JP2548912Y2 - Intake control valve - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake control valve, and more particularly to an intake control valve which does not transmit a thrust load of a shaft to a connection between a lever and an actuator rod.

[0002]

2. Description of the Related Art Generally, there is a conventional intake control valve as shown in FIG. In FIG. 7, the body 21 has a port 23,
A shaft hole 22 that opens to the outside of the body 21 in a state of crossing the shaft 21 is provided.
4 is rotatably inserted.

The shaft 24 located inside the port 23
Is a flat surface, and the valve 31 is fixed with screws or the like. FIG. 7 shows a fully opened state of the valve 31. When the valve 31 is fully opened, the port 23 is opened to the maximum, and when the valve 31 is fully closed, the port 23 is closed. I have.

[0004] One end of a shaft 24 inserted into the body 21 protrudes outside the body 21 and has a shaft hole 2.
The spacer 25 having a diameter larger than 2 is inserted,
It is fixed to one end of the lever 27. The other end of the lever 27 is connected to an actuator rod 30 via a grommet 32.
And one end of a link pin 28 rotatably inserted is fixed to the lower end of the link pin 28. The other end of the link pin 28 is an E-ring 29
Is fitted, and the actuator rod 30 is
8 is prevented from moving in the axial direction.

With the above structure, when the actuator rod 30 operates and moves to one side, the link pin 2
8, the lever 27 rotates, and with this rotation of the lever 27, the shaft 24 rotates integrally with the lever 27, and the valve 31 opens or closes. , The fluid flow in the port 23 can be controlled.

As described above, the thrust of the shaft 24 is applied when the actuator rod 30 is operated or in operation, and the thrust is received by the spacer 25. With reference to the contact surface between the spacer 21 and the spacer 25 as a reference B, the thrust in the body direction is such that the lever 27 fixed to one end of the shaft 24 is locked to the body 21 via the spacer 25. The play due to the movement of the shaft 24 could be prevented.

However, during actual operation, particularly when the vibration conditions are severe, the thrust of the shaft 24 is also generated in the direction outside the body with reference to B, so that the play of the shaft 24 generated at this time is necessarily limited. I couldn't do that.

Therefore, the thrust toward the outside of the body with reference to B is caused by the lever 27 and the actuator rod 30.
, The link pin 28, the grommet 3
2. Loads are directly applied to parts such as the E-ring 29, and the parts constituting these connecting parts are worn out,
Or, there is a problem in durability performance such as a possibility of being damaged or shortening the service life remarkably.

This invention solves the above-mentioned problems, and prevents the load generated by the thrust of the shaft 24 from being directly applied to the connecting portion between the lever 27 and the actuator rod 30, thereby improving the durability of the intake control valve. The purpose is to provide.

[0010]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention is applied to a body having a port,
A shaft having one end protruding outside the body penetrating through the port is rotatably provided, a valve is provided in a portion of the shaft located in the port, and a guide portion is provided in a portion protruding outside the body. One end of the lever is fixedly inserted into the projecting end of the shaft through the integrally formed spacer, and the guide of the spacer is inserted into the guide insertion hole formed in the other end. A means for connecting an actuator rod to the portion is employed.

[0011]

According to the present invention, the lever is rotated by the operation of the actuator rod, and the shaft fixed to the center of rotation of the lever is rotated. The valve will open or close. And the operating direction of the actuator rod,
That is, whether to open or close the valve is determined according to the direction of the emergence.

When the actuator rod is operated or when the shaft is moved in the thrust direction during the actual operation, the lever moves together. In this case, since the spacer and the lever connected to the actuator rod are allowed to move in the thrust direction, the guide portion insertion hole of the lever moves along the guide portion of the spacer, and the load in the thrust direction is increased. Is not transmitted to the connection between the actuator rod and the lever.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partial sectional view illustrating an embodiment of the present invention. In FIG. 1, a body 1 has a port 3
A shaft hole 2 is provided which is open to the side of the body 1 across the port 3.
The shaft 4 is rotatably inserted through the shaft 4.

A portion of the shaft 4 located inside the port 3 is provided with a flat surface, and a valve 11 is fixed to this portion with a screw or the like. When the valve 11 is fully open,
As shown in FIG. 5, the port 3 is in a state of being opened to the maximum, and is formed so as to close the port 3 (not shown) when fully closed.

One end of the shaft 4 protrudes out of the body 1, a spacer 5 is inserted through this protruding portion, and a lever 7 is fixed. The spacer 5 inserted into one end of the shaft 4 is, as shown in FIGS.
A shaft insertion hole 5a is formed at one end, and a guide portion 6 is provided upright at the other end. The guide portion 6 projects in a columnar shape at a height greater than the plate thickness of the lever 7, and is formed integrally with the spacer 5. In addition, a link pin insertion hole 5b is formed in the guide portion 6 so that its center line is aligned, and penetrates through the spacer 5. Then, the opposite surface on which the guide portion 6 is erected is cut off at a required thickness to make it thinner, and an E-ring 9 fitted to one end of a link pin 8 described later is locked.

As shown in FIGS. 5 and 6, the lever 7 fixed to the protruding end of the shaft 4 is provided with a shaft insertion hole 7a at one end so that the lever 7 can be fixed to the protruding end of the shaft 4. A guide portion insertion hole 7b is formed at the other end with an inner diameter larger than the outer diameter of the guide portion 6 of the spacer 5.

Here, a shaft insertion hole 5a of a spacer 5 is inserted into the shaft 4, and an end of the shaft 4 is
One end of the lever 7 is fixed in a state where the guide portion 6 of the spacer 5 is inserted through the guide portion insertion hole 7b provided at the other end. After that, the link pin insertion hole 5b provided in the guide portion 6 of the spacer 5 is fixed. The link pin 8 is inserted.

The link pin 8 has a diameter larger than that of the link pin 8 and is engaged with the guide portion 6, and the lower end of the actuator rod 10 is attached to this end. An E-ring 9 is fitted to the end having the smaller diameter, thereby preventing the shaft 4 from moving in the axial direction with respect to the guide portion 6 of the spacer 5.

Next, the operation of the embodiment having the above configuration will be described. FIG. 1 shows a fully opened state of the valve 11, and FIG. 2 shows a positional relationship among the shaft 4, the lever 7, and the actuator rod 10 in the state of FIG. When operating the valve 11 from the state of FIG. 1, an actuator (not shown) is operated to move the actuator rod 10 to one side. Accordingly, the lever 7 rotates together with the spacer 5 via the link pin 8, and the valve 1
1 rotates.

In the operation of the valve, the movement of the actuator rod 10 caused by the protrusion / retreat is transmitted to the spacer 5 via the link pin 8. At this time, since the link between the link pin 8 and the link pin insertion hole 5b of the spacer 5 and the shaft 4 and the shaft insertion hole 5a of the spacer 5 are not fixed, when the actuator rod 10 moves to one side, The spacer 5 rotates around the shaft 4 via the link pin 8. At the same time, with the movement of the actuator rod 10, the link pin 8 operates to rotate the lever 7 via the guide portion 6 of the spacer 5.

At this time, the link pin 8 is engaged with the guide portion insertion hole 7b of the lever 7 via the guide portion 6 of the spacer 5, and the protruding end of the shaft 4 has one end of the lever 7 fixed thereto. Therefore, when the actuator rod 10 moves to one side, the lever 7 rotates integrally with the spacer 5 about the shaft 4 and the shaft 4 fixed to the lever 7 also rotates integrally. .

The rotation of the shaft 4 causes the valve 1
1 rotates to open or close the valve. The operation of opening or closing the valve is determined by the direction in which the actuator rod 10 is retracted.

When the valve 11 is operated as described above, or when the shaft 4 moves in the thrust direction during the actual operation, the lever 7 moves integrally. In this case, since the spacer 5 and the lever 7 connected to the actuator rod are allowed to move in the thrust direction, the guide portion insertion hole 7b of the lever 7 is provided.
Moves along the guide portion 6 of the spacer 5 so that the load in the thrust direction of the shaft is not transmitted to the connection portion between the actuator rod 10 and the lever 7.

Further, since the movement of the thrust toward the body with reference to the contact surface between the body 1 and the spacer 5 as reference A is restricted by the engagement of the lever 7 with the spacer 5, the load due to the thrust is reduced by the actuator rod. The power is not transmitted to the connection between the lever 10 and the lever 7.

[0025]

As described above, according to the present invention, the spacer and the lever are allowed to move in the thrust direction of the shaft. Therefore, even if the shaft moves in the thrust direction, the lever and the actuator can be moved. The load is not transmitted directly to the connecting portion with the rod. Therefore, it is possible to prevent wear and breakage of components used in the connecting portion, and to improve durability.

[Brief description of the drawings]

FIG. 1 is a partial sectional view illustrating an embodiment of the present invention.

FIG. 2 is a diagram showing a positional relationship among a shaft, an actuator rod, and a lever in FIG. 1;

FIG. 3 is a view showing a spacer of the intake control valve according to the present invention;

FIG. 4 is a sectional view taken along a center line in FIG. 3;

FIG. 5 is a diagram showing a lever of the intake control valve according to the present invention.

FIG. 6 is a sectional view taken along a center line in FIG. 5;

FIG. 7 is a partial sectional view showing a conventional example.

[Explanation of symbols]

 1, 21 Body 2, 22 Shaft hole 3, 23 Port 4, 24 Shaft 5, 25 Spacer 5a Shaft insertion hole 5b Link pin insertion hole 6 Guide part 7 , 27 Lever 7a Shaft insertion hole 7b Guide insertion hole 8, 28 Link pin 9, 29 E-ring 10, 30 Actuator rod 11, 31 Valve 32 Grommet

Claims (1)

(57) [Scope of request for utility model registration] 1. A body (1) having a port (3),
A shaft (4) having one end protruding out of the body (1) penetrating the port (3) is rotatably provided, and a portion of the shaft (4) located in the port (3) is provided with a valve ( 11), a spacer (5) integrally formed with a guide portion (6) is inserted into a portion of the body (1) protruding outside, and the protruding end of the shaft (4) is inserted into the protruding end of the shaft (4). One end of the lever is fixed while the guide portion (6) of the spacer (5) is inserted into the guide portion insertion hole (7b) formed at the other end, and the actuator rod (6) is attached to the guide portion (6) of the spacer (5). 10) An intake control valve, wherein the intake control valve is connected.