JP6111902B2 - Mounting structure for vehicle canister - Google Patents

Description

  The present invention relates to a mounting structure for a vehicle canister, and more particularly to a mounting structure for a vehicle canister for adsorbing evaporated fuel.

  A vehicle such as an automobile is provided with a canister for adsorbing evaporated fuel leaking from the fuel tank to the atmosphere and preventing hydrocarbons (HC) contained in the fuel from being released to the atmosphere. This canister is attached to the side frame below the floor panel, for example.

  As a conventional mounting structure for this kind of vehicle canister, for example, the one described in Patent Document 1 is known. The mounting structure of the vehicle canister is such that a side frame mounting bracket that protrudes inward in the vehicle width direction is attached to a side frame that extends in the longitudinal direction of the vehicle, and the canister mounting bracket is attached to the side frame mounting bracket. ing.

  The canister mounting bracket includes a bottom plate portion extending horizontally inward in the vehicle width direction, a first standing portion standing on the side frame side from the bottom plate portion, and a horizontal direction from the upper end of the first standing portion. A side frame mounting portion that protrudes and is fixed to the side frame mounting bracket, a second standing portion that is erected on the front side of the vehicle from the bottom plate portion behind the side frame, and from the vicinity of the upper end of the second standing portion The canister is mounted on a bottom plate portion of the canister mounting bracket. The crossmember mounting portion projects in the horizontal direction. In this vehicle canister mounting structure, since the canister is mounted to the side frame via the canister mounting bracket, the canister can be protected from stones and the like repelled from the tire by the canister mounting bracket.

JP 2002-48012 A

  However, in such a conventional vehicle canister mounting structure, the canister is attached to the bottom plate portion extending in the horizontal direction, and the bottom plate portion is erected from the bottom plate portion. Therefore, the canister, which is a heavy object, is attached to the canister mounting bracket at a position away from the side frame. For this reason, the canister may vibrate due to traveling wind or the like.

Further, since the space in the height direction between the canister and the floor panel is narrowed, the visibility of the canister is lowered, and it is necessary to attach and detach the canister in a narrow space. Therefore, the workability of canister attachment / detachment and maintenance work may be reduced.
Furthermore, since the canister mounting bracket has a second upright portion standing on the front side of the vehicle from the bottom plate portion behind the side frame, the front of the canister is covered with the second upright portion, and the first The cross member crosses in front of the two standing portions.

  For this reason, it becomes difficult to blow the traveling wind from the front of the vehicle onto the canister, and the cooling performance of the canister is deteriorated. If the cooling performance of the canister deteriorates, it becomes difficult for the temperature of the canister to decrease due to radiant heat from the ground, etc., so that the canister is likely to undergo creep deformation due to radiant heat, etc. May occur.

  The present invention has been made paying attention to the above-mentioned problems, and in addition to improving the canister cooling performance and the workability of the canister attaching / detaching work and maintenance work, suppressing the vibration of the canister. It is an object of the present invention to provide a mounting structure for a vehicle canister.

  According to a first aspect of the present invention, a pair of side frames provided in a lower portion of a vehicle floor panel and extending in the front-rear direction of the vehicle and a radiator provided between the side frames are paired at the rear of the vehicle. And a pair of downward projecting portions extending downward from the side frame and coupled to the pair of downward projecting portions so as to extend in a vehicle width direction orthogonal to the front-rear direction of the vehicle. An engine mount member is formed at one end in the width direction of the engine mount member so as to protrude upward from the engine mount member, and is attached to a vehicle having an engine support portion for supporting the engine, and is generated in a fuel tank. A vehicle canister mounting structure for adsorbing evaporated fuel, wherein the side frame is higher on the rear side of the vehicle than on the front side of the vehicle. A second step in which a first protrusion provided on the canister is attached to an inner wall surface of the other lower protrusion opposite to the one lower protrusion. The canister is located on the rear side of the vehicle with respect to the engine support portion, and in the front-rear direction of the vehicle with respect to the space surrounded by the downward projecting portion, the engine support portion, and the upper surface of the engine mount member. It is comprised from what is attached to a downward protrusion part via a 2nd attachment part so that it may overlap.

As a second aspect of the present invention, the second attachment portion is inclined so that the base portion attached to the inner wall surface of the protrusion and the base portion protrude from both sides in the width direction, and the front ends of the protrusion portions approach each other. The first mounting portion is formed on the outer peripheral portion of the canister body case, and includes a fitting portion that fits into the protruding claw portion so as to be sandwiched between the protruding claw portions. The base portion projects downward so that the front end portion of the base portion located on the front side of the vehicle is located inward in the vehicle width direction with respect to the rear end portion of the base portion located on the rear side of the vehicle. The canister mounted on the second mounting portion is inclined and the clearance between the front side of the canister and the rear surface side of the engine support portion is gradually increased from the outside in the vehicle width direction to the inside in the vehicle width direction. The end of the canister in the vehicle width direction is It may be inclined positioned on the rear side of the vehicle than the end of the outward.

  As a third aspect of the present invention, the engine has an exhaust manifold on the other end side in the vehicle width direction, and the canister is attached to the downward projecting portion of the side frame provided on the one end side in the vehicle width direction of the engine. You may be made to do.

  As described above, according to the first aspect described above, the side frame provided at the lower portion of the vehicle floor panel has the stepped portion so that the rear side of the vehicle is higher than the height of the front side of the vehicle. Since the first mounting portion of the canister is attached to the second mounting portion provided in the downward projecting portion projecting downward from the stepped portion, the distance between the floor panel and the second mounting portion can be increased. .

  In addition, since the canister is attached to the downward projecting portion so as to be located behind the engine support portion, a wider space can be secured on the rear side than the engine support portion. For this reason, when the worker looks at the canister from the rear of the vehicle, the visibility of the canister can be improved and a wide working space can be secured for the worker. Therefore, the workability of the canister attachment / detachment work and the workability of the maintenance work can be improved.

  In particular, since the distance between the floor panel and the second mounting portion can be increased and a wide space can be secured on the rear side of the engine support portion, the first mounting portion of the canister can be used as the second mounting portion. Even if it is a case where it attaches with respect to upper direction, workability | operativity of the attachment or detachment work of a canister can be improved.

  In addition, the canister is attached to a highly rigid downward projecting portion that protrudes downward from the step portion of the side frame and to which an engine mount member that supports the heavy engine is attached. It is possible to suppress the canister from vibrating due to traveling wind or the like.

  In addition, since the canister is attached to the inner wall surface of the other lower projecting portion opposite to the one lower projecting portion, the canister is positioned inward in the vehicle width direction with respect to the side frame, and the side frame is moved outward in the vehicle width direction. On the other hand, the canister can be covered by the downward protrusion. For this reason, stones and the like repelled from the tire can be blocked by the downward projecting portion, and the canister can be protected by the downward projecting portion without providing a conventional protector.

Further, the canister is arranged on the rear side of the vehicle with respect to the engine support portion and in a vehicle front-rear direction with respect to a space surrounded by the downward projecting portion, the engine support portion, and the upper surface of the engine mount member. 2 is attached to the downward projecting portion through the attachment portion, so that the traveling wind flowing from the front of the vehicle passes through the clearance between the radiator and the side frame and passes from the clearance between the downward projecting portion and the engine support portion to the canister. Can be sprayed. For this reason, the low temperature running wind which does not pass a radiator can be actively sprayed on a canister.
Therefore, the cooling performance of the canister can be enhanced, and the canister can be prevented from creeping deformation due to radiant heat from the ground. For this reason, for example, the main body case of a canister can be comprised from a resin material, and a canister can be shape | molded easily.

  According to said 2nd aspect, the front-end part of the base part of the 2nd attachment part located in the front side of a vehicle is a vehicle width direction inside with respect to the rear-end part of the base part located in the back side of a vehicle. Since the base part is attached to the downward projecting part so as to be located on the side, when the operator looks at the second attachment part from the rear of the vehicle, the position of the projecting claw part provided on the base part or The visibility of the shape, the space between the base portion and the protruding claw portion, and the positional relationship between the fitting portion of the canister and the protruding claw portion can be enhanced.

Therefore, when the worker attaches the canister to the second attachment portion from the rear of the vehicle, the space between the base portion of the second attachment portion and the protruding claw portion and the shape of the protruding claw portion must be surely visually confirmed. The fitting portion of the canister can be easily inserted into the protruding claw portion of the base portion.
As a result, it is possible to improve the visibility of the canister during the canister attachment / detachment work, and to effectively improve the workability of the canister attachment / detachment work and the maintenance work.

  Further, since the front end portion of the base portion located on the front side of the vehicle is positioned inward in the vehicle width direction with respect to the rear end portion of the base portion located on the rear side of the vehicle, the downward projecting portion from the front of the vehicle The running wind that has flowed and mixed in the gap between the engine support portion and the engine support portion can smoothly flow along the front side of the canister to the engine support portion.

In addition, the canister attached to the second attachment portion gradually expands the gap between the front side of the canister and the rear side of the engine support portion from the outside in the vehicle width direction to the inside in the vehicle width direction. Further, the end of the canister on the inner side in the vehicle width direction is inclined to be located on the rear side of the vehicle with respect to the end on the outer side in the vehicle width direction, so that the traveling wind that flows to the engine support part along the front side of the canister The flow can smoothly flow to the rear side of the vehicle via a gap between the front side of the canister and the rear side of the engine support portion.

  As a result, the traveling wind flowing into the canister from the front of the vehicle can flow to the engine support along the front side of the canister without staying on the front side of the canister, thereby effectively improving the cooling performance of the canister. Can do.

  Further, by tilting the canister in the front-rear direction of the vehicle, it is possible to prevent the traveling wind from strongly colliding with the front portion of the canister, and it is possible to prevent the canister from vibrating due to the traveling wind. As a result, the canister can be stably attached to the downward projecting portion.

  According to said 3rd aspect, an engine has an exhaust manifold in the vehicle width direction other end part side, and a canister is attached to the downward protrusion part of the side frame provided in the vehicle width direction one end part side of the engine. Therefore, it is possible to prevent the temperature of the canister from rising due to the high-temperature exhaust gas flowing through the exhaust manifold, and to reliably blow the cold traveling wind onto the canister, thereby effectively improving the cooling performance of the canister. .

FIG. 1 is a view showing an embodiment of a vehicle canister mounting structure according to the present invention, and is a schematic top view of a vehicle to which a canister is mounted. FIG. 2 is a view showing an embodiment of a mounting structure for a vehicle canister according to the present invention, and is a schematic side view of the vehicle to which the canister is attached. FIG. 3 is a view showing an embodiment of a vehicle canister mounting structure according to the present invention, and is a view of the canister as viewed from the front side of the vehicle. FIG. 4 is a view showing an embodiment of a mounting structure for a vehicle canister according to the present invention, and shows the periphery of the canister as viewed from the front of the vehicle. FIG. 5 is a view showing an embodiment of a mounting structure for a vehicle canister according to the present invention, and is a view of the periphery of the canister as viewed from above the vehicle. FIG. 6 is a view showing an embodiment of a mounting structure for a vehicle canister according to the present invention, and is a perspective view of the canister and a member to be mounted. FIG. 7 is a view showing an embodiment of a mounting structure for a vehicle canister according to the present invention, and is an exploded view of the mounting of the canister as viewed from the rear of the vehicle. FIG. 8 is a view showing an embodiment of a mounting structure for a vehicle canister according to the present invention, and is a view showing a configuration around a mounted member and a state where the canister is attached / detached as viewed from the rear of the vehicle. FIG. 9 is a view showing an embodiment of a mounting structure for a vehicle canister according to the present invention, and is a view showing a top view of the canister and a flow of traveling wind.

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a vehicle canister mounting structure according to the present invention will be described with reference to the drawings.
FIGS. 1-9 is a figure which shows the attachment structure of the canister for vehicles of one Embodiment which concerns on this invention.
First, the configuration will be described.
1 and 2, a vehicle 1 includes a vehicle body 2 indicated by an imaginary line, and a pair of side frames 4 and 5 that are chassis are provided at a lower portion of a floor panel 3 that is a bottom portion of the vehicle body 2. . Further, front wheels 6L and 6R and rear wheels 7L and 7R are provided outward in the width direction of the vehicle 1 perpendicular to the longitudinal direction of the vehicle 1 with respect to the side frames 4 and 5. Hereinafter, the width direction of the vehicle 1 is simply referred to as a vehicle width direction.

The side frames 4 and 5 are parallel and have the same height and extend in the front-rear direction of the vehicle 1, and are connected by a cross member 8 at an arbitrary position in the extending direction.
A fuel tank 9 is attached to the cross member 8 between the side frames 4 and 5 at the rear of the vehicle 1, and the fuel tank 9 is filled with fuel (not shown). Further, a radiator 10 is provided between the side frames 4 and 5 on the front side of the vehicle, and a gap is formed between the both ends in the width direction of the radiator 10 and the side frames 4 and 5. In this manner, it is attached to the side frame 5 via the bracket 11.

As shown in FIGS. 2 to 4, the side frames 4, 5 are stepped portions 4 </ b> A, 5 </ b> A at the center in the extending direction so that the rear side of the vehicle 1 is higher than the height of the front side of the vehicle 1. The step portions 4 </ b> A and 5 </ b> A are formed behind the vehicle 1 with respect to the radiator 10.
Rectangular lower protrusions 12 and 13 are attached to the stepped portions 4A and 5A so as to be located behind the vehicle 1 with respect to the radiator 10, and the lower protruding portions 12 and 13 are connected to the stepped portions 4A and 5A. It protrudes downward.

As shown in FIG. 4, both end portions of the engine mount member 14 are attached to the lower end portions of the downward projecting portions 12 and 13, and a support bracket as an engine support portion is attached to one end portion in the width direction of the engine mount member 14. 15 is provided. The support bracket 15 protrudes upward from the engine mount member 14, and the engine 18 is attached to the support bracket 15 via a mount member 16 that is elastically deformable. The engine 18 is attached to the other end in the width direction of the engine mount member 14 via the mount member 17.
That is, the engine 18 according to the present embodiment is attached to the engine mount member 14 via the mount members 16 and 17, and vibrations are prevented from being transmitted from the engine 18 to the engine mount member 14 by the mount members 16 and 17. can do.

As shown in FIG. 1, the engine 18 is composed of a gasoline engine, a diesel engine, or the like, and a transmission 19 indicated by an imaginary line is attached to the rear of the vehicle 1. As shown in FIG. 4, an intake manifold 20B is connected to one end of the engine 18 in the vehicle width direction via an intake pipe 20A. The intake air is connected to the engine 18 via the intake pipe 20A and the intake manifold 20B. Has been introduced.
Further, an exhaust manifold 20C is provided at the other end in the vehicle width direction of the engine 18, and the exhaust gas burned by the engine 18 is discharged from the exhaust manifold 20C to the atmosphere through an exhaust pipe (not shown). It has become.

As shown in FIGS. 1 to 5, a canister 21 is attached to the other downward projecting portion 13 opposite to the one downward projecting portion 12. The canister 21 has a function of adsorbing the evaporated fuel generated in the fuel tank 9 and preventing it from being released into the atmosphere. The canister 21 has a function for adsorbing the evaporated fuel inside the main body case 21A of the canister 21. An adsorbent such as activated carbon is built in.
One end of a vapor pipe 23 </ b> A is connected to the canister 21, and the other end of the vapor pipe 23 </ b> A is connected to the fuel tank 9. The vapor pipe 23A introduces vapor, which is fuel evaporated in the fuel tank 9, into the canister 21, and the vapor introduced into the canister 21 through the vapor pipe 23A is adsorbed by the adsorbent.

One end of an atmospheric pipe 23B is connected to the main body case 21A of the canister 21, the other end of the atmospheric pipe 23B is opened to the atmosphere, and the atmosphere is introduced into the main body case 21A through the atmospheric pipe 23B. It has become.
Further, one end of a purge pipe 23C is connected to the main body case 21A, and the other end of the purge pipe 23C is connected to an intake pipe 20A of the engine 18. The purge pipe 23C is provided with a purge valve (not shown). When the purge valve is opened, the so-called mixed gas of the atmosphere and vapor introduced into the canister 21 from the atmospheric pipe 23B by the negative suction pressure of the intake pipe 20A, so-called The purge gas is introduced into the intake pipe 20A.

As shown in FIGS. 4 and 5, the downward projecting portion 13 is provided with a mounted member 25 as a second mounting portion, and this mounted member 25 is the other facing the one downward projecting portion 12. As shown in FIG. 6, the mounted member 25 is attached to the inner wall surface 13 </ b> A of the lower protruding portion 13, and the base portion 26 attached to the inner wall surface 13 </ b> A of the lower protruding portion 13 and the width direction of the base portion 26. Projecting claw portions 26a and 26b that project from both sides (the front-rear direction of the vehicle 1) and incline so that the leading ends of the projecting directions come closer to each other are provided.

The attached member 25 is formed at a lower portion of the base portion 26 and protrudes from a lower portion of the base portion 26, and a stopper claw 26 d that is formed at an upper portion of the base portion 26 and protrudes from the upper portion of the base portion 26. And are formed.
As shown in FIG. 5, the mounted member 25 has a front end portion 26 e of the base portion 26 positioned on the front side of the vehicle 1 with a width relative to a rear end portion 26 f of the base portion 26 positioned on the rear side of the vehicle 1. The base portion 26 is attached to the downward projecting portion 13 so as to be located inward in the direction. That is, in the base portion 26, the axis A in the width direction is inclined by the inclination angle θ 1 with respect to the longitudinal axis A of the vehicle 1, that is, the inner wall surface 13 A of the downward projecting portion 13.

  As shown in FIG. 6, the main body case 21A of the canister 21 is provided with fitting projections 21a and 21b as first fitting portions and fitting portions that are spaced apart in the vertical direction. 21 b is fitted into the protruding claw portions 26 a and 26 b so as to be sandwiched between the protruding claw portions 26 a and 26 b of the base portion 26. Further, when the fitting protrusions 21a and 21b are fitted to the protruding claws 26a and 26b, the upper surface of the fitting protrusion 21a and the lower surface of the fitting protrusion 21b come into contact with the stopper claws 26c and 26d, respectively. 21 is firmly attached to the member 25 to be attached.

The fitting protrusions 21a and 21b are formed on both the longitudinal surface of the main body case 21A and the short surface of the main body case 21A. The main body case 21A has a long surface and a short surface. Any surface of the surface can be attached to the attached member 25.
As a result, as shown in FIG. 5, the main body case 21 </ b> A of the canister 21 has a downward projecting portion 13 with the axis D inclined at an inclination angle θ <b> 2 with respect to the axis C in the vehicle width direction orthogonal to the longitudinal direction of the vehicle 1. Mounted on. In addition, the canister 21 of this embodiment has shown the example attached to the downward protrusion part 13 so that a longitudinal direction may face the front of the vehicle 1 with respect to the transversal direction of main body case 21A.

  Further, as shown in FIG. 4, the engine 18 of the present embodiment is provided with an exhaust manifold 20 </ b> C on the other end side in the vehicle width direction, and the canister 21 is provided on one end side in the vehicle width direction of the engine 18. It is attached to the downward projecting portion 13 of the side frame 5. That is, the attached member 25 is provided on the downward projecting portion 13 in the opposite direction to the exhaust manifold 20C.

  5 and 7, the mounted member 25 is disposed on the rear side of the vehicle 1 with respect to the support bracket 15, and the canister 21 includes the downward projecting portion 13, the support bracket 15, and the engine mount. The member 14 is attached to the downward projecting portion 13 via the attached member 25 so as to overlap the space 27 surrounded by the upper surface 14 a of the member 14 in the front-rear direction of the vehicle 1.

Next, the operation will be described.
When the worker attaches the canister 21 to the downward projecting portion 13, as shown in FIG. 7, the canister 21 is moved from the rear side of the vehicle 1 upward in the vertical direction of the attached member 25. Next, as shown in FIG. 8, the main body case 21A is moved downward from above in the vertical direction, and the fitting protrusions 21a and 21b of the main body case 21A are fitted to the protruding claws 26a and 26b, thereby attaching the member to be attached. The canister 21 is attached to the downward projecting portion 13 through 25.
Further, when the operator removes the canister 21 from the attached member 25, the main body case 21A is moved upward and the fitting protrusions 21a and 21b of the main body case 21A are extracted from the projecting claw portions 26a and 26b. The fitting between the case 21A and the mounted member 25 is released.

As described above, the canister 21 according to the present embodiment is easily attached to and detached from the attached member 25 by moving the main body case 21 </ b> A in the vertical direction with respect to the attached member 25.
That is, the mounting structure of the canister 21 according to the present embodiment is such that the side frames 4 and 5 provided at the lower part of the floor panel 3 are stepped so that the rear side of the vehicle 1 is higher than the height of the front side of the vehicle 1. Since the canister 21 is attached to the mounted member 25 provided on one of the lower protruding portions 13 having the portions 4A and 5A and protruding downward from the stepped portions 4A and 5A, the floor panel 3 and the mounted member 25 are connected. The distance can be increased.

  In addition, since the canister 21 is attached to the downward projecting portion 13 so as to be positioned behind the support bracket 15, a wider space can be secured on the rear side than the support bracket 15. For this reason, when the worker looks at the canister 21 from the rear of the vehicle 1, the visibility of the canister 21 can be improved, and a wide working space can be secured for the worker. Therefore, the workability of the attachment / detachment work of the canister 21 and the workability of the maintenance work can be improved.

  In particular, the canister 21 of the present embodiment can increase the distance between the floor panel 3 and the mounted member 25 and can secure a wider space on the rear side than the support bracket 15. Even when attaching to the attachment member 25 from above, the workability of the canister 21 attachment / detachment work can be improved.

  Further, the canister 21 protrudes downward from the step portion 5A of the side frame 5 and is attached to the highly rigid downward protrusion 13 to which the engine mount member 14 that supports the heavy engine 18 is attached. Can be stabilized, and the canister 21 can be prevented from vibrating due to traveling wind or the like.

  Further, since the canister 21 is attached to the inner wall surface 13A of the other lower protruding portion 13 facing the one lower protruding portion 12, the canister 21 is positioned inward in the vehicle width direction with respect to the side frame 5, and the side frame 5 The canister 21 can be covered by the downward projecting portion 13 with respect to the outside in the width direction. For this reason, stones and the like repelled from the front wheel 6R can be blocked by the downward projecting portion 13, and the canister 21 can be protected by the downward projecting portion 13 without providing a conventional protector.

The canister 21 is located on the rear side of the vehicle 1 with respect to the support bracket 15 and in the front-rear direction of the vehicle 1 with respect to a space surrounded by the downward projecting portion 13, the support bracket 15, and the upper surface 14 a of the engine mount member 14. It attaches to the downward protrusion part 13 via the to-be-attached member 25 so that it may overlap.
For this reason, as shown in FIG. 9, the traveling wind W flowing from the front of the vehicle 1 passes through the gap between the radiator 10 and the side frame 5 and enters the canister 21 from the gap between the downward projecting portion 13 and the support bracket 15. Can be sprayed. For this reason, the low-temperature traveling wind W that does not pass through the radiator 10 can be actively blown onto the canister 21.

  Therefore, the cooling performance of the canister 21 can be enhanced, and the canister 21 can be prevented from creeping due to radiant heat from the ground. For this reason, for example, the main body case 21A of the canister 21 can be made of a resin material, and the canister 21 can be easily molded. In addition, the canister 21 of this embodiment is not limited to resin or metal. In addition, since the to-be-attached member 25 can be easily shape | molded in arbitrary shapes if the to-be-attached member 25 is comprised from resin, as mentioned above, the to-be-attached member 25 is made with respect to the inner wall surface 13A of the downward protrusion part 13. FIG. Can be easily inclined.

  Further, in the mounting structure of the canister 21 according to the present embodiment, the mounted member 25 protrudes from both the width direction of the base portion 26 and the base portion 26 attached to the inner wall surface 13A of the downward protruding portion 13, and the protruding direction of each other It includes projecting claw portions 26a and 26b that are inclined so that the tip portion approaches. In addition, a fitting portion that fits into the protruding claw portions 26a and 26b is formed on the outer peripheral portion of the main body case 21A so as to be sandwiched between the protruding claw portions 26a and 26b.

  For this reason, when the worker looks at the mounted member 25 from the rear of the vehicle 1, the position and shape of the protruding claw portions 26 a and 26 b provided on the base portion 26, and the relationship between the base portion 26 and the protruding claw portions 26 a and 26 b. The visibility of the positional relationship between the space and the fitting projections 21a and 21b of the main body case 21A and the protruding claw portions 26a and 26b can be enhanced.

Therefore, when the worker attaches the canister 21 to the mounted member 25 from the rear of the vehicle 1, the space between the base portion 26 of the mounted member 25 and the protruding claw portions 26a and 26b, and the protruding claw portions 26a and 26b. The shape can be reliably recognized, and the fitting protrusions 21a and 21b of the main body case 21A can be easily inserted into the protruding claw portions 26a and 26b of the base portion 26.
As a result, the visibility of the canister 21 when the canister 21 is attached can be improved, and the workability of the attachment / detachment work of the canister 21 and the workability of the maintenance work can be effectively improved.

  Further, since the front end portion 26e of the base portion 26 positioned on the front side of the vehicle 1 is positioned inward in the vehicle width direction with respect to the rear end portion 26f of the base portion 26 positioned on the rear side of the vehicle 1, As shown in FIG. 9, the support bracket 15 extends along the front face 21 c of the body case 21 </ b> A corresponding to the front face of the canister 21, with the traveling wind W flowing through the gap between the lower protrusion 13 and the support bracket 15 from the front of the vehicle 1. Can flow smoothly.

  In addition, as shown in FIG. 9, the canister 21 attached to the attached member 25 has a gap between the front surface 21c of the main body case 21A and the rear surface 15a of the support bracket 15 from the outside in the vehicle width direction. Since the end of the canister 21 on the inner side in the vehicle width direction is inclined toward the rear side of the vehicle 1 with respect to the outer end of the vehicle width direction so as to gradually expand toward the inner side in the direction, the front surface 21c of the main body case 21A The flow of the traveling wind flowing through the support bracket 15 along the rear side of the vehicle case 1 can smoothly flow to the rear side of the vehicle 1 through the gap between the front surface 21c of the main body case 21A and the rear surface 15a of the support bracket 15.

As a result, the traveling wind flowing into the canister 21 from the front of the vehicle 1 can flow to the support bracket 15 along the front surface 21c of the main body case 21A without staying in front of the canister 21, and the cooling performance of the canister 21 Can be improved effectively.
Further, by tilting the canister 21 in the longitudinal direction of the vehicle, it is possible to prevent the traveling wind from strongly colliding with the front surface portion of the canister 21 and to prevent the canister 21 from vibrating due to the traveling wind W. The canister 21 can be stably attached to the downward projecting portion 13.

  Further, the engine 18 of the present embodiment has an exhaust manifold 20C on the other end portion side in the vehicle width direction, and the canister 21 is a downward projecting portion of the side frame 5 provided on one end side in the vehicle width direction of the engine 18. 13, the temperature of the canister 21 can be prevented from rising due to the high-temperature exhaust gas flowing through the exhaust manifold 20 </ b> C, and the cool traveling wind W can be reliably blown to the canister 21, thereby improving the cooling performance of the canister 21. It can be improved effectively.

Moreover, since the mounting structure of the canister 21 of this embodiment can improve the cooling performance of the canister 21, the concentration of the vapor introduced into the main body case 21A cooled by the traveling wind W can be increased.
That is, the vapor cooled by the traveling wind is compressed as compared with the vapor expanded in a high temperature state, so that the concentration of the vapor can be increased. For this reason, it is possible to collect a larger amount of vapor than by collecting the expanded adsorbent by collecting the high-concentration vapor in the adsorbent of the canister 21. For this reason, it is possible to prevent the adsorbent from increasing in size, and consequently to prevent the canister 21 from increasing in size, thereby reducing the manufacturing cost of the canister 21 and installing the canister 21. Can be reduced.

  The second mounting portion of the present embodiment is composed of a base member 26 and a mounted member 25 having projecting claw portions 26a and 26b formed on the base portion 26, and the first mounting portion is a canister. The main body case 21A is composed of fitting protrusions 21a and 21b that are fitted to the protruding claws 26a and 26b, and the canister 21 is moved in the vertical direction with respect to the member 25 to be attached. However, the configurations of the first mounting portion and the second mounting portion are not limited to those described above.

Also, the mounting method is not limited to moving the canister 21 in the vertical direction with respect to the mounted member 25. The canister 21 is attached to and detached from the mounted member 25 from the horizontal direction or the oblique direction. Also good.
While embodiments of the invention have been disclosed, it will be apparent to those skilled in the art that changes may be made without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims.

DESCRIPTION OF SYMBOLS 1 ... Vehicle, 3 ... Floor panel, 4, 5 ... Side frame, 4A, 5A ... Step part, 10 ... Radiator, 12, 13 ... Downward projecting part, 13A ... Inner wall surface, 14 ... Engine mount member, 14a ... Engine mount Upper surface of member, 15 ... support bracket (engine support portion), 18 ... engine, 20 ... exhaust manifold, 21 ... canister, 21A ... main body case, 21a, 21b ... fitting protrusion (fitting portion, first mounting portion) 21c ... front face of canister, 25 ... member to be attached (second attachment part) 26 ... base part, 26a, 26b ... projecting claw part, 26e ... front end part of base part, 26f ... rear end part (back of base part) End), 27 ... space (a space surrounded by the downward projecting portion 13, the support bracket 15, and the upper surface 14a of the engine mount member 14).

Claims (3)

A pair of side frames provided in a lower portion of a floor panel of the vehicle and extending in the front-rear direction of the vehicle;
A pair of downward projecting portions provided on the pair of side frames behind the vehicle with respect to a radiator provided between the side frames and extending downward from the side frames;
An engine mount member coupled to the pair of downward projecting portions so as to extend in a vehicle width direction perpendicular to the longitudinal direction of the vehicle;
The engine mount member is formed at one end in the width direction so as to protrude upward from the engine mount member, and is attached to a vehicle having an engine support portion for supporting the engine, and adsorbs evaporated fuel generated in the fuel tank. A vehicle canister mounting structure comprising:
The side frame has a step portion so that the rear side of the vehicle is higher than the height of the front side of the vehicle, and the downward projecting portion is attached to the step portion,
A second attachment portion to which a first attachment portion provided on the canister is attached is provided on an inner wall surface of the other lower protrusion portion facing one of the lower protrusion portions;
The canister is located on the rear side of the vehicle with respect to the engine support portion and in a front-rear direction of the vehicle with respect to a space surrounded by the downward projecting portion, the engine support portion, and the upper surface of the engine mount member. A mounting structure for a vehicle canister, wherein the mounting structure is attached to the downward projecting portion via the second mounting portion so as to overlap. A base part attached to the inner wall surface of the downward projecting part; and a projecting claw part projecting from both sides in the width direction of the base part and inclined so that the front end parts in the projecting direction approach each other. The first mounting portion is formed on the outer peripheral portion of the main body case of the canister and includes a fitting portion that fits into the protruding claw portion so as to be sandwiched between the protruding claw portions. And
The base portion is positioned so that a front end portion of the base portion located on the front side of the vehicle is located inward in the vehicle width direction with respect to a rear end portion of the base portion located on the rear side of the vehicle. Attached to the downward projecting portion at an angle,
The canister attached to the second attachment portion is such that a gap between the front side of the canister and the rear side of the engine support portion gradually increases from the outside in the vehicle width direction to the inside in the vehicle width direction. 2. The vehicle canister mounting structure according to claim 1, wherein an end portion of the canister in the vehicle width direction on the inner side in the vehicle width direction is inclined to be positioned on a rear side of the vehicle with respect to an outer end portion in the vehicle width direction. The engine has an exhaust manifold on the other end in the vehicle width direction;
3. The vehicle canister mounting structure according to claim 1, wherein the canister is attached to the downward projecting portion of the side frame provided on one end side in the vehicle width direction of the engine.

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