JP4700031B2 - Mounting structure for vehicle canister - Google Patents

Description

  The present invention relates to a mounting structure for a vehicle canister that is disposed below a floor panel and adsorbs evaporated fuel.

As a mounting structure for a vehicle canister, a structure in which a canister is disposed below a floor panel is known.
This type of vehicle canister mounting structure has been arranged with consideration given to avoiding damage to the canister as appropriate in the event of a rear impact (a rear impact).

As such a mounting structure for a vehicle canister, a structure in which a canister is attached to a lower surface of a floor panel with a belt-like band is known (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 2002-67716 (page 7, FIG. 8)

The technique of Patent Document 1 will be described.
FIG. 6 is a diagram for explaining a basic configuration of a conventional mounting structure for a vehicle canister.
The vehicle canister mounting structure 200 is a structure in which a canister 202 is applied to the lower surface of a floor panel 201, and the canister 202 is fixed between the floor panel 201 and the cross member 204 with a band 203.

However, since the vehicle canister mounting structure 200 is fixed to the floor panel 201, the floor panel 201 is pushed by a spare tire (not shown) stored in the floor panel 201 at the time of a rear collision, for example. The canister 202 fixed to the surface may be deformed.
In addition, in the vehicle canister mounting structure 200, for example, in order to move to a position where the canister 202 is not deformed, it may be necessary to reduce the fuel tank or the vehicle interior space to secure the space.

  The present invention employs a structure in which a canister is difficult to be deformed due to a rear impact when the canister is disposed below the floor panel, and the mounting of the canister can be easily attached to the bottom of the floor panel. It is an object to provide a structure.

According to the first aspect of the present invention, left and right rear frames are extended in the front-rear direction of the vehicle body, and front and rear cross members are connected to these left and right rear frames. A vehicle in which a floor panel is put on the frame and the front / rear cross member from above, and a canister for adsorbing evaporated fuel in a space surrounded by the left / right rear frame and the front / rear cross member is installed below the floor panel. Canister mounting structure,
A first bracket for reinforcing the floor panel is passed between the front and rear cross members, a canister is arranged below the first bracket, and a second bracket is attached to the first bracket so as to surround the canister. A canister is attached and the canister is protected by the outer shells of the first and second brackets, a bottom surface portion on which the canister is previously attached to the second bracket, and front and rear support portions raised upward from the front and rear of the bottom surface portion. And the front and rear support portions are fixed to the first bracket, and the first bracket, the bottom surface portion of the second bracket, and the outer frame that surrounds the canister by the front and rear support portions of the second bracket are configured. is, the bottom portion is formed in the front, a first reinforcing part for reinforcing the bottom part, are formed in the rear, and a second reinforcing part for reinforcing the bottom part, in order to promote the heat dissipation of the canister, A first heat-dissipating opening that opens the bottom surface of the canister, and a first reinforcing portion is provided in the vicinity of the first mounting portion that is formed on the left side of the canister and attaches the front portion of the canister. The portion is provided on the right side of the canister and is provided in the vicinity of a third attachment portion for attaching the rear portion of the canister .

In the invention according to claim 1, the left and right rear frames are extended in the longitudinal direction of the vehicle body, and the front and rear cross members are connected to the left and right rear frames, and these left and right rear frames are connected. A floor panel is put on the frame and the front / rear cross member from above, and a canister is disposed below the floor panel and in a space surrounded by the left and right rear frames and the front / rear cross member.
Since the first bracket for reinforcing the floor panel is passed between the front and rear cross members, the rigidity of the floor panel is increased.
Since the canister is arranged below the first bracket and the second bracket is attached to the first bracket so as to surround the canister, the canister can be protected by the outer shells of the first and second brackets. it can. As a result, a structure in which the canister is difficult to deform due to a rear collision (a rear collision from the rear) or the like can be achieved.
Further, a bottom surface portion to which the canister is attached in advance and front and rear support portions raised upward from the front and rear of the bottom surface portion are formed on the second bracket, and the front and rear support portions are the first bracket. Fixed to. Note that an outer shell that surrounds the canister is formed by the first bracket, the bottom surface of the second bracket, and the front and rear support portions of the second bracket.

Further , the bottom surface portion includes a first reinforcement portion that is formed at the front portion and reinforces the bottom surface portion, and a second reinforcement portion that is formed at the rear portion and reinforces the bottom surface portion, so that the rigidity of the bottom surface portion is improved. Can be achieved.
Further , in order for the bottom surface portion to promote heat dissipation of the canister, first to fourth heat dissipation openings that open the bottom surface of the canister are formed. This promotes heat dissipation of the canister.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a perspective view showing a skeleton of a vehicle body rear structure that employs a vehicle canister mounting structure according to the present invention, and FIG. 2 is a rear view of the vehicle body rear structure shown in FIG.

  As shown in FIGS. 1 and 2, the rear structure 10 of the vehicle body extends rearward from the rear ends of the left and right side sills 11 and 12, and the left and right rear frames 13, which form a skeleton in the longitudinal direction of the rear vehicle body. 14, a front cross member 15 that extends in the width direction in front of these rear frames 13, 14 and connects the left and right rear frames 13, 14, and is provided at the rear of the front cross member 15, The rear cross member 16 that connects the right rear frames 13 and 14 and the left and right reinforcing frames 17 and 18 that are connected near the center between the front and rear cross members 15 and 16 and improve rigidity. Left and right rear frames 13 and 14, front and rear cross members 15 and 16, and left and right rear frames 17 and 18 are arranged in front of the vehicle interior lower cross to connect the left and right rear frames 13 and 14. With member 22 A floor panel (vehicle body floor) 19 that covers the left and right rear frames 13 and 14, the front and rear cross members 15 and 16, the left and right reinforcing frames 17 and 18 and the lower compartment cross member 22 from above. 2), as shown in FIG. 2, it is disposed below the left and right reinforcement frames 17 and 18 and near the center between the front and rear cross members 15 and 16, and adsorbs and releases the evaporated fuel. A canister 24 that is disposed in front of the canister 24 at the lower part of the floor panel 19, and is disposed below the canister 24 at the lower part of the left and right rear frames 13, 14. And a rear sub-frame 26 that supports (not shown) and the like.

The floor panel 19 is formed in a concave shape in the rear portion downward, and a spare tire storage portion 21 for storing a spare tire (not shown) is formed.
The left and right rear frames 13, 14 are substantially symmetrical with respect to the vehicle body center C1.

  The left and right reinforcing frames 17 and 18 are positioned below the floor panel 19 and have a bracket function for enclosing the canister 24 as will be described later. Hereinafter, the “left and right reinforcing frames 17 and 18” are referred to as “first”. 1 brackets 17 and 18 ”.

3 is a rear view of the mounting structure of the vehicle canister shown in FIG. 2, FIG. 4 is a perspective view showing the outer periphery of the mounting structure of the vehicle canister shown in FIG. 2, and FIG. It is a perspective view of the mounting structure of the vehicle canister shown.

  As shown in FIGS. 3 to 5, the vehicle canister mounting structure 30 has left and right rear frames 13 and 14 extending in the longitudinal direction of the vehicle body. The front and rear cross members 15 and 16 are connected to the left and right rear frames 13 and 14, and the front and rear cross members 15 and 16 are covered with a floor panel 19 from above. A canister 24 that adsorbs evaporated fuel is disposed in a space below and surrounded by left and right rear frames 13 and 14 and front and rear cross members 15 and 16. The first brackets 17 and 18 disposed between the front and rear cross members 15 and 16, the second bracket 32 attached to the first brackets 17 and 18 from below, and the first brackets. Composed of canister 24 that is surrounded in the longitudinal direction in the outer 47 of the bracket 17, 18 and the second bracket 32.

  As shown in FIG. 4, the first bracket 17 is formed in the main body portion 34 formed in a concave shape in cross section, flange portions 35 and 36 formed on both sides of the main body portion 34, and the main body portion 34. This is a member composed of the bracket mounting portions 37 and 38 before and after the second bracket 32 is attached, and the rigidity of the floor panel 19 (see FIG. 1) can be enhanced. The first bracket 18 is a member having the same configuration as the first bracket 17.

  As shown in FIG. 3, the second bracket 32 includes a bottom surface portion 41 to which the canister 24 is attached in advance, front and rear support portions 42 and 43 raised upward from the front and rear of the bottom surface portion 41, and Mounting flanges 44, 44 formed at the front end of the front support portion 42 and attached to the front bracket mounting portions 37, 37 of the first bracket 17, 18 and formed at the front end of the rear support portion 43, the first bracket 17, 18 and mounting flanges 45, 45 to be attached to the rear bracket mounting portions 38, 38 are formed. The second bracket 32 is fixed to the first brackets 17 and 18 with a plurality of bolts 49.

  The first brackets 17 and 18, the bottom surface portion 41 of the second bracket 32, and the front and rear support portions 42 and 43 of the second bracket 32 constitute an outer shell 47 that surrounds the canister 24.

The bottom surface portion 41 is formed on the left side of the first and third mounting portions 51 to 53 for attaching the canister 24, and is formed on the right side of the rear portion and the first reinforcing portion 54 that reinforces the bottom surface portion 41. In order to promote the heat radiation of the canister 24, the first to fourth heat radiation openings 56 to 59 for opening the bottom surface 24a of the canister 24 are formed. The canister 24 is attached to the first to third attachment portions 51 to 53 with bolts 61.
The first and second reinforcing portions 54 and 55 can improve the rigidity of the bottom surface portion 41.

  As shown in FIGS. 2 and 4, the fuel tank 25 is supported by the fuel tank bracket 64 attached to the lower surface of the floor panel 19 at the rear left and right, and supported by the left and right support channels 65 and 66 from below. Is done. In the left and right support channels 65 and 66, front ends 65 a and 66 a are attached to the lower compartment cross member 22, and rear ends 65 b and 66 b are attached to the front cross member 15.

  In the vehicle canister mounting structure 30, since the first brackets 17 and 18 that reinforce the floor panel 19 are passed between the front and rear cross members 15 and 16, the rigidity of the floor panel 19 is enhanced.

  Since the canister 24 is arranged below the first brackets 17 and 18 and the second bracket 32 is attached to the first brackets 17 and 18 so as to surround the canister 24, the first brackets 17, 18 and The canister 24 can be protected by the outer shell 47 of the second bracket 32. As a result, a structure in which the canister 24 is not easily deformed by a rear collision (a rear collision from the rear) or the like can be obtained.

  That is, in the vehicle canister mounting structure 30, since the first brackets 17 and 18 that also have reinforcing members are passed to the floor panel 19, the rigidity of the floor panel 19 is improved, and deformation of the floor panel 19 can be suppressed. it can.

  Further, in the vehicle canister mounting structure 30, the first brackets 17, 18 are passed between the front and rear cross members 15, 16 above the canister 24 placement site, so that the floor panel of the canister 24 placement site is provided. The rigidity of 19 is high. For example, when a rear collision occurs, even when a load is applied to the floor panel 19 at the location where the canister 24 is placed by a spare tire (not shown) stored in the spare tire storage portion 21, the location where the canister 24 is placed The deformation is suppressed, and it is expected that the front cross member 15 is rotated and deformed so that the rear portion of the canister 24 is lifted upward with the front cross member 15 as a fulcrum. Therefore, buffering with the front fuel tank 25 can be prevented.

  Further, since the canister 24 is covered with the outer shell 47 composed of the first brackets 17 and 18 and the second bracket 32, for example, even when a rear collision occurs, the canister 24 is less deformed.

  Since the second bracket 32 includes attachment portions 51 to 53 to which the canister 24 is attached in advance, and the second bracket 32 already attached to the canister 24 is attached to the first brackets 17 and 18, the canister 24 is disposed. The canister 24 can be easily attached below the floor panel 19 to be provided. As a result, the workability of the canister 24 assembling work can be improved. That is, since the canister 24 is assembled to the second bracket 32, the canister 24 can be easily attached to the floor panel 19 side.

  In addition, as shown in FIG. 5, the vehicle canister mounting structure 30 according to the present invention is enclosed in the front-rear direction of the canister 24 by outer shells 47 of the first brackets 17 and 18 and the second bracket 32. In addition to this, it may surround the left and right direction of the canister 24.

  In addition, in the vehicle canister mounting structure 30 according to the present invention, as shown in FIG. 4, the first brackets 17 and 18 are two-segment brackets. However, the present invention is not limited to this. It may be a formed bracket.

  The vehicle canister mounting structure according to the present invention is suitable for use in an automobile.

It is a perspective view which shows the frame | skeleton of the vehicle body rear part structure which employ | adopts the mounting structure of the vehicle canister which concerns on this invention. It is a rear view of the vehicle body rear part structure shown by FIG. FIG. 3 is a rear view of the vehicle canister mounting structure shown in FIG. 2. FIG. 3 is a perspective view showing an outer periphery of the mounting structure of the vehicle canister shown in FIG. 2. FIG. 3 is a perspective view of a mounting structure for a vehicle canister shown in FIG. 2. It is a figure explaining the basic composition of the attachment structure of the conventional vehicle canister.

Explanation of symbols

  13, 14 ... Left and right rear frames, 15, 16 ... Front and rear class members, 17, 18 ... First bracket (reinforcement frame), 19 ... Floor panel, 24 ... Canister, 30 ... Vehicle canister Mounting structure, 32 ... second bracket, 47 ... outer shell, 51 ... mounting portion.

Claims (1)

Left and right rear frames are extended in the longitudinal direction of the vehicle body, and front and rear cross members are connected to these left and right rear frames, and these left and right rear frames and front and rear cross members are connected. In a vehicle canister mounting structure in which a floor panel is covered from above, and a canister that adsorbs evaporated fuel to a space surrounded by the left and right rear frames and front and rear cross members is attached below the floor panel.
A first bracket that reinforces the floor panel is passed between the front and rear cross members, the canister is disposed below the first bracket, and the first bracket is surrounded by the first bracket so as to surround the canister. 2 brackets are attached to protect the canister with the outer shells of the first and second brackets;
The second bracket includes a bottom surface portion to which the canister is attached in advance, and front and rear support portions raised upward from the front and rear of the bottom surface portion, and the front and rear support portions are the first and second support portions. Fixed to the bracket
An outer shell that surrounds the canister is constituted by the first bracket, the bottom surface of the second bracket, and the front and rear support portions of the second bracket ,
The bottom surface portion is formed at the front portion, the first reinforcement portion for reinforcing the bottom surface portion, the second reinforcement portion formed at the rear portion for reinforcing the bottom surface portion, and the heat dissipation of the canister And first to fourth heat radiation openings that open the bottom surface of the canister,
The first reinforcing portion is formed on the left side of the canister and is provided in the vicinity of a first attachment portion for attaching the front portion of the canister, and the second reinforcing portion is formed on the right side of the canister and attaching the rear portion of the canister. A canister mounting structure for a vehicle, wherein the mounting structure is provided in the vicinity of a third mounting portion .

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