JPS635122A - Throttle opening detector - Google Patents
Throttle opening detectorInfo
- Publication number
- JPS635122A JPS635122A JP14620886A JP14620886A JPS635122A JP S635122 A JPS635122 A JP S635122A JP 14620886 A JP14620886 A JP 14620886A JP 14620886 A JP14620886 A JP 14620886A JP S635122 A JPS635122 A JP S635122A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- detection
- housing
- throttle
- tapered
- 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
- 238000001514 detection method Methods 0.000 claims description 104
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000007257 malfunction Effects 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 229920003002 synthetic resin Polymers 0.000 abstract description 2
- 239000000057 synthetic resin Substances 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 10
- 230000002238 attenuated effect Effects 0.000 description 6
- 230000002411 adverse Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、船外機用エンジン等に用いられて好適なスロ
ットル開度検出器に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a throttle opening degree detector suitable for use in outboard motor engines and the like.
［従来の技術］
気化器のスロットル開度検出器として、実開昭８ｌ−３
ｆｉ５０８号公報に記載のものが提案されている。[Prior art] As a throttle opening detector for a carburetor, the Utility Model 8l-3
The method described in fi508 has been proposed.
このスロットル開度検出器は、気化器のスロットル軸に
連結される検出軸を備え、検出軸の端部に設けられる接
点を、固定部材の側に設けられている抵抗板に摺接し、
抵抗板に対する接点の当接位置によってスロットル軸の
開度を検出するようになっている。This throttle opening detector includes a detection shaft connected to the throttle shaft of the carburetor, and a contact provided at the end of the detection shaft slides into contact with a resistance plate provided on the fixed member side.
The opening degree of the throttle shaft is detected based on the contact position of the contact with the resistance plate.
上記スロットル開度検出器にあっては、気化器側の大き
な振動が検出軸および接点に伝わると。In the throttle opening detector described above, when large vibrations from the carburetor side are transmitted to the detection shaft and contacts.
振動に弱い接点に破損を生ずる。Damage occurs to contacts that are sensitive to vibration.
そこで、上記従来のスロットル開度検出器にあっては、
検出軸にその回転軸を中心軸とするリング状のＶ溝を形
成し、この■溝に相対するリング状のＶ突起を固定部材
に設け、ｖｔＩＩＩとＶ突起とを相互に摺接保持させる
弾発部材を設けている。Therefore, in the conventional throttle opening detector mentioned above,
A ring-shaped V groove is formed on the detection shaft with its rotation axis as the center axis, and a ring-shaped V protrusion facing this groove is provided on the fixing member, and an elastic member is used to hold the VtIII and the V protrusion in sliding contact with each other. A generator is provided.
これにより、上記従来のスロットル開度検出器は検出軸
に設けたＶ溝を固定部材に設けたＶ突起に常に嵌合させ
、固定部材に設けられている抵抗板に対する接点の振動
を減少させ、接点と抵抗板との接触圧変化を最少限に押
え、振動による接点の破損を防としている。As a result, in the conventional throttle opening detector, the V groove provided on the detection shaft always fits into the V protrusion provided on the fixed member, thereby reducing the vibration of the contact point with respect to the resistance plate provided on the fixed member. Changes in contact pressure between the contact and the resistance plate are kept to a minimum to prevent damage to the contact due to vibration.
［９！明が解決しようとする問題点］
しかしながら、上記従来のスロットル開度検出器にあっ
は、スロットル軸と検出軸とが相互に直接的に接触する
状態で連結されている。したがって、気化器側の大きな
振動が減衰されずに検出軸の側に伝わり易い、これによ
り、たとえ検出軸と固定部材とに前述のＶ溝とＶ突起か
らなる嵌合構造を設けたとしても、検出軸に伝わった大
きな振動が接点に及ぼす悪影響を充分に除去することは
できない、すなわち、振動による検出器の作動不良発生
を確実に防止することはできない。[9! Problems to be Solved by Akira] However, in the conventional throttle opening detector described above, the throttle shaft and the detection shaft are connected in a state in which they are in direct contact with each other. Therefore, large vibrations on the carburetor side are easily transmitted to the detection shaft side without being attenuated.As a result, even if the detection shaft and the fixing member are provided with the above-mentioned fitting structure consisting of the V groove and V protrusion, It is not possible to sufficiently eliminate the adverse effect that large vibrations transmitted to the detection shaft have on the contacts, that is, it is not possible to reliably prevent malfunctions of the detector due to vibrations.
本発明は、振動による検出器の作動不良発生を確実に防
止することを目的とする。An object of the present invention is to reliably prevent malfunction of a detector due to vibration.
［問題点を解決するための手段］
本発明は、気化器本体に取付けられるハウジングと、ハ
ウジングに支持されて該ハウジングの内外に貫通し、気
化器のスロットル軸に連結される検出軸と、ハウジング
内に設けられる検出板と、検出軸に設けられて検出板に
当接する検出接点とを有し、検出板に対する検出接点の
当接位置により検出軸に連結されるスロットル軸の回転
角度位置を検出するスロットル開度検出器において、検
出軸が可撓継手を介してスロットル軸に連結されるとと
もに、ハウジング内に位置する検出軸の端部がテーパー
軸部とされ、検出軸の軸上に位置するハウジング内には
テーパー受部が形成され、ハウジングと検出軸の間に介
在させた弾発部材の弾発力により、検出軸のテーパー軸
部をハウジングのテーパー受部に押圧し、該テーパー軸
部な該テーパー受部に支持させるようにしたものである
。[Means for Solving the Problems] The present invention includes a housing attached to a carburetor main body, a detection shaft supported by the housing and penetrating inside and outside the housing, and connected to a throttle shaft of the carburetor, and a housing. It has a detection plate provided inside the sensor and a detection contact provided on the detection shaft and abuts the detection plate, and detects the rotational angular position of the throttle shaft connected to the detection shaft based on the contact position of the detection contact with the detection plate. In the throttle opening detector, the detection shaft is connected to the throttle shaft via a flexible joint, and the end of the detection shaft located inside the housing is formed into a tapered shaft portion and is located on the axis of the detection shaft. A tapered receiving part is formed in the housing, and the tapered shaft part of the detection shaft is pressed against the tapered receiving part of the housing by the elastic force of the resilient member interposed between the housing and the detection shaft, and the tapered shaft part It is supported by the tapered receiving portion.
［作用］
本発明によれば、気化器のスロットル軸に生ずる大きな
振動は、可ｔｍ １１手のたわみによって減衰された状
態で検出軸に伝わる。[Operation] According to the present invention, large vibrations occurring on the throttle shaft of the carburetor are transmitted to the detection shaft in a state where they are attenuated by the deflection of the hand.
また、検出軸のテーパー軸部とハウジングのテーパー受
部とは弾発部材の弾発力によって常にテーパー嵌合状態
を保ち、■検出軸の軸直角方向への、検出軸とハウジン
グとの相対変位は上記テーパー嵌合によって抑制され、
■検出軸の軸方向への、検出軸とハウジングとの相対変
位は弾発力の存在によって抑制され、結果として、ハウ
ジング側の検出板に対する検出軸側の接点の振動を最少
限に抑えることが可能となっている。In addition, the tapered shaft part of the detection shaft and the tapered receiving part of the housing always maintain a tapered fitted state due to the elastic force of the resilient member, and ■ relative displacement between the detection shaft and the housing in the direction perpendicular to the axis of the detection shaft. is suppressed by the above taper fitting,
■The relative displacement between the detection shaft and the housing in the axial direction of the detection shaft is suppressed by the presence of elastic force, and as a result, the vibration of the contact point on the detection shaft side with respect to the detection plate on the housing side can be suppressed to a minimum. It is possible.
したがって、本発明によれば、気化器のスロットル軸に
生ずる大きな振動は、可撓継手の存在によって減衰され
た状態で検出軸に伝わり、検出軸に伝わることとなる比
較的小さな振動が接点に及ぼす悪″＃響は、前述のテー
パー殴合構造および弾発部材の存在によってほぼ完全に
抑えられる。これにより、振動による検出器の作動不良
発生を確実に防止することができる。Therefore, according to the present invention, large vibrations occurring in the throttle shaft of the carburetor are transmitted to the detection shaft in a damped state due to the presence of the flexible joint, and relatively small vibrations that are transmitted to the detection shaft are exerted on the contacts. Adverse sound is almost completely suppressed by the presence of the above-mentioned tapered striking structure and resilient member. This makes it possible to reliably prevent malfunction of the detector due to vibration.
［実施例１
第１図は本発明が適用された船外機を示す側面図；−第
２図は本発明の一実施例を一部破断して示す正面図、第
３図は第２図の■−■線に沿う矢視図である。[Example 1] Fig. 1 is a side view showing an outboard motor to which the present invention is applied; - Fig. 2 is a partially cutaway front view showing an embodiment of the present invention; Fig. 3 is a side view showing an outboard motor to which the present invention is applied; It is an arrow view along the line ■-■.
船外機１は、第１図に示すように、船体２に取付ブラケ
ット３を介して取付けられ、その推進ユニット４の上部
にエンジン５を搭載している。エンジン５は、カウリン
グ６に覆われ、各気筒の吸気管路７に気化器８を接続さ
れている。９は吸気箱である。As shown in FIG. 1, the outboard motor 1 is attached to a hull 2 via a mounting bracket 3, and has an engine 5 mounted on top of a propulsion unit 4. The engine 5 is covered with a cowling 6, and has a carburetor 8 connected to an intake pipe 7 of each cylinder. 9 is an intake box.
スロットル開度検出器１０は、第２図に示すように気化
器８の本体８Ａに取付ブラケッ）１１を介して取付けら
れ、基部１２とキャップ部１３とからなるハウジング１
４と、ハウジング１４の基部１２に支持されて該ハウジ
ング１４の内外に貫通し、気化器８のスロー２トル軸１
５に連結される検出軸１６と、ハウジング１４のキャッ
プ部１３の内面に設けられる抵抗板（検出板）１７と、
検出軸１６に一体化される導電板基台１８に導電板１９
を介して設けられ、抵抗板１７に当接する検出接点２０
とを有する。１５Ａはスロットル弁。The throttle opening detector 10 is attached to the main body 8A of the carburetor 8 via a mounting bracket 11 as shown in FIG.
4 and a slow torque shaft 1 of the carburetor 8 which is supported by the base 12 of the housing 14 and passes through the inside and outside of the housing 14.
5, a resistance plate (detection plate) 17 provided on the inner surface of the cap portion 13 of the housing 14,
A conductive plate 19 is attached to a conductive plate base 18 that is integrated with the detection shaft 16.
A detection contact 20 is provided through the
and has. 15A is the throttle valve.
２０Ａはリード線である。すなわち、スロットル開度検
出器１０は、ポテンショ子メータ方式によってスロット
ル開度を検出するものであり、抵１抗板１７に対する接
点２０の当接位置により抵抗値が変化して、検出軸１６
に連結されるスロットル軸１５の回転角度位置を検出す
る。20A is a lead wire. That is, the throttle opening degree detector 10 detects the throttle opening degree using a potentiometer method, and the resistance value changes depending on the contact position of the contact point 20 with respect to the resistor plate 17.
The rotation angle position of the throttle shaft 15 connected to the throttle shaft 15 is detected.
ここで、スロットル開度検出器１０は、第２図に示すよ
うに、ハウジング１４の基部１２をボルト２１により取
付ブラケット１１に固定し、取付ブラケット１１にゴム
マウント部２２を設け、ゴムマウント部２２をボルト２
３により気化器８の本体８Ａに固定している。ゴムマウ
ント部２２とボルト２３の間には、フランジ付カラー２
４Ａ。Here, as shown in FIG. 2, in the throttle opening detector 10, the base 12 of the housing 14 is fixed to the mounting bracket 11 with bolts 21, a rubber mount part 22 is provided on the mounting bracket 11, and a rubber mount part 22 is provided on the mounting bracket 11. the bolt 2
3 to the main body 8A of the carburetor 8. Between the rubber mount part 22 and the bolt 23, there is a flange collar 2.
4A.
ワッシャ２４Ｂが介在される。A washer 24B is interposed.
また、スロットル軸１５と検出軸１６は、第２図、第３
図に示すように、合成樹脂製の可撓継手２５によって連
結される。可撓継手２５の両方の結合端部は、スロット
ル軸１５．検出軸１６の相対する端部のそれぞれにピン
２６．２７により結合されている。In addition, the throttle shaft 15 and the detection shaft 16 are shown in FIGS. 2 and 3.
As shown in the figure, they are connected by a flexible joint 25 made of synthetic resin. Both coupling ends of the flexible joint 25 are connected to the throttle shaft 15. It is connected to each of the opposing ends of the detection shaft 16 by a pin 26,27.
さらに、スロットル開度検出器１０は、ハウジング１４
の内部に位置する検出軸１６の端部を円錐突起状のテー
パー軸部１８とするとともに、検出軸１６の軸上に位置
するキャップ部１３の内面に円錐凹面状のテーパー受部
２９を形成している。また、ハウジング１４の基部１２
と検出軸１６に一体の導電板基台１８との間に介在させ
た弾発部材（ウェブワッシャ）３０の弾発力により、テ
ーパー軸部２８をテーパー受部２９に押圧し、テーパー
軸部２８をテーパー受部２９に支持させている０弾発部
材３０はコイルスプリングでも−よい、なお、３１は弾
発部材３０を背面支持するワッシャ受部材、３２は０リ
ングである。Further, the throttle opening degree detector 10 includes a housing 14
The end of the detection shaft 16 located inside the detection shaft 16 is formed as a tapered shaft portion 18 in the shape of a conical projection, and a tapered receiving portion 29 in the shape of a concave concave surface is formed on the inner surface of the cap portion 13 located on the axis of the detection shaft 16. ing. Additionally, the base 12 of the housing 14
The elastic force of the elastic member (web washer) 30 interposed between the conductive plate base 18 integrated with the detection shaft 16 presses the tapered shaft portion 28 against the taper receiving portion 29, and the tapered shaft portion 28 The resilient member 30 supported by the tapered receiving portion 29 may be a coil spring. Note that 31 is a washer receiving member that supports the resilient member 30 from behind, and 32 is an O ring.
第４図は上記スロットル開度検出器１０において、検出
器１６とハウジング１４の相対変位が接点２０の振動に
及ぼす影響を示す模式図である。FIG. 4 is a schematic diagram showing the influence of the relative displacement between the detector 16 and the housing 14 on the vibration of the contact 20 in the throttle opening detector 10.
■は検出軸１６とハウジング１４のテーパー嵌合位置、
＠は検出軸１６がハウジング１４を貫通して支持されて
いる位置、■は接点２０の位置を示す、■の部分におけ
る検出軸１６の軸直角方向への振幅はテーパー嵌合によ
り零である。＠の部分における検出軸１６は、検出軸１
６とハウジング１４の軸受クリアランス分に相当する振
幅Ｘで。■ is the tapered fitting position of the detection shaft 16 and the housing 14;
@ indicates the position where the detection shaft 16 penetrates the housing 14 and is supported, and ■ indicates the position of the contact 20. The amplitude of the detection shaft 16 in the direction perpendicular to the axis in the portion marked with ■ is zero due to the tapered fitting. The detection axis 16 in the @ part is the detection axis 1
6 and the amplitude X corresponding to the bearing clearance of the housing 14.
該検出軸１６の軸直角方向へ振動する。上記検出軸の振
幅Ｘが接点２０に与える影！！（振１＠ｙ）は０部と０
部の長さをｉｌ、検出軸１６に対する接点２０のうでの
長さを皇２とすると、
ｙ＝（交ｌ／交２）ΦＸ
となり、テーパー嵌合部を備えない場合の半分以下とな
る。It vibrates in the direction perpendicular to the axis of the detection shaft 16. The shadow that the amplitude X of the detection axis gives to the contact point 20! ! (Swing 1@y) is 0 part and 0
If the length of the contact point 20 with respect to the detection shaft 16 is il, and the length of the arm of the contact point 20 with respect to the detection shaft 16 is 2, then y=(intersection 1/intersection 2)ΦX, which is less than half of the case without the tapered fitting section. .
なお、上記スロットル開度検出器１０において、検出器
１６とハウジング１４の間の、該検出軸１６の軸方向へ
の相対的な振動は、弾発部材３０のｐ発力が該検出軸１
６をテーパー受部２９に向けて常に弾発しているために
零である。In the throttle opening detector 10, the relative vibration in the axial direction of the detection shaft 16 between the detector 16 and the housing 14 is caused by the force p of the resilient member 30
6 is always fired toward the tapered receiving portion 29, so the value is zero.
第５図（Ａ）、（Ｂ）、（Ｃ）は可撓継手２５の変形状
態を示す模式図である。スロットル軸１５と検出軸１６
の変位ｘ、ｙ、ｚは可撓継手２５の曲げ変形またはねじ
り変形によって吸収される。この場合の可撓継手２５の
薄板状可撓部２５Ａの幅をす、厚みをｈとすれば、■該
継手２５の曲げモーメントの大きさを決定する断面係数
３１は。5(A), (B), and (C) are schematic diagrams showing the deformed state of the flexible joint 25. FIG. Throttle axis 15 and detection axis 16
The displacements x, y, z of are absorbed by the bending or torsional deformation of the flexible joint 25. In this case, if the width of the thin plate-like flexible portion 25A of the flexible joint 25 is h and the thickness is h, the section modulus 31 that determines the magnitude of the bending moment of the joint 25 is:
５１＝ｂｈ２／６
であり、■該継手２５の回転トルクの大きさを決定する
断面係数５２は、
５２＝ｈｂ２／６
である１例えば、 ｂ ＝ ｌＯｍ＋ｓ、ｈ ＝ ０
．５ｍｍとすれば、Ｓ ｌ ＝０．４２．３２ ＝８．
３３となり、Ｓ２はＳｌの約２０倍となり、継手２５は
振動の変位を吸収し、かつ回転トルクを十分に伝えるこ
とができる。51=bh2/6, and ■The section modulus 52 that determines the magnitude of the rotational torque of the joint 25 is 52=hb2/61.For example, b=lOm+s, h=0
．． If it is 5 mm, S l =0.42.32 =8.
33, and S2 is approximately 20 times as large as Sl, allowing the joint 25 to absorb vibration displacement and to sufficiently transmit rotational torque.
次に上記実施例の作用について説明する。Next, the operation of the above embodiment will be explained.
上記実施例によれば、気化器８のスロットル軸１５に生
ずる大きな振動は、可＋Ａｊｔ１手２５のたわみによっ
て減衰された状態で検出軸１６に伝する。According to the embodiment described above, large vibrations occurring on the throttle shaft 15 of the carburetor 8 are transmitted to the detection shaft 16 in a state where they are attenuated by the deflection of the adjustable hand 25.
また、検出軸１６のテーパー軸部２８とハウジング１４
のテーパー受部２９とは弾発部材３０の弾発力によって
常にテーパー嵌合状態を保ち、■検出軸１６の軸直角方
向への、検出軸１６とハウジング１４との相対変位は上
記テーパー嵌合によって抑制され、■検出軸１６の軸方
向への、検出軸１６とハウジング１４との相対変位は弾
発力の存在によって抑制され、結果として、ハウジング
１４の側の検出板１７に対する検出軸１６の側の接点２
０の振動を最少限に抑えることが可能となる。したがっ
て、気化器８のスロットル軸１５に生ずる大きな振動は
、可撓継手２５の存在によって減衰された状態で検出軸
１６に伝わり、検出軸１６に伝わることとなる比較的小
さな振動が接点２０に及ぼす悪影響は、前述のテーパー
嵌合構造および弾発部材３０の存在によってほぼ完全に
抑えられる。これにより、振動による検出器１０の作動
不良発生を確実に防止することができる。Further, the tapered shaft portion 28 of the detection shaft 16 and the housing 14
The tapered receiving portion 29 always maintains a tapered fitted state due to the elastic force of the resilient member 30, and the relative displacement between the detecting shaft 16 and the housing 14 in the direction perpendicular to the axis of the detecting shaft 16 is caused by the taper fitting. (2) The relative displacement between the detection shaft 16 and the housing 14 in the axial direction of the detection shaft 16 is suppressed by the presence of the elastic force, and as a result, the displacement of the detection shaft 16 with respect to the detection plate 17 on the housing 14 side is suppressed. side contact 2
It becomes possible to suppress the zero vibration to a minimum. Therefore, large vibrations occurring in the throttle shaft 15 of the carburetor 8 are transmitted to the detection shaft 16 in a state that is attenuated by the presence of the flexible joint 25, and relatively small vibrations that are transmitted to the detection shaft 16 are exerted on the contacts 20. The adverse effects are almost completely suppressed by the tapered fitting structure and the presence of the resilient member 30 described above. Thereby, malfunction of the detector 10 due to vibration can be reliably prevented.
なお、上記実施例にあっては、気化器８の本体８Ａとハ
ウジング１４力間にゴムマウント部２２を介在している
から、該本体８Ａからハウジング１４に伝わる振動も減
衰され、振動による検出軸の作動不良発生をより確実に
防止できる。In the above embodiment, since the rubber mount part 22 is interposed between the main body 8A of the carburetor 8 and the housing 14, vibrations transmitted from the main body 8A to the housing 14 are also attenuated, and the detection axis due to vibrations is also damped. The occurrence of malfunctions can be more reliably prevented.
なお、スロットル軸１５と検出軸１６の軸ずれは、上記
ゴムマウント部２２の存在によって大きくなるが、この
軸ずれは前記可撓継手２５により吸収できる。Although the axial misalignment between the throttle shaft 15 and the detection shaft 16 becomes large due to the presence of the rubber mount portion 22, this axial misalignment can be absorbed by the flexible joint 25.
また、可撓継手２５は、スロットル軸１５、検出軸１６
の回転方向における剛性が高く、スロットル軸１５の回
転力を検出軸１６に確実に伝える。Further, the flexible joint 25 includes the throttle shaft 15 and the detection shaft 16.
has high rigidity in the direction of rotation, and reliably transmits the rotational force of the throttle shaft 15 to the detection shaft 16.
さらに、木実施例では、検出板１７をハウジング１４の
内面に直接設けたが、別部材を介在させて設けてもよい
、この場合、テーパー受部２９はこの別部材に形成され
る。Further, in the wooden embodiment, the detection plate 17 is provided directly on the inner surface of the housing 14, but it may be provided with a separate member interposed therebetween. In this case, the tapered receiving portion 29 is formed in this separate member.
［発明の効果］
以上のように、゛本発明は、気化器本体に取付けられる
ハウジングと、ハウジングに支持されて該ハウジングの
内外に貫通し、気化器のスロットル軸に連結される検出
軸と、ハウジング内に設けられる検出板と、検出軸に設
けられて検出板に当接する検出接点とを有し、検出板に
対する検出接点の当接位置により検出軸に連結されるス
ロットル軸の回転角度位置を検出するスロットル開度検
出器において、検出軸が可撓継手を介してスロットル軸
に連結されるとともに、ハウジング内に位置する検出軸
の端部がテーパー軸部とされ、検出軸の軸上に位置する
ハウジング内にはテーパー受部が形成され、ハウジング
と検出軸の間に介在させた弾発部材の弾発力により、検
出軸のテーパー軸部をハウジングのテーパー受部に押圧
し、該テーパー軸部を該テーパー受部に支持させるよう
にしたものである。[Effects of the Invention] As described above, the present invention includes a housing attached to a carburetor main body, a detection shaft supported by the housing, penetrating inside and outside the housing, and connected to a throttle shaft of the carburetor. It has a detection plate provided in the housing and a detection contact provided on the detection shaft and abuts the detection plate, and the rotational angular position of the throttle shaft connected to the detection shaft is determined by the contact position of the detection contact with the detection plate. In the throttle opening detector, the detection shaft is connected to the throttle shaft via a flexible joint, and the end of the detection shaft located inside the housing is made into a tapered shaft section, and is located on the axis of the detection shaft. A tapered receiving part is formed in the housing, and the tapered shaft part of the detecting shaft is pressed against the tapered receiving part of the housing by the elastic force of the resilient member interposed between the housing and the detection shaft. portion is supported by the tapered receiving portion.
したがって１本発明によれば、気化器のスロットル軸に
生ずる大きな振動は、可撓継手のたわみによって減衰さ
れた状態で検出軸に伝わる。Therefore, according to the present invention, large vibrations occurring in the throttle shaft of the carburetor are transmitted to the detection shaft in a state where they are attenuated by the deflection of the flexible joint.
また、検出軸のテーパー軸部とハウジングのテーパー受
部とは弾発部材の弾発力によって常にテーパー嵌合状態
を保ち、■検出軸の軸直角方向への、検出軸とハウジン
グとの相対変位は上記テーパー嵌合によって抑制され、
■検出軸の軸方向への、検出軸とハウジングとの相対変
位は弾発力の存在によって抑制され、結果として、ハウ
ジング側の検出板に対する検出軸側の接点の振動を最少
限に抑えることが可能となっている。In addition, the tapered shaft part of the detection shaft and the tapered receiving part of the housing always maintain a tapered fitted state due to the elastic force of the resilient member, and ■ relative displacement between the detection shaft and the housing in the direction perpendicular to the axis of the detection shaft. is suppressed by the above taper fitting,
■The relative displacement between the detection shaft and the housing in the axial direction of the detection shaft is suppressed by the presence of elastic force, and as a result, the vibration of the contact point on the detection shaft side with respect to the detection plate on the housing side can be suppressed to a minimum. It is possible.
したがって、本発明によれば、気化器のスロットル軸に
生ずる大きな振動は、可撓継手の存在によって減衰され
た状態で検出軸に伝わり、検出軸に伝わることとなる比
較的小さな振動が接点に及ぼす悪影響は、前述のテーパ
ー嵌合構造および弾発部材の存在によってほぼ完全に抑
えられる。これにより、振動による検出器の作動不良発
生を確実に防止することができる。Therefore, according to the present invention, large vibrations occurring on the throttle shaft of the carburetor are transmitted to the detection shaft in a damped state due to the presence of the flexible joint, and relatively small vibrations that are transmitted to the detection shaft are exerted on the contacts. Adverse effects are almost completely suppressed by the tapered fitting structure and the presence of the resilient member described above. Thereby, malfunction of the detector due to vibration can be reliably prevented.
第１図は本発明が適用された船外機を示す側面図、第２
図は本発明の一実施例を一部破断して示す正面図、第３
図は第２ｒｇＪのｍ−■線に沿う矢視図、第４図は検出
軸の振動が接点の振動に及ぼす影響を示す模式図、第５
図（Ａ）、（Ｂ）。
（Ｃ）は可撓継手の変形状態を示す模式図である。
８・・・気化器、１０・・・スロットル開度検出器、１
４・・・ハウジング、１５・・・スロットル軸、１６・
・・検出軸、１７・・・抵抗板（検出板）、２０・・・
検出接点。
２２・・・ゴムマウント部、２５・・・可撓継手、２８
・・・テーパー軸部、２９・・・テーパー受部、３０・
・・弾発部材。
代理人 弁理士 塩 川 修 治
第 １ 図
第 ３ 図
第 ４ 図
第５図
（Ａ）
（Ｂ）
（Ｃ）Fig. 1 is a side view showing an outboard motor to which the present invention is applied;
The figure is a partially cutaway front view of one embodiment of the present invention;
The figure is an arrow view along the m-■ line of 2nd rgJ, Figure 4 is a schematic diagram showing the influence of the vibration of the detection axis on the vibration of the contact, and Figure 5
Figures (A), (B). (C) is a schematic diagram showing a deformed state of the flexible joint. 8... Carburetor, 10... Throttle opening detector, 1
4... Housing, 15... Throttle shaft, 16...
...Detection axis, 17...Resistance plate (detection plate), 20...
Detection contact. 22...Rubber mount part, 25...Flexible joint, 28
...Tapered shaft part, 29...Tapered receiving part, 30.
・Bulging member. Agent Patent Attorney Osamu Shiokawa 1 Figure 3 Figure 4 Figure 5 (A) (B) (C)
Claims (2)
ングに支持されて該ハウジングの内外に貫通し、気化器
のスロットル軸に連結される検出軸と、ハウジング内に
設けられる検出板と、検出軸に設けられて検出板に当接
する検出接点とを有し、検出板に対する検出接点の当接
位置により検出軸に連結されるスロットル軸の回転角度
位置を検出するスロットル開度検出器において、検出軸
が可撓継手を介してスロットル軸に連結されるとともに
、ハウジング内に位置する検出軸の端部がテーパー軸部
とされ、検出軸の軸上に位置するハウジング内にはテー
パー受部が形成され、ハウジングと検出軸の間に介在さ
せた弾発部材の弾発力により、検出軸のテーパー軸部を
ハウジングのテーパー受部に押圧し、該テーパー軸部を
該テーパー受部に支持させることを特徴とするスロット
ル開度検出器。(1) A housing attached to the carburetor body, a detection shaft supported by the housing and penetrating the inside and outside of the housing and connected to the throttle shaft of the carburetor, a detection plate provided inside the housing, and a detection shaft A throttle opening detector that has a detection contact that is provided and comes into contact with a detection plate, and detects the rotational angular position of a throttle shaft connected to the detection shaft based on the contact position of the detection contact with the detection plate, in which the detection shaft is The end of the detection shaft connected to the throttle shaft via a flexible joint and located within the housing is a tapered shaft portion, and a tapered receiving portion is formed within the housing located on the axis of the detection shaft. The tapered shaft portion of the detection shaft is pressed against the tapered receiving portion of the housing by the resilient force of the resilient member interposed between the housing and the detection shaft, and the tapered shaft portion is supported by the tapered receiving portion. Throttle opening detector.
性マウント部を介して気化器本体に取付けられるスロッ
トル開度検出器。(2) The throttle opening degree detector according to claim 1, wherein the housing is attached to the carburetor body via an elastic mount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61146208A JP2554863B2 (en) | 1986-06-24 | 1986-06-24 | Slot opening detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61146208A JP2554863B2 (en) | 1986-06-24 | 1986-06-24 | Slot opening detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS635122A true JPS635122A (en) | 1988-01-11 |
| JP2554863B2 JP2554863B2 (en) | 1996-11-20 |
Family
ID=15402563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61146208A Expired - Lifetime JP2554863B2 (en) | 1986-06-24 | 1986-06-24 | Slot opening detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2554863B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH078968A (en) * | 1991-02-02 | 1995-01-13 | Korea Advanced Inst Of Sci Technol | Quick-coagulation sedimentation water purification method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55115205A (en) * | 1979-02-28 | 1980-09-05 | Yamaha Motor Co Ltd | Device for holding electric part in vibrationnproof |
| JPS5922945U (en) * | 1982-08-04 | 1984-02-13 | 日産自動車株式会社 | Intake throttle valve opening detection device for internal combustion engine |
-
1986
- 1986-06-24 JP JP61146208A patent/JP2554863B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55115205A (en) * | 1979-02-28 | 1980-09-05 | Yamaha Motor Co Ltd | Device for holding electric part in vibrationnproof |
| JPS5922945U (en) * | 1982-08-04 | 1984-02-13 | 日産自動車株式会社 | Intake throttle valve opening detection device for internal combustion engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH078968A (en) * | 1991-02-02 | 1995-01-13 | Korea Advanced Inst Of Sci Technol | Quick-coagulation sedimentation water purification method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2554863B2 (en) | 1996-11-20 |
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