JPS5925710B2 - Engine service cover mounting structure for cab-over type vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an engine service cover mounting structure for a cab-over type vehicle, and more particularly, the present invention relates to an engine service cover mounting structure for a cab-over type vehicle, and in particular, the engine service cover on which the driver's seat is mounted is attached to a cab-over type vehicle hinged to the rear cabin floor. This is designed to prevent a secondary collision in which the seat rotates and the occupant collides with the door.

Conventionally, in cab-over type automobiles, the rear end of the engine service cover on which the driver's seat is placed is hinged to the rear cabin floor at two points, the single-chamber center side and the door side. Driver's seat in the center? Some models also have a seat belt anchor for the front passenger seat.

In such a cab-over type vehicle S, a large load is applied to the seat belt anchor portion of the engine service cover when the seat belt is attached, so the strength of the hinge on the center side of the vehicle interior is set to be large.

By the way, when a cab-over type vehicle such as the one described above collides, a large load is applied to the seat belt.

First, this load acts on the engine service cover via the seat belt anchor portion.

The rear cabin floor, where the rear end of the engine service cover is hinged at two points, the center side of the vehicle body and the door side, is generally more easily deformed on the center side of the vehicle body than the door side, so the engine service cover tends to rotate toward the door under the above load.

Then, the door side hinge, which is weak in strength, will be damaged and the door side hinge part will not be able to bear the load.The load will be concentrated on the hinge on the center side of the passenger compartment, and as a result, the door side of the service cover will be The tendency of the driver's seat to rotate is further exacerbated, causing the driver's seat to rotate in the same direction as the driver's seat tilts, creating a risk of a secondary collision in which the occupant collides with the door.

The present invention has been made in view of this point, and in the cab-over type automobile as described above, the hinge on the center side of the cabin is made up of two channel-shaped plate members and a pin to provide strong strength. While the structure is rigid, the hinge on the door side is
a plate member fixed to a rear cabin floor; a pin passing through the plate member; a first connecting member having one end pivotally supported by the pin, the other end attached to the engine service cover, and having a curved portion in the center; is pivotally supported by the pin, the other end is attached to the engine service cover, and one end is detached when a predetermined load is applied, and the second connecting member is extended while bearing a certain amount of load. By adopting a flexible structure, when a large load is applied to the seat belt in the event of an automobile collision, the door side hinge uses its first connecting member to follow the movement of the single room center side hinge, and the driver's seat is moved forward. To provide an engine service cover mounting structure for a cab-over type automobile, which allows the engine service cover to be moved in parallel and thereby prevents the conventional rotation of the driver's seat to prevent secondary collisions and protect the safety of occupants. It is something.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 1 shows the front structure of a cab-over type automobile, where 1 is an engine, 2 is a cabin provided on the engine 1, 3 is a front cabin floor, and 4 is a rear cabin floor.
An engine service cover 5 is disposed to cover an opening (not shown) opened on the driver's seat side facing the engine 1 in the rear cabin floor 4, and the rear end of the engine service cover 5 is connected to the rear cabin. The engine service cover 5 is hinged to the floor 4 at two locations, one on the center side of the vehicle body and one on the door side, and is provided so that the engine service cover 5 can be opened and closed to allow inspection and service of the engine 1.

A driver's seat 9 is placed on the engine service cover 5, and includes a seat cushion 6 and a seat back 7 connected to each other so as to be tiltable by a reclining device 8.
The seat back 7 of the driver's seat 9 is locked to the vehicle cabin 2 by a locking member 10 so as not to freely tilt.

Further, as shown in FIG. 2, seat belt anchors 11 for the driver's seat S and passenger seat are provided on the single-chamber center side of the engine service cover 5. Each seat is equipped with a seat belt (not shown).

And, if you are in a cab-over type car like the one above,
As shown in FIG. 2, of the two hinge joint structures of the engine service cover 5, the hinge 1 on the center side of the passenger compartment
2 includes a channel-shaped plate member 13 fixed to the rear cabin floor 4, a pin 14 supported by passing through the plate member 13, and a pin 14 having one end (rear end) pivotally supported by the pin 14 and the other end (
The front end) consists of a channel-shaped plate member 15 that is fixed to the engine service cover 5 by welding or the like, and is relatively strong because the seat belt anchor 11 is installed on the center side of the vehicle interior of the engine service cover 5 as described above. It is formed with a strong hinge structure.

On the other hand, the door-side hinge 16 is supported by a channel-shaped plate member 17 fixed to the rear cabin floor 4 and passing through the plate member IT, as shown in detail in FIGS. 3 to 5. One end 19a (rear end) is pivotally supported by the pin 18, the other end 19b (front end) is fixed to the engine service cover 5 by welding or the like via a bracket 20, and a U is provided in the center. The first connecting member 19 has a curved portion 19c curved in a letter shape, one end portion 21a (rear end portion) is pivotally supported by the pin 18, and the other end portion 21b (front end portion) is attached to the engine service cover 5. 1 Connecting member 19 other end 1
9b2 and bracket 20, and when a predetermined load is applied, one end (in the figure, one end 21a)
) is detachable from the second connecting member 21. Under normal conditions, the second connecting member 21 ensures the hinge function (opening/closing function) without any hindrance (occurrence of backlash), but when a predetermined load is applied, the first connecting member 21 It is formed into a flexible structure that can bear a certain amount of load by the member 19 and can be stretched by its curved portion 19c.

In addition, as a structure in which the one end portion 21a is detached when a predetermined load is applied to the second connecting member 21, as shown in FIG. It consists of a shaft support hole 22 passing through the shaft support hole 22, and a cut groove 23 having one end open in the shaft support hole 22 and the other end opening rearward and having a width smaller than the diameter of the pin 18.
On the other hand, when a predetermined load is applied to the kerf 23 through the pin 18, the kerf 23 deforms and the pin 18 comes out rearward through the kerf 23.

Further, such a detachment structure may be provided at the other end portion 21b of the second connecting member 21.

That is, instead of the above embodiment, one end 21a is connected to the pin 1.
8, and one end 19a of each of the first and second connecting members 19.21 forward of the pin 18.

21a is fixed by welding, while the other end 19b.

21b may be tightened with a bolt, and the other end portion 21b may be provided with a cut groove similar to the cut groove 23 of the above embodiment.

Therefore, in the second embodiment, the engine service cover 5 can be opened and closed via the single-chamber center hinge and the door side hinges 12 and 16 during normal times, making it easy to perform inspection and service of the engine 1. I can do it.

In that case, the engine service cover 5 is located on the side of the door hinge 16, and the first connecting member 1 has a curved portion 19c.
9, the engine service cover 5 can be opened and closed while being supported by the second connecting member 21, so that the engine service cover 5 can be opened and closed smoothly without any problems such as rattling.

That is, if the second connecting member 21 is not provided, the curved portion 19c of the first connecting member 19 will be stretched when the engine service cover 5 is opened and closed, and the opening and closing cannot be performed smoothly. By providing this, problems such as looseness can be solved.

On the other hand, when a large load is applied to the seat belt, such as during a car crash, the engine service cover
Try to move forward for the whole 5.

As a result, either one end 21a of the second connecting member 21 attached to the door hinge 16 immediately separates from the pin 18, or the first connecting member 19 does not separate from the pin 18.
While bearing a certain amount of load, the vehicle center side hinge 12, which bears most of the load, moves forward due to the distraction action of its curved portion 19c, and the driver's seat 9 moves forward in parallel. never rotates.

Therefore, it is possible to prevent a secondary collision in which the driver's seat rotates 90 degrees causing the occupant to collide with the door, as in the past.
It is possible to improve the safety protection of passengers.

As described above, according to the present invention, the rear end of the engine service cover on which the driver's seat is placed is hinged to the rear cabin floor at two points, and the driver's seat and the rear end are hinged to the rear cabin floor at two locations. In a cab-over type automobile equipped with a seat belt anchor for the passenger seat, the hinge on the center side of the passenger compartment is composed of two channel-shaped plate members and a pin, while the hinge on the door side is attached to the rear cabin floor. a first connecting member having one end pivotally supported by the pin, the other end being attached to the engine service cover, and having a curved portion in the center; A second connecting member is pivotally supported by a pin, the other end is attached to the engine service cover, and one end is detached when a predetermined load is applied, thereby ensuring smooth opening and closing operations of the engine service cover. It is possible to prevent the rotation of the driver's seat at the time of a collision, thereby preventing a secondary collision in which the occupant collides with the door, thereby improving the safety of the occupant.

[Brief explanation of drawings]

The drawings illustrate embodiments of the present invention, and FIG. 1 is a schematic diagram of a cab-over type vehicle, FIG. 2 is a perspective view of the driver's seat seen from the rear, and FIG. 3 is a plan view of the door hinge. , FIG. 4 is a perspective view of the same, and FIG. 5 is a cross-sectional view taken along line 2--■ in FIG. 3. 4... Rear cabin floor, 5... Engine service cover, 9... Driver's seat,
11...Seat belt anchor, 12...
・Central hinge, 13.15...Plate member,
14...Pin, 16...Door side hinge, 17...Plate member, 18...Pin, 1
9...First connecting member, 19a...One end, 19b...Other end, 19c...Curved portion, 21... Second connecting member, 21a...
...one end, 21b...the other end.

Claims (1)

[Claims] 1. The rear end of the engine service cover on which the driver's seat is placed is hinged to the rear cabin floor at two points, and seat belt anchors for the driver's seat S and passenger seat are provided on the center side of the engine service cover in the cabin. In a cab-over type automobile, the hinge on the center side of the vehicle compartment is composed of two channel-shaped plate members and a pin, while the hinge on the door side is composed of a plate member fixed to the rear cabin floor, a pin passing through the plate member; a first connecting member having one end pivotally supported by the pin and the other end attached to the engine service cover and having a curved portion in the center; and a first connecting member having one end pivotally supported by the pin and the other end An engine service cover mounting structure for a cab-over type automobile, comprising a second connecting member attached to the engine service cover and one end of which separates when a predetermined load is applied.