JP6521426B2 - Support for the front of the cabin - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front support for a cabin, and more particularly to a support for a front cabin provided in an instrument panel.

2. Description of the Related Art Conventionally, various supports have been used to suppress deformation of a cabin when a car collides with a collision body. For example, in the case of a frontal collision, deformation of the cabin can be suppressed by absorbing an impact from a front side frame or the like extending forward of the cabin.
However, when an impact object collides with the side of a car, the impact is input from the outer side in the vehicle width direction of these supports, so that the impact strength is not significantly reduced and reaches the vehicle compartment, causing deformation of the cabin. There was a risk of

  Therefore, as a technique for suppressing the deformation of the cabin against a collision to the side of the automobile, for example, Patent Document 1 connects an instrument panel bracket, a hinge pillar inner and a hinge pillar outer in the vehicle width direction. Reinforcement structures of hinge pillars provided with bolts have been proposed. In the reinforcing structure of the hinge pillar, since the instrument panel bracket is connected to reinforce the hinge pillar, the opening of the hinge pillar is unlikely to occur even when a large collision load is applied to the hinge pillar, thereby suppressing the deformation of the cabin. can do.

Unexamined-Japanese-Patent No. 2012-166741

However, the reinforcing structure of the hinge pillar of Patent Document 1 does not support the front wall of the car that separates the passenger compartment of the car from the engine room, but the front wall of the car is bent backward to move the car forward. There was a risk that the room would deform.
In particular, as shown in FIG. 8, when the collision body K collides with the side of the automobile M and the impact T is input in an oblique direction, the impact T is applied between the side of the automobile M and the cabin C. Since the frame T to be absorbed is small and the impact T is applied directly to the cabin front wall 31, the deformation of the cabin front wall 31 may be increased.

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

According to the present invention, the support for the front of the vehicle compartment has the front wall of the passenger compartment arranged to cover the front of the instrument panel and the top mount panel for mounting the suspension on the front of the front wall of the passenger compartment. In an automobile, a support for a compartment front provided in an instrument panel to suppress deformation of a compartment, the car of the automobile being in contact with a rear surface of a front wall of the compartment facing the compartment side. A front frame provided so as to extend in the width direction, a rear frame provided behind the front frame and provided so as to extend in the vehicle width direction, both ends of which are directly connected to a pair of front pillars, a front skeleton and rear skeleton connected to the annular rear end to the rear skeleton directly connected with tip section at a position corresponding to the width region of the top mount panel are connected directly in part skeleton, from the rear end portion Towards the tip Those comprising a pair of oblique skeleton extending obliquely so as to approach the central portion of the automobile I.

Further, the front frame extends along the rear surface of the front wall of the cabin in the vehicle width direction of the vehicle so as to cross the front wall of the cabin, and extends in the vehicle longitudinal direction outside of the pair of diagonal frames in the vehicle width direction It is formed so as to, a pair of side bone rated for connecting both ends of the end portions and the rear backbone of the front framework can be further obtain Bei.

Further, it is preferable that the tip end portion of the oblique skeleton is connected to a position corresponding to the center of the suspension attached to the top mount panel in the vehicle width direction of the automobile.
Further, it is preferable that the tip end portion of the oblique skeleton is connected to a position corresponding to the upper portion of the top mount panel in the vertical direction of the vehicle .

  According to the present invention, the front end is connected to a position corresponding to the width area of the top mount panel at the front wall of the cabin and the rear end is connected to the front pillar, and the front end is connected to the front end from the rear end Since it obliquely extends toward the central part of the vehicle toward the part, it is possible to provide a support for the front of the vehicle compartment which reliably suppresses the deformation of the front wall of the vehicle compartment.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structure of the motor vehicle provided with the support body for compartment front parts which concerns on Embodiment 1 of this invention. FIG. 2 is a cross-sectional view showing a configuration of a vehicle cabin front wall portion. It is a figure which shows arrangement | positioning of the support body for compartment fronts with respect to a compartment front wall part. It is a figure which shows a mode that a top mount panel is pushed in to a compartment front wall part. FIG. 7 is a view showing a configuration of a support for a vehicle compartment front part according to a second embodiment. FIG. 5 is a cross-sectional view showing a front skeleton fixed to a front wall of a passenger compartment. FIG. 21 is a view showing a support for a vehicle compartment front part according to a modification of the second embodiment. It is a figure which shows a mode that a collision body collides with the side part of a motor vehicle.

Hereinafter, an embodiment of the present invention will be described based on the attached drawings.
Embodiment 1
FIGS. 1 (A) and 1 (B) show the configuration of a vehicle provided with a support for a vehicle compartment front part according to Embodiment 1 of the present invention. This automobile has a pair of front upper frames 1 extending in the front and rear direction on both sides, and a pair of front side frames 2 extending in the front and rear direction is disposed between the pair of front upper frames 1 and a pair of fronts A pair of front pillars 3 is connected to the rear end portion 1 a of the upper frame 1.
A front glass (not shown) is disposed between the pair of front pillars 3 and a cabin front wall 4 is provided below the front glass. A side wall 5 is provided rearward from both side edges of the front side wall 4. A pair of front pillars 3 form a front side of the side wall 5. Further, a top mount panel 6 for mounting a suspension is disposed on the front side of the cabin front wall 4, and a cabin front support 7 is disposed on the rear side of the cabin front wall 4. And the instrument panel 8 is arrange | positioned so that the support body 7 for compartment front parts may be covered from back.
As a result, the engine room E is formed on the front side of the vehicle compartment front wall 4 and the vehicle compartment C is formed on the rear side of the vehicle compartment front wall 4.

A rear end portion 1 a of the front upper frame 1 is connected to an intermediate portion of the front pillar 3. The rear end portion 1a of the front upper frame 1 is formed to expand in the vertical direction, and 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 Extends towards the lower end of the
The front side frame 2 is disposed on the lower side of the front upper frame 1, and the rear end portion is formed to extend to the lower side of the passenger compartment front wall 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 a 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 portion of the suspension, and is disposed on the front side of the vehicle cabin front wall 4 at a corner where the vehicle cabin front wall 4 and the front upper frame 1 are connected. It is joined near the rear end portion 1a. The top mount panel 6 has a cylindrical shape with an opening formed at the lower part, and the upper side of the suspension is accommodated and fixed inside through the opening. In addition, the upper portion of the top mount panel 6 is disposed at a height near the upper edge of the vehicle compartment front wall 4 in the height direction H of the vehicle.

As shown in FIG. 2, the passenger compartment front wall 4 is formed by bending a steel plate, and is disposed to cover the front of the instrument panel 8 by separating the engine compartment E from the passenger compartment C. . The cabin front wall 4 has 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 portion thereof is along the lower edge of the windshield and the opposite side edges thereof are joined to the lower portion 9 of the front pillar. The bulkhead 11 has a housing portion open at the top, and houses a wiper device and the like in the housing portion.

  The toe board 12 is for laying an occupant's foot in the cabin C, and extends from the bottom of the cabin C toward the upper front gradually and then is formed to stand upward There is. 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 front support 7 for the passenger compartment is for supporting the passenger compartment front wall 4 and is disposed in the instrument panel 8, and extends from the pair of front pillars 3 toward the passenger compartment front wall 4 in the central part of the vehicle. It has a pair of diagonal skeletons 15 which extend diagonally so as to approach.
The pair of diagonal skeletons 15 has a tip at a position corresponding to the width region R of the top mount panel 6 in the surface on the vehicle compartment C side of the vehicle cabin front wall 4, that is, a position where the top mount panel 6 is wrapped in the vehicle width direction W The rear end is connected to the lower portion 9 of the front pillar. Then, the pair of diagonal skeletons 15 obliquely extend so as to gradually approach the central portion of the vehicle from the rear end to the front end.

Specifically, as shown in FIG. 3, the tip end of the diagonal frame 15 corresponds to 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. Further, the tip of the diagonal frame 15 is connected to the position P of the bulkhead 11 corresponding to the upper portion of the top mount panel 6 in the vertical direction H of the vehicle. The diagonal frame 15 is directly bonded to the bulkhead 11 and the lower front pillar 9 by bolts or the like.
The instrument panel 8 is an interior member on which instruments such as a speedometer are disposed, and is attached to the support 7 for the front of the passenger compartment.

Next, the operation of this embodiment will be described.
First, as shown in FIG. 8, the collision body K collides with the side portion of the vehicle, and the impact T is input to the vehicle diagonally from the outside of the front upper frame 1. At this time, since there is little frame for absorbing the impact T from the collision body K between the side portion of the car and the compartment C, as shown in FIG. It is deformed to be pushed into the part 4. Here, a top mount panel 6 having high rigidity is disposed in the vicinity of the side of the vehicle. Therefore, when the top mount panel 6 is pushed into the vehicle compartment front wall 4 due to the collision of the collision body K, the vehicle compartment front wall 4 receives a large pressure locally from the top mount panel 6 and starts from that point As a result, there is a possibility that the vehicle compartment front wall 4 is largely bent backward.

  Therefore, as shown in FIGS. 1 (A) and 1 (B), by supporting the position corresponding to the width area R of the top mount panel 6 in the cabin front wall 4 from the cabin C side with the diagonal frame 15, It can suppress that the vehicle interior front wall part 4 is bent backward by the pressure from the top mount panel 6. At this time, the rear end portion of the diagonal frame 15 is directly joined to the front pillar 3 and can strongly support the passenger compartment front wall 4.

Further, as shown in FIG. 2 and FIG. 3, the tip of the diagonal frame 15 is connected to the position P of the vehicle interior 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 in which the diagonal frame 15 is attached to the top mount panel 6, the refraction of the vehicle interior front wall 4 can be reliably suppressed.
Further, the front end portion of the diagonal frame 15 is connected to the height position P corresponding to the upper portion of the top mount panel 6 in the passenger compartment front wall 4. Generally, the top of the top mount panel 6 is a portion of the top mount panel 6 that has high rigidity. For this reason, by supporting the height position P corresponding to the upper portion of the top mount panel 6 with the diagonal frame 15, it is possible to more reliably suppress the refraction of the vehicle interior front wall 4.

  As described above, the vehicle compartment front supporting member 7 disposed in the instrument panel 8 suppresses the refraction of the vehicle compartment front wall 4 and can prevent the deformation of the vehicle compartment C of the vehicle. Furthermore, by forming the casing front support 7 with the diagonal frame 15, it is possible to prevent the deformation of the casing C while securing a space for mounting a device such as an air conditioning and a car navigation system in the instrument panel 8. it can.

  According to the present embodiment, the front end portions 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 cabin front wall portion 4 and the rear end portions of the pair of diagonal skeletons 15 Since it is connected to the front pillar, it is possible to prevent the deformation of the cabin C by suppressing the refraction of the cabin front wall 4.

Embodiment 2
FIG. 5 shows the configuration of the vehicle interior front support 21 according to the second embodiment. In the casing front support 21 of the first embodiment, the pair of diagonal skeletons 22 are arranged instead of the pair of diagonal skeletons 15 in the casing front support 7 according to the first embodiment. The front skeleton 23 connected to the front end and the rear skeleton 24 connected to the rear end of the pair of diagonal skeletons 22 are newly formed and formed annularly.

  The front skeleton 23 is provided to extend between the tips of the pair of diagonal skeletons 22 in the vehicle width direction W along the cabin front wall 4. As shown in FIG. 6, the front frame 23 is provided with a plurality of flanges 25 spaced from each other in the vehicle width direction W. The flanges 25 are used as bulkheads of the front wall 4 of the passenger compartment. The front framework 23 is abutted continuously along the passenger compartment front wall 4 by joining to 11 by spot welding or the like.

The rear frame 24 is disposed rearward of the front frame 23 in the instrument panel 8 and extends in the vehicle width direction W, and both ends thereof are directly joined to the lower front pillar 9 by bolts or the like. The rear frame 24 supports steering and the like, and also has a function as a so-called steering support beam.
Similarly to the pair of diagonal skeletons 15 of the first embodiment, the pair of diagonal skeletons 22 have tip portions connected to the position corresponding to the width region R of the top mount panel 6 in the cabin front wall 4 and the front pillar A 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 vehicle. Here, the pair of diagonal skeletons 22 has a front end joined to both ends of the front skeleton 23 and a rear end joined to the rear skeleton 24. That is, the pair of diagonal skeletons 22 is connected to the cabin 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 portion of the vehicle, the top mount panel 6 is pushed into the cabin front wall 4 with a large pressure, and the cabin front wall 4 is largely bent rearward. There is a fear. Also, in the vicinity of the top mount panel 6, a master bag of a brake having a strong rigidity similar to that of the top mount panel 6 is disposed, and there is also a possibility that this master bag may be pushed to the vehicle interior front wall 4 with a large pressure. is there.

Therefore, the front frame 23 supported by the pair of diagonal frames 22 is provided along the vehicle cabin front wall 4 so as to extend in the vehicle width direction W, thereby pressing from the top mount panel 6 at the vehicle cabin front wall 4 It can support a wide range, including the location of As a result, the pressure received from not only the top mount panel 6 but also the parts having high rigidity such as the master bag disposed around the top mount panel 6 can be supported, and the refraction of the vehicle front wall 4 in the vehicle width direction W It is possible to prevent the deformation of the passenger compartment C of the car by suppressing it in a wide range.
Further, the front frame 23 is provided so as to extend in the vehicle width direction W while in contact with the vehicle compartment front wall 4 without leaving a gap with the vehicle compartment front wall 4. Refraction of the chamber front wall 4 can be reliably suppressed.

  Further, the front skeleton 23, the rear skeleton 24 and the pair of diagonal 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 cabin front wall 4, if the impact T is supported by only one frame, for example, the front frame 23, the front There is a possibility that the partial skeleton 23 may be easily refracted. Therefore, by forming the casing front support 21 in an annular shape, the casing front wall portion 4 can be planarly supported by the entire structure present around the casing front support 21, The passenger compartment front wall 4 can be strongly supported.

  Thus, by providing the annular front support 21 for the cabin front in the instrument panel 8, it is possible to strongly support the front wall 4 and to prevent the cabin C from being deformed. . Furthermore, by forming the casing front support 7 in an annular shape, it is possible to prevent the deformation of the casing C while securing a space in the instrument panel 8 for attaching a device such as an air conditioner and a car navigation system.

  According to the present embodiment, the casing front support 21 has an annular shape, and the tip end portions of the pair of diagonal skeletons 22 correspond to the width region R of the top mount panel 6 in the casing front wall 4. Since it is connected to the position, the vehicle compartment front wall 4 can be strongly supported, and the deformation of the vehicle interior C can be reliably prevented by suppressing the refraction of the vehicle compartment front wall 4.

In the second embodiment, the casing front support 21 may be formed in an annular shape, and is not limited to this shape. For example, as shown in FIG. 7, in the casing front support 21 of the second embodiment, the 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 cabin front wall 4 so as to cross the vehicle cabin front wall 4 in the vehicle width direction W, and both ends thereof are directly joined to the lower front pillar 9 by bolts or the like. There is. Similar to the front frame 23 of the second embodiment, the front frame 26 is provided with a plurality of flanges 25 and is joined to the vehicle interior front wall 4 by spot welding or the like. Thus, the front skeleton 26 is continuously abutted along the cabin front wall 4.

The pair of side frames 27 extend rearward from both ends of the front frame 26 along the lower front pillar 9 and are joined to the rear frame 24 together with the pair of diagonal frames 22.
As described above, by providing the front skeleton 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 in the vehicle width direction W. Refraction of the wall 4 can be reliably suppressed.

In the second embodiment described above, the rear frame 24 also has a function as a steering support beam for supporting steering or the like, but a steering support beam may be provided separately from the rear frame 24.
In the first and second embodiments, the support for the front of the passenger compartment can be made of a material capable of supporting the impact T from the collision body K, such as a steel material and a reinforced resin. For example, by forming the casing front support from reinforced resin, it can be formed integrally with the instrument panel 8, and the configuration in the instrument panel 8 can be simplified.

  1 pair of front upper frames, 1a front upper frame rear end portion, 2 pair of front side frames, 3 pair of front pillars, 4 compartment front wall parts, 5 compartment side wall parts, 6 top mount panels, 7, 21 Support for the front of the cabin, 8 instrument panels, 9 lower front pillars, 10 upper front pillars, 11 bulkheads, 12 toe boards, 15, 22 pairs of diagonal skeletons, 23 front skeletons, 24 rear skeletons, 27 pairs Side frame, 25 flanges, E engine room, C car room, W car width direction, H car vertical direction, R top mount panel width area, L suspension center axis, P top mount panel Position, M Car, K Impactor, T Impact.

Claims (4)

In order to suppress the deformation of the cabin, the front wall of the cabin is arranged to cover the front of the instrument panel and the top mount panel for mounting the suspension is disposed on the front of the front wall of the cabin. A vehicle compartment front support provided in the instrument panel, comprising:
A front frame provided so as to extend in the vehicle width direction of the car while in contact with a rear surface of the front wall portion facing the cabin side of the front wall portion;
A rear frame disposed behind the front frame and extending in the vehicle width direction, and having both ends directly connected to the pair of front pillars;
Connecting said rear framework and the front framework annularly rear end to said rear framework with tip is connected directly to a position corresponding to the width region of the top mount panel in said front framework is connected directly and, cabin front for support and a pair of oblique skeleton extending obliquely from the rear end portion so as to approach the center of the car toward the tip. The front frame extends along the rear surface of the cabin front wall so as to cross the cabin front wall in the vehicle width direction of the vehicle.
The vehicle width direction outer side of the pair of oblique skeleton is formed so as to extend in the longitudinal direction of the vehicle, according to claim to obtain further Bei a pair of side bone rated for connecting both ends of the rear framework and both end portions of said front framework The support body for the front of a compartment according to 1. The front end support according to claim 1 or 2 , wherein the diagonal frame has the tip connected to a position corresponding to the center of the suspension attached to the top mount panel in the vehicle width direction of the vehicle. body. The support for the vehicle compartment front portion according to any one of claims 1 to 3 , wherein the distal end portion of the oblique skeleton is connected to a position corresponding to an upper portion of the top mount panel in the vertical direction of the vehicle.