be assembled in parallel. Is bad.

本発明は,かゝる事情に鑑みてなされたもので,吸気マニフォルド及び開閉弁の並行組み立てが可能であって組立性が良好であり,しかも開閉弁の吸気マニフォルドへの取り付け状態では,常に開閉弁の良好な作動状態を確保し得るようにした,エンジン用吸気制御装置を提供することを目的とする。   The present invention has been made in view of such circumstances. The intake manifold and the on-off valve can be assembled in parallel, and the assemblability is good, and the on-off valve is always opened and closed when attached to the intake manifold. An object of the present invention is to provide an intake control device for an engine that can ensure a good operating state of a valve.

上記目的を達成するために,本発明は,合成樹脂製の吸気マニフォルドと,この吸気マニフォルド内に設置され,この吸気マニフォルド内の複数の吸気路を開閉することで,吸気マニフォルド内をエンジンの低速運転に適応する低速吸気モードと高速運転に適応する高速吸気モードとに切り換え得るバタフライ型の開閉弁と,この開閉弁を作動するアクチュエータとを備える,エンジン用吸気制御装置において,前記開閉弁を,複数の弁孔を有すると共に,これら弁孔が前記吸気路に連なるように前記吸気マニフォルドの内壁に締結部材により複数箇所で締結される弁ケースと,前記弁孔を横断しながら前記弁ケースに回転自在に支承されると共に,前記アクチュエータに連結される弁軸と,この弁軸に取り付けられて前記弁孔を開閉する複数の弁板とで構成し,前記複数の締結箇所間での前記弁ケースの剛性を,前記複数の締結箇所間での前記吸気マニフォルドの剛性より大としたことを第1の特徴とする。   In order to achieve the above-described object, the present invention provides a synthetic resin intake manifold and an intake manifold that is installed in the intake manifold and opens and closes a plurality of intake passages in the intake manifold so that the intake manifold is opened at a low speed in the intake manifold. An engine intake control device comprising a butterfly-type on-off valve that can be switched between a low-speed intake mode adapted to operation and a high-speed intake mode adapted to high-speed operation, and an actuator that operates the on-off valve. A valve case that has a plurality of valve holes and that is fastened to the inner wall of the intake manifold by a fastening member so that the valve holes are connected to the intake passage at a plurality of locations, and rotates to the valve case while crossing the valve holes A valve shaft that is supported freely and connected to the actuator, and a valve shaft that is attached to the valve shaft and opens and closes the valve hole. Constituted by the valve plate, the rigidity of the valve casing between the plurality of fastening portions, the first characterized in that a larger than the rigidity of the intake manifold between the plurality of fastening portions.

尚,前記アクチュエータは,後述する本発明の実施例中の電動モータ30に対応し,また前記吸気路は第2吸気路12に対応する。   The actuator corresponds to an electric motor 30 in an embodiment of the present invention described later, and the intake path corresponds to the second intake path 12.

また本発明は,第1の特徴に加えて,前記弁ケースには,前記複数の締結箇所間に亙る複数条の縦リブと,これら縦リブと交差する複数条の横リブとを一体に形成したことを第2の特徴とする。   According to the present invention, in addition to the first feature, the valve case is integrally formed with a plurality of vertical ribs extending between the plurality of fastening points and a plurality of horizontal ribs intersecting the vertical ribs. This is the second feature.

さらに本発明は,第2の特徴に加えて,前記弁ケースを鋳造製としたことを第3の特徴とする。   Furthermore, in addition to the second feature, the present invention has a third feature that the valve case is made of cast metal.

さらにまた本発明は,第1〜第3の特徴の何れかに加えて,前記弁ケースを,全ての前記弁板に対して共通する単一部材となし,この弁ケースを,前記弁軸の軸方向に沿う両端部の2点で前記吸気マニフォルドに締結したことを第4の特徴とする。   Furthermore, in addition to any of the first to third features, the present invention provides the valve case as a single member common to all the valve plates, and the valve case is formed on the valve shaft. A fourth feature is that the intake manifold is fastened at two points along the axial direction.

本発明の第1の特徴によれば,弁ケース,弁軸及び弁板からなるバタフライ型開閉弁は,合成樹脂製の吸気マニフォルドとは別個に組み立てられるので,吸気マニフォルド及び開閉弁の並行組み立てが可能となり,装置の組立性向上を図ることができる。   According to the first feature of the present invention, the butterfly type on-off valve comprising the valve case, the valve shaft and the valve plate is assembled separately from the intake manifold made of synthetic resin, so that the intake manifold and the on-off valve can be assembled in parallel. This makes it possible to improve the assembly of the device.

しかも複数の締結箇所間での弁ケースの剛性が,複数の締結箇所間での吸気マニフォルドの剛性より大となっているから,弁ケース及び吸気マニフォルド間の締結時,その両者の突き合わせ面に多少の製作誤差があっても,締結力により吸気マニフォルド側に歪みが生じることになり,したがって弁ケースには殆ど歪みが発生せず,吸気マニフォルド及び弁軸間の摩擦抵抗の増加が回避させ,アクチュエータによる弁軸のスムーズな回転作動を常に確保することができる。   In addition, the rigidity of the valve case between the multiple fastening points is greater than the rigidity of the intake manifold between the multiple fastening points. Even if there is an error in manufacturing, there will be distortion on the intake manifold side due to the fastening force, so there will be almost no distortion in the valve case, and an increase in frictional resistance between the intake manifold and the valve shaft will be avoided. It is possible to always ensure a smooth rotation operation of the valve shaft due to.

本発明の第2の特徴によれば,複数の締結箇所間での弁ケースの剛性を効果的に増強させて,弁ケース及び吸気マニフォルド間の締結時の弁ケースの歪みを確実に防ぐことができる。   According to the second feature of the present invention, it is possible to effectively increase the rigidity of the valve case between a plurality of fastening points, and to reliably prevent distortion of the valve case when fastening between the valve case and the intake manifold. it can.

本発明の第3の特徴によれば,複数の締結箇所間での弁ケースの剛性をより効果的に増強させることができる。   According to the 3rd characteristic of this invention, the rigidity of the valve case between several fastening locations can be increased more effectively.

本発明の第4の特徴によれば,単一の弁ケースは,その両端の2点で吸気マニフォルドに締結されるので,弁ケースの複数の弁孔を,上記締結部に邪魔されることなく相互に近接配置することが可能となり,弁ケース,延いては吸気マニフォルドのコンパクト化を図ることができる。   According to the fourth aspect of the present invention, since the single valve case is fastened to the intake manifold at two points on both ends thereof, the plurality of valve holes of the valve case are not obstructed by the fastening portion. It becomes possible to arrange them close to each other, and the valve case, and thus the intake manifold, can be made compact.

本発明の実施の形態を,添付図面に示す本発明の実施例に基づいて以下に説明する。   DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on examples of the present invention shown in the accompanying drawings.

図1は本発明の実施例に係る吸気制御装置をエンジンへの取り付け状態で示す側面図,図2は図1の2−2線断面図,図3は図1の3矢視図,図4は図1の4−4線断面図,図5は図2の5−5線断面図(低速吸気モードの吸気マニフォルド内部を示す。),図6は高速吸気モードの吸気マニフォルド内部を示す,図5との対応図,図7は吸気マニフォルドの第1ブロックの内側面,図8は吸気マニフォルドの第2ブロックの内側面,図9は図7の9−9線断面図,図10は吸気マニフォルド内に設置されるバタフライ型開閉弁の底面図,図11は同開閉弁の側面図である。   1 is a side view showing an intake control device according to an embodiment of the present invention attached to an engine, FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1, FIG. 3 is a view taken along arrow 3 of FIG. 1 is a cross-sectional view taken along line 4-4 of FIG. 1, FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. 2 (showing the inside of the intake manifold in the low-speed intake mode), and FIG. FIG. 7 is an inner surface of the first block of the intake manifold, FIG. 8 is an inner surface of the second block of the intake manifold, FIG. 9 is a sectional view taken along line 9-9 in FIG. 7, and FIG. FIG. 11 is a side view of the on-off valve. FIG.

先ず,図1〜図3において,エンジンEのシリンダヘッドEhに合成樹脂製の吸気マニフォルドMが取り付けられる。この吸気マニフォルドMは,図示例では4気筒エンジン用であり,エンジンEのシリンダヘッドEhに複数の締結ボルト2,2…により締結される取り付けフランジ部1と,この取り付けフランジ部1の一端部の外側方にそれと角度をなして(図示例では略直角に)配置され,スロットルボディTが取り付けられる小フランジ部3と,この小フランジ部3から下方に延びる短管部4と,この短管部4の下端部に連結されるタンク部5と,このタンク部5の下部から延出し且つタンク部5の背面に沿って上方に延びて取り付けフランジ部1に連結されると共に,相互に連結される4本の管路部6,6…とを備えており,タンク部5及び管路部6,6…は,それらの間の境界壁を共有している。上記タンク部5は,前記締結ボルト2,2…の装着経路を避けて,取り付けフランジ部1の下方に配置される。   1 to 3, a synthetic resin intake manifold M is attached to a cylinder head Eh of the engine E. The intake manifold M is for a four-cylinder engine in the illustrated example, and includes an attachment flange portion 1 fastened to a cylinder head Eh of the engine E by a plurality of fastening bolts 2, 2, and one end portion of the attachment flange portion 1. A small flange portion 3 which is disposed outwardly and at an angle (substantially at right angles in the illustrated example) to which the throttle body T is attached, a short pipe portion 4 extending downward from the small flange portion 3, and the short pipe portion 4 and a tank part 5 connected to the lower end part of the tank 4 and extending from the lower part of the tank part 5 and extending upward along the back surface of the tank part 5 to be connected to the mounting flange part 1 and to each other. .. Are provided, and the tank part 5 and the pipe parts 6, 6... Share a boundary wall therebetween. The tank portion 5 is disposed below the mounting flange portion 1 while avoiding the mounting path of the fastening bolts 2, 2.

図1〜図5に示すように,小フランジ部3の端面には,スロットルボディTの吸気道に連なる空気入口7が,また取り付けフランジ部1の端面には,シリンダヘッドEhの4本の吸気ポートにそれぞれ連なる4つの空気出口8,8…がそれぞれ開口する。短管部4には,空気入口7に一端を連ねる導入路9が形成され,タンク部5には,導入路9の他端に連なる大容積のサージ室10が形成され,管路部6,6…には,サージ室10を空気出口8,8…に連通させる第1吸気路11,11…が形成される。   As shown in FIGS. 1 to 5, an air inlet 7 connected to the intake passage of the throttle body T is provided at the end face of the small flange portion 3, and four intake air of the cylinder head Eh is provided at the end face of the mounting flange portion 1. Four air outlets 8, 8... Respectively connected to the ports are opened. The short pipe portion 4 is formed with an introduction passage 9 that is connected to one end of the air inlet 7, and the tank portion 5 is formed with a large volume surge chamber 10 that is connected to the other end of the introduction passage 9. 6... Are formed with first intake passages 11 that communicate the surge chamber 10 with the air outlets 8.

またタンク部5には,サージ室10を第1吸気路11,11…の途中に連通させて,第1吸気路11,11…の下流側部分を,それ自身の下流側部分とする4本の第2吸気路12,12…が形成される。したがって,第2吸気路12,12…は,サージ室10から空気出口8,8…に至る流路長が,第1吸気路11,11…の流路長より短くなっている。   In the tank portion 5, the surge chamber 10 is communicated in the middle of the first intake passages 11, 11,..., And the downstream portion of the first intake passages 11, 11,. Are formed. Therefore, the flow path length from the surge chamber 10 to the air outlets 8, 8... Is shorter than the flow path length of the first intake paths 11, 11.

上記構成の吸気マニフォルドMの形成を容易にすべく,吸気マニフォルドMは,図8及び図9に示す少なくとも二つのブロック,即ち第1及び第2M1,M2に分けられて,それぞれ合成樹脂によりインジェクション成形される。その際,第1ブロックM1には,取り付けフランジ部1,短管部4の一半部,タンク部5の一半部及び管路部6,6…の入口部が形成される。第2ブロックM2には,小フランジ部3,短管部4の他半部,タンク部5の他半部及び管路部6,6…の残りの主要部が形成される。そして両ブロックM1,M2は,それらの分割面M1a,M2aで相互に振動溶着される。その際,第2ブロックM2の管路部6,6…は,それらの上端部が第1ブロックM1の取り付けフランジ部1に溶着されるのであるが,これら管路部6,6…は,前記締結ボルト2,2…の装着経路を避けて配置されている。   In order to facilitate the formation of the intake manifold M having the above-described configuration, the intake manifold M is divided into at least two blocks shown in FIGS. 8 and 9, that is, first and second M1 and M2, and each is formed by injection molding with a synthetic resin. Is done. At that time, the first block M1 is formed with an attachment flange portion 1, a half portion of the short tube portion 4, a half portion of the tank portion 5, and the inlet portions of the pipe portions 6, 6,. In the second block M2, the other half part of the small flange part 3, the short pipe part 4, the other half part of the tank part 5, and the remaining main parts of the pipe line parts 6, 6,. Both blocks M1 and M2 are vibration welded to each other at their divided surfaces M1a and M2a. At that time, the pipe sections 6, 6... Of the second block M2 have their upper ends welded to the mounting flange section 1 of the first block M1, but these pipe sections 6, 6,. It is arrange | positioned avoiding the mounting | wearing path | route of fastening bolt 2,2, ....

ところで,図7に示すように,取り付けフランジ部1とタンク部5とは,これらの一端部側に配置される短管部4を介して相互に連結されるので,タンク部5は,取り付けフランジ部1から大きくオーバハングすることになるので,第1ブロックM1において,短管部4と反対側で取り付けフランジ部1及びタンク部5間を連結する一対の架橋部13が一体に形成される(図5,図7及び図9参照)。この架橋部13は,その曲げ剛性を極力高めるべく,断面形状がコ字状になっている。而して,短管部4も取り付けフランジ部1及びタンク部5間の一端部同士を一体に連結する架橋部を兼ねることになる。   By the way, as shown in FIG. 7, the mounting flange portion 1 and the tank portion 5 are connected to each other via a short pipe portion 4 disposed on one end side thereof. As a result, the first block M1 is integrally formed with a pair of bridging portions 13 that connect the mounting flange portion 1 and the tank portion 5 on the opposite side of the short tube portion 4 (FIG. 1). 5, see FIGS. 7 and 9. The bridging portion 13 has a U-shaped cross section so as to increase the bending rigidity as much as possible. Thus, the short tube portion 4 also serves as a bridging portion that integrally connects one end portions between the mounting flange portion 1 and the tank portion 5.

図4,図5及び図8に示すように,第2ブロックM2において,タンク部5の内壁には,第2吸気路12,12…の入口を一斉に開閉するバタフライ型の開閉弁Vが設置される。この開閉弁Vは,第2吸気路12,12…の入口に配置される共通の弁ケース15を備える。この弁ケース15は,アルミニューム等の軽合金を素材とした鋳造製であり,第2吸気路12,12…の入口に連なるように,第2吸気路12,12…の配列方向に一列に並ぶ四つの楕円状の弁孔16,16…を有しており,これら弁孔16,16…を横断するように配置される一本の弁軸17が弁ケース15に回転自在に支承される。したがって,弁ケース15の端壁,並びに各弁孔16,16…間の隔壁には弁軸17を支承する軸受孔18,18…が形成されている。   As shown in FIGS. 4, 5 and 8, in the second block M <b> 2, a butterfly type on-off valve V that opens and closes the inlets of the second intake passages 12, 12. Is done. This on-off valve V includes a common valve case 15 disposed at the inlet of the second intake passages 12, 12. The valve case 15 is made of a light alloy such as aluminum, and is lined up in the arrangement direction of the second intake passages 12, 12, so as to be connected to the inlets of the second intake passages 12, 12. Four oval valve holes 16, 16... Are arranged side by side, and one valve shaft 17 arranged so as to cross the valve holes 16, 16. . Therefore, bearing holes 18, 18... For supporting the valve shaft 17 are formed in the end wall of the valve case 15 and the partition walls between the valve holes 16, 16..

弁軸17には,各弁孔16,16…において楕円状の複数の弁板19,19…がビス23,23により固着され,弁軸17の往復回動により弁板19,19…が対応する弁孔16,16…を開閉するようになっている。こうして構成される開閉弁Vは,吸気マニフォルドMとは別個に組み立てられるものである。   A plurality of elliptical valve plates 19, 19... Are fixed to the valve shaft 17 by screws 23, 23 in each valve hole 16, 16..., And the valve plates 19, 19. Are opened and closed. The on-off valve V configured in this way is assembled separately from the intake manifold M.

図4に明示するように,第2ブロックM2には,第2吸気路12,12…の配列方向に沿う両側に配置されて第2ブロックM2の内方に突出する一対の支持ボス20,20が一体に形成されており,各支持ボス20,20は,その中心部を貫通するボルト孔20a,20aを有する。   As clearly shown in FIG. 4, the second block M2 includes a pair of support bosses 20, 20 that are disposed on both sides along the arrangement direction of the second intake passages 12, 12, and protrude inward of the second block M <b> 2. Are integrally formed, and each of the support bosses 20 and 20 has bolt holes 20a and 20a penetrating the central portion thereof.

一方,弁ケース15の,弁軸17の軸線方向に沿う長手方向両端部の一側面には,上記支持ボス20,20と端面同士を当接させる一対の連結ボス21,21が一体に形成され,各連結ボス21,21は,その中心部に前記ボルト孔20a,20aと合致する袋状のねじ孔21a,21aを有する。そして,第2ブロックM2の外方からボルト孔20a,20aに挿通した締結ボルト22,22をねじ孔21a,21aに螺合緊締することにより,弁ケース15は第2ブロックM2の内壁に締結される。   On the other hand, a pair of connecting bosses 21, 21 that abut the end surfaces of the support bosses 20, 20 are integrally formed on one side surface of the valve case 15 along the axial direction of the valve shaft 17. Each connecting boss 21, 21 has a bag-like screw hole 21 a, 21 a that matches the bolt hole 20 a, 20 a at the center thereof. The valve case 15 is fastened to the inner wall of the second block M2 by screwing and tightening the fastening bolts 22 and 22 inserted into the bolt holes 20a and 20a from the outside of the second block M2 into the screw holes 21a and 21a. The

図10及び図11に明示するように,弁ケース15の両外側面には,弁軸17の軸方向に延びて一対の連結ボス21,21間に亙る複数条の縦リブ24,24…と,これら縦リブ24,24…と交差する複数条の横リブ25,25…とが一体に形成され,これらリブ24,24…;25,25…によって,弁ケース15の,一対の連結ボス21,21間での剛性が強化され,その剛性は,第2ブロックM2の,一対の支持ボス20,20間での剛性より大とされる。   As clearly shown in FIGS. 10 and 11, on both outer surfaces of the valve case 15, a plurality of vertical ribs 24, 24... Extending in the axial direction of the valve shaft 17 and extending between the pair of connecting bosses 21, 21. A plurality of transverse ribs 25, 25 ... intersecting with the longitudinal ribs 24, 24 ... are integrally formed, and the ribs 24, 24 ...; , 21 is reinforced, and the rigidity of the second block M2 is greater than that between the pair of support bosses 20, 20.

再び図1及び図4において,第2ブロックM2の一端壁には,開閉弁Vの,タンク部5内への挿入を可能にする挿入口27が開口しており,この挿入口27を閉じる蓋体28が複数のボルト29,29…で第2ブロックM2に締結される。蓋体28は,弁軸17の一端部に連結してそれを回転作動する,減速機構付きの電動モータ30が付設される。   In FIGS. 1 and 4 again, an insertion port 27 that allows the on-off valve V to be inserted into the tank unit 5 is opened at one end wall of the second block M2, and a lid for closing the insertion port 27 is opened. The body 28 is fastened to the second block M2 with a plurality of bolts 29, 29. The lid body 28 is provided with an electric motor 30 with a speed reduction mechanism that is connected to one end portion of the valve shaft 17 and rotates it.

次に,この実施例の作用について説明する。   Next, the operation of this embodiment will be described.

エンジンEの低速運転時には,電動モータ30により開閉弁Vが閉弁状態に保持される。即ち,弁板19,19…により弁孔16,16…を閉じて第2吸気路12,12…の入口を閉鎖する。その結果,エンジンEの各気筒の吸気行程では,スロットルボディTで流量を制御された空気は,導入路9を経てサージ室10に流入すると,流路長が長い第1吸気路11,11…を通してエンジンEに供給されることになる。したがって吸気マニフォルドMの内部は低速運転に適応する低速吸気モードとなり,エンジンEの低速出力性能を高めることができる。またエンジンEの高速運転時には,電動モータ30により開閉弁Vが開弁状態に切り換えられ,弁板19,19…により弁孔16,16…を開いて,第2吸気路12,12…を導通通態にする。その結果,エンジンEの各気筒の吸気行程では,スロットルボディTで流量を制御された空気は,導入路9を経てサージ室10に流入すると,主として流路長が短い第2吸気路12,12…を通してエンジンEに供給されることになる。したがって吸気マニフォルドMの内部は高速運転に適応する高速吸気モードとなり,エンジンEの高速出力性能を高めることができる。   During the low speed operation of the engine E, the open / close valve V is held closed by the electric motor 30. That is, the valve holes 16, 16 ... are closed by the valve plates 19, 19 ..., and the inlets of the second intake passages 12, 12 ... are closed. As a result, in the intake stroke of each cylinder of the engine E, when the air whose flow rate is controlled by the throttle body T flows into the surge chamber 10 through the introduction passage 9, the first intake passages 11, 11,. To be supplied to the engine E. Therefore, the inside of the intake manifold M becomes a low-speed intake mode adapted to low-speed operation, and the low-speed output performance of the engine E can be enhanced. When the engine E is operating at high speed, the open / close valve V is switched to the open state by the electric motor 30, and the valve holes 16, 16 ... are opened by the valve plates 19, 19 ... to conduct the second intake passages 12, 12, ... Putting it into communication. As a result, in the intake stroke of each cylinder of the engine E, when the air whose flow rate is controlled by the throttle body T flows into the surge chamber 10 through the introduction path 9, the second intake paths 12, 12 mainly having a short flow path length. ... will be supplied to the engine E through. Therefore, the inside of the intake manifold M becomes a high-speed intake mode adapted for high-speed operation, and the high-speed output performance of the engine E can be enhanced.

このようなエンジン用吸気制御装置の組み立てに当たっては,吸気マニフォルドM及び開閉弁Vをそれぞれ別工程で組み立てた後,開閉弁Vを吸気マニフォルドMの挿入口27からタンク部5内に収め,吸気マニフォルドMの外側から,支持ボス20,20のボルト孔20a,20aに挿通した締結ボルト22,22を,弁ケース15の連結ボス21,21のねじ孔21a,21aに螺合緊締し,次いで蓋体28を吸気マニフォルドMに接合して挿入口を閉鎖すると共に,弁軸17を蓋体28上の電動モータ30に連結して組み立てを完了する。このように,吸気マニフォルドM及び開閉弁Vの並行組み立てを行うことで,装置の組立性は著しく向上する。   In assembling such an intake control device for an engine, after the intake manifold M and the on-off valve V are assembled in separate processes, the on-off valve V is placed in the tank portion 5 from the insertion port 27 of the intake manifold M, and the intake manifold is From the outside of M, the fastening bolts 22 and 22 inserted into the bolt holes 20a and 20a of the support bosses 20 and 20 are screwed and tightened into the screw holes 21a and 21a of the connecting bosses 21 and 21 of the valve case 15, and then the lid body. 28 is joined to the intake manifold M to close the insertion port, and the valve shaft 17 is connected to the electric motor 30 on the lid 28 to complete the assembly. Thus, by assembling the intake manifold M and the on-off valve V in parallel, the assembly of the device is significantly improved.

しかも,弁ケース15の締結ボルト22,22による吸気マニフォルドMへの締結箇所は,弁ケース15の両端部の二箇所であるから,これら締結箇所に邪魔されることなく四つの弁孔16,16…を相互に近接配置することが可能となり,弁ケース15,延いては吸気マニフォルドMのコンパクト化を図ることができる。   Moreover, since the fastening points 22 and 22 of the valve case 15 are fastened to the intake manifold M at the two ends of the valve case 15, the four valve holes 16 and 16 are not obstructed by these fastening points. Can be arranged close to each other, and the valve case 15 and thus the intake manifold M can be made compact.

また弁ケース15には,弁軸17の軸方向に延びて一対の連結ボス21,21間に亙る複数条の縦リブ24,24…と,これら縦リブ24,24…と交差する複数条の横リブ25,25…とを一体に形成して,弁ケース15の,一対の連結ボス21,21間での剛性を,吸気マニフォルドMの,一対の支持ボス20,20間での剛性より大としてあるから,支持ボス20,20及び連結ボス21,21間の締結ボルト22,22による締結時,両ボス20,21の突き合わせ面の平行度等につき,多少の製作誤差があっても,締結力により吸気マニフォルドM側に歪みが生じることになり,したがって弁ケース15には殆ど歪みが発生せず,軸受孔18,18…の変形や軸受孔18,18…相互の位置ずれを防ぐことができるので,弁軸17と軸受孔18,18…の内周面との摩擦抵抗の増加が回避させ,電動モータ30による弁軸17のスムーズな回転作動を常に確保することができる。   Further, the valve case 15 includes a plurality of vertical ribs 24 extending in the axial direction of the valve shaft 17 and extending between the pair of connecting bosses 21, 21, and a plurality of strips intersecting the vertical ribs 24, 24. The lateral ribs 25, 25... Are integrally formed so that the rigidity of the valve case 15 between the pair of connecting bosses 21, 21 is larger than the rigidity of the intake manifold M between the pair of support bosses 20, 20. Therefore, when the fastening bosses 22 and 22 between the support bosses 20 and 20 and the connecting bosses 21 and 21 are fastened, even if there is a slight manufacturing error regarding the parallelism of the butted surfaces of both bosses 20 and 21 As a result, the intake manifold M side is distorted by the force, so that the valve case 15 is hardly distorted, and the deformation of the bearing holes 18, 18... And the mutual displacement of the bearing holes 18, 18. Because it can, valve stem 17 Increase in the frictional resistance between the bearing hole 18, 18 ... inner circumferential surface of is avoided, the smooth rotation operation of the valve shaft 17 by the electric motor 30 can be always secured.

またサージ室10を形成するタンク部5は,エンジンEのシリンダヘッドEhに複数の締結ボルト2,2…により締結される取り付けフランジ部1に対し,上記締結ボルト2,2…の装着経路を避けて取り付けフランジ部1の下方に配置されるので,このタンク部5に邪魔されることなく,取り付けフランジ部1をシリンダヘッドEhに容易に取り付けることができる。しかも取り付けフランジ部1及びタンク部5には,その両者2,5の両端部同士を連結する架橋部4,13が一体に形成され,特に,一方の架橋部4は,スロットルボディTからタンク部5内のサージ室10に空気を導入するための導入路9を形成する高剛性の短管部4で構成されるので,取り付けフランジ部1のシリンダヘッドEhへの取り付け状態では,取り付けフランジ部1は,架橋部4,13を介してタンク部5を強固に支持することができる。したがって,エンジンEの運転中,タンク部5の振動をよく防いで,騒音の発生抑制すると共に,振動による各部の耐久性の低下を防ぐことができ,しかも短管部4が架橋部を兼ねることで構造の簡素化をもたらすことになる。   Further, the tank portion 5 forming the surge chamber 10 avoids the mounting path of the fastening bolts 2, 2,... With respect to the mounting flange portion 1 fastened to the cylinder head Eh of the engine E by the plurality of fastening bolts 2, 2,. Therefore, the mounting flange portion 1 can be easily attached to the cylinder head Eh without being obstructed by the tank portion 5. In addition, the mounting flange portion 1 and the tank portion 5 are integrally formed with bridging portions 4 and 13 for connecting both ends of the two and 5, respectively. In particular, one bridging portion 4 is formed from the throttle body T to the tank portion. 5 is composed of a high-rigidity short pipe portion 4 that forms an introduction path 9 for introducing air into the surge chamber 10 in the interior 5, so that when the mounting flange portion 1 is attached to the cylinder head Eh, the mounting flange portion 1 Can firmly support the tank portion 5 via the bridging portions 4 and 13. Therefore, during the operation of the engine E, the vibration of the tank part 5 can be well prevented, the generation of noise can be suppressed, the durability of each part can be prevented from being lowered due to the vibration, and the short pipe part 4 can also serve as a bridging part. This will simplify the structure.

また他方の架橋部13は,断面コ字状のものを一対並べて構成されるので,その剛性を短管部4の剛性と釣り合わせることができ,取り付けフランジ部1によるタンク部5の支持を一層強固なものとすることができる。   Further, the other bridging portion 13 is formed by arranging a pair of U-shaped cross-sections, so that the rigidity can be balanced with the rigidity of the short pipe portion 4, and the mounting flange portion 1 can further support the tank portion 5. It can be strong.

そして,このような短管部4及び架橋部13は,断面積が比較的大きいため,吸気マニフォルドMのインジェクション成形時には,溶融樹脂が取り付けフランジ部1から短管部4及び架橋部13を通してタンク部5全体に流れ込むことになり,成形性を向上させることができる。   And since such a short pipe part 4 and the bridge | bridging part 13 have a comparatively large cross-sectional area, at the time of injection molding of the intake manifold M, a molten resin passes through the short pipe part 4 and the bridge | bridging part 13 from the attachment flange part 1, and a tank part. 5 will flow into the whole, and the moldability can be improved.

本発明は上記実施例に限定されるものではなく,その要旨を逸脱しない範囲で種々の設計変更が可能である。例えば,本発明は,上記4気筒以外の多気筒エンジン用にも適用することができる。   The present invention is not limited to the above embodiment, and various design changes can be made without departing from the scope of the invention. For example, the present invention can be applied to a multi-cylinder engine other than the above-described four cylinders.

本発明の吸気制御装置をエンジンへの取り付け状態で示す側面図。The side view which shows the intake control apparatus of this invention in the attachment state to an engine. 図1の2−2線断面図。FIG. 2 is a sectional view taken along line 2-2 in FIG. 1. 図1の3矢視図。FIG. 3 is a view taken in the direction of arrow 3 in FIG. 1. 図1の4−4線断面図。FIG. 4 is a sectional view taken along line 4-4 of FIG. 図2の5−5線断面図(低速吸気モードの吸気マニフォルド内部を示す。)。FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. 高速吸気モードの吸気マニフォルド内部を示す,図5との対応図。FIG. 6 is a view corresponding to FIG. 5 showing the inside of the intake manifold in the high-speed intake mode. 吸気マニフォルドの第1ブロックの内側面。Inner side of the first block of the intake manifold. 吸気マニフォルドの第2ブロックの内側面。Inner side of the second block of the intake manifold. 図7の9−9線断面図。FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 7. 吸気マニフォルド内に設置されるバタフライ型開閉弁の底面図。The bottom view of the butterfly type on-off valve installed in the intake manifold. 同開閉弁の側面図。The side view of the on-off valve.

符号の説明Explanation of symbols

E・・・・・エンジン
M・・・・・吸気マニフォルド
V・・・・・バタフライ型開閉弁
12・・・・吸気路(第2吸気路) 15・・・・弁ケース
16・・・・弁孔
17・・・・弁軸
18・・・・軸受孔
19・・・・弁板
20・・・・支持ボス
21・・・・連結ボス
22・・・・締結部材(締結ボルト)
24・・・・縦リブ
25・・・・横リブ
30・・・・アクチュエータ(電動モータ)
E ... Engine M ... Intake manifold V ... Butterfly type on-off valve 12 ... Intake passage (second intake passage) 15 ... Valve case 16 ... Valve hole 17 ... Valve shaft 18 ... Bearing hole 19 ... Valve plate 20 ... Support boss 21 ... Connection boss 22 ... Fastening member (fastening bolt)
24 ··· Vertical rib 25 ··· Horizontal rib 30 ··· Actuator (electric motor)

Claims (4)

合成樹脂製の吸気マニフォルド(M)と,この吸気マニフォルド(M)内に設置され,この吸気マニフォルド(M)内の複数の吸気路(12,12…)を開閉することで,吸気マニフォルド(M)内をエンジン(E)の低速運転に適応する低速吸気モードと高速運転に適応する高速吸気モードとに切り換え得るバタフライ型の開閉弁(V)と,この開閉弁(V)を作動するアクチュエータ(30)とを備える,エンジン用吸気制御装置において,
前記開閉弁(V)を,複数の弁孔(16,16…)を有すると共に,これら弁孔(16,16…)が前記吸気路(12,12…)に連なるように前記吸気マニフォルド(M)の内壁に締結部材(22)により複数箇所で締結される弁ケース(15)と,前記弁孔(16,16…)を横断しながら前記弁ケース(15)に回転自在に支承されると共に,前記アクチュエータ(30)に連結される弁軸(17)と,この弁軸(17)に取り付けられて前記弁孔(16,16…)を開閉する複数の弁板(19,19…)とで構成し,前記複数の締結箇所間での前記弁ケース(15)の剛性を,前記複数の締結箇所間での前記吸気マニフォルド(M)の剛性より大としたことを特徴とする,エンジン用吸気制御装置。
An intake manifold (M) made of synthetic resin and an intake manifold (M) installed in the intake manifold (M) and opening and closing a plurality of intake passages (12, 12,...) In the intake manifold (M) ) Butterfly type on-off valve (V) that can be switched between a low-speed intake mode adapted to low-speed operation of the engine (E) and a high-speed intake mode adapted to high-speed operation, and an actuator ( 30), an intake control device for an engine,
The on-off valve (V) has a plurality of valve holes (16, 16,...), And the intake manifold (M) such that these valve holes (16, 16...) Are connected to the intake passage (12, 12...). ) And a valve case (15) fastened to the inner wall by a fastening member (22), and rotatably supported by the valve case (15) while traversing the valve holes (16, 16,...) , A valve shaft (17) connected to the actuator (30), and a plurality of valve plates (19, 19 ...) attached to the valve shaft (17) for opening and closing the valve holes (16, 16 ...). The rigidity of the valve case (15) between the plurality of fastening points is made larger than the rigidity of the intake manifold (M) between the plurality of fastening points. Intake control device.
請求項1記載のエンジン用吸気制御装置において,
前記弁ケース(15)には,前記複数の締結箇所間に亙る複数条の縦リブ(24,24…)と,これら縦リブ(24,24…)と交差する複数条の横リブ(25,25…)とを一体に形成したことを特徴とする,エンジン用吸気制御装置。
The intake control apparatus for an engine according to claim 1,
The valve case (15) includes a plurality of vertical ribs (24, 24 ...) extending between the plurality of fastening points, and a plurality of horizontal ribs (25, 24 ...) intersecting the vertical ribs (24, 24 ...). 25 ...), and an intake control device for an engine.
請求項2記載のエンジン用吸気制御装置において,
前記弁ケース(15)を鋳造製としたことを特徴とする,エンジン用吸気制御装置。
The intake control apparatus for an engine according to claim 2,
An intake control device for an engine, wherein the valve case (15) is made of a casting.
請求項1〜3記載のエンジン用吸気制御装置において,
前記弁ケース(15)を,全ての前記弁板(19,19…)に対して共通する単一部材となし,この弁ケース(15)を,前記弁軸(17)の軸方向に沿う両端部の2点で前記吸気マニフォルド(M)に締結したことを特徴とする,エンジン用吸気制御装置。
The engine intake control device according to any one of claims 1 to 3,
The valve case (15) is formed as a single member common to all the valve plates (19, 19,...), And the valve case (15) is arranged at both ends along the axial direction of the valve shaft (17). An intake control device for an engine, wherein the intake manifold is fastened to the intake manifold (M) at two points.
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JP2003138944A (en) * 2001-10-29 2003-05-14 Honda Motor Co Ltd Intake device of v-internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008298054A (en) * 2007-06-04 2008-12-11 Honda Motor Co Ltd Engine air-intake controller
US7997247B2 (en) 2007-06-04 2011-08-16 Honda Motor Co., Ltd. Engine intake control system
JP2014136999A (en) * 2013-01-16 2014-07-28 Yanmar Co Ltd Engine device
JP2014231771A (en) * 2013-05-29 2014-12-11 アイシン精機株式会社 Intake system

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CN100473808C (en) 2009-04-01
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