Canister

Abstract

This prevents accidental cutting of the canister case during canister recycling. [Solution] The canister 10 comprises a canister case 11 having a cylindrical case body 20 with one opening closed and a cover 30 attached to close the other opening, an adsorbent material 13 filled inside the canister case 11, a retaining plate 14 that is movable in the planar direction inside the case body 20 and holds the adsorbent material 13, and a spring 16 interposed between the cover 30 and the retaining plate 14 and biasing the retaining plate 14 in the direction of pressing the adsorbent material 13. The cover 30 has a cylindrical connecting portion 33 that can be cut in a direction perpendicular to the axis between a support plate portion 31 that supports the spring 16 and a connecting portion 32 that is joined to the flange portion 20a of the case body 20. The outer circumferential surface of the case body 20 is provided with a discriminating portion 26 that indicates the cutting area R of the connecting portion 33.

Description

Technical Field

[0001] The technology disclosed in this specification relates to a canister.

Background Art

[0002] Conventionally, for example, the canister described in Patent Document 1 includes a canister case having a cylindrical shape with one opening closed and a cover for closing the other opening attached thereto, an adsorbent filled in the canister case and adsorbing and desorbing evaporated fuel, a holding plate provided movably in the surface direction in the case body and holding the adsorbent, and a spring interposed between the cover and the holding plate and biasing the holding plate in the pressing direction of the adsorbent. The cover has a cylindrical connecting portion between a support plate portion supporting the spring and a joint portion joined to the opening end portion of the case body.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When recycling the canister, it is conceivable to take out the built-in items such as the adsorbent, the holding plate, and the spring by cutting the canister case along a direction orthogonal to the axis. In this case, it is desirable to cut the canister case at an appropriate cutting position, that is, a position crossing the connecting portion of the cover. Then, the end portion of the case body on the cover side can be opened without damaging the built-in items, and the built-in items can be easily taken out. However, since the connecting portion is covered by the case body, there is a risk of accidentally cutting the canister case at a position other than the appropriate cutting position. For example, cutting the spring may cause the scattered cutting pieces and burrs, resulting in poor recyclability of the canister.

[0005] The problem that the technology disclosed herein seeks to solve is to prevent accidental cutting of the canister case during canister recycling. [Means for solving the problem]

[0006] To solve the above problems, the technology disclosed herein employs the following means.

[0007] The first means is a canister comprising: a canister case having a cylindrical case body with one opening closed and a cover attached to close the other opening; an adsorbent filled inside the canister case for adsorbing and desorbing evaporated fuel; a retaining plate provided within the case body so as to be movable in the planar direction and for holding the adsorbent; and a spring interposed between the cover and the retaining plate for biasing the retaining plate in the direction of pressing the adsorbent, wherein the cover has a cylindrical connecting portion that can be cut in a direction perpendicular to the axis between a support plate portion that supports the spring and a connecting portion joined to the open end of the case body, and the outer circumferential surface of the case body is provided with a discriminant portion indicating the cutting area of ​​the connecting portion.

[0008] According to the first method, a discriminant portion provided on the outer circumferential surface of the case body indicates the cutting area of ​​the connecting portion. Therefore, by cutting the canister case along a direction perpendicular to the axis in the cutting area, accidental cutting of the canister case during canister recycling can be prevented. As a result, by removing the support plate portion, the cover-side end of the case body can be opened without damaging internal components such as suction material, retaining plates, and springs, allowing for easy removal of the internal components. Ultimately, this improves the recyclability of the canister.

[0009] The second means is a canister of the first means, wherein the discriminant portion is a convex or concave portion indicating the boundary of the cutting region.

[0010] According to the second method, the boundary of the cutting region can be indicated by a convex or concave portion which is a discriminative portion.

[0011] The third means is a canister of the first means, wherein the discriminant portion has a surface roughness different from the surface roughness of the area outside the cutting region.

[0012] According to the third method, the cutting region can be indicated by a discriminating section having a surface roughness different from that of the areas outside the cutting region.

[0013] The fourth means is a canister of the second or third means, wherein the discriminant portion is formed continuously or intermittently in the circumferential direction of the case body.

[0014] According to the fourth method, the cutting region can be indicated by discrimination portions formed continuously or intermittently in the circumferential direction on the outer surface of the case body. [Effects of the Invention]

[0015] According to the technology disclosed herein, accidental cutting of the canister case during canister recycling can be prevented. [Brief explanation of the drawing]

[0016] [Figure 1] This is a front view showing a canister according to Embodiment 1, partially cut away. [Figure 2] This is a front view showing a magnified portion of the canister. [Figure 3] This is a front view showing a canister according to Embodiment 2. [Figure 4] This is a front view showing a magnified portion of the canister. [Modes for carrying out the invention]

[0017] Embodiments for carrying out the technology disclosed herein will be described below with reference to the drawings.

[0018] [Embodiment 1] FIG. 1 is a front view showing the canister with a part broken away, and FIG. 2 is a front view showing a part of the canister enlarged. For the sake of explanation, after explaining the outline of the canister, the configuration of the main part will be described. Regarding the canister, the up, down, left, and right directions are defined based on the state of FIG. 1, and the front-back direction is defined as the front-back direction of the paper surface in FIG. 1.

[0019] (Outline of Canister) As shown in FIG. 1, the canister 10 includes a resin-made canister case 11. The canister case 11 is formed by attaching a cover 30 for closing the other (lower) opening to a case body 20 having a rectangular tube shape with one (upper) opening closed. The left-right dimension of the case body 20 is larger than the front-back dimension.

[0020] On the upper surface portion of the case body 20, a tank port 22, a purge port 23, and an atmosphere port 24 arranged in the left-right direction are provided. The case body 20 has a partition wall 25 that divides the hollow portion into left and right adsorption chambers. The left adsorption chamber communicates with the tank port 22 and the purge port 23, and the right adsorption chamber communicates with the atmosphere port 24. A gap for communicating the respective adsorption chambers with each other is formed between the partition wall 25 and the cover 30. The tank port 22 communicates with the upper chamber of the fuel tank of the vehicle. The purge port 23 communicates with the intake passage of the internal combustion engine. The atmosphere port 24 is open to the atmosphere.

[0021] Each adsorption chamber is filled with an adsorbent 13 for adsorbing and desorbing the evaporated fuel generated in the fuel tank. The adsorbent 13 is, for example, granular activated carbon. At the opening of each adsorption chamber, a breathable holding plate 14 is provided in a horizontal state so as to be movable in the surface direction (up-down direction). The holding plate 14 holds the adsorbent 13. A breathable sheet-like filter 15 is overlaid on the upper surface of the holding plate 14. A spring 16 is interposed between the holding plate 14 and the cover 30. The spring 16 is a coil spring that biases the holding plate 14 in the pressing direction (upward direction) of the adsorbent 13.

[0022] (Attachment structure between case body 20 and cover 30) An annular flange portion 20a protruding radially outward is formed at the lower end portion of the case body 20. The cover 30 has a support plate portion 31, a joining portion 32, and a connecting portion 33. The support plate portion 31 is formed in a rectangular plate shape and supports both left and right springs 16. The joining portion 32 is joined to the flange portion 20a of the case body 20 by welding such as vibration welding. The connecting portion 33 is in a square tube shape and can be cut in a direction (radial direction) orthogonal to the axis. An annular gap is formed between the case body 20 and the connecting portion 33 to avoid contact during vibration welding. The cover 30 has a plurality of reinforcing ribs 34 protruding from the lower surface of the support plate portion 31. The reinforcing ribs 34 are continuous with the connecting portion 33 and / or intersecting reinforcing ribs 34. The flange portion 20a corresponds to the "open end portion" referred to in this specification.

[0023] When recycling the canister 10, in order to easily remove the built-in items such as the adsorbent 13, the holding plate 14, and the spring 16 without damaging them, it is conceivable to cut the canister case 11 at an appropriate cutting position, that is, at a position crossing the connecting portion 33 of the cover 30. However, in the conventional ones, there was no discrimination portion indicating the appropriate cutting position of the canister case 11, so there was a risk of accidentally cutting the canister case 11. This embodiment has the following characteristic configuration to prevent accidental cutting of the canister case 11.

[0024] (Characteristic configuration of Embodiment 1) A discrimination portion 26 indicating the cutting region R of the connecting portion 33 of the cover 30 is provided on the outer peripheral surface of the case body 20. The cutting region R is a region that crosses the connecting portion 33 of the cover 30 while avoiding the flange portion 20a of the case body 20. The discrimination portion 26 is a linear convex portion 26 (given the same reference numeral as the discrimination portion) indicating the boundary of the cutting region R (see FIG. 2). The region corresponding to the cutting region R is between the convex portion 26 and the flange portion 20a of the case body 20. The convex portion 26 is continuously formed in the circumferential direction of the case body 20.

[0025] (Advantages of the distinctive configuration of Embodiment 1) According to this embodiment, the cutting region R of the connecting portion 33 is indicated by the protrusion 26, which is a discriminant portion provided on the outer circumferential surface of the case body 20. Therefore, by cutting the canister case 11 in the cutting region R along a direction perpendicular to the axis, accidental cutting of the canister case 11 during recycling of the canister 10 can be prevented. As a result, by removing the support plate portion 31, the cover-side end of the case body 20 can be opened without damaging the internal components such as the suction material 13, retaining plate 14, and spring 16, so that the internal components can be easily removed without damage. In turn, the recyclability of the canister 10 can be improved.

[0026] Furthermore, the protrusion 26, which is the discriminant portion 26, can indicate the boundary of the cutting region R.

[0027] Furthermore, the protrusions 26 formed continuously in the circumferential direction on the outer surface of the case body 20 can indicate the cutting region R.

[0028] Furthermore, the protrusion 26, which is the discriminant portion 26, may be replaced with a groove-shaped recess. The protrusion 26 may also be formed intermittently in the circumferential direction on the outer surface of the case body 20.

[0029] [Embodiment 2] This embodiment is a modification of the discrimination unit 26 of Embodiment 1. Therefore, the modified parts will be described, and the same reference numerals will be used for parts identical to those in Embodiment 1, and redundant descriptions will be omitted. Figure 3 is a front view showing the canister 10, and Figure 4 is an enlarged front view showing a part of the canister 10.

[0030] As shown in Figures 3 and 4, the discrimination section 126 of this embodiment has a surface roughness different from the surface roughness of the areas other than the cutting region R. Specifically, the discrimination section 126 has a surface roughness greater than the surface roughness of the areas other than the cutting region R, i.e., it has fine irregularities. The discrimination section 126 is formed continuously in the circumferential direction of the case body 20. The discrimination section 126 may be molded simultaneously during resin molding of the case body 20, or it may be formed by surface treatment.

[0031] (Advantages of Embodiment 2) This embodiment also provides the same effects and benefits as Embodiment 1.

[0032] Furthermore, the cutting region R can be indicated by the discrimination unit 126, which has a surface roughness different from that of the surface roughness outside the cutting region R.

[0033] Furthermore, the discriminant portion 126, which is continuously formed in the circumferential direction on the outer surface of the case body 20, can indicate the cutting region R.

[0034] Furthermore, the discrimination portion 126 may have a surface roughness smaller than the surface roughness of the area other than the cutting region R. Also, the discrimination portion 126 may be formed intermittently in the circumferential direction on the outer surface of the case body 20.

[0035] [Other embodiments] The technology disclosed herein is not limited to the embodiments described above and can be implemented in various other forms. For example, the cutting region R may be set to an area suitable for cutting depending on the shape of the case body 20 and the cover 30. For example, if the case body 20 does not have a flange portion 20a, the area crossing the connecting portion 33 of the cover 30 may be used as the cutting region R. [Explanation of symbols]

[0036] 10 Canister 11 Canister Cases 13 Adsorbent 14 Retaining plate 16 Spring 20 Case body 20a Flange section (open end) 26. Discrimination section (protruding section) 30 Cover 31 Support plate part 32 Joint 33 Connecting part 126 Discrimination part R cutting area

Claims

1. A canister case having a cylindrical case body with one opening closed and a cover attached to close the other opening, An adsorbent that is filled inside the canister case and adsorbs and desorbs evaporated fuel, A retaining plate is provided within the case body so as to be movable in the planar direction and for holding the adsorbent material, A spring interposed between the cover and the retaining plate and biasing the retaining plate in the direction of pressing the adsorbent, It is equipped with, The cover is a canister having a cylindrical connecting portion that can be cut in a direction perpendicular to the axis between a support plate portion that supports the spring and a connecting portion that is joined to the open end of the case body, A canister in which a discriminant portion indicating the cutting area of ​​the connecting portion is provided on the outer circumferential surface of the case body.

2. A canister according to claim 1, The discriminant portion is a convex or concave portion indicating the boundary of the cutting region, in a canister.

3. A canister according to claim 1, The discriminant part is a canister having a surface roughness different from the surface roughness of the area outside the cutting region.

4. A canister according to claim 2 or 3, The discriminant portion is formed continuously or intermittently in the circumferential direction of the case body of the canister.

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