KR100815157B1 - Electronic control type throttle valve apparatus - Google Patents

Abstract

An electronic control type throttle valve apparatus is provided to assign degree of freedom to an installation structure by using a non-contact throttle position sensor. An electronic control type throttle valve apparatus comprises a throttle body(100) and a throttle valve shaft(300). The throttle body includes a mounting space(150) having an opening at one side thereof, an intake path(110) and a motor containing space(160). The throttle valve shaft is inserted from the mounting space to the intake path. A throttle valve(200) is coupled with the throttle valve shaft to open and close the intake path. A motor(M) is installed in the motor containing space. A power transfer section is installed in the mounting space to transfer rotational force to the throttle valve shaft. A throttle position sensor detects rotation of the throttle valve shaft. A torsion spring(400) is arranged in the mounting space while surrounding the throttle valve shaft.

Description

Electronic control type throttle valve apparatus

1 is an exploded perspective view showing an electronically controlled throttle valve device according to the prior art.

2 is a perspective view showing an electronically controlled throttle valve device according to the present invention.

3 is an exploded perspective view of FIG. 2.

4 is a perspective view illustrating an internal configuration of a cover in FIG. 2.

5 is a bottom perspective view illustrating a structure around a spring in FIG. 4.

FIG. 6 is a perspective view illustrating a structure in which a magnet is injected into a partial gear in FIG. 3.

7 is a bottom view perspective view illustrating an installation structure of the throttle position sensor in FIG. 3.

Figure 8 is a cross-sectional view showing a state in which the throttle valve is operated by the action of the throttle valve device according to an embodiment of the present invention, (a) is the lymph groove open state, (b) is fully open state, (c) is fully closed It is a state.

<Description of Major Symbols Used in Drawings>

100: Throttle Body

110: intake passage

200: throttle valve

300: throttle valve shaft

400: torsion spring

500: Throttle Position Sensor

600: stopper

700: Substrate

710: Magnet

720: terminal

740: connection of power and control device

800: lever

900 power transmission unit

1000: Throttle Valve Device

The present invention relates to a throttle valve device used in automobiles, and more particularly, to a throttle valve device having a simple structure and a free installation configuration.

In order to operate the engine, which is the heart of the car, an appropriate amount of air must be supplied with fuel injection. In general, the adjustment of air inflow into the engine during driving is adjusted by changing the opening and closing degree of the throttle valve as the driver presses the accelerator pedal.

In recent years, many electronically controlled throttle devices are available on the market, which are connected to a cable connected to the driver's accelerator. When the user presses the accelerator, the valve opens and air flows in. The open state is signaled to the electronic control unit (ECU). When sent, the electronic control unit receives this signal to control the amount of fuel proportional to the amount of air entering the engine.

Korean Patent Application No. 10-2003-0032655 (hereinafter referred to as "prior art") discloses an example of an electronically controlled throttle device, the configuration of which is briefly described with reference to FIG.

As shown, the electronically controlled throttle device according to the prior art, the throttle body 40, the throttle valve shaft 44, the throttle valve 45, the motor 46, and receives power from the motor Power transmission member 50 for rotating the throttle valve shaft for opening and closing operation of the throttle valve, lymph groove member 60 for rotating the throttle valve shaft to the lymph groove opening position of the throttle valve and the lymph groove opening position of the throttle valve It is configured to include an adjusting member for adjusting the.

The power transmission member 50 constitutes a return spring 54, and the lymph groove member 60 forms a lymph groove lever 61 and a lymph groove spring 62. Here, the "lymph groove" means an air flow path formed by opening the throttle valve at a predetermined angle so that power may be cut off or air may be introduced in an emergency.

The cover 70 is covered in the mounting space 41 on the throttle body 42.

A throttle position sensor for generating an electrical signal by detecting an angle of rotation of the throttle valve 45 during opening and closing operation of the throttle valve 45 on one side of the cover 70 corresponding to the extension line of the throttle valve shaft 44 ( 71, TPS).

In addition, a connector 72 for connecting the electrical signal generated from the throttle position sensor 71 and at the same time connected to an external power source is integrally formed at one outer side of the cover 70.

In the present invention, the power transmission member 50 is composed of a motor shaft gear 51, a partial gear 52, a reduction gear 53 and a return spring (54).

However, according to the related art, since two springs 54 and 62 are required to implement the open state, the fully closed state and the lymph groove open state, the internal structure is very complicated.

In addition, the throttle position sensor 71 according to the prior art is configured to pass through the throttle valve shaft 44 to detect the rotational amount of the throttle valve shaft 44 by contact and generate an electrical signal, so the installation configuration Constraints have been followed.

The present invention has been made to solve the above problems, an object of the present invention is to simplify the internal structure and assembly structure by performing the lymph groove opening structure and opening and closing function with one restoring spring, the electronically controlled throttle valve device To provide.

It is also an object of the present invention to provide an electronically controlled throttle valve device that can provide a degree of freedom to the installation structure by adopting a non-contact throttle position sensor.

In order to achieve the object as described above, the electronically controlled throttle valve device of the present invention, the throttle body is formed with a mounting space, the intake passage and the motor storage space is opened on one side;

A throttle valve shaft inserted across the intake passage from the mounting space and rotatably installed in a left and right direction;

A throttle valve coupled to the throttle valve shaft in the intake passage to open and close the intake passage;

A motor installed inside the motor storage space;

A power transmission member installed in the mounting space to receive the power generated from the motor and transmit rotational force to the throttle valve shaft;

A throttle position sensor for detecting an amount of rotation of the throttle valve shaft;

Power and control connections;

A coil type torsion spring arranged to surround the throttle valve shaft in the mounting space;

A lever freely installed in the mounting space and caught on an upper end of the torsion spring; And

A cover covering a mounting space of the throttle body,

The power transmission member includes a partial gear fixed to the throttle valve shaft, the engaging piece is formed on the lower end of the torsion spring is formed around the partial gear, it characterized in that the projecting piece is formed on the lever .

Here, the torsion spring is characterized in that the diameter of the upper end is smaller than the diameter of the lower end.

In addition, the mounting space is characterized in that the stopper protruding to limit the movement of the engaging piece.

In addition, the partial gear is provided with a magnet, the throttle position sensor is characterized in that the non-contact sensor.

In addition, the throttle position sensor is installed on the lower surface of the substrate, characterized in that the terminal is connected to the substrate.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 2 to 8. The accompanying drawings show one preferred embodiment of the present invention, and the scope of the drawings is not limited thereto. That is, easy design changes by a person skilled in the art, substitution with simple and equivalent components, and the like are also included in the scope of rights described in the claims of the present invention.

As shown, the throttle valve device 1000 according to an embodiment of the present invention and the throttle body 100 is formed with a mounting space 150, the intake passage 110 and the motor storage space 160 is open at one side; A throttle valve shaft 300 is inserted across the intake passage 110 from the mounting space 150 and is rotatably installed in the left and right directions, and the throttle valve shaft inside the intake passage 110. A throttle valve 200 coupled to 300 to open and close the intake passage 110, a motor M installed in the motor storage space 160, and a motor M installed in the mounting space 150. Power transmission unit 900 for transmitting the rotational force to the throttle valve shaft 300 receives the power generated from the throttle valve shaft, the throttle position sensor 500 for detecting the amount of rotation of the throttle valve shaft 300, the power supply and the control device Connection portion 740 and the throttle valve sharp in the mounting space 150 A coil-shaped torsion spring 400 disposed in a state of wrapping the vein 300, a lever 800 that is rotatably installed in the mounting space 150, and caught on an upper end of the torsion spring 400, The cover 120 covers the mounting space 150 of the throttle body 100.

For convenience of description, the part with the cover is defined as the upper part and the part with the intake passage in the drawing as the lower part.

First, the throttle valve 200 is installed in the intake passage 110 formed at one side of the throttle body 100 to open and close the intake passage 110. Here, the throttle valve 200 is fixed to the throttle valve shaft 300 through a screw coupling.

In addition, a motor storage space 160 in which the motor M is built is formed at the side of the throttle body 100.

And, one end of the throttle valve shaft 300 is disposed adjacent to the output shaft of the motor (M). Partial gear G1 is coupled to an end of the throttle valve shaft 300 adjacent to the output shaft of the motor M, and an intermediate gear G2 is formed between the partial gear G1 and the output shaft of the motor M. FIG. It is connected. The intermediate gear G2 is connected to the drive gear G3 installed on the output shaft of the motor M. In addition, the auxiliary gear (G4) formed at the center of one side of the intermediate gear (G2) is engaged with the partial gear (G1), the rotational force of the motor (M) is transmitted to the partial gear (G1). The gears G1, G2, G3, and G4 constitute the power transmission unit 900 of the present invention.

In addition, according to the present embodiment, the torsion spring 400 is disposed in the mounting space 150 while surrounding the throttle valve shaft 300. In particular, the torsion spring 400 is formed in a coil shape, the upper and lower ends are drawn out from the coil body, and the upper lead end 410 and the lower lead end 420 are shaped.

In addition, the lever 800 is freely rotated about the hinge shaft P at the bottom of the mounting space 150. The lever 800 has a seating groove 860 formed to seat the upper lead end 410 of the torsion spring 400.

A locking piece 910 extends downwardly around the partial gear G1, and a protrusion piece 920 is formed after a predetermined angle from the locking piece 910. The locking piece 910 is a part that is caught by the lower lead end 420 of the torsion spring 400 and the protrusion piece 920 is a part that can contact the lever 800 when the intake passage is completely closed.

At the time of initial assembly (ie, opening of the lymph groove), the upper lead end 410 and the lower lead end 420 of the torsion spring 400 are elastic in contact with the lever 800 and the engaging piece 910, respectively. A state of holding torsion stress is obtained. In particular, the upper diameter of the upper portion, which is the cover 120 side, is smaller than the lower portion, which is the throttle valve 200 side, so that the upper lead end 410 of the torsion spring 400 has a hinge shaft due to a force F for pressing the lever 800 ( The moment with respect to P) is larger than the moment due to the force f for pressing the lever 800 so that the protruding piece 920 of the partial gear G1 is fixed to the predetermined position to rotate the partial gear G1. 200) can form a lymphatic groove gap. At this time, the elastic force is still applied to the torsion spring 400.

In this state, the partial gear G1 is rotated by the driving force of the motor M to elastically implement a fully open state and a completely closed state as shown in FIG. 8.

In addition, according to the present invention, a stopper 600 protruding from the mounting space 150 to limit the movement of the locking piece 910. When the locking piece 910 is caught by the stopper 600, a completely closed state is maintained.

On the other hand, the partial gear (G1) is provided with a magnet 710, the angle is accurately detected by the throttle position sensor 500.

In particular, as shown in Figure 4, the magnet 710 is in the shape of a disc formed with a coupling hole 711, through which the throttle valve shaft 300 is coupled to be impossible to rotate. .

In addition, the magnet 710 is formed together with the partial gear G1 by an insert injection process, and the magnet 710 may be disposed separately from the partial gear G1.

On the other hand, the throttle position sensor 500 is composed of a non-contact sensor that is spaced apart from the partial gear (G1), it may be properly installed on the lower surface of the substrate 700 fixedly coupled to the cover 700. That is, the throttle position sensor 500 is disposed to face the magnet 710 so that the rotation amount of the magnet 710 can be properly sensed.

In addition, a terminal 720 for transmitting power and signals to the motor M or the throttle position sensor 500 is soldered to the substrate 700. The power and controller connection portion 740 includes a substrate 700 and a terminal 720, the substrate 700 is fixedly coupled to the cover 120, the terminal 720 is screwed to the connector 121 750 are combined.

Hereinafter, the operating principle of the throttle valve device according to an embodiment of the present invention will be described.

8 is a cross-sectional view showing a state in which the throttle valve is operated by the action of the throttle valve device according to the embodiment of the present invention.

Figure 8 (a) shows the initial state (lymph groove open state), when the power is cut off or in an emergency state such as uncontrollable throttle valve 200 is inclined with respect to the intake passage 110 to inflow of air By making this possible, the state which can run is maintained.

Lymph groove open state is possible, as described above, the torsion spring 400 is coiled, the upper withdrawal end 410 is to give a close rotational force to the lever 800 in a counterclockwise direction to be in close contact with the mounting space At the same time, the lower lead end 420 gives a counterclockwise rotational force to the partial gear G1 so that the protruding piece 920 of the partial gear G1 is caught behind the lever 800.

In particular, since the upper diameter of the upper portion of the cover 120 is smaller than the lower portion of the throttle valve 200, the hinge shaft P of the force F that the upper lead end 410 of the torsion spring 400 presses the lever 800. Moment is greater than the moment due to the force (f) for pressing the lever 800, the partial gear (G1) is fixed to a predetermined rotational position and the throttle valve (200) ) Is opened at predetermined intervals.

On the other hand, Figure 8 (b) is a state in which the throttle valve 200 is fully open by receiving a signal from the control device connected to the accelerator by rotating the partial gear (G1) clockwise by the motor. That is, when the partial gear G1 rotates in the clockwise direction, the lower end of the torsion spring 400 is pressed toward the lever 800. In this case, since the lever 800 is caught in the jaw 190 formed in the mounting space 150, the partial gear G1 is rotated while receiving the elastic resistance of the torsion spring 400.

In addition, (c) of FIG. 8 is performed by rotating the partial gear G1 counterclockwise by the motor M by receiving a signal from the control device connected to the accelerator with the throttle valve 200 completely closed. In this case, the torsion spring is rotated clockwise about the hinge axis 810 by pressing the lever 800, the projection piece 920 formed in the partial gear (G1) from the moment passing through the lymph groove opening position. Since the force is applied to the 400, the restoring force still acts in the torsion spring 400 until it is completely closed. This is because the rotation angle of the lever 800 is three times larger than the rotation angle of the partial gear G1.

According to the present invention as described above, since all the operation mechanism of the throttle valve can be implemented by only one torsion spring, there is an advantage that the internal structure is simple and easy to assemble.

In addition, the non-contact throttle position sensor can be adopted to relatively freely arrange the internal components.

Claims (5)

A throttle body having a mounting space having one side opened, an intake passage, and a motor storage space; A throttle valve shaft inserted across the intake passage from the mounting space and rotatably installed in a left and right direction; A throttle valve coupled to the throttle valve shaft in the intake passage to open and close the intake passage; A motor installed inside the motor storage space; A power transmission member installed in the mounting space to receive the power generated from the motor and transmit rotational force to the throttle valve shaft; A throttle position sensor for detecting an amount of rotation of the throttle valve shaft; Power and control connections; A coil type torsion spring arranged to surround the throttle valve shaft in the mounting space; A lever freely installed in the mounting space and caught on an upper end of the torsion spring; And A cover covering a mounting space of the throttle body, The power transmission member includes a partial gear fixed to the throttle valve shaft, the engaging piece is caught on the lower end of the torsion spring is formed around the partial gear, characterized in that the projecting piece is formed on the lever Controlled Throttle Valve Device The method of claim 1, The torsion spring has an electronically controlled throttle valve device, characterized in that the diameter of the upper end is smaller than the diameter of the lower end. The method of claim 2, The mounting space is an electronically controlled throttle valve device characterized in that the stopper protruding to limit the movement of the engaging piece. The method according to any one of claims 1 to 3, The partial gear is provided with a magnet, the throttle position sensor is an electronically controlled throttle valve device, characterized in that the non-contact sensor. The method of claim 4, wherein The throttle position sensor is installed on the lower surface of the substrate, the electronically controlled throttle valve device, characterized in that the terminal is connected.

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