JPH0744535Y2 - Connection structure between upper body structure and chassis frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a chassis frame that is attached to an upper vehicle body structure and a floor panel constituting a lower surface portion of the upper vehicle body structure in, for example, a one-box car type automobile. It is related to the connection structure with.

[Conventional technology]

BACKGROUND ART Conventionally, in an automobile represented by a one-box car having a chassis frame, an upper vehicle body structure that forms a vehicle interior by using a body and a floor panel as an outer shell, and a lower vehicle body that has a chassis frame as its skeleton are provided. The chassis frame and the floor panel are connected to each other by connecting the chassis frame to the floor panel.

As shown in FIG. 3, a floor panel 1 which is a lower surface of the upper vehicle body structure A is provided in a state where the center of the passenger compartment is recessed, and a cab floor 2 and a center floor 3 which is recessed from the front are provided. It consists of the rear shelf 4 at the rear,
In the central portion of the vehicle body, for example, as shown in Japanese Utility Model Application Laid-Open No. 54-83117, the side member 6 of the chassis frame 5 is connected to the side portion of the center floor 3 via the mount bush 7, whereby The above connection is made. The leg portion 9 of the floor deck 8 provided on the center floor 3 is also connected to the connecting portion 10 of the floor panel 1 to which the side member 6 is connected, that is, also serves as the mounting position of the leg portion 9. Cage, floor panel 1
The side member 6 and the leg portion 9 are connected to each other with the (center floor 3) interposed, and the center floor directly receives a load from the leg portion side. The side member 6 has a bracket 11 which is arranged so as to project laterally, and the bracket 11 is fastened to the connecting portion 10.

A side frame 15 provided by combining a plurality of outer members 12 and inner members 13 and 14 is welded and fixed to the lower surface of the side portion of the center floor 3 to strengthen the floor panel 1.

[Problems to be solved by the device]

However, as described above, in the case where the side members are connected to the center floor and the legs of the floor deck are also connected to the center floor, the center floor directly receives the load from the chassis frame side, and Since the center floor receives the load directly as well, the rigidity of the floor will force the load transmission to a considerable extent.
It was also supposed to promote body vibration. On the other hand, if the rigidity of the center floor itself is increased, the weight of the floor panel is significantly increased and the sectional shape becomes extremely complicated.

Then, this invention makes it a subject to stiffen a center floor, without making the said inconvenience arise, and aims at improvement of vehicle body rigidity.

[Means for Solving the Problems]

The present invention has been made in consideration of the above-mentioned problems, and connects a side member of a chassis frame arranged below the floor panel to a side portion of the floor panel, and connects the side member of the floor panel to the connecting portion. In a structure in which legs of a floor deck arranged above are connected, a stiffening member is provided from a side frame arranged on a lower surface of a side portion of the floor panel to the connecting portion of the floor panel, and the stiffening member is interposed. The above problem is solved by connecting the side member and the leg portion of the floor deck to the floor panel in the closed state.

[Action]

According to the present invention, the load applied from the side members and the legs of the floor deck toward the floor panel is also transmitted to the side frame to disperse the load, thereby reducing the load on the floor panel.

〔Example〕

Next, the present invention will be described in detail based on an embodiment shown in FIGS. 1 and 2. The parts having the same configurations as those of the conventional example shown in FIGS. 3 and 4 are designated by the same reference numerals, and the description thereof will be omitted.

That is, according to the present invention, the gusset-shaped stiffening member 16 is welded and fixed from the side frame 15 to the connecting portion 10 of the center floor 3, and the mounting bush 7 and the stiffening member 16 are interposed at the connecting portion 10 so that the side The bracket 11 and the floor deck 8 provided on the side frame 15 side of the member 6
The legs 9 are fastened with bolts. The stiffening member 16 has a shape corresponding to the shape of the inner side surface of the side frame 15. The stiffening member 16 is firmly fixed to the side frame, and the load from the side member 6 and the leg portion 9 is at the center. The floor 3 and the side frame 15 are dispersed, and both of them receive the load. The rigidity of the connecting portion 10 is improved by mounting the stiffening member 16, so that the load applied to the center floor side can be comfortably received.

[Effect of device]

As described above, according to the present invention, the side member of the chassis frame disposed below the floor panel is coupled to the side portion of the floor panel, and the coupling member is disposed above the floor panel. In the structure in which the legs of the floor deck are connected, a stiffening member is provided from the side frame disposed on the lower surface of the side portion of the floor panel to the connecting portion of the floor panel, and the side member is provided with the stiffening member interposed. Since the members and the legs of the floor deck are connected to the floor panel, the load from the side members and the legs of the floor deck is also transmitted to the side frame side, and the load is dispersed, so that the load received by the floor panel is reduced. It becomes smaller, which is advantageous in terms of vibration resistance of the floor panel and improves vibration performance. In addition, the rigidity of the floor panel, that is, the rigidity of the vehicle body, is improved by bridging the stiffening member from the floor panel to the side frame, and the stiffening member does not need to have a small overall shape. The effect of excellent practicability is achieved, such as the work of mounting the rigid member can be simplified.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a joint structure of an upper vehicle body structure and a chassis frame according to the present invention, and FIG. 2 is an explanatory view showing a II-II line portion of FIG. FIG. 4 is an explanatory view showing a conventional example, and FIG. 4 is an explanatory view showing a section taken along the line IV-IV in FIG. 1 …… Floor panel 3 …… Center floor 5 …… Chassis frame 6 …… Side member 8 …… Floor deck 9 …… Leg 10 …… Connecting part 15 …… Side frame 16 …… Stiffening member

Claims (1)

[Scope of utility model registration request] 1. A side member of a chassis frame arranged below the floor panel is connected to a side portion of the floor panel, and a leg portion of a floor deck arranged above the floor panel is connected to the connecting portion. In the connected structure, a stiffening member is provided from a side frame arranged on a lower surface of a side portion of the floor panel to the connecting part of the floor panel, and the side member and the leg portion of the floor deck are interposed with the stiffening member. A structure in which an upper body structure and a chassis frame are connected to each other by connecting and to a floor panel.