JP2018062912A - Support structure of exhaust muffler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support structure of an exhaust muffler of a vehicle rear part which can suppress the damage of the constituent component adjoining the exhaust muffler at a vehicle front side even at a vehicle rear collision.SOLUTION: In an exhaust muffler 19, a support hook 23 is joined to a front part, and a support hook 26 is joined to a rear part. A support hook 21 and a support hook 24 are joined to a rear frame 11. Tips of the support hook 23 and the support hook 21 are inserted into holes of a rubber mount 22. Tips of the support hook 26 and the support hook 24 are inserted into holes of the rubber mount 25. The tip of the support hook 21 is inserted into the hole of the rubber mount 22 toward the outside from the inside of a vehicle width direction. The tip of the support hook 26 is inserted into the hole of the rubber mount 25 toward a rear side from a front side of a vehicle fore-and-aft direction.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an exhaust silencer support structure for a vehicle body at the rear of a vehicle.

  In the vehicle, the exhaust silencer is disposed below the floor at the rear of the vehicle. A plurality of support hooks each having a pin shape are joined to each of the exhaust silencer and the frame of the vehicle body. Then, the exhaust silencer is attached by inserting the respective end portions of the support hook joined to the exhaust silencer and the support hook joined to the frame of the vehicle body into the hole of the rubber mount (patent) Reference 1).

  In this way, when a pair of support hooks are inserted into the rubber mount and the exhaust silencer is supported and fixed to the vehicle, high production efficiency can be ensured, and the exhaust silencer can also be caused by vibration during vehicle travel. It is possible to prevent the support fixing of the detachment.

JP 2009-12777 A

  However, in the structure of the prior art, there is a concern that the exhaust silencer is pushed to the front side of the vehicle at the time of rearward collision of the vehicle and damages other components arranged on the front side of the vehicle. For example, in a vehicle, a battery, an electric motor, an engine, or the like may be disposed adjacent to the front of the exhaust silencer. There is a concern that these components may be damaged.

  In particular, when the engine is disposed adjacent to the vehicle front side of the exhaust silencer (in the case of the rear engine), the length of the exhaust pipe cannot be increased, and the exhaust silencer is large in order to ensure the silencing performance. It will become. In such a case, there is a particular concern about engine breakage at the time of rear-end collision of the vehicle.

  The present invention is intended to solve the above-described problems, and damages to other components disposed adjacent to the front side of the vehicle with respect to the exhaust silencer even in the event of a rear-end collision of the vehicle. It is an object of the present invention to provide a support structure for an exhaust silencer at the rear of a vehicle that can suppress the above-described problem.

  An exhaust silencer support structure according to an aspect of the present invention includes an exhaust silencer, a first support hook, a second support hook, a third support hook, a fourth support hook, a first elastic body, A second elastic body.

  The exhaust silencer is disposed at the rear of the vehicle.

  The first support hook is joined to a vehicle front side portion of the exhaust silencer and has a pin shape or a rod shape.

  The second support hook is joined to a vehicle rear side portion of the exhaust silencer and has a pin shape or a rod shape.

  The third support hook is joined to a portion of the vehicle body at the rear of the vehicle corresponding to the first support hook, and has a pin shape or a rod shape.

  The fourth support hook is joined to a portion of the vehicle body at the rear of the vehicle corresponding to the second support hook, and has a pin shape or a rod shape.

  The first elastic body has two holes, and the first support hook is inserted into one hole, and the third support hook is inserted into the other hole.

  The second elastic body has two holes, and the second support hook is inserted into one hole, and the fourth support hook is inserted into the other hole.

  In the exhaust silencer support structure according to this aspect, the first support hook is inserted in the vehicle width direction with respect to the one hole of the first elastic body, and the second support hook is the first support hook. Two elastic bodies are inserted into the one hole from the vehicle front side toward the vehicle rear side.

  In this aspect, the second support hook joined to the rear portion of the exhaust silencer is inserted into the one hole portion of the second elastic body from the vehicle front side toward the rear side. For this reason, at the time of rear-end collision of the vehicle, the second support hook is pushed forward of the vehicle and is detached from the second elastic body.

  Moreover, in the said aspect, the 1st support hook joined to the front part of the exhaust silencer is inserted in the vehicle width direction with respect to one hole part of a 1st elastic body. Therefore, when the second support hook is detached from the second elastic body, the exhaust silencer rotates around the insertion portion of the first support hook into the first elastic body, and the rear side of the exhaust silencer is located below the vehicle. It will fall into. Therefore, in this aspect, the exhaust silencer does not horizontally move forward of the vehicle at the time of a rear collision of the vehicle.

  Therefore, in the above aspect, it is possible to suppress damage to other components arranged adjacent to the front side of the vehicle with respect to the exhaust silencer even at the time of a rear-end collision of the vehicle.

  In the exhaust silencer support structure according to another aspect of the present invention, in the vertical direction of the vehicle, the insertion position of the second support hook with respect to the one hole of the second elastic body is a height at which the exhaust silencer exists. Is within the range.

  In this aspect, since the insertion position of the second support hook with respect to one hole of the second elastic body is within the range of the height of the exhaust silencer, the exhaust silencer is placed in front of the vehicle at the time of rear-end collision of the vehicle. The second support hook will be pushed before being pushed towards. For this reason, the second support hook is detached from the second elastic body before the exhaust silencer is pushed forward. Therefore, it is possible to more reliably suppress damage to other components adjacent to the front side of the vehicle at the time of rearward collision of the vehicle.

  In the exhaust silencer support structure according to another aspect of the present invention, in the vehicle vertical direction, the insertion position of the first support hook with respect to the one hole of the first elastic body is the one of the second elastic body. It is above the insertion position of the second support hook with respect to the hole portion.

  In this aspect, the insertion position of the first support hook and the insertion position of the second support hook are set as described above, so that when the second support hook is pushed during the rear-end collision of the vehicle, The exhaust silencer is rotated smoothly around the insertion position.

  In the exhaust silencer support structure according to another aspect of the present invention, in the vertical direction of the vehicle, the insertion position of the first support hook with respect to the one hole of the first elastic body is the height direction of the exhaust silencer. It is below the center position.

  In this aspect, by setting the insertion position of the first support hook to the above position, when the second support hook is detached at the time of rearward collision of the vehicle, the exhaust silencer rotates and drops greatly downward in the vehicle. . Therefore, damage to other components adjacent to the front side of the vehicle with respect to the exhaust silencer can be more effectively suppressed.

  In the exhaust silencer support structure according to another aspect of the present invention, in the above configuration, the fourth support hook is also directed from the vehicle front side to the vehicle rear side with respect to the one hole portion of the second elastic body. Is plugged in.

  In this aspect, at the time of rear-end collision of the vehicle, the second support hook and / or the fourth support hook are detached from the second elastic body, and the exhaust silencer is centered on the tip of the first support hook as described above. Rotate and fall. Thereby, damage to other component parts adjacent to the front side of the vehicle with respect to the exhaust silencer can be more effectively suppressed.

  In the exhaust silencer support structure according to another aspect of the present invention, in the above configuration, the fourth support hook is directed from the vehicle rear side to the vehicle front side with respect to the one hole portion of the second elastic body. Is plugged in.

  In this aspect, the fourth support hook is unlikely to be detached from the second elastic body at the time of the rear collision of the vehicle, whereas the second support hook is detached from the second elastic body. In this manner, the support hook that is detached from the second elastic body at the time of the rear collision of the vehicle can be specified as the second support hook. As a result, it is easy to perform a reliable structural design for more effectively suppressing damage to other components adjacent to the front side of the vehicle with respect to the exhaust silencer.

  In the exhaust silencer support structure according to another aspect of the present invention, in the above configuration, an inclined base portion having a surface facing the rear of the vehicle is provided on a vehicle rear side portion of the exhaust silencer. The surface of the inclined base portion is inclined from the vehicle rear side to the front side as it goes from the lower side to the upper side in the vehicle up-down direction, and the fourth support hook is relative to the vehicle body at the rear of the vehicle. Are joined at a height position corresponding to the inclined base portion in the vehicle vertical direction.

  In this aspect, the fourth support hook pushed to the front side of the vehicle comes into contact with a part of the surface of the inclined base portion at the time of the rear collision of the vehicle. Further, as the fourth support hook is further pushed forward, a downward force is applied to the surface of the inclined pedestal, so that the exhaust silencer can be more reliably dropped down the vehicle. Therefore, it is possible to more effectively suppress damage to other components adjacent to the front side of the vehicle with respect to the exhaust silencer at the time of a rear collision of the vehicle.

  In the exhaust silencer support structure according to another aspect of the present invention, in the above configuration, the fourth support hook is a joint portion of the vehicle rear portion to the vehicle body and extends in the vehicle width direction.

  In this aspect, since the joint portion of the fourth support hook with the vehicle body is configured to extend in the vehicle width direction, even when the fourth support hook is pushed forward with a slight inclination at the time of rearward collision of the vehicle, The extending part can be reliably brought into contact with the surface of the inclined base part. Therefore, it is possible to more effectively suppress damage to other components adjacent to the front side of the vehicle with respect to the exhaust silencer at the time of a rear collision of the vehicle.

  The exhaust silencer support structure according to another aspect of the present invention further includes an engine disposed on the vehicle front side with respect to the exhaust silencer in the above configuration.

  In this aspect, the engine is disposed adjacent to the front side of the vehicle with respect to the exhaust silencer. However, as described above, it is possible to suppress damage to the engine due to the exhaust silencer during a rear-end collision of the vehicle. It becomes.

  According to another aspect of the present invention, there is provided an exhaust silencer support structure according to another aspect of the present invention, wherein the exhaust silencer support structure is further disposed between the exhaust silencer and the engine, and an exhaust gas path is connected to the exhaust silencer and the engine. Each of the exhaust silencer and the catalytic converter has a long cylindrical shape, and is arranged so that the longitudinal direction is the vehicle width direction.

  In this aspect, the engine, the catalytic converter, and the exhaust silencer are arranged in a dense state, but damage to the catalytic converter and the engine at the time of a vehicle rear-end collision can be effectively suppressed.

  In the exhaust silencer support structure according to another aspect of the present invention, the exhaust gas path between the exhaust silencer and the catalytic converter is connected by a flexible tube.

  In this aspect, since the exhaust silencer and the catalytic converter are connected by the flexible tube, it is difficult to inhibit the exhaust silencer from rotating and dropping at the time of rear-end collision of the vehicle. Therefore, it is possible to effectively suppress damage to the catalytic converter and the engine at the time of rear-end collision of the vehicle.

  An exhaust silencer support structure according to an aspect of the present invention includes an exhaust silencer, a first support hook, a second support hook, a third support hook, a fourth support hook, a first elastic body, A second elastic body.

  The exhaust silencer is disposed at the rear of the vehicle.

  The first support hook is joined to a vehicle front side portion of the exhaust silencer and has a pin shape or a rod shape.

  The second support hook is joined to a vehicle rear side portion of the exhaust silencer and has a pin shape or a rod shape.

  The third support hook is joined to a portion of the vehicle body at the rear of the vehicle corresponding to the first support hook, and has a pin shape or a rod shape.

  The fourth support hook is joined to a portion of the vehicle body at the rear of the vehicle corresponding to the second support hook, and has a pin shape or a rod shape.

  The first elastic body has two holes, and the first support hook is inserted into one hole, and the third support hook is inserted into the other hole.

  The second elastic body has two holes, and the second support hook is inserted into one hole, and the fourth support hook is inserted into the other hole.

  In the exhaust silencer support structure according to this aspect, at least one of the second support hook and the fourth support hook is from the vehicle front side to the vehicle rear side with respect to the hole portion of the second elastic body. Is plugged in.

  Further, in the exhaust silencer support structure according to this aspect, the vehicle rear side portion of the exhaust silencer is provided with an inclined base portion having a surface facing the rear of the vehicle, and the inclined base portion The surface is inclined from the vehicle rear side to the front side as it goes from the lower side to the upper side in the vehicle vertical direction.

  Furthermore, in the exhaust silencer support structure according to this aspect, the fourth support hook is joined to the vehicle body at the rear of the vehicle at a height position corresponding to the inclined base portion in the vehicle vertical direction. .

  In this aspect, similarly to the above-described aspect, the fourth support hook pushed to the front side of the vehicle comes into contact with a part of the surface of the inclined base portion at the time of rearward collision of the vehicle. Further, as the fourth support hook is further pushed forward, a downward force is applied to the surface of the inclined pedestal, so that the exhaust silencer can be more reliably dropped down the vehicle. Therefore, it is possible to more effectively suppress damage to other components adjacent to the front side of the vehicle with respect to the exhaust silencer at the time of a rear collision of the vehicle.

  In each of the above aspects, it is possible to suppress damage to other components disposed adjacent to the front side of the vehicle with respect to the exhaust silencer even at the time of a rear-end collision of the vehicle.

1 is a schematic perspective view showing a rear structure of a vehicle 1 according to a first embodiment of the present invention as viewed obliquely from below. 2 is a schematic plan view showing the rear structure of the vehicle 1 as viewed from below. FIG. 1 is a schematic side view showing a rear structure of a vehicle 1 as viewed from the side. FIG. 2 is a schematic side view showing a part of the rear structure of the vehicle 1 in an enlarged state as viewed from the side. It is a model perspective view which shows the support structure of the exhaust silencer 19 from diagonally lower side. It is a model side view which shows the behavior of the exhaust silencer 19 at the time of assuming the time of a vehicle rear collision in the state seen from the side. It is a model perspective view which shows the rear part structure of the vehicle which concerns on 2nd Embodiment of this invention in the state seen from diagonally upward. It is a schematic side view which shows the support structure of the exhaust silencer 33 in the state seen from the side. It is a schematic perspective view which shows the fixing structure of the support hooks 34, 37, 40, and 43 for supporting the exhaust silencer 33 from the diagonally lower side. It is a schematic diagram for demonstrating a motion of the exhaust silencer 33 at the time of the vehicle rear collision. It is a schematic perspective view which shows the fixing structure of the support hooks 46 and 47 for supporting the exhaust silencer which concerns on a modification seen from the diagonally lower side.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The form described below is one embodiment of the present invention, and the present invention is not limited to the following form except for the essential configuration.

[First Embodiment]
1. Rear structure of vehicle 1 The rear structure of the vehicle 1 according to the present embodiment will be described with reference to FIGS.

  As shown in FIGS. 1 and 2, the vehicle 1 includes rear frames 11 and 12 extending in the front-rear direction of the vehicle 1, cross members 13 to 15 extending in the width direction of the vehicle 1, and an engine 16. A generator 17, a catalytic converter 18, an exhaust silencer 19, and a flexible tube 20.

  As shown in FIG. 2, the catalytic converter 18 and the exhaust silencer 19 each have a long cylindrical shape, and are arranged side by side so that the longitudinal direction is the width direction of the vehicle 1. The flexible tube 20 connects the exhaust gas path between the catalytic converter 18 and the exhaust muffler 19, and is arranged in a state of turning outside the rear frame 11 in the width direction of the vehicle 1.

  The engine 16 and the generator 17 are disposed adjacent to the catalytic converter 18 on the front side of the vehicle 1. The engine 16 and the generator 17 are arranged side by side in the width direction of the vehicle 1.

  The engine 16 is, for example, a rotary engine, and an output shaft is input to the generator 17. That is, in the vehicle 1 according to the present embodiment, the generator 17 is driven by the engine 16 mounted on the rear portion of the vehicle 1 to generate power.

  As shown in FIG. 2, the exhaust silencer 19 is disposed at a position immediately in front of the vehicle 1 with respect to the cross member 15, and a part thereof is disposed below the cross member 14. The catalytic converter 18 is disposed at a position between the exhaust silencer 19 and the engine 16 and the generator 17 in the front-rear direction of the vehicle 1, and a part thereof is disposed below the cross member 13.

  The engine 16 and the generator 17 are disposed on the front side of the vehicle 1 with respect to the cross member 13.

2. Support structure of exhaust silencer 19 The support structure of the exhaust silencer 19 with respect to the vehicle body of the vehicle 1 will be described with reference to FIGS.

  As shown in FIG. 5, to the exhaust silencer 19, support hooks 23 and 29 are joined to the front portion of the vehicle 1, and support hooks 26 and 32 are joined to the rear portion of the vehicle 1.

  As shown in FIG. 5, the frame 11 has a support hook 21 joined to a portion corresponding to the support hook 23 and a support hook 24 joined to a portion corresponding to the support hook 26. Similarly, a support hook 27 is joined to the frame 12 at a portion corresponding to the support hook 29, and a support hook 30 is joined to a portion corresponding to the support hook 32.

  The support hooks 21, 23, 24, 26, 27, 29, 30, and 32 are made of metal, for example, and are bent or pin-shaped members. The support hooks 21, 23, 24, 26, 27, 29, 30, and 32 are joined to the exhaust silencer 19 or the frames 11 and 12, for example, by welding.

  The support hook 21 and the support hook 23 are connected via a rubber mount 22 having two holes. The support hook 24 and the support hook 26 are connected via a rubber mount 25 having two holes.

  The support hook 27 and the support hook 29 are connected via a rubber mount 28 having two holes. The support hook 30 and the support hook 32 are connected via a rubber mount 31 having two holes.

  The rubber mounts 22, 25, 28, 31 are made of rubber and suppress vibration transmission between the exhaust silencer 19 and the frames 11, 12.

  As shown in the arrow A part of FIG. 3, FIG. 4, and FIG. 5, the tip of the support hook 21 is inserted into the hole of the rubber mount 22 from the outside in the width direction of the vehicle 1 to the inside. . As shown in FIG. 5, the tip of the support hook 27 is inserted into the hole of the rubber mount 28 from the outside in the width direction of the vehicle 1 toward the inside.

  On the other hand, the tip of the support hook 23 is inserted into the hole of the rubber mount 22 from the inner side in the width direction of the vehicle 1 to the outer side. Similarly, the tip of the support hook 29 is inserted into the hole of the rubber mount 28 from the inner side in the width direction of the vehicle 1 to the outer side.

  As shown in the arrow B part of FIG. 3, FIG. 4, and FIG. 5, the tip of the support hook 24 is inserted into the hole part of the rubber mount 25 from the front side to the rear side of the vehicle 1. . As shown in FIG. 5, the tip of the support hook 30 is inserted into the hole of the rubber mount 31 from the front side of the vehicle 1 toward the rear side.

  Further, the tip of the support hook 26 is also inserted into the hole of the rubber mount 25 from the front side to the rear side of the vehicle 1. Similarly, the support hook 32 is also inserted into the hole portion of the rubber mount 31 from the front side of the vehicle 1 toward the rear side.

  Next, as shown in FIG. 4, in the vertical direction of the vehicle 1, the insertion position of the tip of the support hook 23 with respect to the hole portion of the rubber mount 22 is arranged below the center position of the exhaust silencer 19. Although not shown, the same applies to the insertion position of the tip of the support hook 29 into the hole of the rubber mount 28.

  Further, in the vertical direction of the vehicle 1, the insertion positions of the tips of the support hooks 24, 26 with respect to the holes of the rubber mount 25 are within the height range of the exhaust silencer 19, in other words, the upper end of the exhaust silencer 19. Between the bottom and the bottom. Although not shown, the insertion positions of the tips of the support hooks 30 and 32 with respect to the holes of the rubber mount 31 are also arranged within the range of the height where the exhaust silencer 19 exists.

  As shown in FIG. 4, the joining position of the support hook 23 is a portion including the center of the exhaust silencer 19 in the vertical direction of the vehicle 1. Although not shown, in the vertical direction of the vehicle 1, the joining position of the support hook 29 is also a part including the center of the exhaust silencer 19.

3. Behavior of the exhaust silencer 19 at the time of rear-end collision of the vehicle The behavior of the exhaust silencer 19 at the time of rear-end collision of the vehicle will be described with reference to FIG. FIG. 6 is a schematic side view showing the behavior of the exhaust silencer 19 at the time of rear collision of the vehicle as seen from the side.

  As shown in FIG. 6, at the time of the rear collision of the vehicle, at least one of the support hook 24 and the support hook 26 is detached from the rubber mount 25. FIG. 6 shows a state where the support hook 24 is detached from the rubber mount 25.

  When the support hook 24 is detached from the rubber mount 25, the exhaust silencer 19 is centered on the insertion position of each end of the support hook 23, 29 (see FIGS. 4 and 5) with respect to the holes of the rubber mounts 22, 28. As shown by the arrow C, it falls downward while rotating.

  As shown in FIG. 6, the flexible tube 20 used for the connection between the catalytic converter 18 and the exhaust silencer 19 is bent as the exhaust silencer 19 falls while rotating. The rotational drop of the exhaust silencer 19 is not hindered.

4). Effect In the support structure of the exhaust silencer 19 according to the present embodiment, as described with reference to FIG. 6, at the time of the rear impact of the vehicle, at least one of the support hook 24 and the support hook 26 is detached from the hole portion of the rubber mount 25. At least one of the support hook 30 and the support hook 32 is removed from the hole of the rubber mount 31. And since the insertion direction of each front-end | tip of the support hooks 23 and 29 with respect to the hole part of the rubber mounts 22 and 28 is the width direction of the vehicle 1, as shown by the arrow C, the exhaust silencer 19 falls, rotating. To do. Therefore, in the support structure for the exhaust silencer 19 according to the present embodiment, the exhaust silencer 19 does not move horizontally in front of the vehicle at the time of rear-end collision of the vehicle.

  Therefore, in the above-described embodiment, even in the event of a rear-end collision of the vehicle, damage to other components (the engine 16, the generator 17, the catalytic converter 18, etc.) disposed adjacent to the front side of the exhaust silencer 19 is suppressed. Can do.

  Moreover, in the support structure of the exhaust silencer 19 according to the present embodiment, the insertion positions of the support hooks 24, 26, 30, 32 with respect to the holes of the rubber mounts 25, 31 are within the height range where the exhaust silencer 19 exists. Therefore, the support hooks 24, 26, 30, and 32 are pushed forward before the exhaust silencer 19 is pushed toward the front of the vehicle at the time of rearward collision of the vehicle. Therefore, before the force is applied forward to the exhaust silencer 19, at least one of the support hook 24 and the support hook 26 is detached from the hole of the rubber mount 25, and the support hook is removed from the hole of the rubber mount 31. At least one of 30 and the support hook 32 comes off. Therefore, damage to other components (the engine 16, the generator 17, the catalytic converter 18, etc.) adjacent to the front side of the vehicle at the time of a rear collision can be more reliably suppressed.

  In the support structure of the exhaust silencer 19 according to the present embodiment, the insertion position of the tip of the support hook 23 with respect to the hole of the rubber mount 22 and the support hook 29 with respect to the hole of the rubber mount 28 in the vertical direction of the vehicle 1. Is inserted below the center position of the exhaust silencer 19. For this reason, in the present embodiment, when the support hooks 24, 26, 30, 32 are removed from the holes of the rubber mounts 25, 31 at the time of rear-end collision of the vehicle, the exhaust silencer 19 is rotated and greatly falls below the vehicle. Will do. Therefore, damage to other components (the engine 16, the generator 17, the catalytic converter 18, etc.) adjacent to the front side of the vehicle with respect to the exhaust silencer 19 can be more effectively suppressed.

  Further, in the vehicle 1 according to the present embodiment, the exhaust silencer 19 and the catalytic converter 18 are connected by the flexible tube 20, so that, as described above, the exhaust silencer 19 is at the time of the rear impact of the vehicle. Rotating and falling is hardly hindered. Therefore, it is possible to effectively suppress damage to the catalytic converter 18 and the engine 16 at the time of rear-end collision of the vehicle.

[Second Embodiment]
1. Rear structure of vehicle The rear structure of the vehicle according to the second embodiment will be described with reference to FIG. In FIG. 7, the same components as those in the first embodiment are denoted by the same reference numerals. The description of the same components as those in the first embodiment is omitted below.

  As shown in FIG. 7, also in the vehicle according to the present embodiment, the exhaust silencer 33 is disposed in a region between the catalytic converter 18 and the cross member 15 in the front-rear direction. An exhaust gas path is connected between the catalytic converter 18 and the exhaust silencer 33 by the flexible tube 20.

  In the rear part of the exhaust silencer 33, inclined base parts 33a and 33b having a surface facing the rear of the vehicle are provided. The inclined base portions 33a and 33b are provided at both end portions of the exhaust silencer 33 in the vehicle width direction.

  As for each inclination base part 33a, 33b, the surface facing the cross member 15 inclines with respect to the vehicle up-down direction. Specifically, the surfaces of the inclined base portions 33a and 33b are inclined toward the front side of the vehicle and away from the cross member 15 from the lower side to the upper side in the vertical direction of the vehicle.

2. Support structure of exhaust silencer 33 The support structure of the exhaust silencer 33 will be described with reference to FIGS. In FIG. 8 and FIG. 9, the same components as those in the first embodiment are denoted by the same reference numerals. In the following, description of the same components as those in the first embodiment will be omitted.

  As shown in FIGS. 7 to 9, the exhaust silencer 33 has support hooks 36 and 42 joined to the front part of the vehicle and support hooks 39 and 45 joined to the rear part of the vehicle. .

  Further, as shown in FIGS. 8 and 9, the support hooks 34 and 40 are joined to the cross member 13. As shown in FIG. 9, the support hooks 37 and 43 are joined to the cross member 15. Here, the joint portions of the support hooks 37 and 43 to the cross member 15 are extended in the vehicle width direction.

  Also in this embodiment, the support hooks 34, 36, 37, 39, 40, 42, 43, and 45 are, for example, made of metal and are bent or pin-shaped members. Similarly to the first embodiment, the support hooks 34, 36, 37, 39, 40, 42, 43, and 45 are joined to the exhaust silencer 19 or the cross members 13 and 15 by welding, for example. Yes.

  As shown in FIG. 9, the support hook 34 and the support hook 36 are connected via a rubber mount 35 having two holes. The support hook 37 and the support hook 39 are connected via a rubber mount 38 having two holes.

  The support hook 40 and the support hook 42 are connected via a rubber mount 41 having two holes. The support hook 43 and the support hook 45 are connected via a rubber mount 44 having two holes.

  The rubber mounts 35, 38, 41, and 44 are also made of rubber in the same manner as in the first embodiment, and suppress the transmission of vibration between the exhaust silencer 33 and the cross members 13 and 15. .

  As shown in FIGS. 7 to 9, the tip of the support hook 34 is inserted into the hole of the rubber mount 35 from the outside in the width direction of the vehicle toward the inside. As shown in FIG. 9, the tip of the support hook 40 is inserted into the hole of the rubber mount 41 from the outside in the width direction of the vehicle toward the inside.

  On the other hand, the tip of the support hook 36 is inserted into the hole of the rubber mount 35 from the inner side in the width direction of the vehicle toward the outer side. Similarly, the tip of the support hook 42 is inserted into the hole portion of the rubber mount 41 from the inner side to the outer side in the width direction of the vehicle.

  As shown in FIGS. 7 to 9, the tip of the support hook 37 is inserted into the hole of the rubber mount 38 from the front side of the vehicle toward the rear side. As shown in FIG. 9, the tip of the support hook 43 is inserted into the hole of the rubber mount 44 from the front side of the vehicle toward the rear side.

  The tip of the support hook 39 is also inserted into the hole of the rubber mount 38 from the front side to the rear side of the vehicle. Similarly, the support hook 45 is also inserted into the hole portion of the rubber mount 44 from the front side to the rear side of the vehicle.

  Next, as shown in FIGS. 7 and 8, the insertion position of the tip of the support hook 36 with respect to the hole of the rubber mount 35 is arranged below the center position of the exhaust silencer 33 in the vertical direction of the vehicle. Yes. Although not shown, the same applies to the insertion position of the tip of the support hook 42 with respect to the hole of the rubber mount 41.

  Further, in the vertical direction of the vehicle, the insertion positions of the tips of the support hooks 37 and 39 with respect to the holes of the rubber mount 38 are within the range of the height of the exhaust silencer 33, in other words, the upper end of the exhaust silencer 33. It is arranged between the lower end. Although not shown, the insertion positions of the tips of the support hooks 43 and 45 with respect to the holes of the rubber mount 44 are also arranged within the range of the height where the exhaust silencer 33 exists.

  Furthermore, as shown in FIG. 8, in this embodiment, the insertion positions of the support hooks 36 and 42 with respect to the holes of the rubber mounts 35 and 41 are the positions of the support hooks 39 and 45 with respect to the holes of the rubber mounts 38 and 44. It is above the insertion position by a distance X in the vehicle vertical direction.

  Also in this embodiment, in the vertical direction of the vehicle, the joining position of the support hook 36 to the exhaust silencer 33 is a portion including the center of the exhaust silencer 33, and the joining position of the support hook 36 to the exhaust silencer 33 is Is also a portion including the center of the exhaust silencer 33.

  Further, as shown in FIG. 8, in the vertical direction of the vehicle, the joining position of the support hook 37 with respect to the cross member 15 is within the range where the inclined base portion 33 a is provided. Similarly, the joining position of the support hook 43 with respect to the cross member 15 is also within the range where the inclined base portion 33b is provided. Specifically, when an imaginary line is drawn in the horizontal direction from each joint position of the support hooks 37 and 43, it intersects with the inclined surfaces of the inclined base portions 33a and 33b.

3. Behavior of the exhaust silencer 33 at the time of rear-end collision of the vehicle The behavior of the exhaust silencer 33 at the time of rear-end collision of the vehicle will be described with reference to FIG.

  First, since the support structure of the exhaust silencer 33 according to the present embodiment includes the same structure as the support structure of the exhaust silencer 19 according to the first embodiment, the same effect as the first embodiment is obtained. be able to. Furthermore, in the present embodiment, the following effects can be obtained by providing the inclined silencers 33 a and 33 b in the exhaust silencer 33.

  As shown in FIG. 10, at the time of rearward collision of the vehicle, the support hooks 37 and 43 are pushed together with the cross member 15 to the front of the vehicle as indicated by the arrow F and move as indicated by the arrow G (in FIG. 43 is omitted). Then, the joint portions of the support hooks 37 and 43 with respect to the cross member 15 come into contact with the surfaces of the inclined base portions 33a and 33b provided in the exhaust silencer 33 (in FIG. 10, the inclined base portion 33b is illustrated). Omitted).

  Furthermore, when the support hooks 37 and 43 are pushed forward of the vehicle, the joint portions of the support hooks 37 and 43 slide on the surfaces of the inclined base portions 33a and 33b. Thus, the exhaust silencer 33 receives a force as indicated by an arrow H, and rotates and drops around the rotation center Prot that is the insertion position of each tip of the support hooks 36 and 42 with respect to each hole of the rubber mounts 35 and 41. Is promoted.

4). Effects In the support structure for the exhaust silencer 33 according to the present embodiment, the following effects are obtained in addition to the effects obtained by the first embodiment.

  In the vehicle according to the present embodiment, the support hooks 37 and 43 pushed to the front side of the vehicle come into contact with part of the surfaces of the inclined base portions 33a and 33b at the time of the rear collision of the vehicle. As the support hooks 37 and 43 are further pushed forward, a force indicated by an arrow H is applied to the exhaust silencer 33, and the exhaust silencer 33 can be rotated and dropped more reliably. Therefore, it is possible to more effectively suppress damage to other components (the engine 16, the generator 17, the catalytic converter 18, etc.) adjacent to the front side of the vehicle with respect to the exhaust silencer 33 at the time of rear collision of the vehicle.

  Further, in the support structure of the exhaust silencer 33 according to the present embodiment, the joint portions of the support hooks 37 and 43 to the cross member 15 are extended in the vehicle width direction (indicated by arrows D and E in FIG. 9). In the case of a rear-end collision of the vehicle, even if the support hooks 37 and 43 are pushed slightly forward with a slight inclination, the extended portion is surely placed on the surface of the inclined base portions 33a and 33b of the exhaust silencer 33. It can be made to contact. Therefore, it is possible to more effectively suppress damage to other components (the engine 16, the generator 17, the catalytic converter 18, etc.) adjacent to the front side of the vehicle with respect to the exhaust silencer 33 at the time of rear collision of the vehicle.

[Modification]
In the second embodiment, the joint portions of the support hooks 37 and 43 with respect to the cross member 15 are extended in the vehicle width direction, but the present invention is not limited to this. For example, as indicated by arrows I and J in FIG. 11, joint portions of the support hooks 46 and 47 with respect to the cross member 15 may be extended in the vehicle front-rear direction. Even in such a configuration, it is considered that the joint portion comes into contact with the surfaces of the inclined base portions 33a and 33b with a high probability at the time of rearward collision of the vehicle.

  In the first embodiment and the second embodiment, the support hooks 24, 30, 37, 43 are also directed from the vehicle front side toward the rear side with respect to the holes of the rubber mounts 25, 31, 38, 44. However, the present invention is not limited to this. For example, the support hooks 24, 30, 37, 43 can also be inserted into the holes of the rubber mounts 25, 31, 38, 44 from the vehicle rear side toward the front side. Even when such a configuration is adopted, the support hooks 26, 32, 39, and 45 are detached from the rubber mounts 25, 31, 38, and 44 at the time of rear-end collision of the vehicle. As described above, the support hooks that are disengaged from the rubber mounts 25, 31, and 38.44 at the time of rear-end collision of the vehicle can be specified as the support hooks 26, 32, 39, and 45. It becomes easy to perform a reliable structural design for more effectively suppressing damage to other adjacent components (engine 16, generator 17, catalytic converter 18, etc.).

  Further, in the first embodiment and the second embodiment, the so-called rear engine configuration vehicle in which the engine 16 and the generator 17 are arranged on the vehicle front side with respect to the exhaust silencers 19 and 33 is employed. The present invention is not limited to this. For example, a battery (for driving the motor and driving the engine), a control module for controlling the battery, and the like may be arranged on the front side of the vehicle with respect to the exhaust silencers 19 and 33. Even in such a case, by applying the support structure described above, it is possible to reliably suppress damage to the battery, the control module, and the like caused by the exhaust silencers 19 and 33 at the time of rearward collision of the vehicle.

  Moreover, in the said 1st Embodiment and the said 2nd Embodiment, although the engine 16 and the generator 17 were arrange | positioned adjacent to the exhaust silencers 19 and 33 via the catalytic converter 18, The present invention is not limited to this. For example, components other than the catalytic converter may be arranged immediately before the vehicle silencer with respect to the exhaust silencers 19 and 33.

  Also in the second embodiment, a configuration is adopted in which the front ends of the support hooks 36 and 42 are inserted into the holes of the rubber mounts 35 and 41 from the inner side to the outer side in the width direction of the vehicle. However, the present invention is not limited to this. Even in such a configuration, the exhaust silencer 33 can be dropped due to the collision of the support hooks 37 and 43 with the inclined base portions 33a and 33b at the time of rearward collision of the vehicle, so that the exhaust silencer 33 is disposed adjacent to the front. Damage to the other components (engine 16, generator 17, catalytic converter 18, battery etc.) can be effectively suppressed.

1 Vehicle 11, 12 Rear frame 13-15 Cross member 16 Engine 18 Catalytic converter 19, 33 Exhaust silencer 21, 23, 24, 26, 27, 29, 30, 32, 34, 36, 37, 39, 40, 42 , 43, 45, 46, 47 Support hook 22, 25, 28, 31, 35, 38, 41 Rubber mount (elastic body)
33a, 33b Inclined base

Claims (12)

An exhaust silencer located at the rear of the vehicle;
A first support hook that is joined to a vehicle front side portion of the exhaust silencer and has a pin shape or a rod shape;
A second support hook that is joined to a vehicle rear side portion of the exhaust silencer and has a pin shape or a rod shape;
A third support hook which is joined to a portion corresponding to the first support hook in the vehicle body at the rear of the vehicle and has a pin shape or a rod shape;
A fourth support hook that is joined to a portion corresponding to the second support hook in the vehicle body at the rear of the vehicle and has a pin shape or a rod shape;
A first elastic body having two holes, wherein the first support hook is inserted into one hole, and the third support hook is inserted into the other hole;
A second elastic body having two holes, wherein the second support hook is inserted into one hole, and the fourth support hook is inserted into the other hole;
With
The first support hook is inserted in the vehicle width direction with respect to the one hole of the first elastic body,
The second support hook is inserted from the vehicle front side toward the vehicle rear side with respect to the one hole of the second elastic body.
Support structure for exhaust silencer. A support structure for an exhaust silencer according to claim 1,
In the vertical direction of the vehicle,
The insertion position of the second support hook with respect to the one hole of the second elastic body is within the range of the height where the exhaust silencer exists,
Support structure for exhaust silencer. A support structure for an exhaust silencer according to claim 1 or 2, wherein in the vehicle vertical direction,
The insertion position of the first support hook with respect to the one hole of the first elastic body is higher than the insertion position of the second support hook with respect to the one hole of the second elastic body.
Support structure for exhaust silencer. It is a support structure of the exhaust silencer in any one of Claims 1-3,
In the vertical direction of the vehicle,
The insertion position of the first support hook with respect to the one hole of the first elastic body is lower than the center position in the height direction of the exhaust silencer,
Support structure for exhaust silencer. An exhaust silencer support structure according to any one of claims 1 to 4,
The fourth support hook is also inserted from the vehicle front side toward the vehicle rear side with respect to the one hole of the second elastic body.
Support structure for exhaust silencer. An exhaust silencer support structure according to any one of claims 1 to 4,
The fourth support hook is inserted from the vehicle rear side toward the vehicle front side with respect to the one hole of the second elastic body.
Support structure for exhaust silencer. An exhaust silencer support structure according to any one of claims 1 to 6,
In the vehicle rear side portion of the exhaust silencer, an inclined base portion having a surface facing the vehicle rear is provided,
The surface of the inclined base portion is inclined so as to become the front side from the vehicle rear side as it goes from the lower side to the upper side in the vehicle vertical direction,
The fourth support hook is joined to the vehicle body at the rear of the vehicle at a height position corresponding to the inclined base portion in the vehicle vertical direction.
Support structure for exhaust silencer. A support structure for an exhaust silencer according to claim 7,
The fourth support hook is a joint portion with respect to the vehicle body at the rear of the vehicle and extends in the vehicle width direction.
Support structure for exhaust silencer. An exhaust silencer support structure according to any one of claims 1 to 8,
Furthermore, with respect to the exhaust silencer, an engine disposed on the vehicle front side is provided.
Support structure for exhaust silencer. A support structure for an exhaust silencer according to claim 9,
And a catalytic converter disposed between the exhaust silencer and the engine, wherein an exhaust gas path is connected to the exhaust silencer and the engine.
Each of the exhaust silencer and the catalytic converter has a long cylindrical shape, and is arranged so that the longitudinal direction is the vehicle width direction.
Support structure for exhaust silencer. A support structure for an exhaust silencer according to claim 10,
The exhaust gas path between the exhaust silencer and the catalytic converter is connected by a flexible tube,
Support structure for exhaust silencer. An exhaust silencer located at the rear of the vehicle;
A first support hook that is joined to a vehicle front side portion of the exhaust silencer and has a pin shape or a rod shape;
A second support hook that is joined to a vehicle rear side portion of the exhaust silencer and has a pin shape or a rod shape;
A third support hook which is joined to a portion corresponding to the first support hook in the vehicle body at the rear of the vehicle and has a pin shape or a rod shape;
A fourth support hook that is joined to a portion corresponding to the second support hook in the vehicle body at the rear of the vehicle and has a pin shape or a rod shape;
A first elastic body having two holes, wherein the first support hook is inserted into one hole, and the third support hook is inserted into the other hole;
A second elastic body having two holes, wherein the second support hook is inserted into one hole, and the fourth support hook is inserted into the other hole;
With
At least one of the second support hook and the fourth support hook is inserted into the hole portion of the second elastic body from the vehicle front side toward the vehicle rear side,
In the vehicle rear side portion of the exhaust silencer, an inclined base portion having a surface facing the vehicle rear is provided,
The surface of the inclined base portion is inclined so as to become the front side from the vehicle rear side as it goes from the lower side to the upper side in the vehicle vertical direction,
The fourth support hook is joined to the vehicle body at the rear of the vehicle at a height position corresponding to the inclined base portion in the vehicle vertical direction.
Support structure for exhaust silencer.

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