JPH074825U - Support structure for catalytic converter - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a support structure for a catalytic converter that supports the catalytic converter at both sides of the connection position between the catalytic converter and the exhaust pipe and suppresses vibration of the exhaust pipe. [Structure] Upstream exhaust pipe 6a and downstream exhaust pipe 6 of exhaust pipe 6
The upstream and downstream connecting pipes 3a and 3b connecting the catalytic converter 1 with b are supported by a hanger arm 8, and the hanger arm 8 is attached to the main body via an elastic material 10. With this support structure, the position with high weight distribution is supported in a well-stiffened area in a well-balanced manner.
Generation of vibration of the exhaust pipe 6 is suppressed. Further, by supporting the connecting pipe by the hanger arm 8 via the heat insulating material 4 covering the catalytic converter 1, it is difficult for the heat of the catalytic converter 1 to be conducted to the main body side, and the supporting stress is not directly applied to the catalytic converter 1. , Heat resistance and vibration resistance are improved.

Description

[Detailed description of the device] [Industrial applications]

 The present invention relates to a support structure for a catalyst converter installed in the middle of an exhaust pipe arranged under the floor of an automobile body.

[Prior art]

 The catalytic converter is installed in the middle of the exhaust pipe and is suspended and supported by the mount member under the floor of the automobile body. Since the exhaust pipe is a site to which high heat and vibration are applied, the support for it is also designed to be heat and vibration resistant. FIG. 3 shows a conventional catalyst converter support structure in which a required position of the exhaust pipe 21 to which the catalytic converter 22 is attached is supported from the floor of the body 23. The exhaust pipe 21 is supported by a hanger rubber between the body-side hanger 24 fixed to the body 23 and the exhaust pipe-side hanger 26 attached to the exhaust pipe 21 as shown in the figure in consideration of a vibration-proof function. 25 are inserted.

[Problems to be solved by the device]

 However, with the conventional support structure described above, the dynamic balance is often lost due to the mounting position of the catalytic converter, and the vibration of the exhaust pipe increases, causing noise. The data hanger rubber 25 is provided at a position distant from the catalytic converter 22, which has a high temperature, to suppress heat transfer as much as possible. The present invention provides a catalyst converter support structure that solves the above problems by forming a stable support structure by supporting the catalyst converter at both sides of the connection position of the catalyst converter and the exhaust pipe. The purpose is.

[Means for Solving the Problems]

 In order to achieve the above object, the means adopted by the present invention is a supporting structure of a catalytic converter arranged between an upstream exhaust pipe and a downstream exhaust pipe of an exhaust pipe extending from an engine to an exhaust end. An upstream and downstream connecting pipe connecting the catalytic converter and the upstream and downstream exhaust pipes is supported by a hanger arm attached to the main body via an elastic material. It is configured as a support structure. Further, it is advantageous that the supporting structure of the above-mentioned catalytic converter is constructed as a supporting structure in which the hanger arm supports the above connecting pipe through a heat insulating material.

[Action]

 According to the present invention, the upstream and downstream connecting pipes for connecting the catalyst converter between the upstream exhaust pipe and the downstream exhaust pipe of the exhaust pipe are supported by the hanger arm, and the hanger arm supports the elastic material. It is attached to the main body via. With this support structure, the catalyst converter is connected, the weight distribution is high, and the exhaust pipe is supported in a highly rigid position in a well-balanced manner, thus suppressing the occurrence of vibration. Also, by supporting the connecting pipe with the hanger arm via the heat insulating material that covers the catalytic converter, the heat of the catalytic converter is difficult to conduct to the main body side, and the supporting stress is not directly applied to the catalytic converter. The effect is improved.

【Example】

 Embodiments embodying the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention. It should be noted that the following embodiments are examples of embodying the present invention and do not limit the technical scope of the present invention. 1 is a horizontal sectional view (a) and a vertical sectional view (b) showing a supporting structure of a catalytic converter according to a first embodiment of the present invention, and FIG. 2 is a catalytic converter according to a second embodiment of the present invention. FIG. 3 is an exploded perspective view showing a support structure for a printer. In FIG. 1, a catalytic converter 1 includes a catalyst 2, connecting pipes 3a and 3b provided at both ends of the catalyst 2, a heat insulating material 4 covering the catalyst 2 and each connecting pipe 3a, 3b, and the heat insulating material 4. And a cover 5 for covering. This catalytic converter 1 is installed in the exhaust pipe 6 by connecting the upstream exhaust pipe 6a of the exhaust pipe 6 from the engine to the exhaust end and the connecting pipe 3a, and the downstream exhaust pipe 6b to the connecting pipe 3b. To be done. In order to support the exhaust pipe 6 provided with the catalytic converter 1 on the body (main body) 7, ring-shaped collars 9a, 9b are fitted to both ends of the cover 5, Both ends of the first hanger arm 8 are welded to the collars 9a and 9b. Further, a first hanger 11 is attached to the first hanger arm 8, and the first hanger 11 and the second hanger 12 attached to the body 7 side are a hanger rubber (elastic material) 10. Connected via. With the above configuration, since the catalytic converter 1 and the exhaust pipe 6 are supported via the heat insulating material 4, the catalyst 2 is not directly loaded, so damage due to vibration is prevented, and the first hanger 11 is overheated. Since it does not, the hanger rubber 10 is not deteriorated by overheating, and durability and reliability are improved. Furthermore, since the catalytic converter 1 is supported at both ends, a well-balanced support is achieved. Next, a second embodiment of the present invention will be described with reference to FIG. The same elements as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In FIG. 2, in the second hanger arm 13 according to the second embodiment, the rounded portions 13a and 13b at the tip formed in a U-shape are directly connected to the connecting pipes 3a and 3b of the catalytic converter 1. Welded. As shown, the second hanger arm 13 supports the catalytic converter 1 at both ends thereof, and is attached to the body 7 from the first hanger 11 through the hanger rubber 10 as in the first embodiment. It is connected to the second hanger 12 and supports the catalytic converter 1 and the exhaust pipe 6. The catalyst 2 and the connecting portions 3a and 3b are covered with the heat insulating materials 4a and 4b and the covers 5a and 5b as in the first embodiment. According to the above configuration, the catalytic converter 1 is disposed in the exhaust pipe 6, so that the catalytic converter 1 and the exhaust pipe 6 can be supported at a position where the weight is large, and the highly rigid portion is supported in a well-balanced manner. Therefore, the support strength is high, and the support with less vibration is provided.

[Effect of device]

 As described above, according to the present invention, the upstream and downstream connecting pipes connecting the catalytic converter between the upstream exhaust pipe and the downstream exhaust pipe of the exhaust pipe are supported by the hanger arm. A hanger arm is attached to the body via an elastic material. With this support structure, the catalytic converter is connected, the weight distribution is high, and the exhaust pipe is supported in a highly rigid position in a well-balanced manner, providing stable support and suppressing vibration. In addition, by supporting the connecting pipe with the hanger arm through the heat insulating material that covers the catalytic converter, the heat of the catalytic converter is difficult to conduct to the main body side, and the supporting stress is not directly applied to the catalytic converter. The effect is improved.

[Brief description of drawings]

FIG. 1 is a horizontal sectional view (a) and a vertical sectional view (b) showing a supporting structure of a catalytic converter according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a support structure for a catalytic converter according to a second embodiment of the present invention.

FIG. 3 is a perspective view showing a supporting structure of a catalytic converter according to a conventional example.

[Explanation of symbols]

 1 ... Catalytic converter 2 ... Catalyst 3a, 3b ... Connection pipe 4 ... Insulation material 6 ... Exhaust pipe 6a ... Upstream exhaust pipe 6b ... Downstream exhaust pipe 7 ... Body (main body) 8 ... 1st hanger arm 10 ... hanger rubber (buffer material) 13 ... 2nd hanger arm

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location // F16F 15/08 G 9138-3J

Claims (2)

[Scope of utility model registration request] 1. A support structure of a catalytic converter arranged between an upstream exhaust pipe and a downstream exhaust pipe of an exhaust pipe extending from an engine to an exhaust end, wherein the catalytic converter and the upstream and downstream exhausts A support structure for a catalytic converter, characterized in that the upstream and downstream connecting pipes connecting the pipes are supported by hanger arms attached to the main body via elastic members. 2. The support structure for a catalytic converter according to claim 1, wherein the hanger arm supports the connection pipe via a heat insulating material.