JP6908505B2 - Resin radiator support duct - Google Patents

Description

The present invention relates to a resin radiator support duct formed by combining a duct component arranged on one side in the vehicle front-rear direction and a support component arranged on the other side in the vehicle front-rear direction.

Patent Document 1 describes a configuration in which an intake duct is attached to the front side of an engine in an engine room of a vehicle. The intake duct introduces air from the front of the vehicle into the engine. The intake duct is fixed to the upper side of the radiator support, which is a component of the vehicle body, by a pin or bolt mounting means.

International Publication No. 2012/115178

A resin radiator support duct, which is configured by connecting duct parts and support parts separated in the front-rear direction of the vehicle and has an intake flow path for flowing air for supply to the engine, can be considered. The support component has a function as a radiator support by being connected to the vehicle body and supporting the radiator on the lower side. In such a radiator support duct, it is important to increase the fixing force between the duct parts and the support parts at the mating portion of the surfaces located in the middle part in the front-rear direction of the intake flow path from the viewpoint of low vibration and low noise. Is. On the other hand, when the joint positions of the duct component and the support component are arranged at regular intervals in the direction of air flow, the fixing force at the mating portion of the surfaces of the duct component and the support component may become excessively high. As a result, there is room for improvement in terms of improving assembling property, reducing cost, and reducing weight.

An object of the present invention is to improve assembling property, reduce cost, and reduce weight while ensuring a necessary fixing force of a duct part and a mating part of a support part in a resin radiator support duct.

The resin radiator support duct of the present invention is configured by combining a duct component arranged on one side in the vehicle front-rear direction and a support component arranged on the other side in the vehicle front-rear direction, and is formed inside in the vehicle width direction. It has an intake flow path through which air for supply to the engine flows from one end to the other, and both ends of the support component in the vehicle width direction are connected to the vehicle body and below the support component. A resin radiator support duct that supports a radiator, and the duct component is formed so as to project toward the support component from a plurality of positions at both ends in the vertical direction of a long portion extending in the vehicle width direction. The support component has a plurality of holes formed at positions facing the plurality of the claws, and the plurality of the claws and the edge edges of the plurality of holes are locked. As a result, the duct component and the support component are combined, and in the support component, the distance between the plurality of holes at each of the both ends in the vertical direction is narrower at the other end in the vehicle width direction than at one end in the vehicle width direction. In addition, in the duct component, the distance between the plurality of claws at each of the both ends in the vertical direction is narrower at the other end in the vehicle width direction than at one end in the vehicle width direction. be.

According to the resin radiator support duct of the present invention, the distance between the claws and the holes is narrow at the other end in the vehicle width direction, which is the downstream end of the air flow that is greatly affected by the intake pulsation pressure from the engine. Become. On the other hand, at one end in the vehicle width direction, which is the upstream end of the air flow to which the influence of the intake pulsation pressure is small, the distance between the claw portion and the hole portion becomes wide. As a result, it is possible to improve the assembling property, reduce the cost, and reduce the weight while ensuring the necessary fixing force of the mating portion of the duct part and the support part.

It is a perspective view of the resin radiator support duct of the embodiment which concerns on this invention. It is a perspective view of the support component constituting a resin radiator support duct. It is a figure which looked at the support component shown in FIG. 2 from the rear side in the front-rear direction of a vehicle. It is a perspective view of the duct component which comprises the resin radiator support duct. It is a figure which looked at the duct component shown in FIG. 4 from the rear side in the front-rear direction of a vehicle. FIG. 5 is an enlarged cross-sectional view taken along the line AA of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The shapes, materials, numbers, and numerical values described below are examples for explanation and can be appropriately changed according to the specifications of the vehicle including the resin radiator support duct. In the following, the equivalent elements will be described with the same reference numerals in all the drawings. In addition, in the explanation in the text, the codes described earlier shall be used as necessary.

FIG. 1 is a perspective view of the resin radiator support duct 10 of the embodiment. The resin radiator support duct 10 is fixed to the vehicle body in the front portion of the vehicle (not shown) along the vehicle width direction (left-right direction in FIG. 1). The resin radiator support duct 10 supports the radiator 70 on the lower side and constitutes a part of the intake device of the engine (not shown). Hereinafter, the resin radiator support duct 10 will be referred to as a radiator support duct 10.

Specifically, the radiator support duct 10 includes a resin support component 12 arranged on the front side, which is one side in the vehicle front-rear direction, and a resin duct arranged on the rear side, which is the other side in the vehicle front-rear direction. It is configured by combining with the component 40. The radiator support duct 10 internally has an intake flow path 11 through which air for supply to the engine flows from one end (right end in FIG. 1) to the other end (left end in FIG. 1) in the vehicle width direction. Has. The radiator support duct 10 includes an air introduction port (not shown) formed on the front side of one end in the vehicle width direction and an air discharge port 80 formed on the rear side of the other end in the vehicle width direction. The air introduction port is connected to the upstream end of the air flow in the intake flow path 11. The air discharge port 80 is connected to the downstream end of the air flow in the intake flow path 11.

FIG. 2 is a perspective view of the support component 12 constituting the radiator support duct 10. FIG. 3 is a view of the support component 12 as viewed from the rear side in the front-rear direction of the vehicle.

The support component 12 extends downward at both ends of the main body 13 in the vehicle width direction and a long main body 13 formed substantially along the vehicle width direction (horizontal directions of FIGS. 2 and 3). Includes two legs 36, 37 formed in. The main body portion 13 has a front concave surface 14 formed along a substantially vehicle width direction on a rear side surface (front side surface of the paper surface of FIGS. 2 and 3). The front concave surface 14 is combined with the rear concave surface 42 (FIG. 6) formed in the duct component 40 described later to form the intake flow path 11 (FIG. 6).

Through holes (not shown) are formed at a plurality of positions of the two legs 36 and 37, respectively. A bolt 38 is inserted into each through hole, and the two legs 36, 37 are located at both ends in the vehicle width direction of the vehicle body by the bolt 38 and the nut 39 connected to the bolt 38 (shown). (Not shown) or a connecting member (not shown) fixed to the side panel. As a result, both ends of the support component 12 in the vehicle width direction are coupled to the vehicle body.

Further, an insertion portion (not shown) formed in the upper part of the radiator 70 is inserted into a hole (not shown) formed in the lower side of the intermediate portion in the vehicle width direction of the support component 12. As a result, the radiator 70 is supported under the support component 12.

An air introduction port (not shown) is formed on the front side of the lower end portion at one end portion (right end portion in FIGS. 2 and 3) of the main body portion 13 constituting the support component 12 in the vehicle width direction. Further, at one end of the main body 13 in the vehicle width direction, three drain ports 16 are formed on the rear side facing the air introduction port. The drain port 16 is formed below one end of the front concave surface 14 in the vehicle width direction. As will be described later, the air inlet is connected to the upstream end of the intake flow path 11 (FIGS. 1 and 6) in a state where the support component 12 and the duct component 40 (FIGS. 4 and 5) are connected. For this reason, the air inlet is connected between the lower end of the front concave surface 14 at one end in the vehicle width direction and the lower end of the rear concave surface 42 (FIG. 6) of the duct component 40 in the vehicle width direction. An opening (not shown) is formed. In this state, the air introduction port also communicates with the drainage port 16 on the rear side. As a result, when water enters the air introduction port from the front side of the vehicle, the water can be discharged from the drain port 16 to the rear side, so that it is possible to prevent the water from entering the intake flow path 11 on the upper side.

Further, holes 17a and 17b having a rectangular cross section are formed at a plurality of positions in the vehicle width direction at the upper and lower ends of the main body 13 of the support component 12. An edge of the hole 17a is formed on the upper surface of the inner surface of the upper hole 17a, and a protrusion 18a (FIG. 6) protruding downward is formed. On the other hand, on the lower surface of the inner surface of the lower hole 17b, an edge of the hole 17b is formed, and a protrusion 18b (FIG. 6) protruding upward is formed. When the duct component 40 described later is connected to the support component 12, the claw portions 48a and 48b (FIG. 6) of the duct component 40 are locked to the edge edges of the holes 17a and 17b.

Further, as shown in FIGS. 2 and 3, in the support component 12, the distance between the plurality of holes 17a and 17b at both ends in the vertical direction is the other end in the vehicle width direction (the left end in FIGS. 2 and 3). ) Is narrower than one end in the vehicle width direction (right end in FIGS. 2 and 3). For example, at one end of the support component 12 shown in FIG. 3 in the vehicle width direction, the distance between the three holes 17a and 17b at the positions indicated by P1 and P3 at both ends in the vertical direction is L1 or L2. On the other hand, at the other end of the support component 12 shown in FIG. 3 in the vehicle width direction, the distance between the three holes 17a and 17b at the positions indicated by P2 and P4 at both ends in the vertical direction is L3, and one end is provided. It is narrower than any of the intervals L1 and L2. As a result, as will be described later, in the radiator support duct formed by locking the claws 48a and 48b (FIG. 6) to the holes 17a and 17b, the necessary fixing force of the duct parts and the mating parts of the support parts is applied. While ensuring, it is possible to improve the ease of assembly, reduce the cost, and reduce the weight.

FIG. 4 is a perspective view of the duct component 40 constituting the radiator support duct 10. FIG. 5 is a view of the duct component 40 as viewed from the rear side in the front-rear direction of the vehicle. FIG. 6 is an enlarged cross-sectional view taken along the line AA of FIG.

The duct component 40 includes a long portion 41 extending substantially along the vehicle width direction (left-right direction in FIGS. 4 and 5) and an air discharge port 80 which is an opening for air discharge. The elongated portion 41 has a rear concave surface 42 (FIG. 6) formed along a substantially vehicle width direction on the front side surface (back side surface of the paper surface of FIGS. 4 and 5). The rear concave surface 42 forms an intake flow path 11 together with the front concave surface 14 (FIG. 6) formed on the support component 12.

The air discharge port 80 has a tubular shape formed so as to project diagonally downward from the rear side surface of the other end portion (left end portion in FIGS. 4 and 5) of the elongated portion 41 in the vehicle width direction. A duct (not shown) on the air cleaner side is connected to the open end of the air discharge port 80. The air sent from the radiator support duct 10 to the duct on the air cleaner side is supplied to the engine (not shown) via the air cleaner (not shown) and another duct connected to the air cleaner.

The duct component 40 is formed of a resin having a strength lower than that of the resin constituting the support component 12. As a result, the duct component 40 becomes highly moldable in a configuration having a complicated shape. On the other hand, since the support component 12 supports the radiator 70, high strength is required. In this case, since a high-strength resin is used for the support component 12, it is easy to increase the strength. On the other hand, the duct component 40 does not require high strength unlike the support component 12. As a result, the radiator support duct 10 can be partially different in strength depending on the required strength.

Further, claws 48a and 48b are formed at a plurality of positions in the vehicle width direction at the upper and lower ends of the duct component 40, respectively.

The plurality of claw portions 48a and 48b are formed at positions facing the plurality of hole portions 17a and 17b of the support component 12 shown in FIGS. 2 and 3. The claw portions 48a and 48b are formed so as to project from the upper end portion and the lower end portion of the duct component 40 to the front side on the support component 12 side. As shown in FIG. 6, a chevron portion 49a projecting upward is formed on the front side of the upper claw portion 48a. A chevron portion 49b protruding downward is formed on the front side of the lower claw portion 48b. When the duct component 40 and the support component 12 are connected, the plurality of claw portions 48a, 48b of the duct component 40 are inserted into the plurality of holes 17a, 17b of the support component 12. At the same time, the chevron portions 49a and 49b and the protrusions 18a and 18b formed on the inner surfaces of the plurality of holes 17a and 17b in the support component 12 are locked while the plurality of claw portions 48a and 48b are elastically deformed. .. As a result, the duct component 40 and the support component 12 are coupled.

In this state, the front concave surface 14 of the support component 12 and the rear concave surface 42 of the duct component 40 are combined to form a long intake flow path 11. One end of the intake flow path 11, which is the upstream end of the air flow, is connected to the air introduction port. The other end, which is the downstream end of the air flow of the intake flow path 11, is connected to the air discharge port 80. Further, as shown in FIG. 6, in the intermediate portion in the front-rear direction of the intake flow path 11, in the support component 12, the plurality of surfaces B1 and B2 of the duct component 40 are opposed to the plurality of surfaces A1 and A2 facing the duct component 40. The mating portion is formed by the mating. This prevents air leakage from the intake flow path 11.

Further, the distance between the claw portions 48a and 48b of the duct component 40 shown in FIGS. 4 and 5 corresponds to the positions of the holes 17a and 17b of the support component 12 shown in FIGS. It is different in each department. Specifically, in the duct component 40, the distance between the plurality of claws 48a and 48b at both ends in the vertical direction is the other end in the vehicle width direction (the left end in FIGS. 4 and 5) and one end in the vehicle width direction. It is narrower than (the right end of FIGS. 4 and 5). For example, at one end of the duct component 40 shown in FIG. 5 in the vehicle width direction, the distance between the three claws 48a at the upper end indicated by P5 is L4. On the other hand, at the other end of the duct component 40 shown in FIG. 5 in the vehicle width direction, the distance between the two claws 48a at the position indicated by P6 at the upper end is L5, which is narrower than the distance L4 at one end. ..

Further, at one end of the duct component 40 in the vehicle width direction (right end in FIGS. 4 and 5), a plurality of secondary openings for introducing air are provided in a portion where one end of the intake flow path is located inside. The next air introduction port 43 is formed. The secondary air introduction port 43 introduces air into the intake flow path 11 when the air introduction port below the secondary air introduction port 43 is blocked due to submersion of the vehicle or the like.

On the other hand, a first intake noise suppressing portion 44 projecting to the rear side is formed in the middle portion of the duct component 40 in the vehicle width direction. The first intake sound suppression unit 44 is composed of a resonator. A space is formed inside the first intake sound suppressing portion 44, and this space communicates with the intake flow path 11 through a communication passage (not shown) penetrating in the front-rear direction on the rear concave surface 42 (FIG. 6). .. As a result, the first intake sound suppressing unit 44 has a function of suppressing the intake sound. The first intake noise suppressing unit 44 is positioned at the center of the duct component 40 in the vehicle width direction.

On the other hand, in the middle portion of the duct component 40 in the vehicle width direction, two second intake noise suppressing portions 45a and 45b are arranged at positions adjacent to both sides in the vehicle width direction with the first intake noise suppressing portion 44 interposed therebetween. .. The second intake noise suppressing portions 45a and 45b are configured to include a hole having a rectangular cross section formed in the duct component 40 and a rectangular non-woven fabric 46 arranged so as to fit into the hole. The two second intake noise suppressing portions 45a and 45b are located on both sides of the duct component 40 in the vehicle width direction at equal intervals from the center of the duct component 40 in the vehicle width direction. Such second intake sound suppression units 45a and 45b also have a function of suppressing intake noise, similarly to the first intake sound suppression unit 44. The radiator support duct 10 may have only one of the first intake sound suppression unit 44 and the second intake sound suppression units 45a and 45b.

According to the radiator support duct 10 described above, at the other end in the vehicle width direction, which is the downstream end of the air flow that is greatly affected by the intake pulsation pressure from the engine, the claws 48a and 48b and the holes 17a and 17b, respectively. The interval between the two becomes narrower. On the other hand, at one end in the vehicle width direction, which is the upstream end of the air flow to which the influence of the intake pulsation pressure is small, the distance between the claws 48a and 48b and the holes 17a and 17b is widened. As a result, it is possible to improve the assembling property, reduce the cost, and reduce the weight while ensuring the necessary fixing force of the mating portion of the duct component 40 and the support component 12.

Further, the radiator support duct 10 of the embodiment can be used, for example, to form an intake device for an in-line 3-cylinder engine. In such an engine, the intake pulsation in the intake device tends to be large, so that the effect of using the radiator support duct 10 of the embodiment becomes more remarkable.

Although not shown, as the radiator support duct of the comparative example, unlike the embodiments shown in FIGS. 1 to 6, the distances between the plurality of claws at the upper and lower ends of the duct component are made to match at both ends in the vehicle width direction. The configuration is conceivable. At this time, in the comparative example, the spacing between the plurality of holes at the upper and lower ends of the support component is also matched at both ends in the vehicle width direction in accordance with the spacing between the claws of the duct component.

In such a comparative example, in order to secure the necessary fixing force of the mating portion of the duct part and the support part, the number of claws and holes is increased at one end in the vehicle width direction as compared with the case of the embodiment. .. As a result, the assembling property may be deteriorated and the cost and weight may be increased. On the other hand, when the distance between the claws is widened as a whole, the fixing force of the mating portion of the duct component and the support component tends to be low, especially at the other end in the vehicle width direction, which is the downstream end of the air flow. As a result, the surface forming the mating portion is easily deformed by the pulsating pressure of the intake air, and a gap is easily generated in the mating portion. Therefore, for example, sound leakage of the intake sound or vibration is likely to occur.

For example, in the comparative example, when the claws are arranged at equal intervals at a pitch of 50 mm, 28 claws are required for the entire duct component in order to secure the necessary fixing force of the mating portions. On the other hand, in the embodiment, the claws are arranged at the other end in the vehicle width direction at a pitch of 50 mm, and the claws 48a and 48b are arranged at the one end and the intermediate portion in the vehicle width direction at a pitch of 100 to 120 mm. I was able to secure the necessary fixing force of the part. In this case, the number of claws in the entire duct component 40 of the embodiment is 18, which can be reduced as compared with the comparative example. Therefore, it is possible to improve the assembling property and reduce the cost and the weight while securing the necessary fixing force of the mating portion.

In the above description, the case where the duct component 40 is arranged on the rear side of the support component 12 in the vehicle front-rear direction has been described. However, the duct component is arranged on the front side of the support component in the vehicle front-rear direction, and the duct component is connected to the support component. It may be configured to be used. At this time, an air inlet is formed in the duct component on the front side, an air outlet is formed in the support component on the rear side, and the duct on the air cleaner side is connected to the air outlet.

10 Resin radiator support duct, 11 Intake flow path, 12 Support parts, 13 Main body, 14 Front concave surface, 16 Drain port, 17a, 17b hole, 18a, 18b protrusion, 36, 37 Leg, 38 bolt, 39 Nut, 40 Duct parts, 41 Long part, 42 Rear concave surface, 43 Secondary air inlet, 44 1st intake noise suppression part, 45a, 45b 2nd intake noise suppression part, 46 Non-woven fabric, 48a, 48b Claw part , 49a, 49b Yamagata part, 70 radiator, 80 air outlet.

Claims (1)

A duct component arranged on one side in the vehicle front-rear direction and a support component arranged on the other side in the vehicle front-rear direction are combined to form an inside, from one end to the other end in the vehicle width direction. It has an intake flow path through which air for supply to the engine flows, and both ends of the support component in the vehicle width direction are connected to the vehicle body, and a resin radiator support duct that supports the radiator under the support component. There,
The duct component includes a claw portion formed so as to project toward the support component from each of a plurality of positions at both ends in the vertical direction of the elongated portion extending in the vehicle width direction.
The support component has a plurality of holes formed at positions facing the claw portions.
By locking the plurality of claws and the edge edges of the plurality of holes, the duct component and the support component are coupled to each other.
In the support component, the distance between the plurality of holes at each of the both ends in the vertical direction is narrower at the other end in the vehicle width direction than at one end in the vehicle width direction, and in the duct component, the distance between both ends in the vertical direction is narrower. A resin radiator support duct in which the distance between the plurality of claws in each is narrower at the other end in the vehicle width direction than at one end in the vehicle width direction.

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