JP2010120395A - Vehicle body structure of rear engine vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve space efficiency and maintainability with a simple constitution, regarding a vehicle body structure of a rear engine vehicle. <P>SOLUTION: The shape of an engine room 1 is formed into a step shape rising toward a vehicle rear side, and the engine room 1 includes a horizontal surface 1a, a top surface 1b and a vertical wall 1c. A sitting seat 2 is arranged according to the step shape, and a front end edge of the top surface 1b is projected to the vehicle front to a seat back 2b to form a projecting surface 3. Electrical equipment 7 is arranged in a space part 4 surrounded by the vertical wall 1c, the seat back 2b and the projecting surface 3. A pivoting part 5 for pivotally supporting the seat back 2b is provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle body structure of a rear engine vehicle in which an engine room is disposed at a rear end of the vehicle.

Conventionally, rear engine vehicles have been developed in which an engine is disposed at the rear end of the vehicle to lower the cabin. A rear engine vehicle is known in which a floor panel is raised stepwise at the rear of the vehicle in order to effectively use a surrounding space adjacent to the engine room as a vehicle compartment space.
For example, Patent Document 1 discloses a structure of a rear engine bus in which an air reservoir arrangement space is provided in front of an engine room arranged at the rear end of a vehicle, and a floor panel is protruded upward in a step shape according to the shape of the air reservoir. Are listed. In this technique, the space for the air reservoir is set to the side of the vehicle, and the interior space is expanded by lowering the passage portion of the passenger compartment and the vicinity of the entrance / exit from the other portions.
Japanese Patent Laid-Open No. 10-258776

By the way, in the rear engine vehicle, electronic equipment for controlling the engine, various relays, and fuses are arranged outside the engine room to save space in the engine room. In general, these electrical devices are housed in a storage box and are disposed in a vehicle compartment above an engine room close to the engine.
However, these electrical equipment contains parts that require regular maintenance and needs to be inspected at any time, so other equipment is installed around the space where the storage box is placed. Can not increase the space efficiency.

Further, in the case of the rear engine bus as described in Patent Document 1, it is necessary to protect against inadvertent access by passengers and contact with luggage. Therefore, a sturdy storage box that is covered with bolts or the like so that it cannot be easily removed is used, and there is a problem that maintenance and inspection work is complicated.
On the other hand, when the electrical equipment is arranged in the engine room, good maintainability cannot be obtained, and measures against heat generated from the engine are required, which is disadvantageous in terms of cost.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a vehicle body structure for a rear engine vehicle that can improve space efficiency and maintainability with a simple configuration.

  A vehicle body structure for a rear engine vehicle according to the present invention (Claim 1) includes a horizontally disposed horizontal plane, a top surface disposed behind and above the horizontal plane, and between the horizontal plane and the top surface. And a vertical wall that connects to the vehicle in the vertical direction, and is formed in a staircase shape that rises toward the rear of the vehicle.The engine room is disposed at the rear end of the vehicle, and the butt portion of the passenger is disposed on the horizontal plane. A seat cushion disposed in front of the vertical wall and supporting a back of the occupant; a seat seat disposed in accordance with the step shape of the engine room; and a front end of the top surface A projecting surface formed so as to project forward from the edge to the seat back, and a space surrounded by the vertical wall, the seat back, and the projecting surface, and in which electrical equipment for driving the engine is arranged If, and the seat back is characterized in that and a shaft support for rotatably supported with respect to the engine room.

Further, in the vehicle body structure (claim 2) of the rear engine vehicle according to the present invention, in addition to the structure according to claim 1, the shaft support portion supports the upper portion of the seat back with respect to the vicinity of the front end portion of the protruding surface. It is characterized by doing.
On the other hand, the vehicle body structure of a rear engine vehicle according to the present invention (Claim 3) has the structure according to Claim 1, wherein the shaft support portion pivots the lower part of the seat back to the lower part of the vertical wall or the horizontal plane. It is characterized by supporting.

In the configuration in which the shaft support portion pivotally supports the upper portion of the seat back, the lower end of the seat back is opened upward. On the other hand, in the configuration in which the shaft support portion pivotally supports the lower portion of the seat back, the upper end of the seat back is opened downward.
On the other hand, the vehicle body structure (Claim 4) of the rear engine vehicle according to the present invention is a wire formed on the vertical wall and connected to the electrical equipment in addition to the structure described in any one of Claims 1 to 3. A through hole through which the harness is inserted is further provided.

Further, a vehicle body structure of a rear engine vehicle according to the present invention (Claim 5) is a wire formed on the top surface and connected to the electrical equipment in addition to the structure according to any one of Claims 1 to 3. A second through hole for inserting the harness is further provided.
The vehicle body structure of a rear engine vehicle according to the present invention (Claim 6) has a predetermined gap with respect to the seat back inside the space portion in addition to the structure according to any one of Claims 1 to 5. And a plate member to which the above-mentioned electrical equipment is fixed.

  According to the vehicle body structure of the rear engine vehicle of the present invention (Claim 1), it is possible to access the electrical equipment by opening the space portion toward the passenger compartment side by a simple operation of rotating the seat back. The maintainability of the electrical equipment can be improved. Further, a space formed as a gap between the staircase shape of the engine room and the seat back can be used as an arrangement space for the electrical equipment, and the space efficiency of the vehicle can be improved.

  Further, according to the vehicle body structure of the rear engine vehicle of the present invention (Claim 2), the entire seat back can be lifted upward with the shaft support portion provided at the upper portion of the seat back with the upper portion as the center of rotation. Thereby, since the electrical equipment arranged on the back surface of the seat back moves to a higher position, it is possible to perform maintenance and inspection with an easy posture, and it is possible to improve maintainability and workability.

  Further, according to the vehicle body structure of the rear engine vehicle of the present invention (Claim 3), by providing the shaft support portion at the lower portion of the seat back, the entire seat back can be brought down to the seat cushion with the lower portion as the rotation center. . Accordingly, the seat back serves as a cover for the seat cushion, so that the seat cushion can be prevented from being dirty or damaged during maintenance and inspection. Further, since the entire seat back is substantially horizontal, the stability when the space is opened is high. Furthermore, the back surface of the seat back can be used as a simple work table, and maintainability and workability can be improved.

  Moreover, according to the vehicle body structure of the rear engine vehicle of the present invention (Claim 4), the extension distance of the wire harness routed from the engine room side is shortened by providing the through hole for the wire harness in the vertical wall. Cost and part weight can be reduced. Moreover, the wire harness can be concealed from the indoor side, and the aesthetics of the room can be improved.

According to the vehicle body structure of the rear engine vehicle of the present invention (Claim 5), the second through hole for the wire harness is provided on the top surface of the engine room, so that hot air from the engine room flows into the space. The operating environment of the electrical equipment can be easily ensured.
Further, according to the vehicle body structure of the rear engine vehicle of the present invention (Claim 6), by providing a gap between the electrical equipment and the seat back using the plate member, the seat back surface when the space portion is closed is provided. Therefore, the electrical equipment can be protected.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 4 are views for explaining a vehicle body structure of a rear engine vehicle according to an embodiment of the present invention, and FIG. 1 shows a vehicle interior of the rear engine vehicle provided with the vehicle body structure according to the present invention. FIG. 2 is a perspective view showing a state in which the space portion of the rear engine vehicle is opened, and FIG. 3 is a cross-sectional view (cross-sectional view taken along line AA in FIG. 1) of the engine room and the seat according to the vehicle body structure. 4 is an enlarged cross-sectional view of the main part.

  5 (a) and 5 (b) are cross-sectional views showing a vehicle body structure as a modified example. (A) shows a rotating shaft disposed under the seat back, and (b) shows a wire harness. The through hole is formed on the top surface of the engine room.

[1. Constitution]
This vehicle body structure is applied to a rear engine type bus vehicle 10 shown in FIG. An engine room 1 is disposed at the rear end of the bus vehicle 10. A partition wall between the engine room 1 and the vehicle compartment is formed in a staircase shape that rises toward the rear of the vehicle, and the seating seat 2 is disposed using this step.

  A horizontal surface 1a, a top surface 1b, and a vertical wall 1c are provided as partition walls forming a stepped portion of the engine room 1. The horizontal surface 1a is a part that becomes a base of the seating surface, and is disposed substantially horizontally. The top surface 1b is a portion disposed rearward and above the vehicle relative to the horizontal plane 1a, and is disposed substantially horizontally in the same manner as the horizontal plane 1a. The storage box for the electrical equipment according to the above-described conventional vehicle body structure is generally fixed on the top surface 1b. Note that the top surface 1b may be provided with a gradient.

The vertical wall 1c is a part that connects the horizontal surface 1a and the top surface 1b in the vertical direction, and the upper end of the vertical wall 1c is inclined slightly toward the rear of the vehicle in accordance with the inclination of the seating seat 2. A heat insulating material layer 1d is formed on the lower surface of the horizontal surface 1a, the top surface 1b, and the vertical wall 1c (inside the engine room 1) to prevent transmission of hot air in the engine room 1 to the cabin.
The seat 2 is a seat disposed at the rearmost portion of the bus vehicle 10 and extends over the entire width of the vehicle interior. The seat 2 includes a seat cushion 2a and a seat back 2b.

  The seat cushion 2a is a portion disposed on the horizontal plane 1a, and is fixed to the horizontal plane 1a with appropriate flexibility to support the occupant's buttocks and thighs. On the other hand, the seat back 2b is a backrest portion that supports the back and waist of the occupant. As shown in FIG. 1, the seat back 2b is divided into three parts in the vehicle width direction, and a handle 2c is provided on the surface of the center seat back 2b on the vehicle compartment side.

Hereinafter, the vehicle body structure related to the central seat back 2b will be described in detail with reference to FIG.
The top surface 1b of the engine room 1 is formed so as to extend forward so that the front end edge protrudes toward the seat back 2b. As shown in FIG. 3, one part of the top surface 1 b extending forward of the vehicle from the vertical wall 1 c is referred to as a protruding surface 3. The back surface of the seat back 2b is close to the tip of the protruding surface 3, and a space 4 surrounded by the vertical wall 1c, the back surface of the seat back 2b, and the protruding surface 3 is formed. Inside the space 4 are housed various electrical equipment 7 such as an electronic control device for controlling the engine, various relays, and fuses.

  The electrical equipment 7 is fixed to both the seat back 2b side and the vertical wall 1c side of the space 4. Among these, the electrical equipment 7 on the seat back 2b side is attached via a plate member 8 as shown in FIG. The plate member 8 is a plate-like pedestal formed in a convex shape in the inner direction of the space portion 4 (rear of the vehicle). By fixing the electrical equipment 7 on the plate member 8, a predetermined gap d is secured with respect to the back surface of the seat back 2b.

The plate member 8 is preferably attached to the vicinity of the upper end portion and the vicinity of the lower end portion on the back surface of the seat back 2b. Or when the frame as a framework is built in seat back 2b, it is preferred to fix in the neighborhood of the frame.
A through hole 6 through which the wire harness 12 connected to the electrical equipment 7 is passed is drilled in the bottom of the vertical wall 1 c inside the space 4. A grommet 6a is interposed around the wire harness 12 inserted through the through hole 6 to block inflow of hot air from the engine room 1 side.

A bracket 11 is fixed on the top surface 1 b of the engine room 1. As shown in FIG. 2, the bracket 11 is provided at the rear of the seat back 2b with substantially the same width as the central seat back 2b, and a pair of hinges 5 (shaft support portions) are attached to the upper end thereof. Yes.
The hinge 5 pivotally supports the upper end portion of the seat back 2 b so as to be rotatable with respect to the vicinity of the front end portion of the protruding surface 3. The rotation axis C of the seat back 2 b by the hinge 5 is oriented horizontally in the vehicle width direction of the bus vehicle 10 in the vicinity of the front end portion of the protruding surface 3. Accordingly, the seat back 2b has a closed posture in which the space portion 4 is closed with respect to the vehicle compartment as shown in FIG. 3, and an open posture in which the space portion 4 is opened to the vehicle compartment side as shown by a broken line in FIG. Can swing up and down.

  As shown in FIG. 2, in the present embodiment, an intermediate portion 12 a that is oriented substantially parallel to the rotation axis C at a position close to the rotation axis C is provided in the middle of the wiring path of the wire harness 12. The wire harness 12 of the intermediate portion 12a is loosely attached to the bracket 11, and can absorb the twist when the seat back 2b is rotated. Portions other than the intermediate portion 12a are routed in a state of being fixed by the fixing bracket 13.

Further, as shown in FIG. 3, a latch-type fixture 9 is fixed to the lower end portion of the seat back 2b. The fixing tool 9 is a fixing tool for fixing the seat back 2b so as not to be inadvertently opened.
As shown in FIG. 4, the fixture 9 includes a hook portion 9a, an engaging portion 9b, and a support shaft 9c. The support shaft 9c is a shaft-like member fixed to the seat back 2b, and a hook portion 9a is rotatably supported with respect to the support shaft 9c. On the other hand, the engaging portion 9b is fixed to the vertical wall 1c. The hook portion 9a is a hook-shaped member, and is provided to engage with the engaging portion 9b by its own weight in the closed posture in which the seat back 2b is closed.

  The operation of the hook portion 9a is performed by putting a hand through the gap between the rear portion of the seat cushion 2a and the lower portion of the seat back 2b. Here, since the contents of the seat cushion 2a and the seat back 2b are made of foamable soft urethane and the skin is made of a flexible material made of vinyl or cloth, a hand can be easily inserted into these gaps, and the outside Is not visible from the hook portion 9a.

[2. Effect]
As shown in FIG. 1, when the seat back 2b is in the closed position, the space 4 is closed with respect to the passenger compartment, so that the electrical equipment 7 disposed inside the space 4 can be concealed. , Can be protected from inadvertent access by passengers and contact with luggage. Further, the space above the top surface 1b of the engine room 1 can be used, and the space can be effectively used as a loading platform.

  Further, even if the load when the passenger is seated on the seat 2 acts on the seat back 2b, a gap d is provided between the back surface of the seat back 2d and the electrical equipment 7 as shown in FIG. Therefore, the deflection of the seat back 2 d is absorbed by the plate member 8. Thus, by fixing the electrical equipment 7 to the back surface of the seat back 2d through the plate member 8, the electrical equipment 7 can be more reliably protected.

  During maintenance and inspection of the electrical equipment 7, when the handle 2c is pulled forward while operating the fixture 9 to release the engagement between the hook portion 9a and the engagement portion 9b, the seat back 2b is centered on the rotation axis C. And the space 4 is opened as shown in FIG. That is, the seat back 2 b functions as an opening / closing door of the space portion 4. In this way, the electrical device 7 accommodated in the space 4 can be accessed by a simple operation of rotating the seat back 2b, and good maintainability can be obtained.

  In addition, when the seat back 2b is in the open posture, the electrical equipment 7 disposed on the back surface of the seat back 2b moves to a higher position, so that maintenance and inspection can be performed in an easy posture, and maintainability and workability are improved. Can be improved. Furthermore, the space part 4 formed as a gap between the staircase shape of the engine room 1 and the seat back 2b can be used as an arrangement space for the electrical equipment 7, and the space efficiency of the vehicle can be enhanced.

  Since the wire harness 12 of the electrical equipment 7 is introduced from the through hole 6 drilled in the vertical wall 1c inside the space portion 4, the extension distance of the wire harness 12 routed from the engine room 1 side is shortened. Cost and part weight can be reduced. Moreover, the wire harness 12 can be concealed from the passenger compartment, and the aesthetics of the passenger compartment can be improved. Further, since the intermediate portion 12a of the wire harness 12 is oriented and loosely oriented substantially parallel to the rotation axis C at a position close to the rotation axis C, it effectively absorbs torsion when the seat back 2b is opened and closed. Can do.

[3. Others]
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the above-mentioned embodiment etc., It can implement in various deformation | transformation in the range which does not deviate from the meaning of this invention.
For example, in the above-described embodiment, the hinge 5 pivotally supports the upper portion of the seat back 2b with respect to the protruding surface 3, but instead of such a configuration, the hinge 5 'is provided below the seat back 2b, It is good also as a structure which pivotally supports the lower end part of the back | bag 2b with respect to the engine room 1 side, such as the vertical wall 1c and the horizontal surface 1a. That is, as shown by a broken line in FIG. 5A, the seat cushion 2a is tilted to the seat cushion 2a with the lower portion of the seat back 2b as the center of rotation.

  With such a configuration, the seat back 2b functions as a protective cover for the seat cushion 2a, so that the seat cushion 2a can be prevented from being dirty or damaged during maintenance inspection. Further, since the entire seat back 2b is substantially horizontal, the stability when the space 4 is opened is high. Furthermore, the back surface of the seat back 2b can be used as a simple work table, and maintainability and workability can be improved.

  Moreover, the wiring path | route of the wire harness 12 is not limited to the thing of the above-mentioned embodiment. For example, as shown in FIG. 5B, a configuration may be adopted in which a through hole 6 ′ (second through hole) is provided in the top surface 1 b of the engine room 1 and the wire harness 12 is passed therethrough. In this case, it is possible to make it difficult for hot air from the engine room 1 to flow into the space portion 4, and the operating environment of the electrical equipment 7 can be easily ensured.

Moreover, although the structure which fixes the seat back 2b using the fixing tool 9 was illustrated in the above-mentioned embodiment, it replaces with this and you may use well-known means, such as bolt fastening.
Moreover, although what applied this invention to the bus vehicle 10 was illustrated in the above-mentioned embodiment, the application object of this invention is not limited to this, The rear engine motor vehicle and box type which were arrange | positioned at the vehicle rear end Applicable to vehicles and the like.

It is a perspective view which shows the vehicle interior of the rear engine vehicle provided with the vehicle body structure which concerns on this invention. It is a perspective view which shows the state which open | released the space part of the rear engine vehicle. It is sectional drawing (AA sectional drawing of FIG. 1) of the engine room and seating seat which concern on this vehicle body structure. It is an expanded sectional view of the engine room and seating seat concerning this body structure. It is sectional drawing which shows the vehicle body structure as a modification, (a) is what the rotating shaft is arrange | positioned under the seat back, (b) is what the through-hole of the harness was formed in the top surface of the engine room Indicates.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine room 1a Horizontal surface 1b Top surface 1c Vertical wall 1d Thermal insulation material 2 Seating seat 2a Seat cushion 2b Seat back 2c Handle 3 Protruding surface 4 Space part 5 Hinge (shaft support part)
6 Through-hole 6a Grommet 7 Electrical equipment 8 Plate member 9 Fixing tool 10 Bus vehicle 11 Bracket 12 Harness 13 Fixing bracket

Claims (6)

A horizontally disposed horizontal plane; a top surface disposed behind and above the horizontal plane; and a vertical wall vertically connecting the horizontal plane and the top surface to the rear of the vehicle. An engine room which is formed in a staircase shape that rises toward the rear and is arranged at the rear end of the vehicle;
A seat cushion disposed on the horizontal plane for supporting the occupant's buttocks and a seat back disposed in front of the vertical wall for supporting the occupant's back, and arranged in accordance with the staircase shape of the engine room. Seated seat,
A projecting surface formed so as to project forward from the front edge of the top surface to the seat back;
Surrounded by the vertical wall, the seat back, and the protruding surface, a space in which electrical equipment for driving the engine is disposed,
A vehicle body structure for a rear engine vehicle, comprising: a shaft support portion for pivotally supporting the seat back with respect to the engine room. The vehicle body structure for a rear engine vehicle according to claim 1, wherein the shaft support portion pivotally supports an upper portion of the seat back with respect to a vicinity of a front end portion of the projecting surface. The vehicle body structure for a rear engine vehicle according to claim 1, wherein the shaft support portion pivotally supports a lower portion of the seat back with respect to a lower portion of the vertical wall or the horizontal plane. The vehicle body structure for a rear engine vehicle according to any one of claims 1 to 3, further comprising a through hole formed in the vertical wall and through which a wire harness connected to the electrical equipment is inserted. . The rear engine vehicle according to any one of claims 1 to 3, further comprising a second through hole formed on the top surface and allowing a wire harness connected to the electrical equipment to pass therethrough. Body structure. The board according to any one of claims 1 to 5, further comprising a plate member disposed inside the space portion with a predetermined gap with respect to the seat back and fixed with the electrical equipment. The vehicle body structure of a rear engine vehicle according to any one of the preceding claims.

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