KR102193007B1 - Air duct having a coupling structure for preventing vortex - Google Patents

Abstract

An air duct having an anti-vortex coupling structure is disclosed. The air duct having a vortex prevention coupling structure according to the present invention is an air duct consisting of a combination of a first part and a second part to distribute air discharged from a vehicle air conditioner to various points in a vehicle, wherein the first and second parts An intake port formed by one end of the inlet to receive the discharged air; A pair of air outlets formed by the other ends of the first and second parts so as to communicate with the air intakes to distribute and deliver air provided to the air intakes to the left and right; A guide plate protruding from one of the first part and the second part to the other so that air flows smoothly through the air supply port to partition the air supply port; And a concave groove formed concavely in the other one of the first part and the second part so as not to interfere with the flow of air and fitted with the end of the guide plate. According to the present invention, a guide plate that divides the interior of an air duct consisting of one inlet port and a pair of inlet ports, which are formed by one end and the other end of the first and second parts that are coupled to each other, communicate with the flowing air. The guide plate can be firmly supported even with a strong flow of air due to being fitted into the concave groove that has been formed to reduce interference, and there is an effect of inducing a smooth air flow to the delivery port in a state where irregular eddy currents are reduced.

Description

Air duct with vortex prevention coupling structure {AIR DUCT HAVING A COUPLING STRUCTURE FOR PREVENTING VORTEX}

The present invention relates to an air duct having a vortex prevention coupling structure, and more particularly, air with a coupling structure for smoothly distributing air discharged from a vehicle air conditioner to various points in a vehicle without loss of air volume due to eddy currents. It's about the duct.

A vehicle air conditioning system (HVAC) is composed of a cooling unit, a heater unit, a blower unit, and the like, and provides air conditioned to various points inside the vehicle through an air duct coupled with the blower unit.

Here, the air duct is a device that includes both a defroster attached to the front windshield of the driver's seat to remove it so that the view is not obscured by frost or ice and snow, and a ventilation duct (channel) at the center and sides for controlling the cooling and heating of the vehicle, at least Two or more parts are joined together to form a complex multiple duct structure.

The plurality of open ends formed at the ends of each duct structure constituting the air duct are coupled in communication with the air outlet of the crash pad, which is a vehicle interior, so that the air duct and the crash pad form one assembly.

In the air duct having a plurality of independent ducts as above, a plurality of wind direction induction bulkheads are provided inside to naturally guide or guide air to each duct. In this regard, Korean Patent Registration No. 10-1521591 (Registration Date: 2015) May 13, 2010) discloses a technology related to a defroster and a crash pad assembly.

According to the prior art, at least one partition wall is formed so that a plurality of pipes are independently provided inside the first central duct, so that uniform air blowing is achieved in a wide area of the central portion of the windshield.

However, the structure of the bulkhead inside the air duct is an undercut that cannot be simultaneously injection-molded in one mold integrally with the air duct, and therefore it is bound to be formed by combining at least two or more parts that physically divide the air duct. It becomes a limiting factor in the structural work of manufacturing.

Due to the above structural limitations, even if two or more parts are combined to form a bulkhead inside the air duct, structurally, the bulkhead itself must be formed in only one part or divided into two or more parts. When combined with each other, there is a problem that a separate coupling structure or an additional coupling means for firmly supporting the partition wall is required.

This problem not only complicates the manufacturing or assembly process in proportion to the number of partition walls or the number of parts, but also increases the production manpower and production time, greatly reducing the productivity of the assembly line, and a coupling structure that contacts the air flowing through exposure on the pipeline. In this case, structural improvement or improvement is required in that the air volume is reduced by generating an irregular eddy current.

In order to overlook the above problems and to maintain the productivity of the assembly line, if the air duct is assembled without a separate coupling structure or additional coupling means that firmly supports the bulkhead, it is strongly transmitted from the vehicle's own vibration or vehicle air conditioning system (HVAC). The structural improvement or improvement as described above needs to be made steadily in the modern automobile industry that demands high sensitivity and high quality in that the partition wall is vibrated by the air and can cause unnecessary noise or even be damaged.

Korean Patent Registration No. 10-1521591 (Registration date: May 13, 2015)

It is an object of the present invention to easily manufacture an air duct and a partition wall that divides the interior into a plurality of pipes through the combination of two divided parts, and is caused by a corresponding coupling structure to firmly support the partition wall. It is to provide an air duct having a vortex prevention coupling structure capable of reducing possible irregular eddy currents.

The object is an air duct formed by combining a first part and a second part to distribute air discharged from the vehicle air conditioner to various points in the vehicle, and is formed by one end of the first and second parts and discharged air. An intake port provided with; A pair of air outlets formed by the other ends of the first and second parts so as to communicate with the air intakes to distribute and deliver air provided to the air intakes to the left and right; A guide plate protruding from one of the first part and the second part to the other so that air flows smoothly through the air supply port to partition the air supply port; And a concave groove formed concavely in the other one of the first part and the second part so as not to interfere with the flow of air and fitted with the end of the guide plate. Achieved by ducts.

At least one fastening hole may be formed in the concave groove portion, and an assembly guiding protrusion may be formed in the guide plate and inserted into the fastening hole to guide an assembly position between the first and second parts.

The guide plate may be formed in a tapered shape whose width becomes narrower toward the concave groove portion, and the concave groove portion may also be formed as a tapered groove corresponding to an end shape of the guide plate.

An elastic layer for attenuating the vibration of the guide plate by flowing air may be interposed between the fitting coupling between the guide plate and the concave groove.

The elastic layer and the part in which the concave groove is formed among the first and second parts may be integrally formed through double injection using a high elastic material and a low elastic material, respectively.

Among the first and second parts, the concave grooved part is formed by first injection of a synthetic resin of PC, ABS, PP, PE or PS-based material, and the elastic layer is silicone, synthetic rubber, PU, foamability It can be integrated by double injection formed by secondary injection of a synthetic resin including at least one of PP, foamable PS and foamed PVC as a material.

The guide plate may have a streamlined cross section that becomes sharper toward the air outlet.

According to the present invention, a guide plate that divides the interior of an air duct consisting of one inlet port and a pair of inlet ports, which are formed by one end and the other end of the first and second parts that are coupled to each other, communicate with the flowing air. The guide plate can be firmly supported even with a strong flow of air due to being fitted into the concave groove that has been formed to reduce interference, and there is an effect of inducing a smooth air flow to the delivery port in a state where irregular eddy currents are reduced.

In addition, the air duct is integrally assembled without difficulty through a simple fitting connection between the guide plate and the concave groove as well as the first and second parts, so excessive increase in work man-hours in the manufacturing or assembly process as in the prior art or productivity of the assembly line Problems such as deterioration can be effectively reduced.

1 is a perspective view as viewed from above of an air duct having a vortex prevention coupling structure according to an embodiment of the present invention.
2 is a perspective view of an air duct having a vortex prevention coupling structure according to an embodiment of the present invention as viewed from below.
3 is an exploded perspective view of FIG. 1.
4 is an exploded perspective view of FIG. 2.
5 is a cross-sectional view and a partial enlarged view taken along line AA of FIG. 1.
6 is a view for showing the shape and operation of the guide plate according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, a description of a function or configuration that is already known will be omitted in order to clarify the gist of the present invention.

1 is a perspective view of an air duct having a vortex preventing coupling structure according to an embodiment of the present invention as viewed from above, and FIG. 2 is a perspective view of an air duct having a vortex preventing coupling structure according to an embodiment of the present invention as viewed from below, FIG. 3 is an exploded perspective view of FIG. 1, FIG. 4 is an exploded perspective view of FIG. 2, FIG. 5 is a cross-sectional view and a partially enlarged view taken along line AA of FIG. 1, and FIG. 6 is a guide plate according to an embodiment of the present invention. It is a drawing to show the shape and action of

In the description and claims of the invention, the upper (upper), lower (lower), left and right (lateral or lateral), front (front, front), rear (fold, rear), etc., which refer to directions, etc. For convenience of explanation, it is determined based on the relative position between the drawings and the configuration, and unless otherwise limited, the front mentioned below is the direction in which the target surface to be illuminated is located, and the opposite direction is the rear. Will be referred to as.

The air duct 100 having a vortex prevention coupling structure according to the present invention is provided with a strong air flow to the delivery ports 120a and 120b in the process of distributing the air discharged from the vehicle air conditioning system (HVAC) to various points in the vehicle. An invention devised to securely support the guide plate 130 for guiding air flow and structurally reduce the occurrence of irregular vortices, thereby minimizing airflow loss, while reducing the number of man-hours in the manufacturing or assembly process to improve the productivity of the assembly line. to be.

The air duct 100 having such a vortex prevention coupling structure is, as an example, based on FIG. 1, a blower unit (not shown) of the vehicle air conditioner is coupled to the intake port 110 disposed at the bottom to increase or decrease the temperature. A crash pad (not shown) in front of the vehicle is coupled to a pair of air vents 120a and 120b disposed at the upper end to receive air and transmit air to the front window glass.

In order to specifically implement the functions or actions as described above, the air duct 100 having a vortex prevention coupling structure according to an embodiment of the present invention includes a wind tunnel that distributes air discharged from the vehicle air conditioning system to various points in the vehicle. As a (wind tunnel) device, as shown in FIGS. 1 to 4, an intake port 110 and an air port 120a formed by combining the first and second parts 10 and 20 divided into arbitrary shapes, 120b) and a guide plate 130, a concave groove 140, and may be configured to include an elastic layer 150.

Here, the first part 10 and the second part 20 are divided into arbitrary shapes in order to easily manufacture the air duct 100 of a complex structure having a partition wall dividing the inner space as in the embodiment of the present invention. As the obtained parts, since these are merely different expressions to distinguish each other, the first and second parts 10 and 20 may be interchanged with each other as shown in the drawings.

According to the embodiment of the present invention, the first and second parts 10 and 20 are respectively injection-molded in separate molds and then fastened by a predetermined coupling means F in the assembly process, thereby forming a vortex prevention coupling structure. It forms the air duct 100 having.

At this time, the predetermined coupling means (F) is disposed spaced apart from each other on the first part 10 and the second part 20, and a plurality of fastening protrusions and fastening holes 142, which exert fastening force, hook-type protrusions and hook holes, bolts And nut balls.

Hereinafter, each of the above-described components will be described in detail.

First, the intake port 110 is a component that directly receives air discharged from a vehicle air conditioner (HVAC, not shown), and the first part 10 and the first part 10 and the first part 10 are mutually coupled as shown in FIGS. 2 This is achieved by forming one end of the part 20 in a single opening shape.

In this case, the shape of the opening of the intake port 110 may be a shape corresponding to the air outlet of the blower unit (not shown) to be coupled.

The intake port 110 may be hermetically coupled to the air outlet of the blower unit with a predetermined sealing means interposed therebetween in order to prevent the outflow of air discharged from the blower unit (not shown).

After the air provided from the blower unit below is introduced into the intake port 110 as above, some of the air is sent out to the lateral opening ends 30a and 30b along the conduit FP branching to both sides, and the rest is a pair to be described later. It is sent out to the feed ports 120a and 120b.

The delivery ports 120a and 120b are components that receive the air provided to the above-described intake port 110, distribute it to the left and right, and send it out. As shown in FIGS. 1 and 3, the first part 10 and the second part 10 The other end of the part 20 is communicated with the intake port 110 at one end side and is formed in the form of a pair of openings separated from each other.

In this case, the shape of the opening of the delivery ports 120a and 120b may be a shape corresponding to an opening formed in a crash pad (not shown) in front of the vehicle to be coupled.

Crash pads (not shown) in a state where a predetermined sealing means is interposed in order to prevent the outflow of air delivered from the blower unit (not shown) and delivered through the intake port 110. It can be hermetically coupled with the opening of the.

The air delivered from the lower intake port 110 is distributed to the pair of air outlets 120a and 120b as described above, and then sent to the front window glass through the opening of the crash pad to perform a dehumidification or defrost function.

The guide plate 130 is a partition wall that is respectively bent from the intake port 110 to a pair of feed ports 120a and 120b and is provided along the longitudinal direction of the connected pipe FP to partition the aforementioned feed ports 120a and 120b. As a component of the shape, as shown in FIGS. 3, 5 and 6, at least one or more per pipe FP is protruded from one of the first part 10 and the second part 20 to the other. Can be done.

At this time, the guide plate 130 is manufactured separately and is not coupled to any one of the first part 10 and the second part 20, but to reduce the work man-hour, the first part 10 and the second part ( It can be made by injection molding integrally with any one of 20).

And the guide plate 130, as shown in the enlarged view of FIG. 6, is made of a cross section of a streamlined shape 130b that becomes sharper toward the air outlets 120a and 120b and is generally symmetrical, and air provided from the intake port 110 It may be disposed at a predetermined angle of attack (AOA) with respect to the flow direction of.

At this time, the predetermined angle of attack (AOA) is an arrangement angle of the guide plate 130 that generates a down wash (DW) that increases the flow rate of air at the pointed tail of the streamlined shape 130b. , In the present invention, it does not generate a vortex in the pointed tail of the streamlined type 130b, and can be variously adjusted within the range of the angle of attack AOA to increase the flow rate of the air at the side of the delivery ports 120a and 120b.

The guide plate 130 as described above has a function of distributing the collision resistance of the air generated on the curved pipe FP by individually guiding the air delivered from the intake port 110 to the space divided by the guide plate 130 In addition, it performs a function of improving the flow rate of air from the air supply ports 120a and 120b through a streamlined structure 130b.

Due to this, the air delivered from the intake port 110 can be delivered to the delivery ports 120a and 120b in a more smooth and strong flow with a reduced loss of air volume under reduced impact resistance.

The concave groove 140 is a component for firmly supporting and fixing the guide plate 130 by being fitted with the end of the guide plate 130 described above when the first and second parts 10 and 20 are coupled, FIG. 4 And, as shown in Figure 5, the other one of the first part 10 and the second part 20, that is, a concave formation in the part 20 opposite to the part 10 on which the guide plate 130 is formed. Can be achieved.

At this time, the concave groove 140 is not separately grooved, and may be formed by injection molding integrally with the other 20 of the first part 10 and the second part 20 in order to reduce the number of working hours.

')를 이루도록 오목하게 형성된 것이 아니라 반대방향으로 오목한 형태('

')로 오목홈부(140)를 형성한 이유는, 흡기구(110)에서 송기구(120a,120b)로 이어지는 관로(FP) 내로 가이드판(130)을 제외하고 별도의 돌출구조가 형성되지 않도록 하기 위함이다.As described above, after being recessed from the surface of the part 20, that is, protruding in the direction in which the guide plate 130 is located, the end of the guide plate 130 and the fitting structure ('

It is not concave to form'), but concave in the opposite direction ('

The reason for forming the concave groove 140 with') is to prevent a separate protruding structure from being formed into the pipe line FP from the intake port 110 to the delivery port 120a, 120b except for the guide plate 130 It is for sake.

That is, the protrusion structure in the pipe FP increases the contact area with the flowing air and generates unintended micro eddy currents, resulting in a loss of air volume, so that such a protruding structure is not structurally formed. The concave groove 140 is formed in a structure that is recessed from the surface of 20).

Therefore, even if the air is strongly sent out from the intake port 110, the sent air is guided to the divided space (FP) through the guide plate 130, which is firmly supported and fixed by the recessed concave groove 140, and a fine vortex is generated. And it is possible to smoothly flow to the air supply ports (120a, 120b) in a state in which the loss of the air volume is minimized.

On the other hand, the guide plate 130 as described above, as shown in Figure 5, is made of a tapered shape (130a) that narrows the width toward the concave groove 140, the concave groove 140 is also such It may be made of a tapered groove corresponding to the end shape of the guide plate 130.

The shape of the guide plate 130 and the concave groove 140 that are complementary to each other as described above is to induce a smooth fitting coupling between the two to improve the convenience of assembling the air duct 100 according to the present invention.

And at least one fastening hole 142 is formed in the concave groove 140, as shown in FIGS. 3 and 5, and the assembly guiding protrusion inserted into the fastening hole 142 described above in the guide plate 130 ( 132) may be formed respectively.

The fastening hole 142 into which the assembly guiding protrusion 132 and the assembly guiding protrusion 132 is inserted is for guiding the correct assembly position when assembling the first and second parts 10 and 20, through which the guide plate When 130 and the concave groove 140 are placed in the correct assembly position, various types of coupling means F arranged along the circumference of the first and second parts 10 and 20 are sequentially fastened. It is possible to quickly and easily assemble between the two parts (10, 20).

And between the fitting between the guide plate 130 and the concave groove 140, the elastic layer 150 for attenuating the vibration (vibration) of the guide plate 130 by the flowing air may be interposed.

At this time, the elastic layer 150 is manufactured in a thin tape shape made of elastic silicone or synthetic rubber as a material and then attached to or adhered to the inside of the concave groove 140 of the injection-molded second part 20. Can be.

However, the elastic layer 150 and the part 20 in which the concave groove 140 is formed among the first and second parts 10 and 20 according to the embodiment of the present invention are double injection using a high elastic material and a low elastic material, respectively. It can be formed integrally through.

The reason why the part 20 in which the elastic layer 150 and the concave groove 140 are formed is integrally injection-molded is that the elastic layer 150 does not require a separate man-hour for attaching the elastic layer 150. By making it firmly installed and fixed at this exact position, it effectively attenuates the vibration of the guide plate 130 by the flowing air, as well as the fastening hole 142 into which the assembly guide protrusion 132 is inserted as described above. This is to prevent air leakage.

For the double injection as described above, the first and second parts 10 and 20 of the first and second parts 10 and 20 in which the concave groove 140 is formed, the part 20, has high strength, chemical resistance, scratch resistance, heat resistance, shock resistance, and moldability, etc. In order to reduce deformation due to shrinkage and manufacture products of accurate standards, PC (Polycarbonate), ABS (Acryloni trile-Butadiene-Styrene) PP (Polypropylene), PE (Polyethylene), PS (Polystyrene), etc. It may be formed by first injection of a synthetic resin including at least one of the resins of.

Here, PC (Polycarbonate) series resin is an amorphous thermoplastic resin, which has high mechanical strength, excellent heat resistance and insulation, is the most impact resistant among thermoplastic resins, and has physical properties that are stable against moisture and temperature changes.

ABS (acrylonitrile-butad iene-styrene) resins have excellent processability, moldability, impact resistance, heat resistance, chemical resistance, and secondary processability such as coloring, and have good compatibility with other resins. It can be mixed with PC (polycarbonate) or the like, and through this, the defects peculiar to the resin can be compensated.

Polypropylene (PP) resins are engineering plastics with excellent chemical resistance, dimensional stability, heat resistance, insulation, abrasion resistance, etc., and with low bending fatigue.Also, they are mixed with other resins and can be used to compensate for defects between synthetic resins.

PE (Polyethylene)-based resins are engineering plastics that have excellent barrier properties to water and water vapor, thermal adhesion, and cold resistance, and have physical properties that are easy to process or mold because there is no significant change in viscosity even with rapid temperature changes.

The part 20 in which the concave groove 140 made of a combination of resins as described above is formed, has the necessary physical properties suitable for the purpose as the unique physical properties of each resin are applied complementarily, and injection molding Through the optimization of injection conditions such as rapid heating and rapid cooling of the process, it can be injected into a product with a clean appearance without a separate painting treatment.

As described above, when the part 20 in which the concave groove 140 is formed is formed by first injecting a synthetic resin such as PC, ABS, PP, PE or PS into the cavity of the molded injection mold, the injection mold or the core is moved. After forming the second cavity (shape corresponding to the elastic layer 150), at least one of silicone, synthetic rubber, PU (polyurethane), foamable PP (polypropylene), foamable PS (polystyrene), and foamable PVC ((Polyvinylchloride)) The elastic layer 150 may be integrated by double-injecting the material including the first injection-molded concave groove 140 to the part 20 formed therein.

The double injection of the elastic layer 150 as described above is rotated by a turntable or a core index method, and the replaced elastic layer 150 forming mold or core is incorporated into the fixed side mold for part molding, and then the material for the elastic layer 150 It can be done by secondary injection.

On the other hand, the part 20 in which the concave groove 140 is formed can be produced by thermocompression molding of SMC (Sheet Molding Compound) material, not an injection molding method, and SMC is a lightweight material that is most likely to be applied to automobiles in recent years. , It is a sheet-shaped fiber-reinforced composite material made by adding a synthetic resin, a fiber reinforcement agent, and a filler such as glass fiber or glass bubble between the carrier films facing each other.

As described above, in the manufacturing method using SMC, a sheet-shaped SMC is inserted into a thermocompression press mold for part manufacturing in which the concave groove 140 is formed and heated and compressed. It is possible, and has the advantage of achieving high strength, light weight and high productivity.

As described above, the part 20 in which the concave groove 140 made of SMC material is formed is a cavity (shape corresponding to the elastic layer 150) formed by moving the press mold or the core while being positioned in the press mold. By injecting a material such as silicone, it may be integrated with the elastic layer 150.

In the above, although specific embodiments of the present invention have been described and illustrated, the present invention is not limited to the described embodiments, and various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have. Therefore, such modifications or variations should not be individually understood from the technical spirit or viewpoint of the present invention, and the modified embodiments should be said to belong to the claims of the present invention.

10: Part 1 20: Part 2
30a, 30b: side opening F: coupling means
100: air duct having a vortex prevention coupling structure
110: intake port 120a, 120b: air port
FP: pipeline 130: guide plate
130a: tapered shape 130b: streamlined
132: assembly guide protrusion AOA: angle of attack
DW: Air downwash 140: concave groove
142: fastening hole 150: elastic layer

Claims (7)

An air duct consisting of a combination of a first part and a second part to distribute air discharged from the vehicle air conditioning system to various points in the vehicle,
An intake port formed by one end of the first and second parts to receive discharged air;
A pair of air outlets formed by the other ends of the first and second parts so as to communicate with the air inlet to distribute and send air provided to the air inlet to the left and right; A guide plate protruding from one of the first part and the second part to the other so as to smoothly flow the air through the delivery port to partition the delivery port; And a concave groove formed concavely in the other one of the first part and the second part so as not to interfere with the flow of air and fitted with the end of the guide plate,
At least one fastening hole is formed in the concave groove,
In the guide plate, an assembly guide protrusion is formed that is inserted into the fastening hole and guides an assembly position between the first and second parts,
The guide plate is made in a tapered shape whose width becomes narrower toward the concave groove,
The concave groove is also made of a tapered groove corresponding to the end shape of the guide plate,
Between the fitting between the guide plate and the concave groove,
An elastic layer for attenuating the vibration of the guide plate by flowing air is interposed,
A part in which the concave groove part is formed among the elastic layer and the first and second parts,
An air duct having a vortex prevention coupling structure, characterized in that it is integrally formed through double injection using a high elastic material and a low elastic material, respectively. delete delete delete delete The method of claim 1,
Among the first and second parts, a part in which the concave groove is formed,
It is formed by first injection of synthetic resin of PC, ABS, PP, PE or PS as a material,
The elastic layer,
An air duct having a vortex prevention coupling structure, characterized in that it is integrated by double injection formed by secondary injection of a synthetic resin including at least one of silicone, synthetic rubber, PU, foamable PP, foamable PS, and foamed PVC as a material. The method of claim 1,
The guide plate,
An air duct having a vortex prevention coupling structure, characterized in that it has a streamlined cross section that becomes sharper toward the air outlet.

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