JP6439402B2 - Cabover vehicle structure - Google Patents

Description

  The present invention relates to a cab-over vehicle structure in which an engine room is disposed below a front seat.

  As a vehicle such as an automobile, there is a so-called cab-over vehicle in which an engine room is disposed below a front seat such as a driver's seat. Patent Document 1 describes a cab-over vehicle structure including a floor panel that forms a vehicle floor surface and a frame that is joined to the lower surface of the floor panel. The frame is a member corresponding to each of a front portion, a side portion, and a rear portion of the engine room, and has an inner flange on the engine room side and an outer flange on the vehicle exterior side.

  In the cab-over vehicle structure described in Patent Document 1, the frame is joined to the floor panel via the inner and outer flanges of the frame, thereby forming a closed cross section together with the floor panel. In Patent Document 1, since the inner flange of the frame extends upward, it does not protrude toward the engine side, so that the storage capacity of the engine can be increased, and the outer flange is bent toward the outside of the vehicle. It is said that the rigidity of can be increased.

JP-A-6-99856

  The technology described in Patent Document 1 merely increases the rigidity of the frame by the shape and flange of the frame that partitions the engine room, and the configuration for transmitting the load from the front of the vehicle that accompanies a vehicle collision to the rear side of the vehicle. Not disclosed. In cab-over vehicles, when a load from the front of the vehicle accompanying a vehicle collision is received, the load is efficiently transmitted to the rear side of the vehicle, thereby making it difficult for the passenger compartment to be deformed and securing an interior space. It is important to improve performance.

  In view of such a problem, an object of the present invention is to provide a cab-over vehicle structure that can efficiently transmit a load received from the front of the vehicle to the rear side of the vehicle.

  In order to solve the above-described problem, a typical configuration of a cab over vehicle structure according to the present invention is a cab over vehicle structure in which an engine room is disposed below a front seat. A vertical wall portion that rises upward from the rear end of the floor panel that forms the floor surface, a side frame that extends in the vehicle front-rear direction along the lower surface of the side edge of the floor panel, and extends into the engine room under the vertical wall portion; A reinforcement that is attached to the upper surface of the floor panel in front of the vehicle from the vertical wall portion and overlaps the side frame in plan view, and a cover that is attached to the upper surface of the portion of the side frame that extends into the engine room, Each having a first convex shape and a second convex shape that are continuously formed in the longitudinal direction of the vehicle. The front end parts and the cover is characterized in that it is joined respectively to the vertical wall portion.

  According to the above configuration, in a so-called cab-over vehicle in which the engine room is disposed below the driver's seat, the side frame extends continuously from the front and back of the vertical wall portion, and extends from the floor panel to the engine room. . The reinforcement and the cover have a convex shape in a sectional view, and the rear end portion of the reinforcement and the front end portion of the cover are joined with the vertical wall portion interposed therebetween. Therefore, the rigidity of the reinforcement and the cover is enhanced by the convex shape, and the convex shape continuously extends before and after the vertical wall portion so as to overlap the side frame in plan view.

  Therefore, the load from the front of the vehicle at the time of the vehicle collision is not only transmitted to the vehicle rear side by the side frame, but also transmitted from the reinforcement to the cover through the vertical wall portion. Therefore, according to the above configuration, the load received from the front of the vehicle can be efficiently transmitted to the rear side of the vehicle, so that the passenger compartment is hardly deformed, the interior space is secured, and the occupant protection performance can be enhanced.

  The vertical wall portion and the side frame are preferably inclined at different angles toward the outside in the vehicle width direction toward the rear of the vehicle in a plan view and cross each other. Thereby, the load received from the front of the vehicle is distributed and transmitted in different directions along the inclination of the vertical wall portion and the side frame in plan view. Therefore, the load from the front of the vehicle can be efficiently transmitted to the rear side of the vehicle.

  The cab over vehicle structure includes an engine room front panel joined to the vertical wall portion and extending further upward to form a front side wall surface of the engine room, and joined to the vehicle width direction outer side of the engine room front panel and extended rearward of the vehicle. It is preferable to further include an engine room side panel that forms a side wall surface of the room, and a center pillar that is fixed to the engine room side panel and forms a part of the side wall of the vehicle body. Thus, the load from the front of the vehicle is transmitted from the vertical wall portion to the engine room front panel in addition to the side frames, and further distributed and transmitted to the vehicle body side wall on the vehicle rear side via the engine room side panel. Therefore, the load from the front of the vehicle can be efficiently transmitted to the rear side of the vehicle.

  The cab-over vehicle structure may further include a cross member that forms a rear side wall surface of the engine room and is fixed to the center pillar, and a rear end of the engine room side panel is fixed to the cross member. Thereby, the load from the front of the vehicle is distributed not only to the center pillar but also to the cross member from the engine room side panel. For this reason, the load from the vehicle front can be efficiently transmitted to the vehicle rear side. The cross member can prevent the engine room side panel and the center pillar from being deformed inside the vehicle at the time of a vehicle collision.

  The front end portion of the cover is preferably joined to the engine room front panel with the vertical wall portion interposed therebetween. Thereby, in the upper part of a vertical wall part, the front-end part of a cover and an engine room front panel can be piled up and joined. Note that the rear end portion of the reinforcement and the front end portion of the cover are overlapped and joined to the lower portion of the vertical wall portion. That is, at the upper and lower portions of the vertical wall portion, it is possible to perform strong bonding by stacking three members. For this reason, even if the rear end of the reinforcement is not directly joined to the engine room front panel, the load from the front of the vehicle is reliably distributed and transmitted to the engine room front panel via the vertical wall. The

  The rear end portion of the cover is curved upward, and the rear end portion may be joined to an upper member fixed to the cross member. Thus, when the load from the front of the vehicle is transmitted to the cover, the load is distributed and transmitted from the rear end portion to the cross member via the upper member. Furthermore, since the rear end of the side frame is joined to the rear end portion of the cover, the rear end portion rises upward, so that the cross section along the vehicle width direction can be set large in the vehicle vertical direction, which increases the rigidity. it can. Therefore, the load from the front of the vehicle can be transmitted efficiently and reliably to the rear side of the vehicle.

  ADVANTAGE OF THE INVENTION According to this invention, the cab over vehicle structure which can transmit efficiently the load received from the vehicle front to the vehicle rear side can be provided.

It is a figure which shows the cab over vehicle structure in this embodiment. It is a figure which shows the state which looked at the side part of the cab over vehicle structure of FIG. 1 from the vehicle inner side. It is a figure which shows the state which looked at the cab over vehicle structure of FIG. 1 from diagonally upward of the vehicle front side. It is a figure which shows the AA cross section and BB cross section of the cab over vehicle structure of FIG. 1 and FIG. It is a figure which shows the end surface along CC line of the cab over vehicle structure of FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

  FIG. 1 is a diagram showing a cab over vehicle structure in the present embodiment. In the figure, the cab over vehicle structure is shown as viewed from above. FIG. 2 is a diagram illustrating a state in which the side portion of the cab-over vehicle structure in FIG. 1 is viewed from the vehicle inner side. In the following, arrows X and Y shown in the drawings respectively indicate the vehicle front side and the vehicle width direction outer side (vehicle right side). The vehicle to which the cab over vehicle structure in the present embodiment is applied is a so-called cab over vehicle in which an engine room is arranged below a front seat (for example, a driver's seat) (not shown).

  As shown in FIG. 1, the cab-over vehicle structure 100 includes a dash panel 102 that is located on the front side of the vehicle and partitions, for example, a vehicle compartment, and a floor panel 104 that forms a vehicle compartment floor. The dash panel 102 is joined to the front end 106 of the floor panel 104 and extends in the vehicle width direction. The cab over vehicle structure 100 further includes a vertical wall portion 108 (see FIG. 2), a front floor frame (side frame 110), a front floor side panel reinforcement (reinforce 112), and a front frame rear cover (cover 114). Is provided.

  As shown in FIG. 2, the vertical wall portion 108 rises upward from the rear end 116 of the floor panel 104. An engine room 118 is arranged on the vehicle rear side of the vertical wall portion 108. A region D shown in FIG. 1 shows a passenger protection area, that is, a range of the interior space of the passenger compartment in the vehicle front-rear direction. For example, a cross forming the rear wall surface 120 of the engine room 118 from the dash panel 102 on the vehicle front side. The member 122 is reached.

  As shown in FIG. 2, the side frame 110 is a member that extends in the vehicle front-rear direction along the lower surface of the side edge of the floor panel 104, extends under the vertical wall portion 108 into the engine room 118, and further crosses. It extends to the vicinity of the member 122. The vertical wall portion 108 and the side frame 110 are inclined at different angles toward the outside in the vehicle width direction toward the rear of the vehicle in a plan view shown in FIG.

  The reinforcement 112 is attached to the upper surface 104a of the floor panel 104 in front of the vehicle from the vertical wall portion 108, and overlaps the side frame 110 in plan view as shown in FIG. The cover 114 is attached to the upper surface 110b of the portion 110a extending into the engine room 118 of the side frame 110. An engine mount front bracket 124 is joined to the lower side of the side frame 110 to which the cover 114 is attached.

  The engine room 118 is partitioned by an engine room front panel 126, an engine room side panel 128 and the cross member 122. That is, the engine room front panel 126 is joined to the vertical wall portion 108 and extends further upward to form the front side wall surface 130 of the engine room 118. The engine room side panel 128 is joined to the vehicle width direction outer side of the engine room front panel 126 and extends rearward of the vehicle, and forms a side wall surface 132 of the engine room 118. Further, the side portion 128a of the engine room side panel 128 is fixed to a center pillar 134 that forms a part of the side wall of the vehicle body. Further, the rear end 128 b of the engine room side panel 128 is fixed to the cross member 122.

  The cross member 122 is fixed to the center pillar 134, and a rear floor front upper member (upper member 136) is further fixed. As shown in FIG. 2, a rear end portion 138 of the cover 114 that is curved upward is joined to the upper member 136. Therefore, the side frame 110 rises upward at the location 110c where the rear end portion 138 of the cover 114 is joined, and the cross section along the vehicle width direction can be set large in the vehicle vertical direction, and the rigidity is increased.

  As described above, in the cab-over vehicle structure 100, the side frame 110 is continuous in front and rear of the vertical wall portion 108 in the region D, and the reinforcement 112 is provided in front and rear of the vertical wall portion 108 so as to overlap the side frame 110 in plan view. And the cover 114 extends continuously.

  FIG. 3 is a diagram illustrating a state where the cab over vehicle structure 100 of FIG. 1 is viewed from an obliquely upper side on the vehicle front side. In the drawing, the floor panel 104, the reinforcement 112, and the cover 114 are omitted, and the engine room front panel 126 and the engine room side panel 128 that define the engine room 118 are indicated by phantom lines.

  The front suspension frame bracket 140 is joined to the side frame 110 at a position overlapping the AA line shown in FIGS. 1 and 2 inside the side frame 110, and the front frame rear reinforcement 142 is positioned at a position overlapping the BB line. Are joined.

  FIG. 4 is a diagram showing an AA cross section and a BB cross section of the cab over vehicle structure 100 of FIGS. 1 and 2. FIG. 5 is a diagram showing an end surface along the line CC of the cab over vehicle structure 100 of FIG.

  As shown in the AA cross section of FIG. 4A, the reinforcement 112 has a first convex shape 144 that is convex upward, and forms a closed cross section with the side frame 110 with the floor panel 104 interposed therebetween. . As shown in the BB cross section of FIG. 4B, the cover 114 has a second convex shape 146 that protrudes upward, and forms a closed cross section together with the side frame 110. Further, as shown in FIG. 1, the first convex shape 144 of the reinforcement 112 and the second convex shape 146 of the cover 114 are respectively formed continuously in the vehicle front-rear direction.

  Furthermore, the rear end portion 150 of the reinforcement 112 and the front end portion 152 of the cover 114 are respectively bent upward and joined to the vertical wall portion 108 as shown in FIG. Therefore, at the lower part of the vertical wall portion 108, the rear end portion 150 of the reinforcement 112 and the front end portion 152 of the cover 114 are overlapped and joined. Further, the front end portion 152 of the cover 114 is joined to the engine room front panel 126 with the upper portion of the vertical wall portion 108 interposed therebetween. Therefore, at the upper portion of the vertical wall portion 108, the front end portion 152 of the cover 114 and the engine room front panel 126 are overlapped and joined. That is, at the upper part and the lower part of the vertical wall part 108, it is possible to perform strong joining by stacking three members. As shown in the drawing, the rear end portion 150 of the reinforcement 112 is not directly joined to the engine room front panel 126 but indirectly joined via the vertical wall portion 108.

  Hereinafter, the case where the cab over vehicle structure 100 receives a load from the front of the vehicle at the time of a vehicle collision will be described. In the cab-over vehicle structure 100, the reinforcement 112 and the cover 114 are enhanced in rigidity by a convex shape, and the convex shape continuously extends before and after the vertical wall portion 108 so as to overlap the side frame 110 in plan view. ing. For this reason, the load from the front of the vehicle accompanying a vehicle collision is not only transmitted to the vehicle rear side by the side frame 110 but also transmitted from the reinforcement 112 to the cover 114 via the vertical wall portion 108.

  Further, the vertical wall portion 108 and the side frame 110 are inclined at different angles and intersect each other. For this reason, the load received from the front of the vehicle is distributed and transmitted in different directions along the inclination of the vertical wall portion 108 and the side frame 110 in plan view.

  Further, the engine room front panel 126 joined to the vertical wall portion 108 is joined to the engine room side panel 128, and the engine room side panel 128 is fixed to a center pillar 134 that forms a vehicle body side wall on the rear side of the vehicle. Yes. Therefore, the load from the front of the vehicle is transmitted from the vertical wall portion 108 to the engine room front panel 126 in addition to the side frame 110, and further distributed and transmitted to the vehicle body side wall on the rear side of the vehicle via the engine room side panel 128. Is done.

  The rear end 128 a of the engine room side panel 128 is fixed to the cross member 122. For this reason, the load from the front of the vehicle is distributed not only to the center pillar 134 but also to the cross member 122 from the engine room side panel 128. The cross member 122 can prevent the engine room side panel 128 and the center pillar 134 from being deformed inside the vehicle at the time of a vehicle collision.

  Further, the upper and lower portions of the vertical wall portion 108 can be firmly joined by overlapping three members. Therefore, even when the rear end portion 150 of the reinforcement 112 is not directly joined to the engine room front panel 126, the load from the front of the vehicle is surely applied to the engine room front panel 126 via the vertical wall portion 108. Is distributed and transmitted.

  Further, the rear end portion 138 of the cover 114 is curved upward, and the rear end portion 138 is joined to the upper member 136 fixed to the cross member 122. For this reason, when the load from the front of the vehicle is transmitted to the cover 114, it is distributed and transmitted from the rear end portion 138 to the cross member 122 via the upper member 136.

  Therefore, according to the present embodiment, since the load received from the front of the vehicle can be efficiently transmitted to the rear side of the vehicle, the passenger compartment is hardly deformed, the interior space is secured, and the occupant protection performance can be enhanced.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  The present invention can be used for a cab-over vehicle structure in which an engine room is disposed below a front seat.

DESCRIPTION OF SYMBOLS 100 ... Cab over vehicle structure, 102 ... Dash panel, 104 ... Floor panel, 108 ... Vertical wall part, 110 ... Side frame, 112 ... Reinforce, 114 ... Cover, 118 ... Engine room, 120 ... Rear side wall surface, 122 ... Cross member, 124 ... Engine mount front bracket, 126 ... Engine room front panel, 128 ... Engine room side panel, 130 ... Front side wall, 132 ... Side wall surface, 134 ... Center pillar, 136 ... Upper member, 138, 150 ... Rear end , 140 ... front suspension frame bracket, 142 ... front frame rear reinforcement, 144 ... first convex shape, 146 ... second convex shape, 152 ... front end

Claims (6)

In the cab-over vehicle structure in which the engine room is arranged under the front seat,
The cab over vehicle structure is
A vertical wall that rises upward from the rear end of the floor panel forming the passenger compartment floor,
A side frame extending in the vehicle front-rear direction along a lower side edge of the floor panel and extending into the engine room through the vertical wall portion;
Reinforce which is attached to the upper surface of the floor panel in front of the vehicle from the vertical wall and overlaps the side frame in plan view;
A cover attached to an upper surface of a portion of the side frame that extends into the engine room,
The reinforcement and the cover each have a first convex shape and a second convex shape that are continuously formed in the vehicle longitudinal direction, and the rear end portion of the reinforcement and the front end portion of the cover are A cab-over vehicle structure characterized by being joined to each of the vertical wall portions.   The vertical wall portion and the side frame are inclined at different angles toward the outer side in the vehicle width direction toward the rear of the vehicle in plan view, and intersect each other. Cab over vehicle structure. The cab over vehicle structure is
An engine room front panel joined to the vertical wall portion and extending further upward to form a front side wall surface of the engine room;
An engine room side panel that is joined to the vehicle width direction outer side of the engine room front panel and extends rearward of the vehicle to form a side wall surface of the engine room;
The cab over vehicle structure according to claim 1 or 2, further comprising a center pillar to which the engine room side panel is fixed and forms a part of a side wall of the vehicle body. The cab over vehicle structure further includes a cross member that forms a rear side wall surface of the engine room and is fixed to the center pillar.
The cab over vehicle structure according to claim 3, wherein a rear end of the engine room side panel is fixed to the cross member. The cab over vehicle structure according to claim 4, wherein a rear end portion of the cover is curved upward, and the rear end portion is joined to an upper member fixed to the cross member. The cab-over vehicle structure according to any one of claims 3 to 5 , wherein a front end portion of the cover is joined to the engine room front panel with the vertical wall portion interposed therebetween.

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