JP2023080499A - vehicle - Google Patents

Abstract

To restrain a pedal main body of a brake pedal from being protruded to the rear side largely.SOLUTION: A vehicle 100 comprises a dash panel 14, an internal combustion engine 20, a brake pedal 50, a booster 60 and a spacer 70. The brake pedal 50 comprises a bracket 51, an arm 52 and a pedal body 53. The bracket 51 is fixed to the dash panel 14. The arm 52 extends from the bracket 51 to the lower side. The arm 52 is supported rotatably relative to the bracket 51. The pedal body 53 is connected to a lower end of the arm 52. A device body 61 of the booster 60 is located between the internal combustion engine 20 and the dash panel 14. In addition, the device body 61 is located in front of the arm 52. The spacer 70 is located between the internal combustion engine 20 and the dash panel 14 and upward when viewed from the device body 61.SELECTED DRAWING: Figure 2

Description

The present invention relates to vehicles.

The vehicle of Patent Document 1 includes a dash panel, an internal combustion engine, and a booster. The dash panel separates the engine room and the passenger compartment. The internal combustion engine is located in the engine room. The booster is positioned between the internal combustion engine and the dash panel in the engine room. The booster is connected to a brake pedal located in the passenger compartment. The booster amplifies the force input to the brake pedal.

JP 2016-070092 A

In the vehicle disclosed in Patent Document 1, the brake pedal is rotatably supported with respect to the dash panel. During a frontal collision in which an object collides with such a vehicle from the front, the engine room is crushed and the internal combustion engine moves rearward. When the booster in contact with the internal combustion engine moves rearward, the dash panel is pushed rearward by the booster. At this time, depending on the positional relationship between the booster and the brake pedal, the positional relationship between the internal combustion engine and the booster, and the like, the brake pedal may rotate and protrude into the vehicle compartment.

A vehicle for solving the above problems includes a dash panel that partitions an engine room and a vehicle compartment, an internal combustion engine located in the engine room, and a vehicle that is rotatably supported with respect to the dash panel and located in the vehicle compartment. A vehicle comprising: a brake pedal; and a booster that is connected to the brake pedal and amplifies force input from the brake pedal, wherein the brake pedal includes a bracket fixed to the dash panel. , an arm rotatably supported with respect to the bracket and extending downward from the bracket; and a pedal body fixed to the end of the arm opposite to the bracket, At least a portion of the force device is positioned between the internal combustion engine and the dash panel, and the portion of the booster positioned between the internal combustion engine and the dash panel is defined as a specific portion. The specific portion is located in front of the arm, and in the engine room, between the internal combustion engine and the dash panel and above the booster as viewed from the spacer. I have more.

According to the above configuration, the dash panel is pushed rearward by the spacer when it contacts the internal combustion engine and moves rearward. Similarly, the dash panel is pushed rearward by the rearward movement of the booster in contact with the internal combustion engine. This causes the entire arm and bracket of the brake pedal to move rearward. Therefore, the arm is prevented from rotating rearward due to the arm being largely pushed rearward with respect to the bracket. If the rotation of the arm can be suppressed in this way, it is possible to prevent the pedal body of the brake pedal from protruding significantly rearward.

In the above configuration, the internal combustion engine includes an engine body having cylinders, and a chain case fixed to the engine body, the chain case being positioned in front of the specific portion and the spacer, and The chain case includes a case body defining an internal space, front ribs protruding from the surface of the case body and extending linearly from the front side to the rear side, and protruding from the back side of the case body and extending from the front side. and a back rib linearly extending toward the rear side, and the front rib and the back rib may be positioned at plane-symmetrical locations with the case main body interposed therebetween.

According to the above configuration, the axial rigidity of the chain case can be increased. Therefore, it is less likely that the chain case will be destroyed at an early stage due to a frontal collision of the vehicle, and the impact will not be transmitted to the dash panel and the brake pedal as expected. In addition, since the front ribs and the back ribs are positioned symmetrically, the total length of the front ribs and the back ribs combined does not need to be increased even if the front ribs and the back ribs do not protrude from the case body. Protrusion length can be increased. Therefore, a high reinforcing effect can be obtained without increasing the projection length of each of the front ribs and the rear ribs from the case body.

In the above configuration, when a region of the chain case facing the spacer in the front-rear direction is defined as a first region, and a region facing the specific portion in the front-rear direction is defined as a second region, the front rib and the back rib are arranged in the second region. It may be located in one region.

According to the above configuration, it is possible to improve the axial rigidity of the first region of the chain case located in front of the spacer. Therefore, the impact can be easily transmitted to the relatively upper position of the brake pedal, and the rotation of the arm caused by the arm being pushed rearward with respect to the bracket can be suppressed more reliably.

In the above configuration, when a region of the chain case facing the spacer in the front-rear direction is defined as a first region, and a region facing the specific portion in the front-rear direction is defined as a second region, the axis of the first region extends along the front-rear direction. The rigidity may be higher than the axial rigidity in the longitudinal direction of the second region.

According to the above configuration, compared to the case where the axial rigidity in the longitudinal direction in the first region is the same as the axial rigidity in the longitudinal direction in the second region, the impact is transferred to a relatively upper position of the brake pedal. Easy to tell. Therefore, the impact can be easily transmitted to the relatively upper position of the brake pedal, and the rotation of the arm caused by the arm being pushed rearward with respect to the bracket can be suppressed more reliably.

In the above configuration, the chain case may have a flat surface facing the spacer in a longitudinal direction.
According to the above configuration, even if the positional relationship between the chain case and the spacer is slightly deviated in the event of a frontal collision of the vehicle, the possibility that the plane surface of the chain case contacts the spacer increases. If the spacer contacts the flat surface in this way, it is possible to prevent the impact force from the chain case from being transmitted to the spacer in an unintended direction.

FIG. 3 is a schematic cross-sectional view when the vehicle is viewed downward from above. FIG. 2 is a cross-sectional view taken along line 2-2 in FIG. 1; 3 is an enlarged cross-sectional view taken along line 3-3 in FIG. 2; FIG. FIG. 4 is an explanatory diagram showing a situation at the time of a frontal collision; FIG. 5 is an explanatory diagram showing a situation at the time of a frontal collision according to a comparative example;

<Outline configuration of vehicle>
An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. FIG. In the following description, the front-rear, left-right, and up-down directions refer to the directions viewed from the driver seated in the driver's seat of the vehicle 100 .

As shown in FIG. 1, the vehicle 100 has a front panel 11, a left side panel 12, a right side panel 13, and a dash panel . The front panel 11 , the left side panel 12 , and the right side panel 13 define an interior space of the vehicle 100 together with a bonnet, an undercover (not shown), and the like. The front panel 11, the left side panel 12, and the right side panel 13 are fixed to a frame member of the vehicle 100 (not shown). The front panel 11 constitutes a front wall of the vehicle 100 . The left side panel 12 constitutes the left wall of the vehicle 100 . The right side panel 13 constitutes the right wall of the vehicle 100 . In addition, in FIG. 1, the structure of each part is simplified and illustrated.

The dash panel 14 is positioned rearwardly away from the front panel 11 . The dash panel 14 is fixed to a frame member of the vehicle 100 (not shown). One of the two major surfaces of the dash panel 14 faces forward and the other faces rearward. Therefore, the dash panel 14 partitions the interior space of the vehicle 100 into an engine room X and a vehicle compartment Y. As shown in FIG. The engine room X is a space located forward when viewed from the dash panel 14 . The vehicle compartment Y is a space positioned rearward when viewed from the dash panel 14 . In addition, the main surface is the surface having the largest area among the outer surfaces.

As shown in FIGS. 1 and 2, the vehicle 100 includes an internal combustion engine 20, a brake pedal 50, a booster 60, and a steering wheel 80. As shown in FIG. 1 , the internal combustion engine 20 is positioned substantially in the center of the engine room X when the internal combustion engine 20 is viewed downward from above the vehicle 100 . The internal combustion engine 20 has an engine body 30 and a chain case 40 . The left-right center of the engine body 30 is positioned slightly to the left when viewed from the left-right center of the engine room X. The shape of the engine body 30 is a quadrangular prism as a whole. The engine body 30 has four cylinders 31 as spaces in which fuel is combusted. The four cylinders 31 are arranged side by side.

As shown in FIG. 1, the chain case 40 is fixed to the right wall of the engine body 30. As shown in FIG. Therefore, the chain case 40 is located on the right side of the engine room X when viewed from the left-right center. A specific configuration of the chain case 40 will be described later.

As shown in FIG. 1, the brake pedal 50 is located in the frontmost part of the vehicle compartment Y. As shown in FIG. Also, as shown in FIG. 2 , the brake pedal 50 is positioned behind the chain case 40 . In other words, the brake pedal 50 is located on the right side of the vehicle compartment Y when viewed from the left-right center.

As shown in FIG. 2 , the brake pedal 50 has a bracket 51 , an arm 52 and a pedal body 53 . Bracket 51 is fixed to the rear surface of dash panel 14 . Bracket 51 protrudes rearward from dash panel 14 . The arm 52 has a generally curved bar shape. A first end of the arm 52 is connected to the vicinity of the rear end of the bracket 51 . Arm 52 extends downward from the vicinity of the rear end of bracket 51 . The arm 52 is curved so that the lower side of the arm 52 is located on the rear side. The arm 52 is rotatably supported with respect to the bracket 51 about the connecting portion with the bracket 51 . The pedal body 53 is fixed to the second end of the arm 52 . That is, the pedal body 53 is fixed to the end of the arm 52 opposite to the bracket 51 . The shape of the pedal main body 53 is a substantially rectangular plate shape.

As shown in FIG. 2 , the booster 60 includes a device body 61 and a rod 62 . The device main body 61 is fixed to the front surface of the dash panel 14 . The entire device body 61 is located in the engine room X between the chain case 40 and the dash panel 14 . That is, in this embodiment, the entire area of the device main body 61 is the specific portion. Further, the device main body 61 is positioned in front of the arm 52 . Specifically, the device main body 61 is positioned slightly above the center of the arm 52 and below the connecting portion of the arm 52 and the bracket 51 . Although illustration is simplified in FIG. 2, the device main body 61 is, for example, a brake booster, a master cylinder, a pump, and the like. A first end of the rod 62 is positioned inside the device main body 61 . A portion of the rod 62 including the second end protrudes rearward from the device main body 61 . The second end of the rod 62 is connected to a portion positioned slightly above the arm 52 when viewed from the vertical center and below the connecting portion of the arm 52 and the bracket 51 when viewed.

The rod 62 transmits the rotational motion of the arm 52 to the device main body 61 . Specifically, when the driver of vehicle 100 depresses pedal body 53 of brake pedal 50, arm 52 rotates counterclockwise in FIG. Then, the force from the brake pedal 50 is input to the device main body 61 by moving the rod 62 forward. The device main body 61 amplifies the force input from the brake pedal 50 and transmits the force to a brake device (not shown). As a result, braking force of vehicle 100 is generated by operating the brake device. An example of the braking device is a disc braking device.

As shown in FIG. 1 , the steering wheel 80 is positioned in the vehicle compartment Y behind the brake pedal 50 . In other words, the steering wheel 80 is located on the right side of the vehicle compartment Y when viewed from the left-right center.

<Peripheral configuration of the booster>
As shown in FIG. 2, vehicle 100 includes spacers 70 . The spacer 70 is positioned between the chain case 40 and the dash panel 14 in the engine room X. The spacer 70 is positioned above the device main body 61 . Also, the spacer 70 is positioned in front of the connecting portion of the arm 52 and the bracket 51 . A spacer 70 is fixed to the front surface of the dash panel 14 . The spacer 70 has a quadrangular prism shape as a whole. A front surface 71 of the spacer 70 is slightly inclined so that the lower the spacer 70 is, the more forward it is positioned.

The chain case 40 has a case body 41 . The shape of the case main body 41 is a box shape with an opening on the left side. That is, the case body 41 defines an internal space 41Z. Further, the dimension of the case body 41 in the vertical direction of the vehicle 100 is larger than the dimension of the case body 41 in the longitudinal direction of the vehicle 100 . The case body 41 accommodates a chain (not shown), a plurality of sprockets, and the like in an internal space 41Z.

The case body 41 has a crank through hole 42 , an intake through hole 43 , an exhaust through hole 44 and a raised portion 45 . The crank through-hole 42 penetrates the case main body 41 from side to side. The crank through-hole 42 is located at a location near the lower end of the case body 41 . The position of the crank through-hole 42 corresponds to the position of a crank sprocket connected to a crankshaft (not shown). The intake through hole 43 penetrates the case body 41 in the left and right direction. The intake through-hole 43 is located at a portion near the upper end and near the front end of the case body 41 . The position of the intake through-hole 43 corresponds to the position of an intake sprocket connected to an intake camshaft (not shown). The exhaust through hole 44 penetrates the case body 41 in the left and right direction. The exhaust through-hole 44 is located at a portion near the upper end and near the rear end of the case body 41 . The position of the exhaust through-hole 44 corresponds to the position of an exhaust sprocket connected to an exhaust camshaft (not shown). The protruding portion 45 protrudes to the right with respect to other portions. The raised portion 45 surrounds the exhaust through-hole 44 . Therefore, as shown in FIG. 2, when the chain case 40 is viewed from the right side of the vehicle 100 to the left side, the protuberance 45 has a substantially annular shape.

As shown in FIG. 2, a portion of the chain case 40 is located in front of the device main body 61 and the spacer 70. As shown in FIG. Here, the region of the chain case 40 facing the spacer 70 in the front-back direction is referred to as a first region 40A, and the region of the chain case 40 facing the device body 61 in the front-back direction is referred to as a second region 40B. The first region 40</b>A is a region including the intake through hole 43 , the exhaust through hole 44 and the raised portion 45 . The second area 40B is an area adjacent to the lower side when viewed from the first area 40A.

Of the rear end surface of the case body 41, the surface located in the first region 40A is defined as the facing surface 41A. The facing surface 41A is a flat plane. That is, the facing surface 41A is a flat surface that faces the spacer 70 in the front-rear direction. In the present embodiment, the facing surface 41A is slightly inclined so that the lower it is located, the more forward it is located, and is substantially parallel to the front surface 71 of the spacer 70 . In the longitudinal direction of vehicle 100, the shortest distance from facing surface 41A to spacer 70 is smaller than the shortest distance from the rear end surface of case main body 41 located in second region 40B to device main body 61. As shown in FIG.

As shown in FIG. 3 , the chain case 40 has a plurality of front ribs 46 and a plurality of back ribs 47 . The front rib 46 protrudes from the right surface of the case body 41 . The right surface of the case main body 41 is the surface on the front side of the paper surface in FIG. 2 and the surface on the left side in FIG. As shown in FIG. 2 , the front rib 46 extends linearly in the front-rear direction of the vehicle 100 . The front rib 46 extends from the raised portion 45 to the rear end of the case body 41 . In this embodiment, the chain case 40 has two front ribs 46 . The two front ribs 46 extend parallel to each other. The two front ribs 46 are located in the first region 40A. In this embodiment, the right surface of the case main body 41 is positioned outside the internal space 41Z of the case main body 41, and thus is the surface of the case main body 41. As shown in FIG.

As shown in FIG. 3 , the back rib 47 protrudes from the left surface of the case body 41 . The left surface of the case main body 41 is the surface on the far side of the paper surface in FIG. 2 and the surface on the right side in FIG. Specifically, the rear rib 47 is located on the opposite side of the case body 41 from the front rib 46 . In other words, the front rib 46 and the back rib 47 are positioned in plane-symmetrical positions with the case body 41 interposed therebetween. The back rib 47 extends linearly in the front-rear direction of the vehicle 100 . The back rib 47 extends from the raised portion 45 to the rear end of the case body 41 . In this embodiment, the chain case 40 has two back ribs 47 corresponding to the two front ribs 46 . The two back ribs 47 extend parallel to each other. Two back ribs 47 are located in the first region 40A. In addition, in the present embodiment, the left surface of the case body 41 is the back surface of the case body 41 .

In this embodiment, the front ribs 46 and back ribs 47 are located in the first region 40A, while the front ribs 46 and back ribs 47 are not located in the second region 40B. Therefore, the axial rigidity of the first region 40A of the chain case 40 in the longitudinal direction is higher than the axial rigidity of the second region 40B of the chain case 40 in the longitudinal direction.

<Action of this embodiment>
As shown in FIG. 4, in the vehicle 100, when an object collides with the vehicle 100 from the front, the engine room X is crushed and the internal combustion engine 20 moves rearward. Then, the device main body 61 and the spacer 70 of the booster 60, which are in contact with the chain case 40 of the internal combustion engine 20, move rearward.

<Effects of this embodiment>
(1) Assume that vehicle 100 does not have spacer 70, as shown in FIG. In this case, the second region 40B of the chain case 40 first contacts the device main body 61 when the vehicle 100 has a frontal collision. Then, of the dash panel 14, only the vicinity of the device main body 61 is pushed rearward. Then, the rearward movement amount of the arm 52 becomes larger than the rearward movement amount of the bracket 51 . 5, the arm 52 rotates clockwise in FIG. As a result, the amount of rearward movement of the pedal body 53 of the brake pedal 50 increases, that is, the pedal body 53 protrudes greatly rearward.

As shown in FIG. 4, the vehicle 100 includes a spacer 70 in this embodiment. Therefore, in the event of a frontal collision of the vehicle 100, of the dash panel 14, the vicinity of the spacer 70 is also pushed rearward. Therefore, the entire bracket 51 and arm 52 move rearward. If the amount of rearward movement of the arm 52 and the bracket 51 is about the same, the movement of the arm 52 centering on the connecting portion with the bracket 51 is greater than that of the arm 52 of the comparative example indicated by the two-dot chain line in FIG. Rotation is suppressed. As a result, it is possible to prevent the pedal body 53 from protruding to the rear side.

(2) Since the chain case 40 has the internal space 41Z, its axial rigidity is lower than that of the engine body 30 . Therefore, when the vehicle 100 has a frontal collision, the chain case 40 may be broken early, and the impact may not be transmitted to the dash panel 14 and the brake pedal 50 as expected. In this regard, in this embodiment, the chain case 40 has front ribs 46 and back ribs 47 . Therefore, in the event of a frontal collision of the vehicle 100, the impact can be transmitted to the dash panel 14 and the brake pedal 50 via the chain case 40 as expected.

(3) In the above-described embodiment, the front rib 46 and the back rib 47 are positioned in plane-symmetrical positions. Therefore, the projection length of each of the front rib 46 and the rear rib 47 from the case body 41 does not have to be increased. If the protruding lengths of the front rib 46 and the back rib 47 can be shortened, there is no need to perform sharp processing when forming the chain case 40, which contributes to simplification of the manufacturing process and improvement in yield. On the other hand, since the total projecting length of the front rib 46 and the back rib 47 can be increased, a high reinforcing effect can be obtained.

(4) In the present embodiment, the front rib 46 and the back rib 47 are positioned in the first region 40A of the chain case 40 facing the spacer 70 in the front-rear direction. As a result, the axial rigidity of the first region 40A of the chain case 40, which is located in front of the spacer 70 and is likely to come into contact with the spacer 70, can be improved. If the axial rigidity of the first region 40</b>A of the chain case 40 can be improved, the impact can be easily transmitted to the relatively upper position of the brake pedal 50 . As a result, the rotation of the arm 52 caused by the rearward movement of the arm 52 with respect to the bracket 51 can be more reliably suppressed.

(5) In the present embodiment, the axial rigidity of the first region 40A of the chain case 40 in the longitudinal direction is higher than the axial rigidity of the second region 40B of the chain case 40 in the longitudinal direction. As a result, for example, compared to the case where the longitudinal axial rigidity of the first region 40A of the chain case 40 is the same as that of the second region 40B, it is easier to transmit the impact to a relatively upper position of the brake pedal 50. . As a result, the rotation of the arm 52 caused by the rearward movement of the arm 52 with respect to the bracket 51 can be more reliably suppressed.

(6) In the present embodiment, the chain case 40 has a facing surface 41A that is a flat surface that faces the spacer 70 in the longitudinal direction. As a result, even if the positional relationship between chain case 40 and spacer 70 is slightly displaced during a frontal collision of vehicle 100 , the possibility that facing surface 41</b>A of chain case 40 contacts spacer 70 increases. If the spacer 70 is in contact with the flat facing surface 41A in this way, it is possible to prevent the impact force from the chain case 40 from being transmitted to the spacer 70 in an unintended direction.

(7) In this embodiment, the facing surface 41A of the chain case 40 is substantially parallel to the front surface 71 of the spacer 70. As shown in FIG. This increases the possibility of surface contact between the chain case 40 and the spacer 70 . As a result, the possibility of transmitting the energy from the chain case 40 to the spacer 70 as expected increases.

<Change example>
This embodiment can be implemented with the following modifications. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

- In the above embodiment, the shape of the case body 41 of the chain case 40 may be changed. For example, the facing surface 41A of the case body 41 does not have to be substantially parallel to the front surface 71 of the spacer 70 . Further, for example, the facing surface 41A of the case main body 41 may be a curved surface.

- In the above-described embodiment, the front rib 46 and the rear rib 47 of the chain case 40 do not have to extend in the front-rear direction. For example, the front rib 46 and the back rib 47 may be inclined with respect to the front and rear of the vehicle 100 . Even in this case, it can be said that the front rib 46 and the back rib 47 extend from the front side to the rear side of the vehicle 100 .

- In the above embodiment, the front rib 46 and the rear rib 47 of the chain case 40 do not have to extend linearly. All or part of the front rib 46 and the back rib 47 may be arc-shaped, or may be bent in the middle.

- In the above embodiment, the positions of the front rib 46 and the rear rib 47 in the chain case 40 may be changed. For example, the front rib 46 and the back rib 47 may be located in the second region 40B instead of or in addition to the first region 40A. Even in this configuration, the axial rigidity of the first region 40A of the chain case 40 in the longitudinal direction is preferably higher than the axial rigidity of the second region 40B of the chain case 40 in the longitudinal direction. .

- In the above embodiment, the number of front ribs 46 and back ribs 47 in the chain case 40 may be changed. As a specific example, the number of front ribs 46 may be one, or three or more. Similarly, the number of back ribs 47 may be one, or three or more.

- In the above embodiment, the front rib 46 and the back rib 47 of the chain case 40 may be omitted. Even with this configuration, there is no problem if the axial rigidity of the first region 40A of the chain case 40 in the longitudinal direction is higher than the axial rigidity of the second region 40B of the chain case 40 in the longitudinal direction. .

In the above embodiment, the axial rigidity of the first region 40A of the chain case 40 in the longitudinal direction may be lower than the axial rigidity of the second region 40B of the chain case 40 in the longitudinal direction. For example, if the longitudinal axial rigidity of the first region 40A of the chain case 40 is maintained at a certain value or more, the contact between the chain case 40 and the spacer 70 allows the spacer 70 to move rearward.

- In the above embodiment, the configuration of the internal combustion engine 20 may be changed. As a specific example, the chain case 40 may be fixed to the left wall of the engine body 30 . In this case, for example, the device body 61 and the spacer 70 of the booster 60 may be positioned between the engine body 30 and the dash panel 14 . Further, for example, the device main body 61 and the spacer 70 of the booster 60 may be positioned on the left side of the engine room X so as to be positioned between the chain case 40 and the dash panel 14 . That is, the present technology can also be applied to a configuration in which the brake pedal 50 is positioned on the left side of the vehicle compartment Y when viewed from the left-right center.

- In the above embodiment, the specific part of the booster 60 may be changed. For example, only part of the device main body 61 may be positioned between the chain case 40 and the dash panel 14 in the engine room X. In this case, part of the device main body 61 is the specific part.

- In the above embodiment, the shape of the spacer 70 may be changed. Specifically, the shape of the spacer 70 may be changed according to the shape of the chain case 40 and the device main body 61 of the booster 60 .

X... Engine room Y... Vehicle room 11... Front panel 12... Left side panel 13... Right side panel 14... Dash panel 20... Internal combustion engine 30... Engine body 31... Cylinder 40... Chain case 40A... First area 40B... Second area Area 41 Case body 41A Opposing surface 41Z Interior space 46 Front rib 47 Back rib 50 Brake pedal 51 Bracket 52 Arm 53 Pedal body 60 Booster 61 Device body 62 Rod 70 Spacer 71 front surface 80 steering wheel 100 vehicle

Claims (5)

A dash panel that partitions the engine room and the vehicle compartment,
an internal combustion engine located in the engine room;
a brake pedal rotatably supported with respect to the dash panel and located in the vehicle compartment;
a booster connected to the brake pedal and amplifying the force input from the brake pedal;
a vehicle comprising
The brake pedal
a bracket fixed to the dash panel;
an arm rotatably supported with respect to the bracket and extending downwardly from the bracket;
a pedal body fixed to the end of the arm opposite the bracket;
at least a portion of the booster is located between the internal combustion engine and the dash panel;
When a portion of the booster positioned between the internal combustion engine and the dash panel is defined as a specific portion, the specific portion is positioned in front of the arm,
The vehicle further includes a spacer located above the booster as viewed from the booster and between the internal combustion engine and the dash panel in the engine room. The internal combustion engine is
an engine body having a cylinder;
a chain case fixed to the engine body,
The chain case is positioned in front of the specific portion and the spacer,
The chain case is
a case body that partitions the internal space;
a front rib protruding from the surface of the case body and extending linearly from the front side to the rear side;
a rear rib protruding from the rear surface of the case body and extending linearly from the front side to the rear side,
The vehicle according to claim 1, wherein the front rib and the back rib are positioned in plane-symmetrical locations with respect to the case body. When a region of the chain case that faces the spacer in the front-rear direction is defined as a first region, and a region that faces the specific portion in the front-rear direction is defined as a second region,
The vehicle according to claim 2, wherein the front rib and the back rib are located in the first region. When a region of the chain case that faces the spacer in the front-rear direction is defined as a first region, and a region that faces the specific portion in the front-rear direction is defined as a second region,
4. The vehicle according to claim 2, wherein axial rigidity in the longitudinal direction in the first region is higher than axial rigidity in the longitudinal direction in the second region. The vehicle according to any one of claims 2 to 4, wherein the chain case has a flat surface facing the spacer in a longitudinal direction.

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