JPS6155605B2 - - Google Patents
Info
- Publication number
- JPS6155605B2 JPS6155605B2 JP9297681A JP9297681A JPS6155605B2 JP S6155605 B2 JPS6155605 B2 JP S6155605B2 JP 9297681 A JP9297681 A JP 9297681A JP 9297681 A JP9297681 A JP 9297681A JP S6155605 B2 JPS6155605 B2 JP S6155605B2
- Authority
- JP
- Japan
- Prior art keywords
- roller
- throttle valve
- lever
- shaft
- valve opening
- 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
Links
- 239000010409 thin film Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
- F02M19/12—External control gear, e.g. having dash-pots
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Rolls And Other Rotary Bodies (AREA)
Description
【発明の詳細な説明】
本発明は内燃機関の出力制御に用いられる吸気
絞り弁の開閉装置に関するもので、その円滑な作
動を可能としてその損傷を極力防止することを目
的とするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an opening/closing device for an intake throttle valve used for output control of an internal combustion engine, and an object of the present invention is to enable smooth operation of the valve and to prevent damage to the valve as much as possible.
内燃機関の吸気絞り弁の開閉装置の通常の構造
は、車両運転者のアクセルの踏み込み量が、車両
に設けられたリンク機構又はケーブルを介して絞
り弁の軸に直接的に伝達され、絞り弁の開き角度
が決められる構成となつている。このような絞り
弁を用いた場合、アクセル踏み込み量と絞り弁開
き度の関係が一義的に決定されてしまい、車両加
速時の運転者の種々の要求に対して対応できない
欠点がある。この問題を解消するため、絞り弁本
体の一部分に、絞り弁開閉レバーに設けたカム溝
とこのカム溝に沿つて転動するローラより成る中
継部分を設け、このカム溝の形状によりアクセル
踏み込み量と絞り弁開き角度との関数関係を任意
に得ることができる構成とした吸気絞り弁が用い
られている。 The normal structure of an intake throttle valve opening/closing device for an internal combustion engine is that the amount of accelerator pedal depression by the vehicle driver is directly transmitted to the shaft of the throttle valve via a link mechanism or cable provided in the vehicle. The opening angle can be determined. When such a throttle valve is used, the relationship between the amount of depression of the accelerator and the degree of opening of the throttle valve is uniquely determined, and there is a drawback that the throttle valve cannot respond to the various demands of the driver when accelerating the vehicle. In order to solve this problem, we installed a relay part in a part of the throttle valve body, which consists of a cam groove provided on the throttle valve opening/closing lever and a roller that rolls along this cam groove. An intake throttle valve is used in which a functional relationship between the opening angle of the throttle valve and the opening angle of the throttle valve can be arbitrarily obtained.
そしてこの場合、前記ローラとして単一材料の
中空円筒部材を用いているが、このような構成で
はローラ外径とカム面及びローラ内径とローラ軸
との２個所で生ずる摩擦に差があり、ローラ内径
部での摩擦力が大きくなつた場合にローラの円滑
な回転が得られずローラはカム溝での摩耗が促進
される欠点がある。また単純な円筒形状のローラ
の場合には、ローラ中心とカム溝中心との傾きに
よりローラ外径がカム溝の端部に局部的に接触す
ることになり、異常な摩耗が生ずるという欠点が
ある。 In this case, a hollow cylindrical member made of a single material is used as the roller, but in such a configuration, there is a difference in friction between the roller outer diameter and the cam surface, and between the roller inner diameter and the roller shaft. When the frictional force at the inner diameter portion becomes large, smooth rotation of the roller cannot be obtained, and the roller has a drawback that wear in the cam groove is accelerated. In addition, in the case of a simple cylindrical roller, the inclination between the center of the roller and the center of the cam groove causes the outer diameter of the roller to come into local contact with the end of the cam groove, resulting in abnormal wear. .
本発明によればローラとローラ軸との間に低摩
擦係数を有する材料の薄膜を設けることにより、
ローラの円滑な回転を保証することができ、さら
にローラ外径形状を部分的な球面形状とすること
により、ローラ中心とカム溝中心とが傾いた場合
でも局部的な接触と異常摩耗を防止できるのであ
る。 According to the present invention, by providing a thin film of material having a low coefficient of friction between the roller and the roller shaft,
Smooth rotation of the roller can be guaranteed, and by making the outer diameter of the roller partially spherical, local contact and abnormal wear can be prevented even if the center of the roller and the center of the cam groove are tilted. It is.
本発明の構成をその図面に示す実施例に基づい
て説明する。 The configuration of the present invention will be explained based on the embodiments shown in the drawings.
絞り弁本体１に、絞り弁軸２が図示しない２個
の軸受を介して支持されており、この絞り弁軸２
に絞り弁２３がボルト２４により一体的に固定さ
れていて、絞り弁軸２の回動により絞り弁２３が
開閉するようになつている。３は絞り弁開閉レバ
ーであつてその一端を絞り弁軸２に圧入の後、さ
らにナツト３１により固定されている。絞り弁開
閉レバー３の一部にカム面３ａ，３ｂよりなるカ
ム溝が形成されている。このような構成により絞
り弁開閉レバー３、絞り弁軸２、絞り弁２３が一
体的に回動する構成となつている。 A throttle valve shaft 2 is supported by the throttle valve body 1 via two bearings (not shown).
A throttle valve 23 is integrally fixed to the throttle valve 23 by bolts 24, and the throttle valve 23 is opened and closed by rotation of the throttle valve shaft 2. Reference numeral 3 denotes a throttle valve opening/closing lever, one end of which is press-fitted into the throttle valve shaft 2 and further fixed with a nut 31. A cam groove consisting of cam surfaces 3a and 3b is formed in a part of the throttle valve opening/closing lever 3. With this configuration, the throttle valve opening/closing lever 3, the throttle valve shaft 2, and the throttle valve 23 are configured to rotate integrally.
一方中継軸１２が絞り弁本体１に圧入固定さ
れ、さらに抜け止めのためのピン２８が挿入され
完全に固定されている。中継レバー１１にはカラ
ー３２が鑞付け等により一体固定され、このカラ
ー３２内に圧入固定された軸受（図示しない）を
介して中継軸１２に対し回動できるように組付け
てあり、軸方向の位置を規制するためサークリツ
プ３６、ウエーブワツシヤ３５、ナイロンワツシ
ヤ３３，３４を用いている。ボールジヨイント１
３は中継レバー１１にカシメにより固定され、図
示しないアクセルの動きを中継レバー１１に伝え
る。また中継レバー１１にはローラ軸４が固定さ
れており、このローラ軸４に第３図に示すように
ローラ７が挿入され、ローラ７の内径部に接着固
定された低摩擦係数を有する材料の薄膜部８を介
してローラ軸４に対して回動自在となつている。
なお、薄膜部８の具体例としては４弗化エチレン
（通称テフロン）を主成分とするもので構成して
いるが、他には、油を含浸した焼結材よりなるリ
ング状の部材を用いてもよい。ローラ軸４にはサ
ークリツプ９及びピン１０を取り付けてローラ７
がローラ軸４より抜け出るのを防止している。ロ
ーラ７は絞り弁開閉レバー３に設けられたカム溝
の一方の面３ａに当接しており、ローラ７に対し
て絞り弁開閉レバー３が相対的に傾斜しても端部
で局部的に接触しないよう外径部が部分的な球面
をなしている。またローラ７は錆を防止するため
ステンレス材により作られており、絞り弁開閉レ
バー３と同様に熱処理を行なつている。 On the other hand, the relay shaft 12 is press-fitted into the throttle valve body 1, and a pin 28 for preventing it from coming off is inserted and completely fixed. A collar 32 is integrally fixed to the relay lever 11 by brazing or the like, and is assembled so as to be rotatable relative to the relay shaft 12 via a bearing (not shown) press-fitted into the collar 32. A circlip 36, a wave washer 35, and nylon washers 33 and 34 are used to regulate the position of the cylindrical part. ball joint 1
3 is fixed to the relay lever 11 by caulking, and transmits the movement of an accelerator (not shown) to the relay lever 11. Further, a roller shaft 4 is fixed to the relay lever 11, and a roller 7 is inserted into this roller shaft 4 as shown in FIG. It is rotatable with respect to the roller shaft 4 via the thin film portion 8 .
Note that a specific example of the thin film portion 8 is made of a material whose main component is tetrafluoroethylene (commonly known as Teflon), but a ring-shaped member made of sintered material impregnated with oil may also be used. It's okay. A circlip 9 and a pin 10 are attached to the roller shaft 4, and the roller 7
This prevents the roller from slipping out from the roller shaft 4. The roller 7 is in contact with one surface 3a of a cam groove provided in the throttle valve opening/closing lever 3, and even if the throttle valve opening/closing lever 3 is tilted relative to the roller 7, it will locally contact at the end. The outer diameter part is partially spherical to prevent this. Further, the roller 7 is made of stainless steel to prevent rust, and is heat treated in the same manner as the throttle valve opening/closing lever 3.
中継レバー１１の一部に突出部１５が設けられ
ており、アクセル全開になつた時絞り弁本体１に
固定されたストツパ１４にこの突出部１５が当る
ことにより、絞り弁２３の開き角度を規制してい
る。 A protrusion 15 is provided on a part of the relay lever 11, and when the accelerator is fully opened, the protrusion 15 hits a stopper 14 fixed to the throttle valve body 1, thereby regulating the opening angle of the throttle valve 23. are doing.
引張りコイルスプリング１７が、絞り弁本体１
に固定されたダツシユポツト１６と絞り弁開閉レ
バー３との間に掛けられ、また捩りコイルスプリ
ング２７が絞り弁開閉レバー３と絞り弁本体１と
の間に掛けられ、これらのスプリングは種々の摩
擦に打ち勝つて絞り弁２３を全閉位置に戻すのに
必要にして十分なバネ力を有している。また中継
軸１２と中継レバー１１との間に発生する摩擦ト
ルクに打ち勝つための比較的弱いバネ力を有する
捩りコイルスプリング２６が、絞り弁本体と中継
レバー１１との間に掛けられている。 The tension coil spring 17 is attached to the throttle valve body 1
A torsion coil spring 27 is hung between the dart pot 16 fixed to the throttle valve opening/closing lever 3 and the throttle valve body 1, and these springs are It has sufficient spring force to overcome the problem and return the throttle valve 23 to the fully closed position. Further, a torsion coil spring 26 having a relatively weak spring force to overcome the frictional torque generated between the relay shaft 12 and the relay lever 11 is hung between the throttle valve body and the relay lever 11.
絞り弁開閉レバー３の一部に設けられた雌ねじ
部にボルト５が組込んであつて、ナツト６で固定
されるようになつており、ボルト５の頭部が中継
レバー１１と当接し、ナツト６の回動によりその
当接の度合を調節可能としている。 A bolt 5 is assembled into a female thread provided in a part of the throttle valve opening/closing lever 3, and is fixed with a nut 6. The head of the bolt 5 abuts the relay lever 11, and the nut The degree of contact can be adjusted by rotating 6.
スクリユー１９は絞り弁の全閉位置を決定する
ための調整ボルトであり、絞り弁本体１に取り付
けられており、その先端が絞り弁開閉レバー３の
一部に当接している。 The screw 19 is an adjustment bolt for determining the fully closed position of the throttle valve, and is attached to the throttle valve main body 1, with its tip abutting a part of the throttle valve opening/closing lever 3.
なお２１は負圧検出用チユーブ、２２は同チユ
ーブの抜け出し防止用部材であつて、絞り弁本体
１にねじ固定されている。２５は絞り弁開度検出
器、２９は絞り弁部をバイパスする空気流量を調
節するための調整スクリユー、３０はこの調整ス
クリユーと絞り弁本体１との間に組み込まれて調
整スクリユー２９の洩れと弛みを防止するＯリン
グである。 Note that 21 is a tube for detecting negative pressure, and 22 is a member for preventing the tube from coming off, which is fixed to the throttle valve body 1 with a screw. 25 is a throttle valve opening degree detector; 29 is an adjustment screw for adjusting the flow rate of air bypassing the throttle valve section; 30 is installed between this adjustment screw and the throttle valve body 1 to prevent leakage of the adjustment screw 29; This is an O-ring that prevents loosening.
つぎに本発明の作用をその実施例に基づいて説
明する。 Next, the operation of the present invention will be explained based on examples thereof.
運転者の意志により駆動されるアクセルの動き
は車両に設けられているリンク機構又はケーブル
を介してボールジヨイント１３に伝達され、これ
により中継レバー１１、中継レバー１１に一体固
定されたローラ軸４及び同軸に回動可能に支持さ
れたローラ７が、中継軸１２を中心として第１図
に示すＡ方向に回転する。このローラ７の動きは
ローラ７の当接しているカム面３ａを介して絞り
弁開閉レバー３に伝えられ、同レバー３は絞り弁
軸２を中心として第１図におけるＢ方向に回転
し、絞り弁開閉レバー３、絞り弁軸２、絞り弁２
３は一体結合しているので、結果的に絞り弁２３
の回転角は絞り弁開閉レバー３のＢ方向の回転角
と同一となる。そして中継レバー回転角と絞り弁
回転角との関数関係は、絞り弁開閉レバー３に設
けたカム溝３ａ，３ｂの形状を変えることにより
第４図に示すように任意に選ぶことが可能とな
り、運転者の種々の要求に対応できるものとな
る。このように、アクセルの動きを中継レバー１
１から絞り弁開閉レバー３に伝達するに当り、本
発明では、ローラ７は、同ローラの内径部に接着
固定された低摩擦係数を有する材料の薄膜８を介
してローラ軸４に対し回動させる構造となつてい
るため、常にローラ内径部の摩擦力を外径部の摩
擦力より小さく保つことによりローラ７の円滑な
回転が得られ、ローラ７及びカム面３ａの摩耗を
防ぐことができる。 The movement of the accelerator driven by the driver's will is transmitted to the ball joint 13 via a link mechanism or cable provided in the vehicle, and thereby the relay lever 11 and the roller shaft 4 integrally fixed to the relay lever 11. A roller 7 rotatably supported on the same axis rotates about the relay shaft 12 in the direction A shown in FIG. This movement of the roller 7 is transmitted to the throttle valve opening/closing lever 3 via the cam surface 3a that the roller 7 is in contact with, and the lever 3 rotates in the direction B in FIG. Valve opening/closing lever 3, throttle valve shaft 2, throttle valve 2
3 are integrally connected, so as a result, the throttle valve 23
The rotation angle is the same as the rotation angle of the throttle valve opening/closing lever 3 in the B direction. The functional relationship between the relay lever rotation angle and the throttle valve rotation angle can be arbitrarily selected as shown in FIG. 4 by changing the shape of the cam grooves 3a and 3b provided on the throttle valve opening/closing lever 3. This makes it possible to meet the various demands of drivers. In this way, the movement of the accelerator is relayed to lever 1.
1 to the throttle valve opening/closing lever 3, in the present invention, the roller 7 rotates relative to the roller shaft 4 via a thin film 8 of a material with a low coefficient of friction adhesively fixed to the inner diameter of the roller. Since the structure is such that the frictional force on the inner diameter portion of the roller is always kept smaller than the frictional force on the outer diameter portion, smooth rotation of the roller 7 can be obtained, and wear on the roller 7 and the cam surface 3a can be prevented. .
さらにローラ７の外径部を部分的な球面形状と
することにより、ローラ７に対して絞り弁開閉レ
バー３、カム面３ａが相対的に傾斜してもカム面
３ａの端部で生ずる局部的な接触を防ぎ摩耗を防
止できる。 Furthermore, by forming the outer diameter part of the roller 7 into a partially spherical shape, even if the throttle valve opening/closing lever 3 and the cam surface 3a are inclined relative to the roller 7, the localized This prevents contact and wear.
なお、ローラ軸４とローラ内径との転動面に設
ける低摩擦係数を有する材料の薄膜部は、ローラ
内径部又はローラ軸の外径部のどちらに設けても
よいことは勿論である。 It goes without saying that the thin film portion made of a material having a low coefficient of friction and provided on the rolling surface between the roller shaft 4 and the inner diameter of the roller may be provided on either the inner diameter of the roller or the outer diameter of the roller shaft.
さらにこの薄膜の固定は本実施例では接着又は
リング状の部材を圧入する方法によるものとした
が、これ以外に焼付け等によるコーテイング膜の
形成方法によることも可能である。 Further, in this embodiment, the thin film is fixed by adhesion or by press-fitting a ring-shaped member, but other methods such as baking or the like may be used to form the coating film.
本発明は以上のような構成を有するものである
から、ローラの内径転動面の摩擦力を外経部より
小さくでき、ローラの円滑な回転が得られるので
ローラ及びカム面の摩耗、損傷を防ぐことがで
き、ローラ外径部が部分的な球面形状となつてい
ることによりローラに対して絞り弁開閉レバーが
傾斜してもカム面の端部で生ずる局部的な接触を
防ぎローラの摩耗、損傷を防止できるという効果
を奏するものである。 Since the present invention has the above-described configuration, the friction force on the inner rolling surface of the roller can be made smaller than that on the outer diameter part, and smooth rotation of the roller can be obtained, thereby reducing wear and damage on the roller and cam surface. Since the outer diameter of the roller has a partially spherical shape, even if the throttle valve opening/closing lever is tilted relative to the roller, local contact that occurs at the end of the cam surface is prevented, preventing roller wear. This has the effect of preventing damage.
第１図は本発明の一実施例の正面図、第２図は
第１図の左側面図、第３図は第１図のＸ−Ｘ線で
切断した同上ローラ部の拡大縦断面図、第４図は
カム溝の形状により得られる中継レバー回転角と
絞り弁回転角との相関関係曲線の種々の例を示す
図。
１……絞り弁本体、２……絞り弁軸、３……絞
り弁開閉レバー、４……ローラ軸、５……調整ボ
ルト、７……ローラ、８……薄膜部材、１１……
中継レバー、１２……中継軸、１３……ボールジ
ヨイント、１４……ストツパ、１５……突出部、
１６……ダツシユポツト、１７……引張りコイル
スプリング、２３……絞り弁、２７……捩りコイ
ルスプリング。
FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a left side view of FIG. 1, and FIG. 3 is an enlarged longitudinal cross-sectional view of the same roller section taken along line X-X in FIG. 1. FIG. 4 is a diagram showing various examples of correlation curves between the relay lever rotation angle and the throttle valve rotation angle obtained by the shape of the cam groove. DESCRIPTION OF SYMBOLS 1... Throttle valve body, 2... Throttle valve shaft, 3... Throttle valve opening/closing lever, 4... Roller shaft, 5... Adjustment bolt, 7... Roller, 8... Thin film member, 11...
Relay lever, 12... Relay shaft, 13... Ball joint, 14... Stopper, 15... Projection,
16...dash pot, 17...tension coil spring, 23...throttle valve, 27...torsion coil spring.
Claims (1)
レバーとを、一方のレバーに設けたカム溝と他方
のレバーに設けたローラとを介して連結してリン
ク機構を構成し、車両のアクセル踏み込み量と吸
気絞り弁の開き量との関数関係を、前記カム溝の
形状を変えることにより任意に変化できるように
した内燃機関用吸気絞り弁において、前記ローラ
の内径部又はローラ軸外径部に低摩擦係数を有す
る材料より成る薄膜部を設け、これを介してロー
ラとローラ軸との転動面を構成するとともに、前
記ローラの外径部を部分的な球面形状としたこと
を特徴とする吸気絞り弁開閉装置。1 A link mechanism is constructed by connecting the throttle valve opening/closing lever and a relay lever connected to the accelerator via a cam groove provided on one lever and a roller provided on the other lever, and the amount of depression of the accelerator of the vehicle and the In the intake throttle valve for an internal combustion engine, the functional relationship with the opening amount of the intake throttle valve can be arbitrarily changed by changing the shape of the cam groove, and the inner diameter portion of the roller or the outer diameter portion of the roller shaft is provided with low friction. An intake throttle characterized in that a thin film part made of a material having a coefficient is provided, through which a rolling surface between a roller and a roller shaft is formed, and an outer diameter part of the roller is formed into a partially spherical shape. Valve opening/closing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9297681A JPS57198333A (en) | 1981-06-18 | 1981-06-18 | Opening and closing device of intake air throttle valve for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9297681A JPS57198333A (en) | 1981-06-18 | 1981-06-18 | Opening and closing device of intake air throttle valve for internal combustion engine |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56081836A Division JPS57198329A (en) | 1981-05-30 | 1981-05-30 | Opening and closing device of intake air throttle valve for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57198333A JPS57198333A (en) | 1982-12-04 |
| JPS6155605B2 true JPS6155605B2 (en) | 1986-11-28 |
Family
ID=14069421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9297681A Granted JPS57198333A (en) | 1981-06-18 | 1981-06-18 | Opening and closing device of intake air throttle valve for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57198333A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0614046Y2 (en) * | 1985-02-28 | 1994-04-13 | 株式会社京浜精機製作所 | Sliding throttle valve type carburetor |
-
1981
- 1981-06-18 JP JP9297681A patent/JPS57198333A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57198333A (en) | 1982-12-04 |
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