Canister

Abstract

To provide a canister capable of protecting at least one of pipes connected to each of a fuel port, an atmospheric port and a purge port from interference with stepping stones or road surfaces.SOLUTION: Provided is a canister in which a container provided with a fuel port connected to a fuel tank, an atmospheric port opened to the atmosphere, and a purge port connected to an intake passage of an engine, is filled with an adsorbent. In the container, a protector which defines a space between itself and an outer wall of the container is attached to the outer wall of the container. In the space, at least one of pipes connected to each of the fuel port, the atmospheric port, and the purge port is arranged.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a canister. [Background technology]

[0002] Patent document 1 describes a canister that has a container having an evaporated fuel introduction port that communicates with a fuel tank, an atmospheric port that communicates with the atmosphere, and a purge port that communicates with an engine intake system, and is filled with an adsorbent that adsorbs and desorbs evaporated fuel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-240516 Summary of the Invention [Problem to be solved by the invention]

[0004] There are cases where it is required to protect the pipes connected to the evaporated fuel introduction port (fuel port), the air port, or the purge port described in Patent Document 1 from interference with flying stones or the road surface.

[0005] In view of the above circumstances, an object of at least one embodiment of the present invention is to provide a canister that can protect at least one of the pipes connected to the fuel port, the atmospheric port, or the purge port from interference with flying stones or the road surface. [Means for solving the problem]

[0006] (1) In at least one embodiment of the canister of the present invention, an adsorbent is filled in a container provided with a fuel port connected to a fuel tank, an atmospheric port open to the atmosphere, and a purge port connected to an intake passage of an engine, and a protector is attached to the outer wall of the container to define a space between the outer wall and the protector, and at least one of pipes connected to the fuel port, the atmospheric port, or the purge port is arranged in the space.

[0007] According to the above configuration (1), at least one of the pipes connected to the fuel port, the atmospheric port, or the purge port is disposed in the space defined between the outer wall of the container and the protector, so that at least one of the pipes connected to the fuel port, the atmospheric port, or the purge port can be protected from interference with flying stones or the road surface.

[0008] (2) In some embodiments, in the configuration of (1) above, the container has a recess that is recessed relative to the outer circumferential surface of the container, and the protector covers the recess.

[0009] According to the above configuration (2), the amount of protrusion of the protector from the outer peripheral surface of the container can be reduced.

[0010] (3) In some embodiments, in the configuration of (2) above, the container has a main chamber and an auxiliary chamber with a smaller volume than the main chamber inside the container, and the protector defines the space between itself and an outer wall that defines the auxiliary chamber.

[0011] According to the above configuration (3), the recesses can be arranged efficiently.

[0012] (4) In some embodiments, in the configuration of (1) or (2) above, the protector has a bent or curved portion in a cross section perpendicular to the pipe.

[0013] According to the above configuration (4), a sufficient space can be defined between the outer wall of the container and the protector.

[0014] (5) In some embodiments, in the configuration of (2) or (3) above, the container has a rectangular cross section, and the recess is provided at a corner of the rectangle.

[0015] According to the above configuration (5), the canister can be made smaller.

[0016] (6) In some embodiments, in the configuration of (5) above, the protector has an outer surface that is flush with the outer wall surface of the container.

[0017] According to the above configuration (6), the outer wall surface of the container and the outer surface of the protector can be integrated. [Effects of the Invention]

[0018] According to at least one embodiment of the present invention, at least one of the pipes connected to the fuel port, the atmospheric port, or the purge port can be protected from interference with flying stones or the road surface. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 2 is a front view showing the canister according to the embodiment. [Figure 2] 2 is a cross-sectional view of the canister shown in FIG. 1 taken along line II-II. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, several embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of components described as embodiments or shown in the drawings are merely illustrative examples and are not intended to limit the scope of the present invention.

[0021] Fig. 1 is a front view showing a canister 1 according to an embodiment, and Fig. 2 is a cross-sectional view of the canister 1 shown in Fig. 1 taken along line II-II. As shown in Fig. 1, the canister 1 according to an embodiment is a charcoal canister having a container 2 filled with an adsorbent 3 (see Fig. 2), and one end of the canister is provided with a fuel port 4 connected to a fuel tank, an air port 5 open to the atmosphere, and a purge port 6 connected to an intake passage of an engine. In the example shown in Fig. 1, the fuel port 4, the air port 5, and the purge port 6 are arranged side by side, but this is not limiting. The adsorbent 3 is, for example, activated carbon, but is not limited to this and may be any material that can adsorb and desorb fuel contained in fuel evaporative gas.

[0022] A protector 8 is attached to the outer wall 21 of the container 2, defining a space 7 between the protector 8 and the outer wall 21 of the container 2, and at least one of the pipes connected to the fuel port, the atmospheric port, or the purge port is disposed in the space 7. In the example shown in Fig. 1, the pipe 41 connected to the fuel port 4 and the pipe 61 connected to the purge port 6 are disposed in the space 7, but this is not limited thereto, and all of the pipes connected to the fuel port 4, the atmospheric port 5, or the purge port 6 may be disposed in the space, or any two pipes or any one pipe may be disposed in the space.

[0023] The container 2 has a recess 22 recessed into the outer circumferential surface of the container 2, and the protector 8 covers the recess 22. The container 2 has a rectangular cross section, and the recess 22 is provided at a corner of the rectangle, but this is not limited to this. The protector 8 has a bent or curved portion in a cross section perpendicular to the pipes 41 and 61. In the example shown in FIG. 1, the protector 8 has a portion 81 bent at a right angle in a cross section perpendicular to the pipes 41 and 61, but this is not limited to this.

[0024] As shown in FIG. 2, the container 2 has a main chamber 23 and an auxiliary chamber 24, which has a smaller volume than the main chamber 23, inside the container 2. The protector 8 defines a space 7 between itself and an outer wall 21a (see FIG. 1) that defines the auxiliary chamber 24. The main chamber 23 and the auxiliary chamber 24 are separated by a partition wall 25, but communicate with each other at one end where the fuel port 4, the atmospheric port 5, and the purge port 6 are provided and at the opposite end. The main chamber 23 is communicated with the fuel port 4 and the purge port 6, and the auxiliary chamber 24 is communicated with the atmospheric port 5. The main chamber 23 and the auxiliary chamber 24 are each filled with an adsorbent 3, and the filled adsorbent 3 is pressed toward the end where the fuel port 4, the atmospheric port 5, and the purge port 6 are provided by perforated plates 26, 27 and springs 28, 29 provided in the main chamber 23 and the auxiliary chamber 24, respectively.

[0025] As shown in Fig. 1, the container 2 has a rectangular cross section, and the recess 22 is provided at a corner of the rectangle. The recess 22 is recessed toward the auxiliary chamber 24 with respect to the outer peripheral surface of the container, and the protector 8 is provided so as to form the corner of the rectangle, but this is not limitative. In the example shown in Fig. 1, the recess 22 is provided at a corner that is the lower part of the container 2, but it may also be provided at a corner that is the upper part.

[0026] The protector 8 has an outer surface 8a that is flush with the outer wall surface 21b of the container 2. The container 2 and the protector 8 are integrally molded, but the protector 8 may be adhered or welded to the container 2, or may be fixed with screws or the like.

[0027] According to the canister 1 of the embodiment, at least one of the pipes connected to the fuel port 4, the atmospheric port 5, or the purge port 6 is arranged in the space 7 defined between the outer wall 21 of the container 2 and the protector 8, so that at least one of the pipes connected to the fuel port 4, the atmospheric port 5, or the purge port 6 can be protected from interference with flying stones or the road surface.

[0028] Furthermore, the container 2 has a recess 22 recessed relative to the outer circumferential surface of the container 2, and the protector 8 covers the recess 22, so that the amount of protrusion of the protector 8 relative to the outer circumferential surface of the container 2 can be reduced.

[0029] In addition, the container 2 has a main chamber 23 and an auxiliary chamber 24 with a smaller volume than the main chamber 23 inside the container 2, and the protector 8 defines a space 7 between itself and the outer wall 21 that defines the auxiliary chamber 24, so that the recess 22 can be positioned efficiently.

[0030] Furthermore, since the protector 8 has a bent or curved portion 81 in a cross section perpendicular to the pipes 41 and 61, a sufficient space can be defined between the outer wall 21 of the container 2 and the protector 8.

[0031] Furthermore, since the container 2 has a rectangular cross section and the recesses 22 are provided at the corners of the rectangle, the canister 1 can be made compact.

[0032] Furthermore, since the protector 8 has an outer surface 8a that is flush with the outer wall surface 21b of the container 2, the outer wall surface 21b of the container 2 and the outer surface 8b of the protector 8 can be integrated.

[0033] The present invention is not limited to the above-described embodiments, and includes modifications to the above-described embodiments and appropriate combinations of these modifications. [Explanation of symbols]

[0034] 1 canister 2 containers 21 Exterior Wall 21a Exterior wall defining the antechamber 21b Exterior wall surface 22 recess 23 Main room 24 Antechamber 25 Bulkhead 26,27 Perforated plate 28,29 Spring 3. Adsorbent 4 fuel ports 41 Piping connected to fuel port 5 Atmospheric Port 6 Purge Port 61 Piping connected to purge port 7 Space 8 Protector 8a External surface 81 Bending Part

Claims

1. A canister in which an adsorbent is filled in a container provided with a fuel port connected to a fuel tank, an air port open to the atmosphere, and a purge port connected to an intake passage of an engine, a protector is attached to the outer wall of the container, the protector defining a space between the outer wall of the container and the protector; The canister has at least one of pipes connected to the fuel port, the atmospheric port, or the purge port disposed in the space.

2. The container has a recess that is recessed relative to an outer circumferential surface of the container, The canister according to claim 1 , wherein the protector covers the recess.

3. The container has a main chamber and an auxiliary chamber having a smaller volume than the main chamber inside the container, 3. The canister according to claim 2, wherein the protector defines the space between itself and an outer wall that defines the sub-chamber.

4. 3. The canister according to claim 1, wherein the protector has a bent or curved portion in a cross section perpendicular to the pipe.

5. 4. A canister according to claim 2 or 3, wherein the container has a rectangular cross section, and the recess is provided at a corner of the rectangle.

6. 6. The canister according to claim 5, wherein the protector has an outer surface that is flush with an outer wall surface of the container.

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