JPH0515550Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an intake control valve, and in particular, an intake control valve that can reduce resistance to fluid flow in a flow path and smooth the fluid flow. It concerns valves.

[Prior art]

In general, an intake control valve has a large diameter port 2 as shown in FIGS. 10 to 13.
A small-diameter port 27 is connected to the port 6 at an acute angle, and after they merge, the product is discharged.

A shaft 28 is disposed to penetrate inside the large diameter port 26, and a flat plate valve 29 is attached to the shaft 28 inside the large diameter port 26. A lever 30 is attached to a portion 28a located outside the large diameter port 26 of 28, and an actuator 31 is attached to this lever 30.
An operating rod 31a is attached, and when the actuator 31 is actuated, the shaft 28 and the valve 2 attached thereto are operated via the lever 30.
9 rotate together to open and close the large diameter port 26.

In this case, the state in which the shaft 28 and the valve 29 are attached is such that the portion of the shaft 28 located inside the large diameter port 26 is shaved to have a D-shaped cross section, and a flat head screw 32 or the like is inserted into the flat portion. Now valve 29 can be installed.

[Problem that the invention attempts to solve]

Therefore, since the valve 29 is attached to the shaft 28 inside the large-diameter port 26 using a pan head machine screw 32, the valve 29 is installed relatively close to the inlet of the large-diameter port 26 due to restrictions when tightening the screw. It was necessary to attach the shaft 28, and the attachment angle θ of the valve 29 could not be made very large due to restrictions on the tightening direction of the pan head machine screw 32.

As a result, the position of the valve 29 cannot be optimally positioned relative to the fluid flow within the port.
When the valve 9 is fully closed, a large separation area A occurs, which poses a problem of resistance to flow.

In addition, when the valve 29 is fully open, the angular shape of the valve 29 itself, the shaft 28 and the valve 29
The problem is that the level difference between the fluid and the fluid prevents smooth flow and creates flow resistance, making it impossible to obtain a smooth fluid flow.

This invention solves the problems of the conventional ones as described above, and provides an intake control valve that can simplify the installation of the valve and smooth the flow of fluid inside the port. With the goal.

[Means for solving problems]

In order to solve the above problems, this invention consists of a body that is installed on the input side of the engine and has a large diameter straight port connected to a small diameter port at an acute angle, and a body that is installed inside this body and connected to the operating member. Therefore, a valve for opening and closing the large-diameter port is provided, and when the valve is opened, fluid is supplied through the large-diameter port and the small-diameter port, and when the valve is closed, fluid is supplied through the small-diameter port only. The intake control valve is provided with a support part in a part where a large diameter port and a small diameter port are connected, and a tip part of the support part protrudes into the port, and the wall thickness of the valve is Shafts each having a diameter smaller than that of the valve are rotatably disposed, one shaft is connected to an actuating member, fitting portions are formed at two opposing sides of the valve, and the valve side of both shafts is connected to the actuating member. An engaging part that can be fitted into the fitting part of the valve is formed at the tip of the valve, and an engaging part of the shaft is fitted into the fitting part of the valve, so that the valve is rotated as a unit around the shaft. This model employs an intake control valve that is characterized by the ability to

[Effect]

By adopting the above-mentioned means, this invention provides a support part at the connecting part between the large diameter port and the small diameter port, provides a hole in the support part, and fixes the valve by fitting the shaft divided from both sides. This simplifies the installation of the valve, and furthermore, by locating the valve inside the port in a position where the cross-sectional shape of the port does not change much when it is fully closed, resistance when fluid flows is reduced. Furthermore, even when the valve is fully open, the cross-sectional shape of the valve is streamlined, so the fluid flows smoothly.

〔Example〕

This embodiment will be described below with reference to the drawings.

Fig. 1 shows a front view of the intake control valve according to this invention, and Fig. 2 shows a view from the large-diameter port opening side. A large diameter port 1 and a small diameter port 2 of a body 3 have a small diameter port 2 connected to the body 3 at an acute angle.
There are two shafts 4 of different lengths in the connection part with
Support parts 5a and 5b are formed for the shafts 5a and 4b, and holes 11a and 11b pass through the support parts 5a and 5b, and shafts 4a and 4b are inserted into the holes 11a and 11b from both sides, respectively. It looks like it will be supported.

The shafts 4a and 4b are shown in FIGS. 3a and 3.
As shown in FIG. b, its diameter is smaller than the wall thickness of the bulb 6, and its tip 21
a, 21b are narrow so as to match the fitting portions 7a, 7b provided in the valve 6, and are bifurcated and made to have elasticity. As shown in FIG. 2, the engaging portion 22a is slightly wider than the fitting portions 7a, 7b of the valve 6, and rises obliquely.
22b is formed.

The shafts 4a, 4b are applied to the fitting parts 7a, 7b of the valve 6 from both sides, and the wide part of the tip part 21a rebounds due to the elasticity of the tip part 21a, and while sliding into the fitting parts 7a, 7b of FIG. The end portions 21a, 21b of the shaft are inserted into the spaces 20a, 20b of the valve.

At this time, as the pressure on the engaging parts 22a, 22b is released, a part of the engaging parts 22a, 22b is caught in the spaces 20a, 20b, so the engaging parts 22a,
22b acts as a stopper and the valve 6 is fixed.

Note that the valve 6 has a streamlined cross section.

After the shaft 4b is inserted and installed, the hole 11b of the support portion 5b is kept sealed with a plug 14.

Also, the support portion 5a into which the shaft 4a is inserted
A seal 15 is sealed and held in the opening 11a of the shaft 4a, and the shaft 4a extends outward from the support portion 5a and is fixed to one end of the lever 9, and the other end of the lever 9 is connected to the actuator via the pin 17. It is rotatably fixed to the tip of the operating rod 8a from 8.

By configuring as described above, the valve 6 can be installed at an optimal position inside the large-diameter port 1, thereby reducing resistance to fluid flow from the small-diameter port 2. can be significantly reduced. That is, as shown in FIG. 6, the flow state when the valve 6 is fully closed is as follows:
Since the diameter of the valve 6 is smaller than the wall thickness of the valve 6, there is nothing protruding from the surface of the valve 6, so that the flow becomes smooth and the resistance to the fluid is significantly reduced.

Further, when the valve 6 is fully closed, the cross-sectional shape of the valve 6 itself is a streamlined shape, so that the fluid flows smoothly.

Further, FIGS. 8 and 9 show other embodiments of this invention, in which projections 24a and 24b on the shaft side are inserted into the valve side as shown in FIGS. 7a and 7b. When moving, the main body protrusions 23a, 23b of the shafts 4a, 4b expand with elasticity to form the protrusions 24a, 24.
b is the fitting part 25 on the valve side that advances while sliding.
a, 25b, and at this time the protrusions 24a, 24b
When the pressure is released, the engaging portions 26a, 2
6b is caught on the fitting part 25a, so the engaging part 2
6a and 26b act as stoppers to close the valve 6.
are fixed to the shafts 4a and 4b,
As in the previous embodiment, the shafts 4a and 4b have a smaller diameter than the wall thickness of the valve 6, so that they do not get in the way of the fluid flowing on the surface of the valve 6, making the flow smoother and reducing resistance to the fluid. significantly reduced.

[Effect of idea]

This device is constructed as described above, so that it is easy to fix the valve to the shaft inside the port, and since the valve can be attached inward, resistance to the flow of fluid can be greatly reduced, making the flow smoother without creating resistance to the fluid when the valve is fully open or fully closed. Furthermore, since the diameter of the shaft is smaller than the thickness of the valve, there are no protruding parts on the valve surface that interfere with the flow, ensuring a smooth flow of fluid.

[Brief explanation of drawings]

Figure 1 is a front view showing the intake control valve of this invention, Figure 2 is a diagram showing the intake control valve of this invention seen from the port opening side, and Figure 3a is a diagram of the relationship between the valve and shaft of this embodiment. 3b is a front view, FIG. 4 is a sectional view taken along line A-A in FIG. 3a, and FIG. 5 is a section B in FIG. FIG. 6 is a diagram showing the state of fluid flow when the valve is fully closed, FIG. 7a is a plan view showing the valve and shaft of another embodiment, FIG. 7b is a front view, and FIG. 7a is a sectional view taken along the line C-C in FIG. 7a, FIG. 9 is an enlarged view of the tip portion of another embodiment, and FIG. 9 is a front view showing a conventional intake control valve. , Figure 11 is a diagram showing the shaft, Figure 12 is a diagram showing the shaft.
The figure shows the valve, and FIG. 13 shows the state of fluid flow when the valve is fully closed. 1, 26...Large diameter port, 2, 27...Small diameter port, 3...Body, 4a, 4b, 28...
Shaft, 5a, 5b... Support part, 6, 29...
Valve, 7a, 7b, 25a, 25b... Fitting part, 8, 31... Actuator, 8a, 31
a... Operating rod, 9, 30... Lever, 11a, 1
1b... hole, 14... plug, 15... seal,
17...Pin, 20a, 20b...Space, 21
a, 21b... tip, 22a, 22b, 26
a, 26b... Attachment portion, 23a, 23b... Main body protrusion, 24a, 24b... Protrusion, 32... Pan head machine screw, A... Separation area, θ... Mounting angle.

Claims (1)

[Scope of utility model registration request] A body 3 is provided on the input side of the engine, and has a large diameter straight port 1 and a small diameter port 2 connected at an acute angle. a valve 6 that opens and closes; when the valve 6 is open, fluid is supplied through the large diameter port 1 and the small diameter port 2; when the valve 6 is closed, fluid is supplied only through the small diameter port 2; An intake control valve that supplies
Support portions 5a and 5b are provided at the continuous portion between the large diameter port 1 and the small diameter port 2, and the support portions 5a and 5b are provided.
the tip protrudes into the port, and
Shafts 4a and 4b each having a diameter smaller than the wall thickness of the valve 6 are rotatably arranged, one shaft 4a is connected to the actuating member 8, and shafts 4a and 4b each having a diameter smaller than the wall thickness of the valve 6 are provided. Fitting portions 7a, 7b are formed, and both shafts 4a, 4
An engaging portion that can be fitted into the fitting portions 7a and 7b of the valve 6 is formed at the tip end portion of the valve 6 on the side of the valve 6, and the fitting portions of the shafts 4a and 4b are formed in the fitting portions 7a and 7b of the valve 6, respectively. An intake control valve characterized in that the valve 6 can be rotated about the shafts 4a and 4b as a unit by fitting each other.