Cooler box

Abstract

To provide a cooler box that can make assembling easier of a water drainage structure.SOLUTION: A cooler box 1 includes a box body part 3 and a water drainage structure 7. The box body part 3 has a through hole 15 in the lower part of a side wall 13. The water drainage structure 7 has a cylindrical body 21, a blockage part 23, and a locking member 25. The cylindrical body 21 is screwed into the through hole 15. The cylindrical body 21 has a stepped part 21c. The blockage part 23 blocks an open end 21d of the cylindrical body 21. The locking member 25 is disposed on the outer peripheral surface of the cylindrical body 21. The locking member 25 is interposed between the stepped part 21c and the side wall 13. The locking member 25 locks the blockage part 23.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a cooler box. [Background technology]

[0002] The cooler box of Patent Document 1 includes a box body and a drainage structure. The box body has a through-hole for drainage provided in the lower part of the side wall. The drainage structure includes a cylinder that is screwed into the through-hole and a closing body that closes the outer end of the cylinder. The cylinder has an outer end of the cylinder, a pair of flanges that are arranged between the outer end of the cylinder and the side wall, and a pair of notches that are provided circumferentially between the pair of flanges. The pair of flanges are formed integrally with the outer peripheral surface of the cylinder body.

[0003] The closure has a closure flange and a pair of protrusions protruding radially inward from the closure flange. Cam slopes used to engage the pair of protrusions are formed on the side surfaces of each of the pair of flanges facing the side plates of the box body. In this configuration, the pair of protrusions of the closure are axially fitted into the notches between the pair of flanges of the cylindrical body, and then the closure is rotated, whereby the outer end of the cylindrical body is closed by the closure. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 7311391 Summary of the Invention [Problem to be solved by the invention]

[0005] In the conventional drainage structure, when the outer end of the cylinder is closed by the closure, the user rotates the closure knob with their fingers. This closes the outer end of the cylinder with the closure. When the outer end of the cylinder is released from the closure, the user performs the reverse operation.

[0006] Here, manufacturers consider the convenience of the water drainage structure and assemble it so that the position of the closure knob faces a fixed direction when closed, for example, facing up and down in the cooler box of Patent Document 1. Specifically, manufacturers adjust the phase of the notches between a pair of flanges in the cylindrical body so that the position of the closure knob faces a fixed direction when closed. However, when assembling the water drainage structure, it is necessary to constantly adjust the phase of the notches in the cylindrical body, i.e., the posture of the cylindrical body, which reduces the ease of assembly of the water drainage structure.

[0007] An object of the present invention is to provide a cooler box that can improve the assembly efficiency of the water drainage structure. [Means for solving the problem]

[0008] According to a first aspect of the present invention, a cooler box includes a box body and a drainage structure. The box body has a through hole in the lower part of the side wall. The drainage structure includes a cylindrical body, a closing portion, and a locking member. The cylindrical body is screwed into the through hole. The cylindrical body has a stepped portion. The closing portion closes the open end of the cylindrical body. The locking member is disposed on the outer peripheral surface of the cylindrical body. The locking member is sandwiched between the stepped portion and the side wall. The locking member locks the closing portion.

[0009] In the cooler box according to the first aspect of the present invention, the closing part is attached to the cylindrical body via a locking member. With this configuration, the orientation of the locking member can be adjusted when the cylindrical body is screwed into the through-hole, thereby allowing the closing part to be appropriately positioned. In other words, since there is no need to adjust the orientation of the cylindrical body as in the prior art, the assembly of the water drainage structure can be improved.

[0010] With respect to a second aspect of the present invention, the cooler box according to the first aspect may be configured as follows: The closing portion has a cylindrical portion and a protruding portion. The cylindrical portion is disposed radially outward from the cylindrical body. The protruding portion protrudes radially inward from the cylindrical portion.

[0011] The locking member has an annular portion, a flange portion, and a cutout portion. The annular portion is disposed on the outer peripheral surface of the cylindrical body. The annular portion is sandwiched between the step portion and the side wall. The flange portion protrudes radially outward from the annular portion. The cutout portion guides the protrusion toward the side wall. The cutout portion is provided adjacent to the flange portion in the circumferential direction. By rotation of the closure portion, the protrusion moves circumferentially between the flange portion and the side wall and is locked to the flange portion.

[0012] In the cooler box according to the second aspect of the present invention, the protruding portion of the closing portion is locked to the flange portion of the locking member, so that the closing portion can be easily attached to and detached from the locking member.

[0013] With respect to a third aspect of the present invention, the cooler box according to the second aspect may be configured as follows: the flange portion has an annular surface. The annular surface is provided on the side wall side. The protrusion contacts the annular surface. The annular surface is formed such that the protrusion approaches the side wall upon rotation of the closing portion.

[0014] In the cooler box according to the third aspect of the present invention, by forming the annular surface as described above, the open end of the cylindrical body can be reliably closed by the closing portion.

[0015] With respect to a fourth aspect of the present invention, the cooler box according to the second or third aspect may be configured as follows: The closing portion has a knob member, a locking member, and a sealing member. The locking member includes a disc portion, a tubular portion, and the above-mentioned protrusion. The knob member is attached to the disc portion. The tubular portion is provided on the outer periphery of the disc portion. The sealing member is provided on the disc portion and abuts against the open end of the tubular body.

[0016] In the cooler box according to the fourth aspect of the present invention, the closing portion is formed by a tab member, a locked member, and a sealing member, thereby improving the maintainability of the drainage structure.

[0017] With respect to a fifth aspect of the present invention, the cooler box according to the first or second aspect may be configured as follows: The water drainage structure further includes a cover member. The cover member is attached to the side wall so as to be swingable. The cover member is provided on the closing portion.

[0018] In the cooler box according to the fifth aspect of the present invention, the cover member is attached to the side wall of the box body so as to be able to swing, and the cover member is provided with a closing part. With this configuration, when the closing part comes off the open end of the cylinder, the cover member can hold the closing part to the side wall of the box body. In other words, it is possible to prevent the closing part from falling off.

[0019] With regard to a sixth aspect of the present invention, the cooler box according to the first or second aspect may be configured as follows: A water drip receiving member is provided on the side wall. The water drip receiving member is disposed between the side wall and the locking member. A positioning protrusion is provided on the surface of the water drip receiving member. A positioning recess that engages with the positioning protrusion is provided on the surface of the locking member facing the side wall.

[0020] In the cooler box relating to the sixth aspect of the present invention, the position of the locking member can be uniquely fixed by the positioning protrusion of the water droplet receiving member and the positioning recess of the locking member, so that the locking member can be positioned on the side wall via the water droplet receiving member without using a jig or the like during assembly. [Effects of the Invention]

[0021] According to the present invention, the assembly of the water drainage structure in a cooler box can be improved. [Brief explanation of the drawings]

[0022] [Figure 1] FIG. [Figure 2] Partially enlarged cross-sectional view of the drainage structure. [Figure 3] FIG. [Figure 4] FIG. 4 is an exploded perspective view of FIG. 3 as seen from the opposite side. [Figure 5] FIG. 10 is a perspective view of a locking member of the closing portion in the drainage structure. [Figure 6] FIG. 10 is a perspective view of a locking member of the closing portion in the drainage structure. DETAILED DESCRIPTION OF THE INVENTION

[0023] As shown in FIG. 1, a cooler box 1 according to one embodiment of the present invention has a box body 3, a lid member 5, and a drainage structure 7. The box body 3 is formed in a rectangular box shape. The box body 3 has a bottom 11, side walls 13, and through holes 15 (see FIG. 2). In this embodiment, the bottom 11 is formed in a rectangular shape. The bottom 11 may have other shapes.

[0024] As shown in Figures 1 and 2, the side wall 13 is integrally formed with the outer periphery of the bottom 11. The side wall 13 surrounds the outer periphery of the bottom 11 and extends upward from the outer periphery of the bottom 11. The through hole 15 is provided in the lower part of the side wall 13. The through hole 15 penetrates the side wall 13. An internal thread portion 15a is formed on the inner periphery of the through hole 15.

[0025] As shown in FIG. 2, a water drip receiving member 28 is provided on the side wall 13. The water drip receiving member 28 is fixed to the side wall 13 by a screw member 32. The water drip receiving member 28 is disposed between the side wall 13 and a locking member 25, which will be described later. As shown in FIGS. 2, 3, and 4, the water drip receiving member 28 is provided with a hole 28a. As shown in FIG. 2, the hole 28a is disposed adjacent to the through hole 15 of the box body 3. The inner diameter of the hole 28a is larger than the outer diameter of the through hole 15. The inner diameter of the hole 28a is larger than the outer diameter of the female thread portion 15a. As shown in FIG. 4, a plurality of positioning protrusions 28b are provided on the surface of the drip tray member 28. In this embodiment, two positioning protrusions 28b are provided on the outer surface of the drip tray member 28. Each positioning protrusion 28b engages with a positioning recess 25a (see FIG. 3) provided on the surface of the locking member 25 facing the side wall 13. The drip tray member 28 may also be considered an element included in the drainage structure 7. As shown in FIG. 1, the cover member 5 is formed separately from the box main body 3. The cover member 5 covers the opening formed by the upper end of the side wall 13.

[0026] As shown in Figures 2 and 3, the water drainage structure 7 has a tubular body 21, a blocking portion 23, and a locking member 25. The water drainage structure 7 further has a cover member 27. As shown in Figure 2, the tubular body 21 is attached to the through hole 15. Specifically, the tubular body 21 is threaded into the through hole 15. More specifically, as shown in Figures 2 and 3, the tubular body 21 has a tubular main body 21a, an externally threaded portion 21b, and a stepped portion 21c. The tubular main body 21a is formed in a tubular shape. The externally threaded portion 21b is formed on the outer peripheral surface of the tubular main body 21a. As shown in Figure 2, the externally threaded portion 21b is threaded into the internally threaded portion 15a of the through hole 15.

[0027] 2 and 3, the cylindrical body 21 includes a central axis C1. The central axis C1 of the cylindrical body 21 is concentric with the central axis C2 of the through-hole 15. In the following description, the direction in which the central axis C1 of the cylindrical body 21 extends will be referred to as the axial direction. The direction perpendicular to the central axis C1 of the cylindrical body 21 and away from the central axis C1 of the cylindrical body 21 will be referred to as the radial direction. The direction around the central axis C1 of the cylindrical body 21 will be referred to as the circumferential direction or the rotational direction.

[0028] Closing portion 23 is used to close open end 21d of cylindrical body 21. As shown in FIGS. 2 and 3, closing portion 23 has a knob member 31, a locked member 33, and a sealing member 35. Tab member 31 is a member that is operated by a user when opening or closing open end 21d of cylindrical body 21. Tab member 31 is attached to locked member 33. Specifically, tab member 31 is attached to locked member 33 so as to be rotatable integrally therewith.

[0029] As shown in FIG. 3, the knob member 31 has a knob main body 61, multiple engagement recesses 62, and a screw receiving portion 63. The knob main body 61 is formed in a cylindrical shape with a bottom. The knob main body 61 has a bottom portion 61a and a first cylindrical portion 61b. The bottom portion 61a is formed in a substantially disk shape. The first cylindrical portion 61b is formed in a cylindrical shape so as to surround the outer periphery of the bottom portion 61a. The multiple engagement recesses 62 extend in the axial direction on the inner circumferential surface of the first cylindrical portion 61b. The multiple engagement recesses 62 are arranged at intervals from one another in the circumferential direction. The screw receiving portion 63 is provided on the bottom portion 61a and extends in the axial direction.

[0030] 2 and 5, the locked member 33 has a disk portion 41, a second cylindrical portion 43, and a pair of protrusions 45. As shown in Fig. 2, the disk portion 41 is disposed opposite the open end 21d of the cylindrical body 21. In detail, when the closing portion 23 is in a closing position that closes the open end 21d of the cylindrical body 21, the disk portion 41 is disposed opposite the open end 21d of the cylindrical body 21.

[0031] More specifically, as shown in FIGS. 2 and 5, the disc portion 41 has a disc main body 41a, a flange portion 41b, and a storage recess 41c. The disc main body 41a is formed in a disc shape. The disc main body 41a is disposed radially inside the first cylindrical portion 61b of the knob member 31. The flange portion 41b protrudes radially outward from the outer circumferential surface of the disc main body 41a. The flange portion 41b is formed in an annular shape. The storage recess 41c is formed by the inner circumferential surface of the flange portion 41b and the side surface of the disc main body 41a. As shown in FIG. 2, the bottom of the storage recess 41c is disposed opposite the open end 21d of the cylindrical body 21.

[0032] As shown in Figure 4, the disc portion 41 further has a plurality of engaging protrusions 41d. The plurality of engaging protrusions 41d protrude radially from the disc main body 41a. The plurality of engaging protrusions 41d are respectively arranged in a plurality of engaging recesses 62 (see Figure 3) of the knob member 31. This allows the locked member 33 to rotate integrally with the knob member 31. In this state, the knob member 31 is attached to the locked member 33 by screwing the connecting screw 30 (see Figure 2) into the screw receiving portion 63.

[0033] 2 and 5, the second cylindrical portion 43 is provided integrally with the outer periphery of the disc portion 41. More specifically, the second cylindrical portion 43 is provided integrally with the outer periphery of the flange portion 41b of the disc portion 41. As shown in FIG. 2, the second cylindrical portion 43 is disposed radially outward of the cylindrical body 21. More specifically, when the closing portion 23 is positioned so as to close the open end 21d of the cylindrical body 21, the second cylindrical portion 43 is disposed radially outward of the cylindrical body 21. In this state, the central axis of the second cylindrical portion 43 is concentric with the central axis C1 of the cylindrical body 21.

[0034] As shown in FIGS. 2 and 5, the pair of protrusions 45 each protrude radially inward from the inner circumferential surface of the second cylindrical portion 43. As shown in FIG. 3, the pair of protrusions 45 are provided at equal intervals in the circumferential direction on the inner circumferential surface of the second cylindrical portion 43. As shown in FIG. 2, the sealing member 35 is provided on the disc portion 41. More specifically, the sealing member 35 is disposed in the storage recess 41c of the disc portion 41 and is held by a plurality of holding protrusions 44 (see FIG. 5) on the locked member 33. As shown in FIG. 2, when the closing portion 23 is positioned to close the open end 21d of the cylindrical body 21, the sealing member 35 abuts against the open end 21d of the cylindrical body 21.

[0035] 2, the locking member 25 locks the closing portion 23. The locking member 25 is disposed on the outer peripheral surface of the cylindrical body 21. The locking member 25 is sandwiched between the step portion 21c of the cylindrical body 21 and the side wall 13 of the box body 3. In this embodiment, the locking member 25 is sandwiched between the step portion 21c of the cylindrical body 21 and the side wall 13 of the box body 3 via the water droplet receiving member 28.

[0036] 2 and 3, the locking member 25 has an annular portion 51, a pair of flange portions 53, and a pair of cutout portions 55. The annular portion 51 is disposed on the outer peripheral surface of the cylindrical body 21. As shown in FIG. 2, the annular portion 51 is sandwiched between the wall surface of the step portion 21c of the cylindrical body 21 and the side wall 13 of the box main body 3. In this embodiment, the annular portion 51 is sandwiched between the wall surface of the step portion 21c of the cylindrical body 21 and the side wall 13 of the box main body 3 via the water droplet receiving member 28.

[0037] 2 to 4 and 6, the annular portion 51 has an annular main body 51a and an annular protrusion 51b. The annular main body 51a is formed in an annular shape. The annular protrusion 51b protrudes from the inner peripheral surface of the annular main body 51a and extends circumferentially along the inner peripheral surface of the annular main body 51a. As shown in FIG. 2, the annular protrusion 51b is disposed axially between the wall surface of the stepped portion 21c and the water droplet receiving member 28. The water droplet receiving member 28 is disposed axially between the annular protrusion 51b and the outer surface of the side wall 13. In this state, the annular protrusion 51b is sandwiched between the wall surface of the stepped portion 21c and the side wall 13, with the water droplet receiving member 28 interposed therebetween.

[0038] As shown in FIGS. 2 to 4 and 6, the pair of flange portions 53 each protrude radially outward from the outer circumferential surface of the annular portion 51. As shown in FIG. 6, the pair of flange portions 53 are arranged circumferentially spaced apart on the outer circumferential surface of the annular portion 51. Each of the pair of flange portions 53 has a pair of annular surfaces 54. The pair of annular surfaces 54 are provided on the side wall 13 side. As shown in FIG. 2, the pair of annular surfaces 54 come into contact with each of the pair of protruding portions 45 of the locked member 33.

[0039] 6, each of the pair of annular surfaces 54 is formed so that rotation of the closing portion 23 brings the pair of protrusions 45 closer to the side wall 13. Each annular surface 54 has an inclined surface 54a and a positioning surface 54b. The inclined surface 54a is formed by gradually increasing the axial thickness of the flange portion 53 in the circumferential direction.

[0040] 6, when the inclined surface 54a is viewed from the inside of the cooler box 1, the axial thickness of the flange portion 53 gradually increases from the cutout portion 55 in the counterclockwise circumferential direction. As a result, when the blocking portion 23 is rotated in the clockwise circumferential direction, each protrusion 45 gradually approaches the side wall 13.

[0041] As shown in Fig. 6, when viewed from the inside of the cooler box 1, the positioning surface 54b extends counterclockwise circumferentially from the inclined surface 54a. A recess 54c is formed in the positioning surface 54b. As shown in Fig. 2, the protruding portion 45a of the protruding portion 45 engages with the recess 54c. The protruding portion 45a of the protruding portion 45 is provided on the side surface of the protruding portion 45 that faces the annular surface 54.

[0042] 6, each of the pair of cutout portions 55 is provided between the pair of flange portions 53 in the circumferential direction. The pair of cutout portions 55 guide the pair of protrusions 45 toward the side wall 13. When the closing portion 23 rotates in the clockwise circumferential direction as viewed from the outside of the cooler box 1, the pair of protrusions 45 move separately in the clockwise circumferential direction along the pair of inclined surfaces 54a between the pair of flange portions 53 and the side wall 13 (water drip receiving member 28).

[0043] As shown in Fig. 2, when the pair of protrusions 45 reach the positioning surface 54b, the protrusions 45a of each protrusion 45 engage with the recesses 54c of the flange portions 53. This positions the protrusions 45 relative to the flange portions 53. This state is the closed state. Here, Fig. 2 is a cross-sectional view of the water drainage structure 7 in the closed state. Figs. 3 and 4 are exploded perspective views of the water drainage structure 7 in an openable state in which it can be opened.

[0044] As shown in FIG. 2 , the cover member 27 is attached to the side wall 13 so as to be able to swing. More specifically, the cover member 27 is attached to the drip tray 28 so as to be able to swing via a connecting structure 29. The connecting structure 29 includes a biasing member such as a torsion coil spring, as in the prior art. The biasing member is disposed between the cover member 27 and the drip tray 28. The biasing member biases the cover member 27 in a direction away from the drip tray 28. Thus, in this embodiment, the cover member 27 is attached to the side wall 13 so as to be able to swing via the drip tray 28.

[0045] As shown in FIG. 2 , the cover member 27 is provided with the closing portion 23 via a connecting screw 30. The cover member 27 is disposed between the knob member 31 of the closing portion 23 and the locked member 33 of the closing portion 23, and holds the knob member 31 of the closing portion 23 and the locked member 33 of the closing portion 23. In this state, both the knob member 31 of the closing portion 23 and the locked member 33 of the closing portion 23 rotate relative to the cover member 27.

[0046] When the cover member 27 swings relative to the water droplet receiving member 28, the closing portion 23 also swings relative to the side wall 13 together with the cover member 27. In detail, when the cover portion swings relative to the water droplet receiving member 28, the knob member 31 of the closing portion 23 and the locked member 33 of the closing portion 23 also swing relative to the side wall 13 together with the cover member 27.

[0047] The drainage structure 7 having the above configuration is assembled as follows. First, the water drip receiving member 28 is fixed to the side wall 13. Next, the locking member 25 is placed on the outer circumferential surface of the cylindrical body 21, adjacent to the stepped portion 21c of the cylindrical body 21. In this state, the cylindrical body 21 is inserted into the hole 28a of the water drip receiving member 28 and screwed into the through-hole 15 of the side wall 13.

[0048] Next, the knob member 31 of the closing portion 23 is attached to the locked member 33 of the closing portion 23 with the cover member 27 sandwiched between them. The cover member 27 is connected to the water drip receiving member 28 by a connecting structure 29. Here, by passing the protrusion 45 of the locked member 33 through the cutout portion 55 of the locking member 25 toward the side wall 13 and rotating the knob member 31, the open end 21d of the cylindrical body 21 is sealed by the sealing member 35 of the closing portion 23. In this manner, the water drainage structure 7 is assembled.

[0049] The drainage structure 7 operates as follows. First, in the closed state shown in Fig. 2, the open end 21d of the cylindrical body 21 is closed by the sealing member 35 of the closing portion 23. Furthermore, the protrusion 45 of the locked member 33 in the closing portion 23 is positioned by the positioning surface 54b of the flange portion 53 of the locking member 25. In this state, when the knob member 31 of the closing portion 23 rotates clockwise, the protrusion 45 of the locked member 33 moves along the annular surface 54 of the flange portion 53 of the locking member 25.

[0050] At this time, the protruding portion 45 of the locked member 33 gradually moves in the axial direction away from the side wall 13. That is, the closing portion 23 gradually moves in the axial direction away from the side wall 13. As a result, the sealing member 35 of the closing portion 23 gradually loosens the seal on the open end 21d of the cylindrical body 21.

[0051] Next, when the protrusion 45 of the interlocking member 33 reaches the notch 55 of the interlocking member 25, and the knob member 31 of the blocking portion 23 or the cover member 27 is pulled up, the protrusion 45 of the interlocking member 33 passes through the notch 55 of the interlocking member 25, and the blocking portion 23 and the cover member 27 swing upward relative to the side wall 13.

[0052] As a result, the sealing member 35 of the blocking portion 23 moves away from the open end 21d of the cylindrical body 21, and the open end 21d of the cylindrical body 21 is opened. Note that the open end 21d of the cylindrical body 21 can be sealed by performing the opposite operation to the above, so a description of the sealing operation of the drainage structure 7 will be omitted.

[0053] The cooler box 1 equipped with the above-described water drainage structure 7 has the following features. In the cooler box 1, the closing portion 23 is attached to the cylindrical body 21 via a locking member 25. With this configuration, the orientation of the closing portion 23 can be suitably set by adjusting the orientation of the locking member 25 when the cylindrical body 21 is screwed into the through-hole 15. In other words, the water drainage structure 7 can be assembled without adjusting the orientation of the cylindrical body 21.

[0054] In the cooler box 1, by engaging the protrusion 45 of the closing portion 23 with the flange portion 53 of the locking member 25, the closing portion 23 can be easily attached to and detached from the locking member 25. In the cooler box, by forming the annular surface 54 as described above, the open end 21d of the cylindrical body 21 can be reliably closed by the closing portion 23. In the cooler box, by configuring the closing portion 23 with the knob member 31, the locked member 33, and the sealing member 35, the maintainability of the water drainage structure 7 can be improved.

[0055] In the cooler box 1, the cover member 27 is attached to the side wall 13 of the box body 3 so as to be able to swing, and the cover member 27 is provided with the closing portion 23. With this configuration, when the closing portion 23 is detached from the open end 21d of the cylindrical body 21, the closing portion 23 can be held on the side wall 13 of the box body 3 via the cover member 27. In other words, the closing portion 23 can be prevented from falling off.

[0056] In the cooler box 1, the position of the locking member 25 can be uniquely fixed by the positioning protrusion 28b of the water droplet receiving member 28 and the positioning recess 25a of the locking member 25, so that the locking member 25 can be positioned relative to the side wall 13 via the water droplet receiving member 28 without using a jig or the like during assembly. [Explanation of symbols]

[0057] 1 cooler box 3 Box body 7. Water drainage structure 13 Side wall 15 through holes 21 Cylinder 21c Step 21d Open end 23 Occlusion 25 Locking member 25a Positioning recess 27 Cover member 28 Water drip tray 28b Positioning protrusion 31 Knob member 33 Locked member 35 Sealing member 41 Disc 43 Cylindrical part 45 Protrusion 51 Circular section 53 Flange 54 Annular Surface 55 Notch

Claims

1. a box body having a through hole in a lower portion of a side wall; a drainage structure including: a cylindrical body that is screwed into the through hole and has a stepped portion; a closing portion that closes the open end of the cylindrical body; and a locking member that is arranged on the outer circumferential surface of the cylindrical body and is sandwiched between the stepped portion and the side wall and locks the closing portion; A cooler box equipped with:

2. the blocking portion has a cylindrical portion disposed radially outward of the cylindrical body and a protruding portion protruding radially inward from the cylindrical portion, the locking member has an annular portion that is disposed on the outer peripheral surface of the cylindrical body and is sandwiched between the step portion and the side wall, a flange portion that protrudes radially outward from the annular portion, and a notch portion that is disposed adjacent to the flange portion in the circumferential direction and guides the protrusion toward the side wall, By the rotation of the closing portion, the protruding portion moves in the circumferential direction between the flange portion and the side wall and is engaged with the flange portion. The cooler box according to claim 1.

3. the flange portion has an annular surface that is provided on the side wall side and that comes into contact with the protrusion, the annular surface is formed such that rotation of the closure portion causes the protrusion to approach the side wall; The cooler box according to claim 2.

4. The blocking portion is A knob member; a locked member including a disk portion to which the knob member is attached, the cylindrical portion provided on the outer periphery of the disk portion, and the protrusion; a sealing member provided on the disk portion and abutting against the open end of the cylindrical body, The cooler box according to claim 2 or 3.

5. The water drainage structure further includes a cover member provided with the closing portion and attached to the side wall so as to be swingable. The cooler box according to claim 1 or 2.

6. The side wall is provided with a water droplet receiving member, the drip receiving member is disposed between the side wall and the locking member, A positioning protrusion is provided on the surface of the water droplet receiving member, A positioning recess that engages with the positioning protrusion is provided on a surface of the locking member on the side wall side. The cooler box according to claim 1 or 2.

Images