JP2551287Y2 - Lower body structure of car - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application field] The present invention relates to a lower body structure of an automobile,
In particular, the present invention relates to a structure of a connecting portion between a side sill and a front side frame.

[0002]

2. Description of the Related Art As shown in FIG. 1, a side sill 1 having a closed section composed of a side sill inner and a side sill outer is
In the vicinity of the front end portion, the rear portion of the front side frame 2 is connected to a rear reinforcement (bracket) 3.
A jack-in hose is fixed at a position in the vicinity of the joint portion with the connecting portion, and this is used as a jack-up portion (for example, actual open flat 1-1).
No. 61991).

[0003]

In the conventional structure as described above, the jack-in hose must be fixed to the inner surface or the outer surface of the side sill inner, so that the number of parts is increased and the jack-in hose is increased. There is a problem that it takes a lot of man-hours to install the hose.

The main object of the present invention is to improve the connection between the side sill 1 and the reinforcement 3 so that the connection can be strengthened and a structure capable of sufficiently withstanding the jack-up load without a special reinforcing material. It is assumed that.

[0005]

Means for Solving the Problems The present invention provides a side sill 1
When,Offset to the center of the vehicle with respect to the side sill 1.
ProvidedConnect the front side frame 2
A hat-shaped cross-section phosphor bonded and fixed to the lower surface of the lower panel 4
Lower body structure of automobile connected by force 3
In the lower part of the side sill inner
Configured toSimilarly, formed on the inclining slope on the insideLympho
Statement 3End ofPart aboveAt the bottom of the side sill innerInclination
By bonding and fixing to the surface, reinforcement 3
By increasing the bond length with the side sill 1,
In addition to increasing rigidity,Lower side sill inner
ofSurrounded by the reinforcement end of the slopePart
And the bottom to be joined to the bottom of the reinforcement.
Partially protruding part consisting of a vertical wall surrounding it
And the bottom of the projection and the bottom of the reinforcement.
With the departmentWith a double-walled bottom part and a vertical wall surrounding itJa
Lock-up sectionComposedBy the jack-up part
Dedicated reinforcementDepartmentWithout jacklin force
Jackia that can withstand jack-up load enough
Can be configured to reduce the number of parts, and
Ease of assembly work, cost reduction and weight reduction
Things.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

2 to 4, reference numeral 1 denotes a side sill having a closed cross section comprising a side sill inner 11 and a side sill outer 12, and 2 denotes a front side frame, which is offset near the front end of the side sill 1 and toward the vehicle body center line. The front side frame 2 is connected by a reinforcement 3.

The reinforcement 3 has a hat-shaped cross section opened upward. One end flange 31 is joined and fixed to the front side frame 2, and the other end flange 32 is joined to the lower portion of the side sill inner 11. At the same time, the upper edge flange 33 is joined and fixed to the lower surface of the floor panel 4, and the vertical load applied to the front side frame 2 such as the front suspension load and the engine reaction force is twisted by the side reinforcement 3 by the side sill. 1
To be communicated to.

In the present invention, the lower portion of the side sill inner 11 is formed as an inwardly inclined surface 11a, and a similarly inclined edge flange 32 is joined and fixed to the inclined surface 11a. A projecting portion 11d composed of a bottom surface portion 11b and a vertical wall portion 11c is formed so as to partially project downward from a portion surrounded by the edge flange 32 of the edge flange 11a. The bottom portion is joined (or joined and fixed), and the jack 5 is pushed up by the jack 5 at the overlapping portion of the bottom portion 11b of the protrusion 11d and the bottom portion of the reinforcement 3.

[0010]

[Effect of the Invention] According to the present invention configured as described above,
Since the joint fixing surface between the side sill and the reinforcement is formed as an inclined surface, the joint length can be made sufficiently long so that the joint can be greatly strengthened, and vibration and noise such as car shake and road noise can be improved. And at the same time improve maneuverability and efficiency of frontal collision energy absorption.

Also, since the overlapping portion of the bottom surface of the projection 11d formed on the inclined surface 11a at the lower portion of the side sill inner and the bottom surface of the reinforcement is the jack-up portion, the jack-up load is reduced to the two bottom portions. And the vertical wall surrounding it, the supporting member can be sufficiently firmly supported, and the conventional reinforcing material (jack jack hose) dedicated to the jack-up portion can be omitted, so that cost reduction and weight reduction can be achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vehicle body viewed from obliquely below.

FIG. 2 is a bottom view of part A of FIG. 1 showing an embodiment of the present invention.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a sectional view taken along the line CC of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side sill 2 Front side frame 3 Linkage 4 Floor panel 6 Jackup part 11 Side sill inner 11a Inclined surface 11b Bottom part 11c Vertical wall part 11d Projection part

Claims (1)

(57) [Scope of request for utility model registration] An end portion of a reinforcement having a hat-shaped cross-section in which a lower portion of a side sill of a side sill including a side sill inner and a side sill outer is formed as an inwardly inclined surface, and an upper portion thereof is bonded and fixed to a lower surface of a floor panel. To the front side frame provided offset to the side of the vehicle body with respect to the side sill, and the other end of the reinforcement is tilted upward inward.
The inclined surface is formed and fixed to the inclined surface below the side sill inner, and a portion surrounded by the reinforcement end of the inclined surface below the side sill inner is provided with a reinforcement. only setting a protrusion consisting of a bottom and vertical wall portion joined to the bottom portion, the bottom portion of the 2-ply bottom and bottom portions of the reinforcements of the projecting portion, it
A lower body structure of an automobile , wherein a jack-up portion is constituted by a surrounding vertical wall portion .