JP2018030428A - Vehicle body structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle body structure which can increase vehicle body strength against a lateral collision while maintaining high arrangement flexibility of an air conditioning duct.SOLUTION: A cross member 20 is provided protruding on an upper surface of a floor panel in a manner such that the cross member 20 protrudes upward further than a floor 16 of a cabin 11, has a hollow structure having an air passage, in which air conditioning air flows, therein, and is disposed between pillars 15R, 15L at both sides. A front wall of the cross member 20 has an introduction hole which is connected with an air conditioning duct of an air conditioner and introduces the air conditioning air into the air passage. A rear wall 22 of the cross member 20 has a slit 33A which discharges the air conditioning air from the interior to the exterior of the air passage.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle body structure of a vehicle having an air conditioner.

  As an air conditioner provided in a vehicle such as an automobile, there is a structure in which air for air conditioning is blown out to the feet of a passenger in a rear seat. Such an air conditioner has an air conditioning duct extending from the front of the vehicle to the vicinity of the rear seat.

  Usually, a reinforcing member (so-called cross member) extending in the vehicle width direction is provided above the floor panel of the vehicle body. This cross member may interfere with the arrangement of the air conditioning duct described above. In the vehicle body structure described in Patent Document 1, a through-hole penetrating the cross member in the front-rear direction is provided, and an air-conditioning duct is arranged in a manner of being inserted through the through-hole.

JP 2011-84086 A

  Here, the vehicle is required to have high strength against side collision. The cross member contributes to an increase in strength against such a side collision. However, since the cross member is provided below the cabin floor, even if the cross member has a higher rigidity, the effect is small in increasing the strength against side collision of the vehicle body (particularly the cabin). Therefore, when the side member is arranged so as to increase the strength against the side collision, the degree of freedom in arranging the air-conditioning duct is likely to be reduced due to an increase in the size of the side member.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a vehicle body structure capable of increasing the vehicle body strength against a side collision while maintaining a high degree of freedom in arrangement of air conditioning ducts. .

  A vehicle body structure for solving the above problem is applied to a vehicle provided with an air conditioner. In the vehicle body structure having a cross member, the cross member protrudes above a floor in a cabin of the vehicle. Projected on the upper surface of the floor panel, and has a hollow structure having an air passage through which air for air conditioning passes, and is built between the pillars on both sides of the vehicle, and the duct of the air conditioner is connected An introduction hole for introducing the air into the air passage and a discharge hole for discharging the air from the inside of the air passage to the outside.

  According to the above configuration, the cross members can support both side walls (specifically, pillars) of the vehicle body from the inside above the floor of the cabin. Therefore, the strength of the vehicle body (particularly, the cabin) against side collision can be suitably increased as compared with the cross member disposed below the cabin floor. Moreover, the interior of the hollow cross member can be used as a duct for guiding air for air conditioning. As a result, the extension position of the air conditioning duct and the discharge position of the air conditioning air around the cross member can be easily offset in the vehicle width direction by using the side member, so that the air conditioning duct can be arranged freely. The degree can be increased.

  In the vehicle body structure, the cross member is disposed in front of the rear seat of the vehicle, and the rear wall of the cross member is a toe of the occupant when the occupant is seated on the rear seat at a normal position. It is preferable to have a concave portion that is recessed toward the front in the front portion.

  According to the above configuration, although the cross member is disposed at the foot of the occupant seated in the rear seat, a space near the toe can be secured, so that a reduction in riding comfort due to the placement of the cross member is suppressed. be able to.

The said vehicle body structure WHEREIN: It is preferable that the said discharge hole is arrange | positioned inside the said recessed part.
According to the said structure, the air for an air conditioning can be sent exactly to a passenger | crew's step.

In the vehicle body structure, the introduction hole is provided in a front wall of the cross member, and the discharge hole is provided in a rear wall of the cross member.
According to the above configuration, the extended position of the air conditioning duct in front of the cross member and the discharge position of the air conditioning air in the rear of the cross member can be easily offset in the vehicle width direction using the side members. . Thus, according to the said structure, since the side member arrange | positioned so that the air conditioning duct may be interrupted | blocked can be utilized as a duct, the freedom degree of arrangement | positioning of the air conditioning duct can be made high.

  In the vehicle body structure, it is preferable that the cross member has a structure in which an upper portion extends in a tubular shape in the vehicle width direction, and the air passage, the introduction hole, and the discharge hole are provided in a lower portion.

  According to the above configuration, since the upper portion of the cross member, that is, a portion that is highly effective in increasing the strength against side collision can be made to act like a stick that is installed between the pillars, the vehicle body strength against side collision Can be high. In addition, a portion (lower portion of the cross member) that is less effective in increasing the strength against side collision can be used as a duct for guiding air for air conditioning.

  In the vehicle body structure, the air passage is defined by an inner surface of the cross member and an upper surface of the floor panel, and the cross member and the floor are formed on a mating surface of the cross member and the floor panel. It is preferable that a seal portion for sealing the gap between the panels is disposed.

  According to the said structure, it can suppress that the air for an air conditioning leaks from the inside of an air path to the exterior unnecessarily.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle body intensity | strength with respect to a side collision can be made high, keeping the arrangement | positioning freedom degree of the duct for air conditioning high.

1 is a schematic configuration diagram of a vehicle to which a vehicle body structure of one embodiment is applied. The rear view which looked at the cross member and its periphery from back. The top view of a cross member and its periphery. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. The disassembled perspective view of a cross member. The schematic block diagram of the vehicle to which the vehicle body structure of other embodiment was applied.

Hereinafter, an embodiment of the vehicle body structure will be described.
As shown in FIGS. 1 and 2, the vehicle 10 includes a floor panel 12 (FIG. 1) that is disposed below the cabin 11 and forms a part of the vehicle body. A cross member 20 as a reinforcing member projects from the upper surface of the floor panel 12. The cross member 20 is installed between the pillars 15R and 15L disposed between the door of the front seat 13 and the door of the rear seat 14 (FIG. 1) on both sides of the vehicle 10. 14 (specifically, below the rear end of the front seat 13) in the vehicle width direction. Further, the cross member 20 protrudes above the floor 16 in the cabin 11 of the vehicle 10 (specifically, a floor mat laid above the floor panel 12).

  As shown in FIGS. 3 and 4, the cross member 20 basically extends in a U-shaped cross section that opens downward. The cross member 20 includes a front wall 21 that extends in the vertical direction, a rear wall 22 that extends in the vertical direction on the rear side of the front wall 21, and an upper wall 23 that connects the front wall 21 and the upper end of the rear wall 22. It has a hollow structure. As shown in FIG. 4, a rib 24 (FIG. 4) is provided inside the cross member 20 and extends substantially parallel to the upper wall 23 in a shape that connects the front wall 21 and the rear wall 22. By providing such ribs 24, the upper part of the cross member 20 has a structure extending in a cylindrical shape with the upper part of the front wall 21, the upper part of the rear wall 22, the upper wall 23, and the ribs 24 as peripheral walls.

  As shown in FIG. 4, a passage (air passage 25) is formed inside the cross member 20 by the inner surface (the rear surface of the front wall 21, the lower surface of the rib 24, the front surface of the rear wall 22) and the upper surface of the floor panel 12. A compartment is formed.

  As shown in FIGS. 3 and 4, the mating surface of the cross member 20 and the floor panel 12 is provided with a seal portion 17 that seals the gap between the cross member 20 and the floor panel 12 along the same surface. ing. Specifically, after the cross member 20 is fixed to the floor panel 12 by welding or the like, a liquid gasket is applied to the gap between the floor panel 12 and the cross member 20, and the liquid gasket is hardened to the seal portion 17. It has become.

  An introduction hole 21A is formed in the front wall 21 of the cross member 20, and an air conditioning duct 18A of the air conditioner 18 is connected to the introduction hole 21A. The air conditioning duct 18 </ b> A is connected to the introduction hole 21 </ b> A of the front wall 21 from the front side of the front seat 13 through the space between the floor 16 and the front seat 13. Air for air conditioning is introduced into the inside (specifically, the air passage 25) of the cross member 20 through the introduction hole 21A and the air conditioning duct 18A.

  As shown in FIGS. 4 and 5, at the lower end of the rear wall 22 of the cross member 20, the occupant C (FIG. 4) is in front of the toe of the occupant C when the occupant C (FIG. 4) is seated at the normal position on the rear seat 14. An opening 22A that communicates the inside (air passage 25) and the outside of the cross member 20 is provided in the portion. The opening 22A is provided in front of the right seating position and in front of the left seating position in the rear seat 14 (see FIG. 3).

  A window 30 is attached to each opening 22A. The window part 30 is formed in the bottomed square cylinder shape. A flange 32 having a shape protruding outward is formed at the rear end of the peripheral wall 31 of the window 30. The bottom wall 33 of the window 30 is provided with a plurality of slits 33A extending in the vertical direction. The window 30 is fitted and fixed to the inside of the cross member 20 through the opening 22A so that the front surface of the flange 32 abuts the rear surface of the peripheral edge of the opening 22A of the cross member 20.

  By attaching the window portions 30 in this manner, the interior of each window portion 30 is recessed toward the front in a portion that is in front of the toes of the occupant C when the occupant C is seated on the rear seat 14 at a regular position. It is a concave part. Further, the slit 33A of the bottom wall 33 of the window portion 30 serves as a discharge hole for discharging air for air conditioning from the inside of the cross member 20 (air passage 25) to the outside.

Hereinafter, the operation by providing the cross member 20 will be described.
As shown in FIGS. 2 to 4, in the vehicle 10 of the present embodiment, both side walls of the vehicle body (in detail) above the floor 16 of the cabin 11 by the cross member 20 installed between the pillars 15R and 15L on both sides. The pillars 15R, 15L) are supported from the cabin 11 inside.

  Also, as shown in FIG. 4, the cross member 20 has a tubular shape with an upper portion extending in the vehicle width direction, so that the cross member 20 has an upper portion of the cross member having a U-shaped cross section. The bending rigidity and torsional rigidity of the upper part of the are increased. As shown in FIG. 2, the upper part of the cross member 20, that is, a part that is highly effective in increasing the strength against side collision, is installed between the pillars 15R and 15L to act like a stick. Can do.

  Furthermore, as shown in FIGS. 2 to 4, since substantially the entire lower part of the cross member 20 is fixed to the floor panel 12, the cross member is compared with a structure in which only both ends in the vehicle width direction are supported. Thus, the cross member 20 can be prevented from being bent or twisted.

  Therefore, according to the vehicle 10 of the present embodiment, the strength of the vehicle body (particularly, the cabin 11) against a side collision can be preferably increased as compared with the cross member 20 disposed below the floor 16 of the cabin 11. it can.

  As shown in FIGS. 3 and 4, in the vehicle 10 of the present embodiment, when the air conditioner 18 operates, air for air conditioning is introduced into the cross member 20 (air passage 25) via the air conditioning duct 18A. Will come to be. The air-conditioning air that has passed through the air passage 25 is blown out into the cabin 11 from the slit 33A (FIG. 4) of the window portion 30. Since the seal portion 17 is provided on the mating surface between the cross member 20 and the floor panel 12, the seal portion 17 can prevent air conditioning air from leaking from the inside of the air passage 25 to the outside.

  Thus, in the vehicle 10 of this embodiment, the inside of the hollow cross member 20 can be used as a duct for guiding air for air conditioning. Therefore, the extension position of the air conditioning duct 18A in front of the cross member 20 and the discharge position of the air conditioning air in the rear of the cross member 20 can be easily offset in the vehicle width direction using the cross member 20. . Therefore, although the cross member 20 is arranged so as to block the air conditioning duct 18A, the degree of freedom of arrangement of the air conditioning duct 18A is increased by utilizing the cross member 20 as a part of the air conditioning duct. be able to.

  Usually, an air conditioner of the type that blows air for air conditioning to the feet of the rear seat is a duct extending from the front of the front seat to the front of the right seating position of the rear seat, and the front seat of the left seat of the rear seat from the front seat. And a duct extending forward. As shown in FIG. 3, in the air conditioner 18 of the present embodiment, the air passage 25 in the cross member 20 allows air for air conditioning to flow in front of the right seating position of the rear seat 14 and in front of the left seating position of the rear seat 14. It can be used as a branch passage that distributes to each other. Therefore, one duct that extends from the front of the front seat 13 to the cross member 20 can be shared. Thereby, since the total extension distance of the air conditioning duct 18A can be shortened, the air conditioner 18 can be reduced in weight and size.

  Further, as shown in FIG. 4, in the rear wall 22 of the cross member 20, when the occupant C is seated on the rear seat 14 at the regular position, a portion that is forward of the toe of the occupant C is recessed forward. A concave portion is formed. Thereby, although the cross member 20 is disposed at the feet of the occupant seated on the rear seat 14, a space near the toes can be secured, so that a reduction in riding comfort due to the placement of the cross member 20 is suppressed. be able to.

  In addition, since the slit 33A through which the air for air conditioning blows out is formed inside the recess (specifically, the bottom wall 33 of the window 30), the air for air conditioning is accurately supplied to the feet of the passenger seated on the rear seat 14. Can send. Further, by forming the slit 33 </ b> A inside the concave portion, the air outlet (slit 33 </ b> A) through which the air for air conditioning blows out can also be disposed in an inconspicuous position in the cabin 11.

As described above, according to the present embodiment, the following effects can be obtained.
(1) The cross member 20 is protruded from the upper surface of the floor panel 12 so as to protrude above the floor 16, and is constructed between the pillars 15R and 15L on both sides with a hollow structure having an air passage 25 therein. . Further, an introduction hole 21A for connecting the air conditioning duct 18A is formed in the front wall 21 of the cross member 20, and air for air conditioning is discharged to the rear wall 22 of the cross member 20 from the inside of the air passage 25 to the outside. The slit 33A was formed. Therefore, the strength of the vehicle body against a side collision can be suitably increased as compared with the cross member 20 disposed below the floor 16 of the cabin 11. In addition, since the cross member 20 disposed so as to block the air conditioning duct 18A can be used as a part of the duct, the degree of freedom in arranging the air conditioning duct 18A can be increased.

  (2) The rear wall 22 of the cross member 20 has a concave portion that is recessed toward the front in the front portion of the toe of the occupant C when the occupant C is seated on the rear seat 14 at the normal position. doing. Thereby, although the cross member 20 is arranged at the foot of the occupant C seated on the rear seat 14, a space near the toe can be secured, so that the ride comfort is reduced due to the arrangement of the cross member 20. Can be suppressed.

(3) Since the slit 33A from which the air-conditioning air blows out is formed inside the recess, the air-conditioning air can be accurately sent to the feet of the passenger C seated on the rear seat 14.
(4) The upper part of the cross member 20 has a cylindrical structure extending in the vehicle width direction, and an air passage 25, an introduction hole 21A, and a slit 33A are provided in the lower part of the cross member 20. As a result, the upper portion of the cross member 20, that is, a portion that is highly effective in increasing the strength against side collision can be made to act as a stiff rod erected between the pillars 15R and 15L. Strength can be increased. In addition, a portion (lower portion of the cross member 20) that is less effective in increasing the strength against side collision can be used as a duct for guiding air for air conditioning.

  (5) The seal portion 17 is provided on the mating surface between the cross member 20 and the floor panel 12. For this reason, the seal portion 17 can suppress the air-conditioning air from being unnecessarily leaked from the inside of the air passage 25 to the outside.

The above embodiment may be modified as follows.
The rib 24 inside the cross member 20 can be omitted.
-Instead of providing the window part 30 in the opening part 22A of the rear wall 22 of the cross member 20, you may connect the duct for an air conditioning extended toward back. In this case, the opening 22A corresponds to the discharge hole.

  In the above embodiment, in the rear wall 22 of the cross member 20, when the occupant C is seated on the rear seat 14 at the regular position, the portion that is in front of the toe of the occupant C is recessed forward. A recess was formed. You may abbreviate | omit the said recessed part by forming the window part 30 in flat form.

A member corresponding to the window portion 30 may be integrally formed with the cross member 20 by pressing or the like.
Instead of curing the liquid gasket to form the seal portion 17, a sheet-like seal portion may be sandwiched between the cross member 20 and the floor panel 12.

A sealing member may be provided on the mating surface between the cross member 20 and the pillar 15R (or the pillar 15L).
In the case where the cross member 20 is formed by sheet metal processing, a gap is easily formed in each part thereof. Therefore, it is desirable to provide a seal member in such a gap. Thereby, unnecessary leakage of air for air conditioning from the inside of the air passage 25 to the outside can be suitably suppressed.

If the unnecessary leakage of air-conditioning air from the inside of the air passage 25 to the outside is suppressed within an allowable range, the seal portion 17 may be omitted.
The formation position of the opening 22A can be arbitrarily changed. Further, the cross member 20 may be provided with only one opening 22A and window 30 or three or more.

  As shown in FIG. 6, in a vehicle having seats arranged in three rows in the front-rear direction, a cross member 41 constructed between pillars 40 arranged between the second row seat 14F and the third row seat 14R The structure according to the cross member 20 of the above embodiment may be used. Specifically, the cross member 41 projects from the upper surface of the floor panel 12 so as to project upward from the floor 16, and an air passage 43 through which air for air conditioning passes is partitioned and formed. An air-conditioning duct 18 </ b> B is connected to the front wall of the cross member 41 to form an introduction hole (not shown) for introducing air-conditioning air into the air passage 43. The rear wall of the cross member 41 has the air passage 43. A discharge hole (not shown) for discharging air for air conditioning from the inside to the outside is formed. In the configuration shown in FIG. 6, the cross member 20 and the air conditioning duct 18A can be omitted. That is, the vehicle body structure of this embodiment can be applied only to the cross member 41.

  When the air conditioning duct extends behind the cross member, an introduction hole may be formed in the rear wall of the cross member and a discharge hole may be formed in the front wall of the cross member.

  -For example, both the introduction hole and the discharge hole are provided on one of the front wall and the rear wall of the cross member, and the formation positions of the introduction hole and the discharge hole can be arbitrarily changed. Even with such a configuration, the extension position of the air conditioning duct and the discharge position of the air conditioning air around the cross member can be easily offset in the vehicle width direction by using the side member. The degree of freedom can be increased.

  DESCRIPTION OF SYMBOLS 10 ... Vehicle, 11 ... Cabin, 12 ... Floor panel, 13 ... Front seat, 14 ... Rear seat, 14F ... Second row seat, 14R ... Third row seat, 15R, 15L, 40 ... Pillar, 16 ... Floor, DESCRIPTION OF SYMBOLS 17 ... Seal part, 18 ... Air conditioner, 18A, 18B ... Air-conditioning duct, 20, 41 ... Cross member, 21 ... Front wall, 21A ... Introduction hole, 22 ... Rear wall, 22A ... Opening part, 23 ... Upper wall, 24 ... rib, 25, 43 ... air passage, 30 ... window, 31 ... peripheral wall, 32 ... flange, 33 ... bottom wall, 33A ... slit.

Claims (6)

In a vehicle body structure having a cross member applied to a vehicle provided with an air conditioner,
The cross member is provided on the upper surface of the floor panel so as to protrude above the floor of the cabin of the vehicle, and has a hollow structure having an air passage through which air for air conditioning passes. It is installed between side pillars, and has an introduction hole for connecting the duct of the air conditioner to introduce the air into the air passage, and a discharge hole for discharging the air from the inside of the air passage to the outside. Car body structure characterized by The vehicle body structure according to claim 1,
The cross member is disposed in front of a rear seat of the vehicle;
The vehicle body characterized in that the rear wall of the cross member has a recessed portion that is recessed toward the front in a portion that is in front of a toe of the passenger when the passenger is seated on the rear seat at a normal position. Construction. The vehicle body structure according to claim 2,
The vehicle body structure characterized in that the discharge hole is disposed inside the recess. The vehicle body structure according to any one of claims 1 to 3,
The introduction hole is provided in a front wall of the cross member;
The vehicle body structure characterized in that the discharge hole is provided in a rear wall of the cross member. The vehicle body structure according to any one of claims 1 to 4,
The cross member has a structure in which an upper portion extends in a cylindrical shape in a vehicle width direction, and the air passage, the introduction hole, and the discharge hole are provided in a lower portion. The vehicle body structure according to any one of claims 1 to 5,
The air passage is defined by an inner surface of the cross member and an upper surface of the floor panel,
A vehicle body structure characterized in that a sealing portion for sealing a gap between the cross member and the floor panel is disposed on a mating surface between the cross member and the floor panel.

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