JPH06219325A - Car body front part structure of automobile - Google Patents

Abstract

PURPOSE:To make an instrument panel reinforce as a holding part of an instrument panel unit without increasing weight of the instrument panel reinforce. CONSTITUTION:Most of parts in the neighbourhood of a dash panel assembled on a front part 10A of a car body 10 of an automobile are divided into three assemblies of a pedal unit sub assembly 12, an air conditioner unit subassembly 14 and an instrument panel unit sub assembly 16, and after each of the sub assemblies is previously assembled, each of the sub assemblies is respectively installed on the car body 10. Additionally, in the instrument panel unit sub assembly 16, an air conditioner main body is not included, and in comparison with a conventional structure, weight of the instrument panel unit subassembly 16 is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body front structure, and more particularly to a vehicle body front structure in which parts near a dash panel for partitioning an engine room and a vehicle compartment are unitized.

[0002]

2. Description of the Related Art Conventionally, in order to facilitate assembly work and reduce man-hours in an assembly line in manufacturing automobiles,
A technique for assembling each part of a vehicle body as a unit is known, and an example thereof is disclosed in Japanese Patent Laid-Open No. 3-253480.

In this vehicle body front structure, as shown in FIG. 12, an engine room 10 of a vehicle body 100 is provided.
The vicinity of the dash panel 104 that divides the vehicle interior 100A from the vehicle interior 0A is divided into a cowl unit 110 and an instrument panel unit 118, and the preassembled cowl unit 110 and instrument panel unit 118 are combined in an assembly line. They are assembled to the vehicle body 100 in sequence. The cowl unit 110 includes at least a brake booster 108, a brake pedal bracket and a brake pedal (not shown) on the cowl member 106, and an instrument panel unit 118.
Has an instrument panel 112, an instrument panel reinforcement not shown, a steering device 114, and an air conditioning unit 116.

[0004]

However, in the vehicle body front structure of this automobile, the weight of the cowl unit 110 and the instrument panel unit 118 is large, and each unit has a large weight when assembled to the vehicle body 100. A pillar for holding each unit is indispensable. Therefore, the weight of each unit increases. In particular, in the instrument panel unit 112, the instrument panel reinforce can be used as the support column, but the instrument panel reinforce is
Since the air conditioning unit 116, which is a heavy object, is fixed, it is necessary to reinforce the strength and rigidity of the instrument panel reinforcement so as to withstand the weight of the air conditioning unit 116, which causes a problem that the weight of the instrument panel reinforcement increases. .

In consideration of the above facts, the present invention provides a vehicle body front structure in which the instrument panel reinforcement can be used as a grip portion of the instrument panel unit without increasing the weight of the instrument panel reinforcement. The purpose is to

[0006]

A vehicle body front structure according to a first aspect of the present invention is a pedal unit having components near a dash panel and a base panel provided with at least pedals and master cylinders. Sub-assembly, air-conditioner unit sub-assembly having at least air conditioner body and cowl wire harness, and instrument panel unit sub-assembly having at least instrument panel reinforcement, instrument panel wire harness, duct, safety pad, and instrument panel mounting part It is characterized in that it is divided into three sub-assemblies, and each sub-assembly is assembled to the vehicle body.

[0007]

According to the vehicle body front structure of the present invention as set forth in claim 1, the air conditioner main body, which is a heavy object, is provided in the air conditioner unit sub-assembly, and is separated from the instrument panel unit sub-assembly. The load applied to is reduced. Accordingly, the instrument panel reinforcement can be used as the grip portion of the instrument panel unit sub-assembly without reinforcing the instrument panel reinforcement, that is, without increasing the weight of the instrument panel reinforcement.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the vehicle body front structure according to the present invention will be described with reference to FIGS.

In the figure, an arrow FR indicates a front direction of the vehicle body, an arrow UP indicates an upward direction of the vehicle body, and an arrow IN indicates a vehicle width inward direction.

As shown in FIG. 1, most of the parts near the dash panel 11 assembled to the front portion 10A of the vehicle body 10 of the automobile are the pedal unit sub-assembly 12, the air conditioner unit sub-assembly 14, and the instrument panel. The sub-assembly is divided into three sub-assemblies including the unit sub-assembly 16, and each sub-assembly is assembled in advance and then assembled to the vehicle body 10 for each sub-assembly.

As shown in FIG. 7, the dash panel 11 of the vehicle body 10 is provided with a pedal unit sub-assembly mounting hole 74 that connects the engine compartment and the vehicle compartment. A cowl 76 extending in the vehicle width direction is provided on the upper portion of the dash panel 11, and a cowl reinforcement 77 is provided on the rear side of the cowl 76. A dash outer silencer 78 is attached to the front surface of the dash panel 11.
A dash inner silencer 80 is attached to the rear surface of the No. 1.

As shown in FIGS. 2 and 3, the pedal unit sub-assembly 12 has a base panel 18, and an outer silencer 20 is bonded to the surface of the base panel 18 on the engine room side. A brake master cylinder 22 and a clutch master cylinder 24 are attached to the side of the base panel 18 to which the outer silencer 20 is attached.

On the other hand, on the surface of the base panel 18 facing the passenger compartment, an accelerator cable bracket 34, a bracket 28 on which the brake pedal 26 is swingably supported, and a clutch pedal 30 are swingably supported. Bracket 3
2 and are attached. A steering support bracket 36 is installed on the bracket 28 and the bracket 32.

An inner silencer 38 is attached to the surface of the base panel 18 facing the passenger compartment. The inner silencer 38 includes a leg portion 28 of the bracket 28.
A slit 40 is formed at a portion corresponding to A and the brake master cylinder 22, the leg portion 32A of the bracket 32, the clutch master cylinder 24, and the neck portion 34A of the accelerator cable bracket 34. Therefore, after the bracket 28, the bracket 32, the brake master cylinder 22, the clutch master cylinder 24, the accelerator cable bracket 34, and the accelerator cable are attached to the base panel 18, the inner silencer 38 is attached to the surface of the base panel 18 facing the passenger compartment. It can be assembled.

As shown in FIGS. 4 and 5, the air conditioner unit sub-assembly 14 has an air conditioner body 42, and a computer mounting bracket 44 is fixed to a side portion 42A of the air conditioner body 42. A microcomputer 48 including a plurality of boards 46 is fixed to the computer mounting bracket 44. A cowl wire harness 50 is attached to the air conditioner unit sub-assembly 14.

As shown in FIG. 4, the cowl wire harness 50 is attached to the air conditioner main body 42 by a clamp 52, and each connector 50A is connected to each board 46.

As shown in FIG. 6, the instrument panel unit sub-assembly 16 includes an instrument panel reinforcement 54. A pair of braces 56 is attached downward at a substantially central portion of the instrument panel reinforcement 54 in the vehicle width direction. In addition, the instrument panel reinforce 54,
An instrument panel 58 having a safety pad 58A attached to the surface thereof and a duct 59 are attached to the instrument panel 58, and an instrument panel wire harness 60 is attached to the instrument panel 58.

An instrument panel 58 is assembled with an airbag 62 for a passenger seat, meters 64 as instrument panel mounting parts, a grab door 66, a radio 68, and an instrument panel center console section 70 having heater control sections. ing.

Next, a procedure for assembling the front portion 10A of the vehicle body 10 of the automobile of this embodiment will be described.

First, as shown in FIG. 1, the pedal unit sub-assembly 12 is attached to the dash panel 11 from the front of the vehicle body.
Pedal unit sub-assembly mounting hole 74 drilled in
And then tighten it with bolts from the front of the car body.

In this case, as shown in FIG. 8 (B), the pedal unit sub-assembly 12 is rotated 90 ° in the pitching direction from the vehicle body mounted state shown in FIG. 8 (A),
Further, the brake pedal 26 and the clutch pedal 30 are rotated by 90 ° in the counterclockwise direction when viewed from the front of the vehicle body in the rolling direction, and the brake pedal 26 and the clutch pedal 30 are attached to the pedal unit sub-assembly mounting hole 7
Pass through 4.

Next, as shown in FIG. 8 (C), when the brake pedal 26 and the clutch pedal 30 are inserted into the pedal unit sub-assembly mounting holes 74 in approximately half, the pedal unit sub-assembly 12 is moved in the yawing direction (see FIG. 8 (A)). )
90 ° in the direction of arrow Y), and brake pedal 26
Then, the clutch pedal 30 is completely passed through the pedal unit sub-assembly mounting hole 74, and the state shown in FIG. 8D is obtained.
Then, as shown in FIG. 8 (E), the pedal unit sub-assembly 12 is moved in the rolling direction (arrow X in FIG. 8 (E)).
Direction), and the vehicle body is attached as shown by the imaginary line in FIG. 8E.

In this state, as shown in FIG. 9, the steering support bracket 36 of the pedal unit sub-assembly 12 is sandwiched by the bolt 82 and the nut 84 with the collar 37 previously welded to the steering support bracket 36 on the cowl reinforcement 77. Then, tighten from the bottom of the vehicle. The reference numeral 91 in FIG. 9 indicates a steering bending plate, and the steering bending plate 91 is attached to the weld bolt 104 previously welded to the steering support bracket 36 by the nut 1.
By 06, tighten from below the vehicle body. Also, reference numeral 9
Reference numeral 3 indicates a steering shaft.

Next, as shown in FIG. 1, the air conditioner unit sub-assembly 14 is inserted into the vehicle body 10 from the side,
Mount from the rear to the front of the vehicle body to the position shown in FIG. 10 (A).
In this state, as shown in FIG. 10 (A), a flange 49 extending upward from the air conditioner main body 42 is fastened by a nut 79 welded to the front side of the vehicle body of the cowl reinforcement 77 and a bolt 81 inserted from the rear side of the vehicle body. Fix it. In addition, as shown in FIG.
The lower end 56A of the side wall 57A of the tunnel 57,
Weld nut 10 welded to the inner surface of the side wall portion 57A
8 and a bolt 110 tightened from the outside in the vehicle width direction. The reference numeral 85 in FIG. 10A indicates a center console.

Next, as shown in FIG. 1, the instrument panel unit sub-assembly 16 is mounted on the vehicle body 1 from the side.
It is put into the inside of 0 and is attached from the vehicle body direction to the front, and as shown in FIG. 9, a nut 97 is tightened and fixed to the weld bolt 95 on the pedal unit sub-assembly 12 side from below the vehicle body.

Next, as shown in FIG. 1, the steering post 86 having the steering wheel 85 assembled therein is inserted into the vehicle body 10 from the side, and as shown in FIG. 9, the steering support portion 58A of the instrument panel 58. Then, the bolt 100, the nut 102, and the weld bolt 95 and the nut 97 welded to the steering support portion 58A are fixed.

Next, as shown in FIG. 11, the lower panel 90 is assembled to the lower side of the glove box 66 of the instrument panel unit sub-assembly 16.

Next, the operation of this embodiment will be described. In the vehicle body front structure of the present embodiment, the air conditioner body 42, which is a heavy load, is provided in the air conditioner unit sub-assembly 14,
The separation from the instrument panel unit sub-assembly 16 reduces the load applied to the instrument panel reinforcement 54. by this,
The instrument panel reinforce 54 can be used as the grip portion of the instrument panel unit sub-assembly 16 without reinforcing the instrument panel reinforce 54, that is, without increasing the weight of the instrument panel reinforce 54.

Further, in the vehicle body front structure of this embodiment, since the air conditioner body 42 is separated from the instrument panel unit sub-assembly 16, the steering post 86 fixed to the steering support portion 58A of the instrument panel 58 is provided. And the air conditioner body 4
It becomes difficult for the vibration of the second blower motor to be transmitted, and the anti-vibration support structure is not required.

In the vehicle body front structure of the present embodiment, since the cowl wire harness 50 is assembled in advance to the air conditioner unit sub-assembly 14, the working vehicle enters the vehicle compartment and the cowl wire harness 50 is attached to the vehicle body 10. Assembling workability is better than in the case of directly assembling, and interference and biting at the time of assembling the instrument panel unit sub-assembly 16 can be prevented.

Further, in the vehicle body front structure of the present embodiment, since the microcomputer 48 is assembled in advance to the computer mounting bracket 44 of the air conditioner unit sub-assembly 14, the work vehicle enters the vehicle compartment and the microcomputer 48 is installed. Assembling workability is better than in the case of directly assembling to the vehicle body 10.

[0032]

According to the vehicle body front structure of the present invention, the parts near the dash panel include a pedal unit sub-assembly having a base panel provided with at least pedals and master cylinders, at least an air conditioner body and a cowl wire. An air conditioner unit sub-assembly having a harness, and an instrument panel unit sub-assembly having at least an instrument panel reinforcement, an instrument panel wire harness, a duct, a safety pad, and an instrument panel mounting component are divided into three sub-assemblies. Since each sub-assembly is assembled to the vehicle body, without increasing the weight of the instrument panel reinforcement,
It has an excellent effect that the instrument panel reinforcement can be used as a grip portion of the instrument panel unit.

[Brief description of drawings]

FIG. 1 is a perspective view of a front body structure of an automobile according to an embodiment of the present invention, as viewed obliquely from the front of the vehicle body.

FIG. 2 is a perspective view showing a pedal unit sub-assembly of a vehicle body front structure according to an exemplary embodiment of the present invention, as viewed obliquely from the rear of the vehicle body.

FIG. 3 is an exploded perspective view of FIG.

FIG. 4 is a front view showing the air conditioner unit sub-assembly of the vehicle body front structure according to the embodiment of the present invention, as seen from the rear side of the vehicle body.

FIG. 5 is an exploded perspective view of an air conditioner unit sub-assembly of a vehicle body front structure according to an exemplary embodiment of the present invention, as viewed obliquely from the rear of the vehicle body.

FIG. 6 is an exploded perspective view showing an instrument panel unit sub-assembly of a vehicle body front structure according to an exemplary embodiment of the present invention, as viewed obliquely from the rear of the vehicle body.

FIG. 7 is an exploded perspective view of the vicinity of the dash panel of the vehicle body front structure according to the embodiment of the present invention, as seen obliquely from the rear of the vehicle body.

8A to 8E are explanatory views showing an assembling procedure of a pedal unit sub-assembly of a vehicle body front structure according to an embodiment of the present invention.

FIG. 9 is a side sectional view showing an assembled state of the pedal unit sub-assembly of the vehicle body front structure according to the embodiment of the present invention.

10A is a side sectional view showing an assembled state of an air conditioner unit sub-assembly of a vehicle body front structure according to an embodiment of the present invention, and FIG. 10B is a sectional view taken along line B- of FIG. It is a B line sectional view.

FIG. 11 is a side sectional view showing an assembled state of the instrument panel unit sub-assembly of the vehicle body front structure according to the embodiment of the present invention.

FIG. 12 is a perspective view showing a vehicle body front structure according to a conventional example, as viewed obliquely from the front of the vehicle body.

[Explanation of symbols]

 10 vehicle body 10A front part 11 dash panel 12 pedal unit sub-assembly 14 air conditioner unit sub-assembly 16 instrument panel unit sub-assembly 18 base panel 22 brake master cylinder 24 clutch master cylinder 26 brake pedal 28 bracket 30 clutch pedal 42 air conditioner body 44 computer mounting Bracket 48 Microcomputer 50 Cowl wire harness 54 Instrument panel Reinforce 58 Instrument panel 58A Safety pad 59 Duct 60 Instrument panel wire harness 64 Meters (instrument panel mounting parts) 74 Pedal unit sub-assembly mounting hole

Front page continuation (72) Inventor Shinichi Matsumoto 1 Toyota-cho, Toyota-shi, Aichi Toyota Motor Co., Ltd.

Claims (1)

[Claims] 1. A part near a dash panel, a pedal unit sub-assembly having a base panel provided with at least pedals and a master cylinder, an air-conditioner unit sub-assembly having at least an air conditioner body and a cowl wire harness, and at least an instrument. Instrument panel reinforce, instrument panel, wiring harness, duct, safety pad, instrument panel unit sub-assemblies having instrument panel mounting parts, divided into three sub-assemblies, and each sub-assembly is assembled to the vehicle body The front structure of the car body characterized by.