JP2001239955A - Vehicular body mounting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance strength of a body to external force inputted from a chassis frame, and to restrain vibration of a floor panel and a beat retaining sound in a cabin by dispersing vibrational energy inputted from the chassis frame. SOLUTION: In this vehicular body mounting structure for supporting a floor cross member 16 close to a pillar 19 of the body by the chassis frame 12 via a body mount 20, one end part of a mounting bolt 24 in the body mount 20 is fixed to a just under position of the pillar 19 in the floor cross member 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body mount structure for supporting a body with respect to a chassis frame.

[0002]

2. Description of the Related Art FIG. 4 is a sectional view showing an example of a conventional body mount structure. As is clear from this drawing,
The body of the vehicle is supported on the chassis frame 12 via a body mount 30. That is, the body mount 30 includes the frame outrigger 14 integrated with the chassis frame 12 and the floor cross member 16 on the body side.
And is provided between them. Specifically, body mount 3
0 mounting bolts 32 from the vehicle interior
The nut 34 is inserted through a working opening 37 opened from above, and a nut 34 is fastened to the tip of the opening from below the vehicle.

[0003]

In the body mount structure shown in FIG. 4, since the external force input from the chassis frame 12 is received by the floor cross member 16, each component is required to maintain the body strength against the external force. Body reinforcement is required. Further, the floor panel 36 having the opening 37 vibrates due to the vibration input from the chassis frame 12, or a muffled sound is easily generated in the vehicle interior.

An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to increase the strength of a body against the external force by receiving an external force input from a chassis frame by a pillar of the body and a floor cross member. Also, vibration energy input from the chassis frame is dispersed to suppress vibration of the floor panel and muffled noise in the vehicle interior.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object. According to the first aspect of the present invention, a floor cross member near a body pillar is supported by a chassis frame via a body mount. The vehicle body mount structure described above, wherein one end of a mount bolt in the body mount is fixed to a position directly below the pillar in the floor cross member.

[0006] Thus, the external force input from the chassis frame can be received by the pillars of the body and the floor cross member, and the strength of the body with respect to the external force can be increased, and the reinforcement of the body can be simplified accordingly.
Further, the vibration input from the chassis frame is also received by the pillar and the vibration energy is dispersed, so that the vibration of the floor panel and the muffled sound in the vehicle compartment can be suppressed.

According to a second aspect of the present invention, there is provided the vehicle body mount structure according to the first aspect, wherein a nut coupled with a tip portion of the mount bolt is fixed to the floor cross member immediately below the pillar. The mounting bolt is inserted from the chassis frame side toward the floor cross member. According to the present invention, since the mount bolt can be tightened from the chassis frame side to the nut fixed to the floor cross member, the connection between the mount bolt and the nut in the body mount is performed by working from the lower side of the body. be able to.

According to a third aspect of the present invention, there is provided the vehicle body mount structure according to the first aspect, wherein a bolt head of the mount bolt is fixed to the floor cross member immediately below the pillar. A nut is coupled to the portion from the side of the chassis frame. In this case, the nut can be tightened from the side of the chassis frame to the mount bolt fixed to the floor cross member, and these connections can also be performed by working from the lower side of the body.

[0009]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIGS. FIG. 1 is a side view showing the appearance of the vehicle body, FIG. 2 is an enlarged cross-sectional view in the direction of arrows AA in FIG.
FIG. 3 is an enlarged cross-sectional view in the direction of arrows BB in FIG. As shown in these drawings, a chassis frame 12 arranged along a front-rear direction of a vehicle in a body 10 is provided.
, A floor cross member 16 arranged along the width direction of the vehicle is supported by a body mount 20. The body mount structure is provided at a plurality of positions in front, rear, left and right of the body 10, but the figure shows the body mount structure near the rear pillar 19.

Specifically, the body mount 20 is interposed between a frame outrigger 14 fixed to the chassis frame 12 and a position directly below the pillar 19 in the floor cross member 16. The structure of the body mount 20 is roughly classified into a mount rubber 22 which is a cushion member having a bolt insertion hole at the center, and a mount bolt 24 and a nut 28 which are connection members. The mounting rubber 22 is divided into upper and lower parts. The lower rubber is located between the washer 25 of the mounting bolt 24 and the lower surface of the frame outrigger 14, and the upper rubber is located on the upper surface of the frame outrigger 14 and the floor cross. It is located between the lower surface of the member 16.

The nut 28 of the body mount 20 is
The floor cross member 16 immediately below the pillar 19
Is fixed by welding or the like. The frame outrigger 14 and the floor cross member 16 are, as a matter of course, provided with through holes for passing the mounting bolts 24 similarly to the mounting rubber 22. A cylindrical spacer 26 located between the lower surface of the floor cross member 16 and the washer 25 is provided inside the bolt insertion hole of the mount rubber 22. The mounting bolt 24 is inserted into the spacer 26 from the lower side of the body 10, and its tip is connected to the nut 28.
To be joined together. The tightening load of the mount bolt 24 is regulated by the spacer 26 so that the mount rubber 22 is not excessively compressed.

In the body mounting structure constructed as described above, the mounting bolt 24 is fastened to the nut 28 fixed to the floor cross member 16 by working from the lower side of the body 10. can do. Therefore, unlike the prior art shown in FIG. 4, the mounting bolt 32 is inserted from the vehicle interior through the working opening 37 opened in the floor panel 36, and in the present embodiment, an opening is opened in the floor panel 18. It becomes unnecessary.

Since the positional relationship between the mount bolts 24 and the spacers 26 in the body mount 20 is relative, the relationship may be set opposite to that shown in FIG. That is, the mount bolt 24 is inserted in advance downward from the floor cross member 16 at a position directly below the pillar 19, and the bolt head is inserted into the floor cross member 16 in advance.
May be fixed by welding or the like. In this case, body 10
As a result, it is not necessary to open a working opening in the floor panel 18 as described above.

One end (nut 28 or bolt head) of the mounting bolt 24 in the body mount 20 is connected to a pillar 19 in the floor cross member 16.
, The external force input from the chassis frame 12 is applied to the floor cross member 16.
And the rigid pillars 19 for sharing. Therefore, the strength of the body 10 against the external force is increased, and the reinforcement of the body can be simplified accordingly. Similarly, the vibration input from the chassis frame 12 is received by the pillar 19 and the vibration energy is dispersed. Thereby, floor panel 1
8 and muffled noise in the vehicle interior.

[Brief description of the drawings]

FIG. 1 is a side view showing the appearance of a vehicle body.

FIG. 2 is an enlarged sectional view in the direction of arrows AA in FIG. 1;

FIG. 3 is an enlarged cross-sectional view of FIG.

FIG. 4 is a cross-sectional view illustrating an example of a conventional body mount structure.

[Explanation of symbols]

 10 Body 12 Chassis Frame 16 Floor Cross Member 19 Pillar 20 Body Mount 24 Mount Bolt

Claims (3)

[Claims] 1. A vehicle body mount structure in which a floor cross member near a body pillar with respect to a chassis frame is supported via a body mount,
A body mount structure for a vehicle, wherein one end of a mount bolt of the body mount is fixed to a position directly below the pillar in the floor cross member. 2. The vehicle body mount structure according to claim 1, wherein a nut coupled to a tip of the mount bolt is fixed to the floor cross member immediately below the pillar, and the mount bolt is a chassis frame. The vehicle body mount structure is inserted from the side to the floor cross member. 3. The vehicle body mount structure according to claim 1, wherein a bolt head of the mount bolt is fixed to the floor cross member at a position directly below the pillar, and a tip of the mount bolt is on a side of a chassis frame. Body mount structure for vehicles with a nut connected to the body.