JPH0452444Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a throttle valve interlocking device in a symmetrical multiple carburetor used in a V-type engine or the like.

<Prior Art> Conventionally, two carburetors are arranged symmetrically, and the throttle valves of one carburetor and the other carburetor are rotated in opposite directions. Conventionally known examples of inter-gas converters include Japanese Utility Model Publication No. 1972-29368, Japanese Patent Publication No. 45-25044, and Japanese Unexamined Patent Publication No. 1983-3936.
Publication No. 53-29852, Japanese Unexamined Patent Application Publication No. 1983-29852
There are publications such as No. 138453.

As one of the interlocking devices between these throttle valves,
For example, as shown in Figure 3, wires, belts, etc.
Connect the throttle valve shafts c and c' of each carburetor b and b' with
Alternatively, as shown in FIG. 4, it is common practice to connect them using a link mechanism using rods d.

<Problems with the prior art> However, in the former case, there is a drawback that the throttle valve opening becomes out of synchronization due to the elongation of wires, belts, etc. due to long-term use, and the both ends of the rod d are connected to the throttle valve shaft c, In the latter case, in which the rod d is engaged with the actuating levers e and e' fixed to the valve c', the rod d moves in the direction of the arrow A or B in Fig. 2 as the throttle valve shaft rotates.
Since the lengths l and l' of perpendicular lines drawn from the center of each throttle valve axis c and c' to the axis g of rod d change with the throttle valve opening, the throttle valve axis of each carburetor b and b' There is a drawback that the rotation amounts of c and c' are different, and as a result, the throttle valve openings are not the same at all openings.

<Purpose> The purpose of the present invention is to provide a symmetrical multiple carburetor in which the opening degree of each throttle valve is the same at all opening degrees, and which has good durability. <Configuration of the invention> The above purpose The configuration of the present invention is that in a symmetrical multiple carburetor that simultaneously operates each throttle valve of two symmetrically arranged carburetors, the operating lever 6 of one throttle valve and the carburetor 1 and 1' or a wire drum 5 rotatably attached to a mounting member 9 combined with the carburetor. 17 They are connected by a connecting member 16 arranged so that the lengths N and N' of perpendicular lines drawn from the center are equal, so that the rotation of the throttle valve shaft 3 and the wire drum 5 is the same, and the other throttle valve shaft 3 ′
and the wire drum 5 so that the lengths M and M' of perpendicular lines drawn from the center of the throttle valve shaft 3' and the center of the support shaft 17 of the wire drum are equal to the axis 13, and the axis 13 The present invention is characterized in that it comprises a rod 8 provided with a means A that is movable only in the direction, and the wire drum 5 and the other throttle valve shaft 3' are connected to the rod 8 via links 7 and 7', respectively. .

<Embodiment> An embodiment of the present invention will be described below based on FIGS. , 1' are air intake passages; 3 and 3' are throttle valve shafts that penetrate through the respective air supply passages 2 and 2' and are rotatably supported on the respective side walls;
Reference numerals 4 and 4' designate throttle valves fixed to each throttle valve shaft 3 and 3'.

One of the throttle valve shafts 3, 3', for example, the throttle valve shaft 3 on the right side of the drawing, and a part of the main body of the carburetor 1, 1' or a mounting member 9 combined with the carburetor 1, 1' are rotatably mounted. The attached wire drum 5 is connected by a connecting member 16. This connecting member 1
6 is arranged so that the lengths N and N' of perpendicular lines drawn from the center of the throttle valve shaft 3 and the center of the support shaft 17 of the wire drum 5 are equal to the axis 18, and the throttle valve shaft 3 and the wire drum The rotations of 5 are the same.

The connecting member 16 is provided with an adjustment mechanism for synchronizing the opening degree of the throttle valve. This adjustment mechanism can have various conventionally known configurations, and generally, the engagement pin 15 of the operating lever 6 attached to the throttle valve shaft 3 is held between a spring and an adjustment screw (not shown), and the adjustment mechanism The actuation lever 6 may be rotated by the rotation of.

An operating lever 6' fixed to the outer end of the other throttle valve shaft 3' and a lever portion 19 provided on the wire drum 5 are connected by a rod 8 via links 7', 7. This rod 8 has its axis 13
The lengths M, M of perpendicular lines drawn from the center of the other throttle valve shaft 3' and the center of the support shaft 17 of the wire drum 5.
A means A is provided which is arranged so that the two parts are equal to each other and which allows movement only in this axial direction.

To explain an embodiment of the means A, a vaporizer 1,
A guide tube 10 is fixed to a part of the rod 1' or the mounting member 9, and the rod 8 is slidably accommodated in the guide tube 10. In another embodiment, fixed shafts 12 fitted with rotating bodies 11 may be installed on both sides of the interlocking rod 8, as shown in FIG. Further, the means A may have another structure as long as it allows movement of the rod 8 only in the direction of the axis 13.

According to the present invention configured as described above, when the wire drum 5 is rotated counterclockwise in the figure, the throttle valve shaft 3 of the carburetor 1 is rotated in the same direction via the connecting member 16, and the throttle valve 4 is rotated in the same direction. open. At the same time link 7
The rod 8 connects to the guide tube 10 or the rotating body 11 via
The throttle valve 4' is moved to the right in the figure while being supported by the carburetor 1', and the throttle valve shaft 3' of the carburetor 1' is turned clockwise via the link 7' to open the throttle valve 4'. Therefore, both carburetors 1,
The throttle valves 4, 4' of 1' can be opened and closed simultaneously.

In this case, the lengths N and N' of perpendicular lines drawn from the center of the throttle valve shaft 3 and the center of the support shaft 17 of the wire drum 5 are equal to the axis 18 of the connecting member 16, so that 3 and the wire drum 5 have the same rotation.

Further, the lengths M and M' of perpendicular lines drawn from the center of the throttle valve shaft 3' and the center of the support shaft 17 of the wire drum 5 are equal to the axis 13 of the rod 8, and these lengths M and M' are equal to each other. Since it does not change depending on the valve opening degree, the rotation of the throttle valve shaft 3' and the wire drum 5 is also the same. Therefore, both throttle valve shafts 3,
3' rotates the same, and the throttle valve openings of both carburetors 1 and 1' match at all openings.

<Effects of the invention> As described above, according to the invention, there is no phase difference in the rotation angles of the throttle valves of the plurality of symmetrically arranged carburetors, so the throttle valve opening is constant at all openings. Match.

In addition, since the link mechanism uses interlocking rods,
This also eliminates the disadvantages of wires, belts, etc., where they develop nozzles and the like when used for a long period of time, causing the synchronization of each carburetor to go out of sync.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention;
The figure is a side view showing another embodiment of the present invention, and FIGS. 3 and 4 are side views showing main parts of the conventional example. 1, 1'... Carburetor, 2, 2'... Intake path, 3,
3'...throttle valve shaft, 5...wire drum, 7,
7'... Link, 8... Rod, 16... Connecting member.

Claims (1)

[Claims for Utility Model Registration] (1) In a symmetrical multiple carburetor that simultaneously operates each throttle valve of two symmetrically arranged carburetors, the operating lever 6 of one throttle valve and the carburetor 1, 1' or a wire drum 5 rotatably attached to a mounting member 9 combined with the carburetor. They are connected by a connecting member 16 arranged so that the lengths N and N' of the drawn perpendicular lines are equal, and the rotation of the throttle valve shaft 3 and the wire drum 5 is the same, and the rotation of the other throttle valve shaft 3' and Between the wire drum 5,
Means A is disposed so that the lengths M and M' of perpendicular lines drawn from the center of the throttle valve shaft 3' and the center of the support shaft 17 of the wire drum are equal to the axis 13, and are movable only in the direction of the axis 13. A symmetrical multiple carburetor comprising a rod 8, to which the wire drum 5 and the other throttle valve shaft 3' are connected via links 7 and 7', respectively. (2) The symmetrical multiple carburetor according to claim 1, wherein the connecting member 16 is provided with an adjustment mechanism for synchronizing each throttle valve 4, 4'.