JP2016165964A - Cabin front part supporting body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cabin front part supporting body that reliably suppress deformation in a cabin front wall part of a vehicle.SOLUTION: The cabin front part supporting body includes a pair of oblique skeletons 15, a tip part of which is connected to a position P corresponding to a width area R of a top mount panel 6 in the cabin front wall part 4, a rear tip part of which is connected to a pair of front pillars 3, and which obliquely extends so as to come close to a center part of the vehicle toward the tip part from the rear tip part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle compartment front support, and more particularly to a vehicle compartment front support provided in an instrument panel.

2. Description of the Related Art Conventionally, various supports are used for suppressing deformation of a passenger compartment when an automobile collides with a collision body. For example, in the case of a frontal collision, a front side frame or the like extending in front of the passenger compartment absorbs the impact, thereby suppressing deformation of the passenger compartment.
However, when a collision object collides with the side part of the automobile, an impact is input from the outside in the vehicle width direction of these supports, so that the impact strength is not greatly reduced and reaches the vehicle compartment, and the vehicle compartment is deformed. There was a risk of inviting.

  Therefore, as a technique for suppressing deformation of the passenger compartment against a collision with a side portion of the automobile, for example, in Patent Document 1, an instrument panel bracket, a hinge pillar inner, and a hinge pillar outer are connected in the vehicle width direction. A reinforcement structure of a hinge pillar provided with a bolt has been proposed. In this hinge pillar reinforcement structure, the instrument panel bracket is connected to reinforce the hinge pillar, so that even if a large collision load is applied to the hinge pillar, it is difficult for the hinge pillar to open, thereby suppressing deformation of the passenger compartment. can do.

JP 2012-166671 A

However, the reinforcement structure of the hinge pillar of Patent Document 1 does not support the front wall portion of the vehicle compartment separating the vehicle compartment and the engine compartment of the automobile, and the vehicle front wall portion is refracted rearward before the hinge pillar. The chamber could be deformed.
In particular, as shown in FIG. 8, when a collision body K collides with the side portion of the automobile M and an impact T is input in an oblique direction, the impact T is applied between the side portion of the automobile M and the passenger compartment C. Since there are few frames to absorb and the impact T is directly applied to the vehicle interior front wall portion 31, there is a possibility that the deformation of the vehicle compartment front wall portion 31 is increased.

  The present invention has been made to solve such conventional problems, and an object of the present invention is to provide a vehicle compartment front support that reliably suppresses deformation of the vehicle compartment front wall. .

  In the vehicle compartment front support according to the present invention, a vehicle compartment front wall is disposed so as to cover the front of the instrument panel, and a top mount panel for attaching a suspension to the front side of the vehicle compartment front wall is disposed. In an automobile, a vehicle compartment front support provided in an instrument panel to suppress deformation of the vehicle compartment, the front end portion of the vehicle front wall portion corresponding to the width region of the top mount panel The rear end portion is connected to the pair of front pillars and is connected to the pair of front pillars, and includes a pair of diagonal skeletons extending obliquely so as to approach the center of the automobile from the rear end portion toward the front end portion.

  Here, a front skeleton that is provided so as to extend in the vehicle width direction of the automobile along the front wall portion of the passenger compartment, and that the vicinity of both ends is connected to the front ends of the pair of diagonal skeletons, and is arranged behind the front skeleton And a rear skeleton provided to extend in the vehicle width direction and connected to the rear end portions of the pair of diagonal skeletons, and the front skeleton, the rear skeleton, and the pair of diagonal skeletons are connected in a ring shape. Is preferred.

  A front skeleton that extends along the vehicle front wall in the vehicle width direction of the vehicle so as to cross the vehicle front wall and is connected to the tip of the pair of diagonal skeletons; A rear skeleton arranged to extend in the vehicle width direction and connected to the rear ends of the pair of diagonal skeletons, and a pair of side skeletons connecting both ends of the front skeleton and both ends of the rear skeleton The front skeleton, the rear skeleton, the pair of side skeletons, and the pair of oblique skeletons may be connected in a ring shape.

Moreover, it is preferable that a front-end | tip part is connected to the position corresponding to the center of the suspension with which the diagonal frame | skeleton was attached to the top mount panel in the vehicle width direction of a motor vehicle.
Moreover, it is preferable that a front-end | tip part is connected to the position corresponding to the upper part of a top mount panel in the up-down direction of a motor vehicle.
Further, it is preferable that the rear end portion of the oblique skeleton is directly joined to the pair of front pillars.

  According to the present invention, the pair of oblique skeletons are connected to the front wall at a position corresponding to the width region of the top mount panel at the front wall portion of the passenger compartment, and the rear end is connected to the front pillar. Since it extends diagonally so that it may approach the center part of a motor vehicle toward a part, it becomes possible to provide the vehicle body front part support body which suppresses a deformation | transformation of the vehicle room front wall part of a motor vehicle reliably.

It is a figure which shows the structure of the motor vehicle provided with the vehicle body front part support body which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the structure of a vehicle compartment front wall part. It is a figure which shows arrangement | positioning of the support body for vehicle compartment front parts with respect to a vehicle compartment front wall part. It is a figure which shows a mode that a top mount panel is pushed in to a vehicle compartment front wall part. It is a figure which shows the structure of the support body for vehicle interior front parts which concerns on Embodiment 2. FIG. It is sectional drawing which shows the front part frame | skeleton fixed to the vehicle interior front wall part. It is a figure which shows the vehicle body front part support body which concerns on the modification of Embodiment 2. FIG. It is a figure which shows a mode that a collision body collides with the side part of a motor vehicle.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
Embodiment 1
1A and 1B show the configuration of an automobile provided with a vehicle compartment front support according to Embodiment 1 of the present invention. This automobile has a pair of front upper frames 1 extending in the front-rear direction on both sides, a pair of front side frames 2 extending in the front-rear direction are disposed between the pair of front upper frames 1, and a pair of front frames. A pair of front pillars 3 are connected to the rear end 1 a of the upper frame 1.
A windshield (not shown) is disposed between the pair of front pillars 3, and a vehicle compartment front wall 4 is provided below the windshield. Further, a vehicle compartment side wall portion 5 is provided rearward from both side edge portions of the vehicle compartment front wall portion 4, and a pair of front pillars 3 constitute the front side of the vehicle compartment side wall portion 5. Further, a top mount panel 6 for attaching a suspension is disposed on the front side of the vehicle compartment front wall 4, and a vehicle compartment front support 7 is disposed on the rear side of the vehicle compartment front wall 4. And the instrument panel 8 is arrange | positioned so that the support body 7 for vehicle interior front parts may be covered from back.
As a result, an engine room E is formed on the front side of the vehicle compartment front wall 4 and a vehicle compartment C is formed on the rear side of the vehicle compartment front wall 4.

The front upper frame 1 has a rear end portion 1 a connected to an intermediate portion of the front pillar 3. The rear end 1a of the front upper frame 1 is formed so as to expand in the vertical direction. The upper side of the rear end 1a extends toward the upper end of the front pillar 3 and the lower side of the rear end 1a is the front pillar 3. It extends toward the lower end of the.
The front side frame 2 is disposed on the lower side of the front upper frame 1, and is formed so that the rear end portion extends to the lower side of the vehicle compartment front wall portion 4.

The front pillar 3 has a front pillar lower portion 9 extending in the vertical direction, and a front pillar upper portion 10 extending obliquely upward and rearward from the upper end portion of the front pillar lower portion 9. The front pillar lower portion 9 is formed wide in the front-rear direction, and constitutes the front side of the vehicle compartment side wall portion 5. The front pillar upper portion 10 is formed along the side edge of the windshield.
The top mount panel 6 supports the upper part of the suspension. The top mount panel 6 is disposed on the front side of the vehicle compartment front wall 4 at a corner where the vehicle compartment front wall 4 and the front upper frame 1 are connected. It is joined in the vicinity of the rear end 1a. The top mount panel 6 has a cylindrical shape with an opening formed in the lower part, and the upper side of the suspension is accommodated through the opening and fixed inside. Further, the upper portion of the top mount panel 6 is disposed at a height position in the vicinity of the upper edge portion of the passenger compartment front wall portion 4 in the height direction H of the automobile.

As shown in FIG. 2, the vehicle compartment front wall portion 4 is formed by bending a steel plate, separates the engine room E and the vehicle compartment C, and is disposed so as to cover the front of the instrument panel 8. . The vehicle interior front wall 4 includes a bulkhead 11 and a toe board 12 disposed below the bulkhead 11.
The bulkhead 11 is disposed on the lower side of the windshield, and the upper part is along the lower edge of the windshield and both side edges are joined to the front pillar lower part 9. The bulkhead 11 has a storage portion with an open top, and stores a wiper device and the like in the storage portion.

  The toe board 12 is for a passenger who gets into the passenger compartment C to put his / her foot on. The toe board 12 extends so as to gradually incline from the bottom of the passenger compartment C toward the upper front, and then rises upward. Yes. The upper edge of the toe board 12 is joined to the lower surface of the bulkhead 11 by spot welding or the like. Further, both side edges of the toe board 12 are joined to the front pillar lower portion 9.

The vehicle compartment front support 7 supports the vehicle compartment front wall 4 and is disposed in the instrument panel 8. The vehicle compartment front support 7 is disposed at the center of the automobile from the pair of front pillars 3 toward the vehicle compartment front wall 4. It has a pair of diagonal skeleton 15 extended diagonally so that it may approach.
The pair of slanted skeletons 15 are at the ends corresponding to the width region R of the top mount panel 6 on the surface on the vehicle compartment C side of the vehicle interior front wall 4, that is, at positions where the top mount panel 6 is wrapped in the vehicle width direction W. Are connected to each other, and the rear end portion is connected to the front pillar lower portion 9. And a pair of diagonal frame | skeleton 15 is diagonally extended so that it may approach the center part of a motor vehicle gradually toward a front-end | tip part from a rear-end part.

Specifically, as shown in FIG. 3, the tip of the oblique skeleton 15 is positioned at the position of the bulkhead 11 corresponding to the central axis L of the suspension attached to the top mount panel 6 in the width region R of the top mount panel 6. Connected to P. The tip of the oblique skeleton 15 is connected to the position P of the bulkhead 11 corresponding to the upper part of the top mount panel 6 in the vertical direction H of the automobile. The oblique skeleton 15 is directly joined to the bulkhead 11 and the front pillar lower portion 9 by bolts or the like.
The instrument panel 8 is an interior member in which instruments such as a speedometer are arranged, and is attached to the vehicle compartment front support 7.

Next, the operation of this embodiment will be described.
First, as shown in FIG. 8, a collision body K collides with a side portion of the automobile, and an impact T is input to the automobile in an oblique direction from the outside of the front upper frame 1. At this time, since there are few frames which absorb the impact T from the collision body K between the side part of the automobile and the passenger compartment C, as shown in FIG. It is deformed so as to be pushed into the part 4. Here, a top mount panel 6 having high rigidity is disposed in the vicinity of the side portion of the automobile. For this reason, when the top mount panel 6 is pushed into the vehicle compartment front wall portion 4 due to the collision of the collision body K, the vehicle compartment front wall portion 4 receives a large pressure locally from the top mount panel 6 and starts from that location. As a result, the vehicle compartment front wall 4 may be greatly refracted rearward.

  Therefore, as shown in FIGS. 1 (A) and 1 (B), by supporting the position corresponding to the width region R of the top mount panel 6 in the vehicle compartment front wall 4 by the oblique skeleton 15 from the vehicle compartment C side, It is possible to prevent the vehicle compartment front wall portion 4 from being refracted rearward by the pressure from the top mount panel 6. At this time, the rear end portion of the oblique skeleton 15 is directly joined to the front pillar 3 and can strongly support the vehicle compartment front wall portion 4.

As shown in FIGS. 2 and 3, the tip of the oblique skeleton 15 is connected to a position P of the vehicle compartment front wall 4 corresponding to the central axis L of the suspension in the width region R of the top mount panel 6. ing. Thus, by supporting the position P corresponding to the central axis L of the suspension attached to the top mount panel 6 with the oblique skeleton 15, it is possible to reliably suppress the refraction of the vehicle interior front wall portion 4.
Further, the front end portion of the oblique skeleton 15 is connected to a height position P corresponding to the upper portion of the top mount panel 6 in the vehicle compartment front wall portion 4. In general, the upper portion of the top mount panel 6 is a portion having a strong rigidity in the top mount panel 6. For this reason, by supporting the height position P corresponding to the upper part of the top mount panel 6 with the oblique skeleton 15, the refraction of the vehicle interior front wall 4 can be more reliably suppressed.

  Thus, the vehicle body front wall support 4 disposed in the instrument panel 8 suppresses the refraction of the vehicle front wall 4 and prevents deformation of the vehicle compartment C of the automobile. Further, by constituting the vehicle compartment front support 7 with the oblique skeleton 15, it is possible to prevent deformation of the vehicle compartment C while securing a space for installing devices such as an air conditioning and a car navigation system in the instrument panel 8. it can.

  According to the present embodiment, the front ends of the pair of diagonal skeletons 15 are connected to the position corresponding to the width region R of the top mount panel 6 in the vehicle compartment front wall 4 and the rear ends of the pair of diagonal skeletons 15 Is connected to the front pillar, so that the refraction of the front wall portion 4 of the passenger compartment can be suppressed and the deformation of the passenger compartment C can be reliably prevented.

Embodiment 2
FIG. 5 shows the configuration of the vehicle compartment front support 21 according to the second embodiment. The vehicle compartment front support member 21 includes a pair of diagonal skeletons 22 in place of the pair of diagonal skeletons 15 in the vehicle compartment front support member 7 of the first embodiment. A front skeleton 23 connected to the front end portion and a rear skeleton 24 connected to the rear end portions of the pair of oblique skeletons 22 are newly provided and formed in an annular shape.

  The front skeleton 23 is provided so as to extend between the front ends of the pair of oblique skeletons 22 in the vehicle width direction W along the vehicle compartment front wall 4. As shown in FIG. 6, the front skeleton 23 is provided with a plurality of flange portions 25 spaced apart from each other in the vehicle width direction W. The flange portions 25 are connected to the bulkhead of the vehicle interior front wall portion 4. The front frame 23 is continuously abutted along the vehicle compartment front wall 4 by being joined to 11 by spot welding or the like.

The rear skeleton 24 is disposed behind the front skeleton 23 in the instrument panel 8 and is provided so as to extend in the vehicle width direction W, and both ends thereof are directly joined to the front pillar lower portion 9 by bolts or the like. The rear skeleton 24 supports a steering and the like, and also has a function as a so-called steering support beam.
The pair of oblique skeletons 22 are connected to the front pillars at positions corresponding to the width regions R of the top mount panel 6 on the front wall portion 4 of the passenger compartment, similarly to the pair of oblique skeletons 15 of the first embodiment. The rear end portion is connected to 3, and extends obliquely from the rear end portion toward the front end portion so as to gradually approach the central portion of the automobile. Here, the pair of oblique skeletons 22 are joined at both ends to the front skeleton 23 and at the rear ends to the rear skeleton 24. That is, the pair of oblique skeletons 22 are connected to the vehicle compartment front wall 4 and the front pillar 3 via the front skeleton 23 and the rear skeleton 24.

Next, the operation of this embodiment will be described.
As shown in FIG. 8, when the collision body K collides with the side part of the automobile, the top mount panel 6 is pushed into the vehicle compartment front wall 4 with a large pressure, and the vehicle compartment front wall 4 is greatly refracted rearward. There is a fear. Further, a brake master bag having a strong rigidity similar to the top mount panel 6 is arranged in the vicinity of the top mount panel 6, and there is a possibility that the master bag is pushed into the vehicle interior front wall portion 4 with a large pressure. is there.

Therefore, the front skeleton 23 supported by the pair of diagonal skeletons 22 is provided so as to extend in the vehicle width direction W along the vehicle compartment front wall portion 4, thereby pressing the vehicle from the top mount panel 6 on the vehicle compartment front wall portion 4. It can support a wide range including the position to be performed. Thereby, it is possible to support the pressure received not only from the top mount panel 6 but also from a part having strong rigidity such as a master bag arranged around the top mount panel 6, and the refraction of the vehicle interior front wall portion 4 in the vehicle width direction W. It can suppress in a wide range and can prevent the deformation | transformation of the compartment C of a motor vehicle.
Further, the front skeleton 23 is provided so as to extend in the vehicle width direction W while being in contact with the vehicle compartment front wall portion 4 without leaving a gap with the vehicle compartment front wall portion 4. Refraction of the front wall portion 4 can be reliably suppressed.

  The front skeleton 23, the rear skeleton 24, and the pair of oblique skeletons 22 are connected in a ring shape. As shown in FIG. 8, when the impact T from the collision body K is directly input to the vehicle compartment front wall 4, if the impact T is supported by only one skeleton, for example, the front skeleton 23, the front The partial skeleton 23 may be easily refracted. Therefore, by forming the vehicle compartment front support 21 in an annular shape, the vehicle compartment front wall 4 can be supported in a planar shape by the entire structure existing around the vehicle compartment front support 21. The vehicle compartment front wall 4 can be strongly supported.

  In this way, by providing the annular vehicle compartment front support 21 in the instrument panel 8, the vehicle compartment front wall 4 can be strongly supported, and deformation of the vehicle compartment C can be prevented. . Furthermore, by forming the vehicle compartment front support 7 in an annular shape, it is possible to prevent deformation of the vehicle compartment C while securing a space for installing devices such as an air conditioner and a car navigation system in the instrument panel 8.

  According to the present embodiment, the vehicle compartment front support 21 has an annular shape, and the front ends of the pair of oblique skeletons 22 correspond to the width region R of the top mount panel 6 in the vehicle compartment front wall 4. Since it is connected to the position, the vehicle compartment front wall portion 4 can be strongly supported, the refraction of the vehicle compartment front wall portion 4 can be suppressed, and the vehicle compartment C can be reliably prevented from being deformed.

In the second embodiment, the vehicle compartment front support 21 need only be formed in an annular shape, and is not limited to this shape. For example, as shown in FIG. 7, in the vehicle compartment front support 21 of the second embodiment, a front skeleton 26 is disposed instead of the front skeleton 23 and a pair of side skeletons 27 are newly provided. be able to.
The front frame 26 extends along the vehicle front wall 4 in the vehicle width direction W so as to cross the vehicle front wall 4, and both ends thereof are directly joined to the front pillar lower part 9 by bolts or the like. Yes. Like the front skeleton 23 of the second embodiment, the front skeleton 26 is provided with a plurality of flange portions 25, and the flange portions 25 are joined to the vehicle interior front wall portion 4 by spot welding or the like. As a result, the front frame 26 is continuously in contact with the vehicle compartment front wall 4.

The pair of side skeletons 27 extend rearward from the both ends of the front skeleton 26 along the lower front pillar 9, and are joined to the rear skeleton 24 together with the pair of oblique skeletons 22.
Thus, by providing the front frame 26 so as to cross the vehicle compartment front wall 4 in the vehicle width direction W, the vehicle compartment front wall 4 can be supported over the vehicle width direction W, and the vehicle compartment front Refraction of the wall portion 4 can be reliably suppressed.

In the second embodiment, the rear skeleton 24 also has a function as a steering support beam for supporting the steering and the like. However, a steering support beam may be provided separately from the rear skeleton 24.
In the first and second embodiments, the vehicle compartment front support can be made of a material capable of supporting the impact T from the collision body K, such as steel and reinforced resin. For example, by configuring the vehicle compartment front support from reinforced resin, it can be formed integrally with the instrument panel 8, and the configuration inside the instrument panel 8 can be simplified.

  DESCRIPTION OF SYMBOLS 1 Pair of front upper frame, 1a Rear end part of front upper frame, 2 Pair of front side frames, 3 Pair of front pillars, 4 Front wall part of vehicle compartment, 5 Side wall part of vehicle compartment, 6 Top mount panel, 7, 21 Front support for vehicle compartment, 8 instrument panel, 9 lower front pillar, 10 upper front pillar, 11 bulkhead, 12 toeboard, 15, 22 pair of diagonal skeleton, 23 front skeleton, 24 rear skeleton, 27 pair Corresponds to side frame, 25 flange, E engine room, C compartment, W car width direction, H car vertical direction, R top mount panel width region, L suspension center axis, P top mount panel Position, M car, K impact body, T impact.

Claims (6)

In an automobile in which a front wall portion of a passenger compartment is arranged so as to cover the front of the instrument panel and a top mount panel for attaching a suspension to the front side of the front wall portion of the passenger compartment is arranged in order to suppress deformation of the passenger compartment. A vehicle front support provided in the instrument panel,
A front end portion is connected to a position corresponding to the width region of the top mount panel in the front wall portion of the passenger compartment, and a rear end portion is connected to a pair of front pillars, from the rear end portion toward the front end portion. A vehicle compartment front support having a pair of oblique skeletons extending obliquely so as to approach the center of the automobile. A front skeleton that is provided so as to extend in the vehicle width direction of the automobile along the front wall portion of the passenger compartment, and that both end portions are connected to the front end portions of the pair of diagonal skeletons;
A rear skeleton that is disposed behind the front skeleton and extends in the vehicle width direction, and is connected to the rear end portions of the pair of diagonal skeletons;
The vehicle body front support according to claim 1, wherein the front skeleton, the rear skeleton, and the pair of oblique skeletons are connected in a ring shape. A front skeleton that extends along the vehicle front wall in the vehicle width direction of the automobile so as to cross the vehicle front wall and is connected to the distal ends of the pair of diagonal skeletons;
A rear skeleton disposed behind the front skeleton and extending in the vehicle width direction and connected to the rear end portions of the pair of diagonal skeletons;
A pair of side skeletons connecting both ends of the front skeleton and both ends of the rear skeleton,
The vehicle body front support according to claim 1, wherein the front skeleton, the rear skeleton, the pair of side skeletons, and the pair of oblique skeletons are connected in a ring shape.   The vehicle according to any one of claims 1 to 3, wherein the oblique skeleton has the tip portion connected to a position corresponding to a center of the suspension attached to the top mount panel in a vehicle width direction of the automobile. Front support for room.   The vehicle body front support according to any one of claims 1 to 4, wherein the oblique skeleton is connected to the front end at a position corresponding to an upper portion of the top mount panel in a vertical direction of the automobile. The vehicle body front portion support according to any one of claims 1 to 5, wherein the oblique skeleton has the rear end portion directly joined to the pair of front pillars.