JP2557012Y2 - Automotive canister mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a canister mounting structure for an automobile, and more particularly, to a pipe mounting structure connected to a canister.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Utility Model Laid-Open Publication No.
As described in Japanese Patent Application Publication No. 6-206, there is known an automobile in which a canister is mounted on a spare tire pan provided at a rear portion of a vehicle body.

[0003] The canister is connected to a pipe for guiding fuel vapor from a fuel tank to the canister and a pipe for supplying fuel in the canister to the engine.

When the canister is arranged in the spare tire pan portion as described above, the pipe extends from the canister in the lateral direction of the vehicle body and is fixed to the rear side frame or a vehicle body member in the vicinity thereof while being appropriately fixed to the rear side frame. It is conceivable to extend linearly toward the front of the vehicle body.

[0005]

However, when the vehicle collides rearwardly, for example, when the vehicle collides from a rear vehicle, the rear portion of the vehicle body is deformed. At this time, the rear side frame is crushed and deformed, and the actual length is shortened. In addition, the rear side frame and the spare tire pan show different deformation behavior.

Accordingly, in the case where the canister is attached to the spare tire pan and the pipe is appropriately fixed to the rear side frame as described above, since the rear side frame and the spare tire pan exhibit different deformation behavior, the canister is attached to the spare tire pan. The canister and the pipe fixed to the rear side frame behave differently.As a result, the pipe may come off the canister or the rear side frame may be crushed and deformed to shorten the actual length. The pipe fixed to the rear side frame may be crushed and deformed together with the rear side frame to break or bend in various directions, and may be damaged by hitting surrounding members, resulting in fuel leakage.

Further, since the body member near the rear side frame, for example, the rear floor panel portion near the rear side frame exhibits the same deformation behavior as the rear side frame, the above problem is caused by appropriately fixing the pipe to the body member near the rear side frame. It can also occur in some cases.

In view of the above, an object of the present invention is to attach a canister to a spare tire pan and fix the pipe to a rear side frame or a vehicle body member near the rear side frame. An object of the present invention is to provide a canister mounting structure for an automobile that can prevent the canister mounting.

[0009]

In order to achieve the above object, a canister mounting structure for an automobile according to the present invention has a canister mounted on a spare tire pan at a rear portion of a vehicle body, and a pipe connected to the canister is a pipe connected to the canister. The pipe is fixed to the spare tire pan by a first fixing member, and is disposed at a predetermined distance in the front-rear direction of the vehicle body. The second fixing member and the third fixing member are fixed to the rear side frame or the vehicle body member near the rear side frame, and a downward bent portion of the vehicle body is formed between the second fixing member and the third fixing member. Features.

[0010] The second fixing member may be arranged near the lateral position of the canister in the vehicle lateral direction, and the third fixing member may be arranged near the front end of a deformation area at the time of a rear collision of the rear side frame.

The canister is disposed in a tire fixing bracket disposed at the center of the spare tire pan and bulging upward from the vehicle body. The pipe is fixed to the bottom of the spare tire pan by the first fixing member. The fixing by the second fixing member and the third fixing member can be performed on the rear side frame.

[0012]

As described above, the canister mounting structure for an automobile according to the present invention is formed by fixing the pipe to the spare tire pan by the first fixing member, so that the canister and the pipe can be connected to the canister at the time of a rear collision. Both the part and the spare tire pan behave integrally, so that even if the spare tire pan and the rear side frame behave differently, there is no relative displacement between the canister and the connection part of the pipe to the canister, and therefore the pipe There is no risk of detachment from the canister.

Further, the pipe is fixed to the rear side frame or a vehicle body member near the rear side frame by a second fixing member and a third fixing member arranged at a predetermined distance in the longitudinal direction of the vehicle body. Since the downward bent portion of the vehicle body is formed between the third fixing member and the third fixing member, the rear side frame is crushed or bent and the distance between the second fixing member and the third fixing member is reduced. In this case, the pipe is bent downward in the vehicle body at the bent portion, and as a result, the actual length of the pipe between the second fixing member and the third fixing member due to the deformation of the side frame is reduced. And the pipe is bent downward without any members, so that the pipe is bent and There is no fear of damage Upon member.

In particular, when the second fixing member is arranged near the lateral position of the canister in the vehicle body direction and the third fixing member is arranged near the front end of the rear side rear deformation area of the rear side frame, In the pipe extending along the rear side frame, the second fixing member is located at the rear end of the pipe which is affected by the deformation of the rear side frame, and the third fixing member is located at the front end. Among them, the downward bending is induced in the entire range affected by the deformation of the rear side frame, so that the shortening of the actual pipe length due to the deformation of the rear side frame can be favorably absorbed. Damage can be reliably prevented.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a perspective view from below showing an embodiment of a canister mounting structure for an automobile according to the present invention, FIG. 2 is a bottom view of the embodiment shown in FIG. 1, and FIG. 3 is III-III in FIG.
FIG. 4 is a sectional view taken along line IV-IV in FIG.

As shown in the drawing, a spare tire pan 4 bulging downward from the vehicle body is formed on a rear floor panel 2 at the rear of the vehicle body. The left and right rear side frames 6 are joined to each other.
Are connected by a cross member 8 extending in the lateral direction of the vehicle body, which is joined to the lower surface of the rear floor panel 2 at the front position of the spare tire pan 4 on the vehicle body. A silencer 10 is disposed below the rear floor panel 2 and in the vehicle transverse direction of the spare tire pan 4, and below the cross member 8 is a suspension cross member 12 extending in the vehicle lateral direction (see FIG. 1). Are not shown), and both ends of the suspension cross member 12 in the lateral direction of the vehicle body are connected to the left and right rear side frames 6.

The spare tire pan 4 has a canister 14
Is attached. The spare tire pan 4 is formed by a tire pan main body 4a which bulges downwardly of the vehicle body and a tire fixing bracket 4b which bulges upwardly of the vehicle body at a substantially central portion of the main body 4a. A canister 14 is disposed in the upward recess 4c to be formed, and the canister 14 is a cover 4d whose peripheral edge is joined to the bottom 4e of the tire pan body 4a (not shown in FIG. 1).
Covered from below. The canister 14 is attached to the spare tire pan 4 directly or indirectly via the cover 4d.

Two pipes 16 are connected to the canister 14. One pipe 16 is for guiding the fuel vapor from the fuel tank (not shown) to the canister 14, and the other pipe 16 is for supplying fuel from the canister 14 to the engine (not shown). is there.

The two pipes 16 extend laterally from the canister 14 to the rear side frame 6 under the bottom of the spare tire pan 4 (the bottom of the tire pan main body 4a) 4e and to the rear side frame 6, where they are bent to form the rear side. It extends along the frame 6 toward the front of the vehicle body. Both pipes above
The connecting portion 16a of the 16 to the canister 14 is connected to the canister 14 via a rubber hose 18, as shown particularly in FIG. The cover 4d has a cutout 4f for penetrating both pipes 16.

The two pipes 16 are connected to the bottom of the spare tire pan 4 by a first clip 20 as a first fixing member.
Fixed to 4e. In addition, the two pipes 16 are provided with a second clip 22 as a second fixing member and a third clip 24 as a third fixing member at a position separated by a predetermined distance in the vehicle longitudinal direction.
And is fixed to the rear side frame 6. Further, as shown in FIG. 3 in particular, the both pipes 16 are formed with a downwardly bent portion 26 of the vehicle body between the second clip 22 and the third clip 24. The second clip 22 is disposed near the position of the canister 16 in the lateral direction of the vehicle body, and the third clip 24 is disposed near the rear of the cross member 8.

The first, second and third clips
The manner in which the pipe 16 is fixed by 20, 22, and 24 is shown in FIG.
5 and FIG. 3, which are sectional views taken along line VV of FIG.
This is as shown in FIGS.

When the vehicle collides rearwardly, for example, when the vehicle collides with a vehicle behind, the rear part of the vehicle body is deformed. In this case, the deformation behaviors of the rear side frame 6 and the spare tire pan 4 are different, and the rear side frame 6 is crushed and deformed, and its actual length is shortened. The deformation of the rear side frame 6 occurs in a predetermined area from a rear end to a predetermined position in front. In the case of the present embodiment, deformation occurs in the area A from the rear end to the cross member 8, and the area in front of the cross member 8 is hardly deformed because the load is supported by the cross member 8. Therefore, the third clip
24 is a deformation area A of the rear side frame 6 at the time of a rear collision
Is located in the vicinity of the front end position.

As described above, the deformation behavior of the rear side frame 6 and the spare tire pan 4 is different when the vehicle collides, so that when the pipe 16 is fixed to the rear side frame 6, the pipe 16 moves together with the rear side frame 6. Due to the deformation behavior, the pipe 16 and the canister 14 attached to the spare tire pan 4 are relatively displaced, and the canister connecting portion 16a of the pipe 16 is disengaged from the canister 14 (the rubber hose 18 is used as in this embodiment). In this case, the rubber hose 18 comes off the rubber hose 18), and fuel leakage occurs. However, in the above embodiment, since the pipe 16 is fixed to the spare tire pan bottom 4e by the first clip 20, even if the deformation behavior of the rear side frame 6 and the spare tire pan 4 is different, the canister 14 and the pipe The connection portion 16a to the canister 14 deforms integrally with the spare tire pan 4, and no relative displacement occurs between them.
Therefore, detachment of the pipe 16 from the canister 14 is prevented.

In general, when the pipe 16 is fixed to the rear side frame 6, the pipe is crushed and deformed together with the deformation of the rear side frame, causing breakage (cutting of the pipe) or bending in various directions. It is deformed and damaged by hitting surrounding members, causing fuel leakage. However, in the above structure, the pipe 16 is provided with the second and third clips 22, which are arranged at a predetermined distance in the longitudinal direction of the vehicle body.
24 fixed to the rear side frame 6 and the second
Since the vehicle body downwardly bent portion 26 is formed between the third clip 22 and the third clip 24, the rear side frame 6
When the distance between the second and third clips 22 and 24 is shortened due to crushing or bending deformation of the pipe 16, the pipe 16 is bent downward by the bent portion 26, and as a result, the rear side frame 6 is bent. Even when the actual length between the second and third clips 22 and 24 is shortened by the deformation of the pipe, the bent portion 26 is bent and displaced downward with respect to the pipe (deforms downward in a U-shape). By that)
The shortening of the actual length can be absorbed, thereby preventing breakage of the pipe 16 due to crushing deformation, and since the pipe 16 is bent downward without any other members, the pipe is bent. It is also possible to prevent breakage caused by bending and hitting surrounding members.

In the above embodiment, the second clip 22 is disposed in the vicinity of the position of the canister 14 in the lateral direction of the vehicle body, and the third clip 24 is located at the front end of the deformation area A at the time of rear collision of the rear side frame 6. The second clip 22 is attached to the front end of the pipe 16 extending along the rear side frame 6 at the rear end of the range affected by the deformation of the rear side frame 6. The third clip 24 has been positioned, and thus the pipe 16
In this case, a downward bending is induced in the entire range affected by the deformation of the rear side frame 6 so that the shortening of the actual pipe length due to the deformation of the rear side frame 6 can be favorably absorbed. The breakage of the pipe 16 can be reliably prevented.

In the above embodiment, the pipe 16 is fixed to the rear side frame 6 by the second and third clips 22 and 24.
By fixing 2, 24 to a vehicle body member near the rear side frame 6 (a vehicle body member showing the same deformation behavior as the rear side frame 6, for example, the rear floor panel 2), it is fixed to a vehicle body member near the rear side frame 6. The positions of the second and third clips 22 and 24 at that time are the same as described above, and in this case, the same operation and effect as described above can be obtained.

Further, in the structure of the above embodiment, the area up to the cross member 8 is the deformation area of the rear side frame 6, but if the structure is different from this, the deformation area of the rear side frame 6 is also different accordingly. The position of the three clips 24 may be arranged in the vicinity of the front end position of the deformation area accordingly.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention as viewed from below.

FIG. 2 is a bottom view of the embodiment shown in FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a sectional view taken along line VI-VI of FIG. 3;

FIG. 7 is a sectional view taken along the line VII-VII of FIG. 3;

[Explanation of symbols]

 4 Spare tire pan 4b Tire fixing bracket 4e Spare tire pan bottom 6 Rear side frame 8 Cross member 14 Canister 16 Pipe 20 First fixing member 22 Second fixing member 24 Third fixing member 26 Bent portion A Deformation area

Claims (3)

(57) [Scope of request for utility model registration] 1. A canister is mounted on a spare tire pan at a rear portion of a vehicle body, and a pipe connected to the canister extends in a lateral direction of the vehicle body from the canister and extends forward of the vehicle body along a rear side frame. Is
Fixed to the spare tire pan by a first fixing member,
The vehicle is fixed to the rear side frame or a vehicle body member near the rear side frame by a second fixing member and a third fixing member disposed at a predetermined distance in the vehicle front-rear direction, and the vehicle body is disposed between the second fixing member and the third fixing member. A canister mounting structure for an automobile, wherein a downward bent portion is formed. 2. The method according to claim 1, wherein the second fixing member is disposed near a lateral position of the canister in the vehicle body direction, and the third fixing member is disposed near a front end of a deformation area at the time of rear collision of the rear side frame. The canister mounting structure for an automobile according to claim 1, wherein: 3. The spare tire pan, wherein the canister is disposed in a tire fixing bracket disposed at the center of the spare tire pan and bulging upward from the vehicle body, and the pipe is fixed by the first fixing member to the spare tire pan. 3. The canister mounting structure for an automobile according to claim 1, wherein the mounting is performed on the bottom portion, and the fixing by the second fixing member and the third fixing member is performed on the rear side frame.