JPH0634602Y2 - Choke opening / closing adjustment device for carburetor - Google Patents

Choke opening / closing adjustment device for carburetor

Info

Publication number
JPH0634602Y2
JPH0634602Y2 JP1986048451U JP4845186U JPH0634602Y2 JP H0634602 Y2 JPH0634602 Y2 JP H0634602Y2 JP 1986048451 U JP1986048451 U JP 1986048451U JP 4845186 U JP4845186 U JP 4845186U JP H0634602 Y2 JPH0634602 Y2 JP H0634602Y2
Authority
JP
Japan
Prior art keywords
pinion
screw
choke
set plate
rack
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 - Lifetime
Application number
JP1986048451U
Other languages
Japanese (ja)
Other versions
JPS62160756U (en
Inventor
裕 酒井
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.)
Aisan Industry Co Ltd
Original Assignee
Aisan Industry 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 Aisan Industry Co Ltd filed Critical Aisan Industry Co Ltd
Priority to JP1986048451U priority Critical patent/JPH0634602Y2/en
Publication of JPS62160756U publication Critical patent/JPS62160756U/ja
Application granted granted Critical
Publication of JPH0634602Y2 publication Critical patent/JPH0634602Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Means For Warming Up And Starting Carburetors (AREA)

Description

【考案の詳細な説明】 イ.考案の目的 イ−1.産業上の利用分野 本考案は気化器のチョーク開閉調整装置に関する。[Detailed Description of Device] a. Purpose of the Invention A-1. Field of Industrial Application The present invention relates to a choke opening / closing adjusting device for a carburetor.

イ−2.従来技術 従来、気化器のオートチョーク機構において、第4図及
び第5図に示す如く、温度に応じて伸縮作動する温度応
動装置(1)と、該装置(1)の伸縮作動により支軸
(2)を中心として正逆回動するラックレバー(3)
と、該ラックレバー(3)に一体形成したラック(4)
と、該ラック(4)に噛合するピニオン(5)と、該ピ
ニオン(5)に備えたリリーフスプリング(6)と、該
リリーフスプリング(6)の他端に係合するチョークレ
バー(7)と、該チョークレバー(7)を固着したチョ
ークシャフト(8)及びチョークバルブ(9)とよりな
り、温度応動装置(1)の伸縮作動によりラック(5)
を正逆回動してピニオン(5)を正逆回動し、リリーフ
スプリング(6)を介してチョークバルブ(9)を開閉
するようにしたものがある。そして前記ラック(4)に
対するピニオン(5)の噛合位置調整として、ピニオン
(5)を保持するピニオンセットプレート(10)の基部
を前記支軸(2)により揺動可能に備えると共に該ピニ
オンセットプレート(10)の他端に調整用長孔(11)を
形成し、該長孔(11)を通じて固定用ねじ(12)でピニ
オンセットプレート(10)を器体(13)に固着するよう
にし、前記長孔(11)と固定ねじ(12)とによりピニオ
ンセットプレート(10)の揺動方向位置の調整とその固
定を行なうようにしたものが例えば実公開昭55-30931号
公報に開示されている。
B-2. Prior Art Conventionally, in an auto choke mechanism of a carburetor, as shown in FIGS. 4 and 5, a temperature responsive device (1) that expands and contracts according to temperature, and an expanding and contracting operation of the device (1). The rack lever (3) that rotates forward and backward around the support shaft (2)
And a rack (4) integrally formed with the rack lever (3)
A pinion (5) meshing with the rack (4), a relief spring (6) provided on the pinion (5), and a choke lever (7) engaging with the other end of the relief spring (6). A choke shaft (8) to which the choke lever (7) is fixed and a choke valve (9), and the rack (5) is expanded and contracted by the temperature responsive device (1).
There is a type in which the pinion (5) is normally and reversely rotated to open and close the choke valve (9) through a relief spring (6). Then, for adjusting the meshing position of the pinion (5) with respect to the rack (4), the base of the pinion set plate (10) holding the pinion (5) is swingably provided by the support shaft (2) and the pinion set plate is provided. An adjustment long hole (11) is formed at the other end of (10), and the pinion set plate (10) is fixed to the body (13) with a fixing screw (12) through the long hole (11). A device in which the position of the pinion set plate (10) in the swinging direction is adjusted and fixed by the elongated hole (11) and the fixing screw (12) is disclosed in, for example, Japanese Utility Model Publication No. Sho 55-30931. There is.

イ−3.本考案が解決しようとする問題点 前記従来構造におけるラック(4)に対するピニオン
(5)の噛合位置調整機構においては、調整時に作業者
の手で直接ピニオンセットプレート(10)を把持して移
動しなければならないことから、その微調整が困難であ
り、正確な調整に時間がかゝるか又はできない問題があ
る。また、調整時において、ピニオンセットプレート
(10)の位置をセットした後に固定用ねじ(12)を締め
回動すると、その締付トルクによりピニオンセットプレ
ート(10)が移動してセット位置がずれる可能性がある
問題もある。
A-3. Problems to be solved by the present invention In the meshing position adjusting mechanism of the pinion (5) with respect to the rack (4) in the conventional structure, the operator directly grips the pinion set plate (10) at the time of adjustment. Since it has to be moved in this manner, it is difficult to finely adjust it, and there is a problem that it takes time to make an accurate adjustment or it is impossible. Also, during adjustment, if the fixing screw (12) is tightened and turned after setting the position of the pinion set plate (10), the tightening torque moves the pinion set plate (10) and the set position can be displaced. There are also some problems.

そこで本考案は、前記のような調整において、微調整が
でき、かつ前記のようなセット位置のずれが発生しない
調整装置を提案することを目的とするものである。
Therefore, an object of the present invention is to propose an adjusting device which can be finely adjusted in the above-mentioned adjustment and which does not cause the deviation of the set position as described above.

ロ.考案の構成 ロ−1.問題点を解決するための手段 本考案は前記の問題点を解決するために、温度に応じて
伸縮作動する温度応動装置(1)と、該温度応動装置
(1)の伸縮作動により作動するラック(4)を有する
ラックレバー(3)と、前記ラック(4)と噛合するピ
ニオン(5)を備えたピニオンセットプレート(14)
と、前記ピニオン(5)とチョークレバー(7)とを連
結するリリーフスプリング(6)とを設けて、ピニオン
(5)の回動によりチョークバルブ(9)の開閉を制御
するようにしたものにおいて、前記ピニオンセットプレ
ート(14)の先端には係合片(16)を直交方向に突出し
て形成し、これを器体側に固設したねじ受け部(20)に
対向させ、前記係合片(16)に調整ねじ(9)を挿通し
て、これをスプリング(21)を介してねじ受部(20)に
螺着するようにして、チョーク弁開度の調整部を構成
し、この調整においてチョークシャフト(8)の軸心と
ピニオン(5)の軸心が同軸時に係合片(16)とねじ受
部(20)とが平行になるようにこれらの関係を定め、且
つ前記ピニオンセットプレート(14)の基端には、該基
端部を器体側に支軸(2)の先端に形成した支承部(2
a)を有するガイド突起(2b)に遊嵌し、支軸(2)に
螺挿した止ねじ(15)により上記基端部を前記支承段部
(2a)に対し締着固定するようにしてピニオンセットプ
レート(14)の固定部を構成したものである。
B. Configuration of the Invention b-1. Means for Solving the Problems In order to solve the above problems, the present invention provides a temperature responsive device (1) that expands and contracts according to temperature, and the temperature responsive device (1). A pinion set plate (14) including a rack lever (3) having a rack (4) that is operated by the expansion and contraction of the rack, and a pinion (5) that meshes with the rack (4).
And a relief spring (6) for connecting the pinion (5) and the choke lever (7) to control the opening and closing of the choke valve (9) by rotating the pinion (5). An engaging piece (16) is formed at the tip of the pinion set plate (14) so as to project in an orthogonal direction, and the engaging piece (16) is made to face a screw receiving portion (20) fixedly mounted on the body side, and the engaging piece ( 16) The adjusting screw (9) is inserted into the screw receiving part (20) via the spring (21) to form a choke valve opening adjusting part. When the axis of the choke shaft (8) and the axis of the pinion (5) are coaxial, the relationship between them is determined so that the engaging piece (16) and the screw receiving part (20) are parallel to each other, and the pinion set plate At the base end of (14), the base end is supported by the support shaft (2). Bearing portion formed in the tip (2
A guide projection (2b) having a) is loosely fitted, and the base end portion is fastened and fixed to the bearing step portion (2a) by a set screw (15) screwed into the support shaft (2). The pinion set plate (14) constitutes a fixed portion.

ロー2.作用 ラック(4)に対するピニオン(5)の噛合位置調整を
する場合には、先ず、止ねじ(15)を緩めてピニオンセ
ットプレート(14)を揺動可能にし、次で、調整ねじ
(19)を正逆回動してピニオンセットプレート(14)を
その揺動方向に所定量移動させ、ピニオン(5)を所望
位置にセットする。このとき、ねじ回転量に対するピニ
オンセットプレート(14)の揺動方向移動量は微量であ
る。これにより、ピニオンセットプレート(14)は、圧
縮されたスプリング(21)の押圧力により、調整ねじ
(19)の頭部に圧接され、その揺動方向に対して容易に
変位することなく強固に保持される。このセット後、止
ねじ(15)を締付けて、そのセット状態を固定する。こ
の止ねじ(15)の締付け時に該止ねじ(15)の回転トル
クがピニオンセットプレート(14)に作用するが、ピニ
オンセットプレート(14)は前記の如く調整ねじ部で強
固に保持されているので、この止ねじ(15)の回転トル
クでは回動しない。
Low 2. Action When adjusting the meshing position of the pinion (5) with respect to the rack (4), first loosen the set screw (15) to make the pinion set plate (14) swingable, and then adjust screw. The pinion (5) is set at a desired position by rotating the pinion (19) forward and backward to move the pinion set plate (14) by a predetermined amount in the swinging direction. At this time, the movement amount of the pinion set plate (14) in the swinging direction with respect to the screw rotation amount is very small. As a result, the pinion set plate (14) is pressed against the head of the adjusting screw (19) by the pressing force of the compressed spring (21) and is firmly fixed without being displaced in the swinging direction. Retained. After this setting, tighten the set screw (15) to fix the set state. The rotational torque of the set screw (15) acts on the pinion set plate (14) when the set screw (15) is tightened, but the pinion set plate (14) is firmly held by the adjusting screw portion as described above. Therefore, it does not rotate with the rotation torque of the set screw (15).

ロ−3.実施例 次に第1図乃至第3図に示す本考案の実施例について説
明する。(1)は温度応動装置、(2)は支軸、(3)
はラックレバー、(4)はラック、(5)はピニオン、
(6)はリリーフスプリング、(7)はチョークレバ
ー、(8)はチョークシャフト、(9)はチョークバル
ブでこれらは前記従来構造と同様である。(14)はピニ
オンセットプレートで、その基部が前記支軸(2)に螺
合した止ねじ(15)により支持され、先部の裏面には前
記のピニオン(5)が回転可能に備えられ、更に先部に
おける揺動方向の側面には、調整用の係合片(16)が揺
動方向に対して直交する方向に一体形成されている。該
ピニオンセットプレート(14)の止ねじ(15)による固
着は、第3図に示す如く、固定の前記支軸(2)の前面
に支承段部(2a)を形成してその中心にガイド突起(2
b)を形成し、かつ、ピニオンセットプレート(14)の
板厚(L)を前記ガイド突起(2b)の突出量(l)より
大きくして、ピニオンセットプレート(14)をガイド突
起(2b)の外周に回動可能に嵌合し、ワッシャ(17)を
介在して止ねじ(15)を支軸(2)に螺着し、該止ねじ
(15)の締付力がピニオンセットプレート(14)の表面
に作用するようにして固着するようになっている。また
前記係合片(16)には、ピニオンセットプレート(14)
の揺動方向に対して穴(18)通じて調整ねじ(19)が挿
通され、該調整ねじ(19)が器体(13)に固設したねじ
部受け部(20)に螺着されている。(21)は前記調整ね
じ(19)の外周において、前記係合片(16)とねじ受け
部(19)間に圧縮されるように介在したスプリングであ
る。
B-3. Embodiment Next, an embodiment of the present invention shown in FIGS. 1 to 3 will be described. (1) is a temperature responsive device, (2) is a spindle, (3)
Is a rack lever, (4) is a rack, (5) is a pinion,
(6) is a relief spring, (7) is a choke lever, (8) is a choke shaft, and (9) is a choke valve, which are the same as those in the conventional structure. (14) is a pinion set plate, the base of which is supported by a set screw (15) screwed to the support shaft (2), and the pinion (5) is rotatably provided on the back surface of the tip, Further, an adjusting engagement piece (16) is integrally formed on a side surface of the tip portion in the swinging direction in a direction orthogonal to the swinging direction. As shown in FIG. 3, the pinion set plate (14) is fixed by the set screw (15) by forming a bearing step portion (2a) on the front surface of the fixed support shaft (2) and a guide projection at the center thereof. (2
b) is formed, and the plate thickness (L) of the pinion set plate (14) is made larger than the protrusion amount (1) of the guide protrusion (2b), so that the pinion set plate (14) is guided to the guide protrusion (2b). Is rotatably fitted to the outer circumference of the pinion set plate, and a set screw (15) is screwed to the support shaft (2) with a washer (17) interposed. It is designed to adhere to the surface of 14) by acting on it. The engagement piece (16) has a pinion set plate (14).
The adjusting screw (19) is inserted through the hole (18) in the swinging direction of the, and the adjusting screw (19) is screwed into the screw part receiving portion (20) fixed to the body (13). There is. Reference numeral (21) is a spring interposed between the engaging piece (16) and the screw receiving portion (19) on the outer periphery of the adjusting screw (19) so as to be compressed.

ハ.考案の効果 以上のように本考案によれば、ピニオンセットプレート
(14)の移動、すなわちラック(4)に対するピニオン
(5)の噛合位置調整が微量に行なえるので、チョーク
バルブの開度調整精度を向上し、チョークバルブの作動
特性が設計値どおりに得られる。
C. As described above, according to the present invention, since the pinion set plate (14) can be moved, that is, the meshing position of the pinion (5) with respect to the rack (4) can be minutely adjusted, the opening adjustment accuracy of the choke valve can be improved. And the operating characteristics of the choke valve can be obtained as designed.

特に本考案は、チョーク弁開度の調整部と固定部すなわ
ちピニオンセットプレート(14)の固定部とを別個に設
けたのでチョーク片開度調整後の固定時の調整変化およ
び振動時の調整ねじの緩みを防止できる効果がある(調
整ねじ19が緩んでも止めねじ15でピニオンセットプレー
ト14を保持しているのでチョーク弁開度は変化しない)
その上本案においては、チョークシャフト(8)の軸心
とピニオン軸(5)の軸心が同軸時において係合片(1
6)とねじ受部(20)が平行になるようにこれらの関係
を定めたのでチョークシャフト軸心とピニオン軸心が、
同軸か否かが係合部(16)とねじ受部(20)の平行度合
いによって、前記各軸心のずれ具合が容易に判別できる
ので正しく調整することが容易に行なえリリーフスプリ
ング(6)のばね特性に変化をあたえずチョークバルブ
の開度特性の精度を悪化させることがない。
Particularly, in the present invention, since the choke valve opening adjustment part and the fixing part, that is, the fixing part of the pinion set plate (14) are separately provided, the adjustment change at the time of adjustment after the choke piece opening adjustment and the adjustment screw at the time of vibration Has the effect of preventing loosening (even if the adjusting screw 19 loosens, the choke valve opening does not change because the set screw 14 holds the pinion set plate 14)
Moreover, in the present invention, when the axis of the choke shaft (8) and the axis of the pinion shaft (5) are coaxial, the engaging piece (1
Since the relationship between 6) and the screw receiving part (20) is parallel, the choke shaft axis and pinion axis are
Whether the shafts are coaxial or not can be easily discriminated by the degree of parallelism between the engaging portion (16) and the screw receiving portion (20), so that correct adjustment can be easily performed and the relief spring (6) can be easily adjusted. The accuracy of the opening characteristic of the choke valve is not deteriorated without changing the spring characteristic.

【図面の簡単な説明】[Brief description of drawings]

第1図は本考案の実施例を示す正面図、第2図は部品の
分解斜視図、第3図は止ねじ部の側断面図、第4図は従
来構造の正面図、第5図は同部品の分解斜視図である。 (1)……温度応動装置 (4)……ラック (5)……ピニオン (6)……リリーフスプリング (7)……チョークレバー (9)……チョークバルブ (13)……器体 (14)……ピニオンセットプレート (15)……止ねじ (16)……係合片 (19)……調整ねじ (20)……ねじ受け部 (21)……スプリング
FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is an exploded perspective view of parts, FIG. 3 is a side sectional view of a set screw part, FIG. 4 is a front view of a conventional structure, and FIG. It is an exploded perspective view of the same component. (1) …… Temperature responsive device (4) …… Rack (5) …… Pinion (6) …… Relief spring (7) …… Choke lever (9) …… Choke valve (13) …… Body (14) ) …… Pinion set plate (15) …… Set screw (16) …… Engaging piece (19) …… Adjusting screw (20) …… Screw receiving part (21) …… Spring

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】温度に応じて伸縮作動する温度応動装置
(1)と、該温度応動装置(1)の伸縮作動により作動
するラック(4)を有するラックレバー(3)と、前記
ラック(4)と噛合するピニオン(5)を備えたピニオ
ンセットプレート(14)と前記ピニオン(5)とチョー
クレバー(7)とを連結するリリーフスプリング(6)
とを設けて、ピニオン(5)の回動によりチョークバル
ブ(9)の開閉を制御するようにしたものにおいて、前
記ピニオンセットプレート(14)の先端には係合片(1
6)を直交方向に突出して形成し、これを器体側に固設
したねじ受部(20)に対向させ、前記係合片(16)に調
整ねじ(19)を挿通して、これをスプリング(21)を介
してねじ受部(20)に螺着するようにしてチョーク弁開
度の調整部を構成し、チョークシャフト(8)の軸心と
ピニオン軸(5)の軸心が同軸時において係合片(16)
とねじ受部(20)が平行になるようにこれらの関係を定
め、且つ前記ピニオンセットプレート(14)の基端に
は、該基端部を器体側の支軸(2)の先端に形成した支
承段部(2a)を有するガイド突起(2b)に遊嵌し、支軸
(2)に螺挿した止ねじ(15)により上記基端部を前記
支承段部(2a)に対し締着固定するようにしてピニオン
セットプレート(14)の固定部を構成した気化器のチョ
ーク開閉調整装置。
1. A rack (3) having a temperature responsive device (1) that expands and contracts according to temperature, a rack (4) that operates by expansion and contraction of the temperature responsive device (1), and the rack (4). ) And a relief spring (6) for connecting the pinion (5) and the choke lever (7) with a pinion set plate (14) provided with a pinion (5)
And the opening and closing of the choke valve (9) are controlled by the rotation of the pinion (5). The pinion set plate (14) has an engaging piece (1
6) is formed so as to project in the orthogonal direction, and this is made to face the screw receiving portion (20) fixed to the body side, and the adjusting screw (19) is inserted into the engaging piece (16), and this is turned into a spring. When the choke valve opening adjusting section is configured to be screwed to the screw receiving section (20) via the (21), the axis of the choke shaft (8) and the axis of the pinion shaft (5) are coaxial. Engaging pieces at (16)
And the screw receiving part (20) are parallel to each other, and at the base end of the pinion set plate (14), the base end is formed at the tip of the support shaft (2) on the body side. Is loosely fitted to the guide protrusion (2b) having the bearing step (2a), and the base end is fastened to the bearing step (2a) by the set screw (15) screwed into the support shaft (2). A choke opening / closing adjusting device for a carburetor, in which a pinion set plate (14) is configured to be fixed so as to be fixed.
JP1986048451U 1986-03-31 1986-03-31 Choke opening / closing adjustment device for carburetor Expired - Lifetime JPH0634602Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986048451U JPH0634602Y2 (en) 1986-03-31 1986-03-31 Choke opening / closing adjustment device for carburetor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986048451U JPH0634602Y2 (en) 1986-03-31 1986-03-31 Choke opening / closing adjustment device for carburetor

Publications (2)

Publication Number Publication Date
JPS62160756U JPS62160756U (en) 1987-10-13
JPH0634602Y2 true JPH0634602Y2 (en) 1994-09-07

Family

ID=30869990

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986048451U Expired - Lifetime JPH0634602Y2 (en) 1986-03-31 1986-03-31 Choke opening / closing adjustment device for carburetor

Country Status (1)

Country Link
JP (1) JPH0634602Y2 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5755954U (en) * 1980-09-16 1982-04-01
JPS5888443A (en) * 1981-11-20 1983-05-26 Hitachi Ltd Heat-sensing unit of auto-choke mechanism

Also Published As

Publication number Publication date
JPS62160756U (en) 1987-10-13

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