KR100815164B1 - Throttle device for vehicle - Google Patents

Abstract

A throttle device for a vehicle is provided to prevent an engine from stopping by allowing a guide pipe to maintain an opening state when an ECU is out of order. A throttle device for a vehicle comprises a throttle shaft(300) that fixes a throttle valve(200) such that a guide pipe is in an opening state. A spring guide plate(400) rotates at the front end of the throttle shaft and has a spring hook(410) at one side thereof. A rotating gear(500) is coupled with the front end of the throttle shaft and has a spring hook at one side thereof. A first spring(600) has a front end locked with the spring hook of the rotating gear and a rear end locked with the spring hook of the spring guide plate. A spring arm(700) is coupled with a rotating shaft of the rotating gear and has a locking section(710) at the outer peripheral surface thereof. A second spring(800) has one end fixed to the spring guide plate and the other end elastically supported by the locking section of the spring arm.

Description

Vehicle Throttle Device {THROTTLE DEVICE FOR VEHICLE}

1 is a plan view showing a conventional vehicle throttle device.

Figure 2 is an exploded perspective view showing a vehicle throttle device according to the present invention.

Figure 3 is a perspective view showing a coupling state of the first spring according to the present invention.

Figure 4 is a perspective view showing a state in which the second spring and the spring arm in accordance with the present invention.

5 is a perspective view showing a state in which a reduction gear is installed according to the present invention.

Figure 6 is a cross-sectional view showing the opening and closing state of the vehicle throttle device according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: throttle body 110: guide tube

120: insertion groove 130: cover

140: pad

200: throttle valve

300: throttle shaft

400: spring guide plate 410: spring hook

420: protrusion

500: rotating gear 510: coupling portion

520: spring hook

600: first spring 610, 610 ': folded portion

700: spring arm 710: engaging portion

800: second spring 900: drive unit

The present invention relates to a vehicle throttle device, and more particularly, to a vehicle throttle device for maintaining a stable driving state by adjusting the amount of air flowing into the engine as the driver stops the acceleration.

In general, the throttle device is provided with a throttle valve for controlling the intake air amount, a bypass passage through a small amount of air to secure the idling rotation speed, a throttle position sensor and a dash port for detecting the throttle valve opening degree.

That is, as shown in FIG. 1, the throttle device 1 is formed by penetrating a guide tube 2 through which an air intake hose is connected, and a circular throttle valve 5 inside the guide tube 2. Is rotatably provided.

The throttle valve 5 is connected to the rotary shaft 7 of the throttle device 1, and the rotary shaft 7 is connected to the throttle cam 6 rotatably provided at a predetermined distance from the throttle device 1.

A lower end of the throttle cam 6 is provided with a stopper 9 interlocked with the throttle cam 6, and both ends of the stopper 9 and the throttle device 1 are respectively provided with a stopper 9 and a throttle. It is provided with a return spring (8) hooked to the device (1).

In addition, the throttle cam 6 is connected to an accelerator pedal (not shown) provided in the lower part of the driver's seat through the connection of a plurality of link members (not shown).

The vehicle throttle device configured as described above causes the throttle cam 6 to rotate by a link member connected to the accelerator pedal and the throttle cam 6 of the throttle device 1 provided on one side of the engine when the driver presses the accelerator pedal. do.

Then, as the rotary shaft 7 is rotated by the rotation of the throttle cam 6, the throttle valve 5 connected to the rotary shaft 7 is rotated to open the guide tube 2, so that air through the air cleaner is throttled. The device 1 is introduced into the combustion chamber.

In this state, when the driver releases the foot from the accelerator pedal when the vehicle is decelerated or stopped, the throttle cam 6 connected to the accelerator pedal by a predetermined link member has a stop spring 9 connected to the lower end thereof. 8) The throttle cam 6 is also returned to its original state by returning to its original state, and the rotary shaft 7 and the throttle valve 5 are interlocked with the throttle cam 6 due to the return of the throttle cam 6. (5) closes the guide tube (2).

Therefore, the driving speed of the vehicle is adjusted as the driver intends through the conventional vehicle throttle device configured as described above.

However, the throttle device as described above has a problem that it is difficult to make the linear state due to the large change in flow rate as the opening / closing change rate of the valve changes rapidly according to the driver's accelerator pedal operation.

In order to solve such a problem, a throttle valve structure of an engine for enabling electronic control of Korean Utility Model Publication No. 1998-054660 has been disclosed.

By opening and closing the throttle valve through the electronic control device as described above can make the flow rate passing through the throttle valve in a linear state to maintain a more stable operating state.

However, when the electronic control throttle device is broken or uncontrollable, the engine throttle or stoppage occurs as the throttle valve is completely closed.

 Here, the "lymph groove" refers to an air passage formed by opening the throttle valve at a predetermined angle so that air can be introduced therein, and is a safety device for a failure or uncontrollability of the throttle device.

However, since the structure of the conventional throttle valve device for forming the lymph groove function is very complicated, there are problems of assembly or cost increase and operation problems.

The present invention has been made to solve the above problems, the object of the present invention is to form an open space by maintaining the open state of the throttle valve even when the lymph groove (Limp Home) while forming a lymph groove structure having a simple structure It is to provide a vehicle throttle device for supplying a certain amount of air to the combustion chamber through to prevent the stop shape of the engine.

Vehicle throttle device of the present invention for achieving the above object

A throttle device for adjusting an amount of air supplied to an engine by opening and closing a guide tube of a throttle body as the throttle valve is rotated by a throttle shaft, the throttle shaft for fixing the throttle valve so that the guide tube is opened; A spring guide plate rotatably coupled to the front end of the throttle shaft and coupled to the front end of the throttle shaft and coupled to the front end of the throttle shaft and having a spring hook formed on one side thereof, the front end is engaged with the spring hook of the rotary gear. The end is coupled to the first spring, which is caught by the spring hook of the spring guide plate, the rotating shaft of the rotary gear, the spring arm is formed on the outer circumferential surface, one end is fixed to the spring guide plate and the other end is caught by the spring arm The second spring is elastically supported, the rotary gear and the power transmission It characterized in that it comprises a drive unit that is possibly connected.

Both ends of the first spring may be fixed to the spring guide plate and the rotary gear, respectively, in a wound state.

The drive unit is characterized in that the drive motor.

Between the drive unit and the rotary gear is characterized in that it comprises a reduction gear for reducing the rotational force of the drive unit.

The drive unit, the first and second springs, the spring guide plate is characterized in that it is installed in the insertion groove formed on one surface of the throttle body.

The insertion groove is characterized in that closed through the cover is coupled to the throttle body.

The contact surface of the cover and the throttle body is characterized in that the pad is provided for improving the sealing force.

The first spring is characterized by using a spiral spring wound in a thin strip-shaped metal spirally.

The second spring is characterized in that the leaf spring bent in the "Z" shape.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 2 to 6.

As shown in FIG. 2, the vehicle throttle device of the present invention is for supplying a certain amount of air to a combustion chamber when a limp home (refers to a failure of an electronic control unit (ECU)), an engine (not shown). Throttle body (100) formed with a guide tube 110 is connected to the air suction hose of the), the throttle valve (200) provided in the guide tube 110, the throttle shaft (200) is connected to the end ( 300, a spring guide plate 400 fixed to the front end of the throttle shaft 300, a rotary gear 500 coupled to the front end of the throttle shaft 300, and the front end to the rotary gear 500 The first end 600 is caught and the end is caught on the spring guide plate 400, the spring arm 700 is coupled to the rotary shaft of the rotary gear 500, the hook is formed on one side, and the spring arm 700 is caught Power transmission with the second spring 800 and the rotary gear 500 is elastically supported on the part It includes a driver 900 that is capable of being connected.

The throttle body 100 has an external shape of a throttle device, and an upper surface of the throttle body 100 is formed so that a guide tube 110 for connecting an air suction hose (not shown) connected to an engine (not shown) penetrates downwardly and is inserted into a side surface thereof. Groove 120 is formed.

In addition, the throttle body 100 is provided with a cover 130 for closing the insertion groove 120, the cover 130 has a cross-sectional shape of "C", the outer peripheral surface of the groove opened in one direction is the insertion groove It is firmly fixed through a plurality of bolts in a state in close contact with the outer peripheral surface of the 120.

In addition, a pad 140 is provided on the outer circumferential surface of the insertion groove 120 in which the cover 130 is in close contact with the cover 130, and the pad 140 is made of a rubber material having elasticity.

Throttle valve 200 is for opening and closing the guide tube 110, has a disc shape, rotatably provided inside the guide tube 110, the diameter has a size smaller than the diameter of the guide tube 110. .

The throttle shaft 300 is for rotating the throttle valve 200 in the guide tube 110, the end is rotatably fixed to the inner peripheral surface of the guide tube 110 through the inner surface of the insertion groove 120, the guide The throttle valve 200 is fixed to at least one end bolt located in the upper end surface of the pipe 110.

As shown in Figure 3, the spring guide plate 400 is for fixing the end of the first spring 600, which will be described later, is rotatably coupled to the front end of the throttle shaft 300, the outer peripheral surface in the upper direction A bent spring hook (410) is formed, and a bottom portion is formed with a protrusion 420 bent downward.

The rotary gear 500 is for rotating the throttle shaft 300 and fixing the front end of the first spring 600. In the center, the coupling part 510 is formed to be coupled to the front end of the throttle shaft 300. In addition, a spring hook 520 is formed on the outer circumferential surface of the coupling part 510 so that the front end of the first spring 600 is caught and is connected to the power unit 900 to be described later through the outer circumferential surface. .

The first spring 600 is provided between the spring guide plate 400 and the rotary gear 500, and folded portions 610 and 610 ', which are bent by “a”, are formed at both ends thereof, respectively. The spring hook 410 of 400 and the spring hook 520 of the rotary gear 500 are respectively hooked, it is preferable to use a spiral spring wound spirally of a thin band-shaped metal.

As shown in FIG. 4, the spring arm 700 is inserted and fixed to the outer circumferential surface of the coupling part 510 of the rotary gear 500 so as to be interlocked with the rotary gear 500. The portion 710 is formed, and the locking portion 710 is formed of an inclined surface and a vertical surface, one surface of the second spring 800 to be described later is elastically supported on the inclined surface.

The second spring 800 is used to provide elastic restoring force to the spring arm 700, and uses a leaf spring, one end of which is welded, bolted, or glued to the protrusion 420 protruding from the bottom of the spring guide plate 400. It is fixed through a fixing means such as, the other end is elastically supported on the inclined surface of the engaging portion 710 of the spring arm (700).

That is, the second spring 800 is elastically supported by the spring arm 700 so that the spring guide plate 400 or the rotary gear 500 is rotated by the elastic restoring force of the first spring 600 to maintain the stop state. Let's go.

At this time, the throttle valve 200 connected to the throttle shaft 300 maintains the state in which the guide pipe 110 is opened.

In this state, when the rotary gear 500 rotates in the clockwise direction, the throttle shaft 300 rotates and the throttle valve 200 rotates to gradually open the guide pipe 110 and at the same time the first spring. As the 600 is wound, the elastic restoring force is stored.

Thereafter, when the power of the driving unit 900 is cut off, the rotary gear 500 and the spring arm 700 are rotated in the counterclockwise direction by the elastic restoring force of the first spring 600, thereby coupling to the throttle shaft 300. The guide tube 110 is gradually closed while the throttle valve 200 rotates, and at this time, the throttle valve 200 stops as the spring arm 700 is supported by the second spring 800, thereby guiding the guide tube 110. ) Will remain open.

On the other hand, when the rotary gear 500 is rotated counterclockwise, the throttle valve 200 coupled to the throttle shaft 300 rotates to gradually close the guide pipe 110 and at the same time the spring arm 700 As the second spring 800 presses the second spring 800 is bent to store the elastic restoring force.

Subsequently, when the power of the driving unit 900 is cut off, the spring arm 700 is returned to the initial position by pressing the spring arm 700 by the elastic restoring force of the second spring 800, and thus the throttle valve 200. Return to the initial position to maintain the guide tube 110 in an open state.

Therefore, when the power source of the driving unit 900 is cut off, the throttle valve 200 returns to the initial position by the elastic restoring force of the first and second springs 600 and 800, so that the guide tube 110 is always opened. To maintain a constant amount of air to the engine.

As shown in FIG. 5, the driving unit 900 is for rotating the rotary gear 500, and preferably, a driving motor is used, and a plurality of driving units 900 are embedded in the insertion groove 120 of the throttle body 100. It is installed by the fixing piece 920 coupled to the bottom surface of the insertion groove 120 through the four bolts, the rotating shaft is connected to the rotary gear 500 so as to enable power transmission.

Therefore, the rotary gear 500 may be caused by the elastic restoring force of the first and second springs 600 and 800 as the driving force of the driving unit 900 is removed during the lymph groove, that is, when a failure occurs in the electronic control unit (ECU). Alternatively, the spring arm 700 rotates to rotate the throttle valve 200 to an initial state, thereby maintaining the guide tube 110 in an open state.

Here, the reduction gear 910 for reducing the rotational force of the driving unit 900 is provided between the rotary gear 500 and the driving unit 900.

That is, the large diameter portion 911 of the reduction gear 910 is connected to the driving unit 800 so that power transmission is possible, and the small diameter portion 912 of the reduction gear 910 is capable of power transmission with the rotary gear 500. Connected.

The assembly and operation of the vehicle throttle device according to the present invention configured as described above will be described with reference to FIG. 6.

First, the end of the throttle shaft 300 is rotatably fixed to the inner wall of the guide tube 110 through the inner surface of the insertion groove 120 of the throttle body 100, and then the throttle valve 200 guide tube 110 It is fixed through at least one bolt in a state arranged on the upper surface of the throttle shaft 300 located inside.

Then, the spring arm 700 is coupled to the coupling portion 510 of the rotary gear 500, and then one end of the second spring 800 is fixed to the protrusion 420 of the spring guide plate 400.

Then, the folded portion formed at the end of the first spring 600 in a state in which the spring guide plate 400, the first spring 600 and the rotary gear 500 are sequentially coupled to the front end of the throttle shaft 300 ( 610 is fixed to the spring hook 410 of the spring guide plate 400, and the folded portion 610 'formed at the tip of the first spring 600 is hooked to the spring hook 520 of the rotary gear 500 The other end of the second spring 800 is positioned to be elastically supported on the inclined surface of the locking portion 710 of the spring arm 700.

Then, the spring guide plate 400 or the rotary gear 500 is rotated in the direction in which the first spring 600 is wound so that the spring guide plate 400 and the rotary gear (by the elastic restoring force of the first spring 600). 500) does not flow and has a stable position.

In this state, the throttle valve 200 is rotated through the throttle shaft 300 to maintain the guide tube 110 in the open state by the throttle valve 200.

Then, the drive unit 900 is installed in the insertion groove 120 of the throttle body 100 through the fixing piece 920, and then, the power reduction gear 910 is driven between the rotary gear 500 and the drive unit 900. The transfer is made possible.

Then, if the cover 140 is firmly fixed through a plurality of bolts in close contact with the outer circumferential surface of the insertion groove 120, the assembly of the vehicle throttle device is completed.

Therefore, in the state where the engine of the vehicle is stopped, the guide tube of the throttle device is kept open because the above-described assembly configuration is maintained as shown in FIG. Done.

Subsequently, when the engine of the vehicle is operated, the driving unit 900 rotates by an electronic control unit (ECU) (not shown), and the reduction gear 910 and the rotating gear 500 rotate by the driving unit 900 to rotate. As the throttle shaft 300 rotates by the gear 500, the throttle valve 200 rotates.

Accordingly, the throttle valve 200 opens or closes the guide tube 110 while rotating clockwise or counterclockwise according to the rotational direction of the driving unit 900 as shown in FIGS. 5B and 5C.

That is, when the rotary gear 500 is rotated in the counterclockwise direction by the driving unit 900, the guide tube 110 is opened as shown in (b) of Figure 5, at this time to the rotary gear 500 The first spring 600 is wound by the folded portion 610 ′ of the locked first spring 600 to store the elastic restoring force.

In this state, when the lymph groove, that is, a failure occurs in the electronic control device, the power to control the driving unit 900 is cut off, so that the rotary gear 500 is spring arm 700 by the elastic restoring force of the first spring 600. By rotating in the clockwise direction until the engaging portion 710 of the second spring 800 is supported to return the throttle valve 200 to the initial position to maintain the guide tube 110 in an open state.

On the other hand, when the rotary gear 500 is rotated in the clockwise direction by the drive unit 900, as shown in (c) of FIG. 5, the guide tube 110 is in a closed state, and the spring arm 700 is caught. As the part 710 presses the second spring 800, the second spring 800 stores the elastic restoring force.

In this state, when the lymph groove, that is, a failure occurs in the electronic control apparatus, the power to control the driving unit 900 is cut off, so that the rotary gear 500 may be driven by the elastic restoring force of the second spring 800. By rotating in a counterclockwise direction until it is caught in the folded portion 610 ′ of), the throttle valve 200 is returned to the initial position, thereby maintaining the guide tube 110 in an open state.

Therefore, even if a failure occurs in the electronic control device, the guide tube 110 of the throttle device of the present invention maintains an open state, thereby preventing the engine from being stopped according to a predetermined amount of air supply.

Through the vehicle throttle device configured as described above to maintain the open state of the throttle valve even in the lymph groove, by supplying a certain amount of air to the combustion chamber through the open space to prevent the stop shape of the engine to maintain an accident occurrence and stable operation state It has an effect.

Claims (9)

In the throttle device for adjusting the amount of air supplied to the engine by opening and closing the guide tube of the throttle body as the throttle valve is rotated by the throttle shaft, A throttle shaft for fixing the throttle valve so that the guide tube is in an open state, A spring guide plate rotatably coupled to the front end of the throttle shaft and having a spring hook formed at one side thereof; Rotating gear coupled to the front end of the throttle shaft and formed with a spring hook on one side, The first end is engaged with the spring hook of the rotary gear and the end is the first spring that is engaged with the spring hook of the spring guide plate, A spring arm coupled to the rotary shaft of the rotary gear and having a locking portion formed on an outer circumferential surface thereof; A second spring, one end of which is fixed to the spring guide plate and the other end of which is elastically supported by the engaging portion of the spring arm; A throttle device for a vehicle, characterized in that it comprises a drive unit which is connected to the rotary gear and the power transmission. The method of claim 1, Both ends of the first spring is wound in a vehicle throttle device, characterized in that fixed to the spring guide plate and the rotary gear respectively. The method of claim 2, The drive unit is a vehicle throttle device, characterized in that the drive motor. The method of claim 1, And a reduction gear for reducing the rotational force of the driving portion between the driving portion and the rotary gear. The method according to any one of claims 1 to 4, The drive unit, the first and second springs, the spring guide plate is a vehicle throttle device, characterized in that the inner groove is formed in one side of the throttle body. The method of claim 5, wherein The insertion groove is a vehicle throttle device, characterized in that through the cover is coupled to the throttle body. The method of claim 6, The throttle device for a vehicle, characterized in that a pad for improving the sealing force is provided on the contact surface of the cover and the throttle body. The method of claim 1, The first spring is a vehicle throttle device, characterized in that using a spiral (Spiral spring) wound around a thin band-shaped metal. The method of claim 1, The second spring is a leaf spring for a vehicle throttle device, characterized in that.

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