KR20170043436A - Valve Assembly For Vehicle Intake Manifold - Google Patents

Abstract

The present invention provides a valve assembly for an intake manifold of a vehicle, comprising: a shaft which is installed by crossing an intake passage of the intake manifold of the vehicle; a flap which is made by injection molding on the external surface of the shaft, which is precisely assembled without a tolerance or an interval from the shaft, which corresponds to each intake passage of the intake manifold, which is placed along an axial direction of the shaft at regular intervals, and which opens/closes the intake passage by the rotation of the shaft; and a cage which is made by injection molding on both end units of the shaft, which is precisely assembled with the shaft, which has a slot in a direction at right angles with the shaft to control the interval from the shaft, which is assembled on the intake manifold, and which supports the rotation of the shaft. Accordingly, an embodiment of the present invention can use an injection molding method, manufacture the flap, the cage, and a flow prevention unit through a single process, improve work convenience, have an ideal dimension in assembly of parts, and greatly enhance assembly precision. In addition, the present invention can suppress abrasion due to friction between parts, improve durability of the product, and remove vibration and noise from vibration, which is generated by the tolerance or interval in assembly of conventional products. In addition, the present invention can control the interval between the shaft and the cage, make the rotation of the shaft smooth, and secure accuracy and safety in the opening/closing motion.

Description

Technical Field [0001] The present invention relates to a valve assembly for a vehicle intake manifold,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve assembly for an intake manifold for an automobile, and more particularly, to a valve assembly for an intake manifold for an automobile, The present invention relates to a valve assembly for an intake manifold for an automotive vehicle, which is capable of suppressing driving noise and preventing deterioration of intake efficiency by increasing assembling and coupling characteristics between parts.

The recent global automotive market is developing at a very rapid pace, centered on eco-friendly technology, passenger safety and convenience, and communication and IT technologies. In the future power train system, (EV) and fuel cell vehicle (FCEV) are being developed as key technologies.

However, future electric energy is expected to take some time to replace fossil fuels due to infrastructure construction, technical and economic problems. Accordingly, it is believed that the development of gasoline and diesel engines will be continued in the future.

Especially, in the development of gasoline engine, it has developed remarkably by incorporating the latest technologies such as gasoline direct injection (GDI) system, variable intake valve system, and continuous variable valve lift (CVVL) system. In addition, in accordance with the global trend of downsizing and downsizing of the engine, the development of a vehicle using a turbocharged engine that maximizes the engine performance by maximizing the suction volume by using a turbocharger system has been actively developed .

On the other hand, in order for the automobile engine to operate smoothly, an intake device for sucking a mixture in each cylinder and an exhaust device for exhausting the gas after combustion must be provided. In the intake device (intake system) An air cleaner for removing dust and the like in the cylinder, and an intake manifold for distributing the mixer to each cylinder. The flow path of the sucked air passes through the air purifier, passes through the throttle body, enters the cylinder head through the intake manifold, mixes with the fuel to cause an explosion, and then exits to the exhaust manifold Flow.

Here, the intake manifold distributes intake air, fuel, blow-by gas and exhaust gas recirculation gas evenly to each cylinder. In order to increase the volume efficiency and improve the output performance, And a valve assembly for controlling the respective air flow rates is mounted in each intake passage in the intake manifold.

The valve assembly includes a shaft having a rectangular or circular shape, a hinge support for supporting the rotation of the shaft, a bearing further provided on the support for smoothly rotating the shaft, A flap for controlling the flow rate, and a finished rubber covered on the outer periphery of the flap so as to maintain airtightness when the intake passage is sealed. Normally, the shaft is made of stainless steel, Plastic or stainless steel is used.

However, since the components of the conventional valve assembly are individually injected and assembled or applied to the intake manifold, interference occurs due to a gap between the tolerance of the shaft and the tolerance of the cage, friction due to interference increases, and wear occurs , Noise is generated by vibration caused by looseness, and it is difficult to manage the gap between the cage and the shaft.

In addition, since the manufacturing process is complicated, the composition is inferior. In the case of plastic, deformation due to shrinkage may occur due to the characteristics of injection molding.

In addition, there is a problem in that abrasion occurs between respective parts at the time of using for a long time due to clearance between parts and contraction / deformation caused by injection molding of plastic, thereby shortening the life of the product and deteriorating the performance of the product.

Korean Patent Publication No. 10-2015-0024666 (Feb. Korean Patent Publication No. 10-2003-0050624 (Jun. 25, 2003)

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems,

It is an object of the present invention to provide a valve assembly in which a prepared shaft is housed in a mold and then a flap and a cage are integrally formed, thereby manufacturing a valve assembly, thereby eliminating assembly tolerances and clearances between components, To thereby improve the durability of the product, and to shorten the manufacturing process and improve the convenience of the operation.

It is another object of the present invention to provide a flap which has a slot formed in a cage for supporting a rotational movement of a shaft and a clearance adjusting member is inserted in a slot to adjust the clearance between the cage and the shaft, Thereby improving the accuracy and safety of the opening and closing operation.

According to an aspect of the present invention, there is provided a valve assembly for an intake manifold for an automotive vehicle, including: a shaft installed across an intake passage of an intake manifold of an automobile; And a plurality of intake manifolds arranged at predetermined intervals along the axial direction of the shaft so as to correspond to the respective intake passages of the intake manifold, A flap for opening and closing the passage; A shaft is formed at both ends of the shaft by injection molding and is precisely assembled with the shaft and a slot is formed in a direction orthogonal to the shaft so that a gap between the shaft and the shaft is adjusted, And a cage which is provided on the lower surface of the housing.

The shaft may further include a rotation stopper for preventing rotation of the flap at a position where the flap is injection molded, and a protrusion for preventing the cage from being disengaged from the position where the cage is injection molded is further provided .

In addition, the present invention is characterized in that, between the flaps and the flaps, which are arranged at regular intervals along the axial direction of the shaft, there is provided a moving diaphragm for maintaining the gap between the flaps and preventing the axial movement of the flaps.

In this case, the flow stopper is injection-molded on the outer surface of the shaft, and the shaft is further provided with a latching jaw for preventing axial movement of the fluidizing chamber at a position where the fluidizing chamber is injection-molded.

The flap may be further provided with a sealing portion which is closely attached to the intake passage at a large area when the intake passage is closed by the flap to maintain the airtightness.

The flap includes a fixed pipe surrounding the outer surface of the shaft and an opening and closing plate extending outwardly from the opposite ends of the fixed pipe at predetermined intervals so as to protrude from both sides of the fixed pipe and having a shape corresponding to the intake passage, .

The sealing portion is formed by integrally molding a blade piece fitted into the rim of the opening / closing plate and a cap fitted to both ends of the fixing pipe.

Further, the sealing portion is molded integrally with the flap.

In addition, a gap adjusting member for adjusting the gap with the shaft is inserted into the slot of the cage.

The gap regulating member has a T-shaped structure having an insertion piece fitted into the slot and a contact piece extending outward from the one end of the insertion piece to both sides to be in close contact with the outer surface of the cage when the insertion piece is inserted into the slot And the size of the gap is adjusted according to the diameter of the insertion piece.

In addition, the gap adjusting member is formed of a pin inserted into the slot, the diameter of the fin is larger than the diameter of the slot, and the size of the gap is adjusted according to the diameter of the fin.

The gap regulating member may include an insertion protrusion integrally formed on one surface of a housing of an intake manifold corresponding to the slot so as to be fitted into the slot when assembled with the intake manifold.

According to the embodiment of the present invention, the flap, the cage, and the fluidized-bed district are formed in one step on the shaft by using the injection molding method, thereby improving the convenience of the operation and providing an ideal dimension The accuracy is greatly improved.

In addition, the improvement in assembling precision between parts has the effect of suppressing wear due to friction between parts, thereby improving the durability of the product, and eliminating noise due to vibration and vibration caused by assembly tolerances and clearances between existing products.

Further, by adjusting the clearance between the shaft and the cage, the shaft can be smoothly rotated, friction between the shaft and the cage can be prevented, and accuracy and safety of opening and closing operations can be ensured.

In addition, when the intake passage is sealed, the air passage is tightly adhered to a large area to maintain the airtightness, and the effect of preventing the vibration and increasing the airtightness by the airtightness can be increased.

Further, by providing the floating region between the flap and the flap, it is possible to maintain the gap between the flaps and prevent the flap from moving in the axial direction, thereby preventing the friction due to the side interference.

Further, by increasing the coupling force between the components, the life of the product is increased, the function of the intake manifold is improved, the fuel efficiency is improved, and the engine performance is improved.

1 is a perspective view for explaining a concept of a valve assembly used in an automotive intake manifold according to an embodiment of the present invention;
2 is a perspective view illustrating a valve assembly for a motor vehicle intake manifold according to an embodiment of the present invention;
3 is an exploded perspective view for explaining a configuration of a valve intake valve assembly for an automotive intake manifold according to an embodiment of the present invention;
4 is a perspective view showing a shaft of a valve assembly for an automotive intake manifold according to an embodiment of the present invention;
5 is a perspective view showing a first embodiment of a gap adjusting member inserted into a slot of a cage in a valve assembly for a motor vehicle intake manifold according to an embodiment of the present invention.
6 is a perspective view illustrating a second embodiment of a gap adjusting member inserted into a slot of a cage in a valve assembly for an intake manifold for an automobile according to an embodiment of the present invention.
FIG. 7 is a perspective view showing a third embodiment of a gap adjusting member inserted into a slot of a cage in a valve intake valve assembly for an intake manifold according to an embodiment of the present invention; FIG.

These and other objects, features and other advantages of the present invention will become more apparent by describing in detail preferred embodiments of the present invention with reference to the accompanying drawings. Hereinafter, a valve assembly for an automotive intake manifold according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. For purposes of this specification, like reference numerals in the drawings denote like elements unless otherwise indicated.

Referring to FIG. 1, a valve assembly according to an embodiment of the present invention is disposed in an intake passage of an intake manifold of an automotive vehicle. Referring to FIGS. 2 and 3, The shaft of the valve assembly for an intake manifold of an automobile will be described in detail with reference to FIG. 4, and a gap adjusting member inserted into a slot of the cage, with reference to FIGS. 5 to 7, The first to third embodiments of the present invention will be described. Here, one embodiment of the present invention shows a state where two flaps are provided for the sake of understanding, but it is preferable that the actual use is provided corresponding to the number of cylinders of the engine.

1, a valve assembly 200 for controlling an air discharge (air flow rate) is mounted in the intake passage 110 of the intake manifold 100 in order to improve engine performance and reduce exhaust gas .

As shown in FIGS. 2 to 3, the valve assembly 200 includes a shaft 210 installed across the intake passage of the intake manifold of the automobile, and a shaft 210 formed on the outer surface of the shaft, A flap (220) arranged at predetermined intervals along the axial direction of the shaft so as to correspond to the respective intake passages of the intake manifold so as to open and close the intake passage by rotation of the shaft, And a cage 240 which is formed in a direction orthogonal to the shaft so that the clearance between the shaft and the shaft is adjusted and assembled to the housing of the intake manifold and supports the rotation of the shaft.

A flap 220 is disposed at regular intervals along the axial direction of the shaft 210 and a flap 220 is provided between the flap 220 and the flap 220 to prevent the flap 220 from moving in the axial direction. (260). At this time, the moving diaphragm 260 is injection-molded on the shaft 210 together with the molding of the flap 220 and the cage 240.

First, the shaft 210 is installed across the intake passage 110 of the intake manifold of the vehicle. Both sides of the shaft 210 are rotatably supported by the cage 240. The shaft 210 is engaged with the internal combustion engine drive of the vehicle, .

3 and 4, the shaft 210 is formed of a circular rod made of stainless steel and has a rotation stopper (not shown) for preventing rotation of the flap 220 at a position where the flap 220 is injection- 211 are provided.

Here, the rotation stopper 211 may be a node or a knurl protruding from the outer surface of the shaft 210, or may have a partially deformed shape by cutting or flatly pressing the node.

The shaft 210 is provided with a protrusion 212 for preventing the cage 240 from being separated from the cage 240 at a position where the cage 240 is injection molded.

The cage 240 has a slot 231 formed in a direction orthogonal to the shaft 210 so that the clearance between the cage 240 and the shaft 210 can be adjusted so that the cage 240 can move in the axial direction. The protrusion 212 formed on the shaft 210 is provided on the outer side of the cage 240 to prevent the cage 240 from being separated from the shaft 210 when the cage 240 is moved in the axial direction.

In addition, the shaft 210 is provided with a locking protrusion 213 for preventing the axial direction movement of the fluid chamber 260 at a position where the fluid chamber 260 is injection-molded.

Here, the rotation stopper 211 and the protrusion 212 and the stopping jaw 213 formed on the shaft 210 can be pressed or injection-molded.

The shaft 210 having the rotation stopper 211, the protrusion 212 and the stopper 213 formed therein is inserted into the mold and the flap 220, the cage 240, the diaphragm 260, Is formed at one time by injection molding. That is, the flap 220 is injection-molded on the rotation stopper 211 formed on the shaft 210, the cage is injection-molded on one side of the protrusion 212, Is injection-molded.

The formed flap 220 includes a fixed pipe 221 that surrounds the outer surface of the shaft 210 and has a predetermined length and a fixed pipe 221 that extends outward from the both ends of the fixed pipe so as to protrude to both sides, And an opening / closing plate 222 having a shape.

The flap 220 is provided with a sealing portion 230 which is closely attached to the intake passage at a large area to maintain airtightness when the intake passage is closed by the flap.

The sealing part 230 is integrally formed with a blade piece 231 fitted to the edge of the opening and closing plate and an extension part 232 fitted to both ends of the fixing pipe. The cone-shaped portion 232 surrounds the flap fixing pipe 221 to prevent vibration and enhance the airtight effect.

 Here, the sealing portion 230 may be separately molded and fitted in the flap 220, but is preferably molded integrally with the flap 220.

The cage 240 is a means for supporting the shaft 210. One end of the cage 240 is inserted and fixed in the assembly groove 120 provided in the housing of the intake manifold.

Since the cage 240 is injection-molded on the outer surface of the shaft 210, the remaining portion of the cage 240 except the slot 241 covers the outer surface of the shaft 210. Therefore, the supporting property of supporting the shaft 210 is good, and no noise is generated when the shaft 210 rotates.

5 to 7, a gap adjusting member 250 for adjusting the gap with the shaft 210 is inserted into the slot 241 of the cage. Here, the gap adjusting member 250 greatly reduces the drag (drag) applied to the shaft 210 from the cage 240, thereby functioning to smoothly rotate the shaft.

5, the first embodiment of the gap regulating member 250 includes an insertion piece 251 to be inserted into the slot 241, and an insertion piece 251 extending outward from the one end of the insertion piece to both sides, And a contact piece 252 which is in close contact with the outer surface of the cage. The diameter of the insertion piece 251 inserted into the slot 241 can be changed according to the size of the gap to be adjusted and the degree of opening of the slot 241 varies according to the diameter of the insertion piece 251, .

6, the second embodiment of the gap regulating member 250 may be configured as a pin that fits in the slot 241. [ Here, the diameter of the fin is larger than the diameter of the slot 241, and the size of the gap can be adjusted by making the diameter of the fin different according to the size of the gap to be adjusted. At this time, a groove corresponding to the outer shape of the pin can be formed on the inner surface of the slot 241 so that the insertion of the pin is easy and the pin can be stably inserted between the slots.

 7, the third embodiment of the gap regulating member 250 is fitted into the slot 241 when assembled with the intake manifold 100, so as to adjust the clearance, And an insertion protrusion integrally formed on the inner surface of the base 120.

That is, in the first and second embodiments, the separately provided gap adjustment member 250 is fitted into the slot 241, but the third embodiment is different from the first embodiment in that the gap adjustment member 250 is integrally provided on the inner surface of the assembly groove 120 of the intake manifold The insertion protrusion is fitted into the slot 241 when assembled with the cage 240 to adjust the gap.

In addition, the shape of the gap adjusting member 250 may be variously modified, and any shape may be used as long as it is interposed in the slot 241 and can control the gap between the shaft 210 and the cage 240.

As described above, according to the present invention, the flap, the cage and the fluidized-bed district are formed on the shaft in one step by using the injection molding method, thereby improving the work convenience and the ideal dimension according to the assembly between the parts, Can be greatly improved.

In addition, the improvement of assembling precision between parts improves the durability of the product by suppressing the abrasion due to friction between the parts, and eliminates noise due to vibration and vibration caused by assembly tolerance and clearance between existing products.

Further, by increasing the coupling force between the flap, the cage, and the flow stopper by machining a rotation stopper for preventing rotation of the flap on the shaft, a protrusion for preventing the cage from coming off, and a stopper for preventing axial movement of the fluidized- The lifetime of the product is increased, the deterioration of the cross section of the airflow portion is minimized, the airflow is improved, and the accuracy and safety of the opening and closing operation can be ensured.

In addition, since the cage covers the outer surface of the shaft except for the slotted portion, the support for supporting the shaft is good, and by adjusting the gap between the shaft and the cage by inserting the gap adjusting member into the slot of the cage, Smoothness, and prevents friction between the shaft and the cage.

Further, the sealing portion provided on the flap is closely contacted with the intake passage in a wide area when the intake passage is closed to maintain the airtightness, and the effect of preventing the vibration and increasing the airtightness is increased.

In addition, the flow restriction port is provided between the flap and the flap to maintain the gap between the flaps and prevent axial movement of the flap, thereby preventing friction due to side interference.

In addition, it is possible to improve the function of the intake manifold, thereby increasing fuel efficiency and improving engine performance.

Although the preferred embodiments of the present invention have been described, the present invention is not limited to the specific embodiments described above. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the appended claims, And equivalents may be resorted to as falling within the scope of the invention.

100: intake manifold folder 110: intake passage
120: Assembly groove 200: Valve assembly
210: shaft 211: rotating chamber
212: projection 213:
220: flap 221: fixed pipe
222: opening and closing plate 230: sealing part
231: Day reorganization 232: Cuspid
240: Cage 241: Slot
250: gap adjusting member 251:
252: Contact piece 260: Milky way

Claims (13)

A shaft installed across the intake passage of the vehicle intake manifold;
And a plurality of intake manifolds arranged at predetermined intervals along the axial direction of the shaft so as to correspond to the respective intake passages of the intake manifold, A flap for opening and closing the passage;
A shaft is formed at both ends of the shaft by injection molding and is precisely assembled with the shaft and a slot is formed in a direction orthogonal to the shaft so that a gap between the shaft and the shaft is adjusted, Cage;
And a valve assembly for a vehicle intake manifold. The method according to claim 1,
Wherein the shaft is provided with a rotation stopper for preventing rotation of the flap at a position where the flap is injection molded. The method according to claim 1,
Wherein the shaft is provided with a projection for preventing the cage from being separated from the cage at a position where the cage is injection molded. The method according to claim 1,
Wherein a flap is disposed between the flap and the flap which are arranged at regular intervals along the axial direction of the shaft to prevent the flap from moving in the axial direction while maintaining a gap between the flaps. 5. The method of claim 4,
Wherein the flow stopper is formed on the outer surface of the shaft by injection molding,
Wherein the shaft is provided with a latching jaw for preventing axial movement of the fluidizing chamber at a position where the fluidizing chamber is injection molded. The method according to claim 1,
Wherein a flap has a sealing portion which is closely attached to the intake passage at a large area when the intake passage is closed by the flap to maintain airtightness. The method according to claim 6,
The flap includes a fixed pipe surrounding the shaft, and an opening / closing plate extending outwardly from the both ends of the fixed pipe so as to protrude from both ends of the fixed pipe and having a shape corresponding to the intake passage, A valve assembly for a car intake manifold characterized by: 8. The method of claim 7,
Wherein the sealing portion is integrally formed with a blade piece fitted to a rim of the opening and closing plate and a cap fitted to both ends of the fixing pipe. 9. The method of claim 8,
Wherein the sealing portion is molded integrally with the flap. The method according to claim 1,
And a gap adjusting member for adjusting the gap with the shaft is inserted into the slot of the cage. 11. The method of claim 10,
The gap regulating member has a T-shaped structure composed of an insertion piece fitted into the slot and a contact piece extending outward from the one end of the insertion piece to both sides so as to be in close contact with the outer surface of the cage when the insertion piece is inserted into the slot And the size of the gap is adjusted according to the diameter of the insertion hole. 11. The method of claim 10,
Wherein the gap regulating member is formed of a pin inserted in the slot, the diameter of the pin is larger than the diameter of the slot, and the size of the gap is adjusted according to the diameter of the pin. assembly. 11. The method of claim 10,
Wherein the gap regulating member comprises an insertion protrusion integrally formed on an inner surface of an assembly groove of an intake manifold corresponding to the slot so as to be fitted into the slot when assembled with the intake manifold. Valve assembly.

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