JPH06144243A - Steering support structure for automobile - Google Patents

Abstract

PURPOSE:To heighten the rigidity of a dash upper part while making the effective use of a front pillar at the side of the dash upper part so suppress the retreat of the dash upper part effectively. CONSTITUTION:One end of a reinforcement 13 extended in the vehicle width direction is connected to a front pillar, and the reinforcement 13 is jointed to a dash upper panel 6 so as to form closed cross section, extended inward of a body, together with the dash upper panel 6. A steering shaft 21 is then supported to the reinforcement 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile steering support structure.

[0002]

2. Description of the Related Art Conventionally, as a steering support structure for an automobile, for example, as disclosed in Japanese Utility Model Laid-Open No. 57-178773, a cowl box having a closed cross section extending in the vehicle width direction is provided on the front side of a vehicle compartment. It is known that the steering shaft is supported by a dash upper portion that constitutes the lower side of the cowl box via a bracket.

[0003]

By the way, the dash upper portion is easily affected by the load from the front at the time of a frontal collision, and depending on the magnitude of the collision load,
The dash upper part may retract. In that case, since the steering shaft is supported by the dash upper part, the steering shaft is also retracted as the dash upper part retracts, and there is a demand for effectively suppressing the dash upper part from retracting. It was

The present invention has been made in view of the above points, and an object of the present invention is to enhance the rigidity of the dash upper portion while effectively utilizing the front pillars located on the sides of the dash upper portion. It is to effectively suppress the retreat of the upper part.

[0005]

In order to achieve the above-mentioned object, the solution means of the invention according to claim 1 is premised on a steering support structure of an automobile in which a steering shaft is supported by a dash upper part. , One end of a reinforcing member extending in the vehicle width direction is connected to at least one front pillar of the left and right front pillars, and the reinforcing member is joined to the dash upper portion and the inside of the vehicle body together with the dash upper portion. It is configured to form a closed cross section extending to.

Further, the solution means taken by the invention according to claim 2 is to specify the reinforcing material according to the invention according to claim 1 and connect one end to at least the front pillar on the driver's seat side of the left and right front pillars. Then, together with the dash upper portion, a closed cross section extending inward of the vehicle body with respect to the steering shaft is formed. Then, the reinforcing member supports the steering shaft.

Further, the solution means taken by the invention according to claim 3 is premised on a steering support structure of an automobile in which a steering shaft is supported by a dash upper part which constitutes a lower side of a cowl box. One end of a reinforcing member extending in the vehicle width direction is connected to at least the driver-side front pillar of the front pillars, and the reinforcing member is joined to the dash upper portion to inward the vehicle body together with the dash upper portion. Form a closed cross section that extends. Then, a pedal bracket for mounting a foot-operated pedal is fixed to the reinforcing member, and the rear portion of the cowl box is partitioned in the vehicle width direction at a corresponding position of the cowl box corresponding to the pedal bracket. It is configured to have a knot.

Further, the solution means taken by the invention according to claim 4 is premised on a steering support structure of an automobile in which a steering shaft is supported by a dash upper portion which constitutes a lower side of a cowl box. At least one of the front pillars, which is closer to the driver's seat, is connected to one end of a reinforcing member extending in the vehicle width direction, and the reinforcing member is joined to the dash upper portion, and the dash upper portion and the dash upper portion together with the steering shaft. A closed cross section extending inward of the vehicle body is formed. Then, in the reinforcing material,
A pedal bracket for supporting the steering shaft and mounting a foot pedal is fixed, and the rear portion of the cowl box is partitioned in the vehicle width direction at a position corresponding to the pedal bracket of the cowl box. It is configured to have a knot.

[0009]

With the above construction, in the invention according to claim 1,
The reinforcing material having one end connected to at least one of the front pillars forms a closed cross section that extends inwardly of the vehicle body together with the dash upper portion, so the dash upper portion, which is easily affected by the load from the front during a frontal collision, The rigidity of the front pillar is increased by effective use of the front pillar, and the influence of the collision load on the dash upper portion is prevented as much as possible to effectively suppress the retreat of the dash upper portion.

Further, according to the second aspect of the invention, the reinforcing material having one end connected to at least the front pillar on the driver's seat side forms a closed cross section extending inward of the vehicle body with respect to the steering shaft together with the dash upper portion, and the reinforcement is formed. Since the steering shaft is supported by the material, the reinforcing material that can increase the rigidity strength of the dash upper part by effectively utilizing the front pillar on the driver's side effectively suppresses the rearward movement of the dash upper part due to a collision load. In addition to
The support rigidity of the steering shaft is increased.

According to the third aspect of the invention, one end of the pedal bracket is connected to the front pillar on the driver's seat side, and the pedal bracket is fixed to the reinforcing member forming a closed cross section together with the dash upper portion on the lower side of the cowl box. Corresponding to the pedal bracket, there is a joint that separates the rear part of the cowl box in the vehicle width direction.Therefore, a reinforcing material and a cowl box that can enhance the rigidity of the dash upper part by effectively utilizing the front pillar on the driver's side The inner rear node prevents the collision load from affecting the dash upper portion, and more effectively suppresses the retreat of the dash upper portion. Moreover, the support rigidity strength of the pedal bracket is effectively increased by the dash upper portion which can further increase the rigidity strength by the reinforcing material and the joint.

Further, in the present invention as defined in claim 4, the steering shaft is supported by a reinforcing member having one end connected to the front pillar on the driver's seat side to form a closed cross section with the dash upper portion on the lower side of the cowl box. While fixing the pedal bracket, since there is a node that partitions the rear part of the cowl box in the vehicle width direction corresponding to this pedal bracket, the rigidity of the dash upper part can be increased by effectively using the front pillar on the driver's side. The stiffener and the rear node in the cowl box that can be increased further prevent the collision load from affecting the dash upper portion, and more effectively suppresses the retreat of the dash upper portion. Moreover,
The dash upper portion, which can be made more rigid by the reinforcing material and the joint, further effectively enhances the supporting rigidity of the steering shaft and the supporting rigidity of the pedal bracket.

[0013]

As described above, according to the automobile steering support structure of the invention of claim 1, the closed cross section extending inward of the vehicle body is formed by effectively utilizing at least one of the front pillars. The reinforcing material that can increase the rigidity strength can effectively prevent the dash upper portion from retreating during a frontal collision.

Further, according to the steering support structure for an automobile in the second aspect of the present invention, the rigidity strength of the dash upper portion is formed by forming a closed cross section extending inward of the vehicle body while effectively utilizing at least the front pillar on the driver's seat side. Can increase
In addition, the reinforcing material that supports the steering shaft can effectively prevent the dash upper portion from retreating in the event of a frontal collision, and can increase the support rigidity strength of the steering shaft.

Further, according to the steering support structure for an automobile in the third aspect of the invention, the reinforcing member for forming a closed cross section extending inward of the vehicle body while effectively utilizing the front pillar on the driver's seat side, and the inside of the cowl box. The joints that divide the rear part in the vehicle width direction can increase the rigidity strength of the dash upper part,
In addition, the reinforcing material that fixes the pedal brackets corresponding to the joints can more effectively suppress the rearward movement of the dash upper portion in the case of a frontal collision, and also effectively increases the support rigidity strength of the pedal brackets. The supporting rigidity strength can be increased.

Further, according to the automobile steering support structure of the invention of claim 4, the reinforcing member for forming a closed cross section extending inward of the vehicle body while effectively utilizing the front pillar on the driver's seat side, and the inside of the cowl box. The rear part of the dash upper part can increase the rigidity and strength of the dash upper part by partitioning it in the vehicle width direction, and the dash upper part retracts at the time of a frontal collision by the reinforcing material that supports the steering shaft and fixes the pedal bracket corresponding to the node Can be more effectively suppressed, and the supporting rigidity strength of the steering shaft and the pedal can both be effectively increased.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

1 and 4 show the front end of the vehicle on the driver's seat side to which the steering support structure according to the embodiment of the present invention is applied. Reference numeral 1 denotes a dash for partitioning a compartment 2 and an engine compartment 3. The dash 1 includes a dash lower panel 4 forming a lower portion and a cowl box 5 forming an upper portion. The cowl box 5 includes a cowl panel 6 which constitutes an upper side, that is, a rear upper surface, an upper surface and a front surface.
And a dash upper panel 7 as a dash upper portion that constitutes the lower side, that is, the lower portion of the rear surface and the lower surface. Further, the cowl box 5 is configured as an outside air introduction passage 5a into the vehicle compartment 2, and a front portion of an upper surface of the cowl panel 6 is opened upward to form an outside air introduction port 5b into the cowl box 5. Have been served. The lower end of the window glass 8 is attached to the upper end of the cowl panel 6 with an adhesive 9.

A vehicle compartment 2 is provided on the side of the dash 1.
A cowl side panel 11 forming a side wall of a front end portion is arranged, and side ends of the cowl panel 6 and the dash upper panel 7 are joined and fixed to the cowl side panel 11. Further, the lower end of the front pillar 12 (only the driver's seat side is shown in the drawing) is integrally joined and fixed to the cowl side panel 11. Front pillar 12 above
One end (outer end) of the reinforcement 13 having a substantially U-shaped cross section as a reinforcing member is provided at a lower end portion of the first bracket 10 having a substantially L-shaped cross section for mounting a steering support member 22 described later. Are bonded and fixed. Although not shown, the reinforcement 13 is of a split type also provided on the passenger side, and extends forward along the cowl side panel 11 to the side end portion of the dash upper panel 7, and then the dash upper. It extends inwardly of the vehicle body along the rear surface of the panel 7. Then, the reinforcement 13 is deployed at a predetermined interval on the vehicle interior 2 side of the dash upper panel 7 so as to cover the lower rear surface and the lower surface of the cowl box 5 from the vehicle interior 2 side, and the dash upper panel 7 An upper end portion and a front end portion are joined and fixed to the side surface of the passenger compartment 2 to form a closed cross section that extends inward with the dash upper panel 7. The other end (inner end) of the reinforcement 13 is connected to the dash upper panel 7
Is located substantially at the center position of the vehicle body, and is joined and fixed to the side surface of the passenger compartment 2 of the dash upper panel 7.

A steering shaft 21 extending through the dash lower panel 4 and extending toward the passenger compartment 2 is disposed on the driver's seat side in the passenger compartment 2. The steering shaft 21 is supported via a second bracket 23 on a steering support member 22 that has an annular cross section and that connects the front pillars 12 in the vehicle width direction.
Further, the steering shaft 21 has a vehicle body front side position corresponding to the lower side of the center portion of the reinforcement 13 in the vehicle width direction with respect to the steering support member 22 (second bracket 23) and extends substantially vertically. Bolts 25, 25 and nuts 26, 26 on the rear surface and the lower surface of the reinforcement 13 through the 3 brackets 24.
It is fastened and fixed by. The end portion of the steering support member 22 is attached to the rear surface of the first bracket 10 while being held by a support member 27 having an annular support portion 27a in the center.

Further, as shown in FIG. 2 and FIG. 3, the steering shaft 21 of the reinforcement 13 is
On the left and right of the corresponding position, a clutch pedal 31 and a brake pedal 32, which are foot-operated pedals, are provided correspondingly downward. The clutch pedal 31 and the brake pedal 32 are of a suspension type that are suspended by substantially plate-shaped pedal brackets 33, 33 for mounting the clutch pedal 31 and the brake pedal 32. Each is swingably supported. The front end of the pedal bracket 33 of the clutch pedal 31 has a bolt 3 protruding from the rear surface of the clutch cylinder 34 arranged in front of the dash lower panel 4 through the dash lower panel 4 toward the passenger compartment 2.
It is fastened and fixed by nuts 36 and 36 which are screwed to the screws 5 and 35. On the other hand, the rear end of the pedal bracket 33 of the clutch pedal 31 is fastened and fixed to the lower surface of the left side of the reinforcement 13 corresponding to the steering shaft 21 with a bolt 37 and a nut 38.

On the other hand, the front end of the pedal bracket 33 of the brake pedal 32 penetrates the dash lower panel 4 from the rear surface of the master back device 41, which is a brake booster arranged in front of the dash lower panel 4, and passes through the passenger compartment 2
The bolts 42, 42 projecting to the side are fastened and fixed by nuts 43, 43 screwed together. On the other hand, the rear end of the pedal bracket 33 of the brake pedal 32 is connected to the steering shaft 21 of the reinforcement 13.
It is fastened and fixed by a bolt 44 and a nut 45 to the lower surface on the right side of the corresponding position.

At the corresponding positions of the cowl box 5 corresponding to the pedal brackets 33, nodes 51, 51 for partitioning the rear portion of the cowl box 5 in the vehicle width direction are provided. The nodes 51 are flat gussets 5
2, the lower part is joined and fixed to the rear and lower parts of the dash upper panel 7 corresponding to the above-mentioned reinforcement 13, and the upper part is joined and fixed to the substantially central part of the upper surface of the cowl panel 6 in front of the lower end of the windshield 8. ing.

Therefore, in the above embodiment, one end is joined and fixed to the front pillar 12 on the driver's side through the first bracket 10 and extends forward along the cowl side panel 11, and then the rear surface of the dash upper panel 7. A clutch pedal, which has a closed cross section extending inward with the dash upper panel 7 and is fastened and fixed to the reinforcement 13, by a reinforcement 13 extending inward according to In the rear portion of the cowl box 5 corresponding to the pedal brackets 33 for mounting the brake pedal 31 and the brake pedal 32, nodes 41, 41 for partitioning the rear portion of the cowl box 5 in the vehicle width direction are provided. The dash upper panel 7 that is easily affected by the A reinforcement 13 to form a closed section together with the upper panel 7, the cowl box 5
Each node 51 (gusset 52) that partitions the inner rear part in the vehicle width direction
The rigidity strength is increased by and, and the influence of the collision load on the dash upper panel 7 can be prevented as much as possible, and the retreat of the dash upper panel 7 can be effectively suppressed.

In addition, in the above embodiment, the steering shaft 21 supported by the steering support member 22 connecting the front pillars 12 via the second bracket 23 has the dash upper panel by the effective use of the front pillar 12 as described above. Since the reinforcement 13 is fastened and fixed to the central portion in the vehicle width direction of the reinforcement 13 through the third bracket 24, the support rigidity of the steering shaft 21 can be increased.

Further, as described above, the supporting rigidity strength of each pedal bracket 33 of the cowl box 5 corresponding to each node 51 for partitioning the rear part of the cowl box 5 in the vehicle width direction,
This can be effectively enhanced in combination with the fastening and fixing to the reinforcement 13 and the supporting rigidity strength of the clutch pedal 31 and the brake pedal 32 can be enhanced.

The above embodiment includes various other modifications. For example, in the above embodiment, the reinforcement 13 is of a split type in which one end is joined and fixed to the lower end portion of the front pillar 12 and the other end is joined and fixed to the dash upper panel 7 substantially at the center of the vehicle body. However, it may be an integral type reinforcement in which both ends are joined and fixed to the lower end portions of the front pillars to be connected between the front pillars and joined and fixed to the dash upper panel. Further, one end is joined and fixed to the lower end of the front pillar and the other end is attached to the dash upper panel 7.
It may be a single reinforcement that is bonded and fixed to the vehicle body substantially at the center position.

Further, in the above embodiment, the steering shaft 21 and the pedal brackets 33 are fastened and fixed to the reinforcement 13, respectively. However, in the construction in which the reinforcement is simply joined and fixed to the dash upper panel, or in the reinforcement. One of the steering shaft and the pedal bracket may be fastened and fixed. In that case, the node that partitions the rear portion of the dash upper panel in the vehicle width direction is applied only when the pedal bracket is configured to be fastened and fixed.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view of a front end portion of a vehicle compartment cut near a steering shaft.

FIG. 2 is a vertical cross-sectional side view of a front end portion of a vehicle compartment cut near a clutch pedal.

FIG. 3 is a vertical cross-sectional side view of a front end portion of a vehicle compartment cut near a brake pedal.

FIG. 4 is a perspective view of a front end of a vehicle passenger compartment of a vehicle.

[Explanation of symbols]

 5 Cowl box 6 Dash upper panel (dash upper part) 12 Front pillar 13 Reinforcement (reinforcement material) 21 Steering shaft 31 Clutch pedal (pedal) 32 Brake pedal (pedal) 33 Pedal bracket 51 Section

Claims (4)

[Claims] 1. A steering support structure for an automobile, wherein a steering shaft is supported by a dash upper portion, wherein at least one of the left and right front pillars is provided with a reinforcing material extending in the vehicle width direction. A steering support structure for an automobile, wherein one end is connected, and the reinforcing material is joined to the dash upper portion to form a closed cross section extending inward of the vehicle body together with the dash upper portion. 2. The reinforcing member has one end connected to at least one of the left and right front pillars on the driver side to form a closed cross section that extends inward of the vehicle body with respect to the steering shaft together with the dash upper portion. The steering support structure for an automobile according to claim 1, wherein a steering shaft is supported by the reinforcing member. 3. A steering support structure for an automobile, wherein a steering shaft is supported by a dash upper portion that constitutes a lower side of a cowl box, and at least a driver side front pillar of the left and right front pillars. Is connected to one end of a reinforcing member extending in the vehicle width direction, the reinforcing member is joined to the dash upper portion to form a closed cross section extending inward of the vehicle body together with the dash upper portion, and A pedal bracket for mounting a foot-operated pedal is fixed to the reinforcing member, and a node that partitions the rear portion of the cowl box in the vehicle width direction is provided at a corresponding position of the cowl box corresponding to the pedal bracket. A steering support structure for an automobile, wherein: 4. A steering support structure for an automobile, wherein a steering shaft is supported by a dash upper portion constituting a lower side of a cowl box, wherein at least a driver side front pillar among left and right front pillars. Is connected to one end of a reinforcing member extending in the vehicle width direction, and the reinforcing member is joined to the dash upper portion to form a closed cross section extending inward of the vehicle body with respect to the steering shaft together with the dash upper portion. The steering shaft is supported by the reinforcing member, and a pedal bracket for mounting a foot-operated pedal is fixed to the reinforcing member, and at a corresponding position of the cowl box corresponding to the pedal bracket, in the cowl box. It features that the rear part of the cowl box is divided in the vehicle width direction. Car steering support structure.