JP3555406B2 - Body structure - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle body structure such as a micro bus, and more particularly to a front floor structure.
[0002]
[Prior art]
As a front floor structure of a micro bus, for example, there is one as shown in FIG. According to this, the front floor panel 100 disposed so as to cover an engine, a transmission, and the like (not shown) supported at the front of the vehicle has a front end whose front end is located at the front end of the vehicle. At the same time, it is joined to one cross member 101 by welding, and the rear part falls down in a step-like manner, and the rear end part is connected to the floor panel 103 of the cabin via the left-right skeletal member 102. An entrance / exit step S is provided on one side of the front panel of the floor panel 103 of this guest room.
[0003]
The front floor panel 100 has No. A pair of left and right longitudinal frame members 104a and 104b are disposed between the one cross member 101 and the lateral frame member 102. The front floor panel 100 sandwiched between the pair of left and right longitudinal frame members 104a and 104b has an upper opening 105 located on the main floor surface and mainly used for engine inspection. A rear opening 106 is formed on the stepped floor surface and mainly used for inspection of the transmission.
[0004]
[Problems to be solved by the invention]
By the way, in the conventional front floor structure described above, the front and rear length of the front floor portion is set to be relatively long in order to secure a work space for removing and attaching the engine and the transmission to and from the vehicle. Incidentally, when removing the engine and the transmission from the frame, the engine and the transmission are lifted slightly by a jack or the like, and then moved downward while moving rearward of the vehicle.
[0005]
Therefore, as shown in FIG. 5, the entrance / exit step S is provided at a position far away from the front wheel tires in the rearward direction. since the look back angle theta ₂ of the increases, there is a problem that physical burden of the driver is increased.
[0006]
However, in order to reduce the retrospective angle theta ₂ is only to move the entrance step S toward the front of the vehicle. However, if the front / rear length of the front floor portion is set short in order to simply move the entrance / exit step S forward of the vehicle, the left-right skeletal member 102 provided to increase the rigidity of the front floor panel 100 also moves forward. Therefore, there arises a problem that the left and right skeletal members 102 obstruct the removal and attachment of the engine and the transmission.
[0007]
Further, in the conventional front floor structure, there is also a problem that the area of the opening is limited to avoid a decrease in rigidity, and the opening area cannot be made large.
[0008]
Accordingly, an object of the present invention is to enable the entrance / exit step S to be moved to the front of the vehicle as much as possible without lowering the rigidity of the vehicle body and without impairing the workability for removing and installing the engine and the like, and for the inspection. It is an object of the present invention to provide a vehicle body structure that can have a large opening area.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, a vehicle body structure according to claim 1 of the present invention supports an engine or the like in front of a vehicle, and a floor surface of the vehicle that covers an upper part of the engine or the like has a rear end portion of the engine or the like. in having a step portion formed of depressed downwardly of the vehicle, the opening of the lower edge opening for the engine such as inspection provided the step portion, the upper edge of the opening and the left and right both side edge portions a closed cross section, characterized in that connected the left, and a vehicle body outer frame member of the right both side edge portions and the vehicle in the strength member.
[0010]
According to this, since the skeletal function is obtained by the closed cross-section of the opening edge and the strength member, the conventionally provided left-right skeletal member can be eliminated. As a result, the entrance / exit step S can be moved to the front of the vehicle as much as possible without lowering the rigidity of the vehicle body and without impairing the workability for removing and mounting the engine and the like, and the opening area for inspection and the like is provided. Can be increased.
[0011]
Vehicle body structure according to claim 2 of the present invention, a portion where the closed cross section is formed, and a cross member of the vehicle body frame provided on the vehicle front end, the front-rear direction frame member which extends in the longitudinal direction of the reinforcement member and the vehicle And is connected.
[0012]
According to this, a loop-shaped skeletal function is obtained, and the rigidity of the floor surface can be further improved, as in the conventional case where the left-right skeletal member is provided.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a vehicle body structure according to the present invention will be described in detail using embodiments with reference to the drawings.
[0014]
[Example]
1 is a perspective view of a front floor portion showing one embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, FIG. 3 is a sectional view taken along line BB of FIG. 1, and FIG. FIG. 5 is a perspective view of the chassis frame and FIG.
[0015]
In FIG. 4, reference numeral 1 denotes a body of a microbus, which is a front body part 2 constituting a vehicle front part, a front floor part 3 covering an engine room, a roof part 4 constituting a vehicle roof part, and a right side constituting a vehicle right side part. It comprises a body part 5, a rear body part 6 constituting a vehicle rear part, a body frame part 7 constituting a vehicle floor part, and a left side body part 8 constituting a vehicle left side part.
[0016]
The body 1 is provided on a chassis frame 11 formed in a ladder shape by a plurality of cross members 10 and the like which are disposed at predetermined intervals in the vehicle front-rear direction with both the left and right side members 9 in an appropriate number. It is supported via a body mount (not shown) disposed at the location. An engine and a transmission (not shown) are supported at the front of the chassis frame 11.
[0017]
As shown in FIG. 1, the front floor panel 20 constituting the front floor section 3 has a front end located at the front end of the body frame section 7 and has an open section No. 1 which is open to the front of the vehicle. While being joined to the one cross member 21 by welding, the rear end portion rises to form an engine room or a tire house, and then falls down below the vehicle to form a step portion 20a.
[0018]
On the floor surface of the front floor panel 20, an upper opening 22 mainly used for inspection of an engine is formed, and the stepped portion 20a of the front floor panel 20 is used for inspection of a transmission and removal of an engine or the like. A rear opening 23 is formed in which a lower edge portion provided for mounting is opened.
[0019]
On the lower surface of the front floor panel 20 located on the left and right sides of the upper opening 22 and the rear opening 23, a pair of left and right upper and lower hat-shaped cross-section longitudinal frame members 24a and 24b are formed along the panel shape. The front end is integrally connected to form a closed section structure. The rear end is connected to a pair of left and right hat-shaped cross-sectional reinforcing members (No. 2 cross members) 25a and 25b which will be described later.
[0020]
The upper edge and the left and right side edges of the rear opening 23 are formed in a closed sectional structure. That is, the reinforcing panel 26 having a shape along the opening edge is joined to the back side (engine room side) of the gate-shaped opening edge of the step portion 20a of the front floor panel 20 by spot welding or the like. As shown in FIG. 2, a rectangular closed-section structure is formed.
[0021]
In addition, the lower portion of the left side edge of the closed cross-sectional structure in the rear opening 23 and the No. 1 as a vehicle body outer frame member. The above-mentioned left lateral reinforcing member 25a is joined to the lower surface of the rear end flange portion of the front floor panel 20 connecting the two pillars (not shown) over the entire length by spot welding or the like to form a closed cross-sectional structure. Have been.
[0022]
On the other hand, the lower portion of the right side edge of the closed cross-sectional structure in the rear opening portion 23 and No. 2 as the vehicle body outer frame member. On the lower surface of the rear end flange portion of the front floor panel 20 connecting the two pillars 27 (see FIG. 3), the above-mentioned right lateral reinforcing member 25b is provided at a slight distance (not connected) from the right side edge portion. Are joined by spot welding or the like to form a closed sectional structure.
[0023]
3, as shown in FIG. At a step portion 20a of the front floor panel 20 between the two pillars 27, a first reinforcing bracket 28 and a second reinforcing bracket 29 of a predetermined shape having the same height as the step portion 20a are separated by a predetermined distance. Will be arranged.
[0024]
The first reinforcing bracket 28 is connected across the lower right edge of the closed cross-sectional structure in the rear opening 23 and the right front-rear skeletal member 24b, and the second reinforcing bracket 29 is , The right side of the step 20a and the No. The two pillars 27 are joined across the two pillars 27 to form a closed cross-sectional structure extending in the vertical direction.
[0025]
Although not shown, the above-mentioned body mount is disposed below the front end and the rear end of the pair of left and right longitudinal frame members 24a and 24b in FIG.
[0026]
As described above, in the present embodiment, the upper edge portion and the left and right side edges of the rear opening portion 23 have a closed cross-sectional structure using the reinforcing panel 26, and the pair of left and right horizontal reinforcing members 25a, 25b and the first and the first lateral reinforcing members 25a, 25b. By appropriately reinforcing using the two reinforcing brackets 28 and 29, a function as a skeleton is given to the rear end of the front floor panel 20.
[0027]
This makes it possible to form the rear opening 23 whose lower edge is opened without using the left-right skeletal member 102 in the conventional front floor structure shown in FIG.
[0028]
As a result, the front / rear length of the front floor portion 3 can be reduced without reducing the rigidity of the vehicle body and without impairing the workability for removing and attaching the engine or the like, that is, as shown in FIG. , The floor area of the passenger compartment can be flattened forward and the entrance / exit step S can be moved forward of the vehicle.
[0029]
Therefore, the driver's turning angle with respect to the entrance / exit step S can be reduced (θ ₁ <θ ₂ ), and the physical burden of the driver can be reduced.
[0030]
In addition, since the left and right skeletal members 102 can be eliminated, the degree of freedom and the opening area of the rear opening 23 in particular can be increased while ensuring the same or higher strength and rigidity as the conventional structure.
[0031]
Further, the closed cross-section of the rear opening 23 and the No. of the front end of the vehicle. Since the one cross member 21 is connected by a pair of left and right longitudinal frame members 24a and 24b via a pair of left and right lateral reinforcing members 25a and 25b and a first reinforcing bracket 28, a lateral frame member 102 is provided. As in the prior art, a loop-shaped skeletal function is obtained, and the rigidity of the floor surface of the front floor panel 20 is further increased.
[0032]
It is needless to say that the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention.
[0033]
【The invention's effect】
As described above, according to the first aspect of the present invention, the engine or the like is supported in front of the vehicle, and the floor of the vehicle that covers the upper side of the engine or the like falls below the vehicle at the rear end of the engine or the like. An opening for inspecting the engine and the like is provided in the step, and the upper edge and the side edge of the opening have a closed cross-sectional structure, and the side edge and the outside of the vehicle body of the vehicle are provided. Since the skeletal member and the skeletal member are connected by the strength member, a skeletal function can be obtained by the closed cross section of the opening edge and the stiffness member, so that the conventionally provided left-right skeletal member can be eliminated. As a result, the entrance / exit step S can be moved to the front of the vehicle as much as possible without lowering the rigidity of the vehicle body and without impairing the workability for removing and installing the engine and the like, and the opening area for inspection and the like is provided. Can be increased.
[0034]
According to the second aspect of the present invention, the closed cross section of the opening edge and the cross member of the vehicle body frame provided at the front end of the vehicle are connected by the skeleton member. In addition, a loop-shaped skeletal function is obtained, and the rigidity of the floor surface can be further improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a front floor portion showing one embodiment of the present invention.
FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 3 is a sectional view taken along line BB of FIG. 1;
FIG. 4 is a perspective view of a body and a chassis frame in the micro bus.
FIG. 5 is a comparative explanatory diagram of the operation and effect.
FIG. 6 is a perspective view of a conventional front floor portion.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Body 2 Front body part 3 Front floor part 4 Roof part 5 Right side body part 6 Rear body part 7 Body frame part 8 Left side body part 9 Left and right side members 10 Cross member 11 Chassis frame 20 Front floor panel 20a Step part 21 No. 1 cross member 22 upper opening 23 rear opening 24a, 24b longitudinal frame members 25a, 25b lateral reinforcing member 26 reinforcing panel 27 No. 2 pillar 28 first reinforcing bracket 29 second reinforcing bracket

Claims (2)

An engine or the like is supported in front of the vehicle, and a floor surface of the vehicle that covers an upper portion of the engine or the like has a stepped portion that is lowered below the vehicle at a rear end of the engine or the like. An opening for opening the lower edge for equal inspection is provided, and the upper edge and the left and right side edges of the opening have a closed cross-sectional structure. The vehicle body structure is characterized by being connected by a strength member. Characterized in claim 1, and a site where the closed cross section is formed, that the cross member of the vehicle body frame provided on the vehicle front end, ligated with the longitudinal direction frame member which extends in the longitudinal direction of the reinforcement member and the vehicle And body structure.

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