KR100815162B1 - Throttle device for vehicle - Google Patents

Abstract

A throttle device for a vehicle is provided to prevent stop phenomenon of an engine by supplying a predetermined amount of air to a combustor through an opening space during limp home. A throttle device for a vehicle comprises a throttle body(100) and a spring(400) arranged at the front end of a throttle shaft(300). The throttle body has one side at which a fixing protrusion(130) is formed. A spring guide plate(500) rotates at the front end of the throttle shaft and has a spring hook(510) to which one end of the spring is fixed. A spring fixing bar(600) rotates at the front end of the throttle shaft and has a spring hook to which the other end of the spring is fixed. A rotating gear(700) is coupled with the front end of the throttle shaft and is connected with a driving section to transfer power. Fist and second locking members(520,620) are formed at the peripheral surfaces of the spring guide plate and the spring fixing bar to maintain an opening state of a throttle valve, respectively.

Description

Vehicle Throttle Device {THROTTLE DEVICE FOR VEHICLE}

1 is a perspective 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 spring according to the present invention.

Figure 4 is an assembled perspective view showing a vehicle throttle device according to the present invention.

5 is a cross-sectional view showing an operating state of a 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: fixing protrusion

140: cover 200: throttle valve

300: throttle shaft 400: spring

500: spring guide plate 600: spring fixing bar

700: rotary gear 710: support protrusion

800: drive motor 810: fixed piece

900: reduction gear

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 side 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 the return to the 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 this problem, a throttle valve structure of an engine that enables 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 also problems of assembly or cost increase and operation problems.

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

Vehicle throttle device of the present invention for achieving the above object is the amount of air supplied to the engine by opening and closing the guide tube of the throttle body as the throttle shaft rotates through the drive unit and the throttle valve rotates through the rotation of the throttle shaft. A throttle device for adjusting, comprising: a spring disposed on the front end of the throttle shaft, a spring guide plate rotatably coupled to the front end of the throttle shaft and having a spring hook fixed to one end of the spring, the throttle shaft A spring fixing bar rotatably coupled to the front end of the spring and having a spring hook fixed to the other end of the spring, the rotary gear coupled to the front end of the throttle shaft and connected to the driving unit so as to transmit power; And protrudes outward on one side of the throttle body. Crab fixing protrusions are formed, and first and second locking pieces are formed on the main surfaces of the spring guide plate and the spring fixing bar, respectively, on both sides of the fixing protrusion to fix the throttle valve in an open state. The bottom of the support projection is characterized in that the support projection is inserted between the first and second engaging pieces are formed.

Both ends of the spring are wound, characterized in that fixed to the spring hook of the spring guide plate and the spring fixing bar, respectively.

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

One surface of the throttle body is formed with an insertion groove formed with a fixing protrusion on the inner wall, characterized in that the drive motor, a spring, a spring guide plate and a spring fixing bar is installed in the insertion groove.

The insertion groove is characterized in that closed through the cover.

The outer peripheral surface of the insertion groove in which the cover is in close contact is characterized in that the pad is provided to improve the sealing force.

The spring is characterized by using a spiral spring wound spirally of a thin band-shaped metal.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 2 to 5.

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 400 disposed at the tip of the throttle shaft 300, a spring guide plate 500 at which one end of the spring 400 is fixed, and a spring fixing bar at which the other end of the spring 400 is fixed ( 600, a rotary gear 700 coupled to the front end of the throttle shaft 300, and a driving unit that is connected to the rotary gear 700 so as to transmit power, that is, the driving motor 800.

The throttle body 100 has an outer shape of the throttle device, the upper surface of the guide pipe 110 for connecting the air suction hose connected to the engine is formed to penetrate downwards, the insertion groove 120 is formed on the side, The fixing protrusion 130 is formed on the inner wall of the insertion groove 120 to protrude inward.

In addition, the throttle body 100 is provided with a cover 140 for closing the insertion groove 120, the cover 140 has a cross-sectional shape of the letter "C", the outer peripheral surface of the opening groove of the insertion groove 120 It is firmly fixed through a plurality of bolts in a state of being closely coupled to the outer peripheral surface.

In addition, a pad 150 is provided on the outer circumferential surface of the insertion groove 120 in which the cover 140 is closely contacted, and the pad 150 is made of a rubber material having elasticity.

The throttle valve 200 is for opening and closing the guide tube 110, and is rotatably provided in the guide tube 110, and has a diameter smaller than that of the guide tube 110.

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

As shown in FIG. 3, the spring 400 is disposed at the tip of the throttle shaft 300, and it is preferable to use a spiral spring wound in a spiral band of metal.

The spring guide plate 500 is for fixing the end of the spring 400, is rotatably coupled to the front end of the throttle shaft 300, and supports the bottom of the spring 400, the spring 400 on the outer peripheral surface A folding hook 410 formed at the end of the hook is caught and a spring hook (510) is fixed.

In addition, the outer circumferential surface of the spring guide plate 500 is formed with a first locking piece 520 that is engaged on one side of the fixing protrusion 130, and the first locking piece 520 is on the outer circumferential surface of the spring guide plate 500. The bending portion is bent in the shape of "a" to face the outward direction is caught on one side of the fixing protrusion 130, thereby limiting the spring guide plate 500 to rotate only in one direction.

The spring fixing bar 600 is for fixing the front end of the spring, is rotatably coupled to the front end of the throttle shaft 300, and supports the upper surface of the spring 400, the outer peripheral surface to the front end of the spring 400 A formed spring hook (610) is formed to secure the folded portion 410 '.

In addition, the outer circumferential surface of the spring fixing bar 600 is formed with a second locking piece 620 that is engaged with the other side of the fixing protrusion 130, the second locking piece 620 is on the outer circumferential surface of the spring fixing bar 600 Is extended in the outer direction is caught on the other side of the fixing projections 130, thereby limiting to rotate the spring fixing bar 600 in one direction only.

That is, the spring guide plate 500 and the first and second locking pieces 520 and 620 of the spring fixing bar 600, which are respectively fixed at both ends of the spring 400, are supported on the side surfaces of the fixing protrusion 130, respectively. As a result, the spring 400 maintains a state having elastic restoring force, and the throttle valve 200 maintains an open state in the above state.

Rotating gear 700 is for rotating the throttle shaft 300, is coupled to the front end of the throttle shaft 300, the bottom is inserted and supported between the first and second engaging pieces (520, 620) A support protrusion 710 is formed, and when the rotary gear 700 rotates through the support protrusion 710, the first locking piece 520 or the second locking piece 620 is pressed to fix the spring guide plate 500 or the spring. The bar 600 is interlocked, and thus the spring 400 is wound.

The driving motor 800 is for rotating the rotary gear 700, as shown in Figure 4, the insertion groove 120 through a plurality of bolts in a state in which the insertion groove 120 of the throttle body 100 is embedded. It is installed by the fixing piece 710 coupled to the bottom surface, the rotating shaft is connected to the rotary gear 700 so as to enable power transmission.

Accordingly, the spring guide plate 500 or the spring fixing bar 600 rotates in the direction of the fixing protrusion 130 by the elastic restoring force of the spring 400 wound when the lymph groove is broken, that is, when the electronic control unit (ECU) is broken. As the first or second locking pieces 520 and 620 are locked to the fixing protrusion 130, the throttle valve 200 is kept open.

Here, the reduction gear 900 for reducing the rotational force of the driving motor 800 is installed between the drive motor 800 and the rotary gear 700.

That is, the large diameter portion 910 of the reduction gear 900 is connected to the rotating shaft of the drive motor 800 to enable power transmission, the small diameter portion 920 is connected to the rotary gear 700 to enable power transmission.

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. 5.

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

Then, the folding portion 410 formed at the end of the spring 400 in a state in which the spring guide plate 500, the spring 400 and the spring fixing bar 600 are sequentially inserted into the front end of the throttle shaft 300 Is fixed to the spring hook 510 of the spring guide plate 500, the folded portion 410 'formed at the front end of the spring 400 is fixed to the spring hook 610 of the spring fixing bar 600.

Thereafter, the spring guide plate 500 or the spring fixing bar 600 is rotated 360 degrees in the direction in which the spring 400 is wound so that the first and second catching pieces 520 are formed by the elastic restoring force of the spring 400. 620 is elastically hung on both sides of the fixing projections 130 of the throttle body 100 to be supported.

In this state, the throttle shaft 300 is rotated and adjusted to maintain the throttle valve 200 in an open state, and then the support protrusion 710 of the rotary gear 700 is first and second engaging pieces 520. The rotary gear 700 is interlocked to the front end of the throttle shaft 300 in a state of being inserted and supported between the 620.

Then, the drive motor 800 is installed in the insertion groove 120 of the throttle body 100 through the fixing piece 710, and then the reduction gear 900 between the rotary gear 700 and the drive motor 800. To allow power transmission.

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 throttle valve is kept open because the above-described assembly configuration is maintained as shown in FIG.

That is, the throttle since the first and second locking pieces 520 and 620 are elastically hung on both sides of the fixing protrusions 130 of the throttle body 100 by the elastic restoring force of the spring 400, respectively. The throttle valve 200 connected to the shaft 300 also remains open.

Thereafter, when the engine of the vehicle is operated, the driving motor 800 is rotated by an electronic control unit (ECU: not shown), and the reducer 900 and the rotary gear 700 are rotated by the driving motor 800, The throttle valve 200 is rotated by rotating the throttle shaft 300 by the rotary gear 700.

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 motor 800 as shown in FIGS. 5B and 5C. .

Here, as the rotary gear 700 rotates, the first locking piece 520 or the second locking piece 520, 620 is rotated by the support protrusion 710 of the rotary gear 700. At the same time as to rotate the spring guide plate 500 or the spring fixing bar 600 by pressing in the direction to the spring 400 has a resilient restoring force while winding.

In this state, when the lymph groove, that is, a failure occurs in the electronic control device, the power to control the driving motor 800 is cut off, and thus the spring guide plate 500 or the spring fixing bar 600 by the elastic restoring force of the spring 400. ) Is rotated until the first locking piece 520 or the second locking piece 620 is supported on both sides of the fixing protrusion 130 of the throttle body 100 to rotate the throttle valve 200 in an open state. do.

Therefore, even if a failure occurs in the electronic control device, the throttle valve 200 is kept open by the throttle device of the present invention, thereby preventing the engine from being stopped according to a predetermined amount of air supply.

The throttle device for vehicles configured as described above can simplify the structure of the lymph grooves, which is easy to manufacture, and also maintains the throttle valve open state during the lymph grooves, thereby allowing a certain amount of air to enter the combustion chamber. By supplying the engine, it is possible to prevent the stop shape of the accident and maintain a stable operating state.

Claims (8)

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 shaft rotates through the drive unit and the throttle valve rotates through the rotation of the throttle shaft, A spring disposed at the tip of the throttle shaft, A spring guide plate rotatably coupled to the front end of the throttle shaft and having a spring hook to which one end of the spring is fixed; A spring fixing bar rotatably coupled to the front end of the throttle shaft and having a spring hook to which the other end of the spring is fixed; A rotary gear coupled to the front end of the throttle shaft and connected to the driving unit so as to transmit power; A fixing protrusion is formed on one side of the throttle body to protrude outward. First and second locking pieces are formed on main surfaces of the spring guide plate and the spring fixing bar, respectively, on both sides of the fixing protrusion to fix the throttle valve in an open state. The lower surface of the rotary gear is a vehicle throttle device, characterized in that the support projection is inserted between the first and second engaging pieces are formed. The method of claim 1, Both ends of the spring is wound in a vehicle throttle device, characterized in that fixed to the spring hook of the spring guide plate and the spring fixing bar, respectively. The method of claim 1, The drive unit is a vehicle throttle device, characterized in that the drive motor. The method of claim 3, wherein And a reduction gear for reducing the rotational force of the driving motor between the driving motor and the rotary gear. The method according to any one of claims 1 to 4, One side of the throttle body is formed with an insertion groove formed with a fixing projection on the inner wall, the vehicle throttle device, characterized in that the drive motor, a spring, a spring guide plate and a spring fixing bar is installed in the insertion groove. The method of claim 5, wherein Vehicle throttle device characterized in that closed through the cover for closing the insertion groove. The method of claim 6, The outer circumferential surface of the insertion groove in which the cover is in close contact is provided with a pad for improving the sealing force. The method of claim 1, The spring is a vehicle throttle device, characterized in that using a spiral (Spiral spring) wound around a thin band-shaped metal.

Images