JPH0640311U - Muffler mount structure - Google Patents

Abstract

(57) [Summary] [Objective] The present invention aims to improve the heat shield effect of the heat shield plate against the vibration absorbing mount rubber used for mounting the muffler. [Structure] To mount the muffler 1, the muffler side mounting rod 2 is inserted into the muffler side mounting hole 6 of the mount rubber 5, and the vehicle body side mounting rod 8 is mounted in the vehicle body side mounting hole 9.
The rear plate 12 and / or both side plates 1 of the heat shield plate 11 that shields the mount rubber 5 from heat.
By partially contacting 3B and 13B with the mount rubber 5, heat transfer from the heat shield plate 11 to the mount rubber 5 is reduced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure for mounting a muffler on the bottom of a vehicle body of an automobile or the like.

[0002]

[Prior art]

 Conventionally, as shown in FIGS. 7 and 8, the tip screw part (3) of the mount rod (2) protruding from the side surface of the muffler (1) is attached to the muffler side of the mount rubber (5) via the collar (4). Through the hole (6), screw the nut (7) to the threaded end (3) of the mount rod (2), and further form the slit (10) on the mount rod (8) protruding from the vehicle body side. The muffler (1) is mounted on the vehicle body side through the mount rubber (5) by penetrating the vehicle body side mounting hole (9) of the mounted mount rubber (5).

At this time, in order to protect the mount rubber (5) from heat from the muffler (1), the lower part of the mount rubber (5) is covered with a heat shield plate (11). The heat shield plate (11) is composed of a back plate (12) and a peripheral plate (13) extended from the peripheral edge of the back plate (12), and has a mounting hole (14) for the back plate (12). It is fixed by fitting it to the threaded end (3) of the muffler side mount rod (2) via a washer (15) and tightening it with a nut (7).

[0004]

[Problems to be solved by the device]

 In the above conventional configuration, the back plate (12) of the heat shield plate (11) and the peripheral plate (13) are in close contact with the back surface of the mount rubber (5) and the lower peripheral surface, so that the mount rubber ( When the contact area between the heat shield plate (5) and the heat shield plate (11) increases and the heat shield plate (11) becomes high temperature due to the heat from the muffler (1), it is directly transferred to the mount rubber (5) and shielded. There was a problem that the heat effect could not be obtained sufficiently.

[0005]

[Means for Solving the Problems] As a means for solving the above conventional problems, the present invention attaches the tip end of the mount rod (2) extended from the muffler (1) to the muffler side of the mount rubber (5). The mount rod (8) that extends through the hole (6) and extends from the vehicle body is attached through the mounting hole (9) on the vehicle body side of the mount rubber (5), and the lower part of the mount rubber (5) is attached to the muffler. The muffler mount structure is covered by the heat shield plate (11) attached to the side mount rod (2), and the heat shield plate (11) is formed from the back plate (12) and the lower edge of the back plate (12). It consists of a bottom plate (13A) bent forward and both side plates (13B, 13B) bent forward from both side edges of the back plate (12), and the heat shield against the mount rubber (5). A muffler mount structure is provided in which the back plate (12) and / or the side plates (13B, 13B) of the plate (11) are in partial contact.

[0006]

[Action]

 The muffler (1) penetrates the mount rod (2) extended from the muffler (1) into the muffler side mounting hole (6) of the mount rubber (5), and mounts the mount rod (8) on the vehicle body side to the mount rod (8). It is mounted on the vehicle body side through the mount rubber (5) by penetrating the vehicle body side mounting hole (9) of (5), and the vibration of the automobile etc. during running is absorbed by the mount rubber (5). It has become so.

The mount rubber (5) is protected by the heat shield plate (1) so as not to be deteriorated by heat from the muffler (1). The heat shield plate (11) covers the lower part of the mount rubber (5) with the back plate (12), the bottom plate (13A) and both side plates (13B, 13B) to shield the heat, but the mount rubber ( Since the back plate (12) and / or the bottom plate (13A) of the heat shield plate (11) partially contacts the heat shield plate (11), the heat shield plate (11) is heated to a high temperature by the heat from the muffler (1). Even so, the heat transfer from the heat shield plate (11) to the mount rubber (5) is small.

[0008]

【Example】

 A first embodiment of the present invention is shown in FIGS. In the figure, a mount rod (2) having a tip screw portion (3) smaller in diameter than the main body is inserted from the muffler (1), and a heat shield plate (2) is attached to the tip screw portion (3) via a washer (15). The mounting hole (14) of 11) is fitted, and the tip screw part (3) of the mount rod (2) penetrates the muffler side mounting hole (6) of the mount rubber (5) through the collar (4). The nut (7) is screwed on and tightened. Further, the mount rod (8) extended from the vehicle body side is inserted into the vehicle body side mounting hole (9) of the mount rubber (5).

In this way, the muffler (1) is attached to the vehicle body side via the mount rubber (5), and the mount rubber (5) has an H-shaped slit () to facilitate vibration absorption. 10) is provided to facilitate deformation.

The mount rubber (5) is protected from heat from the muffler (1) by the heat shield plate (11), and the heat shield plate (11) has a mounting hole (14). A back plate (12), a bottom plate (13A) bent forward from the lower edge of the back plate (12), and both side plates (13B, 13B) bent forward from both side edges of the back plate (12). ) Covers the lower part of the mount rubber (5), but a plurality of protrusions (16) are formed around the mounting hole (14) of the back plate (12) of the heat shield plate (11). The back plate (12) contacts the back surface of the mount rubber (5) only at the protrusions (16), thereby transferring heat from the heat shield plate (11) to the mount rubber (5). Have been reduced.

Further, a hook-shaped positioning plate (17) is bent backward from the upper edge of the back plate (12) of the heat shield plate (11), and the leading edge of the positioning plate (17) is (18) abuts the upper flat recess (2A) of the muffler side mount rod (2) to fix the mounting angle of the heat shield plate (11) with respect to the axis of the mount rod (2). .

3 and 4 show a second embodiment of the present invention. In this embodiment, the heat shield plate (11) has a rear plate (12) around a mounting hole (14). A boss (19) is formed, and the boss (19) contacts the back surface of the mount rubber (5) to reduce heat transfer from the heat shield plate (11) to the mount bar (5).

A third embodiment of the present invention is shown in FIGS. 5 and 6. In this embodiment, both side plates (13C, 13C) of the heat shield plate (11) are tapered so as to open upward, and as shown in FIG. 6, the both side plates (13C, 13C) are mounted rubber (5) at the point P. The heat transfer from the heat shield plate (11) to the mount rubber (5) is reduced by making partial contact with the peripheral surface of (1).

[0014]

[Effect of device]

 Therefore, in the present invention, the heat shield effect of the heat shield plate on the mount rubber for mounting the muffler is improved, and the heat deterioration of the mount rubber is better prevented.

[Brief description of drawings]

1 and 2 show a first embodiment of the present invention.

FIG. 1 is an exploded perspective view

FIG. 2 is a side sectional view showing a second embodiment of the present invention.

FIG. 3 is a perspective view of a heat shield plate

FIG. 4 is a side sectional view showing a third embodiment of the present invention.

FIG. 5: Perspective view of heat shield plate

FIG. 6 is a front view showing a conventional example.

FIG. 7 is a side sectional view.

[Figure 8] Front view

[Explanation of symbols]

 1 Muffler 2 Muffler side mounting rod 5 Mount rubber 6 Muffler side mounting hole 8 Body side mounting rod 9 Body side mounting hole 11 Heat shield plate 12 Rear plate 13A Bottom plate 13B, 13C Both side plates 14 Mounting hole 16 Protrusion 19 Boss

Claims (1)

[Scope of utility model registration request] 1. A muffler-side mounting hole of a mount rubber is penetrated by a tip end portion of a mount rod extended from a muffler,
A muffler mount structure in which a mount rod extended from the vehicle body side is penetrated into a vehicle body side mounting hole of a mount rubber, and a lower portion of the mount rubber is covered with a heat shield plate attached to the muffler side mount rod. The heat plate includes a back plate, a bottom plate bent forward from the lower edge of the back plate, and both side plates bent forward from both edges of the back plate. Muffler mount structure, characterized in that the rear plate and / or both side plates of the