JPS6137799Y2 - - Google Patents

Description

【考案の詳細な説明】 本考案は複数吸気筒気化器装着機関の場合のそ
の複数吸気筒の絞弁連動装置に関する。１個の気
化器本体に複数の吸気筒を設ける方式の気化器の
場合でも、又複数個の気化器を装着する場合で
も、夫々の吸気筒の混合気絞弁は夫々の機関シリ
ンダーのアイドリング運転を調整可能にするよう
に、その絞弁軸が個々に切離されるようにされる
のがこの種気化器の一般の構成で、そしてすべて
の絞弁が同時開閉操作が行われるように連結され
る。このように夫々の吸気筒の絞弁軸が別個のも
のとされるので、その回動作動時に夫々の絞弁軸
の中心線が正確に一軸中心線と一致した回動作動
を行い得ない為、気化器によつては絞弁の開閉時
に吸気筒内面とのカジリを生ずることが発生す
る。又吸気筒本体と絞弁と絞弁軸との熱膨張係数
の差により運転中の加温によつて、或る絞弁軸は
歪作動現象を起して上記のカジリを生ずる。又こ
のようなカジリ現象を防止するために、各絞弁軸
又は絞弁に吸気筒に対する余裕を持たせておく
と、絞弁の開閉操作において吸気筒に対するガタ
を生じて、すべての絞弁の正確な開閉作動を行い
得ない不具合を生ずる。本考案は各吸気筒に対し
て夫々の絞弁を正確にアイドリング調整を行わ
せ、そして絞弁の開閉作動も正確な一中心線によ
る回動作動とし得て、上記の如き不具合をすべて
解消する多連気化器の絞弁連動装置とすることを
目的とするものである。[Detailed Description of the Invention] The present invention relates to a throttle valve interlocking device for a plurality of intake cylinders in an engine equipped with a plurality of intake cylinders and a carburetor. Even in the case of a carburetor that has multiple intake cylinders in one carburetor body, or even when multiple carburetors are installed, the air-fuel mixture throttle valve of each intake cylinder is controlled by the idling operation of each engine cylinder. The general configuration of this kind of carburetor is that the throttle valve shafts are individually separated so that the throttle valves can be adjusted, and all the throttle valves are connected so that they can be opened and closed simultaneously. Ru. In this way, since the throttle valve shafts of each intake cylinder are separate, it is not possible to perform a rotation movement in which the center line of each throttle valve axis accurately coincides with the center line of one axis during the rotation movement. Depending on the carburetor, galling may occur with the inner surface of the intake cylinder when the throttle valve opens and closes. Furthermore, due to the difference in thermal expansion coefficients between the intake cylinder body, the throttle valve, and the throttle valve shaft, some throttle valve shafts become distorted due to heating during operation, resulting in the above-mentioned galling. In addition, in order to prevent such galling phenomenon, if each throttle valve shaft or throttle valve is made to have a margin with respect to the intake cylinder, play in the intake cylinder will occur when opening and closing the throttle valve, and all throttle valves will be This causes a problem in which accurate opening and closing operations cannot be performed. The present invention allows accurate idling adjustment of each throttle valve for each intake cylinder, and also allows the opening and closing of the throttle valve to be a precise rotational movement based on one center line, thereby eliminating all of the above-mentioned problems. The purpose is to use it as a throttle valve interlocking device for multiple carburetors.

次に本考案を実施例図を参照して説明する。第
１図は２個の絞弁１・２を、本考案に係る連結装
置１０で連結した状態を示す平面図で、該連結装
置１０は絞弁１の弁軸３にピン５で固定される連
結部材１１と、絞弁２の弁軸４にピン６で固定さ
れる連結部材１２とからなり、該両連結部材１
１・１２はその一方側に装着された圧縮コイルば
ね１３に弾撥されて連結部される。そしてその反
対側に調節ねじ１４が取付けられる。 Next, the present invention will be explained with reference to embodiment figures. FIG. 1 is a plan view showing a state in which two throttle valves 1 and 2 are connected by a connecting device 10 according to the present invention, and the connecting device 10 is fixed to the valve shaft 3 of the throttle valve 1 with a pin 5. Consisting of a connecting member 11 and a connecting member 12 fixed to the valve shaft 4 of the throttle valve 2 with a pin 6, both connecting members 1
1 and 12 are elastically resiliently connected by a compression coil spring 13 attached to one side thereof. An adjusting screw 14 is attached to the opposite side.

上記連結部材１１のみのＡ矢視側面図を第２図
に、その底面図を第３図に示す。連結部材１１の
連結部材体１５に上記弁軸３を取付けるボス１６
が設けられ、該ボス１６に上記固定ピン５の係止
孔５′があけられる。該ボス１６は上記連結部材
体１６の中央部から絞弁側（該連結部材体１５の
弁軸通孔１７に弁軸３を通した時）に突出して形
成され、その連結部材体中央部端面１８は連結部
材体１５の中心よりも若干内側（絞弁側）にされ
ている。そして該端面１８部にリセス１９が設け
られる。２０は上記圧縮コイルばね１３の収納
孔；２１は上記調節ねじ１４のねじ孔である。 A side view of only the connecting member 11 in the direction of arrow A is shown in FIG. 2, and a bottom view thereof is shown in FIG. 3. Boss 16 for attaching the valve shaft 3 to the connecting member body 15 of the connecting member 11
A locking hole 5' for the fixing pin 5 is formed in the boss 16. The boss 16 is formed to protrude from the central portion of the connecting member body 16 toward the throttle valve side (when the valve shaft 3 is passed through the valve shaft through hole 17 of the connecting member body 15), and is formed on the end surface of the central portion of the connecting member body. The reference numeral 18 is located slightly inside the center of the connecting member body 15 (on the throttle valve side). A recess 19 is provided in the end face 18 portion. 20 is a storage hole for the compression coil spring 13; 21 is a screw hole for the adjustment screw 14.

上記連結部材１１と係合し弁軸４を固定する連
結部材１２について、そのＢ矢視側面図を第４図
に、Ａ矢視側面図を第５図に、又その平面図を第
６図に示す。該連結部材１２は上記連結部材１１
と対象に形成され、弁軸４の通孔２２のボス２３
は上記連結部材１１の弁軸通孔ボス１６と同様に
その端面２４が連結部材体２５の中心よりも若干
絞弁２側とされ、該端面２４から上記連結部材１
１のボス１６のリセス１９に嵌合する突部２６が
突出形成される。このようにされて連結部材１１
の弁軸通孔１７に弁軸３が通され、連結部材１２
の弁軸通孔２２に弁軸４が通され、両弁軸は夫々
連結部材のボス１６・２３にピン５・６で固定さ
れ（６′は固定ピン６の係止め孔である）、該両部
材１１・１２のばね収納孔２０に圧縮コイルばね
１４が収められ、調節ねじ１３で締付けられるの
で、連結部材１１と１２とはコイルばね１４の圧
縮圧力によつてしつかりと連結される。この連結
時の連結装置１０のＡ矢視側面図を第７図に示
す。２７は連結部材１１・１２を連結後弁軸（即
ち絞弁）角度を調節ロツクするためのロツク・ナ
ツトである。 Regarding the connecting member 12 that engages with the connecting member 11 and fixes the valve shaft 4, a side view as viewed from arrow B is shown in FIG. 4, a side view as viewed from arrow A is shown in FIG. 5, and a plan view thereof is shown in FIG. 6. Shown below. The connecting member 12 is the connecting member 11
The boss 23 of the through hole 22 of the valve stem 4 is formed symmetrically with the
Like the valve shaft through hole boss 16 of the connecting member 11, its end face 24 is slightly closer to the throttle valve 2 than the center of the connecting member body 25, and the connecting member 1
A protrusion 26 that fits into the recess 19 of the first boss 16 is formed to protrude. In this way, the connecting member 11
The valve shaft 3 is passed through the valve shaft through hole 17 of the connecting member 12.
The valve stem 4 is passed through the valve stem passage hole 22 of the valve stem, and both valve stems are fixed to the bosses 16 and 23 of the connecting member with pins 5 and 6 (6' is a locking hole for the fixing pin 6). The compression coil spring 14 is housed in the spring housing holes 20 of both members 11 and 12 and tightened with the adjusting screw 13, so that the connecting members 11 and 12 are firmly connected by the compression pressure of the coil spring 14. A side view of the coupling device 10 viewed from arrow A in this state of coupling is shown in FIG. Numeral 27 is a lock nut for adjusting and locking the valve shaft (ie, throttle valve) angle after the connecting members 11 and 12 are connected.

そして弁軸３と４とは上記のように夫々連結部
材１１・１２を介して連結されるのであるが、第
８図に両弁軸３・４のみを示すように、弁軸４の
弁軸３側尖端に小径突起７を突出形成し、弁軸３
の弁軸４側尖端部に上記弁軸３の突起７を嵌入す
る嵌合孔８を設け、両軸は上記連結部材１１，１
２により連結された時突起７と嵌合孔８とにより
回動自在に係合されるようになるものである。
５″はピン５の係止め孔、９は絞弁１・２の掛止
め溝、９′は絞弁の固定ねじ孔である。 The valve shafts 3 and 4 are connected via the connecting members 11 and 12, respectively, as described above, but as shown in FIG. 8, only the valve shafts 3 and 4 are connected to each other. A small-diameter protrusion 7 is formed protrudingly on the tip of the third side, and the valve shaft 3
A fitting hole 8 into which the protrusion 7 of the valve shaft 3 is fitted is provided at the cusp end on the side of the valve shaft 4, and both shafts are connected to the connecting members 11, 1.
2, the protrusion 7 and the fitting hole 8 engage each other in a rotatable manner.
5'' is a locking hole for the pin 5, 9 is a locking groove for the throttle valves 1 and 2, and 9' is a fixing screw hole for the throttle valve.

上記のように構成されるので、多連気化器の各
吸気筒に絞弁軸３・４を通して、これを連結装置
１０で連結し絞弁１，２を取付けるが、絞弁軸は
夫々の連結部材１１・１２を介しばね１３による
圧縮圧力により連結されているので、ばねの圧縮
圧力を大きくとればしつかりと連結され、両弁軸
の一体作動を正確・確実なものとする。そして調
節ねじの調節により各絞弁の夫々の吸気筒に対す
る角度の微調整が別個単独にそして極めて容易に
可能である（第７図において調節ねじ１４の調節
により連結部材１１・１２の関係角度が変化す
る）。又弁軸３・４は別個の単独の軸ではある
が、その尖端で嵌合部７・８を設けて軸中心方向
に自由係合とされ、又該軸を固定する夫々の連結
部材１１・１２のボス１６・２３も密着接合では
ないので、弁軸と吸気筒本体における熱膨張の問
題があつても、弁軸中心線方向の歪の問題は発生
せずに絞弁のカジリ等の不具合はなくなるもので
ある。 Since it is configured as described above, the throttle valve shafts 3 and 4 are passed through each intake cylinder of the multiple carburetor, and these are connected by the connecting device 10, and the throttle valves 1 and 2 are attached. Since they are connected via the members 11 and 12 by the compression pressure of the spring 13, if the compression pressure of the spring is increased, the connection will be firmly established, and the integral operation of both valve shafts will be accurate and reliable. By adjusting the adjusting screws, it is possible to finely adjust the angle of each throttle valve with respect to the respective intake cylinder separately and very easily (in FIG. 7, by adjusting the adjusting screws 14, the relative angle of the connecting members 11 and 12 can be adjusted. Change). Further, although the valve shafts 3 and 4 are separate and independent shafts, fitting portions 7 and 8 are provided at the tips of the valve shafts so that they can be freely engaged in the shaft center direction, and respective connecting members 11 and 8 that fix the shafts are provided. Since the bosses 16 and 23 of No. 12 are not tightly joined, even if there is a thermal expansion problem between the valve shaft and the intake cylinder body, there will be no problem of distortion in the direction of the valve shaft center line, and problems such as galling of the throttle valve will be avoided. will disappear.

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

第１図は２個の絞弁軸を連結する連結装置の本
考案実施例を示す平面図、第２図は第１図の連結
装置の１の連結部材を示すＡ矢視側面図、第３図
はその底面図、第４図は第１図の他の連結部材を
示すＢ矢視側面図、第５図はそのＡ矢視側面図、
第６図はその平面図、第７図は第１図の連結装置
全体のＡ矢視側面図、第８図は絞弁軸のみの連結
状態を示す。 １……絞弁、２……絞弁、３……絞弁軸、４…
…絞弁軸、５……固定ピン，６……固定ピン，１
０……連結装置、１１……連結部材、１２……連
結部材、１３……圧縮コイルばね、１４……調節
ねじ。 FIG. 1 is a plan view showing an embodiment of the present invention of a connecting device for connecting two throttle valve shafts, FIG. The figure is a bottom view, FIG. 4 is a side view as seen from arrow B, showing another connecting member in FIG. 1, and FIG. 5 is a side view as seen from arrow A.
FIG. 6 is a plan view thereof, FIG. 7 is a side view of the entire connecting device shown in FIG. 1 as viewed from arrow A, and FIG. 8 shows a state in which only the throttle valve shaft is connected. 1...throttle valve, 2...throttle valve, 3...throttle valve shaft, 4...
...throttle valve shaft, 5...fixing pin, 6...fixing pin, 1
0... Connecting device, 11... Connecting member, 12... Connecting member, 13... Compression coil spring, 14... Adjusting screw.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 各吸気筒毎の絞弁軸を有し該絞弁軸に夫々連結
部材を固定し該両連結部材はその一方側において
弾撥手段を他方側において調節ねじを備え、上記
弾撥手段により上記両連結部材を連結し上記調節
ねじにより上記弾撥力に抗して上記絞弁軸の個々
の角度調整を行い、更に上記夫々の絞弁軸は回動
自在の軸方向係合とされたことを特徴とする多連
気化器の絞弁連動装置 Each intake cylinder has a throttle valve shaft, and a connecting member is fixed to each throttle valve shaft, and each of the connecting members is provided with a resilient means on one side and an adjusting screw on the other side. The connecting members are connected and the adjustment screws are used to adjust the individual angles of the throttle valve shafts against the elastic force, and each of the throttle valve shafts is engaged in a rotatable axial direction. Features: Throttle valve interlocking device for multiple carburetors