JPS63159653A - Producing method for slide throttle valve type carbureter - Google Patents
Producing method for slide throttle valve type carbureterInfo
- Publication number
- JPS63159653A JPS63159653A JP30610886A JP30610886A JPS63159653A JP S63159653 A JPS63159653 A JP S63159653A JP 30610886 A JP30610886 A JP 30610886A JP 30610886 A JP30610886 A JP 30610886A JP S63159653 A JPS63159653 A JP S63159653A
- Authority
- JP
- Japan
- Prior art keywords
- throttle valve
- sliding
- air cleaner
- intake passage
- guide cylinder
- 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
- 238000000034 method Methods 0.000 title description 4
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000005266 casting Methods 0.000 claims description 10
- 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
- 238000000465 moulding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000446 fuel Substances 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
- 238000003801 milling Methods 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 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
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 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〕
本発明は機関へ供給する混合気の量及び濃ｍ”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
器どしてよく用いられる。[Detailed description of the invention] [Industrial field of application] The present invention adjusts the amount and concentration of air-fuel mixture supplied to an engine,
This article relates to a carburetor to be controlled, and in particular relates to a method for manufacturing a sliding throttle valve type carburetor in which a throttle valve is movably arranged in a throttle valve guide tube connected to an intake passage, and is used in conjunction with a carburetor for a motorcycle engine. It is often used.
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って、特に小型で高山化傾向に
あることから気化器の吸入効率の向丘が望まれるもので
ある。この吸入効率の向ヒを目上した気化器は本件出願
人の出願になる特願昭６１−１５２９４０号によって達
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 and more expensive, it is desirable to improve the suction efficiency of the carburetor. A vaporizer aiming at improving this suction efficiency was achieved by Japanese Patent Application No. 152940/1983 filed by the present applicant.
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ェットニードルの中心を
配置するとともに、前記ジェッ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. The center of the jet needle is located in the sliding throttle valve on the side, and the arcuate end is connected to 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. This sliding throttle valve is arranged in the throttle valve guide cylinder, and the groove of the guide part of the sliding throttle valve to the carburetor body can be made extremely small. According to this, the suction efficiency of the engine was maintained well.
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
行っている。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って行なわれ
るので加工工数がかかり製造コスト高を招来する。■The throttle valve guide cylinder is processed by milling, which requires many man-hours and increases manufacturing costs.
■加工によって得られる表面粗度が変化すると。■When the surface roughness obtained through processing changes.
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・−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。The sliding resistance and wear resistance of a sliding throttle valve change significantly, and for this reason, it is necessary to obtain an even surface roughness, making it difficult to control cutting conditions such as cutting tools.
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
内にジェットニードルの中心を配置するとともに、前記
ジェッ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って、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ックを圧入し、
気化器本体のエヤークリーナー側筒面とガイドブロック
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 within the throttle valve guide cylinder,
It is composed of a side surface facing the engine side and a side surface facing the air cleaner side. A sliding throttle valve in which the center of the needle is arranged and a side surface facing the air cleaner side is formed that connects an 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. A sliding throttle valve type carburetor is provided with a throttle valve guide tube, which is connected to an intake passage passing through the carburetor body to form a throttle valve guide cylinder that straddles the intake passage; The guide cylinder surface is formed by casting so as to be inclined with respect to the intake passage, and the guide cylinder surface on the air cleaner side of the throttle valve guide guide cylinder is perpendicular to the intake passage so that it matches the opposite side surface on the air cleaner side of the sliding throttle valve. On the other hand, the throttle valve guide cylinder has an inclined surface that matches the engine side guide cylinder surface of the throttle valve guide cylinder, and a slope face that matches the engine side opposite side surface of the sliding throttle valve. a right-angled sliding surface formed in a direction perpendicular to the road, and a guide block coated with a synthetic resin material is press-fitted into the right-angled sliding surface,
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ックを
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
例について図によって説明する。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.
ｌは内部を吸気道２が貫通した気化器本体であって、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の下方四部
と浮子室本体４どによって浮子室５が形成される。浮子
室５内には浮子６が配置され、この浮子によって図示せ
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、もって浮子
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 through, and a throttle valve guide cylinder 3 is connected to the intake passage 2 and extends across the intake passage 2, while the lower four parts of the carburetor body 1 are A float chamber 5 is formed by the float chamber body 4 and the like. 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, thereby maintaining a constant level of liquid within the float chamber 5. Form and hold the surface.
７は摺動絞り弁であってより詳細には第３図によって説
明される。摺動絞り弁７は１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とによって
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 first engine side and an air cleaner side facing side surface 7B facing the air cleaner side. 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ェット内に挿入さ
れるジェットニードル８の中心Ｃを配置する。より具体
的には、ジェットニードル８を挿入保持するジェットニ
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 engine side facing side surface 7A or on the engine side from the line A-B, (
(Right side in the figure) Place the center C of the jet needle 8 to be inserted into the needle jet described later. More specifically, the hole center of the jet needle insertion hole 7C into which the jet needle 8 is inserted and held is aligned with the line A-B or the line A-
It may be placed closer to the engine than B.
そして、ジェットニードルの中心Ｃを通り、且つ吸気道
２の長子軸心線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, an arcuate end A is located on the air cleaner side (left side in the figure) from a line DE passing through the center C of the jet needle and perpendicular to the longitudinal axis x-X of the intake passage 2.
, B is formed to form an air cleaner side opposing side surface 7B.
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ｚ側への底部には吸
気道２に開口するニードルジェット９に加わる負圧を制
御するための傾斜面７Ｄ（カッタウェイ）が形成される
。そしてこのニードルジェット９はノズル１０、及び主
燃料ジェット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. 3, since a spring S is arranged to apply a force in the closing direction to the sliding throttle valve 7, the shape of the side surface 7B facing the air cleaner side is the same as that of the air cleaner side (in the figure). A protrusion is formed on the left side). 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 z side. 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３
Ａ（図において右側）は吸気道２に対して傾斜Ｚ−ＺＬ
、て鋳抜き形成される。That is, the engine side guide cylinder surface 3 of the throttle valve guide guide cylinder 3
A (right side in the figure) is inclined Z-ZL with respect to the intake path 2
, formed by casting.
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−２に鋳抜く
ことによって吸気道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に傾斜せる機関側ガイド筒面３
Ａ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。That is, the throttle valve guide cylinder 3 has the shape as described above,
By casting out a die-cast core having such a shape in the inclination direction Z-2, an air cleaner side guide cylinder surface 3B that is perpendicular to the intake passage 2 and an engine side guide cylinder surface 3 that is inclined toward the intake passage 2 are created.
A can be formed. (Note that it is impossible to form both guide cylinder surfaces 3A and 3B by casting in a direction perpendicular to the intake passage 2 due to the draft angle of the die-casting core.
）
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ックであり、 この
ガイドブロック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
よって形成される。そして、このガイドブロック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。) Reference numeral 12, clearly shown in FIG. 4, is a guide block that is press-fitted into the throttle valve guide cylinder 3. and a right-angled sliding surface 12B that matches the engine-side facing side surface 7A of the sliding throttle valve 7 and is cast in a direction perpendicular to the intake passage 2. The right-angled sliding surface 12B of this 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
てガイドブロック１２を絞り弁案内ガイド筒３内、に圧
入する。この時ガイドブロック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 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 into. 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.
従って気化器本体ｌの絞り弁案内ガイド筒３には、気化
器本体１のエヤークリーナー側ガイド筒面３Ｂとガイド
ブロック１２の直角摺動面１２Ｂとによって摺動絞り弁
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１２Ｂともに吸気道２に対して直角方向に
形成されうるちのである。Therefore, the throttle valve guide guide tube 3 of the carburetor body 1 perfectly matches 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. The air cleaner side guide cylinder surface 3B and the right-angled sliding surface 12B are both formed in a direction perpendicular to the intake passage 2.
尚、ガイドブロック１２に穿設される通孔１２Ｃはガイ
ドブロック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ｌにガイドブロック１２を圧入したのち
において吸気道２の加工と同時に行ってもよいものであ
る。Note that the through hole 12C drilled in the guide block 12 can be drilled in advance when the guide block 12 is a standalone unit, or it can be drilled simultaneously with the machining of the intake passage 2 after the guide block 12 is press-fitted into the carburetor main body l. It's also good.
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な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 of 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
ガイドブロックを圧入することによって摺動絞り弁の形
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一対
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ックの直角摺動面
を成形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 a guide block into the throttle valve guide tube formed by casting in the carburetor body, a throttle valve guide tube that perfectly matches the shape of the sliding throttle valve can be formed. It is possible to reliably form right-angled sliding surfaces corresponding to the engine side and the opposite side of the air cleaner. This is because when molding 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ッ
クの直角摺動面を合成ｍ脂材料にて被膜し、しかもその
被膜を含めたガイドプロッタを加工を行なうことなく成
形のみで行なったので、摺動絞り弁に対する摩擦抵抗を
減少でき摺動絞り升に対する動作性、＃摩耗性の大幅な
向上を図りうるちのである。■The right-angled sliding surface of the guide block, which corresponds to the side facing the engine side of the sliding throttle valve, is coated with a synthetic resin material, and the guide plotter including the coating is made only by molding without any processing. The frictional resistance against 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線面
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 linear surface, so 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
絞リブｆ−のＬ部平面よりの詳細説明図、第４図はガイ
ドブロックの斜視図ｒある。
１１０．気化器本体、 ２．、、吸ス道、３１９．
絞り弁案内ガイド筒、 ３Ａ、、、機関側ガイド筒面、
３Ｂ、、、エヤークリーナー側ガイド筒面、 ７０
０．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
イドブロック。
＋ −”：−
ｔ２ 、？”）
ン夕９FIG. 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 of FIG. 1 with the top cover removed, and FIG. FIG. 1 is a detailed explanatory view of the L portion of the sliding diaphragm rib f- used, and FIG. 4 is a perspective view of the guide block. 110. vaporizer body, 2. ,, suction duct, 319.
Throttle valve guide guide cylinder, 3A, Engine side guide cylinder surface,
3B, Air cleaner side guide cylinder surface, 70
0. Sliding throttle valve, 7A, engine side opposite side, 7B,
,, side surface opposite to the air cleaner side, 12. ,,Guide block. + -”:-t2,?”) n evening 9
Claims (1)
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
にジエットニードル８の中心Ｃを配置するとともに、前
記ジエットニードルの中心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
気化器であって、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ック１２を圧入し、気化器本
体１のエヤークリーナー側筒面３Ｂとガイドブロック１
２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。A throttle valve guide cylinder is connected to the intake passage 2 that penetrates the carburetor 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, and the side surface facing the engine side. is arcuate, and 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 facing the engine side, and the jet needle 8 is A sliding surface 7B that connects the arcuate ends A and B on the air cleaner side from a line E-D passing through the center C of the needle and orthogonal to the longitudinal axis X-X of the intake passage 2. This is a sliding throttle valve type carburetor in which a throttle valve 7 is disposed, and a throttle valve guide tube 3 is formed in a continuous manner with an intake passage 2 passing through the carburetor body 1 and straddles the intake passage 2. The engine side guide cylinder surface 3A of the valve guide guide 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 cylinder 3 is formed by casting.
is formed by casting in a direction perpendicular to the intake passage 2 so as to match the air cleaner side opposite side surface 7B of the sliding throttle valve 7,
On the other hand, inside the throttle valve guide tube 3, there is an inclined surface 12A that matches 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. A guide block 12 made of a film is press-fitted, and the air cleaner side cylindrical surface 3B of the carburetor main body 1 and the guide block 1 are press-fitted.
A method of manufacturing a sliding throttle valve type carburetor in which a throttle valve guide tube T is formed by two orthogonal sliding surfaces 12B.
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 true JPS63159653A (en) | 1988-07-02 |
| JPH0478829B2 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5412103U (en) * | 1977-06-28 | 1979-01-26 | ||
| 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5412103U (en) * | 1977-06-28 | 1979-01-26 | ||
| JPS6061464U (en) * | 1983-10-04 | 1985-04-30 | 株式会社京浜精機製作所 | vaporizer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0478829B2 (en) | 1992-12-14 |
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