JP5302155B2 - Dehumidifier container - Google Patents

Description

  The present invention relates to a container for a dehumidifier used in a storage space such as a closet, a chest, a clog box, and other storage spaces by absorbing moisture in the air with a deliquescent dehumidifying agent to lower the humidity of the space and keeping the humidity low.

  The dehumidifier contains a deliquescent dehumidifying agent in a container body having an upper surface opening. The upper surface opening is closed by a moisture-permeable and water-impermeable sheet (hereinafter simply referred to as “moisture-permeable sheet”) attached to a flat opening edge (flange) provided at the periphery of the upper surface. A sealing sheet (moisture-proof sheet) is detachably attached on the wet sheet (see, for example, Patent Document 1 and Patent Document 2).

By the way, the container body is formed by injection molding using a synthetic resin material such as polyethylene and polypropylene, and has a flat opening edge (flange part) to which a moisture permeable sheet is attached at the periphery of the upper surface opening. ing. In addition, a container (eye plate) having a number of dripping holes is placed in the middle and high parts inside the container, so that the upper space and the lower space are partitioned, and the deliquescent dehumidifying agent is accommodated in the upper space, and the lower space is The deliquescent liquid of the dehumidifying agent is formed so as to be dropped from the dropping hole of the tray and stored.
Moisture permeable sheets allow moisture and air to pass through, but not water. For example, polyester resin, polyolefin resin, polyamide resin, polyvinyl chloride resin or the like is processed with micropores, and is attached to the flat opening edge of the upper surface opening mainly by heat welding (heat sealing).
The sealing sheet is impermeable to moisture, air and water. For example, it consists of an aluminum sheet or a gas barrier film such as polypropylene, and is detachably attached to the surface of the moisture-permeable sheet, and can be easily removed from the surface of the moisture-permeable sheet when used by the purchaser. Can be done.

Japanese Patent No. 3290106 (see paragraph number 0016 and FIGS. 1 and 10) JP 2001-239126 A (see paragraph numbers 0014 to 0016 and FIGS. 1 and 2)

However, in the prior art described in Patent Document 1 and Patent Document 2, the thermal welding of the moisture permeable sheet to the flat opening edge of the upper surface opening of the container body is performed on the entire edge width of the flat opening edge. (See FIG. 10 of Patent Document 1 and FIG. 2 of Patent Document 2).
Therefore, in the prior art, it is necessary to apply heat to the entire edge width of the opening edge and heat-weld the moisture-permeable sheet to the opening edge. It was an inviting factor.
That is, the electricity cost per unit is not so large, but for example, a dehumidifier manufactured on a production line at a unit of 100,000 per day requires a considerable amount of electricity per day. It was a factor that caused the cost to rise.
For example, in the case where the container body is made of polypropylene and the moisture-permeable sheet is made of polyester resin, in the conventional technique, the opening edge of the upper surface opening of the container body (dehumidifier) is pressed in a plane. The heater temperature for melting the surface of the opening edge together with the moisture permeable sheet required 240 ° C.

In addition, the container peripheral wall of the container body of this type of dehumidifier has sufficient rigidity so as not to be damaged during transportation, display in a store, and during use, but not so much strength (hardness). . That is, since the dehumidifier is a disposable type that is disposed of after use, in order to keep the price low, the peripheral wall of the container is formed with a thin wall thickness that does not break during handling.
Therefore, when the container is grabbed when the consumer picks up the product from the display shelf and checks the product or when the sealing sheet is peeled off from the moisture-permeable sheet, both the long side walls are placed in the container. Because it has a structure that is easily deformed inside and outside, such as dented inside the body and bulging outside, a gap is likely to form between both long side wall parts and the peripheral edge of the saucer. There is a risk that the deliquescent dehumidifying agent may fall into the lower space.

  Furthermore, the container body has a cylindrical shape that is difficult to adjust to the hand when grasped with one hand, such as a substantially oval shape or a substantially rectangular shape, as the transverse plane shape of the container peripheral wall from the top opening to the container bottom. Therefore, when the consumer picks up the product from the display shelf of the store and confirms the product, it is difficult to grasp and unstable, and there is a risk of slipping off the hand.

  Therefore, the present invention was devised to solve the above-described problems, and enables the heat-permeable welding of the moisture-permeable sheet with a small amount of heat, and imparts a peripheral wall shape (structure) in which deformation of the container peripheral wall is difficult to occur. Another object of the present invention is to provide a container for a dehumidifier that is improved in that the peripheral wall of the container can be firmly grasped.

In order to solve the above-described problems, the present invention is a dehumidifier container in which a deliquescent hygroscopic material is accommodated in a container body having an upper surface opening, and the upper surface opening is at least blocked by a moisture-permeable and water-impermeable sheet. A sheet welding protrusion that is continuous along the opening shape at the opening edge of the upper surface opening of the container body, and the sheet welding protrusion is spaced apart in the edge width direction of the opening edge. It is characterized by projecting in two rows .

Here, the container main body is formed in a substantially rectangular shape in plan view, and the range extending from the upper surface opening to the container bottom wall on one of the long side walls of the peripheral wall of the container. And an inwardly concave wall portion recessed inside the container main body in a plan view with a desired recess width, and the other side of the long side wall portion from the top opening to the container bottom A wall extending to the wall and having an outwardly convex wall projecting outwardly from the container main body in a plan view with a concave width corresponding to the inwardly concave wall, Inwardly bent portions formed on both concave sides of the inwardly concave wall portion, outwardly bent portions formed on both convex sides of the outwardly convex wall portion, and both short side wall portions of the container peripheral wall It is preferable to adopt a configuration in which each is connected continuously via a curved wall portion.
In this case, when the container peripheral wall of the container main body is grasped with one hand, a thumb is put on a step portion (dent) between the inwardly concave wall portion and the inwardly bent portion, and the inwardly bent portion A container peripheral wall having a planar view shape on which the index finger, the middle finger, the ring finger, and the little finger can be applied over the outwardly projecting wall portion provided continuously through the curved wall portion and the short side wall portion. That is, it can be set as the container surrounding wall of the surrounding wall shape which is easy to adjust to a hand when grasping.

  The container body includes a plurality of reinforcing ribs extending to substantially midway in the height direction of the container main body at important points on the inner side of the container peripheral wall of the container main body. It is preferable that a notch portion is provided in which a peripheral edge portion of the tray that is included so as to be partitioned into the lower space side is detachably locked.

  According to such a configuration, when attaching the moisture-permeable and water-impermeable sheet to the upper surface opening of the container body by heat welding, heat is applied to the sheet welding convex portion provided at the opening edge of the upper surface opening, The moisture-permeable and water-permeable sheet can be attached to the upper surface opening by thermal welding with the sheet welding convex portion. That is, in contrast to the conventional surface welding, it is possible to perform heat welding with a low amount of heat by linear welding, and the unit price can be suppressed.

Further, both long side wall portions of the container peripheral wall of the container main body that has a substantially rectangular shape in plan view are strengthened by the inwardly bent portion and the outwardly bent portion that extend from the upper surface opening to the container bottom wall. . Thereby, internal and external deformations, such as both long side wall parts being dented inside the container main body, and swelling outside, can be suppressed.
In addition, the inwardly bent portion and the outwardly bent portion are a locking portion that prevents the inner side of the container body from moving in the long side direction (backlash) so as to divide the container body vertically. To serve as.

  In addition, on both short side wall portions of the container peripheral wall of the container body, the inwardly bent portions on both sides of the inwardly concave wall portion and the outwardly bent portions on both sides of the outwardly bent portion are curved wall portions. It is formed in the planar view shape currently connected through. When grasping the container peripheral wall of the container body with one hand, a thumb is put on the stepped part between the inwardly concave wall part and the inwardly bent part, and the inwardly bent part is continuously connected via the curved wall part and the short side wall part. It is possible to hold (hold) firmly with one hand because it has a shape in plan view that is familiar to the hand on which the index finger, middle finger, ring finger, and little finger can be placed so as to cover the outward convex wall portion.

  In addition, the tray that is included so as to divide the inside of the container body into the upper space side and the lower space side is placed on the upper ends of the reinforcing ribs provided at the important points of the container peripheral wall, and at the same time, The peripheral edge is locked to the notch. This prevents the tray from being inadvertently dropped during distribution, display in the store, and during use.

Since the container for the dehumidifier of the present invention is configured as described above, the moisture-permeable and water-impermeable sheet can be thermally welded to the upper surface opening of the container body with a small amount of heat.
Thereby, the unit price of a dehumidifier can be suppressed and it can provide at low cost.

Further, the container peripheral wall of the container body can be firmly grasped with one hand.
Thereby, when a consumer picks up from a display shelf of a store and confirms goods, the problem of slipping off the dehumidifier by mistake can be solved.

Further, both long side wall portions of the peripheral wall of the container are indented and bulged by the inwardly bent portion including the inwardly recessed wall portion and the outwardly bent portion including the outwardly protruded wall portion. To prevent deformation.
Thereby, it can prevent that a deliquescent hygroscopic material falls to lower space. In other words, it is possible to provide a container for a dehumidifier that prevents deterioration of the product image given to the consumer due to the deliquescent hygroscopic material falling in the lower space and the like, and is improved in quality and reliability.

  In addition, it is possible to reliably prevent the tray that is contained so as to divide the inside of the container main body into an upper space and a lower space, and the like.

It is a longitudinal cross-sectional view which shows the dehumidifier to which the container of this invention which concerns on this embodiment is applied. It is a perspective view which shows the dehumidifier. It is a perspective view which shows an example of a container main body. Sectional drawing of the same container main body is shown, (a) is a cross-sectional top view, (b) is a vertical side view. It is a perspective view which shows the state which made the saucer in the same container main body. It is a perspective view which shows an example of a saucer. It is an expanded longitudinal cross-sectional view which shows the latching state of the saucer (periphery edge part) with respect to the reinforcement rib of a container main body. It is a top view of the dehumidifier from which the sealing sheet was peeled off, (a) shows a state in which the drain hole is closed with a closing seal, and (b) shows a state before the closing seal is thermally welded (C) is an expanded sectional view which shows the principal part of (a).

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
FIG. 1 is a longitudinal sectional view showing a dehumidifier to which the container of the present invention according to this embodiment is applied, and FIG. 2 is a perspective view thereof.

≪Dehumidifier configuration≫
As shown in FIGS. 1 and 2, the dehumidifier A includes a container main body 1 having an upper surface opening 3, and an upper space N and a lower space M inside the container main body 1. And a sealing sheet 5 including a moisture-permeable and water-impermeable sheet (hereinafter, simply referred to as “moisture-permeable sheet”) 4 that closes the upper surface opening 3. Further, the dehumidifier A includes a paper lid 6 that protects the moisture-permeable sheet 4 and the sealing sheet 5 detachably attached to the upper surface opening 3.
And the dehumidifier A comprised in this way WHEREIN: When the deliquescent dehumidifier 7 is accommodated in the upper space N in the container main body 1, and a consumer (user) uses, the sealing sheet 5 is moisture-permeable. By removing from the sheet 4, moisture in the air passes through the moisture permeable sheet 4 and flows into the container body 1, and is absorbed by the deliquescent dehumidifying agent 7.
Incidentally, the deliquescent dehumidifying agent 7 is made of, for example, granular calcium chloride, magnesium chloride, potassium acetate, sodium chloride, etc., and absorbs moisture in the air to be changed into a deliquescent solution (aqueous solution). .

≪Container structure≫
FIG. 3 is a perspective view showing the container body, and FIG. 4 is a transverse plan view and a longitudinal side view of the container body.
The container body 1 is formed in a substantially rectangular shape in plan view having the upper surface opening 3 by injection molding using a transparent synthetic resin material such as transparent or translucent.
An opening edge 3a having an outward flatness and a desired edge width is integrally provided on the periphery of the upper surface opening 3, and a seal welding protrusion 8 is formed on the surface of the opening edge 3a in a line along the opening shape. It has.

Moreover, as shown to (a) of FIG.3 and FIG.4, the container main body 1 is one side (on (a) of FIG. 4 (a)) among both the long side wall parts 1a-1 and 1a-2 of the container surrounding wall 1a. The long side wall portion 1a-1 (on the lower side of the paper surface) is provided with an inwardly concave wall portion 9 that is recessed inside the container body 1 in plan view, and the other side (upper side of the paper surface in FIG. 4A). The long side wall portion 1a-2 is provided with an outward convex wall portion 10 that protrudes outward from the container body 1 in plan view.
And as shown to (a) of FIG. 4, the container main body 1 is outward of the both sides of the convex shape of the inwardly bent wall part 10 of the concave shape of the inward concave wall part 9, and the outward convex wall part 10. The bent portion 12 and the short side wall portions 1a-3 and 1a-4 are connected to each other via the curved wall portion 1a-4.
That is, the container peripheral wall 1a has the inward concave wall portions 9 and the outward convex wall portions 10 of both the long side wall portions 1a-1 and 1a-2, the short side wall portions 1a-3, and the four corner corners. It is formed in the planar view shape which consists of wall part 1a-4.

≪Configuration of seal welding ridge≫
As shown in FIG. 3 and FIG. 4B, the seal welding ridges 8 are arranged in two rows at an appropriate interval in the edge width direction of the flat opening edge 3a with an appropriate protrusion width and protrusion height. Projected at
Thereby, the moisture-permeable sheet 4 attached so as to close the upper surface opening 3 can be thermally welded with a small amount of heat (heater temperature).
That is, in the prior art, the surface welding to the entire edge width of the opening edge is improved by the linear welding to the seal welding ridge 8, so that the amount of heat is smaller than that of the conventional surface bonding. The moisture permeable sheet 4 can be thermally welded to the opening edge 3a.
For example, when the container body 1 is made of polypropylene and the moisture permeable sheet 4 is made of polyester resin as a main material, the conventional surface welding requires a heater temperature of 240 ° C. In the linear welding to 8, the moisture permeable sheet 4 can be thermally welded to the opening edge 3 a at a heater temperature 40 ° C. lower than the conventional surface welding, such as 200 ° C. In other words, it was confirmed from experimental results that heat welding can be performed at the same time and at a lower temperature than in the past.

≪Inward concave wall structure≫
As shown in FIGS. 4A and 4B, the inwardly concave wall portion 9 extends over the entire height of the container peripheral wall 1a from the upper surface opening 3 to the container bottom wall 1b and has a desired recess width L1. And is formed on the long side wall portion 1a-1 side.
And the recessed width L1 of this inward concave wall part 10 is formed as the width which reaches substantially the whole long side wall part 1a-1, as shown to (a) of FIG. 3 and FIG. An inwardly bent portion 11 that is formed so as to gradually widen from the upper surface opening 3 to the container bottom wall 1b and bends in a substantially crank shape in plan view on both sides of the recess is provided through the curved wall portion 1a-4. It is made to connect with both the short side wall parts 1a-3 of the container surrounding wall 1a.

≪Configuration of outward convex wall part≫
As shown in FIGS. 4A and 4B, the outward convex wall 10 is formed from the upper surface opening 3 with a convex width L2 that is narrower than the concave width L1 of the inward concave wall 9. It is formed substantially parallel to the long side wall portion 1a-2 side over the entire height of the container peripheral wall 1a reaching the container bottom wall 1b. And the outward bent part 12 bent in a substantially crank shape in plan view on both sides of the projecting side is formed as a peripheral wall shape connected to both short side walls 1a-3 of the container peripheral wall 1a via the curved wall part 1a-4. Yes.

According to the container body 1 formed in this way, as shown by a two-dot chain line in FIG. 4A, when the container peripheral wall 1a is grasped with one hand, the inwardly concave wall part 9 and the inwardly bent part are provided. 11 is placed on the stepped portion (recessed portion) S with respect to 11, and the outward convex wall portion 10 is continuously provided from the inward bent portion 11 via the curved wall portion 1a-4 and the short side wall portion 1a-3. It is formed by the container peripheral wall 1a having a planar view shape that is easily adapted to the hand on which the index finger, middle finger, ring finger, and little finger are put.
Thereby, for example, when the consumer picks up the hand from the display shelf and confirms the product, the container main body 1 can be firmly grasped (gripped), and there is no concern that the container main body 1 slides down from the hand.

  Further, the long side wall portions 1a-1 and 1a-2 of the container peripheral wall 1a are formed by the inwardly bent portion 11 including the inwardly concave wall portion 9 and the outwardly bent portion 12 including the outwardly convex wall portion 10. As the strength (hardness) is increased, the two long side walls 1a-1 and 1a-2 are recessed inside and outside of the container body 1 when gripped, and deformed into the inside and outside of the container body 1, for example. Things will disappear. Thereby, as shown in FIG. 1, the deliquescent dehumidifying agent 7 accommodated in the upper space N of the container body 1 can be prevented from falling into the lower space M. That is, it is possible to prevent the product image from deteriorating due to the deliquescent dehumidifying agent 7 falling into the lower space M.

Moreover, in this embodiment, as shown to (a) of FIG. 4, the reinforcement rib 13 is provided with two or more in the important point inside the container surrounding wall 1a of the container main body 1. As shown in FIG.
The reinforcing ribs 13 have a total of 8 on the inner side of the inwardly concave wall portions 9 and the outwardly convex wall portions 10 of the long side wall portions 1a-1 and 1a-2 and the curved wall portions 1a-4 at the four corners. It is formed in several places. As shown in FIGS. 3 and 4 (b), the reinforcing rib 13 is formed so as to extend from the container bottom wall 1b to a substantially middle part (middle height part) in the height direction of the container peripheral wall 1a. Has a notch 14.
As described above, the reinforcing ribs 13 are provided at the inner side of the container peripheral wall 1a, so that the inwardly bent portion 11 including the inwardly concave wall portion 9 and the outwardly convex wall portion 10 are included. The synergistic action with the outward bending portion 12 further improves the deformation prevention and durability of the container peripheral wall 1a.

  As shown in FIG. 4B and FIG. 7 to be described later, the notch portion 14 is formed in a substantially L shape so as to reach the upper end of the reinforcing rib 13 from the inner surface of the container peripheral wall 1a. The peripheral edge 15 is mounted and locked. As a result, the tray 2 can be placed in the middle and high parts of the container main body 1 stably in a locked state where there is no risk of inadvertent displacement or dropping.

≪Composition of saucer≫
FIG. 5 is a perspective view showing a state in which the saucer is built in the container body, FIG. 6 is a perspective view showing the saucer, and FIG. 7 is a diagram showing the relationship with respect to the state of the reinforcing ribs at the peripheral edge of the saucer. It is an enlarged vertical sectional view showing a stop state.
As shown in FIG. 5, the tray 2 is formed of a synthetic resin material or the like in a plan view shape (transverse cross-sectional shape) of the container body 1 located at a middle / high part in the container body 1. And as shown in FIG. 6, the saucer 2 is formed in the flat part 2a in alignment with the peripheral edge part 15, the intermediate | middle step part 2b currently formed one step higher, and also the substantially chevron shape inside it. It consists of a central portion 2c, and each of these portions is provided with a number of long hole-shaped dropping holes 16.

≪Explanation of moisture-permeable sheet and sealing sheet≫
The moisture-permeable sheet 4 allows moisture and air to pass through, but does not allow water to pass through. For example, a microporous hole is processed in a polyolefin resin, a polyamide resin, a polyvinyl chloride resin, or the like. It is attached so that the upper surface opening part 3 of the container main body 1 may be plugged by being thermally welded to the protruding end of the protrusion 8.
The sealing sheet 5 is made of, for example, a gas barrier film such as an aluminum sheet or polypropylene that does not allow moisture, air, and water to pass through. The sealing sheet 5 is detachably attached to the moisture permeable sheet 4 and is used by consumers. Sometimes, it can be easily removed from the surface of the moisture-permeable sheet 4.

FIG. 8 is a plan view of the dehumidifier from which the sealing sheet has been peeled off and an enlarged cross-sectional view of the main part.
Moreover, in this embodiment, the cut | interruption 18 for opening the drain hole 17 which discharges the deliquescent liquid collected in the lower space M side of the container main body 1 divided by the saucer 2 after use is used for the moisture-permeable sheet 4 after use. I have.
As shown in FIG. 8 (b), the cut 18 has a hole opening 18a provided in a substantially U shape leaving a part of the joint 19, and a width that gradually decreases from both open ends of the hole opening 18a. And a hole opening 18b provided so as to be continuous in a semicircular shape.
As a result, a horizontally elongated drainage hole 17 that is wide at one half side in the lateral direction of the container body 1 and gradually narrows toward the hole edge at the other half side is opened.
The cut 18 (drain hole 17) provided in this way is closed by the closing seal 20 so that the deliquescent liquid accumulated in the lower space M does not flow out to the outside even if the dehumidifier A falls down during use. It has become.

The closing seal 20 is formed in a substantially rectangular shape having a size enough to completely block the drain hole 17 using a water-impermeable sheet or the like, and heat is applied to the moisture-permeable sheet 4 and a part of the hole opening piece portion 17a. It is welded (heat sealed).
Specifically, as indicated by cross hatching in FIG. 8A, the closing seal 20 is thermally welded around the drain hole 17 along the cut line 18 and at a part of the hole opening piece 17a. The one short side is left without being thermally welded to form a knob portion 20a, and the knob portion 20a is picked and peeled off from the moisture-permeable sheet 4.
The thermal welding of the closing seal 20 to the moisture permeable sheet 4 is performed with a weak amount of heat that does not affect the moisture permeable sheet 4 such that the moisture permeable sheet 4 is broken when the closing seal 20 is peeled off.
Thereby, when peeling the closure seal 20 from the moisture permeable sheet 4 and opening the drain hole 17, without breaking the moisture permeable sheet 4, and as shown by a two-dot chain line in FIG. The hole opening piece 17a is rolled together with the closing sheet 20 so that the drain hole 17 is opened.

Note that the specific configuration of the embodiment of the present invention is not limited to the above-described embodiment, and even if there is a design change or the like without departing from the gist of the present invention described in claims 1 to 4. It is included in the invention.
For example, one seal welding protrusion 8 may be provided, and a plurality of three or more may be provided. When three or more are provided, the amount of heat (heater temperature) when the moisture-permeable sheet 4 is thermally welded can be expected to be further reduced by narrowing the protrusion width per one. Further, by providing two or more, it is possible to expect improvement in welding strength, sealing properties, and the like.

  Further, when the shape of the container peripheral wall 1a on the short side wall portion 1a-3 side (including the curved wall portion 1a-4 and part of the long side wall portions 1a-1 and 1a-2) is grasped. In addition, it can be formed into a substantially heart shape that is familiar to the hand, more specifically, a shape on one side when the heart shape is divided into left and right parts from the center.

A Dehumidifier 1 Container body 1a Container peripheral wall 1a-1, 1a-2 Long side wall part 1a-3 Short side wall part 1a-4 Curved wall part 1b Container bottom wall 2 Dish 3 Upper surface opening part 3a Opening edge part 4 Moisture permeability Non-permeable sheet 5 Seal sheet 7 Deliquescent dehumidifier 8 Seal welding ridge 9 Inwardly concave wall part 10 Outward convex wall part 11 Inwardly bent part 12 Outwardly bent part 13 Reinforcement rib 14 Notch part 15 Around Edge (sink)
S steps

Claims (4)

A deliquescent hygroscopic material is contained in a container body having an upper surface opening,
A container for a dehumidifier in which the upper surface opening is closed by at least a moisture-permeable and water-impermeable sheet,
On the opening edge of the upper surface opening of the container body, provided with a sheet welding protrusion that is continuous along the opening shape ,
2. The dehumidifier container according to claim 1, wherein the sheet welding projections are provided in two rows at intervals in the edge width direction of the opening edge . The container body is formed in a substantially rectangular shape in plan view, and is flattened in a range from the upper surface opening to the container bottom wall on one of the long side walls of the container peripheral wall. An inwardly concave wall portion recessed inside the container body in a plan view,
Convex outside the container body in plan view on the other long side wall in a range from the top opening to the container bottom wall and corresponding to the indented width of the inwardly concave wall Provided with an outwardly projecting convex wall,
Furthermore, both the inwardly bent portions formed on both concave sides of the inwardly concave wall portion, the outwardly bent portions formed on both convex sides of the outwardly convex wall portion, and both short sides of the container peripheral wall The dehumidifier container according to claim 1, wherein the side wall portions are connected to each other via curved wall portions.   When grasping the container peripheral wall of the container main body with one hand, a thumb is put on the stepped portion between the inwardly concave wall portion and the inwardly bent portion, and the curved wall portion and the short side from the inwardly bent portion. The planar view shape in which an index finger, a middle finger, a ring finger, and a little finger can be applied is formed so as to cover the outward convex wall portion continuously provided through the wall portion. Dehumidifier container.   The container body includes a plurality of reinforcing ribs extending to substantially halfway in the height direction of the container body at important points inside the container peripheral wall of the container body. The container for dehumidifiers according to any one of claims 1 to 3, further comprising a notch portion in which a peripheral edge portion of a receiving tray contained so as to be divided into a side is detachably locked. .

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