JP2002048012A - Canister installing bracket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To add the protecting function of a canister to a canister installing bracket, to protect the canister from a flying stone and muddy water, to stengthen an installing state, and to secure installing strength of a side frame side canister installing bracket without increasing the number of part items. SOLUTION: An evaporating fuel processing device is arranged for sucking and holding evaporating fuel introduced to an evaporating passage by being generated in a fuel tank at engine stopping time to and by the canister between the evaporating passage communicated with the inside of the fuel tank and a purge passage communicated with an intake air passage of an intake air system of an engine, and separating the evaporating fuel sucked to and held by the canister by the atmosphere introduced from an atmosphere connecting passage at engine operating time to be supplied to the intake air passage from the purge passage. The canister installing bracket is arranged for covering a lower part and a front part of the canister. The canister installing bracket is fixed to a side frame of a vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a canister mounting bracket, and in particular, without increasing the number of parts.
The present invention relates to a canister mounting bracket capable of adding a canister protecting function to a canister mounting bracket and providing a firm mounting state.

[0002]

2. Description of the Related Art In a vehicle, evaporated fuel leaking into the atmosphere from a fuel tank or the like contains a large amount of hydrocarbons (HC) and is one of the causes of air pollution, and also leads to fuel loss. For this reason, various techniques for preventing this are known. As a typical example, an evaporative fuel processing device (evaporator) that adsorbs and holds the evaporative fuel in a fuel tank in a canister containing an adsorbent such as activated carbon and supplies the evaporative fuel to the internal combustion engine by separating (purge) during operation of the internal combustion engine System).

As a mounting structure of the canister, there is one disclosed in Japanese Patent Application Laid-Open No. 8-40311. In the rear structure of the vehicle body disclosed in this publication, the upper end is connected to the inner surface of the rear side member and the lower end is connected to the vicinity of the lower end of the rear floor side, where the canister is arranged,
A protector having a cross-sectional shape substantially along the inner surface to the lower surface of the canister is mounted. The protector protects the canister, and the protector is also used as a snow prevention cover.

Further, there is one disclosed in Japanese Utility Model Laid-Open No. 63-159326. In the canister arrangement structure disclosed in this publication, an opening is formed in a skeleton member having a hat-shaped cross section that is joined to a lower surface of a rear front to form a closed cross section, and a member part that closes the opening is provided inside a fuel tank body. A canister that introduces and adsorbs the evaporated fuel generated in the canister is attached, the member parts are joined to the periphery of the opening, and the canister is housed and arranged in a closed cross section.

[0005]

Conventionally, in vehicles, in order to suppress the emission of fuel vapor into the atmosphere during refueling, a sealed type refueling gun is used to refuel while sealing the refueling port. Some systems employ a method in which the fuel vapor in the fuel tank is fed into the canister by the refueling pressure, and the vapor fuel is absorbed and held in the canister.

At this time, the canister is disposed below the floor of the vehicle, and may be damaged by obstacles or stepping stones. Therefore, it is necessary to protect the canister from obstacles or stepping stones.

Further, when the canister is fixed to a frame of a vehicle, a dedicated mounting bracket is required, and thus development of a mounting bracket has been desired.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an engine having a structure in which an engine is provided between an evaporation passage communicating with a fuel tank and a purge passage communicating with an intake passage of an intake system of the engine. While the engine is stopped, the evaporative fuel generated in the fuel tank and guided to the evaporative passage is adsorbed and held in the canister, and the evaporative fuel adsorbed and held in the canister by the air introduced from the air communication passage during operation of the engine. Providing an evaporative fuel treatment device for releasing fuel and supplying the fuel from the purge passage to the intake passage,
A canister mounting bracket that covers a lower portion and a front portion of the canister is provided, and the canister mounting bracket is fixed to a side frame of a vehicle.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION
The canister mounting bracket fixed to the side frame of the vehicle covers the lower part and the front part of the canister, and without increasing the number of parts, the canister mounting bracket is provided with a canister protecting function, and stepping stones and muddy water due to vehicle running are added. In addition to protecting the canister from the like, the mounting state is firm.

[0010]

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

1 to 7 show an embodiment of the present invention. In FIG. 2, 2 is a vehicle, 4 is a chassis, 6 is a front wheel, and 8 is a rear wheel.

The vehicle 2 has a chassis 4 and a main body (not shown) constituting an upper appearance mounted on the chassis 4. The chassis 4 includes two chassis 4 extending in the front-rear direction of the vehicle 2. , And a cross member 12 connecting the two side frames 10 and 10.

An engine 14 is mounted on the front side of the vehicle 2 and a transmission and a transfer (not shown) are also mounted.

A fuel tank 1 is provided on the rear side of the vehicle 2.
1 and 2, an evaporative passage (not shown) communicating with the fuel tank 16 and the engine 14 as shown in FIGS.
The evaporative fuel generated in the fuel tank 16 while the engine 2 is stopped and guided to the evaporative passage between a purge passage, for example, a purge hose 18 communicating with an intake passage (not shown) of an intake system of While adsorbed and held on the canister 20, the atmosphere communication passage during operation of the engine 2,
For example, an evaporative fuel processing device 24 is provided for releasing the evaporative fuel adsorbed and held in the canister 20 by the atmosphere introduced from the atmospheric hose 22 and supplying the evaporative fuel from the purge passage, for example, the purge hose 18 to the intake passage.

At this time, a canister mounting bracket 26 is provided to cover a lower portion and a front portion of the canister 20, and the canister mounting bracket 26 is fixed to the side frame 10 of the vehicle 2.

More specifically, the canister 20 is formed as shown in FIG.
As shown, one side frame 10 under the floor of the vehicle 2
(The left side in FIG. 2) and the canister mounting bracket 26 are fixed to the side frame 10 and the cross member 12 of the vehicle 2 while being disposed at the side portion and immediately after the cross member 12 located at the central portion of the vehicle 2. Is what you do.

The canister mounting bracket 26
As shown in FIG. 1 and FIGS. 4 to 7, the bottom plate portion 26-1 in a horizontal state and one side frame 10 (the left side in FIG. 2) side of the vehicle 2 stand from the bottom plate portion 26-1. The first upright portion 26-2 and the first upright portion 26-2
A side frame attaching portion 26-3 projecting horizontally and outwardly from the upper end of the vehicle 2; a second standing portion 26-4 standing upright on the front side of the vehicle 2 from the bottom plate portion 26-1; And a cross member attaching portion 26-5 protruding horizontally and outwardly from near the upper end of the two upright portions 26-4.

The bottom plate 26-1 and the first standing portion 26-2 of the canister mounting bracket 26 are formed with two continuous reinforcing projections 26-6.

The canister mounting bracket 26
As shown in FIG. 1, FIG. 4, and FIG. 5, a step portion 26-7 extending in the width direction of the vehicle 2 and improving the strength of the canister mounting bracket 26 is formed on the bottom plate portion 26-1.

The canister mounting bracket 2
Pipes, for example, a purge hose 18, an atmospheric hose 22, a fuel hose (not shown), and a brake hose (not shown) are arranged on a side portion of the side frame 10 between the vehicle 6 and one side frame 10 (the left side in FIG. 2) of the vehicle 2. The two side frame-side mounting brackets 28 are provided to extend from the upper part of the side frame 10 toward the inside of the vehicle 2.

Further, a pipe, for example, a purge hose 18 or an atmospheric hose 22 is connected to the canister 20, and at least one pipe, for example, the purge hose 1 is provided.
8 is fixed to the canister mounting bracket 26 by a plurality of clamps 30.

Furthermore, at least one pipe, for example, an atmosphere release valve 32 which is a valve in the middle of the atmosphere hose 22.
And the atmosphere release valve 32 is fixed to the canister mounting bracket 26.

That is, on the opposite side of the side frame 10 of the canister mounting bracket 26 or on the opposite side of the cross member 12 of the canister mounting bracket 26, in this embodiment, as shown in FIGS. On the opposite side of the cross member 12, there is provided an extension 34 extending beyond the canister dimension.
A bead 36 protruding toward the canister 20 is provided, a valve mounting surface 38 is provided on the upper surface of the bead 36, and the air release valve 32 is mounted on the valve mounting surface 38.

At this time, as shown in FIGS. 1, 4, and 7, the bead 36 is directed from the side frame 10 side of the canister mounting bracket 26, that is, from the first upright portion 26-2 to the central portion of the vehicle 2. While the height is gradually reduced.

Reference numeral 40 denotes a canister-side bracket used when the canister 20 is mounted on the bottom plate 26-1 of the canister mounting bracket 26.

Next, the operation will be described.

When mounting the canister 20 on the canister mounting bracket 26, the canister 20 is placed on the canister mounting bracket 26 from above, and the bottom portion 26-1 of the canister mounting bracket 26 and the second upright portion 2
Screwing is performed using 6-4. At this time, the canister 20 is provided with the purge hose 18 and the atmospheric hose 22 connected thereto.

The purge hose 18 is fixed to the bottom 26-1 of the canister mounting bracket 26 by a plurality of clamps 30, and the atmosphere hose 22
The air release valve 32 disposed in the middle of the bead 3 formed on the bottom surface 26-1 of the canister mounting bracket 26
Screw to 6.

Further, when the canister mounting bracket 26 is mounted on the vehicle 2, as shown in FIG.
3 is screwed from below onto two side frame-side mounting brackets 28 extending from the upper part of the side frame 10 toward the inside of the vehicle 2, and the cross member mounting portion 26-5 of the canister mounting bracket 26 is screwed. And screwed to the cross member 12 from below.

The mounting process of the canister mounting bracket 26 to the vehicle 2 and the canister mounting bracket 26
The order of the step of attaching the canister 20 to the canister 20 and the step of connecting the purge hose 18 and the atmospheric hose 22 to the canister 20 can be changed according to various conditions.

Thus, the protection function of the canister 20 can be added to the canister mounting bracket 26 without increasing the number of parts by the canister mounting bracket 26 covering the lower part and the front part of the canister 20. 2 can protect the canister 20 from stepping stones, muddy water, and the like.
In addition to contributing to damage prevention, the canister mounting bracket 26 is fixed to the side frame 10 having a high strength and a large cross-sectional shape, so that the mounting state can be firm. It is easy to secure the mounting strength of the canister mounting bracket 26, which is practically advantageous.

The canister 20 is connected to one side frame 10 under the floor of the vehicle 2 (the left side in FIG. 2).
And the canister mounting bracket 26 is fixed to the side frame 10 and the cross member 12 of the vehicle 2 so that the cross member 12 Can be used as a protection member for the canister 20, the canister 20 can be reliably protected, and the second upright portion 26-4, which is the protector portion of the canister mounting bracket 26 on the front side of the vehicle 2, can be reduced. The canister mounting bracket 26 can be reduced in size, and the canister mounting bracket 26 is fixed to the substantially orthogonal side frame 10 and the cross member 12, respectively.
Can be securely fixed, and vibration of the canister 20 can be prevented. Further, the large canister 20 can be fixed, and the canister mounting bracket 2 can be fixed.
6 can be formed in a simple shape, and it is not necessary to increase the thickness of the canister mounting bracket 26 in order to improve the mounting strength, and the side frame mounting portion 26-3 and the cross member mounting portion 26-5 are not required. It is not necessary to pay special attention to the shape for improving the strength of the bead 36 and the like,
It is practically advantageous.

Further, the canister mounting bracket 26
Pipes, for example, a purge hose 18, an atmospheric hose 22, a fuel hose (not shown), and a brake hose (not shown) are arranged on a side portion of the side frame 10 between the vehicle and one side frame 10 (the left side in FIG. 2) of the vehicle 2.
By providing two side frame-side mounting brackets 28 extending from the upper part of the side frame 10 toward the inside of the vehicle 2, particularly after the canister 20 is mounted on the vehicle 2, it is particularly possible to route the purge hose 18. , While increasing the degree of freedom in installation workability,
By extension of the side frame side mounting bracket 28,
The mounting workability of the canister mounting bracket 26 can be improved.

Furthermore, at least one pipe, for example, the purge hose 18 is connected to the canister mounting bracket 26.
In addition, by being fixed by the plurality of clamps 30, the positioning with the canister 20 is ensured, the guiding of the purge hose 18 in the wiring direction is ensured, and the interference of the purge hose 18 with other components is reliably prevented. In addition, since the canister 20 and the purge hose 18 have the same vibration system, no unreasonable force or harmful vibration acts on the connection portion between the canister 20 and the purge hose 18, and the purge hose 18 is efficiently removed and damaged. Can be prevented well.

An air release valve 32 is provided in at least one pipe, for example, in the middle of the air hose 22, and the air release valve 32 is fixed to the canister mounting bracket 26, whereby the air release valve 32 is provided.
Can be easily fixed, and the atmosphere release valve 32 can be partially assembled, so that the assemblability can be improved. Further, the positioning with respect to the canister can be reliably performed, the guiding in the routing direction of the atmosphere hose 22 is ensured, and the canister 20 and the atmosphere release valve 32 have the same vibration system. No excessive force or harmful vibration is applied to the connection between the air hose 22 and the air hose 22, and the air hose 22 can be efficiently prevented from coming off or being damaged, and the canister 20 and the air release valve 32 can be arranged close to each other. This can contribute to effective use of the arrangement space.

Further, on the opposite side of the side frame 10 of the canister mounting bracket 26 or on the opposite side of the cross member 12 of the canister mounting bracket 26, in this embodiment, on the opposite side of the cross member 12 of the canister mounting bracket 26, the canister is mounted. An extension 34 is provided which is longer than the dimension. With the configuration in which the air release valve 32 is mounted on the valve mounting surface 38, the air release valve 32 can be protected by the extension portion 34 which is longer than the canister size, which is practically advantageous and canister. If there is no mounting part for the mounting bracket 26, The strength of the canister mounting bracket 26 can be increased by a bead 36 provided on the side opposite to the side frame 10 of the star mounting bracket 26 or on the opposite side of the cross member 12 of the canister mounting bracket 26, and furthermore, it protrudes toward the canister 20. Since the atmosphere release valve 32 is attached to the bead 36, the height of the atmosphere release valve 32 with respect to the canister pipe connection portion can be adjusted by adjusting the bead height.
There is no need to use a valve with a special bracket,
A general-purpose valve can be used, the arrangement is easy, and the durability of the atmospheric hose 22 can be improved.

It should be noted that the present invention is not limited to the above-described embodiment, and various application modifications are possible.

For example, in the embodiment of the present invention, in order to improve the strength of the bottom plate 26-1 of the canister mounting bracket 26, a step 26- extending in the width direction of the vehicle 2 is provided.
Although 7 is formed, it is also possible to adopt a special configuration in which the bottom plate portion 42 is formed in a corrugated shape extending in the width direction of the vehicle.

That is, as shown in FIG. 8, when the bottom plate portion 42 of the canister mounting bracket 26 is formed in a corrugated plate shape, the first bottom plate portion 42-1 on the canister mounting side (not shown).
Is made small, and the cross-sectional shape of the second bottom plate portion 42-2 on the side to which the air release valve (not shown) is mounted on the rear end side is made large.

Then, the height of the bottom plate portion 42 of the canister mounting bracket 26 can be easily formed, which can be easily manufactured, which can contribute to cost reduction, and can improve the rigidity of the bottom plate portion 42, The cooling performance can be improved by forming a plate-shaped gap.

When the bottom plate portion of the canister mounting bracket is formed, it is possible to form a corrugated plate extending in the front-rear direction of the vehicle so as to improve the flow of traveling wind, and to provide the canister mounting bracket. When the bottom plate portion has a corrugated plate shape extending in the width direction of the vehicle, a predetermined cross-sectional shape and a predetermined shape are provided between the first bottom plate portion on the canister mounting side of the bottom plate portion and the second bottom plate portion on the air release valve mounting side. It is also possible to form a third bottom plate portion having a height position of, and to make the top portion of the third bottom plate portion function as a support for an atmospheric hose.

In some cases, it is necessary to bring the canister close to the heat source at the position where the canister is disposed. In such a case, the wind is generated behind the second standing portion 26-4 of the canister mounting bracket 26. A special configuration in which the guide plate 52 is provided is also possible.

That is, as shown in FIG. 9, the traveling wind guide plate 52 is integrally provided behind the second upright portion 26-4 located on the front side of the canister mounting bracket 26 on the vehicle. The upper end of 52 is inclined to face the front side of the vehicle.

At this time, the inclination angle of the upper end of the traveling wind guide plate 52 can be appropriately designed in consideration of the amount of guided traveling wind.

In this case, when the vehicle is traveling, the traveling wind is guided to the canister 20 by the traveling wind guide plate 52, so that the canister 20 can be efficiently cooled when the arrangement near the heat source is forced. Yes, practically advantageous.

Any structure capable of guiding the traveling wind to the canister 20 may be used. For example, as shown by a one-dot chain line in FIG. It is also possible to provide a traveling wind guide plate 62.

Further, as shown in FIG. 10, a flange portion 72 extending in the front-rear direction of the vehicle is provided on the vehicle center side of the bottom plate portion 26-1 of the canister mounting bracket 26, and a traveling wind guide portion 74 is provided on the flange portion 72. A special configuration may be provided.

That is, as shown in FIG. 10, a flange 72 is attached to the bottom plate 26-1 of the canister mounting bracket 26.
Is provided, a part of the flange portion 72 is cut out, the rear side of the vehicle is bent inward of the canister mounting bracket 26, and the cutout is exposed to the canister side by using the opening 76. It draws in traveling wind.

Then, by the flange portion 72,
The strength of the bottom plate 26-1 of the canister mounting bracket 26 can be improved, and the running wind guide portion 74 formed by cutting out the flange portion 72 allows the running wind to travel when the vehicle is running. Since the canister 20 is drawn into the canister 20 from the opening 76 of the guide portion 74, it is possible to efficiently cool the canister when the arrangement near the heat source is forced, which is practically advantageous.

[0050]

As described above in detail, according to the present invention, the fuel tank is stopped between the evaporative passage communicating with the fuel tank and the purge passage communicating with the intake passage of the intake system of the engine while the engine is stopped. The evaporative fuel generated inside and guided to the evaporative passage is adsorbed and held in the canister, and during operation of the engine, the evaporative fuel adsorbed and held in the canister is released by the air introduced from the air communication passage, and the purge passage is taken from the purge passage. The canister mounting bracket is provided to cover the lower part and the front part of the canister, and the canister mounting bracket is fixed to the side frame of the vehicle, so that the lower part and the front part of the canister are provided. The canister mounting bracket covers the canister without increasing the number of parts. The canister protect function can be added to the bracket, which can protect the canister from stepping stones and muddy water due to the running of the vehicle, and contributes to the prevention of damage to the canister, and the canister mounting bracket has a high strength and a cross-sectional shape. By fixing the canister mounting bracket to the canister mounting bracket on the side frame side, the mounting strength can be easily secured, which is practically advantageous.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view when a canister is mounted by a canister mounting bracket according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of the vehicle.

FIG. 3 is a schematic enlarged view of a portion indicated by arrow 3 in FIG. 2;

FIG. 4 is a plan view of a canister mounting bracket.

FIG. 5 is a view of the canister mounting bracket viewed from the left side of the vehicle when the vehicle is mounted.

FIG. 6 is a view of the canister mounting bracket viewed from the front of the vehicle in a state where the vehicle is mounted.

FIG. 7 is a view of the canister mounting bracket viewed from the rear of the vehicle when the vehicle is mounted.

FIG. 8 is a view showing a canister mounting bracket viewed from the left side of the vehicle in a vehicle mounted state according to another first embodiment of the present invention.

FIG. 9 is a view showing a canister mounting bracket and a canister from the left side of the vehicle in a vehicle mounted state according to another second embodiment of the present invention.

FIG. 10 is a schematic perspective view of a canister mounting bracket showing another second embodiment of the present invention.

[Explanation of symbols]

 2 Vehicle 4 Chassis 6 Front Wheel 8 Rear Wheel 10 Side Frame 12 Cross Member 14 Engine 16 Fuel Tank 18 Purge Hose 20 Canister 22 Atmospheric Hose 24 Evaporative Fuel Processing Device 26 Canister Mounting Bracket 26-1 Bottom Plate 26-2 First Standing Part 26 -3 Side frame mounting part 26-4 Second standing part 26-5 Cross member mounting part 28 Side frame side mounting bracket 30 Clamp 32 Atmospheric release valve 34 Extension part 36 Bead 38 Valve mounting surface

Claims (6)

[Claims] 1. An engine which is generated in a fuel tank between an evaporative passage communicating with a fuel tank and a purge passage communicated with an intake passage of an intake system of the engine while the engine is stopped, and is guided to the evaporative passage. The evaporative fuel that adsorbs and holds the evaporated fuel in the canister and releases the evaporated fuel that is adsorbed and held in the canister by the air introduced from the atmosphere communication passage during operation of the engine and supplies the evaporative fuel from the purge passage to the intake passage. A canister mounting bracket comprising a processing device, a canister mounting bracket covering a lower portion and a front portion of the canister, and the canister mounting bracket fixed to a side frame of a vehicle. 2. The vehicle according to claim 1, wherein the canister is disposed on a side portion of the side frame under the floor of the vehicle and immediately after the cross member, and the canister mounting bracket is fixed to the side frame and the cross member of the vehicle. Item 2. A canister mounting bracket according to Item 1. 3. A side frame-side mounting bracket extending from a portion above the side frame, while laying a pipe in a side frame side portion between the canister mounting bracket and the side frame. The canister mounting bracket according to claim 2, wherein the canister mounting bracket is fixed to the canister mounting bracket. 4. The canister mounting bracket according to claim 1, wherein a pipe is connected to the canister and provided, and at least one pipe is fixed to the canister mounting bracket. 5. The canister mounting bracket according to claim 1, wherein a pipe is connected to the canister, a valve is provided in at least one pipe, and the valve is fixed to the canister mounting bracket. 6. An extension extending beyond the canister dimension is provided on the opposite side of the side frame of the canister mounting bracket or on the opposite side of the cross member of the canister mounting bracket. The canister mounting bracket according to claim 5, wherein a bead projecting toward the canister is provided, and the bead functions as a valve mounting surface.