JP2013212719A - Arrangement structure of canister - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an arrangement structure of a canister that can efficiently arrange a canister even if an arrangement space under a floor panel is narrow.SOLUTION: An arrangement structure of a canister 2 includes a subframe 16 formed by connecting, in almost curb shape, front and rear cross member portions 16a, 16b extended in a vehicle width direction and a pair of right and left side member portions 16c, 16d disposed on the right and left ends of the front and rear cross member portions 16a, 16b in a front and rear direction. An adverse recessed space 11a is formed under a floor panel 11 and between the floor panel 11 and at least a part of a fuel tank T and the canister 2, in the vehicle width direction. An inclined surface Tb inclined in a vehicle rear direction is formed on an upper surface Ta of the fuel tank T. A front portion 2a of the canister 2 is disposed along the inclined surface Tb, and the rear portion 2b is disposed so as to be accommodated between the front and rear cross member portions 16a, 16b.

Description

  The present invention relates to an arrangement structure of canisters arranged below a floor panel of a vehicle.

  Conventionally, for example, a canister arrangement structure for a vehicle disclosed in Patent Document 1 is known as a canister that adsorbs fuel evaporated in a fuel tank below a floor panel.

  The canister arrangement structure described in Patent Document 1 includes a second sub-frame (rear frame) installed on a pair of rear side members arranged on both sides in the vehicle width direction of the rear portion of the vehicle body below the floor panel, and the second sub-frame. A canister is interposed between the fuel tank disposed in front of the subframe. The canister is arranged above the sub-frame (front frame), the upper part of the canister is attached to the cross member, and the canister is arranged so that the front side of the canister falls within the height of the rear wall of the fuel tank. By disposing the canister in this manner, the canister is disposed so as to be pressed by the collision load and abut against the fuel tank in the case of a rear collision from the rear.

  In addition, there exists a battery unit (battery pack) as what is arrange | positioned under the floor panel of a vehicle (for example, refer patent document 2). The battery unit described in Patent Document 2 is mounted on a hybrid vehicle, and is disposed together with a fuel tank in a space in the raised portion of the floor panel below the rear seat.

Japanese Patent No. 469971 (FIGS. 1 and 2) Japanese Patent No. 4225363 (FIGS. 3 and 5)

In the canister arrangement structure described in Patent Document 1, the canister is disposed between the second subframe and the fuel tank at the time of a rear collision from the rear by interposing the canister between the second subframe and the fuel tank. Protects against impact loads.
However, in addition to the canister, the fuel tank, and the vehicle body frame, many battery units and other parts are arranged below the floor panel as described in Patent Document 2. For this reason, there has been a demand for a canister arrangement structure that can be arranged efficiently.

  Therefore, the present invention has been invented to solve the above problems, and an object of the present invention is to provide a canister arrangement structure that can be arranged efficiently even if the arrangement space under the floor panel is narrow.

  In order to solve the above-mentioned problems, a canister arrangement structure according to the present invention is a canister arrangement structure that is arranged below a floor panel and adsorbs fuel evaporated in a fuel tank, and extends in the vehicle width direction. And a pair of left and right side members arranged in the front-rear direction at the left and right ends of the front and rear cross members, and a subframe that is connected in a substantially cross-beam shape, Below the floor panel and at least a part of the fuel tank and the canister, a reverse recessed space is formed in the vehicle width direction, and the upper surface of the fuel tank faces the vehicle rear side. An inclined inclined surface is formed, and the canister has a front portion disposed along the inclined surface and a rear portion disposed between the front and rear cross members. To.

According to such a configuration, the canister arrangement structure according to the present invention is arranged such that the rear portion of the canister fits between the front and rear cross members of the subframe, and the front portion of the canister is along the inclined surface of the fuel tank. In addition to being disposed, the canisters can be efficiently laid out even if the reverse concave space below the floor panel is narrow by being disposed in the reverse concave space formed below the floor panel.
Further, the canister can be protected from the collision load by the cross member at the time of the rear surface collision by being arranged so that the rear portion is accommodated between the front and rear cross members.

  In addition, it is preferable that a raised portion extending in the vehicle width direction is formed immediately before the front end portion of the canister on the upper surface of the fuel tank.

  According to such a configuration, a ridge extending in the vehicle width direction is formed immediately before the front end of the canister on the upper surface of the fuel tank, and by arranging the canister on the rear side of the ridge, in the event of a rear collision, When a collision load that presses the canister forward is applied, the canister comes into contact with the raised portion of the fuel tank, so that the canister can be elastically supported by the raised portion.

  In addition, a battery unit is preferably disposed in front of the fuel tank.

  According to such a configuration, the canister arrangement structure can be laid out without restricting the arrangement of the canisters even when the battery unit is arranged in front of the fuel tank below the floor panel. .

  According to the canister arrangement structure of the present invention, the canister can be arranged efficiently even if the arrangement space under the floor panel is narrow.

It is a principal part bottom view which shows the arrangement | positioning state under the floor panel of the vehicle rear part which shows the canister arrangement structure which concerns on embodiment of this invention. It is a principal part longitudinal cross-sectional view which shows the arrangement | positioning state under the floor panel of the vehicle rear part which shows the arrangement structure of the canister which concerns on embodiment of this invention. It is a principal part perspective view which shows the arrangement structure of the canister which concerns on embodiment of this invention. It is a principal part expanded longitudinal sectional view which shows the arrangement | positioning state under the floor panel of the vehicle rear part which shows the arrangement structure of the canister which concerns on embodiment of this invention. It is a figure which shows the modification of the arrangement structure of the canister concerning embodiment of this invention, and is a principal part longitudinal cross-sectional view which shows the arrangement | positioning state of a canister.

  With reference to FIGS. 1-4, an example of the arrangement structure of the canister which concerns on embodiment of this invention is demonstrated. First, the vehicle A on which the canister 2 is mounted will be described before the arrangement structure of the canister 2 is described.

≪Vehicle configuration≫
As shown in FIG. 1, the vehicle A is, for example, a passenger-type automobile having a cargo compartment L (see FIG. 2) behind a passenger compartment R (see FIG. 2), and is a power unit disposed in front of the passenger compartment R or the like. The vehicle runs with a power source (not shown) as a power source. The vehicle A is disposed below the floor panel 11 at the rear of the vehicle body 1 made of a panel material such as the floor panel 11 and a frame material such as the side frame 12, and is connected to the side frame 12, the subframe 16 and the like. A suspension member (not shown), a fuel tank T provided below the floor panel 11, a canister 2 disposed behind the fuel tank T, and a fuel pipe P disposed in the fuel tank T and the canister 2 etc. And a subframe 16 disposed below the canister 2, a battery unit B, a muffler 4 for exhausting exhaust gas, an exhaust pipe 41 connected to the muffler 4, and the like.

<Configuration of power unit>
The power unit (not shown) may be a prime mover that is supplied with fuel in the fuel tank T and is driven, for example, a hybrid engine. The power unit may be a gasoline engine, a diesel engine, an ethanol engine, or the like.

≪Body structure≫
As shown in FIGS. 1 and 2, the vehicle body 1 is a skeleton member of a vehicle A to which a power unit (not shown), a fuel tank T, a canister 2 and the like are fixed, for example, a floor panel 11 (see FIG. 1). The frame member includes a side frame 12, a first cross member 13, a second cross member 14, a third cross member 15, a sub frame 16, and the like, and a panel member.

<Configuration of floor panel>
The floor panel 11 shown in FIG. 2 is a member for forming the floor surface of the vehicle A, and is made of a metal flat plate member such as a steel plate. The floor panel 11 includes a reverse recessed space 11a formed in the vehicle width direction between the floor panel 11 and at least a part of the fuel tank T and the canister 2, and an upper front side of the reverse recessed space 11a. The seat installation part 11b formed in this is formed.
The reverse recessed space 11a is a lower space of the floor panel 11 formed to protrude toward the passenger compartment R side. The seat installation part 11b is a part where a rear seat (not shown) is arranged.

<Configuration of side frame>
As shown in FIG. 1, the side frame 12 is a pair of left and right skeleton members extending in the front-rear direction of the vehicle body 1, and is disposed on the left and right outer sides of the fuel tank T and the canister 2.

<Configuration of first cross member, second cross member, and third cross member>
As shown in FIG. 2, the first cross member 13, the second cross member 14, and the third cross member 15 are a plurality of skeleton members that are installed so as to be orthogonal to the left and right side frames 12 (see FIG. 1). At least the upper part and the front part of the fuel tank T and the front and rear of the battery unit B are installed.
As shown in FIG. 2, the first cross member 13 is joined to the upper surface of the floor panel 11 at the top of the fuel tank T, and is made of a hat-shaped steel material as viewed in a longitudinal section extending in the vehicle width direction. Become.
The second cross member 14 is joined to the lower surface of the floor panel 11 between the fuel tank T and the battery unit B, and is made of a hat-shaped steel material as viewed in a longitudinal section extending in the vehicle width direction.
The third cross member 15 is made of a steel material joined to the lower surface of the floor panel 11 on the front side of the battery unit B and extending in the vehicle width direction.

<Subframe configuration>
As shown in FIG. 1, the subframe 16 is a skeleton called a suspension member that supports a suspension member (not shown), and is elastically supported by the left and right side frames 12 by mount members 17. The sub-frame 16 includes two cross member portions 16a and 16b (cross members) extending in the vehicle width direction at an appropriate predetermined interval, and left and right ends of the two cross member portions 16a and 16b. Boomerang-shaped side member portions 16c and 16d (side members) that are joined to each other and extended in the front-rear direction, left and right end portions of the front and rear cross member portions 16a and 16b, and a pair of left and right side member portions 16c, And a frame-like portion 16e formed by connecting 16d in a substantially cross-beam shape (substantially frame shape).

  The front cross member portion 16a is formed of a square pipe disposed along the fuel tank T on the rear side of the fuel tank T, and has an appropriate interval below the center portion of the canister 2 (see FIGS. 2 and 4). Is arranged through. The front cross member 16a is constructed between the side members 16c and 16d.

  As shown in FIG. 1, the rear cross member portion 16b is a substantially hat-shaped frame member as viewed in a longitudinal section arranged parallel to the front cross member portion 16a with an appropriate interval (see FIG. 3). And is installed below the front end of the storage box La provided under the floor of the luggage compartment L. The rear cross member portion 16b is constructed between the side member portions 16c and 16d. The rear cross member portion 16b is formed so that the width in the front-rear direction of the center portion is narrow when viewed from below, and the width in the front-rear direction gradually increases from the center portion toward the left and right end portions.

The left and right side member portions 16c and 16d are made of a pair of left and right tubular steel materials formed by bending the front and rear end portions in the left and right direction, and are mounts for connecting the front end portion and the rear end portion to the side frame 12, respectively. A member 17 is provided.
As described above, the frame-shaped portion 16e is formed in a substantially cross-beam shape by connecting the cross member portions 16a, 16b extending in parallel with the vehicle width direction and the pair of left and right side member portions 16c, 16d extending in the front-rear direction. As a result, a skeleton having improved strength against a collision load is formed. A half of the canister 2 on the rear portion 2b side is disposed on the frame-shaped portion 16e.

≪Fuel tank configuration≫
As shown in FIG. 4, the fuel tank T is a hollow container made of a synthetic resin or metal for storing liquid automobile fuel such as gasoline, light oil, alcohol, etc. 2 It is held by the vehicle body 1 such as the cross member 14 and the cross member portion 16b. The fuel tank T is arranged from the lower side of the reverse recessed space 11a below the floor panel 11 and the first cross member 13 to the lower side of the seat installation portion 11b and the second cross member 14 as viewed from the side. The sub frame 16 is disposed on the front side of the cross member portion 16a.

  On the upper surface Ta of the fuel tank T, an inclined surface Tb formed obliquely descending toward the vehicle rear side, an inclined surface Tc formed obliquely descending toward the vehicle front side, and an inclined surface Tb And a raised portion Td swelled upward from between the inclined surface Tc and the inclined surface Tc. Further, on the upper surface Ta of the fuel tank T, a pump module M provided on the front inclined surface Tc, a liquid fuel pipe P2 (see FIG. 1), and an evaporative fuel pipe (not shown) are provided. And a clamp (not shown) for fixing to.

As shown in FIG. 4, the upper surface Ta of the fuel tank T is formed so as to follow the shape of the substantially inverted concave space 11 a of the floor panel 11 as viewed from the side.
Canister fixing brackets 21 and 22 for holding the left and right ends of the canister 2 in a state where the front portion 2a of the canister 2 is floated through a slight space from the inclined surface Tb on the rear inclined surface Tb (FIG. 3). Is installed). For this reason, the canister 2 is disposed in an inclined state along the inclined surface Tb.
The front inclined surface Tb is formed at a front-rear symmetrical position of the rear inclined surface Tb with the raised portion Td therebetween as viewed from the side.
The raised portion Td is formed so as to extend in the vehicle width direction from a portion immediately before the front end portion 2c of the canister 2 disposed on the upper surface Ta of the fuel tank T.

  The pump module M includes a suction filter for removing foreign matter in the fuel (not shown), a fuel pump for sending fuel from the liquid fuel pipe P2 (see FIG. 1) to the power unit, and a fuel level in the fuel tank T. A fuel level gauge to be detected and various valves are provided. The pump module M is housed in a unit case and is installed in the upper part of the fuel tank T.

≪Canister configuration≫
As shown in FIG. 4, the canister 2 adsorbs the fuel evaporated in the fuel tank T, thereby preventing the evaporated fuel from being released into the atmosphere, and at the time of purging, storing the evaporated fuel in the power unit. It is an apparatus for desorbing by the air sucked with the negative intake pressure and supplying it to an intake manifold (not shown). The canister 2 has a front portion 2a disposed between the reverse recessed space 11a below the floor panel 11 and the inclined surface Tb along the rear side surface and the inclined surface Tb of the raised portion Td, and the rear portion 2b is It arrange | positions so that it may fit between front and rear cross member part 16a, 16b. That is, as shown in FIG. 3, the rear portion 2b of the canister 2 is arranged in a state where it enters the frame-shaped portion 16e of the sturdy subframe 16 formed in a rectangular substantially cross-beam shape.

  The canister 2 includes an adsorbent (not shown) that is primarily adsorbed by sending evaporated fuel in the upper space in the fuel tank T when refueling the fuel tank T, and dust contained in the atmosphere that is taken in at the time of purging. A drain filter (not shown) for removing water, an evaporated fuel pipe (not shown), a pipe (not shown), and an internal pressure sensor (not shown) for detecting the internal pressure of the fuel pipe system are provided.

  The canister fixing brackets 21 and 22 are fixing members for fixing the canister 2 to the fuel tank T. One end side is fastened to the left and right ends of the front portion 2a of the canister 2 and the other end side is attached to the fuel tank T. It consists of a fixed metal flat plate.

≪Configuration of fuel piping≫
As shown in FIG. 1, the fuel pipe P is a pipe disposed in the fuel tank T, the canister 2 and the like, a fuel supply pipe P1 for supplying liquid fuel to the fuel tank T, and a liquid fuel from the fuel tank T as a prime mover. A liquid fuel pipe P2 for sending to the engine and an evaporated fuel pipe (not shown) for sending the evaporated fuel from the canister 2 to the prime mover.
The fuel supply pipe P1 is a pipe for supplying liquid fuel to the fuel tank T from the fuel filler port, and includes a filler pipe and a filler neck tube.
The liquid fuel pipe P2 is a pipe for sending liquid fuel, and one end is connected to the pump module M and the other end is connected to the power unit via an injector (not shown).
The evaporative fuel pipe (not shown) is a pipe for sending vapor fuel vapor in which liquid fuel is vaporized. One end is connected to the canister 2 and the other end is connected to the power unit via an intake manifold (not shown). It is connected.

≪Battery unit configuration≫
As shown in FIGS. 1 and 2, the battery unit B is a storage battery that supplies power to a power unit (not shown) and is installed in front of the fuel tank T below the floor panel 11 by a bracket (not shown) or the like. Yes. The battery unit B is formed of a horizontally long shape arranged along the fuel tank T.

≪Configuration of muffler and exhaust pipe≫
As shown in FIG. 1, the muffler 4 and the exhaust pipe 41 are members for sending exhaust gas exhausted from the power unit to the rear of the vehicle body and for silencing the engine sound. The exhaust pipe 41 is arranged so as to be bent left and right so as to avoid the fuel tank T and the side member portion 16d of the subframe 16 from the front to the rear.

≪Action≫
Next, the operation of the canister arrangement structure according to the embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 2, the canister 2 is arranged so that the front portion 2a is along the inclined surface Tb of the fuel tank T and is fixed to the fuel tank T by canister fixing brackets 21 and 22 (see FIG. 3). The rear portion 2b is disposed so as to be accommodated between the front and rear cross member portions 16a and 16b.

  For this reason, the front part 2a of the canister 2 is installed so as to be placed on the inclined surface Tb of the fuel tank T that can absorb the collision load by being deformed by the collision load when the rear collision occurs. Therefore, the front portion 2a can be installed so that the shock is buffered. Moreover, the front part 2a of the canister 2 can be efficiently arranged in a state where the narrow space under the floor panel 11 is effectively used by being arranged in the reverse recessed space 11a.

Further, since a raised portion Td and an inclined surface Tb extending in the vehicle width direction are formed immediately before the front end portion 2c of the canister 2, a collision load that presses the canister 2 forward acts in the event of a rear collision. Then, since the canister 2 comes into contact with the raised portion Td and the inclined surface Tb of the fuel tank T, the canister 2 can be elastically supported by the raised portion Td and the inclined surface Tb.
The canister 2 arranged in this manner can be arranged even in a place under the narrow floor panel 11 where various parts such as the battery unit B are arranged in front of the fuel tank T. Can be laid out without being restricted.

  In addition, the rear portion 2b of the canister 2 is disposed between the cross member portions 16a and 16b of the subframe 16 that is a skeleton member and between the left and right side frames 12, so that a collision load is generated at the time of a rear collision and a side collision. The canister 2 can be prevented from being directly loaded and can be protected from a collision load. Further, since the storage box La is installed behind the rear portion 2b of the canister 2, the storage box La absorbs a collision load when the storage box La is buckled and deformed in the event of a rear collision. Can be protected.

[Modification]
The present invention is not limited to the above-described embodiment, and various modifications and changes can be made within the scope of the technical idea. The present invention extends to these modifications and changes. Of course. In addition, the already demonstrated structure attaches | subjects the same code | symbol and abbreviate | omits the description.
FIG. 5 is a view showing a modified example of the canister arrangement structure according to the embodiment of the present invention, and is a longitudinal sectional view of a main part showing the arrangement state of the canister.

As shown in FIG. 5, the inclined surface TAb on the rear side of the fuel tank TA forms a recess TAe for installing the fuel pipe P with the clip 6 interposed therebetween, and the fuel pipe P is arranged on the inclined surface TAb. The canister 2 may be arranged thereon.
In this case, the clip 6 is made of a resin member having a U-shaped elastic member as viewed from the side for holding the fuel pipe P and a locking claw 6a for locking the fuel pipe P, and is fixed in the recess TAe. Has been.

  In this way, the fuel pipe P is disposed at a position recessed from the inclined surface TAb by engaging with the clip 6 in the concave portion TAe, so that the canister 2 is placed on the fuel pipe P. Even if it is not crushed, it can be installed efficiently.

[Other variations]
For example, the canister fixing brackets 21 and 22 only need to fix the canister 2 to the rear side of the fuel tank T, and may be fixed to the subframe 16 by bolting.

DESCRIPTION OF SYMBOLS 1 Car body 2 Canister 2a Front part 2b Rear part 2c Front end part 6 Clip 11 Floor panel 11a Reverse recessed space 12 Side frame 13 First cross member 14 Second cross member 15 Third cross member 16 Sub frame 16a, 16b Cross member part ( Cross member)
16c, 16d Side member part (side member)
16e Frame-shaped part A Vehicle B Battery unit T, TA Fuel tank Ta Upper surface TAe Recessed part Tb, TAb Inclined surface Td, TAd Raised part

Claims (3)

The canister is disposed below the floor panel and adsorbs the fuel evaporated in the fuel tank.
Front and rear cross members extending in the vehicle width direction;
A pair of left and right side members disposed in the front-rear direction at the left and right ends of the front and rear cross members, and a subframe that is connected in a substantially cross-beam shape,
Below the floor panel, a reverse recessed space is formed between the floor panel and at least a part of the fuel tank and the canister in the vehicle width direction,
On the upper surface of the fuel tank, an inclined surface inclined toward the vehicle rear side is formed,
The canister has a canister arrangement structure in which a front portion is arranged along the inclined surface and a rear portion is arranged between the front and rear cross members.   2. The canister arrangement structure according to claim 1, wherein a ridge extending in the vehicle width direction is formed immediately before the front end of the canister on the upper surface of the fuel tank.   The canister arrangement structure according to claim 1, wherein a battery unit is arranged in front of the fuel tank.

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