JPH0643476Y2 - Connection tuning device for multiple vaporizers - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a vaporizer for controlling the concentration and amount of an air-fuel mixture supplied to an engine. Each vaporizer has a plurality of vaporizers arranged in its interior. The present invention relates to a multiple carburetor connection tuning device for synchronously connecting valves for opening and closing an intake passage of a carburetor and maintaining the same opening.

[Conventional technology]

For example, a conventional connection tuning device for a multiple vaporizer is disclosed in Japanese Utility Model Publication No. Sho 61-332.
No. 32, etc.

This is a connection tuning rod that connects a first throttle valve lever fixed to the first throttle valve shaft of the first vaporizer and a throttle valve tuning lever arranged to be loosely fitted to the second throttle valve shaft of the second vaporizer. And a second throttle valve lever that is fixed to the second throttle valve shaft of the second carburetor is integrally screwed with a screw.

[Problems to be solved by the device]

The conventional linked tuning device for a multiple vaporizer has the following problems.

It is necessary to prepare a new throttle valve tuning lever in addition to the throttle valve lever that is integrally attached to the protruding end of the throttle valve shaft of each carburetor. However, this is not preferable because it results in high cost.

Since it is necessary to form a screw hole for screwing a screw in the throttle valve tuning lever, the number of processing steps increases and the cost of the product increases, which is not preferable.

As a connection tuning device, work to assemble the throttle valve tuning lever while loosely fitted to the throttle valve shaft, and work to screw the throttle valve lever and the throttle valve tuning lever with screws after synchronizing the throttle valve. However, the number of assembling steps is increased and the cost of the product is increased, which is not preferable.

[Means for solving the problem]

The connection tuning device of the multiple vaporizer according to the present invention is made in view of the above problems, and is intended to obtain the connection tuning device having a low product cost. It is what

A plurality of carburetors each having a carburetor main body having an intake passage penetrating the inside thereof; a valve shaft pivotally supported by the carburetor main body and having a valve attached to control opening and closing of the intake tract; In a multiple carburetor in which the levers of each carburetor that are integrally arranged at the end of the valve shaft protruding from the carburetor body are connected by a connecting member, the connecting member is attached to the lever of each carburetor. The lever mounting portion and the transmission portion connecting the lever mounting portion and the lever mounting portion facing each other are formed, and the transmission portion is formed of two parallel metal materials having a parallel gap h, and the transmission portion. An enlarged portion having a gap H larger than the parallel gap h is provided at a substantially middle portion of the above.

[Action]

By attaching each lever mounting portion of the connecting member to the lever of each carburetor, the valves of each carburetor are synchronously connected, and by adjusting the gap H of the enlarged portion of the transmission portion of the connecting member, each carburetor. The valve opening is synchronized.

〔Example〕

An embodiment of a connection tuning device for a multiple vaporizer according to the present invention will be described below with reference to FIGS. 1, 2, and 3.

Reference numeral 1 denotes a carburetor body having an intake passage 2 penetrating horizontally in the inside thereof, and a floating chamber 4 is formed by a lower concave portion 1A of the carburetor main body 1 and a floating chamber main body 3 which covers the lower concave portion 1A. A liquid surface AA which is always constant is formed by a float, a float valve, and a valve seat (not shown).

A valve shaft 5 is rotatably supported by the carburetor main body 1 across the intake passage 2, and a valve 6 for opening and closing the intake passage 2 is attached to the valve shaft 5 with a screw. With vaporizer body 1
A plate-shaped lever 7 is attached to the end of the valve shaft 5 that projects further.

Then, the carburetor 8 is configured by providing a low-speed fuel system and a main fuel system (not shown), and three carburetors 8 are arranged from the upper side to the lower side in the figure to form a triple vaporizer, The first vaporizer 8 ₁ , the second vaporizer 8 ₂ and the third vaporizer 8 ₃ are arranged from above.

The above structure and configuration are known.

In order to achieve the above-mentioned object, the connection tuning device of the multiple vaporizer according to the present invention is as follows.

That is, 7A is a hole formed in the lever 7, and this hole
The hole position of 7A with respect to the center C of the valve shaft 5 is the same in each lever 7 ₁ , 7 ₂ and 7 ₃ of the first vaporizer 8 ₁ , the second vaporizer 8 ₂ and the third vaporizer 8 _3. is there.

Reference numeral 9 denotes a connecting member, which includes a lever mounting portion 10 and a transmission portion 11.

The lever mounting portion 10 includes a first vaporizer 8 ₁ , a second vaporizer 8 ₂ and a third vaporizer 8.
Each lever ₇₁ of the vaporizer 8 _3, 7 _2, 7 ₃ of each lever to be rotatably inserted into the hole 7A 7 _1, 7 _2, 7 ₃ to those provided in correspondence, each lever mounted Lever 7 for parts 10 ₁ , 10 ₂ and 10 ₃
The shaft portion 10A having a diameter smaller than the diameter of the hole 7A is provided so as to project, and the slit groove 10C is provided from the outer end 10B of the shaft portion 10A toward the base portion F of the shaft portion 10A. Incidentally, 10D is a locking collar portion provided near the outer end 10B of the shaft portion 10A which penetrates the hole 7A and projects to the other surface of the lever 7, and the outer diameter of the locking collar portion 10D is the hole 7A. The diameter of the lever mounting portion 10 is larger than that of the above, and the lever mounting portion 10 is preferably made of a synthetic resin material. (However, the material is not limited to the synthetic resin material.) The above is clearly shown in FIG.

Transfer unit 11, together intended for connecting the opposing lever mounting portion 10, the insertion lever mounting portion 10 ₁ which is inserted into the lever 7 of the _first vaporizer ₈₁ and the lever 7 of the _second vaporizer 8 ₂ The lever mounting portion 10 ₂ to be connected by the transmission portion 11 ₁ ,
A mounting portion ₁₀₃ which is inserted a lever mounting portion 10 ₂ which is inserted into the lever 7 ₂ vaporizer 8 ₂ and the third vaporizer 8 ₃ of the lever 7 ₃ are connected by the transmission unit 11 _2.

This transmission part 11 includes two metal wires KL having a parallel gap h.
The lever mounting part consists of
Stick to 10. That is, one end of the transmission part 11 ₁ is fixed to the lever mounting part 10 ₁ , the other end is fixed to the lever mounting part 10 ₂ , and one end of the transmission part 11 ₂ is fixed to the lever mounting part 10 ₂ and the other end is fixed. It is secured to the lever mounting portion 10 _3.

When the lever mounting portion 10 is made of a synthetic resin material, both ends of the transmission portion 11 are integrally molded with the lever mounting portion 10.

Further, an enlarged portion 11A having a gap H larger than the parallel gap h and extending outward is provided at a substantially middle portion of the transmission portion 11.

Thus, in the connecting member 9, the lever attaching portion 10 ₁ and the lever attaching portion 10 ₂ are connected by the transmitting portion 11 ₁ , and the lever attaching portion 10 ₁ is connected.
10 ₂ and the lever mounting portion 10 ₃ are connected by the transmission portion 11 ₂ .

Then the first vaporizer _81, second vaporizer 8 _2, explaining the attachment of the coupling member 9 to the third levers ₇₁ of the vaporizer 8 _3, 7 _2, 7 _3, each carburetor _81, In the holes 7A of the levers 7 ₁ , 7, ₂ and 7 ₃ of the levers 8 ₂ and 8 ₃ respectively, the lever mounting portions 10 ₁ and 10 corresponding to the holes 7A are provided.
Insert the ₂ and 10 ₃ shafts 10A.

At this time, the outer end 10B of the shaft 10A is inserted from one end of the hole 7A (the right end surface of the lever 7 in FIG. 3), but a slit groove 10C is formed from the outer end 10B toward the base F of the shaft 10A. Since it is drilled, the outer diameter of the locking collar portion 10D contracts, whereby the shaft portion 10A enters into the hole 7A. When the locking collar 10D projects from the other end of the hole 7A (the left end surface of the lever 7 in FIG. 3), the pressing by the hole 7A on the locking collar 10D is released, so that the outer diameter of the locking collar 10D. Returns to its original state.

Therefore, the shaft 10A does not come out of the hole 7A, and the hole 7A
Will be rotatably supported.

As described above, the connecting member 9 is attached to each of the vaporizers 8 ₁ , 8 ₂ and 8 ₃ that form the multiple vaporizer.

However, in such a state, the angles of the valves 6 ₁ , 6 ₂ and 6 ₃ of the vaporizers 8 ₁ , 8 ₂ and 8 ₃ are synchronized (the opening of each valve is the same).
It has not been. If there is an error in the mounting pitch of the carburetor and the carburetor, there are variations in the longitudinal dimension of the transmission parts 12 ₁ , 11 ₂ and the holes 7A of the levers 7 ₁ , 7 ₂ , 7 ₃ This is due to variations in the hole diameter.

Next, the adjustment for tuning the valves 7 ₁ , 7 ₂ and 7 ₃ of the vaporizers 8 ₁ , 8 ₂ and 8 ₃ will be described.

When the lever 7 is rotated clockwise in FIG. 1 in a state where the valves are not synchronized, the vaporizers 8 ₁ , 8 ₂ ,
The valves 7 in 8 ₃ block the intake passages 2 respectively,
At this time, the valve 7 of at least one carburetor among the carburetors forming the multiple carburetor completely closes the intake passage 2.

More specifically, for example, the valve 6 of the _second vaporizer 8 ₂
Is fully closed, the valve 6 of the first carburetor 8 ₁ is open 5 degrees before full close, and the valve 6 of the third carburetor 8 ₃ is open 3 degrees before full close. adjust.

First, the second vaporizer 8 _second valve 6 is held in a fully closed state, the connection member 9 of the enlarged portion 11A to rotate, for example, by inserting a screwdriver into the gap H transfer portion 11 ₁ of the enlarged portion 11A The gap H is further increased. According to this, the connection length J ₁ between the _first vaporizer 8 ₁ and the second vaporizer 8 ₂ of the transmission portion 11 ₁ is shortened, and according to this, the lever 7 _{1 of the first} vaporizer 8 ₁ is Rotates clockwise, which causes the valve 6 of the _first vaporizer 8 ₁ to rotate.
Can be fully closed.

Further, in the third vaporizer 8 ₃ , the valve 6 of the second vaporizer 8 ₂ is held in a fully closed state, and the outside of the enlarged portion 11A of the transmission portion 11 ₂ of the connecting member 9 is, for example, a plunger. The gap H of the crushed enlarged portion 11A is reduced. Coupling length J ₂ According to the transmission section 11 and the second vaporizer 8 _{2 2} and third vaporizer 8 ₃ intended to be longer, the third vaporizer 8 ₃ of the lever 7 ₃ According to this Rotates clockwise, which causes the third vaporizer to
The valve 6 of 8 ₃ can be fully closed. The amount of increase or decrease in the gap H of the enlarged portion 11A depends on the opening state of each valve.

As described above, the valves of all the carburetors forming the multiple vaporizer can be synchronized with the fully closed state with the same opening degree.

Although the triple vaporizer has been described in the present embodiment, it can be applied to any multiple vaporizer, and the valve can be applied to any of a choke valve and a throttle valve.

Further, although a metal wire is used for the transmission portion, a metal plate may be used. Furthermore, the lever mounting portion is only required to be rotatably mounted on the lever and is not limited to the embodiment.

[Effect of device]

According to the connection tuning device of the multiple vaporizer according to the present invention, the following effects can be obtained.

Since only the connecting member is required as the member for performing the connection tuning, the number of parts can be reduced, and according to this, the product cost can be reduced.

The synchronizing work can be performed simply by increasing or decreasing the gap of the enlarged part of the transmission part of the connecting member or by working according to the valve opening degree, and screw tightening work is not required, and work efficiency is improved. I was able to do it.

Since the connecting work only needs to attach the lever mounting portion of the connecting member to the lever, the connecting work is extremely simple.

When the transmission part is formed of a metal plate, a load can be applied to the wide part by a minus driver, pliers, etc. when increasing or decreasing the gap of the enlarged part, so that work efficiency can be improved. .

[Brief description of drawings]

1 is a front view, FIG. 2 is a left side view of FIG. 1, and FIG. 3 is FIG. 1 III. FIG. 6 is a cross-sectional view of a main part of a lever and a connecting member taken along line III-III. 1 ... Vaporizer main body, 2 ... Intake passage 6 ... Valve, 7 ... Lever 7A ... Hole, 9 ... Connecting member 10 ... Lever mounting part, 10A ... Shaft part 11 ... Transmission part, 11A ...... Expansion section

Claims (3)

[Scope of utility model registration request] 1. A carburetor comprising: a carburetor main body having an intake passage extending therethrough; and a valve shaft rotatably supported by the carburetor main body and having a valve attached to control opening and closing of the intake passage. In a multiple carburetor in which a plurality of carburetors, which are integrally arranged at the end of the valve shaft protruding from the carburetor body, are connected by a connecting member, connect the connecting member to the lever of each carburetor. The lever mounting portion for attachment and the transmission portion connecting the lever mounting portion and the lever mounting portion facing each other are formed, and the transmission portion is formed of two parallel metal materials having a parallel gap h. In addition, a connecting and tuning device for a multiple vaporizer, in which an enlarged portion having a gap H larger than the parallel gap h is provided substantially in the middle of the transmission portion. 2. The connection tuning device for a multiple vaporizer according to claim 1, wherein the transmission part is a metal wire. 3. The connection tuning device for a multiple vaporizer according to claim 1, wherein the transmission part is a metal plate.