JP2008279969A - Canister mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a canister mounting structure in which a canister storage space is secured on the upper surface side of a floor panel without reducing a cabin space and a luggage space. <P>SOLUTION: This canister mounting structure comprises: a spare tire storage part 31 which is formed by extending the floor panel 30 downward installed the rear of a rear seat backrest between wheel aprons 20 formed on wheel houses in which the left and right rear wheels of a vehicle are stored and in which a spare tire T is stored; and a canister 110 formed on the upper surface side of the floor panel 30 at the rear of the rear seat backrest 50 and forward of the center of the spare tire T and so arranged as to be partly overlapped with the spare tire T in both the longitudinal and lateral directions of the vehicle at least in plan view. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a canister mounting structure provided in a vehicle such as an automobile.

A vehicle using volatile oil such as gasoline as a fuel is provided with a fuel evaporative emission prevention device for preventing the fuel evaporative gas generated in the fuel tank from being diffused into the atmosphere. The fuel evaporative emission prevention device temporarily adsorbs and stores the fuel evaporative gas on activated carbon in the canister, and introduces and processes the fuel evaporative gas into the combustion chamber when the engine is operating.
Conventionally, canisters were generally placed in the engine room, but it became difficult to secure space due to overcrowding in the engine room. In recent years, canisters are generally placed under the floor at the rear of the vehicle. is there.

In recent years, it has been required to further reduce the amount of fuel evaporative gas discharged outside the vehicle, and the capacity of the canister tends to increase. On the other hand, it is difficult to secure an installation space for a large capacity canister without eroding the space in the luggage compartment or the passenger compartment while the layout of the vehicle is becoming dense.
Conventionally, it is known that a canister is accommodated in a space formed below a spare tire pan bulging portion formed by projecting a floor panel at the rear of a vehicle upward to support a spare tire ( For example, see Patent Document 1).
In addition, there is known a canister disposed under the floor on the side of a spare tire pan (see, for example, Patent Document 2).
Japanese Utility Model Publication No. 7-24624 JP-A 63-145125

However, when the canister and its auxiliary equipment are enlarged, it is difficult to accommodate the canister inside the spare tire pan. In addition, since various components such as a fuel tank, a subframe, a differential carrier, a suspension, and an exhaust pipe are arranged below the floor of the vehicle, it is difficult to ensure sufficient space while avoiding interference with them. In particular, it was very difficult for small cars with short rear overhangs.
On the other hand, it is conceivable to place the canister on the vehicle interior side (above the floor panel), but if the canister is accommodated and the floor of the vehicle compartment or luggage space is raised, the vehicle compartment or luggage The space becomes narrow and the convenience of the vehicle is impaired.
In view of the above-described problems, an object of the present invention is to provide a canister mounting structure that secures a storage space for a canister on the upper surface side of a floor panel without narrowing a passenger compartment and a luggage space.

The present invention solves the above-described problems by the following means.
The invention of claim 1 is formed between a wheel apron provided in each of the wheel houses in which the left and right rear wheels of the vehicle are accommodated, and a floor panel on the rear side of the rear seat back is projected downward. A spare tire accommodating portion for accommodating a spare tire; provided on the upper surface side of the floor panel on the rear side of the rear seat back and on the front side of the center of the spare tire, and at least a part in a top view A canister mounting structure including a canister arranged to overlap with the spare tire in a vehicle longitudinal direction and a vehicle width direction.

According to a second aspect of the present invention, in the canister mounting structure according to the first aspect, at least a part of the canister auxiliary device arranged on the opposite side in the vehicle width direction with respect to the canister, the canister, and the canister auxiliary device A canister mounting structure comprising: pipes connected to each other and arranged on the front side of the spare tire.
According to a third aspect of the present invention, in the canister mounting structure according to the second aspect, the canister, the canister auxiliary device, and at least one of the pipes are provided between the spare tire and the spare tire is advanced. A canister mounting structure having a slope portion for moving a tire upward.

According to the present invention, the following effects can be obtained.
(1) Since the spare tire is round, if it is accommodated in a substantially rectangular luggage floor portion or the like, a dead space is formed at the corner of the floor. In this regard, in the case of the present invention, the canister is provided on the upper surface side of the floor panel on the rear side from the rear seat back and on the front side from the center of the spare tire, and at least a part of the canister is respectively in the front-rear direction and the vehicle width direction. By arranging it so as to overlap with the spare tire, it is possible to place a canister with a relatively large capacity by effectively using the dead space described above, and to secure a canister storage space without narrowing the passenger compartment or luggage space can do. In addition, in such an arrangement, the canister can be arranged in a portion where the vehicle body structure is strong for protection from the rear seat occupant and the fuel tank, preventing damage to the canister at the time of the rear collision. Leakage of fuel evaporative gas can be prevented.
(2) A canister having a larger capacity can be mounted by separating the canister and the canister auxiliary device from each other and arranging them separately on the left and right sides and connecting them with piping.
(3) By providing a slope portion that is provided between at least one of the canister, the canister auxiliary device, and the pipe and the spare tire, for example, to move the spare tire upward when the spare tire is caused by a rear collision or the like, It is possible to prevent the canister or the like from being damaged by jumping up the spare tire at the time of a rear collision to prevent a direct hit to the canister or the like. Further, by flipping up the spare tire in this way, the strength required for, for example, an impact absorbing structure that absorbs an impact received from the spare tire is reduced, and the vehicle can be reduced in weight. .

  The present invention provides a canister mounting structure in which a canister housing space is secured on the upper surface side of a floor panel without narrowing a passenger compartment and a luggage space. The drain valve / filter is divided into left and right, installed on the upper surface of the floor panel, connected to each other by piping, and a cover that covers these members is provided. It was solved by forming the slope part to be flipped up.

Hereinafter, embodiments of a canister mounting structure to which the present invention is applied will be described with reference to the drawings. In this embodiment, the vehicle to be applied is an automobile such as a passenger car, for example, and is a two-box type in which the cabin and the cargo room are not isolated.
FIG. 1 is a plan view of a rear part of a vehicle body having a canister mounting structure according to this embodiment.
2 is a cross-sectional view taken along the line II-II in FIG.

The vehicle includes a side frame 10, a wheel apron 20, a floor panel 30, a fuel tank 40, a rear seat 50, a fuel evaporative gas processing device 100, and the like.
The side frame 10 is a structural member of a vehicle body that extends in the front-rear direction of the vehicle, and has a substantially rectangular closed cross-section when cut in the vehicle width direction. A pair of side frames 10 are provided apart from each other in the vehicle width direction.
The wheel apron 20 is a part constituting an inner wall of a wheel house in which a rear wheel (not shown) of the vehicle is accommodated. The wheel apron 20 is joined to the outer sides in the vehicle width direction of the left and right side frames 10, respectively.

The floor panel 30 is a portion constituting the floor surface portion of the monocoque structure of the vehicle body, and is disposed between the left and right side frames 10.
A spare tire pan 31, a canister mounting portion 32, and an auxiliary device mounting portion 33 are integrally formed on the floor panel 30 by pressing.
The spare tire pan (spare tire accommodating portion) 31 is a portion formed by projecting the floor panel 30 downward in order to accommodate the spare tire T. The spare tire T is laid flat in the spare tire pan 31 with its central axis slightly tilted backward from the vertical.

2 and FIG. 4 to be described later, the spare tire T is of a normal size that is not an emergency tire. In the case of an emergency tire, the section width (the height in FIG. Direction dimension) becomes smaller.
The canister mounting portion 32 and the auxiliary device mounting portion 33 are portions where a later-described canister 110 and a drain valve / filter 120 of the fuel evaporative gas processing apparatus 100 are mounted.

The fuel tank 40 is a container for storing volatile liquid fuel such as gasoline, and is disposed below the floor panel 30 on the front side of the spare tire pan 31. The fuel tank 40 is fixed to a cross member provided on the lower surface of the floor panel 30 by, for example, a hold-down band.
The rear seat 50 has a seating surface disposed on the upper side of the fuel tank 40 in the vehicle interior, and a seatback extending upward from the rear end thereof.

Next, the fuel evaporative gas processing apparatus 100 will be described.
FIG. 3 is an external perspective view of the fuel evaporative gas processing apparatus.
4 is a cross-sectional view taken along the line IV-IV in FIG.
FIG. 5 is a schematic cross-sectional view taken along the line VV in FIG.
The fuel evaporative gas processing apparatus 100 processes the fuel evaporative gas generated in the fuel tank 40, and canister 110, drain valve / filter 120, vent tube 131, drain tube 132, purge tube 133, cover 140, etc. It is configured with.

The canister 110 is a container in which, for example, activated carbon that temporarily adsorbs fuel evaporative gas is contained in a resin container. The canister 110 is formed in a substantially rectangular box shape. Further, the casing of the canister 110 is formed with a concave portion in which a corner portion on the inner side in the vehicle width direction and on the rear side of the vehicle facing the outer peripheral surface of the spare tire T is formed, and this concave portion prevents interference with the spare tire T. It also functions as an escape section.
As shown in FIG. 1, the canister 110 is disposed on the right front side of the vehicle as viewed from the central axis of the spare tire T, and is mounted on the upper surface side of the canister mounting portion 32 of the floor panel 30. The front end portion of the canister 110 is disposed to face the back portion of the seat back of the rear seat 50. On the other hand, the rear end portion of the canister 110 is arranged on the vehicle rear side with respect to the front end portion of the spare tire T. Further, the outer portion of the canister 110 in the vehicle width direction is placed on the upper part of the right side frame 10 so as to face the right wheel apron 20. An end portion on the inner side in the vehicle width direction of the canister 110 is arranged on an inner side in the vehicle width direction than an end portion on the right side in the vehicle width direction of the spare tire T.
As a result of the above-described arrangement, the canister 110 is arranged so that a part thereof overlaps the spare tire T when viewed from the vehicle front side and the vehicle width direction.

The drain valve / filter 120 is a unit of a drain valve (control valve) that switches between communication and blocking between the canister 110 and external air, and a filter that filters air passing through the drain valve.
The drain valve / filter 120 is disposed on the left front side of the vehicle as viewed from the central axis of the spare tire T, and is mounted on the upper surface side of the auxiliary equipment mounting portion 33 of the floor panel 30. The front end portion of the drain valve / filter 120 is disposed to face the back portion of the seat back of the rear seat 50. On the other hand, the rear end portion of the drain valve / filter 120 is disposed on the vehicle rear side of the front end portion of the spare tire T. Further, the end of the drain valve / filter 120 on the outer side in the vehicle width direction is placed on the upper part of the left side frame 10 so as to face the left wheel apron 20. The end of the drain valve / filter 120 on the inner side in the vehicle width direction is disposed on the inner side in the vehicle width direction with respect to the end of the spare tire T on the left side in the vehicle width direction.
As a result of the arrangement described above, the drain valve / filter 120 is arranged so that a part thereof overlaps the spare tire T when viewed from the vehicle front side and the vehicle width direction.
The canister 110 and the drain valve / filter 120 are disposed on the upper part of the cross member for fixing the fuel tank 40 extending in the vehicle width direction along the lower surface of the floor panel 30.

The vent tube 131 is a conduit for introducing the air above the fuel tank 40 containing fuel evaporative gas into the canister 110.
The drain tube 132 is a conduit for introducing external air introduced through the drain valve into the canister 110.
The purge tube 133 introduces the fuel evaporative gas from the canister 110 into the intake manifold of the engine using an intake pipe negative pressure (not shown). The fuel evaporative gas introduced into the intake manifold is combusted in the combustion chamber of the engine.
The vent tube 131, the drain tube 132, and the purge tube 133 are disposed so as to extend in the vehicle width direction on the upper side of the floor panel 30 between the front end portion of the spare tire T and the rear seat 50. In addition, the vent tube 131, the drain tube 132, and the purge tube 133 are formed of a highly airtight nylon material in order to prevent the generation of odor in the passenger compartment.

The cover 140 covers and protects the canister 110, the drain valve / filter 120, and the piping between them. The cover 140 includes a canister cover 141, a drain valve / filter cover 142, and a piping cover 143. 1 and 3, the cover 140 is shown in a transparent state, and in these drawings, the cover 140 is indicated by a broken line.
The canister cover 141 and the drain valve / filter cover 142 cover the upper and front and rear portions of the canister 110 and the drain valve / filter 120, respectively. The canister cover 141 and the drain valve / filter cover 142 are fastened to the stay extending from the side frame 10 at the outer end in the vehicle width direction, and the inner end in the vehicle width direction is disposed along the lower surface of the floor panel 30. It is fastened to the cross member.
Further, the rear surface portions of the canister cover 141 and the drain valve / filter cover 142 are inclined with respect to the vehicle width direction so that the end portion on the inner side in the vehicle width direction is the front side of the vehicle rather than the end portion on the outer side in the vehicle width direction. So as to prevent interference with the spare tire T.

The upper surface of the canister cover 141 and the drain valve / filter cover 142 is formed in a flat shape, and the height thereof is substantially the same as the upper surface of the spare tire T when an emergency tire is used as the spare tire T. .
A luggage floor board B is provided on the canister cover 141, drain valve / filter cover 142, and spare tire T, as shown in FIG. The luggage floor board B is a flat plate member that functions as a floor surface of the luggage room, and is detachably mounted on the upper surfaces of the canister cover 141 and the drain valve / filter cover 142.

The piping cover 143 is a portion that covers the vent tube 131, the drain tube 132, and the purge tube 133 described above. As shown in FIG. 4, the pipe cover 143 is formed integrally with a front surface portion and a rear surface portion that protrude downward from the upper surface portion and front and rear end portions thereof. The piping cover 143 is fastened to the cross member below the floor panel 30 together with the canister cover 141 and the drain valve / filter cover 142 at the lower ends of the front and rear surfaces.
Further, the rear surface portion of the pipe cover 143 is a slope portion 143a having a lower end portion disposed on the vehicle rear side with respect to the upper end portion. A spare tire ring hose 34, which is a panel for stiffening the spare tire pan 31, is provided on the upper surface of the floor panel 30. The spare tire ring hose 34 is formed with a slope portion 34a having the same inclination as the slope portion 143a. The lower end portion of the slope portion 143a of the pipe cover 143 and the upper end portion of the slope portion 34a of the spare tire phosphorus hose 34 are disposed adjacent to each other.
The inclination of each of the slope portions 143a and 34a is appropriately set in consideration of, for example, when the spare tire T jumps upward when the spare tire T moves forward with respect to the vehicle body at the time of a frontal collision of the vehicle.

  The canister cover 141, the drain valve / filter cover 142, and the piping cover 143 described above are formed by, for example, sheet metal processing of a steel plate. The canister cover 141 and the drain valve / filter cover 142 are, for example, a user's hands on the luggage floor board. The pipe cover 143 is required to spring up the spare tire T at the time of a frontal collision of the vehicle, whereas the pipe cover 143 includes the canister cover 141 and the drain. It is formed of a material having a plate thickness larger than that of the valve / filter cover 142.

According to the embodiment described above, the following effects can be obtained.
(1) Since the spare tire T is round, when the spare tire T is accommodated in a substantially rectangular luggage floor portion, a dead space is formed at the corner of the floor panel 30. In this regard, in the present embodiment, the canister 110 is provided on the upper surface side of the floor panel 30 on the rear side of the rear seat 50 and in front of the center of the spare tire T. And by arranging so as to overlap with the spare tire T in the vehicle width direction, the canister 110 having a relatively large capacity can be arranged by effectively utilizing the dead space, without narrowing the passenger compartment or the luggage space. An accommodation space for the canister 110 can be secured. In addition, in such an arrangement, the canister 110 can be arranged in a portion where the vehicle body structure is strong to protect the rear seat occupant and the fuel tank 40 from a rear collision, and the canister 110 is damaged during the rear collision. This can prevent leakage of fuel evaporative gas.
(2) The canister 110 having a larger capacity can be mounted by separating the canister 110 and the drain valve / filter 120 from each other and arranging them separately from each other and connecting them with piping.
(3) A slope that is provided between the pipe between the canister 110 and the drain valve / filter 120 and the spare tire T, and moves the spare tire T upward when the spare tire T moves forward due to, for example, a rear collision. By providing the portion, it is possible to prevent the canister 110 or the like from being damaged by jumping up the spare tire T at the time of a rear collision and preventing the canister 110 or the like from being hit directly. Further, by flipping up the spare tire T in this way, for example, when the shock absorbing structure for absorbing the impact received from the spare tire T is provided on the pipe cover 143, the required strength is reduced, and the vehicle Weight reduction can be achieved.
(4) By providing the canister 110, the drain valve / filter 120, the cover 140 that covers the upper part of the pipe, and forming a part of the slope part integrally with the pipe cover 143 that constitutes a part of the cover 140, The above-described effect of jumping up the spare tire T can be obtained while suppressing an increase in the number of parts.
In addition, by providing the cover 140, for example, when the user touches the luggage floor board B, the canister 110 and the like can be protected from the load.
(5) By dividing the cover 140 into three parts in the vehicle width direction, the pipe cover 143 that requires strength in preparation for a collision with the spare tire T can be made thicker than the other parts, Securement and weight reduction of other parts can be achieved. Moreover, the workability | operativity in the assembly process of a vehicle can be improved compared with the case where it forms as an integral long thing.

(Modification)
The present invention is not limited to the embodiments described above, and various modifications and changes are possible, and these are also within the technical scope of the present invention.
(1) The configuration, shape, etc. of the canister body and auxiliary equipment, piping, and cover are not limited to the above-described embodiments, and can be changed as appropriate. For example, in the embodiment, the canister main body and the auxiliary devices are separated into the left and right as separate bodies. However, the present invention is not limited to this, and a unit type canister having a built-in auxiliary device in the case of the canister main body may be disposed on the left or right side. Good. Moreover, although the vehicle of an Example was a 2 box type, for example, this invention is applicable not only to this but a 3 box, 1 box type vehicle.
(2) Although the slope portion is provided in the pipe cover in the embodiment, the present invention is not limited to this, and the slope portion may be provided in the canister cover or the cover of the auxiliary device. In addition to the cover, a member for jumping up the spare tire may be provided to form a slope.

It is a top view in the vehicle body rear part of the vehicle which has the Example of the canister mounting structure to which this invention is applied. It is the II-II part arrow sectional drawing of FIG. It is an external appearance perspective view of the fuel evaporative gas processing apparatus in the canister mounting structure of FIG. FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3. FIG. 5 is a schematic cross-sectional view taken along line VV in FIG. 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Side frame 20 Wheel apron 30 Floor panel 31 Spare tire pan 32 Canister mounting part 33 Auxiliary equipment mounting part 34 Spare tire phosphorus hose 34a Slope part 40 Fuel tank 50 Rear seat 100 Fuel evaporative gas processing apparatus 110 Canister 120 Drain valve / filter 131 Vent tube 132 Drain tube 133 Purge tube 140 Cover 141 Canister cover 142 Drain valve / filter cover 143 Piping cover 143a Slope T Spare tire B Luggage floor board

Claims (3)

Spare that accommodates spare tires that are formed between the wheel aprons respectively provided in the wheel house in which the left and right rear wheels of the vehicle are accommodated and the floor panel on the rear side of the rear seat back is projected downward. A tire container;
Provided on the upper surface side of the floor panel on the rear side of the rear seat back and in front of the center of the spare tire, and at least a part of the spare tire in the vehicle front-rear direction and the vehicle width direction as viewed from above. A canister mounting structure comprising a canister arranged to overlap with a tire. The canister mounting structure according to claim 1,
A canister auxiliary device, at least a part of which is disposed on the opposite side in the vehicle width direction with respect to the canister;
A canister mounting structure comprising: a pipe connected to each of the canister and the canister auxiliary device and disposed on a front side of the spare tire. The canister mounting structure according to claim 2,
A canister mounting structure comprising: a slope portion provided between at least one of the canister, the canister auxiliary device, and the pipe and the spare tire, and moving the spare tire upward when the spare tire advances. .

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