JP4823033B2 - Vehicle intake duct - Google Patents

Description

  The present invention relates to a vehicle air intake duct, and more particularly, to secure rigidity of an air intake port to maintain an opening area, and to deform the external pressing force to suitably absorb the pressing force. The present invention relates to a vehicle intake duct.

  In many automobiles (vehicles), as shown in FIGS. 8 and 9, an engine EG is mounted in an engine room 12 defined in the front portion of the vehicle body 10. As is well known, the engine EG is driven to rotate by burning an air-fuel mixture obtained by mixing clean air introduced through an air cleaner AC installed in the engine room 12 and fuel supplied from a fuel tank. Therefore, it is indispensable to stably supply the external air particularly during traveling. Therefore, a vehicle intake duct D1 for introducing outside air connected to the air cleaner AC is arranged on the front side of the engine room 12 (a front vehicle body component), and air outside the vehicle is taken in and guided to the air cleaner AC. ing.

  Here, the vehicle air intake duct D1 is generally located near the front center of the vehicle body 10, which is the front side of the engine room 12, and is located on the front side of the engine room 12 to fix the radiator RD (vehicle body component). 14 and an engine hood 16 that closes the engine room 12 so as to be openable and closable, that is, is disposed so as to face a gap S defined therebetween. However, as shown in FIGS. 9 and 11, it is often difficult to secure a large vertical dimension due to the vehicle body shape, and the outer shape of the vehicle intake duct D1 has a low height. It has a flat shape with a suppressed width.

  As shown in FIG. 10, the vehicle air intake duct D1 is molded from a synthetic resin material by a blow molding technique or an injection molding technique, and the main body upper wall 20A and the main body upper wall 20A. The main body of the duct is a duct main body 20 having a main body lower wall 20B opposed to each other at an interval. The duct main body 20 has a bent shape due to the positional relationship between the attachment portion to the radiator support 14 and the arrangement portion of the air cleaner AC, and has an air intake port 22 for taking in air at one end (front end) in the longitudinal direction. The air outlet 28 is opened at the other end (rear end) in the longitudinal direction. Further, attachment pieces 58 and 58 are formed in the front portion of the duct body 20 adjacent to the air intake port 22, and a fitting connection portion 32 is formed in the outer peripheral portion of the air delivery port 28. Accordingly, the duct main body 20 uses the fitting connection portion 32 to connect the rear end portion of the duct main body 20 to the air cleaner AC, and uses attachment means (pins or bolts, etc.) inserted through the attachment pieces 58 and 58. Then, by fixing the front side portion to the upper surface of the radiator support 14, the air intake 22 is disposed between the radiator support 14 and the engine hood 16 so as to be disposed in the engine room 12.

Here, the duct main body 20 described above becomes (1) negative pressure in the duct main body 20 at the time of air intake accompanying the rotational drive of the engine EG, as the thickness is reduced and the outer shape is flattened due to the weight reduction. (2) The main body upper wall 20A and the main body lower wall 20B are easily deformed to the inside of the duct main body 20 due to the flexibility of the duct main body 20 due to the temperature rise in the engine room 12. As described above, when the main body upper wall 20A and the main body lower wall 20B are deformed so as to be close to each other, the air circulation area in the duct main body 20 is reduced. Therefore, for example, as shown in FIGS. 10 and 11, a support rib (support portion) 18 protruding into the duct main body 20 is provided on the main body lower wall 20B, and the main body upper wall 20A is supported by the support rib 18 from the inside. By adopting the configuration, measures are taken to prevent the concave deformation (the duct main body 20 is deformed) of the main body upper wall 20A and the main body lower wall 20B. For example, Patent Document 1 or Patent Document 2 discloses a technique related to such a vehicle intake duct.
JP 2004-276869 A JP 2004-308453 A

  By the way, the engine hood 16 in the vehicle body with improved shock absorbing performance is designed to absorb the shock by deforming in a concave manner when receiving an impact force due to a human collision or the like from above. Accordingly, when the vehicle intake duct D1 disposed immediately below the engine hood 16 in the state of being close to the engine hood 16 is pressed from above by the engine hood 16 that is deformed in a concave manner, the duct main body 20 is connected thereto. It is required to follow and deform in a crushed manner so that the deformation of the engine hood 16 is not hindered. Therefore, in the conventional vehicle intake duct D1, as shown in FIG. 10, when the rigidity of the support rib 18 described above is made as low as possible and the pressing force (external force) by the engine hood 16 is applied from above, FIG. As described above, the support rib 18 itself is subjected to compression deformation in a bending or bending manner.

  However, in the structure in which the support rib 18 is bent or flexibly compressed and deformed, the repulsive force gradually increases as the deformation of the support rib 18 increases, and the deformation mode of the support rib 18 is also different for each duct. It was difficult to adjust the load. Further, in the case of the duct main body 20 formed by the blow molding technique, it is difficult to control the thickness at the time of molding. Therefore, for example, it is difficult to form only the support rib 18 thin so that only the strength of the support rib 18 is weakened. It is. Further, in the case of the duct main body 20 formed based on the injection molding technique, the thickness control of the support rib 18 formed integrally with the main body lower wall 20B can be relatively easily performed. However, since the support ribs 18 are bent or flexibly compressed and deformed, the points where the repulsive force gradually increases as the deformation increases and the deformation modes of the support ribs 18 are not constant are described above. It is the same as the duct body manufactured by blow molding, and still has a problem that it is difficult to adjust the load.

  An object of the present invention is to provide a vehicle intake duct in which when a pressing force is applied to the duct body from the outside, the influence of the support ribs is reduced, and the duct body can be appropriately crushed.

In order to overcome the above-mentioned problems and achieve an intended purpose, a vehicle intake duct according to the invention of claim 1 is provided:
A duct body;
An intake port support member that is detachably disposed in the air intake port of the duct body and has a support means for ensuring the rigidity of the air intake port,
A connecting and fixing means for connecting the duct main body and the intake port supporting member, releasing the connection by deformation of the duct main body and allowing the intake port supporting member to be detached from the duct main body; To do.
Therefore, according to the first aspect of the present invention, when the duct main body and the intake port support member are connected, the duct main body is supported by supporting the air intake port by the support means of the intake port support member. It is possible to stably supply air to the engine by preventing deformation of the engine. In addition, when the duct body is deformed by the pressing force from the outside, the connection between the duct body and the intake port support member is released and the intake port support member is detached from the duct body. The deformation of the duct body can proceed smoothly without being affected.

The gist of the invention described in claim 2 is that the intake port support member includes an urging means for urging the intake port support member in a direction of detaching from the duct body.
Therefore, according to the second aspect of the present invention, when the connection between the duct main body and the intake port support member is released due to deformation of the duct main body, the intake port support member can be quickly detached from the duct main body.

The gist of the invention described in claim 3 is that it comprises holding means for holding the intake port supporting member detached from the duct body by releasing the connection and fixing means.
Therefore, according to the third aspect of the present invention, the intake port support member detached from the duct body is not lost.

According to a fourth aspect of the present invention, the duct body is provided with a connecting portion into which the intake port supporting member can be inserted, and the upper wall of the connecting portion is inclined upward toward the tip of the connecting portion. This is the gist.
Therefore, according to the invention which concerns on Claim 4, when a duct main body receives external force and deform | transforms, an inlet support member becomes easy to detach | leave.

In the invention according to claim 5, the connection fixing means is provided on the duct side engaging portion provided on the inner surface of the duct body and on the outer surface of the intake port supporting member, and is engaged with the duct side engaging portion. The gist of the present invention is to provide a support member engaging portion that can be mated.
Therefore, according to the fifth aspect of the invention, the duct body and the intake port support member can be reliably connected.

The gist of the invention described in claim 6 is that the intake port support member has a bell mouth shape in which the opening area increases as the distance from the duct body increases.
Therefore, according to the sixth aspect of the invention, it is possible to efficiently take in air.

  As described above, according to the vehicle air intake duct according to the present invention, when a pressing force is applied to the duct body from the outside, crushing deformation can appropriately occur.

  Next, a preferred embodiment of the vehicle air intake duct according to the present invention will be described and described below with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected and demonstrated about the member and site | part same as the member and site | part already shown in FIGS. In the following description, the right side of FIG. 2 is the front of the vehicle, and the left side is the rear of the vehicle.

  FIG. 1 is a partially broken perspective view showing a vehicle intake duct D according to the present embodiment attached to the front of the vehicle body (front of the engine room), and FIG. 2 is a cross-sectional view taken along the line II-II in FIG. . The vehicle intake duct D of the present embodiment includes a duct body 20 that forms the main body of the vehicle intake duct D, and an intake port support member 40 that is connected to the longitudinal front end portion (vehicle front side) of the duct body 20. Is provided. The duct body 20 has a bent cylindrical shape composed of a main body upper wall 20A and a main body lower wall 20B facing the main body upper wall 20A at a predetermined interval, and is formed by a known blow molding technique or injection molding technique. Molded. In this embodiment, the duct body 20 is illustrated as being molded by a blow molding technique. As shown in FIG. 2, the duct main body 20 is disposed on the main body upper wall 20 </ b> A so as to be positioned directly below the engine hood 16 in a state of being close to the engine hood 16.

  When the duct body 20 is molded by the blow molding technique, an intermediate molded member (not shown) having a bent cylindrical shape is first molded from a synthetic resin material such as TPO (thermoplastic elastomer), for example. And the main body lower wall 20B are integrally formed. Next, both end portions of the molded intermediate molded member are cut off at a required position, and the air intake port 22 on the front end side and the air outlet port 28 on the rear end side of the duct main body 20 are opened, and this embodiment is concerned. The duct body 20 is formed. In this embodiment, the inner peripheral shape of the air intake port 22 is a substantially trapezoidal shape with a long lower side. In addition, in an Example, an air inflow direction means the direction along the inflow of the air which goes to the air delivery port 28 from the air intake port 22 in the duct main body 20 by the action | operation of engine EG.

  As shown in FIGS. 1 and 2, a connecting portion 24 extending forward is integrally provided at the outer peripheral end of the duct body 20 on the air intake port 22 side so as to communicate with the air intake port 22. ing. On the other hand, a cylindrical fitting connection portion 32 connected to the air inlet of the air cleaner AC is formed on the outer periphery of the air outlet 28 of the duct body 20.

  Here, as shown in FIG. 2, the connecting portion 24 includes a connecting portion upper wall 24a that forms the upper portion and a connecting portion lower wall 24b that forms the lower portion. And it is comprised so that the inlet support member 40 may be inserted between the connection part upper wall 24a and the connection part lower wall 24b, and it may connect with the duct main body 20. FIG. This connection part upper wall 24a is formed in the taper shape which inclined upwards toward the front-end | tip (front) of the connection part 24. As shown in FIG. And the connection part lower wall 24b is formed substantially horizontal, and it is comprised so that a lower surface may contact | abut the upper surface of the radiator support 14 in the state which the duct main body 20 and the intake port support member 40 were connected.

  The intake port support member 40 is configured to open in the front-rear direction. The intake port support member 40 is removably inserted into the connecting portion 24 and connected to the duct body 20 to take in air to be supplied to the engine EG. It is a member that forms the tip of D, and is molded by a known injection molding technique or the like. As shown in FIG. 1, the intake port support member 40 has an outer shape of the intake port support member 40, and an upper wall 42 a and a lower wall that are in close contact with the inner surfaces of the connection portion upper wall 24 a and the connection portion lower wall 24 b of the connection portion 24. The peripheral part 42 formed from the wall 42b and the support means 44 which connect the upper wall 42a and the lower wall 42b, and function as a support pillar are provided. The intake port support member 40 has a shape in which the opening is expanded from the rear to the front. That is, as shown in FIG. 2, the intake port support member 40 is formed in a so-called bell mouth shape in which the opening area gradually increases toward the front.

  And the inner surface shape in the rear-end part of the inlet support member 40 is comprised so that it may substantially correspond with the inner surface shape in the air inlet 22 of the duct main body 20, and it is specifically set as the substantially trapezoid shape with a long lower side. Yes. That is, in a state where the intake port support member 40 is connected to the connecting portion 24, the inner surface of the duct body 20 and the inner surface of the intake port support member are substantially aligned with each other (see FIG. 2).

  As shown in FIG. 1, the support means 44 is provided in the vicinity of the central portion in the lateral direction of the intake port support member 40, and supports the upper wall 42a and the lower wall 42b of the peripheral portion 42 in the vertical direction. It is a member to do. That is, the support means 44 supports the space between the main body upper wall 20A and the main body lower wall 20B of the duct body 20 via the connection part upper wall 24a and the connection part lower wall 24b of the connection part 24, and the duct body 20 (air intake The rigidity of the mouth 22) is ensured. As shown in FIG. 2, the support means 44 is provided over substantially the entire length from the front end portion to the rear end portion of the intake port support member 40.

  Here, as shown in FIG. 2, the rear end of the support means 44 is located rearward from the protruding position of the support member engaging portion 46 (described later) that engages the duct side engaging portion 26 (described later) of the connecting portion 24. Configured to do. In other words, in a state where the intake port support member 40 is connected to the duct body 20, the rear end of the support means 44 is configured to be located rearward from the drilling position of the duct side engagement portion 26. In addition, in the embodiment, the cross-sectional shape of the support means 44 is processed so as to taper forward, so that air can be efficiently introduced into the engine EG.

  As shown in FIG. 1, the vehicle intake duct D is maintained in a connected state between the duct body 20 and the intake port support member 40, and is connected to the duct body 20 and the intake port support member 40 by deformation of the duct body 20. A connection fixing means 30 that allows the state to be released is provided. A plurality of (4 in the embodiment) duct side engaging portions 26 provided on the inner surface of the connecting portion 24 and a plurality (4 in the embodiment) of the connection support means 30 are provided on the outer surface of the intake port support member 40. The support member engaging portion 46 is engageable with the duct side engaging portion 26.

  As shown in FIG. 2, the duct side engaging portion 26 is a through hole formed in the connecting portion upper wall 24a and the connecting portion lower wall 24b of the connecting portion 24, and connects the connecting portion 24 so as to face each other on both the upper and lower sides. Two portions are provided on each of the upper part wall 24a and the lower connecting part wall 24b. The number and position of the duct-side engagement portion 26 are appropriately set so that the latching state of the intake port support member 40 with respect to the duct body 20 is not released due to vibration caused by the operation of the engine EG. The

  Further, as shown in FIG. 2, the support member engaging portion 46 is located at a position corresponding to the duct side engaging portion 26 provided in the connecting portion 24 when the intake port supporting member 40 is connected to the duct body 20, that is, Projecting is provided on the outer surfaces of the upper wall 42a and the lower wall 42b forming the peripheral portion 42. The support member engaging portion 46 and the duct side engaging portion 26 engage with each other, whereby the intake port supporting member 40 is locked to the duct main body 20 and is always connected and fixed to the duct main body 20. It becomes a state. Further, when the engagement between the support member engagement portion 46 and the duct side engagement portion 26 is released, the connection release of the intake port support member 40 from the duct body 20 is allowed.

  Further, as shown in FIG. 1, holding means 50, 50 for fixing the intake port support member 40 to the upper surface of the radiator support 14 are provided on both sides of the intake port support member 40. The holding means 50 includes a mounting portion 56 projecting laterally from the front end portion of the intake port support member 40, a hinge portion 54 provided along the left-right direction at the lower end portion of the mounting portion 56, and the hinge And a fixing portion 52 that is attached to the portion 54 and fixed to the radiator support 14 with attachment means 52a such as a bolt. Accordingly, the intake port support member 40 has a structure in which a rotational movement around the hinge portion 54 is allowed while being fixed to the upper surface of the radiator support 14 by the holding means 50. That is, as shown in FIG. 3, the holding means 50 moves the intake port support member 40 to the upper surface of the radiator support 14 when the engagement state of the connection fixing means 30 is released and the intake port support member 40 is detached from the duct body 20. It has the function to hold. Note that the attachment portions 56 and 56 may be formed separately from the intake port support member 40 when the shape cannot be integrally formed with the intake port support member 40 due to the shape or the like.

  Thus, the intake port support member 40 (the front end of the vehicle intake duct D) is attached to the upper surface of the radiator support 14 by the holding means 50 and 50, and the rear end of the duct body 20 (the rear end of the vehicle intake duct D). Is attached to the air cleaner AC by the above-described fitting connection portion 32 (see FIG. 1). Therefore, the vehicle intake duct D can be stably fixed in the engine room 12.

(Operation of Example)
Next, the operation of the vehicle intake duct according to the embodiment will be described. The intake port support member 40 is inserted in the connection portion 24 in advance, and is connected and fixed to the duct body 20 by the engagement of the duct side engagement portion 26 and the support member engagement portion 46. And Further, in the following description, a state in which no pressing force is applied from the outside to the upper body wall 20A of the duct body 20 is referred to as a normal state, and due to a concave deformation of the engine hood 16 due to an accident or the like, the main body A state in which a pressing force is applied to the upper wall 20A from the outside is referred to as an abnormal state.

  In the normal state, the deformation of the duct main body 20A and the main body lower wall 20B approaching each other due to the negative pressure generated as air flows into the operating engine EG is caused by the intake port support member. This is effectively prevented by the support means 44 included in 40. Further, since the opening shape of the intake port support member 40 is a bell mouth shape, it is efficient to take in air from the outside. Furthermore, since the inner surface of the duct body 20 and the inner surface of the intake port support member 40 are configured to be substantially coincident and have no step, the flow of air flowing through the vehicle intake duct D flows smoothly without being obstructed, Air can be stably supplied to the engine.

  On the other hand, the relationship between the duct body 20 and the intake port support member 40 as the abnormal state progresses will be described with reference to FIG. First, when the engine hood 16 is deformed in a concave manner (see FIG. 4A), the back surface of the engine hood 16 comes into contact with the main body upper wall 20A of the duct main body 20 to apply a pressing force. Due to this pressing force, the contact portion is bent and deformed downward, a downward pressing force is applied to the main body upper wall 20A, and the connecting portion upper wall 24a of the connecting portion 24 located in front of the support means 44 is moved upward. The displacement causes the engagement between the duct side engaging portion 26 and the support member engaging portion 46 to be released (see FIG. 4B).

  This is because the main body lower wall 20B of the duct main body 20 described above is supported by the upper surface of the radiator support 14, and the rear end of the support means 44 is positioned rearward from the drilling position of the duct side engaging portion 26. by. (1) Since the duct main body 20 is supported on the upper surface of the radiator support 14, most of the pressing force applied downward to the main body upper wall 20A becomes a force that deforms the main body upper wall 20A downward, and ( 2) Since the main body upper wall 20A deformed downward is supported in the vertical direction by the support means 44, the rear end of the support means 44 whose back surface of the engine hood 16 is closest to the contact portion with the main body upper wall 20A. As a fulcrum, the connecting portion upper wall 24a of the connecting portion 24 located in front of the contact portion is displaced upward.

  At the same time, a force F that pushes forward acts on the rear end of the support means 44 (see FIG. 4B). This is because, as described above, the connecting portion upper wall 24a has a tapered shape that is inclined upward toward the front end, and the inner surface of the connecting portion upper wall 24a presses the rear end of the support means 44.

  Then, when the engagement between the duct side engaging portion 26 and the supporting member engaging portion 46 is released, the intake port supporting member 40 generated by pressing the inner surface of the connecting portion upper wall 24 a against the rear end of the supporting means 44. By the force F that pushes forward, the intake port support member 40 rotates forward about the hinge portion 54 and is displaced from the duct body 20 (see FIG. 4C). Since the main body upper wall 20A is not supported by the detachment of the intake port support member 40 from the duct body 20, the duct body 20 is crushed and deformed by the deformation of the engine hood 16, and the shock absorption of the engine hood 16 is absorbed. There is an effect that the performance is sufficiently exhibited (see FIG. 4D).

  At this time, since the intake port support member 40 is attached and fixed to the upper surface of the radiator support 14 by the holding means 50, the intake port support member 40 does not fall into a gap in the engine room 12 and be lost. Further, since the intake port support member 40 is detached from the duct main body 20 by a rotational movement around the hinge portion 54, the support member engaging portion 46 protruding from the lower wall 42 b is connected to the duct of the intake port support member 40. There is no hindrance to detachment from the main body 20.

  Further, the intake port support member 40 is detached from the duct body 20 when the connection portion upper wall 24a is deformed by the deformation of the body upper wall 20A of the duct body 20 and the engagement state of the connection fixing means 30 is released. Therefore, it is not damaged because it is not affected by the pressing force from the outside. Further, the duct body 20 reversibly recovers its shape when there is no external pressing force. Therefore, after the cause of the abnormal state is eliminated, the intake port support member 40 is inserted into the connecting portion 24 by the rotational movement around the hinge portion 54 in the connecting portion 24 of the duct body 20 restored to the normal shape. By connecting to the duct main body 20, it is possible to recover the function of allowing air to flow suitably into the engine EG of the vehicle intake duct D.

  Further, the movement of the intake port support member 40 is limited to the rotation around the hinge portion 54 while being fixed to the upper surface of the radiator support 14 by the holding means 50, and the duct body 20 and the intake port support member 40 are Since the connection fixing means 30 is connected and fixed only by being in the engaged state, the connection between the duct body 20 and the intake port support member 40 can be easily performed without taking a complicated procedure. That is, when the duct body 20 is not damaged in an abnormal state or when the duct body 20 is temporarily deformed due to vehicle maintenance or the like, the intake port support member 40 detached from the duct body 20 is reconnected. Thus, the normal use state can be immediately restored.

(First change example)
In the above-described embodiment, the intake port support member 40 is fixed to the radiator support 14 by the holding means 50 in a structure that allows a rotational movement around the hinge portion 54. However, the present invention is not limited to this. For example, as shown in FIG. 5, a torsion spring as an urging unit 60 that constantly urges the intake port support member 40 in the direction of detaching from the duct body 20 to the holding unit 50. You may make it provide. The intake port support member 40 is in a state in which a force for detaching from the duct body 20 is always urged by the urging means 60 so as to be tilted forward toward the upper surface of the radiator support 14 with the hinge portion 54 as the rotation center. It has become.

  That is, as shown in FIG. 3, when the engagement state of the connection fixing means 30 is released, the inlet support member 40 is detached from the duct body 20 by the biasing means 60. Accordingly, the intake port support member 40 is quickly detached from the duct body 20 and displaced to a state where the intake port support member 40 is tilted forward toward the upper surface of the radiator support 14. Furthermore, since the connection part upper wall 24a inclines upward as it goes to the front-end | tip, rotation around the hinge part 54 of the intake port support member 40 is also easy. In other words, when the abnormal state occurs, the intake port support member 40 can be quickly detached from the duct body 20 to achieve a suitable impact absorbing performance of the engine hood 16.

  Here, a torsion spring as the biasing means 60 is employed, but the present invention is not limited to this. For example, the urging unit 60 may be attached to the intake port support member 40 as a separate member and separately from the holding unit 50. In addition, any component other than the torsion spring may be employed as long as the force that causes the intake port support member 40 to be separated from the duct body 20 can be biased.

(Second change example)
Furthermore, in the above-described embodiment, the main body engaging portion 26 and the support member engaging portion 46 of the connection fixing means 30 are engaged, and the duct main body 20 and the intake port support member 40 are connected and fixed. The present invention is not limited to this. For example, the connection strength between the duct main body 20 and the intake port support member 40 and the force F that pushes the intake port support member 40 forward generated when the inner surface of the connection portion upper wall 24a is pressed against the rear end of the support means 44. The intake port support member 40 may control the separation from the duct body 20. The balance between the coupling strength and the pushing force F is, for example, (a) the contact area between the inner surface of the duct body 20 (or the connecting portion 24) and the outer surface of the intake port support member 40, and (b) the surface of each surface. It is adjusted by changing the state, (c) the dimension of the outer shape of the duct body 20 (the connecting portion 24), the dimension of the inner shape of the intake port support member 40, and the like. In addition, in the above-described embodiment, the duct side engaging portion 26 is formed in the connecting portion 24, but a bottomed hole may be provided on the inner surface of the connecting portion 24.

(Third change example)
Furthermore, although the outer surface shape of the intake port support member 40 is formed so as to substantially match the inner surface shape of the connecting portion 24 in the above-described embodiment, the present invention is not limited to this. For example, as shown in FIG. 6, the cross-sectional shape in the direction orthogonal to the air flow direction may be a substantially letter E shape. When the intake port support member 40 is connected to the duct main body 20, the main body upper wall 20 </ b> A and the main body lower wall 20 </ b> B are members that prevent deformation close to each other. The shape or the like is not limited as long as the duct body 20 can be provided with rigidity capable of supporting the wall 20B.

  Further, in the embodiment, the support means 44 is provided over the substantially entire length from the front end portion to the rear end portion in the direction along the air flow direction in the intake port support member 40, and this point is also the same as described above. The reason is not limited. On the other hand, as described above, the supporting means 44 serves as a fulcrum that uses the downward pressing force applied to the main body upper wall 20A in an abnormal state as a force to displace the connecting portion upper wall 24a of the connecting portion 24 upward. Take on. Therefore, the support means 44 gives the duct body 20 rigidity capable of supporting the main body upper wall 20A and the main body lower wall 20B, and if the disposition position is behind the position where the duct side engaging portion 26 is drilled, Thickness and length are not limited.

(Fourth modification)
In addition, in the above-described embodiment, the vehicle intake duct D is attached to the upper surface of the radiator support 14 via the holding means 50 and the air cleaner AC via the fitting connection portion 32, and is arranged in the engine room 12. It is installed. However, the present invention is not limited to this. For example, as shown in FIG. 7, without providing holding means 50, 50 for fixing the intake port support member 40 to the upper surface of the radiator support 14, it extends forward from a portion protruding laterally from the duct body 20. The attachment pieces 58 and 58 may be formed, and the duct body 20 may be fixed to the upper surface of the radiator support 14 with a bolt or the like. Even in this case, the intake port support member 40 is released from the duct body 20 by being disconnected from the connection portion 24 due to the deformation of the duct body 20 due to the pressing force from the outside. Since the main body upper wall 20A is not supported by the support means 44 due to the removal of the intake port support member 40, the deformation of the duct main body 20 proceeds smoothly.

It is a partially broken perspective view which shows the state which attached the vehicle intake duct which concerns on a present Example to the vehicle body front. It is the II-II sectional view taken on the line of FIG. FIG. 3 is a side sectional view showing a state in which the vehicle intake duct according to the embodiment illustrated in FIG. 2 is assembled in the front of the vehicle with a pressing force applied by an engine hood. It is explanatory drawing which shows detachment | leave of the intake port support member by deformation | transformation of a duct main body. It is a sectional side view which shows the state which assembled | attached the vehicle intake duct which concerns on the 1st modification at the vehicle front. The vehicle intake duct which concerns on a 3rd modification is shown, (a) is a partially broken perspective view which shows the state attached to the vehicle body front, (b) is the VIIb-VIIb sectional view taken on the line of (a). It is a partially broken perspective view which showed the state which attached the vehicle intake duct which concerns on the 4th modification to the vehicle body front. It is a perspective view which shows the inside of the engine room in a vehicle. It is the IX-IX sectional view taken on the line of FIG. FIG. 10 is a partially cutaway perspective view of the conventional vehicle intake duct illustrated in FIG. 9. It is a sectional side view which shows the state which assembled | attached the conventional vehicle intake duct illustrated in FIG. 10 in the vehicle front in the state before a deformation | transformation of an engine hood. FIG. 12 is a side cross-sectional view showing a state in which the conventional vehicle intake duct illustrated in FIG. 11 is assembled in front of the vehicle with a pressing force applied by an engine hood.

Explanation of symbols

DESCRIPTION OF SYMBOLS 14 Car body component (Radiator support), 20 Duct body, 22 Air intake 24 Connection part, 24a Upper wall of connection part (upper wall of connection part), 26 Duct side engagement part 30 Connection fixing means, 40 intake port Support member, 44 Support means, 46 Support member engaging portion 50 Holding means, 60 Biasing means

Claims (6)

A duct body;
An intake port support member that is detachably disposed in the air intake port of the duct body and has a support means for ensuring the rigidity of the air intake port,
A connecting and fixing means for connecting the duct main body and the intake port supporting member, releasing the connection by deformation of the duct main body and allowing the intake port supporting member to be detached from the duct main body. Vehicle air intake duct.   2. The vehicle intake duct according to claim 1, wherein the intake port support member includes an urging unit that urges the intake port support member in a direction in which the intake port support member is detached from the duct body.   3. The vehicle intake duct according to claim 1, further comprising holding means for holding the intake port support member detached from the duct main body by releasing the connection fixing means. 4.   The connecting part which can insert the said inlet support member in the said duct main body is provided, The upper wall of this connecting part is comprised so that it may incline upwards as it goes to this connection part front-end | tip. The vehicle air intake duct described in the paragraph.   The connection fixing means includes a duct side engaging portion provided on an inner surface of the duct main body, a support member engaging portion provided on an outer surface of the intake port supporting member and engageable with the duct side engaging portion. The vehicle intake duct according to any one of claims 1 to 4, further comprising:   The vehicle intake duct according to any one of claims 1 to 5, wherein the intake port support member has a bell mouth shape in which an opening area increases as the distance from the duct body increases.

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