JPS6328710Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to an improvement in a structure for reinforcing a floor tunnel portion of an automobile, such as a passenger car, which protrudes upward from the center in the vehicle width direction and is elongated in the longitudinal direction of the vehicle body.

[Prior art]

When the floor of an automobile is flat, its cross-sectional rigidity is insufficient, so a floor tunnel is formed in the center of the floor in the width direction of the vehicle body, protruding upward and extending in the longitudinal direction of the vehicle body. The floor of such a car tends to deform at the floor tunnel when a downward or upward load is applied to both ends of the floor in the width direction of the vehicle. Then, a reinforcing member is attached to increase the rigidity. That is, for example, as shown in FIGS. 1 and 2, a front floor 10, a center floor 12, a cross member 14 connecting these in the front-rear direction, and a center portion in the width direction of the vehicle body in an automobile (whole illustrations are omitted). When a floor tunnel 16 is formed which projects upwardly and traverses these longitudinally in the longitudinal direction of the vehicle body, brackets 18 are attached to the slopes on both sides of the bottom of the floor tunnel 16 in the cross member 14, and these brackets 18
By tightening and fixing the pipe 20, which has both ends crushed into a flat plate shape, with bolts 22A and nuts 22B, it is connected across the bottom of the floor tunnel 16, and the rigidity of the floor tunnel 16 portion is increased. There is a reinforced structure in the floor tunnel section. However, in such a conventional floor tunnel reinforcement structure, the flat plate parts 21A and 21B at both ends of the pipe 20, which is a reinforcing member, are inclined with respect to the axis of the pipe 20, and the inclined part on the inner periphery of the lower end of the floor tunnel is tilted with respect to the axis of the pipe 20. Since it is parallel to the bracket 18 attached to the pipe 20, which is the reinforcing member,
There was a problem that the rigidity of the Furthermore, the bracket 18 is connected to the floor tunnel 16.
Since the bracket 18 must be attached to the inclined lower end of the bracket 18, welding is laborious and the cost of the bracket 18 itself is also high.

[Purpose of invention]

This invention was made in view of the above-mentioned conventional problems, and aims to provide a reinforcement structure for the floor tunnel portion of an automobile that has high rigidity and is capable of reinforcing the floor tunnel at low cost. purpose.

[Structure of the invention] This invention provides a reinforcing brace on the side surface of the cross member constituting the end of the floor tunnel in the longitudinal direction of the vehicle body, on the side surface of the cross member in the longitudinal direction of the vehicle body outside the floor tunnel, across the vicinity of the lower end of the floor tunnel. By installing it, the above purpose is achieved.

[Effect of invention]

This invention increases the rigidity of the cross member by attaching reinforcing braces to the side surfaces of the cross member in the longitudinal direction of the vehicle body without bending both ends.

【Example】

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, parts that are the same as or corresponding to the conventional floor tunnel reinforcing structure shown in FIGS. 1 and 2 are given the same reference numerals as in FIGS. 1 and 2, and their explanation will be omitted. shall be taken as a thing. In this embodiment, as shown in FIGS. 3 to 5, a cross member 14 constituting a rear end portion of a floor tunnel 16 in the longitudinal direction of the vehicle body in an automobile (whole illustration is omitted) is attached to the outer side of the floor tunnel 16. A reinforcing brace 30 made of a pipe with flat ends at both ends is attached to the rear side surface 16B in the longitudinal direction of the vehicle body so as to cross the vicinity of the lower end of the floor tunnel 16. The cross member 14 is interposed between the rear end of the front floor 10 and the front end of the center floor 12 to connect them. The front floor 10 is connected to the lower end of the front side surface 16A of the cross member 14 in the longitudinal direction of the vehicle body,
Further, the center floor 12 is connected to substantially the upper end of the rear side surface 16B of the cross member 14 in the longitudinal direction of the vehicle body. At this time, a recessed portion connected to the floor tunnel 16 is formed on the lower side of the cross member 14, thereby forming a rear end portion of the floor tunnel 16. The reinforcing brace 30 is attached to the rear side surface 1 in the longitudinal direction of the vehicle body outside the floor tunnel 16 of the cross member 14.
6B, flat plate portions 31A, 31 at both ends thereof are located below the connection portion with the center floor 12.
B is tightened and fixed by bolts 22A and nuts 22B. In this embodiment, the reinforcing brace 30 is attached to the cross member 14 while maintaining the flat plate parts 31A and 31B at both ends in a straight line without tilting with respect to the axis of the pipe-shaped reinforcing brace 30. There is an advantage that there is no decrease in rigidity at the portions 31A and 31B. Further, since the reinforcing brace 30 is directly attached to the cross member 14, there is no need for a bracket as in the conventional case, and therefore, the bracket can be omitted and work such as welding the bracket is also unnecessary. I can do it. In the above embodiment, the reinforcing brace 30 is attached to the cross member 14 interposed between the front floor 10 and the center floor 12, but the reinforcing brace 30 is attached to the cross member 14 that forms the end of the floor tunnel 16. It is acceptable as long as it can be attached to. Therefore, it may be attached to a cross member at another location. In addition, the above embodiment is
This is attached to the rear side surface 16B of the cross member 14 outside the floor tunnel 16 in the longitudinal direction of the vehicle body, but this may also include, for example, another cross member that constitutes the front end of the floor tunnel 16. For example, it may be attached to the front side surface of the cross member in the longitudinal direction of the vehicle outside the floor tunnel, or to both the front side surface and the rear side surface 16B. Furthermore, although the reinforcing brace 30 is formed by crushing both ends of a pipe-shaped member to form flat plate parts 31A and 31B, this may be a flat plate-shaped member or a pipe-shaped member as a whole.

[Effect of the idea]

Since the present invention is constructed as described above, the reinforcing member can be directly attached to the cross member while maintaining its straight state without bending both ends, and therefore the rigidity of the reinforcing member can be increased. In addition, it has the excellent effect of being able to reduce costs by eliminating the need for a bracket for attaching the reinforcing member and its welding work.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional reinforcement structure for a floor tunnel portion of an automobile, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is an implementation of the reinforcement structure for a floor tunnel portion of an automobile according to the present invention. FIG. 4 is a sectional view taken along the - line in FIG. 3, and FIG. 5 is a perspective view showing a reinforcing brace in the same embodiment. 10...Front floor, 12...Center floor, 14...Cross member, 16...Floor tunnel, 30...Reinforcement brace, 31A, 31B...
...Flat plate part.

Claims (1)

[Scope of utility model registration request] A reinforcing structure for a floor tunnel portion of an automobile, in which a reinforcing brace is attached to the side surface of a cross member constituting an end portion of a floor tunnel in the longitudinal direction of the vehicle body, extending across the vicinity of the lower end of the floor tunnel, on the side surface in the longitudinal direction of the vehicle body outside the floor tunnel. .