JPH0478829B2 - - Google Patents
Info
- Publication number
- JPH0478829B2 JPH0478829B2 JP61306108A JP30610886A JPH0478829B2 JP H0478829 B2 JPH0478829 B2 JP H0478829B2 JP 61306108 A JP61306108 A JP 61306108A JP 30610886 A JP30610886 A JP 30610886A JP H0478829 B2 JPH0478829 B2 JP H0478829B2
- Authority
- JP
- Japan
- Prior art keywords
- throttle valve
- sliding
- intake passage
- guide cylinder
- air cleaner
- 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
Links
- 238000005266 casting Methods 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 229920003002 synthetic resin Polymers 0.000 claims description 4
- 239000000057 synthetic resin Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000446 fuel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Landscapes
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は機関へ供給する混合気の量及び濃度を
調整、制御する気化器に関するもので、特に絞り
弁を吸気道に連設した絞り弁案内筒内に移動自在
に配置した摺動絞り弁型気化器の製造方法に関
し、自動二輪車用機関の気化器としてよく用いら
れる。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a carburetor that adjusts and controls the amount and concentration of air-fuel mixture supplied to an engine, and in particular relates to a carburetor that adjusts and controls the amount and concentration of air-fuel mixture supplied to an engine, and particularly relates to a carburetor that has a throttle valve connected to an intake passage. This invention relates to a method of manufacturing a sliding throttle valve type carburetor movably disposed within a guide cylinder, and is often used as a carburetor for motorcycle engines.
従来、前記の如く、摺動絞り弁型気化器は自動
二輪車に良く使用されるものであつて、特に小型
で高出化傾向にあることから気化器の吸入効率の
向上が望まれるものである。この吸入効率の向上
を目指した気化器は本件出願人の出願による特願
昭61−152940合によつて達成される。
Conventionally, as mentioned above, sliding throttle valve type carburetors are often used in motorcycles, and since they tend to be smaller in size and have higher output, it is desirable to improve the suction efficiency of the carburetor. . A vaporizer aiming at improving the suction efficiency was achieved in Japanese Patent Application No. 152940/1989 filed by the applicant of the present invention.
これは、摺動絞り弁を機関側対向側面とエヤー
クリーナー側対向側面とにより構成し、前記機関
側対向側面を円弧状とし、該機関側対向側面の各
円弧状端部を結ぶ線を含む機関側の摺動絞り弁内
にジエツトニードルの中心を配置するとともに、
前記ジエツトニードルの中心を通り吸気道の長手
方向軸心線に直交する線よりエヤークリーナー側
に円弧状端部を結ぶエヤークリーナー側対向側面
を形成しこの摺動絞り弁を絞り弁案内筒内に配置
したものであり、これによると、摺動絞り弁の気
化器本体へのガイド部の溝は極めて小さくできる
ものであり、これによると機関の吸入効率を良好
に保持できたものであり、出力の向上を図ること
ができたものである。 The sliding throttle valve is configured with a side surface facing the engine side and a side surface facing the air cleaner side. Place the center of the jet needle inside the sliding throttle valve on the side,
A side surface facing the air cleaner side is formed that connects the arcuate end toward the air cleaner side from a line passing through the center of the jet needle and perpendicular to the longitudinal axis of the intake passage, and the sliding throttle valve is inserted into the throttle valve guide cylinder. According to this, the groove of the guide part of the sliding throttle valve to the carburetor body could be made extremely small, and this made it possible to maintain good suction efficiency of the engine. This made it possible to improve output.
そして、かかる気化器の製造、特に絞り弁案内
筒の機関側の面の加工は円弧状であるがゆえにフ
ライス加工にて行つている。 In manufacturing such a carburetor, in particular, the engine-side surface of the throttle valve guide cylinder is processed by milling because it has an arcuate shape.
かかる従来の摺動絞り弁型気化器の製造方法に
よると次の問題点を有する。
This conventional method of manufacturing a sliding throttle valve type carburetor has the following problems.
絞り弁案内筒の加工はフライス加工によつて
行なわれるので加工工数がかかり製造コスト高
を招来する。 Machining of the throttle valve guide cylinder is performed by milling, which requires many man-hours and increases manufacturing costs.
加工によつて得られる表面粗度が変化する
と、摺動絞り弁の摺動抵抗及び耐摩耗性が著し
く変化するものであり、この為に表面粗度を均
一に得る必要があり、刃具管理等の切削条件の
管理が困難である。 If the surface roughness obtained through machining changes, the sliding resistance and wear resistance of the sliding throttle valve will change significantly. Therefore, it is necessary to obtain a uniform surface roughness, and cutting tool management etc. It is difficult to control cutting conditions.
本発明になる摺動絞り弁型気化器の製造方法は
前記不具合点に鑑みなされたもので製造コストの
低減を図ることを主目的とし前記目的達成の為に
気化器本体を貫通する吸気道に絞り弁案内筒を連
設し、該絞り弁案内筒内に、機関側対向側面とエ
ヤークリーナー側対向側面とにより構成し、前記
機関側対向側面を円弧状とし、該機関側対向側面
の各円弧状端部結ぶ線を含む機関側の摺動絞り弁
内にジエツトニードルの中心を配置するととも
に、前記ジエツトニードルの中心を通り吸気道の
長手方向軸心線に直交する線よりエヤークリーナ
ー側に円弧状端部を結ぶエヤークリーナー側対向
側面を形成した摺動絞り弁を配置した摺動絞り弁
型気化器であつて、気化器本体を貫通する吸気道
に連設して吸気道をまたいで絞り弁案内ガイド筒
を形成し、該絞り弁案内ガイド筒の機関側ガイド
筒面を吸気道に対して傾斜して鋳抜き形成すると
ともに絞り弁案内ガイド筒のエヤークリーナー側
ガイド筒面を摺動絞り弁のエヤークリーナー側対
向側面に合致するよう吸気道に対して直角方向に
鋳抜き形成し、一方前記絞り弁案内ガイド筒内に
は、絞り弁案内ガイド筒の機関側ガイド筒面に合
致せる傾斜面と、摺動絞り弁の機関側対向側面に
合致し、吸気道に対して直角方向に形成される直
角摺動面とにより構成され、さらに前記直角摺動
面に合成樹脂材料を被膜してなるガイドブロツク
を圧入し、気化器本体のエヤークリーナー側筒面
とガイドブロツクの直角摺動面とにより絞り弁案
内筒を形成したものである。
The method of manufacturing a sliding throttle valve type carburetor according to the present invention was devised in view of the above-mentioned disadvantages, and the main purpose is to reduce manufacturing costs. A throttle valve guide cylinder is arranged in series, and the throttle valve guide cylinder is configured with a side surface facing the engine side and a side surface facing the air cleaner side, the side surface facing the engine side is arc-shaped, and each circle of the side surface facing the engine side is formed into a circular arc shape. The center of the jet needle is located within the sliding throttle valve on the engine side, including the line connecting the arcuate ends, and the air cleaner side is located from a line passing through the center of the jet needle and perpendicular to the longitudinal axis of the intake passage. This is a sliding throttle valve type carburetor in which a sliding throttle valve is arranged with a side surface facing the air cleaner side that connects an arcuate end to the air cleaner side, and is connected to an intake passage passing through the carburetor body so as to straddle the intake passage. A throttle valve guide cylinder is formed by molding the engine side guide cylinder surface of the throttle valve guide cylinder at an angle with respect to the intake passage, and the air cleaner side guide cylinder surface of the throttle valve guide cylinder is slid. A molded part is formed in a direction perpendicular to the intake passage so as to match the opposite side surface on the air cleaner side of the dynamic throttle valve, and a groove is formed in the throttle valve guide cylinder in a direction that matches the engine side guide cylinder surface of the throttle valve guide cylinder. and a right-angled sliding surface formed in a direction perpendicular to the intake passage and matching the engine-side facing side surface of the sliding throttle valve, and further coated with a synthetic resin material on the right-angled sliding surface. A guide block is press-fitted, and a throttle valve guide cylinder is formed by the air cleaner side cylinder surface of the carburetor body and the right-angled sliding surface of the guide block.
気化器本体の絞り弁案内ガイド筒内にガイドブ
ロツクを圧入して絞り弁案内筒を形成し、該絞り
弁案内筒内に摺動絞り弁を摺動自在に配置したも
のである。
A guide block is press-fitted into the throttle valve guide cylinder of the carburetor body to form a throttle valve guide cylinder, and a sliding throttle valve is slidably disposed within the throttle valve guide cylinder.
以下、本発明になる摺動絞り弁型気化器の製造
方法の一例について図によつて説明する。
Hereinafter, an example of a method for manufacturing a sliding throttle valve type carburetor according to the present invention will be explained with reference to the drawings.
１は内部を吸気道２が貫通した気化器本体であ
つて、吸気道２に連設するとともに吸気道２をま
たいで絞り弁案内ガイド筒３が開口し、一方、気
化器本体１の下方凹部と浮子室本体４とによつて
浮子室５が形成される。浮子室５内には浮子６が
配置され、この浮子によつて図示せぬ燃料流入路
の端部に配置したバルブシート及びバルブシート
を開閉するフロートバルブを操作し、もつて浮子
室５内に一定なる液面を形成保持する。 Reference numeral 1 denotes a carburetor body through which an intake passage 2 passes, and a throttle valve guide cylinder 3 is connected to the intake passage 2 and extends across the intake passage 2, while a lower concave portion of the carburetor body 1 A float chamber 5 is formed by the float chamber main body 4 and the float chamber body 4 . A float 6 is disposed within the float chamber 5, and this float operates a valve seat disposed at the end of a fuel inflow path (not shown) and a float valve that opens and closes the valve seat. Forms and maintains a constant liquid level.
７は摺動絞り弁であつてより詳細には第３図に
よつて説明される。摺動絞り弁７は、機関側に対
向する機関側対向側面７Ａ（図において右側）と
エヤークリーナー側に対向するエヤークリーナー
側対向側面７Ｂとによつて形成されるものであ
り、この機関側対向側面７Ａは円弧状（単一の半
径Ｒで半円状）に形成される。 7 is a sliding throttle valve, which will be explained in more detail with reference to FIG. The sliding throttle valve 7 is formed by an engine side facing side surface 7A (right side in the figure) facing the engine side and an air cleaner side facing side surface 7B facing the air cleaner side. The side surface 7A is formed in an arc shape (semicircular shape with a single radius R).
そして、前記機関側対向側面７Ａの円弧状端部
Ａ，Ｂを結ぶ線Ａ−Ｂ上もしくは前記線Ａ−Ｂよ
り機関側には（図において右側）後述するニード
ルジエツト内に挿入されるジエツトニードル８の
中心Ｃを配置する。より具体的には、ジエツトニ
ードル８を挿入保持するジエツトニードル挿通孔
７Ｃの孔中心を線Ａ−Ｂ上もしくは線Ａ−Ｂより
機関側に配置すればよい。 On the line A-B connecting the arcuate ends A and B of the side surface 7A facing the engine side, or on the engine side from the line A-B (on the right side in the figure), there is a jet inserted into the needle jet described later. Place the center C of the needle 8. More specifically, the center of the jet needle insertion hole 7C into which the jet needle 8 is inserted and held may be placed on the line A-B or closer to the engine than the line A-B.
そして、ジエツトニードルの中心Ｃを通り、且
つ吸気道２の長手軸心線Ｘ−Ｘに対して直交する
線Ｄ−Ｅよりエヤークリーナー側（図において左
側）に、円弧状端部Ａ，Ｂを結ぶエヤークリーナ
ー側対向側面７Ｂが形成される。 Then, on the air cleaner side (left side in the figure) from the line D-E passing through the center C of the jet needle and perpendicular to the longitudinal axis X-X of the intake passage 2, arcuate ends A and B are formed. An air cleaner side opposing side surface 7B is formed.
尚、この第３図に示す実施例においては摺動絞
り弁７に対して閉方向力を付勢するスプリングＳ
を配置することからエヤークリーナー側対向側面
７Ｂの形状はエヤークリーナー側（図においては
左側）に突部を形成したものである。また摺動絞
り弁７の吸気道２側への底部には吸気道２に開口
するニードルジエツト９に加わる負圧を制御する
ための傾斜面７Ｄ（カツタウエイ）が形成される。
そしてこのニードルジエツト９はノズル１０、及
び主燃料ジエツト１１を介して浮子室５の一定液
面下に没入される。そして、前記絞り弁案内ガイ
ド筒３は気化器本体１に次の如く穿設される。 In the embodiment shown in FIG.
Therefore, the shape of the air cleaner side facing side surface 7B is such that a protrusion is formed on the air cleaner side (left side in the figure). Further, an inclined surface 7D (cutaway) for controlling the negative pressure applied to the needle jet 9 opening into the intake passage 2 is formed at the bottom of the sliding throttle valve 7 toward the intake passage 2.
This needle jet 9 is immersed below a constant liquid level in the float chamber 5 via a nozzle 10 and a main fuel jet 11. The throttle valve guide tube 3 is bored in the carburetor main body 1 as follows.
すなわち、絞り弁案内ガイド筒３の機関側ガイ
ド筒面３Ａ（図において右側）は吸気道２に対し
て傾斜Ｚ−Ｚして鋳抜き形成される。 That is, the engine-side guide cylinder surface 3A (right side in the figure) of the throttle valve guide cylinder 3 is formed by casting so as to be inclined Z-Z with respect to the intake passage 2.
一方、絞り弁案内ガイド筒３のエヤークリーナ
ー側ガイド筒面３Ｂは摺動絞り弁７のエヤークリ
ーナー側対向側面７Ｂに合致する形状とし、しか
もこのエヤークリーナー側対向側面７Ｂは吸気道
２に対して直角方向Ｙ−Ｙに鋳抜き形成される。 On the other hand, the air cleaner side guide cylinder surface 3B of the throttle valve guide tube 3 has a shape that matches the air cleaner side opposite side surface 7B of the sliding throttle valve 7, and this air cleaner side opposite side surface 7B is opposed to the intake path 2. It is formed by casting in the perpendicular direction Y-Y.
即ち、絞り弁案内ガイド筒３は前記の如き形状
として、かかる形状のダイカスト中子を傾斜方向
Ｚ−Ｚに鋳抜くことによつて吸気道２に直角なる
エヤークリーナー側ガイド筒面３Ｂと吸気道２に
傾斜させる機関側ガイド筒面３Ａを形成できる。
（尚、両ガイド筒面３Ａ，３Ｂを吸気道２に対し
て直角方向に鋳抜き形成することはダイカスト中
子の抜き勾配の点より不可能なるものである。）
そして、第４図によく示される１２は前記絞り
弁案内ガイド筒３内に圧入されるガイドブロツで
あり、このガイドブロツク１２は、絞り弁案内ガ
イド筒３の機関側ガイド筒面３Ａの傾斜に合致す
る傾斜面１２Ａと、摺動絞り弁７の機関側対向側
面７Ａに合致し、吸気道２に対して直角方向に鋳
抜き形成される直角摺動面１２Ｂとによつて形成
される。そして、このガイドブロツク１２の直角
摺動面１２Ｂ上には、合成樹脂材料が被膜される
ものである。 That is, the throttle valve guide cylinder 3 has the shape as described above, and is formed by casting out a die-cast core having such a shape in the inclined direction Z-Z, so that the air cleaner side guide cylinder surface 3B, which is perpendicular to the intake passage 2, and the intake passage are formed. The engine-side guide cylinder surface 3A can be formed to be inclined at the angle of 2.
(Note that it is impossible to cast both guide cylinder surfaces 3A, 3B in a direction perpendicular to the intake passage 2 due to the draft angle of the die-casting core.) The reference numeral 12 shown is a guide block that is press-fitted into the throttle valve guide cylinder 3, and this guide block 12 has an inclined surface 12A that matches the slope of the engine side guide cylinder surface 3A of the throttle valve guide cylinder 3, and a sliding surface. It is formed by a right-angled sliding surface 12B that matches the engine-side facing side surface 7A of the dynamic throttle valve 7 and is formed by casting in a direction perpendicular to the intake passage 2. The right-angled sliding surface 12B of the guide block 12 is coated with a synthetic resin material.
次にその製造方法について述べると、
気化器本体１の成形完成後の状態において、絞
り弁案内ガイド筒３は鋳抜き形成されており、か
かる状態においてガイドブロツク１２を絞り弁案
内ガイド筒３内に圧入する。この時ガイドブロツ
ク１２の傾斜面１２は絞り弁案内ガイド筒３の機
関側ガイド筒面３Ａに対接して圧入するものであ
る。 Next, the manufacturing method will be described. After the molding of the carburetor main body 1 is completed, the throttle valve guide tube 3 is formed by casting. In this state, the guide block 12 is inserted into the throttle valve guide tube 3. Press fit. At this time, the inclined surface 12 of the guide block 12 is pressed into contact with the engine-side guide cylinder surface 3A of the throttle valve guide cylinder 3.
従つて気化器本体１の絞り弁案内ガイド筒３に
は、気化器本体１エヤークリーナー側ガイド筒面
３Ｂとガイドブロツク１２の直角摺動面１２Ｂと
によつて摺動絞り弁７の形状に完全に合致した絞
り弁案内筒Ｔが形成されるものであり、前記エヤ
ークリーナー側ガイド筒面３Ｂ及び直角摺動面１
２Ｂともに吸気道２に対して直角方向に形成され
うるものである。 Therefore, the throttle valve guide guide tube 3 of the carburetor body 1 is completely shaped into the shape of the sliding throttle valve 7 by the air cleaner side guide tube surface 3B of the carburetor body 1 and the right-angled sliding surface 12B of the guide block 12. A throttle valve guide cylinder T is formed that matches the air cleaner side guide cylinder surface 3B and the right angle sliding surface 1.
2B can be formed perpendicularly to the intake passage 2.
尚、ガイドブロツク１２に穿設される通孔１２
Ｃはガイドブロツク１２の単体時にあらかじめ穿
設しても、あるいは気化器本体１にガイドブロツ
ク１２を圧入したのちにおいて吸気道２の加工と
同時に行つてもよいものである。 Note that the through hole 12 bored in the guide block 12
C may be drilled in advance when the guide block 12 is alone, or may be drilled simultaneously with the machining of the intake passage 2 after the guide block 12 is press-fitted into the carburetor body 1.
かかる如く、絞り弁案内筒Ｔを形成したのちに
摺動絞り弁７その他の部品を順次組み込めばよい
ものである。 In this manner, after forming the throttle valve guide tube T, the sliding throttle valve 7 and other parts may be assembled one after another.
以上のように本発明による摺動絞り弁型気化器
によると次の効果を奏する。
As described above, the sliding throttle valve type carburetor according to the present invention provides the following effects.
気化器本体に鋳抜き形成した絞り弁案内ガイ
ド筒内にガイドブロツクを圧入することによつ
て摺動絞り弁の形状に完全に合致した絞り弁案
内筒が形成できるものであり、しかも摺動絞り
弁の機関側及びエヤークリーナー対向側面に対
応するそれぞれの直角摺動面を確実に形成でき
るものである。これは絞り弁案内ガイド筒のエ
ヤークリーナー側ガイド筒面及びガイドブロツ
クの直角摺動面を形成する際に成形で直角摺動
面を形成できたことによるもので、かかる如く
絞り弁案内筒を形成することにより絞り弁案内
筒の加工を全廃でき気化器の製造コストを大幅
に低減できるものである。 By press-fitting the guide block into the throttle valve guide tube formed by casting in the carburetor body, it is possible to form a throttle valve guide tube that perfectly matches the shape of the sliding throttle valve. It is possible to reliably form right-angled sliding surfaces corresponding to the engine side of the valve and the side facing the air cleaner. This is because when forming the air cleaner side guide cylinder surface of the throttle valve guide cylinder and the right angle sliding surface of the guide block, a right angle sliding surface could be formed by molding, and the throttle valve guide cylinder was formed in this way. By doing so, processing of the throttle valve guide cylinder can be completely eliminated, and the manufacturing cost of the carburetor can be significantly reduced.
摺動絞り弁の機関側対向側面に対応するガイ
ドブロツクの直角摺動面を合成樹脂材料にて被
膜し、しかもその被膜を含めたガイドブロツク
を加工を行なうことなく成形のみで行なつたの
で、摺動絞り弁に対する摩擦抵抗を減少でき摺
動絞り弁に対する動作性、耐摩耗性の大幅な向
上を図りうるものである。 The right-angled sliding surface of the guide block corresponding to the side facing the engine side of the sliding throttle valve was coated with a synthetic resin material, and the guide block including the coating was formed only by molding without any processing. The frictional resistance to the sliding throttle valve can be reduced, and the operability and wear resistance of the sliding throttle valve can be greatly improved.
さらにまたこの直角摺動面は一度金型を決定
すると該面の面粗度、変形は均一に保障できる
ので摺動絞り弁の機関側対向側面に対する密着
度が均一に抑止でき、これは気化器の最低空気
量の制御を容易としたものである。 Furthermore, once the mold is determined, this right-angled sliding surface can ensure uniform surface roughness and deformation of the surface, so that the degree of adhesion of the sliding throttle valve to the side opposite to the engine side can be uniformly suppressed. This makes it easy to control the minimum amount of air.
第１図は本発明になる摺動絞り弁型気化器製造
方法の一実施例を示す縦断面図、第２図は第１図
の上蓋を取外した状態の上部平面図、第３図は第
１図に使用される摺動絞り弁の上部平面よりの詳
細説明図、第４図はガイドブロツクの斜視図であ
る。
１……気化器本体、２……吸気道、３……絞り
弁案内ガイド筒、３Ａ……機関側ガイド筒面、３
Ｂ……エヤークリーナー側ガイド筒面、７……摺
動絞り弁、７Ａ……機関側対向側面、７Ｂ……エ
ヤークリーナー側対向側面、１２……ガイドブロ
ツク。
FIG. 1 is a longitudinal cross-sectional view showing an embodiment of the method for manufacturing a sliding throttle valve type carburetor according to the present invention, FIG. 2 is a top plan view with the top cover of FIG. 1 removed, and FIG. FIG. 1 is a detailed explanatory view from above of the sliding throttle valve used, and FIG. 4 is a perspective view of the guide block. 1... Carburetor body, 2... Intake path, 3... Throttle valve guide guide cylinder, 3A... Engine side guide cylinder surface, 3
B... Air cleaner side guide cylinder surface, 7... Sliding throttle valve, 7A... Engine side opposing side, 7B... Air cleaner side opposing side, 12... Guide block.
Claims (1)
内筒を連設し、該絞り弁案内筒内に、機関側対向
側面７Ａとエヤークリーナー側対向側面７Ｂとに
より構成し、前記機関側対向側面を円弧状とし、
該機関側対向側面の各円弧状端部Ａ，Ｂを結ぶ線
Ａ−Ｂを含む機関側の摺動絞り弁７内にジエツト
ニードル８の中心Ｃを配置するとともに、前記ジ
エツトニードルの中心Ｃを通り吸気道２の長手方
向軸心線Ｘ−Ｘに直交する線Ｅ−Ｄよりエヤーク
リーナー側に円弧状端部Ａ，Ｂを結ぶエヤークリ
ーナー側対向側面７Ｂを形成した摺動絞り弁７を
配置した摺動絞り弁型気化器であつて、気化器本
体１を貫通する吸気道２に連設して吸気道２をま
たいで絞り弁案内ガイド筒３を形成し、該絞り弁
案内ガイド筒３の機関側ガイド筒面３Ａを吸気道
２に対して傾斜して鋳抜き形成するとともに絞り
弁案内ガイド筒３のエヤークリーナー側ガイド筒
面３Ｂを摺動絞り弁７のエヤークリーナー側対向
側面７Ｂに合致するよう吸気道２に対して直角方
向に鋳抜き形成し、一方前記絞り弁案内ガイド筒
３内には、絞り弁案内ガイド筒３の機関側ガイド
筒面３Ａに合致せる傾斜面１２Ａと、摺動絞り弁
７の機関側対向側面７Ａに合致し、吸気道２に対
して直角方向に形成される直角摺動面１２Ｂとに
より構成され、さらに前記直角摺動面に合成樹脂
材料を被膜してなるガイドブロツク１２を圧入
し、気化器本体１のエヤークリーナー側筒面３Ｂ
とガイドブロツク１２の直角摺動面１２Ｂとによ
り絞り弁案内筒Ｔを形成してなる摺動絞り弁型気
化器の製造方法。1. A throttle valve guide cylinder is connected to the intake passage 2 passing through the carburetor main body 1, and the throttle valve guide cylinder is configured with a side surface 7A facing the engine side and a side surface 7B facing the air cleaner side, The sides are arcuate,
The center C of the jet needle 8 is located within the sliding throttle valve 7 on the engine side that includes the line A-B connecting the arcuate ends A and B on the side surface facing the engine side, and the center C of the jet needle 8 is located within the sliding throttle valve 7 on the engine side. A sliding throttle valve 7 having an air cleaner side facing side surface 7B connecting arcuate ends A and B on the air cleaner side from a line E-D passing through C and perpendicular to the longitudinal axis X-X of the intake passage 2. This is a sliding throttle valve type carburetor in which a throttle valve guide cylinder 3 is formed which is connected to an intake passage 2 passing through a carburetor main body 1 and straddles the intake passage 2. The engine side guide cylinder surface 3A of the cylinder 3 is formed by casting so as to be inclined with respect to the intake passage 2, and the air cleaner side guide cylinder surface 3B of the throttle valve guide guide cylinder 3 is formed by molding. 7B, and formed by casting in the direction perpendicular to the intake passage 2, and inside the throttle valve guide tube 3 is an inclined surface 12A that conforms to the engine side guide tube surface 3A of the throttle valve guide tube 3. and a right-angled sliding surface 12B formed in a direction perpendicular to the intake passage 2 and coinciding with the engine-side facing side surface 7A of the sliding throttle valve 7, further comprising a synthetic resin material on the right-angled sliding surface. Press-fit the guide block 12 made of a coating onto the air cleaner side cylindrical surface 3B of the carburetor main body 1.
and a right-angled sliding surface 12B of a guide block 12 to form a throttle valve guide tube T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30610886A JPS63159653A (en) | 1986-12-22 | 1986-12-22 | Producing method for slide throttle valve type carbureter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30610886A JPS63159653A (en) | 1986-12-22 | 1986-12-22 | Producing method for slide throttle valve type carbureter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63159653A JPS63159653A (en) | 1988-07-02 |
| JPH0478829B2 true JPH0478829B2 (en) | 1992-12-14 |
Family
ID=17953134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30610886A Granted JPS63159653A (en) | 1986-12-22 | 1986-12-22 | Producing method for slide throttle valve type carbureter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63159653A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5412103U (en) * | 1977-06-28 | 1979-01-26 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6061464U (en) * | 1983-10-04 | 1985-04-30 | 株式会社京浜精機製作所 | vaporizer |
-
1986
- 1986-12-22 JP JP30610886A patent/JPS63159653A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5412103U (en) * | 1977-06-28 | 1979-01-26 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63159653A (en) | 1988-07-02 |
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