JP3802746B2 - Support device for exhaust system parts in vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an exhaust system component support device for a vehicle, in which an exhaust system component provided in an exhaust system connected to an engine is elastically supported via an elastic body at a lower portion of the vehicle body of the vehicle.
[0002]
[Prior art]
Conventionally, when a silencer (muffler), which is an exhaust system component, is elastically supported by a vehicle body, support portions via elastic bodies (mount rubber) are provided separately on the left and right of the silencer, and left and right elastic bodies are Those arranged in a V shape are known (see Japanese Utility Model Publication No. 6-16810).
[0003]
[Problems to be solved by the invention]
However, the conventional apparatus has the following problems.
[0004]
1) In addition to requiring a large number of stays to be fitted to the mount rubber (elastic body), each stay is fixed to the vehicle body side and muffler (exhaust system parts) side by welding. The mounting position on the muffler side also varies from product to product. As a result, the variation in the mounting state of the elastic body such as the above-mentioned V-shaped angle varies greatly, so the variation in the holding position of the muffler on the vehicle body also increases, and there is a margin in advance between the muffler and the surrounding vehicle body structure. It is necessary to set the clearance. In addition, the variation in the mounting state of the elastic body becomes large because of variations in vibration absorption performance that does not transmit vibration to the vehicle body (absorption performance for fine vibrations that are easy to be transmitted to the vehicle body) and displacement restraint in the left-right direction with respect to the muffler It also causes a large variation in force.
[0005]
2) When assembling the muffler to the vehicle body side, it is necessary to pass the stay on the muffler side through the support holes of the plurality of elastic bodies attached to the vehicle body side, which increases the assembling time.
[0006]
The present invention has been made in view of such a situation, and an object of the present invention is to provide a support device for exhaust system parts in a novel vehicle, which solves the above-described problems.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is a vehicle in which an exhaust system component provided in an exhaust system connected to an engine is elastically supported through an elastic body at a lower part of the vehicle body. In an exhaust system component support apparatus , upper and lower striated bodies each having both ends held by a pair of first and second holding parts spaced apart from each other at a lower part of a vehicle body and at least partially made of an elastic body the Nde write sandwiched exhaust equipment from above and below, the exhaust system component elastically supported on the vehicle body lower portion, the first, second holding portion, the upper holding part and lower holding which is spaced apart in the vertical direction Each of the lower striates is held by the upper holding portion on the first holding portion side, and the other ends are the upper holding portion and the lower holding portion on the second holding portion side. Is held on either side, the upper striatum is One end thereof is held by the lower holding portion on the first holding portion side, and the other end is held by either the upper holding portion or the lower holding portion on the second holding portion side, and the upper and lower filaments thereof are held. The bodies cross each other on at least one side of the first holding part , and according to such characteristics, the variation in the mounting state of the upper and lower striates having elasticity is reduced. In addition, it becomes easier to determine the position of the exhaust system part with respect to the linear body at a position where the load of the linear body is equal, and it becomes possible to reduce variation in the holding position of the exhaust system part with respect to the vehicle body. As a result, the clearance setting between the exhaust system parts and the surrounding body parts can be made smaller than conventional ones, the design freedom can be increased and vibrations can be prevented from being transmitted to the body. Binding on the displacement of the ability and the exhaust system parts are variations becomes stabilized reduced. Furthermore, the installation work after the exhaust system parts are located at the assembly position is facilitated, and the assembly work time can be shortened . Furthermore, since the upper and lower striates intersect each other on at least one side thereof and are held by the first and second holding portions, the component force of the striates in the direction of tightening the exhaust system parts is reduced. and can be increased, the displacement restraining force to the exhaust system component is increased, the support of the vehicle body of the exhaust system components by striatal becomes more reliable.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below based on reference examples shown in the accompanying drawings and examples of the present invention.
[0009]
Reference Examples and Examples are when implemented in silencer support apparatus as exhaust system parts, Figures 1-5 show a first reference example, FIG. 1 is provided with a support device silenced device FIG. 2 is an enlarged view taken along the arrow 2 in FIG. 1, FIG. 3 is a view taken along the arrow 3 in FIG. 2, FIG. 4 is a partially broken side view of the striated body, and FIG. It is a figure which shows the support process to the vehicle body of a silencer.
[0010]
In FIG. 1, an exhaust system Ex for exhausting exhaust gas exhausted by its operation to the atmosphere is connected to an automobile engine E, which is generally indicated by the symbol E, and this exhaust system Ex is connected to the engine E. An exhaust pipe 1 connected to the exhaust port of the vehicle body B and extending in the front-rear direction of the vehicle body B, and a catalyst converter CO connected in order from the upstream side to the downstream side of the exhaust pipe 1, upstream (front side) noise reduction And a downstream (rear) silencer MR.
[0011]
In this reference example, the upstream silencer MF is selected as an exhaust system component, and the support device will be described with reference to FIGS. 2 to 5. This support device is integrally provided at the lower part of the vehicle body B. A pair of first and second holding portions 2 and 3 which are fixed to the bracket Bb so as to be separated from each other in the left-right direction, and an upper linear body 4 which is fixedly held by these holding portions 2 and 3. And the lower striatum 5.
[0012]
The paired first and second holding portions 2 and 3 are constituted by rod-like stays fixed to the left and right of the bracket Bb, and each stay is in the front-rear direction of the vehicle body B, that is, by this support device. The upstream muffler MF (exhaust system part) supported is extended in the direction of the longitudinal axis, and poppet-like plugs 2 'and 3' are integrally formed at the free end, that is, the front end. .
[0013]
Next, the upper and lower striated bodies 4, 5 are of the same structure, and as shown most clearly in FIG. 4, the whole is solidly formed by an elastic body such as a heat-resistant rubber material, The intermediate portions 4a and 5a are formed in a rod shape having a square cross section, and left and right attachment end portions 4b and 5b; And the insertion hole h penetrated in the front-back direction is each opened in the center part of those attachment end parts 4b and 5b; 4c and 5c, and the 1st and 2nd are each in each insertion hole h. Each of the stays constituting the holding portions 2 and 3 is inserted.
[0014]
Next, the upstream silencer MF is supported at the lower part of the vehicle body B by a pair of first and second holding portions 2 and 3 made of stays and upper and lower linear members 4 and 5 made of elastic bodies. The process will be described.
[0015]
As shown in FIGS. 3 and 5, the upstream silencer MF is provided with glass wool 11 as a sound absorbing material along the inner surface of the silencer body 10, and this glass wool 11 provides a heat insulating effect, Even if the silencer MF is directly supported by the upper and lower linear members 4 and 5 made of an elastic body such as a heat-resistant rubber material, the temperature rise on the outer surface of the side silencer MF is suppressed. The bodies 4 and 5 are not melted, and the contact portions of the linear bodies 4 and 5 with the silencer MF can be made of a rubber material.
[0016]
When the upstream silencer MF is assembled to the vehicle body B, as shown in FIG. 5, the left and right first and second holding portions on the vehicle body B side are attached to the attachment end portions 4b and 4c at both ends of the upper linear member 4 in advance. 2 and 3, that is, the holding portions 2 and 3 are inserted into the insertion holes h of the attachment end portions 4 b and 4 c of the upper linear body 4 from the insertion portions 2 ′ and 3 ′. .
[0017]
On the other hand, for the lower striate body 5, only the attachment end portion 5b at one end is held by the first holding portion 2 on the vehicle body B side.
[0018]
Next, the upstream silencer MF is sandwiched between the lower linear body 5 and the upper linear body 4 so as to be wound from the lower side linear body 5, and the attachment end portion 5 c at the other end of the lower linear body 5 is connected to the vehicle body B side. The second holding unit 3 is held as described above to complete the assembly (see FIGS. 2 and 3).
[0019]
Accordingly, the work after the upstream silencer MF is positioned at the attachment position is the work of simply fixing the attachment end portion 5c at the other end of the lower filament 5 to the second holding part 3 on the vehicle body B side. Thus, the assembly time is shortened.
[0020]
Therefore, in the upstream silencer MF (exhaust system component) support device configured as described above, the upper and lower linear members 4 and 5 made of an elastic body are restrained in a paired state. Since the first and second holding portions 2 and 3 are provided only on the vehicle body B side and not on the upstream silencer MF side, the attached state of the linear bodies 4 and 5 is the first on the vehicle body B side. , And only the variation in the mounting state of the second holding portions 2 and 3, and the variation in the mounting state of the linear bodies 4 and 5 becomes smaller than that of the conventional support device. Furthermore, since the upper and lower wire bodies 4 and 5 and the upstream silencer MF having elasticity can move relative to each other by sliding, the load on the left and right of the wire bodies 4 and 5 becomes equal. The upstream silencer MF is automatically located at the position of the linear bodies 4 and 5. Thus, in addition to the variation in the mounting state of the upper and lower filaments being reduced, the position of the upstream silencer MF relative to the filaments 4 and 5 is also determined by the load on the left and right of the filaments 4 and 5 ( (Tension) can be easily determined at equal positions, so that variation in the holding position of the upstream silencer MF with respect to the vehicle body B is reduced. As a result, the clearance between the upstream silencer MF and the surrounding vehicle body B structure is set as follows: The degree of freedom of design increases, such as being able to be reduced compared to the conventional one, and the variation in the vibration absorbing performance that does not transmit vibration to the vehicle body B and the restraining force against the lateral displacement of the upstream silencer MF (exhaust system parts) is also small. Become stable.
[0021]
Next, a second reference example will be described with reference to FIG. FIG. 6 is a view corresponding to FIG. 3 showing a state in which the upstream silencer MF is supported. In the drawing, the same elements as those in the first reference example are denoted by the same reference numerals.
[0022]
The second reference example is different from the first reference example in the structure for holding the upper and lower striated bodies 4, 5 on the vehicle body B side, that is, fixed to the bracket Bb below the vehicle body B. the first holding portion 2 are: it is constituted by the upper part holding unit 2u and the lower portion holding part 2 d apart in the vertical direction, also the second holding portion 3, holding the upper edges spaced apart in the vertical direction It is composed of parts 3u and a lower portion holding part 3 d, their upper and lower holding portions 2u, 2d; 3u, 3d are symmetrically arranged. The left and right upper holding portions 2u and 3u respectively hold and hold the attachment end portions 4b and 4c at both ends of the upper striate body 4, and the left and right lower holding portions 2d and 3d have the lower striate body 5 The attachment end portions 5b and 5c at both ends are fixedly held. The holding means is the same as that in the first reference example. The upstream silencer MF is sandwiched from above and below by the upper and lower linear members 4 and 5 made of an elastic body, and the upstream silencer MF is elastically supported.
[0023]
Thus, the second reference example also has the same effects as the first reference example. Next, with reference to FIG. 7, the actual施例of the present invention. FIG. 7 is a view corresponding to FIG. 3 showing a state in which the upstream silencer MF is supported. In the drawing, the same elements as those in the first reference example are denoted by the same reference numerals.
[0024]
The actual施例, the upper, and which holding structure to the vehicle body B side of the lower striatum 4 and 5 differs from that of the first reference example, i.e., under the vehicle body B, is fixed to the bracket Bb that the first holding part 2, like the second reference example, is composed of the upper portion holding portion 2u and the lower portion holding part 2 d apart in the vertical direction, the second holding portion 3 is also vertically is composed of the upper portion holding part 3u and the lower portion holding part 3 d apart, they upper and lower holding portions 2u, 2d; 3u, 3d are symmetrically arranged. The left and right upper holding portions 2u and 3u are respectively fixedly holding attachment end portions 5b and 5c at both ends of the lower striate body 5, and the left and right lower holding portions 2d and 3d are respectively connected to the upper striate 4 The attachment end portions 4b and 4c at both ends are fixedly held. The holding means is the same as that in the first reference example. The upstream silencer MF is sandwiched from above and below by the upper and lower linear members 4 and 5 made of an elastic body, and the upstream silencer MF is elastically supported.
[0025]
Thus, the present embodiment also has the same effects as those of the first and second reference examples. Moreover, in this embodiment, the upper and lower striated bodies 4, 5 are arranged on their left and right side portions (this In the invention, at least one side portion) is crossed with each other, and the upper and lower linear members 4, 5 have a longer contact length with the upstream silencer MF than that of the second reference example. In addition, since the tightening angle with respect to the upstream silencer MF at both sides thereof can be made smaller than that of the second reference example, the upstream side of the upper and lower linear bodies 4, 5 can be The component force of the tension in the direction in which the silencer MF is tightened is greater than that of the second reference example, the displacement restraining force to the upstream silencer MF is increased, and the upstream by the upper and lower filaments 4, 5 Support to the side silencer MF is more reliable .
[0026]
Thus, this embodiment also has the same operational effects as the first reference example.
[0027]
Incidentally, shown in FIG. 6, in the embodiment of the second reference example and the present invention, the holding portion of the vehicle body B side, two pairs of upper portion and lower portion holding part 2u, 2d; 3u, 3d Total 4 However, since most of the load of the upstream silencer (exhaust system part) MF acts on the lower filament 5, the upstream silencer (exhaust system part) MF is held at the lower line. It depends on the striatum 5 and is hardly affected by the upper striatum 4. Therefore, there is almost no increase in variation in the holding position of the upstream silencer (exhaust system component) MF due to accumulation of variations in the four holding portions. Further, since the holding position of the upstream silencer (exhaust system part) MF is determined depending on the lower striated body 5, the upper striated body 4 is different from the lower striated body 5 in the holding position on the vehicle body B side. Although it is expected that the left and right loads (tensions) are not equal, the absolute value of the load (tension) of the upper filament 4 where the load of the upstream silencer (exhaust system part) MF does not act is the lower filament 5 The left and right loads (tensions) of the upper striate body 4 are not equal to each other, and the variations in vibration absorption performance and displacement restraining force are not increased.
[0028]
Next, a third reference example will be described with reference to FIGS. FIG. 8 is a view corresponding to FIG. 3 showing a state in which an exhaust pipe as an exhaust system component is supported, and FIG. 9 is a partially cutaway side view of a linear body. In the drawing, the first reference example is shown. The same element is marked with the same symbol.
[0029]
This third reference example is applied to support a component having a high surface temperature, for example, the exhaust pipe 1 by the support device according to the present invention as an exhaust system component. , 105 is different from that of the first reference example. As clearly shown in FIG. 9, the upper and lower striated bodies 104 and 105 are joined to intermediate portions 104 and 105 made of stainless steel, which is a heat resistant material, and enormous end portions e at both ends thereof. Mounting end portions 104b, 105b; 104c, 105c made of a conductive rubber material. And the attachment hole h is opened in the center part of those attachment end parts 104b and 105b; 104c, 105c, respectively.
[0030]
The upper and lower striated bodies 104, 105 have a first holding in which their left and right attachment end portions 104b, 105b and 104c, 105c are fixedly supported by the bracket Bb below the vehicle body B in the left-right direction. The part 2 and the second holding part 3 are fixed and held in the same manner as in the first reference example. The exhaust pipe 1 is sandwiched from above and below by the upper and lower linear bodies 104 and 105, and the exhaust pipe 1 is elastically supported. Then, by bringing the intermediate portions 104a and 105a made of stainless steel into contact with the surface of the exhaust pipe 1, the upper and lower striated bodies 104 and 105 are not deteriorated even when subjected to exhaust heat.
[0031]
Thus, the third reference example also has the same effects as the first reference example. As mentioned above , although the reference example and the Example of this invention were demonstrated, this invention is not limited to the Reference example and Example, A various Example is possible within the scope of the present invention.
[0032]
For example, in the above-described embodiment, the case where the upstream silencer or the exhaust pipe is supported by the support device according to the present invention has been described. However, the downstream silencer and other exhaust system components can be supported thereby. Of course, the upper and lower striates may be entirely or partly constituted by an elastic body other than a rubber material, and further, the upper and lower striates in the front-rear direction. May be arranged at a distance from each other, or a plurality of them may be provided.
[0033]
【The invention's effect】
As described above, according to the present invention, in a support device for exhaust system parts in a vehicle, variation in the holding position of the exhaust system parts with respect to the vehicle body can be reduced, and the exhaust system parts and the surrounding body parts can be reduced. The gap setting can be reduced compared to the conventional one, and the design freedom can be increased. In addition, vibration absorption performance that prevents vibrations from being transmitted to the vehicle body and the variation in restraint force against displacement of exhaust system parts are reduced and stable. To do. Furthermore, the installation work after the exhaust system parts are located at the assembly position is facilitated, and the assembly work time can be shortened.
[0034]
In addition, since the upper and lower striated bodies intersect each other on at least one side thereof and are held by the first and second holding portions, the component force of the striated body in the direction of tightening the exhaust system parts is increased. The displacement restraining force to the exhaust system parts can be increased, and the support of the exhaust system parts to the vehicle body by the striate body is further ensured.
[Brief description of the drawings]
FIG. 1 is a perspective view of an exhaust system provided with a silencer support device according to a first reference example . FIG. 2 is an enlarged view taken along arrow 2 in FIG. 1. FIG. 3 is a view taken along arrow 3 in FIG. shows a partially broken side view Figure 5 while supporting the Figure 6 upstream silencer showing a supporting process of the vehicle body of the muffler of the striatum, same view as FIG. 3 (a second reference example )
FIG. 7 is the same view as FIG. 3 showing a state where the upstream silencer is supported ( an embodiment of the present invention ).
FIG. 8 is the same view as FIG. 3 showing a state in which the exhaust pipe is supported ( third reference example).
[FIG. 9] Partially cutaway side view of a striated body ( third reference example)
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Exhaust pipe 2 as exhaust system parts ... 1st holding | maintenance part
2d · · · · first upper portion holding part 3 of the lower holding portion 2u · · · · first holding portion of the holding portion of the ..... second holding portion
3d · · · · upper portion holding part of the second holding portion-side lower holding part 3u · · · · second holding portion of the
4 ... Upper striatum
5 ... Lower striatum B ... Car body E ... Engine Ex ... Exhaust system MF ... Upstream silencer as exhaust system parts

Claims (1)

An exhaust system in a vehicle in which an exhaust system component (MF; 1) provided in an exhaust system (Ex) connected to the engine (E) is elastically supported via an elastic body at a lower part of the vehicle body (B) of the vehicle. In the component support device ,
Body (B) first forming a pair of spaced from each other in the lower part, the upper and lower striatum least a portion across the second holding portion (2, 3) is respectively held is made of an elastic material the (4,5), the exhaust system component; Nde write sandwiched (MF 1) above and from below, the exhaust system component; elastically supporting the (MF 1) body (B) at the bottom,
The first and second holding portions (2, 3) are each composed of a set of an upper holding portion (2u, 3u) and a lower holding portion (2d, 3d) that are spaced apart in the vertical direction,
One end of the lower linear body (5) is held by the upper holding part (2u) on the first holding part (2) side, and the other end is the upper holding part on the second holding part (3) side. (3u) and the lower holding part (3d) are held by either one of
One end of the upper filament (4) is held by the lower holding part (2d) on the first holding part (2) side, and the other end is the upper holding part on the second holding part (3) side. (3u) and the lower holding part (3d) are held on the other,
The apparatus for supporting exhaust system parts in a vehicle, characterized in that the upper and lower linear bodies (4, 5) intersect each other on at least one side of the first holding part (2) .

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