JP2007045414A - Reinforcing member-attaching structure for ensuring survival space at the time of collision - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide reinforcing member-attaching structure for ensuring a survival space at the time of collision which demonstrate effects more than equivalent to a case in which a reinforcing member is put in a door. <P>SOLUTION: In the reinforcing member-attaching structure for ensuring a survival space at the time of collision, a floor panel 4 constitutes a cab, bar-like bodies 1, 2, 3 are extended along a lower face of the floor panel 4 in an approximately longitudinal direction of a vehicle body, from at least the vicinity of the front end of the floor panel 4 to a seat mounting portion. The rear parts of the bar-like bodies 1, 2, 3 are connected with members 4a, 4b which are extended along the lower face of the floor panel 4 in the longitudinal direction of the vehicle body. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle body reinforcing member provided for the purpose of securing a living space at the time of a collision.

For example, in a cab-over type vehicle, Patent Document 1 discloses a structure for receiving a load by inserting a reinforcing member called an impact beam in the front-rear direction in a door in order to secure a living space at the time of a frontal collision.
JP 10-138757 A

However, in the case of a structure in which a reinforcing member is installed in the door as in this prior art, the door becomes heavy and requires force to open and close, the layout of internal parts is limited, the door becomes thick and affects the comfortability, etc. This has resulted in limitations in designing the car body.
The present invention proposes a mounting structure for a reinforcing member capable of exhibiting an effect equal to or higher than that obtained when a reinforcing member is inserted into a door, paying attention to the background as described above.

  The reinforcing member mounting structure for securing a living space at the time of collision according to the present invention has at least one bar-like shape extending along at least the vicinity of the front end of the floor panel along the lower surface of the floor panel constituting the cab. The body is extended substantially in the longitudinal direction of the vehicle body, and the rear part of the rod-like body is connected to a member extending substantially in the longitudinal direction of the vehicle body on the lower surface of the floor panel.

  According to the present invention, since the rod-shaped body is extended to the lower part of the floor panel as the reinforcing member, the problem of the restriction that has occurred in the case of being provided in a door that is a movable part and has many parts such as electrical components is solved. Can do. In addition, since at least a portion corresponding to the foot of the occupant from the vicinity of the front end of the floor panel to the seat is reinforced with a rod-like body, it is possible to obtain a structure that firmly protects the deformation of the foot of the occupant, which is a feature of cab-over type vehicles.

  In particular, by connecting the rear part of the rod-shaped body to the member, deformation (Z-shaped bending in the vehicle body front-rear direction) that causes the member and the floor panel to largely protrude into the foot space during frontal collision is suppressed by the behavior of the rod-shaped body. Therefore, it is possible to secure a wider space at the foot of the passenger.

  In the reinforcing member mounting structure according to the present invention, the rod-like body is attached to the lower surface of the floor panel substantially along the front-rear direction of the vehicle body so as to reinforce the surface from at least the vicinity of the front end of the floor panel constituting the cab to the seat. It is good. The rod-like body as the reinforcing member can be provided over the entire length from the vicinity of the front end of the floor panel to the vicinity of the rear end, but it is particularly preferable that the deformable portion (crushable zone) absorbs the impact at the time of collision at the rear of the cab behind the seat. The deformable portion can be formed by terminating the rod-like body under the seat (that is, only the floor panel). In this way, by making a crushable zone without installing a reinforcing member at the rear of the cab behind the seat, it is possible to receive the load with the reinforcing member while absorbing the impact in the zone, thus securing a more living space The probability of being able to be increased.

  It is preferable that at least two rod-shaped bodies along the floor panel lower surface shape are installed so as to define the contour of the surface and are used as reinforcing members to reinforce the feet of the occupant in a wide area. Preferably, the reinforcing member is installed on the driver's seat side (meaning that the driver's seat here is a seat on the side where the possibility of a collision is higher) in consideration of the offset collision, and further, the passenger seat. A reinforcing member may also be installed on the side (the passenger seat here means a seat on the side where the possibility of a collision is lower).

FIG. 1 and FIG. 2 show and explain specific examples when the present invention is applied to a cab-over type vehicle. FIG. 1 is a sectional view of a cab as seen from the side of a reinforcing member mounting structure according to the present invention, and FIG.
In this example, three reinforcing pipes 1 and 2 that are two rod-like bodies on the driver's seat side and one reinforcing pipe 3 that is one rod-like body on the passenger seat side are used as the reinforcing members in the longitudinal direction of the vehicle body. To (X), it extends along the lower surface of the floor panel 4 from the vicinity of the front end of the floor panel 4 to under the seat S. The reinforcing pipes 1, 2, and 3 are formed so as to crawl along the shape of the floor panel 4, and are fixed by bolts using brackets as fixing portions. In particular, the two reinforcing pipes 1 and 2 on the driver's seat side are fixed as reinforcing members that define the contours of a predetermined surface. Of course, a reinforcing member comprising two reinforcing pipes may be applied to the passenger seat side as well.

  In this way, by reinforcing the reinforcing members composed of the reinforcing pipes 1 and 2 in the front-rear direction from the vicinity of the front end of the floor panel 4 corresponding to the feet of the occupant to the bottom of the seat S, the floor panel 4 of the occupant foot portion is provided. It is reinforced on the surface and operates as a surface having a predetermined area at the time of collision, and a space for the foot is secured. In particular, since the two reinforcing pipes 1 and 2 on the driver's seat side are fixed so as to delineate a predetermined surface, the effect of surface reinforcement is enhanced.

  Each of the reinforcing pipes 1, 2 and 3 is extended from the vicinity of the front end of the floor panel 4 with the front cab mount 5 to the bottom of the seat (driver's seat, passenger's seat) S and terminates from the end to the floor. There is no reinforcing member between the rear cab mount 6 at the rear end of the panel 4 and the crushable zone Z is left. By setting the crushable zone Z, the reinforcement pipes 1, 2, and 3 receive the load in the event of a collision, while the crushable zone Z is crushed and absorbs the impact, thereby ensuring a more reliable living space. Is possible.

In the case of a cab-over type truck, the deformation of the foot becomes large at the time of a collision, but by adding reinforcement pipes 1 and 2 below the floor panel to provide surface reinforcement and providing a crushable zone Z, the foot space is more reliably secured. I can protect it.
Of the fixing portions for fixing the front and rear end portions and the middle portion of the reinforcing pipes 1, 2 and 3 to the lower surface of the floor panel 4, the fixing portions 2 a and 3 a at the rear end portions of the reinforcing pipes 2 and 3 are the lower surfaces of the floor panel 4 Are connected to reinforcing members (main members) 4a and 4b extending substantially in the longitudinal direction of the vehicle body. Thereby, the rear parts of the reinforcing pipes 2 and 3 close to the members 4a and 4b are coupled to the members 4a and 4b.

In this way, by connecting the rear portions of the reinforcing pipes 2 and 3 which are rod-like bodies as reinforcing members to the members 4a and 4b, the members 4a and 4b and the floor panel 4 are projected and deformed into the foot space at the time of a frontal collision. Since (the Z-shaped bending in the longitudinal direction of the vehicle body) can be suppressed by the behavior of the reinforcing pipes 2 and 3, it is possible to secure a wider space at the foot of the occupant.
That is, referring to FIG. 1, first, the floor panel 4 of the cab-over type vehicle has a shape that falls from the seat S portion to the foot portion of the occupant in order to take a space from the occupant's knee to the bottom. A substantially vertical step portion is formed at an intermediate portion between the floor panel 4 and the members 4a and 4b along the floor panel 4. Since this step portion is present, a force is applied so that the bent portion A below the step portion of the floor panel 4 and members 4a and 4b is deformed rearwardly (in the direction indicated by the arrow) at the time of a frontal collision. , 4b are bent in a Z shape with the bent portions A and B above and below the stepped portion as fulcrums, and deformed into a state where the passenger's foot space is narrowed. On the other hand, since the reinforcement pipes 1, 2, and 3 are higher in rigidity than the floor panel 4 and the members 4a and 4b, the rear part C is deformed so as to rotate upward (in the direction of the arrow) at the time of the frontal collision. Therefore, if the rear portions of the reinforcing pipes 2 and 3 adjacent to the members 4a and 4b are joined to the members 4a and 4b, the members 4a and 4b are joined together with the rear behavior of the reinforcing pipes 2 and 3 at the time of a frontal collision. Since the portion is bent upward, the bent portion B is pulled rearward along with the deformation. As a result, the degree of Z-shaped bending can be reduced. Accordingly, it is possible to secure a wider space at the foot of the occupant than when the rear portions of the reinforcing pipes 2 and 3 are not coupled to the members 4a and 4b.

The cab sectional view in the cab over type vehicle concerning the present invention. The figure which shows the example of FIG. 1 seeing from a floor panel lower part.

Explanation of symbols

1,2,3 Reinforcement pipe (reinforcement member)
2a, 3a Fixed part 4 Floor panel 4a, 4b Member 5 Front cab mount 6 Rear cab mount S Seat Z Crashable zone

Claims (2)

Along the lower surface of the floor panel constituting the cab, at least one rod-like body is extended in the front-rear direction of the vehicle body between at least the front end vicinity of the floor panel and the seat installation site.
A reinforcing member mounting structure for securing a living space at the time of collision, characterized in that a rear portion of the rod-like body is coupled to a member extending substantially in the longitudinal direction of the vehicle body on the lower surface of the floor panel. The rod-shaped body is provided with a fixing portion to the lower surface of the floor panel at the front and rear end portions and the intermediate portion,
2. The reinforcing member mounting structure for securing a living space at the time of collision according to claim 1, wherein a fixed portion of a rear end portion is coupled to the member.

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