JPH0635746Y2 - Muffler hanger mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a muffler hanger mounting structure for suspending an exhaust pipe system including an exhaust pipe, a muffler, a catalytic converter and the like in a passenger car at a lower portion of a vehicle body. .

(Prior Art) An example of a conventional mounting structure is shown in FIGS. 3 and 4.

In FIGS. 3 and 4, a floor pan 1 has a backbone 2 extending in the front-rear direction of the vehicle body at the center thereof. Reference numeral 3 denotes a seat cross member that is fixed to the upper surface of the floor pan 1 at a distance in the front-rear direction and extends in the vehicle width direction, and a front seat is mounted on this. Reference numeral 4 denotes a backbone link hose fixed to the backbone 2 so as to cover the backbone 2, and 5 denotes a muffler arranged at the lower portion of the backbone 2, which includes a bracket 6 extending in the vehicle width direction. A muffler hanger 7 is fastened by a bolt 8 to a portion to which the seat cross member 3 is fixed. The inner end of the muffler hanger 7 is made of rubber O
The ring 9 is suspended, and the O-ring 9 is engaged with the tip of the bracket 6.

(Problems to be Solved by the Invention) In the above-described conventional mounting structure, the muffler hanger is fastened to a portion to which the seat cross member is fixed, that is, a portion having high rigidity, but a load applied to the exhaust pipe system. In some cases, the muffler hanger must be attached to the middle position of the seat cross member in order to reduce the vibration of the exhaust pipe system. In this case, since a cross member is further provided at an intermediate position between the pair of seat cross members to increase the rigidity, there is a problem that the cost increases.

(Means for Solving the Problems) The present invention was proposed to solve the above problems, and the gist thereof is that it is fixed on the backbone of the floor panel so as to cover it. The lower portion of the backbone link hose is bulged between the seat cross members fixed to the upper surface of the floor panel at a distance in the front-rear direction, and the bulging portion and the backbone form a closed cross-section structure. A muffler hanger mounting structure is characterized in that muffler hangers are fastened at two points sandwiching the structure.

(Operation) Since the present invention has the above configuration, the load acting on the muffler hanger is input to the closed cross-section structure.

(Embodiment) One embodiment of the present invention is shown in FIGS. 1 and 2.

The lower portion of the backbone link hose 4 is bulged between the seat cross members 3, and the bulging portion 9 and the backbone 2 form a closed cross-section structure 10. Then, the muffler hanger 7 is fastened with bolts 8 at two points sandwiching the closed cross-section structure 10. Other configurations are similar to those of the conventional one shown in FIGS. 3 and 4, and corresponding members are designated by the same reference numerals.

Then, the vertical input acting on the muffler hanger 7 is transmitted to the seat cross member 3 via the closed cross-section structure 10.

(Effects of the Invention) In the present invention, since the closed cross-section structure is formed by bulging the lower part of the backbone phosphorus hose between the seat cross members, and the muffler hanger is fastened to two points sandwiching the closed cross-section structure. The muffler hanger can be firmly attached to the middle position of the seat cross member without the need for a cross member in the middle of the seat cross member. By making the rigidity of the closed cross-section structure weaker than that of the seat cross member, it is possible to prevent the vibration from the muffler hanger from being transmitted to the seat through the seat cross member and to the floor panels of the front and rear passengers. It is also possible to prevent vibrations from being transmitted through.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention. FIG. 1 is a perspective view of a floor panel, and FIG. 2 is a sectional view taken along line II-II of FIG. FIGS. 3 and 4 show an example of a conventional structure. FIG. 3 is a perspective view of a floor pan, and FIG. 4 is a perspective view of FIG.
It is sectional drawing which follows the IV-IV line. Floor panel ... 1, Backbone ... 2, Backbone link hose ... 4, Seat cross member ... 3, Swelling part ...
9, closed cross-section structure… 10, muffler hanger… 7

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kei Fujita No. 1 Nakashiniri, Hashime-cho, Okazaki-shi, Aichi Mitsubishi Motors Engineering Co., Ltd. Okazaki Plant

Claims (1)

[Scope of utility model registration request] 1. A lower part of a backbone link hose fixed so as to cover the backbone of a floor panel so as to cover the backbone, and is expanded between seat cross members fixed to the upper surface of the floor panel at a distance in the front-rear direction. A muffler hanger mounting structure, characterized in that a closed cross-section structure is formed by the bulging portion and the backbone, and a muffler hanger is fastened to two points sandwiching the closed cross-section structure.