JP2005206049A - Vehicle body front structure of cab-over vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve a protection characteristic against an occupant and secure a wide foot space of the occupant to improve comfort by restricting the entering of a front panel into a driver's room when the vehicle collides at is front (including a head-on collision and an offset collision), in a vehicle body front structure of a cab-over vehicle. <P>SOLUTION: A substantial hat-shaped reinforcing member 27 as viewed in an upward or downward section and other members arranged along a front panel 5 in an upward or downward direction are installed at a compartment of a part at least opposing a front seat 9 of the front panel 5. The upper end of the reinforcing member 27 is connected to a cross member 33 arranged in a vehicle width direction in the compartment and in turn, the lower end 27U of the reinforcing member 27 is extended to a location near a floor panel 17 and connected to a bracket member 39. The bracket member 39 is also connected to either a side frame 23 or a second cross member 35. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a front body structure of a cab over type vehicle.

  A cab-over type vehicle has a structure in which a driver or a passenger in the front passenger seat sits on a seat installed in the front part of the vehicle. It is known that the driver and the passenger on the front passenger seat are easily damaged.

  On the other hand, for example, a front floor structure of a cab-over type automobile as in Patent Document 1 below has been proposed. The structure disclosed in this document has a tunnel-shaped center reinforcement that connects the front panel and the rising part of the floor panel in the center of the front part of the floor panel, and it collides with an obstacle with a high minimum ground clearance. The rear end of the center reinforcement comes into contact with a power train (not shown) such as a radiator and an engine, and the reaction force prevents the rear movement of the front panel, thereby reducing the reduction in the foot space of the seated occupant. (See FIG. 7).

  In such a structure, the front panel near the center in the vehicle width direction intrudes toward the driver at the time of a frontal collision (collision with an obstacle near the vehicle center in the vehicle width direction) of the vehicle frontal collision. Although it seems to have an effect of suppressing the coming, the front panel is the driver at the time of offset collision (collision with an obstacle at the front part of the vehicle and in the vicinity of the side in the vehicle width direction) among the frontal collisions of the vehicle. The effect of suppressing the intrusion toward the vehicle and suppressing the damage to the driver and the passenger on the front passenger seat can hardly be expected.

  The reason for this is that in an offset collision, the collision area is smaller than in a frontal collision, and the input load due to the collision is concentrated on the driver's seat or passenger's seat, and accordingly, it is disposed in front of the driver's seat or passenger's seat. This is because the front panel is large and easily enters the cab.

  Further, in the structure as shown in Patent Document 1 below, a tunnel-shaped center reinforcement extending in the front-rear direction is provided in the vicinity of a substantially central portion in the vehicle width direction on the floor panel. There is also a problem that the nature is bad.

  Therefore, in front of the vehicle (frontal collision and offset collision), the front panel can be prevented from entering the driver's cab and the occupant's protection can be improved. A vehicle body front structure of a cab over type vehicle is desired.

JP-A-9-328082

  As described above, in the vehicle body front structure of a cab-over type vehicle, the present invention suppresses intrusion of the front panel into the driver's cabin at the time of frontal collision (frontal collision and offset collision) of the vehicle, and improves passenger protection. It is an object to improve the comfortability by ensuring a wide space for passengers.

  The first configuration of the vehicle body front structure of the cab-over type vehicle according to the present invention is such that the cab is disposed above the engine and faces the seat disposed in the vehicle width direction in the cab. The front panel lower end surface that extends across the vehicle width direction at the front of the vehicle and the front end of the floor panel, which is the floor of the cab, are arranged close to each other, and the vehicle front and rear are located below the floor panel. Vehicle body front structure of a cab-over type vehicle in which a pair of left and right side frames extending in the vehicle width direction is disposed, and at least a portion of the front panel facing the seat is on the vehicle interior side in the vertical direction along the front panel. A reinforcing member is provided, and an upper end portion of the reinforcing member is connected to a cross member arranged in the vehicle width direction in the vehicle interior, while a lower end portion of the reinforcing member is a lower portion of the front panel. Extends with up to near the floor panel is connected, it is disposed on the lower surface of the floor panel, in which concatenated bracket member is provided in the lower portion of the side frame and the reinforcing member.

  According to the first configuration, at least a portion of the front panel that faces the seat has a reinforcing member disposed in the vertical direction along the front panel on the vehicle interior side. An upper end portion of the reinforcing member is connected to a cross member arranged in the vehicle width direction in the vehicle interior, and a lower end portion thereof is connected to a lower portion of the front panel. Further, the lower end portion of the reinforcing member is also connected to the bracket member. The bracket member is connected to the side frame. In other words, the reinforcing member has a structure in which the upper end portion and the lower end portion thereof are connected to different vehicle body structural components, so that the reinforcing member sits on the seat at the time of a frontal collision (at the time of a frontal collision and an offset collision). The front panel can be prevented from entering toward the occupant side, and the occupant's protection can be improved. Note that the lower end portion of the reinforcing member may be directly connected to the bracket member, or the same effect can be obtained even in a structure connected to the bracket member via the floor panel.

  Further, according to the first configuration, the reinforcing member is provided on the vehicle interior side along the front panel, and the lower end portion of the reinforcing member is a pair of left and right side frames extending in the vehicle front-rear direction below the floor panel. Since the structure is connected to the bracket member connected to the vehicle, a structure is provided in which a member protruding upward from the floor panel at the foot of the occupant (for example, a tunnel-shaped center reinforcement for reinforcement as in Patent Document 1) is provided. Unlike the above, it is possible to secure a wide space for passengers and improve comfort.

  According to a second configuration of the present invention, in the first configuration described above, the front panel has a curved shape that protrudes and curves toward the front side of the vehicle in a cross-sectional view in the vehicle width direction. It is a curved shape.

  According to the second configuration, the reinforcing member and the front panel have a shape protruding and curved toward the front side of the vehicle. The reinforcing member is arranged in the vertical direction along the vehicle interior side of the front panel, and has a curved shape so that the vicinity of the central portion in the vertical direction protrudes toward the front side of the vehicle. An obstacle collides with the front panel in the vicinity where the reinforcing member is installed, since its upper end is connected to the cross member and its lower end is connected to the bracket member and the side frame via the floor panel. Thus, even if an input load acts toward the driver's seat side with respect to the reinforcing member of the portion protruding forward of the vehicle due to the curved shape, the load is distributed and transmitted in the direction of the upper end portion and the lower end portion. As a result, it is possible to suppress the deformation of the front panel and the reinforcing member that are about to enter the driver's seat side. That is, it is possible to further enhance the effect of suppressing the intrusion of the front panel into the driver's cabin by the first configuration and improving the occupant protection.

  According to a third configuration of the present invention, the bracket member is disposed on the vehicle lower side from the cross member, and is connected to the side frame via a second cross member that connects the pair of side frames. It is.

  According to the third configuration, the bracket member is coupled to the side frame via the second cross member that couples the pair of left and right side frames in the vehicle width direction extending in the vehicle front-rear direction below the floor panel. Structured. Therefore, the bracket member disposed at the lower end of the reinforcing member is not limited to a frontal collision, but also to a side frame and a pair of loads for a load input in the vehicle longitudinal direction and the vehicle width direction during an offset collision. As a result, the lower end of the reinforcing member suppresses the intrusion of the front panel and the reinforcing member itself into the cab of the occupant. Protection can be improved.

  According to a fourth configuration of the present invention, the reinforcing member has a substantially hat-shaped cross section when viewed in the vertical direction, and a plurality of reinforcing members are arranged at intervals in the vehicle width direction so as to correspond to the front of the occupant.

  According to the fourth configuration, since the reinforcing member has a substantially hat-shaped cross section when viewed in the vertical direction, its three-dimensional structure provides extremely higher rigidity than that of a flat reinforcing member, and corresponds to the front of the occupant. Since a plurality of highly rigid reinforcing members are arranged at intervals in the vehicle width direction, the front panel and the reinforcing members themselves can be prevented from entering the driver's cabin at the time of a frontal collision, thereby protecting passengers. Improves.

  According to a fifth configuration of the present invention, a bracket member is disposed at the lower end portion of the reinforcing member, and the bracket member extends in the vehicle front-rear direction and is configured in a plate shape disposed in the vehicle vertical direction. Is.

  According to the fifth configuration, the bracket member is disposed at the lower end portion of each of the plurality of reinforcing members, extends in the vehicle front-rear direction, and has a plate shape disposed in the vehicle vertical direction, so the vehicle front-rear direction In the case of a frontal collision, the bracket member can prevent the front panel and the reinforcing member itself from entering the driver's cab and improve passenger protection. Can be further played.

  As described above, according to the present invention, in the front body structure of a cab-over type vehicle, the front panel can be prevented from entering the driver's cabin at the time of frontal collision (frontal collision and offset collision) of the vehicle, and passenger protection can be improved. At the same time, it is possible to secure a wide space for passengers and improve comfort.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a side view showing a cabover type vehicle according to the present embodiment, FIG. 2 is a view showing a front surface of the vehicle shown in FIG. 1, and FIG. 3 is a cross-sectional view taken along line AA of the reinforcing member shown in FIG. 4 is a diagram showing a cross section taken along the line BB in FIG. 2, FIG. 5 is a diagram showing a cross section taken along the line CC in FIG. 2, and FIG. 6 is a perspective view of the bracket member.

  According to FIG. 1, a cabover type vehicle 1 is provided with a front bumper 3 extending in the vehicle width direction at the lowermost front portion thereof, and a front panel 5 extending in the vehicle width direction is provided above the front bumper 3. ing. A front window glass 7 is disposed and fixed on the upper portion of the front panel 5. In addition, the code | symbol 11 in FIG. 1 is a pair of front doors on either side, and has shown with the virtual line in order to demonstrate the inside of the cab R.

  A front seat 9 is provided so as to face the front panel 5 and the front window glass 7. The front seat 9 has a driver seat and a passenger seat arranged side by side in the vehicle width direction. In the following description, the front seat 9 is referred to as a driver seat or a passenger seat without distinction.

  In addition, an engine 13 is disposed with a floor panel 17 sandwiched between the front seat 9 and the driver seat and the passenger seat, which are approximately in the middle. An occupant's feet seated on the front seat 9 are placed on the floor panel 17 in front of the front seat 9, and the front portion of the floor panel 17 extends forward while facing slightly upward. The floor panel front end portion 17F is further bent downward along the lower end portion 5u of the front panel 5, and as shown in FIGS. 4 and 5, the lower end portion of the front panel 5 is formed. It is connected to 5u by welding (X mark).

  Further, in front of the front seat 9, a steering (not indicated) and an instrument panel 15 are disposed, and the front panel 5, the front window glass 7, the front seat 9, the floor panel 17, and a pair of left and right front doors 11. And the space surrounded by the roof member (not indicated) is the cab R.

  A bumper reinforcement 19 extending in the vehicle width direction is disposed inside the rear of the front bumper 3, and an impact absorbing frame (so-called crash tube) 21 extending in the vehicle front-rear direction is connected to the rear part of the bumper reinforcement 19. Further, a side frame 23 extending in the vehicle front-rear direction is connected to the rear end portion of the shock absorbing frame 21.

  The pair of left and right side frames 23 are provided in the vehicle width direction, and the front end of the side frame 23 is located slightly beyond the lower end of the front panel 5.

  Next, the structure of the reinforcing member according to the present invention will be described with reference to FIG. Note that FIG. 2 shows only the left side when viewed from the front, but it is preferable that the right side is also provided with a symmetric structure as described below. In FIG. 2, the bumper reinforcement 19 disposed and fixed behind the front bumper 3 and at the front portion of the shock absorbing frame 21 is omitted.

  According to FIG. 2, on the cab R side of the front panel 5 in the vehicle 1, three reinforcing members 25, 27, 29 are arranged in the vertical direction at predetermined intervals so as to face the front seat 9. It extends.

  These three reinforcing members 25, 27 and 29 each extend in the vertical direction along the shape of the front panel 5 (see FIGS. 4 and 5), but the vertical sectional view thereof is substantially a hat as shown in FIG. It is formed in a shape. 3 shows a cross-sectional view of the reinforcing member 25 in the vertical direction from the AA cross section in FIG. 2, the other reinforcing members 27 and 29 have a substantially hat shape in the same manner.

  Here, the shape of the reinforcing member 25 will be described in more detail with reference to FIG. 3. The reinforcing member 25 is a vehicle from the plane portion 25 a extending in the vehicle width direction so as to face the front seat and the left and right ends of the plane portion 25 a. The standing surface portions 25b and 25c extending forward, and the joint surface portion 25e that is bent from the standing surface portions 25b and 25c so as to extend outward in the vehicle width direction, and has a shape along the inner surface 25a of the front panel 5. 25d. The joining surface portions 25e and 25d are joined to the inner surface 25a of the front panel 5 via a sealer material 31.

  Note that not all of the joining surface portions 25e and 25d are joined to the inner surface 25a of the front panel 5 via the sealer material 31. This will be described with reference to another reinforcing member 27. As shown in FIG. 4, a lower portion than the upper end portion 3a of the front bumper 3, that is, the vicinity of the lower end portion 27U that is covered by the front bumper 3 and cannot be seen from the front of the vehicle, It is connected by welding at points (indicated by X).

  Therefore, even when the front panel 5 is deformed and invades toward the vehicle interior side at the time of a frontal collision, the reinforcing members 25, 27, and 29 have a hat shape in cross section having the above-described structure. Since the vicinity of the lower end portions of 27 and 29 are connected to the front panel 5 by welding, deformation hardly occurs and occupant safety can be improved.

  Further, according to FIG. 2, the upper end portion of the reinforcing member 25 is connected to the upper cross member 33 extending in the vehicle width direction by welding or a fastening member. The same applies to the reinforcing members 27 and 29. An end 33a in the vehicle width direction of the upper cross member 33 is connected to the door hinge pillar DP.

  Furthermore, the lower ends of the reinforcing members 25, 27, and 29 extend to the vicinity of the floor panel front end 17F. The bracket members 37, 39, sandwiching the front end portion 17F of the floor panel 17 in correspondence with the lower end portions (the lower end portion 27U of the reinforcing member 27 in FIG. 4 and the lower end portion 29U of the reinforcing member 29 in FIG. 5), respectively. 41 is arranged. In the present embodiment, the lower end portion (not shown) of the reinforcing member 25, the lower end portion 27U of the reinforcing member 27, and the lower end portion 29U of the reinforcing member 29 are brackets across the front end portion 17F of the floor panel 17, respectively. The members 37, 39, and 41 are integrally joined.

  For example, the lower end portion 27U of the reinforcing member 27 may be directly joined to the bracket member 39. However, in this case, the front end portion 17F of the floor panel 17 is partially provided with an opening so that the lower end portion 27U of the reinforcing member 27 and the horizontal surface portion 39a of the bracket member 39 (see FIG. 6B) directly face each other. Is done. Alternatively, the lower end portion 27U of the reinforcing member 27 is joined to the front end portion 17F of the floor panel 17, and the front end portion 17F of the floor panel 17 and the horizontal surface portion 39a of the bracket member 39 are joined separately. A structure in which the portion 27U and the bracket member 39 are indirectly joined may be employed.

  Among these bracket members 37, 39, and 41, the bracket member 37 is connected to an outer surface portion in the vehicle width direction of the side frame 23 (see FIG. 1) extending in the vehicle front-rear direction by welding or a fastening member.

  In addition, the bracket member 39 is connected to an inner surface portion in the vehicle width direction of the same side frame 23 by welding or a fastening member.

  Further, as described with reference to FIG. 1, the vehicle 1 is provided with a pair of left and right side frames 23, 23 in the vehicle front-rear direction, and the front portion thereof is a lower cross member that is a second cross member. The bracket member 41 is connected to the lower cross member 35 by welding or a fastening member.

  Therefore, as shown in FIG. 2, the bracket member 39 is connected not only to the inner surface portion of the side frame 23 in the vehicle width direction but also to the lower cross member 35.

  Here, the shapes of the bracket members 37, 39, and 41 will be described with reference to FIG. 6 showing a perspective view thereof. 6A shows the bracket member 37, FIG. 6B shows the bracket member 39, and FIG. 6C shows the bracket member 41.

  First, as shown in FIG. 6 (a), the bracket member 37 has, at its upper end, a horizontal surface portion 37a that becomes a substantially horizontal surface when connected to the vehicle body, and an end portion on the inner side in the vehicle width direction of the horizontal surface portion 37a. And a vertical surface portion 37b that is bent at a substantially right angle and extends downward. The length of the vertical surface portion 37b in the vehicle front-rear direction is longer than that of the horizontal surface portion 37a. From the rear end portion of the horizontal surface portion 37a, the first inclined portion 37c and the second inclined portion 37d are the upper ends of the vertical surface portion 37b. It is formed as a surface part. Among these, the lower end portion of the reinforcing member 25 hangs down and faces the upper surface of the horizontal surface portion 37a as shown in FIG.

  The bracket member 39 shown in FIG. 6 (b) has a horizontal surface portion 39a at its upper end portion, and a vertical surface portion 39b that is bent at a substantially right angle from the outer end portion in the vehicle width direction of the horizontal surface portion 39a and extends downward. doing. The length of the vertical surface portion 39b in the vehicle front-rear direction is longer than that of the horizontal surface portion 39a. From the rear end portion of the horizontal surface portion 39a, the first inclined portion 39c and the second inclined portion 39d are the upper ends of the vertical surface portion 39b. It is formed as a surface part. A substantially semicircular cutout 39e is formed at the lower end of the vertical surface 39b. Of these, the lower surface of the reinforcing member 27 hangs down and faces the upper surface of the horizontal surface portion 39a as shown in FIG.

  Further, the bracket member 41 shown in FIG. 6 (c) has a horizontal surface portion 41a at its upper end portion, and a vertical surface portion 41b that is bent at a substantially right angle from the inner end portion in the vehicle width direction of the horizontal surface portion 41a and extends downward. have. The length of the vertical surface portion 41b in the vehicle front-rear direction is longer than that of the horizontal surface portion 41a. From the rear end portion of the horizontal surface portion 41a, the first inclined portion 41c and the second inclined portion 41d are the upper ends of the vertical surface portion 41b. It is formed as a surface part. Unlike the bracket members 37 and 39, the bracket member 41 is inclined rearward as the front end surface portion of the vertical surface portion 41b is directed downward, and a substantially semicircular cutout portion 41e is formed at the lower end portion thereof. Is formed. In addition, as shown in FIG. 2, the lower end portion of the reinforcing member 29 hangs down and faces the upper surface of the horizontal surface portion 41a.

  The shape of the bracket members 37, 39, and 41 has been described above. The connection structure between the front panel 5, the floor panel 17, the side frame 23, and the lower cross member 35, which are vehicle body members, is illustrated in FIGS. 5 will be described. Although the cross section from the reinforcing member 25 to the bracket member 37 is not described with reference to the drawings, it differs from the cross section from the reinforcing member 27 to the bracket member 39 in that the bracket member 37 is not connected to the cross member 35. Can also be understood from FIGS.

  As shown in FIG. 4, the front panel 5 is formed to be curved so as to protrude from the cab R side toward the front of the vehicle, and its lower end surface portion 5U extends vertically downward. The reinforcing member 27 is formed along the shape of the front panel 5 and has a substantially hat-like cross section in the vertical direction as described with reference to FIG. Further, the upper end portion (not indicated) of the reinforcing member 27 is connected to the upper cross member 33.

  On the other hand, the lower end portion 27U of the reinforcing member 27 is cut along a substantially horizontal plane, and is connected to the horizontal plane portion 39a of the bracket member 39 shown in FIG. 6B by welding with the front end portion 17F of the floor panel 17 interposed therebetween.

  The bracket member 39 is connected to an inner surface portion of the side frame 23 in the vehicle width direction, and is formed in a substantially semicircular cutout portion 39e (see FIG. 6B) formed at the lower end portion of the vertical surface portion 39b. The cross member 35 connected to the side frame 23 is accommodated and is also connected to the cross member 35.

  In addition, the bracket member 39 is provided with the first inclined portion 39c and the second inclined portion 39d as shown in FIG. 6B, but the first inclined portion 39c is connected to the lower end portion 27U of the reinforcing member 27. The second inclined portion 39d has the same inclination angle as that of the first inclined portion 39c and the second inclined portion. 39d is connected to the floor panel 27 by welding.

  In addition, a second reinforcing member 45 that is bent along the shape is disposed on the first inclined portion 39c and the second inclined portion 39d of the bracket member 39. Specifically, the second reinforcing member 45 is a plate-like member extending in the vehicle width direction over at least the bracket member 37, the bracket member 39, and the bracket member 41, and in the vicinity of the lower end portion 27U of the reinforcing member 27. The flat portion 27a (corresponding to the flat portion 25a of the reinforcing member 25 in FIG. 3), the upper inclined portion 45b straddling the first inclined portion 39c of the bracket member 39, and the second inclined portion 39d of the bracket member 39 are installed. And a lower inclined portion 45a installed on the inclined surface of the connected floor panel 17.

  Among these, the upper inclined portion 45b is brought into contact with and pressed against the flat portion 27a in the vicinity of the lower end portion 27U of the reinforcing member 27, and the lower inclined portion 45a is connected to the second inclined portion 39d via the inclined surface of the floor panel 17. Has been. The lower inclined portion 45a may be coupled to the inclined surface of the floor panel 17 in the vicinity of the middle portion in the vehicle width direction of the bracket member 39 and the bracket member 41, for example.

  As described above, the bracket member 39 has the vertical surface portion 39b connected to the vehicle width direction inner surface portion of the side frame 23, and the horizontal surface portion 39a connected to the lower end portion 27U of the reinforcing member 27 via the floor panel 17. The cross member 35 connected to the side frame 23 is accommodated and connected to the notch 39e, and the floor panel 17 is connected to the first inclined portion 39c and the second inclined portion 39d. Since the one inclined portion 39c and the second inclined portion 39d are pressed, a very high strength and rigidity are ensured.

  Accordingly, the reinforcing member 27 has an upper end and a lower end connected to each other, and the structure of the reinforcing member 27 is substantially a hat shape when viewed from above and below, so that the front panel 5 can enter the cab R side during a frontal collision. Can be suppressed.

  As described above, the connection structure between the upper end portion and the lower end portion of the reinforcing member 27 has been described with reference to FIG. 4, but the reinforcing member 25 has substantially the same effect as the reinforcing member 27.

  Next, a connection structure of the upper end portion and the lower end portion of the reinforcing member 29 will be described with reference to FIG.

  As shown in FIG. 5, the front panel 5 is curved and formed so as to protrude from the cab R side toward the front of the vehicle, and the lower end surface portion 5U is connected to the floor panel 17 by welding. The reinforcing member 29 is formed along the shape of the front panel 5 and has a substantially hat-like cross section in the vertical direction as described with reference to FIG. Further, the upper end portion (not indicated) of the reinforcing member 29 is connected to the upper cross member 33.

  On the other hand, the lower end portion 29U of the reinforcing member 29 is cut in a substantially horizontal plane, and is connected to the horizontal plane portion 41a of the bracket member 41 shown in FIG. 6C by welding with the front end portion 17F of the floor panel 17 interposed therebetween.

  The bracket member 41 is disposed inward in the vehicle width direction of the side frame 23, and is formed in a substantially semicircular cutout portion 41e (see FIG. 6C) formed at the lower end portion of the vertical surface portion 41b. The cross member 35 connected to the side frame 23 is accommodated and connected to the cross member 35.

  In addition, the bracket member 41 is provided with the first inclined portion 41c and the second inclined portion 41d in FIG. 6C, but the first inclined portion 41c is connected to the lower end portion 29U of the reinforcing member 29. The second inclined portion 41d has the same inclination angle as that of the first inclined portion 41c and the second inclined portion. 41d is connected with the floor panel 17 by welding.

  Moreover, the 2nd reinforcement member 45 bent so that the shape may be followed by the 1st inclination part 41c and the 2nd inclination part 41d of the bracket member 41 is arrange | positioned. Specifically, the second reinforcing member 45 is a plate-like member extending in the vehicle width direction over at least the bracket member 37, the bracket member 39, and the bracket member 41, as described in FIG. The flat portion 29a (corresponding to the flat portion 25a of the reinforcing member 25 in FIG. 3) in the vicinity of the lower end portion 29U of the reinforcing member 29, the upper inclined portion 45b straddling the first inclined portion 41c of the bracket member 41, and the bracket member 41 A lower inclined portion 45a installed on the inclined surface of the floor panel 17 installed and connected on the second inclined portion 41d.

  Among these, the upper inclined portion 45b is brought into contact with and pressed against the flat portion 29a in the vicinity of the lower end portion 29U of the reinforcing member 29, and the lower inclined portion 45a is connected to the second inclined portion 41d via the inclined surface of the floor panel 17. Has been. The lower inclined portion 45a may be coupled to the inclined surface of the floor panel 17 at an inner portion in the vehicle width direction than the bracket member 41, for example.

  As described above, in the bracket member 41, the horizontal surface portion 41a is connected to the lower end portion of the reinforcing member 29 via the floor panel 17, and the cross member 35 connected to the side frame 23 is accommodated in the notch portion 41e. Since the floor panel 17 is connected to the first inclined portion 41c and the second inclined portion 41d, and the first inclined portion 41c and the second inclined portion 41d are pressed by the second reinforcing member 45, The structure ensures high strength and rigidity.

  Accordingly, the reinforcing member 29 has an upper end and a lower end connected to each other, and the structure of the reinforcing member 29 is substantially a hat shape when viewed from above and below, so that the front panel 5 enters the cab R side at the time of a frontal collision. Can be suppressed.

  As with the bracket members 39 and 41, the bracket member 37 has a horizontal plane portion 37a, a first inclined portion 37c, and a second inclined portion 37d connected to the floor panel 17 by welding.

  As described above, the connection structure between each bracket member and the front panel 5, the floor panel 17, the side frame 23, and the lower cross member 35, which are vehicle body members, has been described. As can be seen, the front seat on which the occupant is seated is described. Since the front panel 5 disposed in front has a structure in which the front panel 5 is prevented from entering toward the cab (R) at the time of a frontal collision, the occupant's protection can be improved.

  Further, as can be seen from the above embodiment, in the present invention, a structural member for preventing the front panel 5 from entering the cab R side is extended on the floor panel 17 of the cab R in the vehicle front-rear direction. It is not necessary to provide it, and the effect that a wide foot space can be secured can be produced at the same time.

  The present invention can be applied to a cab over type vehicle, that is, a cab over type 1 box vehicle, a cab over type truck, and the like. In addition to the plurality of reinforcing members 25, 27, and 29, a structure in which a reinforcing member having the same shape is additionally provided on the outer side in the vehicle width direction may be employed.

Side view showing a cab-over type vehicle according to the present embodiment Front view of the vehicle of FIG. Cross-sectional view in the vertical direction of the reinforcing member (A-A cross-sectional view in FIG. 2) BB sectional view in FIG. CC sectional view in FIG. Perspective view of bracket member Diagram showing conventional technology

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cab over type vehicle 5 ... Front panel 5U ... Front panel lower end surface part 9 ... Front seat 17 ... Floor panel 17F ... Floor panel front end part 23 ... Side frame 25, 27, 29: Reinforcing members 27U, 29U: Reinforcing member lower end 33: Upper cross member (cross member)
35 ... Lower cross member (second cross member)
37, 39, 41 ... Bracket members 37a, 39a, 41a ... Horizontal surface portions 37b, 39b, 41b of the bracket members ... Vertical surface portions of the bracket members

Claims (5)

A cab is disposed above the engine, and the lower end of the front panel extends across the vehicle width direction at the front of the vehicle so as to face a seat disposed in the vehicle width direction in the cab A cabover in which a surface portion and a front end portion of a floor panel serving as a floor portion of the driver's cab are disposed close to each other, and a pair of left and right side frames in the vehicle width direction extending in the vehicle front-rear direction is disposed below the floor panel. In the vehicle body front structure of a type vehicle,
A reinforcing member disposed in the vertical direction along the front panel is disposed on the vehicle interior side of at least a portion of the front panel facing the seat,
The upper end portion of the reinforcing member is connected to a cross member arranged in the vehicle width direction in the vehicle interior, while the lower end portion of the reinforcing member is connected to a lower portion of the front panel and extends to the vicinity of the floor panel. And
A vehicle body front structure for a cab-over type vehicle, wherein a bracket member is provided on a lower surface of the floor panel and connected to the side frame and a lower end portion of the reinforcing member.   2. The front panel according to claim 1, wherein the front panel has a curved shape protruding toward the front side of the vehicle in a cross-sectional view in the vehicle width direction, and the reinforcing member has a curved shape protruding toward the front side of the vehicle along the front panel. The front structure of the cabover type vehicle body.   3. The bracket member according to claim 1, wherein the bracket member is connected to the side frame via a second cross member that is disposed below the cross member and connects the pair of side frames. A cabover type vehicle body front structure characterized by   4. The reinforcing member according to claim 1, wherein the reinforcing member has a substantially hat shape in cross section when viewed in the vertical direction, and a plurality of reinforcing members are arranged at intervals in the vehicle width direction so as to correspond to the front of the occupant. The cabover type vehicle body front structure.   In Claim 4, The said bracket member is arrange | positioned in the lower end part of the said reinforcement member, This bracket member is comprised in the plate shape arrange | positioned in the vehicle up-down direction while extending in the vehicle front-back direction. The front structure of the cabover type vehicle body.

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