JP2000016345A - Lower structure of automobile body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts to be arranged on an engine inspection lid, and to fit a seat belt buckle to a rail member for a seat. SOLUTION: This lower vehicle body structure is provided with an engine room inspection lid 4 which is pivotably supported in an opening/closing manner by an opening part of a floor panel located on an upper part of an engine room, rail members 5, 6 for seat which slidably support seats for vehicle, a hook member 13 which is arranged on a forward end part of the rail members 5, 6 for a seal and engaged with a locking device fixed to a floor panel, and a hinge member 14 which is connected to both rear end parts of the rail members 5, 6 and the floor panel, and turnably supports the engine room inspection lid 4. The rail members 5, 6 comprise upper rails 16, 37 and lower rails 15, 38, and the seat belt buckle 10 is turnably supported by the upper rail 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower body structure of an automobile provided at an opening of a floor panel. More specifically, the present invention relates to a structure of an openable / closable engine room inspection cover provided in a floor panel opening above an engine room in a cab-over type vehicle.

[0002]

2. Description of the Related Art Conventionally, in a so-called cab-over type vehicle, an engine room is provided below a driver's seat, and an engine is provided in the engine room. In order to inspect and maintain the engine, an opening is provided in a floor panel above the engine room, and the opening is normally closed by an engine room inspection lid called a riser panel. . At the top of this riser panel 101, as shown in FIG.
The seat 102 is slidably mounted in the front-rear direction.

As shown in FIG. 10, the riser panel 101 is a substantially rectangular panel, and has a plurality of downwardly recessed ribs 103 formed in order to improve the strength in the longitudinal direction of the vehicle. Two riser panel hooks 104, 104 are attached by spot welding. This riser panel hook 104 is shown in FIG.
As shown in FIG. 1, it is configured to be held in a state of being engaged with a front seat lock 112 provided on the floor panel 105. On the other hand, the rear end of the riser panel 101 is spot-welded to the riser panel hinge 106,
It is rotatably supported by the floor panel 105. Also, on the inside and outside of the riser panel 101 in the vehicle width direction,
Each of the inner rails 107 extends along the longitudinal direction of the vehicle.
And an outer rail 108 are fixed, and a riser panel mount bracket 109 is attached to the front end and the rear end of the inner rail 107 and the outer rail 108.
Are respectively fixed. The inner rail 107 and the outer rail 108 are attached to the riser panel 101 via bolts and nuts via a riser panel mount bracket 109. Further, as shown in FIG. 11, the seat belt buckle 110 is directly bolted to the floor panel 105 and is rotatably supported. Note that a plurality of bolt holes 111 are provided on the upper surfaces of the inner rail 107 and the outer rail 108.
The seat 102 is attached to the rails 107 and 108 through the bolt holes 111.

[0004]

However, the above conventional vehicle lower body structure has the following problems. (1) Outer rail 1 on riser panel 101
08, inner rail 107, riser panel hook 1
Since a large number of components such as the 04, the riser panel hinge 106, and the riser panel mount bracket 109 are attached, the structure of the riser panel 101 is complicated and the weight is heavy. In addition, since the number of parts is large, the number of man-hours for managing the parts increases, which is disadvantageous in cost. Furthermore, since the riser panel 101 is required to function as a strength member, the riser panel 1
01 itself became heavier. (2) In order to attach the seat belt buckle 110 to the inner rail 107, it is necessary to further increase the strength of the riser panel 101. Therefore, the seat belt buckle 110 has to be directly fixed to the floor panel 105. Therefore, the buckle 110 does not move with the seat 102,
Depending on the occupant's riding position, optimal restraint may not be obtained.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to reduce the number of parts of a riser panel and to attach a seat belt buckle to an inner rail. An object of the present invention is to provide a lower body structure of an automobile.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an engine room inspection cover at an opening provided in a floor panel above an engine room, and an engine room inspection cover at one end of a seat rail member. A hook member that engages with a lock device for the floor panel, a hinge member that rotatably supports the inspection lid is provided at the other end of the seat rail member, and the seat rail member is It is arranged on the engine room inspection lid via a hook member and a hinge member. As a result, the riser panel hook, which was conventionally fixed to the riser panel, and the riser panel mount bracket, which was attached to the rail member for the seat, are combined into one, and the riser panel hinge, which is fixed to the riser panel, and the seat, The riser panel mount bracket of the rail member for use can be combined with one, and the number of parts can be reduced, and the cost and weight can be reduced accordingly. Further, the present invention provides an engine room inspection cover pivotally supported by an opening of a floor panel located above an engine room, a seat rail member for slidably supporting a vehicle seat, and the seat rail. A hook member disposed on the lower surface of the front end of the member and capable of engaging with the floor panel locking device, one end of which is fixed to the rear end of the seat rail member, and the other end of which is fixed to the floor panel A hinge member rotatably supporting the seat rail member, and the seat rail member is mounted on the engine room inspection lid via a hook member and a hinge member. further,
In the present invention, the seat belt buckle is rotatably supported by the seat rail member. Since the seat belt buckle is attached to the slidable seat rail member, even if the seat is slid in the front-back direction, the buckle moves with the movement of the seat, thereby improving the seat belt restraint property for the occupant. .

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. The lower body structure of an automobile according to the present invention is suitable for use in, for example, a cab-over type automobile 1 as shown in FIG. In this type of automobile 1, an engine room is provided below a floor panel provided in the room, and a seat is provided above the engine room. FIG. 2 is a perspective view of the interior of the vehicle as viewed obliquely from behind the lower body structure of the automobile according to the present invention. The front side of the floor panel 2 swells upward and is formed in a stepped portion 3 which is raised one step. An engine room (not shown) is formed below the step portion 3, and an engine is housed in the engine room. An opening 42 is provided on the upper surface of the step portion 3 for inspection and maintenance of the engine.
(See FIG. 7), and the opening is normally closed by an engine room inspection lid called a riser panel 4.

An inner rail 5 and an outer rail 6 are provided on the upper surface of the riser panel 4, and a seat cushion 7 and a seat back 8 are provided above these rails 5, 6. 9 are provided. Further, a seat belt buckle 10 is rotatably supported on the indoor side of the seat cushion 7 so as to be rotatable in the front-rear direction, and a front end of a seat belt tongue (not shown) is inserted and locked. The riser panel 4 and the inner rail 5 and the outer rail 6 provided on the upper surface thereof have a structure as shown in FIG. The riser panel 4 has a central portion that is recessed downward, and an outer shape that is substantially square. A bolt hole 11 is formed in each corner. An inner rail 5 and an outer rail 6 are attached to the upper surface of the riser panel 4 in the vehicle width direction inside and outside in the front-rear direction. The inner rail 5 includes a rail main body 12, a front rail hook 13 fixed to a front end of the rail main body 12, and a rear rail hinge 14 fixed to a rear end of the rail main body 12. First, the structure of the inner rail 12 will be described.

The rail main body 12 is composed of a lower rail 15 at a lower part and an upper rail 16 at an upper part. It is formed in. The upper rail 16 is a plate-shaped member formed in a substantially inverted T-shape. The lower end of the upper rail 16 is accommodated in the lower rail 15 and is slidable with respect to the lower rail 15. A bolt hole 17 is formed in the rear part of the upper rail 16, and the seat belt buckle 10 is rotatably supported in the front-rear direction via a bolt 18 and a nut 19. A seat back attaching portion 20 is provided at a further rear portion of the seat belt buckle 10. The front rail hook 13 is formed by integrating a conventional riser panel hook 104 and a front riser panel mount bracket 109. That is, as shown in FIG. 4, the front end of the front rail hook 13 is formed in a substantially J shape in a side view bent obliquely downward, and is flat from the center to the rear end of the front rail hook 13. It is formed in the part 21. The front end of the lower rail 15 is fixed to the flat portion 21 by caulking and welding with a pin, and a bolt hole 2 formed in the flat portion 21 of the front rail hook 13 is formed.
2, 22 and the bolt holes 11 at the corners of the riser panel,
11 through the riser panel mounting bolt 23,
The front rail hook 13 is connected to the riser panel 4 by the riser panel mounting nut 24 as shown in FIG.
It is fixed to. In this fixing method, a projection (projection) is provided on the riser panel mount bolt 23, and the bolt 23 is fixed to the flat portion 21 of the front rail hook 13 by projection welding.

The rear rail hinge 14 is formed by integrating a conventional rear riser panel mount bracket 109 and a riser panel hinge 106, and is attached to the step 3 of the floor panel 2 as shown in FIG. The first hinge member 25 to be attached and the second hinge member 26 attached to the lower rail 15
7 rotatably support each other. The first
The hinge member 25 is formed in a substantially U-shaped cross section by a mounting surface 28 in contact with the vertical wall surface of the floor panel 2 and flanges 29, 29 erected rearward from both sides of the mounting surface 28. Bolt holes are drilled in the mounting surface 28,
The first hinge member 25 is fixed to the floor panel 2 using bolts 32 and nuts 33. Further, the second hinge member 26 is provided on the rail mounting surface 4 in contact with the lower rail 15.
3 and flanges 30, 30 vertically extending downward from both sides of the rail mounting surface 43. Further, as shown in FIG. 7, the structure of the second hinge member 26 located below the seat belt buckle 10 includes a rail mounting surface 43 extending substantially horizontally, and a riser mounting surface 31 one step lower than the rail mounting surface 43. The riser mounting surface 31 is fixed to the riser panel 4 with bolts 23 and nuts 24. This fixing method also
As described above, the projection is provided on the bolt 23 and is fixed to the riser panel 4 by projection welding. As shown in FIG. 8, a front seat cushion frame 34 is fixed to the rear end of the upper rail 16 via a front seat mount bolt 35.

Although the structure of the inner rail 5 has been described above, the outer rail 6 has basically the same structure as the inner rail 5, and therefore only different parts will be described. The rail body 36 of the outer rail 6 is
As shown in FIG. 3, the upper rail 37 formed in a substantially cylindrical shape, which is substantially the same as the lower rail 15 of the inner rail 5, is used upside down with the lower rail 15, and the lower rail 38 at the bottom is It is formed in an inverted hat shape and is housed inside the upper rail 37. The upper surface of the upper rail 37 is formed flat, and a substantially triangular bracket 39 to which the seat 9 is attached is fixed to the rear end. In addition, the structures of the front rail hook 13 and the rear rail hinge 14 are the same as those of the inner rail 5.

The operation of the lower body structure of the automobile having the above configuration will be described below. First, at normal times,
As shown in FIG. 4, the front rail hook 13 is fixed by a front seat lock 40 fixed to the floor panel 2, and the riser panel 4 is closed with the opening of the floor panel 2 closed. The front seat lock 40 has a toggle lock mechanism, and locks the front rail hook 13 by pulling the front rail hook 13 downward. When opening the riser panel 4 for checking the engine, etc., the front seat lock 4 is used.
0 may be released, the riser panel 4 may be lifted upward, and the riser panel 4 may be rotated about the pin 27 of the rear rail hinge 14. After the inspection of the engine, etc., the riser panel 4
, And the front seat lock 40 may be hung on the front rail hook 13 to be locked. Further, as described above, since the seat belt buckle 10 is rotatably supported by the upper rail 16 of the inner rail 5, when the seat 9 is moved in the front-back direction,
The seat belt buckle 10 itself is configured to slide in accordance with the movement of. As shown in FIG. 7, a weather strip 41 is provided circumferentially below the riser panel 4, and extends along the periphery of the opening 42 of the floor panel 2. Is in contact.

[0013]

As described above, the lower vehicle body structure of the automobile according to the present invention has the following effects. (1) Since the hook member and the hinge member are fixed to the seat rail member, the number of parts can be reduced, the number of steps for assembling parts, and the cost of parts can be reduced. (2) Further, with the reduction in the number of parts, it is not necessary to provide the function of the strength member to the engine room inspection lid, and only the inspection lid function can be provided. (3) Further, since the seat belt buckle is attached to the seat rail member, the buckle also moves with the movement of the seat, so that the seat belt restraint for the occupant is improved.

[Brief description of the drawings]

FIG. 1 is a side view of an automobile having a lower vehicle body structure according to the present invention.

FIG. 2 is a perspective view of a floor panel and a seat having a lower vehicle body structure according to the present invention.

FIG. 3 is an exploded perspective view showing a lower vehicle body structure according to the present invention.

FIG. 4 is an enlarged side view showing a front end portion of the lower vehicle body structure according to the present invention.

FIG. 5 is an enlarged sectional view showing a portion A in FIG. 4;

FIG. 6 is an enlarged side view showing a rear end portion of the lower vehicle body structure according to the present invention.

FIG. 7 is a sectional view taken along line BB in FIG. 6;

FIG. 8 is a sectional view taken along line CC in FIG. 6;

FIG. 9 is a perspective view of a floor panel and a seat having a conventional lower vehicle body structure.

FIG. 10 is an exploded perspective view showing a conventional lower vehicle body structure.

FIG. 11 is a sectional view showing a conventional lower vehicle body structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automobile 2 Floor panel 3 Step part 4 Riser panel 5 Inner rail 6 Outer rail 7 Seat cushion 8 Seat back 9 Seat 10 Seat belt buckle 11 Bolt hole 12 Rail body 13 Front rail hook 14 Rear rail hinge 15 Lower rail 16 Upper rail 17 Bolt Hole 18 Bolt 19 Nut 20 Seat back mounting part 21 Flat part 22 Bolt hole 23 Riser panel mount bolt 24 Riser panel mount nut 25 First hinge member 26 Second hinge member 27 Pin 28 Mounting surface 29 Flange 30 Flange 31 Riser mounting surface 32 Bolt 33 Nut 34 Front seat cushion frame 35 Front seat mount bolt 36 Rail body 37 Upper rail 38 Lower rail 39 Bracket 40 Front seat lock 41 Weather strip 42 Opening 43 Rail mounting surface

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3B087 BA02 BB02 CA16 DA02 DE06 3D003 AA04 AA15 AA18 BB03 CA14 CA19 DA19 3D004 AA03 AA13 AA15 BA02 CA00 CA12 3D018 CA05 CA08 CB06 CC01 CC02 CD01 CD04

Claims (3)

[Claims] An engine room inspection cover is provided in an opening provided in a floor panel above an engine room, and a hook member which engages with a floor panel locking device is provided at one end of a seat rail member. A hinge member for rotatably supporting the inspection lid is provided at the other end of the seat rail member, and the seat rail member is disposed on the engine room inspection lid via the hook member and the hinge member. The lower body structure of an automobile, characterized in that: 2. An engine room inspection cover rotatably supported by an opening of a floor panel located above an engine room, a seat rail member slidably supporting a vehicle seat, and the seat rail member. A hook member arranged on the lower surface of the front end of the seat rail and capable of engaging with the locking device of the floor panel, one end of which is fixed to the rear end of the seat rail member, and the other end of which is fixed to the floor panel. A hinge member rotatably supporting the seat rail member, wherein the seat rail member is mounted on the engine room inspection lid via a hook member and a hinge member. Body structure. 3. The lower vehicle body structure according to claim 1, wherein a seat belt buckle is rotatably supported on the seat rail member.