JP2013184728A - Tray for water server - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tray for a water server capable of preventing water leakage between a needle and a plastic bag.SOLUTION: A tray 3 for a water server on which a plastic bag filled with drinking water to be supplied to a water server body is placed, includes: a supporting face 20 for supporting the plastic bag; a needle 11 arranged below the supporting face 20 to open a hole in the plastic bag; and a drinking water supply part 30 having a recessed part 40 which is recessed so that a part of the plastic bag supported by the supporting face 20 is placed below from the supporting face to supply the drinking water to the water server body through the needle 11 by piercing the needle 11 in the plastic bag. At least a surface of the supporting face 20 is formed of a material whose friction force to the plastic bag is reduced.

Description

  The present invention relates to a water server. In particular, the present invention relates to a water server tray for placing a plastic bag filled with drinking water in order to supply drinking water to a water server body.

  A so-called water server is used as a device for setting cold water and hot water by setting a gallon bottle containing drinking water in the upper part of the machine. The water server is installed in a home or the like and is mainly used as follows. That is, a gallon bottle filled with drinking water is distributed from a manufacturer or the like, and the user sets the distributed gallon bottle on the top of the water server. And if a user pushes a switch when drinking water, drinking water will be supplied to a cup.

  By the way, in the case of the water server used by filling a gallon bottle with drinking water and providing it to the user, there are the following problems. In other words, there is a problem in that a distributor who distributes gallon bottles to users needs to collect the gallon bottles that have been emptied for reuse, and thus it takes time to collect the gallon bottles. In addition, there is a problem that the user side needs to store an empty gallon bottle until the contractor collects the gallon bottle, and a storage space must be secured. Furthermore, due to the hygiene problem due to repeated reuse of gallon bottles and the structure in which drinking water must be supplied to the water server body while inflating the gallon bottle when using the water server, There is a problem that various germs invade and propagate.

  Then, instead of filling drinking water into a gallon bottle, for example, a water server for filling drinking water in a plastic bag made of a plastic film such as a plastic bag and supplying drinking water has been developed (for example, Patent Document 1).

  In the water server disclosed in Patent Document 1, a hole is formed in a plastic bag by a needle provided in a bottle holder (water server tray) for setting a plastic bag filled with drinking water, and formed in the needle. The drinking water filled in the plastic bag is supplied to the water server body through the flow path.

  Moreover, the needle provided in the bottle holder has a pointed shape with a thin and sharp tip so that a hole can be made in the plastic bag. For this reason, in order to prevent injuries at the sharp tip of this needle, a bottle holder with a mechanism in which the needle is housed in the bottom of the bottle holder and does not protrude when the plastic bag is not set in the bottle holder is proposed (Patent Document 2).

  That is, in Patent Document 2, by pressing the bottle holder toward the water server main body from the top to the bottom, the needle urged and housed by the spring below the bottom of the bottle holder is pushed upward and protrudes. It has become. A hole is formed in the plastic bag by the protruding needle, and the drinking water filled in the plastic bag can be supplied to the water server body.

  By the way, in the case of the water server which fills a plastic bag with drinking water and supplies drinking water like patent document 1 and 2 mentioned above, water may leak from between a plastic bag and a needle. In particular, when the drinking water in the plastic bag decreases, the adhesion between the plastic bag and the needle decreases, and a gap is formed between the needle and the plastic bag, and the drinking water leaks from this gap.

  Therefore, a needle provided with a non-slip portion made of rubber has been proposed (Patent Document 3). In patent document 3, the adhesiveness of the plastic bag filled with drinking water and a needle can be improved by providing a non-slip | skid part in a needle.

JP 2011-44646 A Registered Utility Model No. 3164948 Registered Utility Model No. 3168193

  By the way, Patent Document 3 has a configuration in which a non-slip portion is provided on the needle in order to improve the adhesion of the portion where the plastic bag (plastic bag) and the needle are in contact with each other. That is, Patent Document 3 is an invention made by paying attention to the needle.

  However, when the plastic bag is stored in the water server tray (bottle holder), if the plastic bag is wrinkled, the wrinkle becomes a factor that inhibits the adhesion between the plastic bag and the needle. In particular, many wrinkles are formed in a plastic bag which is formed of a thin plastic film and whose outer shape is easily deformed by the influence of external pressure or the like. For this reason, in such a plastic bag whose outer shape is easily deformed, the generation of wrinkles is a particularly serious problem as a factor that hinders adhesion to the needle.

  Therefore, the inventors focused on how to devise a water server tray on which the plastic bag is installed so as to suppress the generation of wrinkles in the plastic bag.

  The present invention has been made paying attention to such a new problem, and an object of the present invention is to provide a water server tray capable of preventing water leakage between a needle and a plastic bag. To do.

  A water server tray according to the present invention is a water server tray on which a plastic bag filled with drinking water to be supplied to a water server body is placed in order to solve the above-described problems, and supports the plastic bag. A support surface, a needle disposed below the support surface, for opening a hole in the plastic bag, and for passing the needle through the plastic bag and supplying drinking water to the water server body through the needle And a drinking water supply part having a recessed portion recessed so as to drop a part of the plastic bag supported by the support surface downward from the support surface, and at least the surface of the support surface is It is made of a material that reduces the frictional force against the plastic bag.

  Here, the water server is a device that can set a container containing several liters to several tens of liters of drinking water and can provide drinking water to users as appropriate, and is also called a water dispenser or drink dispenser. The The plastic bag is a bag made of a plastic film such as a plastic bag.

  According to the configuration described above, since the needle and the drinking water supply unit are provided, a part of the plastic bag is dropped from the support surface into the recess of the drinking water supply unit, a hole is opened in the depressed part, and the water server body is passed through the needle. Drinking water can be supplied.

  Further, the support surface is formed of a material that reduces the frictional force against the plastic bag. For this reason, it can reduce that a wrinkle generate | occur | produces in the part into which the plastic bag fell. Furthermore, when the plastic bag is pulled into the recess with the weight of the drinking water filled in the plastic bag, the wrinkled portion is pulled and easily stretched, so even if wrinkles are generated, it is removed. be able to.

  Note that the material that reduces the frictional force may be fluorine or silicon that coats the surface of the support surface, or may be a sheet that contains fluorine or silicon attached to the surface of the support surface. Alternatively, it may be a slidability improver, a chemical lubricant, or a solid lubricant added to the resin material forming the surface of the support surface.

  In this way, since the needle and the plastic bag can be in contact with each other in the recess of the drinking water supply unit with the wrinkles of the plastic bag removed, the adhesion between the needle and the plastic bag can be improved. it can.

  Therefore, the water server tray according to the present invention has the effect of preventing water leakage between the needle and the plastic bag.

  In the water server tray according to the present invention, in the configuration described above, the support surface may be inclined so as to be tapered toward the drinking water supply unit.

  In the water server tray according to the present invention, in the above-described configuration, the drinking water supply unit has a circular depression port in which a part of the plastic bag falls into the recess from the support surface. The diameter is preferably 80 mm or more.

  In the water server tray according to the present invention, in the configuration described above, the drinking water supply unit has a through-hole for projecting the needle upward on the bottom surface of the recess, and an outer periphery of the through-hole and the vicinity thereof. And an adsorbing part having adsorbability with respect to the plastic bag and having flexibility.

  According to the above-described configuration, the drinking water supply unit includes the through-hole for projecting the needle and the outer periphery of the through-hole and the vicinity thereof, and thus the adsorbing unit is adsorbed to the plastic bag. Drinking water can be prevented from leaking between the needle and the needle.

  In the water server tray according to the present invention, in the configuration described above, the drinking water supply unit includes a suction unit cover disposed on an outer portion surrounding the suction unit so as to hold the suction unit on the bottom surface of the recess. Further, at least a part of a contact surface with the plastic bag in the suction part cover may be lower than a contact surface with the plastic bag in the suction part.

  In the water server tray according to the present invention, in the configuration described above, the suction portion cover may be formed of an elastic body having a frictional force larger than that of the support surface with respect to the plastic bag.

  The water server tray according to the present invention may further include an outer wall that is disposed so as to surround the outer periphery of the support surface, and is erected upward from the support surface. The shape of the horizontal projection surface of the storage chamber, which is a compartment for storing the plastic bag, and the shape of the horizontal projection surface of the plastic bag are similar to each other, and the horizontal projection area of the storage chamber is It is preferably 80% or more of the horizontal projected area of the plastic bag.

  A water server tray according to the present invention is a water server tray on which a plastic bag filled with drinking water to be supplied to a water server body is placed in order to solve the above-described problems, and supports the plastic bag. A support surface, a needle disposed below the support surface, for opening a hole in the plastic bag, and for passing the needle through the plastic bag and supplying drinking water to the water server body through the needle And a drinking water supply part having a recessed part recessed so as to drop a part of the plastic bag supported by the support surface downward from the support surface, and the drinking water supply part comprises: A part of the plastic bag falls from the support surface into the recess, and has a circular depression. Diameter of 80mm or more.

  According to the configuration described above, since the needle and the drinking water supply unit are provided, a part of the plastic bag is dropped from the support surface into the recess of the drinking water supply unit, a hole is opened in the depressed part, and the water server body is passed through the needle. Drinking water can be supplied.

  Moreover, the drinking water supply part has a circular dip into which a part of the plastic bag falls into the recess from the support surface, and the diameter of the dip is 80 mm or more.

  Here, as the diameter increases, the amount of sagging (deflection) of the plastic bag into the recess increases, that is, the force in the pulling direction acting on the plastic bag increases. Thus, wrinkles generated in the plastic bag in the recess can be eliminated by increasing the force in the pulling direction. In particular, as a result of intensive studies by the inventor, when the diameter is 80 mm or more, wrinkles that cause water leakage between the needle and the plastic bag did not occur.

  Therefore, the water server tray according to the present invention has the effect of preventing water leakage between the needle and the plastic bag.

  Furthermore, the needle can be penetrated in a state where the diameter is 80 mm or more and a force in a larger pulling direction is applied to the depressed portion of the plastic bag. For this reason, a clean hole along the cross-sectional shape of the needle can be formed in the plastic bag.

  Therefore, the end portion of the tear of the plastic bag is stuck to the side surface of the needle, and as a result, the sealing effect on the needle of the plastic bag is enhanced, and water leakage from between the needle and the plastic bag is prevented. Can do.

  A water server tray according to the present invention is a water server tray on which a plastic bag filled with drinking water to be supplied to a water server body is placed in order to solve the above-described problems, and supports the plastic bag. A support surface, a needle disposed below the support surface, for opening a hole in the plastic bag, and for passing the needle through the plastic bag and supplying drinking water to the water server body through the needle And a drinking water supply unit having a recessed portion recessed so as to drop a part of the plastic bag supported by the support surface downward from the support surface, and an outer periphery of the support surface. An outer wall standing upward from the support surface, and formed by the support surface and the outer wall. The shape of the horizontal projection surface of the storage chamber, which is a compartment for storing the plastic bag, is similar to the shape of the horizontal projection surface of the plastic bag, and the horizontal projection area of the storage chamber is the same as that of the plastic bag. 80% or more of the horizontal projection area.

  According to the configuration described above, since the needle and the drinking water supply unit are provided, a part of the plastic bag is dropped from the support surface into the recess of the drinking water supply unit, a hole is opened in the depressed part, and the water server body is passed through the needle. Drinking water can be supplied.

  In addition, the shape of the horizontal projection surface of the storage room, which is a compartment for storing plastic bags, is similar to the shape of the horizontal projection surface of the plastic bag, and the horizontal projection area of the storage room is equal to the horizontal projection area of the plastic bag. 80 percent or more.

  Here, when the horizontal projection area of the storage chamber is smaller than that of the plastic bag, the smaller the horizontal projection area of the storage chamber, the more wrinkles are formed in the plastic bag. In particular, as a result of intensive studies by the inventors, if the horizontal projection area of the storage room is up to about 80% of the horizontal projection area of the plastic bag, the number of wrinkles formed in the plastic bag and the size (depth) of the wrinkles Has found that it does not cause water leakage.

  Thus, when the horizontal projection area of the storage room is 80% or more of the horizontal projection area of the plastic bag, the number of wrinkles formed in the plastic bag and the size (depth) of the wrinkles are such that water leakage does not occur. It will be a thing. In other words, when the horizontal projection area of the storage room is 80% or more of the horizontal projection area of the plastic bag, the needle and the plastic bag are in contact with each other in a state where the wrinkle of the plastic bag is small (the number of wrinkles that does not cause leakage). It is possible to improve the adhesion between the needle and the plastic bag.

  Therefore, the water server tray according to the present invention has the effect of preventing water leakage between the needle and the plastic bag.

  The water server tray according to the present invention is configured as described above, and has an effect of preventing water leakage between the needle and the plastic bag.

It is a figure which shows an example of schematic structure of the water server which concerns on embodiment of this invention. It is sectional drawing which shows an example of the principal part structure of the tray for water servers with which the water server shown in FIG. 1 is provided. It is the side view which showed typically an example of the form which looked at the plastic bag which concerns on this Embodiment from the side. It is the top view which showed typically an example of the form which looked at the plastic bag which concerns on this Embodiment toward the downward direction from the upper direction. It is the figure which showed typically an example of the state of a plastic bag when the size of a plastic bag and the size of the tray for water servers are made to correspond. It is the figure which showed typically an example of the state of a plastic bag when the size of the tray for water servers was made into 80% of the size of a plastic bag. It is the figure which showed typically an example of the state of a plastic bag when the size of the tray for water servers is made into 70% of the size of a plastic bag. It is a figure which shows an example of the planar shape of the drinking water supply part with which the tray for water servers shown in FIG. 2 is provided. It is sectional drawing which shows an example of the principal part structure of the needle accommodating part with which the tray for water servers shown in FIG. 2 is provided. In the water server which concerns on this Embodiment, it is a figure which shows an example of the attachment state which attached the tray for water servers to the main-body part. It is sectional drawing which shows an example of the drinking water supply part with which the tray for water servers which concerns on this Embodiment is provided. It is the table | surface which showed an example of the relationship between the diameter of a drinking water supply part, and the deflection amount (sag amount) of a plastic bag. It is a figure which shows typically an example of the fall state (deflection state) of the plastic bag in the drinking water supply part of the tray for water servers which concerns on this Embodiment.

  Hereinafter, a specific configuration example of the water server 1 according to the embodiment of the present invention will be described with reference to the drawings. In the following description, the same or corresponding elements are denoted by the same reference symbols throughout all the drawings, and redundant description thereof is omitted.

(Water server configuration)
The configuration of the water server 1 will be described with reference to FIGS. 1 and 2. FIG. 1 is a diagram illustrating an example of a schematic configuration of a water server 1 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view illustrating an example of a main configuration of the water server tray 3 provided in the water server 1 illustrated in FIG. 1.

  The water server 1 according to the present embodiment is an instrument that provides cold water and hot water by setting a plastic bag 10 filled with drinking water at the top of the machine. In this embodiment, the plastic bag 10 is filled with drinking water such as natural water. The plastic bag 10 filled with drinking water has a structure consisting of an inner layer, an intermediate layer, and an outer layer, and is molded using a low-density polyethylene for the inner layer, nylon for the intermediate layer, and a plastic film made of unstretched polypropylene for the outer layer. It may be what you did. Alternatively, the plastic bag 10 may be formed using a plastic film having a two-layer structure using polyethylene having different properties. The plastic bag 10 is a material that is easy to stick to the surface of the needle 11 as much as possible when a hole is opened by a needle 11 to be described later, and that does not allow harmful substances to dissolve in the filled drinking water. It is preferable that the material is made of a material having sufficient strength against the pressure.

  As shown in FIG. 1, the water server 1 includes a main body (water server main body) 2 and a water server tray 3 placed on the upper portion of the main body 2.

  The main body 2 receives drinking water from the plastic bag 10 set in the water server tray 3 and provides the user with the supplied drinking water as cold water or hot water. In this embodiment, the exterior of the main body 2 has a rectangular parallelepiped shape that extends long in the vertical direction (vertical direction). The main body 2 includes a cooling tank 21 that cools and holds drinking water by a cooling device (not shown) and a heating tank 22 that heats and holds drinking water by a heater (not shown). In addition, the main body 2 is provided with a cold water discharge port 23 for discharging cold water cooled in the cooling tank 21 and a hot water discharge port 24 for discharging hot water heated in the heating tank 22. ing. In the main body 2, a heating tank 22 is disposed below the cooling tank 21, and a part of the drinking water that has been sent to the cooling tank 21 is sent to the heating tank 22.

  The water server 1 according to the present embodiment has a configuration in which two discharge ports, a cold water discharge port 23 and a hot water discharge port 24, are provided outside the main body 2, but for cold water and hot water. It is good also as a structure provided only with one discharge port which serves as both. When comprised in this way, the main-body part 2 will have a switching mechanism so that the cold water from the cooling tank 21 and the hot water from the heating tank 22 can each be switched and discharged to a discharge port.

  In FIG. 1, the side on which the cold water discharge port 23 and the hot water discharge port 24 are provided is the front side, and the side facing the front side (the back side in FIG. 1) is the rear side. In the water server 1, the side on which the water server tray 3 is disposed is the upper side, and the side on which the main body 2 is disposed is the lower side.

  Although details will be described later on the upper surface 25 of the main body 2, insertion holes (not shown) for inserting the leg portions 12 a to 12 d of the water server tray 3 into the four corners, and a needle housing portion (described later) A receiving portion 26 that is recessed downward is formed in order to insert the (accommodating portion) 13.

  The water server tray 3 is a tray that functions as a cradle for the plastic bag 10 when the plastic bag 10 filled with drinking water is set in the water server 1. As shown in FIG. 2, the water server tray 3 has a substantially rectangular parallelepiped shape with an open upper surface, and the plastic bag 10 is placed on the bottom portion 19. A cylindrical needle housing portion 13 is provided below the bottom portion 19. The needle accommodating portion 13 is disposed so as to protrude downward from the central portion of the bottom portion 19. Although details will be described later, a needle 11 for opening a hole in the plastic bag 10 set in the water server tray 3 is accommodated in the needle accommodating portion 13. Furthermore, four legs 12a, 12b, 12c, and 12d are also provided on the bottom 19 of the water server tray 3. In FIGS. 1 and 2, the rear leg portions 12c and 12d are not shown because they are the back surfaces of the front leg portions 12a and 12b.

  The water server tray 3 is detachable from the main body 2. That is, the leg portions 12 a to 12 d can be fixed to the main body portion 2 by being inserted into insertion holes (not shown) provided in the main body portion 2 and inserted into the receiving portion 26 of the needle accommodating portion 13. On the contrary, the leg portions 12a to 12d can be removed from the main body portion 2 by being extracted from the insertion hole or by being extracted from the receiving portion 26 of the needle accommodating portion 13.

  Next, the magnitude relationship between the plastic bag 10 filled with drinking water set in the water server 1 according to the present embodiment and the water server tray 3 functioning as a cradle for the plastic bag 10 will be described.

(Relationship between plastic bag and water server tray)
The plastic bag 10 according to the present embodiment is molded so as to have a so-called pillow shape as shown in FIGS. 3 and 4 by sealing both ends of a cylindrical plastic film. Filled with drinking water. FIG. 3 is a side view schematically showing an example of a form of the plastic bag 10 according to the present embodiment viewed from the side. FIG. 4 is a plan view schematically showing an example of a form in which the plastic bag 10 according to the present embodiment is viewed from above to below. 3 and 4 show a state in which the plastic bag 10 is filled with water. As shown in FIG. 4, the planar shape of the plastic bag 10, that is, the shape when viewed from the upper side to the lower side is substantially rectangular, which is similar to the planar shape of the water server tray 3.

  By the way, conventionally, the planar shape of the water server tray has a shape corresponding to the outer shape of the plastic bag. However, the size of the planar shape of the water server tray is the plane of the plastic bag 10 in the state where the drinking water is fully filled in consideration of the relationship between the shape and dimensions of the main body of the water server and the appearance design. It is smaller than the shape.

  Here, as a result of intensive studies by the inventors, the relationship between the size of the plastic bag 10 and the size of the water server tray 3 and the number of wrinkles or the depth of wrinkles generated in the plastic bag 10 are as follows. I found out.

  First, the size of the water server tray 3 used for comparison is a projection area (horizontal projection area) when the water server tray 3 is viewed downward in the vertical direction. More precisely, the water server tray 3 is configured so that the inner dimension is larger on the upper side than on the lower side, and the horizontal projection of the storage chamber 4 which is a lower compartment having a smaller inner dimension. It becomes an area.

  Further, the size of the plastic bag 10 is a horizontal projected area in the assumed state when it is assumed that the plastic bag 10 fully filled with drinking water is maintained without being deformed. That is, the plastic film forming the plastic bag 10 has a thickness of about 120 μm to 150 μm, for example, so that a hole can be opened by the needle 11 as described above. For this reason, when the plastic bag 10 filled with drinking water is actually placed on the floor or the like, the drinking water inside moves under the influence of gravity and deforms thereby. Therefore, it is assumed that the plastic bag 10 filled with water is self-supporting as being unaffected by the movement of water.

  Here, when the size of the plastic bag 10 and the size of the water server tray 3 were the same, the plastic bag 10 placed on the water server tray 3 hardly wrinkled as shown in FIG. This is because the size of the plastic bag 10 and the size of the water server tray 3 coincide with each other, and the plastic bag 10 is supported by the outer wall 18 and the bottom 19 of the water server tray 3 in a substantially undeformed state. Because. FIG. 5 is a diagram schematically showing an example of the state of the plastic bag 10 when the size of the plastic bag 10 and the size of the water server tray 3 are matched.

  On the other hand, as shown in FIGS. 6 and 7, when the size of the water server tray 3 is smaller than the size of the plastic bag 10, the smaller the size of the water server tray 3 is, the more the plastic bag 10 has. It was found that wrinkles were formed. This is because the plastic bag 10 comes into contact with the outer wall 18 and deforms so as to fit in the water server tray 3. FIG. 6 is a diagram schematically illustrating an example of the state of the plastic bag 10 when the size of the water server tray 3 is set to 80% of the size of the plastic bag 10. FIG. 7 is a view schematically showing an example of the state of the plastic bag 10 when the size of the water server tray 3 is set to 70% of the size of the plastic bag 10.

  Here, as the number of wrinkles increases, a gap due to wrinkles is formed at a contact position (a drinking water supply unit 30 described later) between the plastic bag 10 and a needle 11 penetrating the plastic bag 10, which causes water leakage. It becomes. However, in the generation of wrinkles as shown in FIG. 6, water leakage did not occur from the contact position between the plastic bag 10 and the needle 11. That is, if the size of the water server tray 3 is up to about 80% of the size of the plastic bag 10, the inventor determines the number of wrinkles formed on the plastic bag 10 and the size (depth) of the wrinkles. It was discovered that it would be something that would not cause

  Therefore, the water server tray 3 according to the present embodiment is preferably formed so that its size is 80% or more of the size of the plastic bag 10.

  Below, the detailed structure of the tray 3 for water servers formed with the size mentioned above is demonstrated.

(Configuration of tray for water server)
Next, the configuration of the water server tray 3 will be described with reference to FIGS. 8 to 10 in addition to FIG. 2 described above. FIG. 8 is a diagram illustrating an example of a planar shape of the drinking water supply unit 30 provided in the water server tray 3 illustrated in FIG. 2. FIG. 9 is a cross-sectional view showing an example of a main part configuration of the needle accommodating portion 13 provided in the water server tray 3 shown in FIG. 2. FIG. 10 is a diagram illustrating an example of an attached state in which the water server tray 3 is attached to the main body 2 in the water server 1 according to the present embodiment.

  As shown in FIG. 2, the water server tray 3 has an outer wall 18 erected in the vertical direction and a bottom portion 19 inclined in a mortar shape toward the center of the water server tray 3 at the lower end portion of the outer wall 18. Prepare.

  The outer side wall 18 forms the side surface of the water server tray 3. The cross-sectional shape of the water server tray 3 cut out in the horizontal direction (the cross-sectional shape surrounded by the outer wall 18) is substantially similar to the horizontal projection surface shape of the plastic bag 10, that is, substantially rectangular. ing. However, in the water server tray 3, the upper dimension is larger in the upper side than in the lower side. That is, the outer wall 18 is stepped so that the inner dimension of the water server tray 3 increases as it goes upward.

  For this reason, a plastic bag 10 filled with drinking water is introduced from above with a larger inner dimension, and the plastic bag 10 is stored in a predetermined position in a lower compartment having a smaller inner dimension, that is, the storage chamber 4. It is supposed to be set. And the plastic bag 10 is hold | maintained in the state mounted on the bottom part 19 surface.

  As shown in FIG. 2, the bottom portion 19 is formed so as to surround the outer periphery of the drinking water supply portion 30 and the drinking water supply portion 30 formed from a center thereof to the vicinity thereof, and the water server tray 3. And a support surface 20 for supporting the plastic bag 10 accommodated in the container.

  The support surface 20 is a surface that holds the placed plastic bag 10 and has a so-called mortar shape that is inclined toward the drinking water supply unit 30 and is tapered downward. Therefore, when the plastic bag 10 is put into the water server tray 3, the plastic bag 10 is first received by the support surface 20, and then the plastic bag is weighted with the weight of the drinking water filled in the plastic bag 10. The bottom portion in the vicinity of the center portion of 10 falls (bends) toward the drinking water supply unit 30.

  Here, in the bottom 19 according to the present embodiment, the inner surface of the support surface 20 (the surface in contact with the plastic bag 10) is formed of a material that does not exert a large frictional force on the plastic bag 10. That is, when a large frictional force acts on the plastic bag 10, wrinkles are likely to occur in the portion of the plastic bag 10 that falls toward the drinking water supply unit 30. On the other hand, when the plastic bag 10 is formed of a material that does not exert a large frictional force, it is possible to reduce the occurrence of wrinkles in the portion of the plastic bag 10 that falls toward the drinking water supply unit 30. . Even if wrinkles occur, when the plastic bag 10 is pulled toward the drinking water supply unit 30 with the weight of the drinking water, the wrinkled portion is also pulled and easily stretched, Can be removed.

  Thus, the drinking water supply part 30 and the plastic bag 10 can be in surface contact in the state which removed the wrinkle which generate | occur | produces in the drop part of the plastic bag 10 to the drinking water supply part 30. FIG.

  In order to prevent a large frictional force from acting between the inner surface of the support surface 20 and the plastic bag 10, for example, fluorine or silicon may be coated on the inner surface of the support surface 20, or fluorine or silicon may be coated. You may affix the sheet | seat contained. Or you may form the support surface 20 as a material which added the slidability improvement agent. Examples of slidability improvers include oil lubricants, synthetic lubricants, natural waxes, metal soaps, olefin resins, fluororesins, silicone resins, polyester resins, and other polymer lubricants, or molybdenum disulfide or graphite. Solid lubricants can be used.

  The drinking water supply unit 30 functions as a receiving port that supplies the drinking water filled in the plastic bag 10 to the main body unit 2.

  The external shape of the drinking water supply unit 30 is a cylindrical shape extending in the vertical direction as shown in FIG. A cylindrical needle housing portion 13 having a diameter smaller than that of the drinking water supply portion 30 and extending downward from the drinking water supply portion 30 is formed below the drinking water supply portion 30.

  On the other hand, the drinking water supply part 30 has the recessed part 40 depressed in the downward direction from the support surface 20, as shown in FIG. Then, in the drinking water supply unit 30, a part of the plastic bag 10 supported by the support surface 20 is dropped from the drop port 38 of the recess 40. A through hole 34 for projecting the needle 11 upward is formed at the center position of the bottom surface 37 of the recess 40, and projects through the through hole 34 into the portion of the plastic bag 10 that has fallen from the drop port 38. The needle 11 is penetrated.

  The cross-sectional shape of the bottom surface 37 when the drinking water supply unit 30 is cut out in the vertical direction is a mortar shape that is recessed toward the through hole 34. On the other hand, the planar shape of the drinking water supply unit 30 as viewed from above downward is a circle centered on the through hole 34 as shown in FIG. That is, the bottom surface 37 and the drop opening 38 of the drinking water supply unit 30 are both circular.

  In addition, on the bottom surface 37, the outer periphery of the through hole 34 is provided with an adsorbing portion 33 made of a polymer gel whose main component is a copolymer of polyethylene and styrene, for example. The adsorbing portion 33 is composed of a main agent and oil, and has a stitch structure formed by the main agent. The oil is paraffinic oil. The adsorbing part 33 is not limited to the above-described polymer gel as long as it has adsorbability with the plastic bag 10 and has flexibility. For example, an elastomer having adsorptivity to the plastic bag 10 may be used. Alternatively, it may be a member having a large number of fine suction cups and having the same flexibility as the polymer gel described above, and can obtain the same sealing effect as the polymer gel. The detailed configuration of the drinking water supply unit 30 will be described later.

  As shown in FIG. 9, the needle accommodating portion 13 includes an insertion path 35 that communicates with the through hole 34, the needle 11, the joint portion 16, the needle holder 15, the spring 14, and the pipe receiving portion 17. An opening 36 is formed at the lower end of the needle housing portion 13.

  The needle 11 is for making a hole in the plastic bag 10 and has an elongated cylindrical shape with a sharp pointed tip. An opening 47 is formed at the tip of the needle 11, and a flow path is formed in the needle 11 so as to communicate with the opening 47 and send drinking water toward the lower main body 2.

  The joint 16 joins the needle 11 to the needle holder 15, and one end thereof covers the outer periphery of the lower end (base end side) of the needle 11 with the needle 11. The other end is inserted into the needle holder 15 and fixed. The joint portion 16 has a cylindrical shape in which the outer diameter of the center portion is larger than the outer diameter of both end portions in the up-down direction, and so-called both ends are narrowed (see FIG. 2). And the junction part 16 is hollow so that the outer periphery of the needle 11 can be covered and can hold | maintain the needle 11, and the drinking water sent through the needle 11 can be sent toward the main body part 2 below. It has become.

  The needle holder 15 holds the needle 11 joined through the joint portion 16 in the needle housing portion 13, and an internal pipe 27 (see FIG. 10 described later) provided in the main body portion 2. It accepts and joins with this internal piping 27. As shown in FIG. 9, the needle holder 15 has a cylindrical shape along the inner periphery of the needle housing portion 13, and the end surface (upper side end surface) on which the joint portion 16 is inserted and fixed has a joint portion. 16 is recessed downwards so that 16 can be received. Further, a pipe receiving part 17 for receiving and accommodating the internal pipe 27 connected to the cooling tank 21 in the main body part 2 is provided on the end face (lower end face) opposite to the side where the joint part 16 is fixed. Is formed. In the needle holder 15, the drinking water that circulates in the joint portion 16 passes through the pipe receiving portion 17 between the portion where the joint portion 16 is inserted and the portion where the pipe receiving portion 17 is formed. A flow path is formed so as to flow through the pipe 27.

  When the water server tray 3 is not placed on the main body 2, the needle holder 15 is placed below the needle housing portion 13 by the spring 14 disposed in the space between the drinking water supply unit 30. It is pressed. For this reason, the needle 11 is arranged in a state of being accommodated in the needle accommodating portion 13.

  The pipe receiving portion 17 has a cylindrical shape whose outer peripheral dimension is smaller than that of the needle holder 15. As shown in FIG. 10, the outer circumference of the inner pipe 27 can be accommodated in the pipe receiving portion 17. It is hollow with the shape along.

  When the water server tray 3 is placed on the upper part of the main body 2, the tip of the internal pipe 27 is inserted into the hollow portion of the pipe receiving part 17 and fitted, and the pipe receiving part 17 is pushed upward. It has become. Thereby, the needle 11 accommodated in the needle accommodating part 13 penetrates and protrudes through the through-hole 34 of the drinking water supply part 30 arrange | positioned above the needle accommodating part 13. FIG.

(Drinking water supply department)
Here, the drinking water supply unit 30 will be described in detail with reference to FIGS. 11 and 12.

  First, before describing the configuration of the drinking water supply unit 30 with reference to FIGS. 11 and 12, the size of the drinking water supply unit 30 will be described. FIG. 11 is a cross-sectional view showing an example of the drinking water supply unit 30 provided in the water server tray 3 according to the present embodiment. FIG. 12 is a table showing an example of the relationship between the diameter of the drinking water supply unit 30 and the amount of bending (the amount of sagging) of the plastic bag 10.

(Size of drinking water supply unit)
The inventor made the diameter d of the drinking water supply unit 30 (FIG. 11) under the condition that the size (horizontal projection area) of the water server tray 3 is 360 cm ² and the size (horizontal projection area) of the plastic bag 10 is 360 cm ² . And a relationship between the amount of sagging f of the plastic bag 10 in the drinking water supply unit 30 (see FIG. 11). Note that the sagging amount f of the drinking water supply unit 30 is the distance that the plastic bag 10 is bent downward from the uppermost position of the drinking water supply unit 30 as shown in FIG. In addition, the side part of the drinking water supply part 30 is erected in the vertical direction upward, and is bent so as to be directed to the outer periphery of the water server tray 3 at a certain point. This bending point is defined as the uppermost position of the drinking water supply unit 30, that is, the edge of the drop port 38.

  Here, the water server tray 3 having a diameter d of the drinking water supply unit 30 of 60 mm, a diameter d of 70 mm, a diameter d of 80 mm, a diameter d of 90 mm, and a diameter d of 100 mm was prepared. At this time, when the amount of deflection (the amount of sagging) of the central portion of the plastic bag 10 is measured, the amount of deflection f is 3 mm, 4 mm, 6 mm, in order according to the size of each diameter, as shown in the table of FIG. It became 9 mm and 14 mm.

  Furthermore, these prepared water server trays 3 were compared, and the number of wrinkles generated in the plastic bag 10 and the wrinkle depth were examined. As a result, the water server tray 3 having a diameter d of 80 mm or more and a deflection amount f of 6 mm or more did not cause wrinkles that would cause water leakage between the needle 11 and the plastic bag 10. . However, for the water server tray 3 having a smaller diameter d and a lowering amount f than this, wrinkles of a degree causing water leakage were formed in the plastic bag 10.

  In the table shown in FIG. 12, “x” indicates that water leaks between the plastic bag 10 and the needle 11 due to wrinkles with considerable accuracy in the experiment. Further, Δ indicates that water leakage may occur between the plastic bag 10 and the needle 11 due to wrinkles in the experiment. Moreover, (circle) has shown that the water leak resulting from a wrinkle did not arise in experiment.

  Therefore, it has been found that it is preferable to increase the diameter d of the drinking water supply unit 30 as much as possible in order to prevent the drinking water supply unit 30 from generating wrinkles in the plastic bag 10. In particular, it has been found that the diameter d is preferably 80 mm or more.

  In the table shown in FIG. 12, it can be seen that the greater the diameter d, the greater the amount of bending of the plastic bag 10, that is, the greater the force in the pulling direction that acts on the plastic bag 10.

  That is, as the diameter d increases, the plastic bag 10 is pulled toward the drinking water supply unit 30 with a greater force, and wrinkles can be prevented from occurring in the sagging portion of the plastic bag 10.

  Moreover, the needle 11 can be penetrated in the state where the force in the pulling direction is concentrated in the depressed portion of the plastic bag 10 in this way. For this reason, the needle 11 can form a clean hole along the cross-sectional shape of the needle 11 with respect to the plastic bag 10. Therefore, the end portion of the tear of the plastic bag 10 is stuck to the side surface of the needle 11, and as a result, the sealing effect of the plastic bag 10 on the needle 11 is enhanced, and water is inserted between the needle 11 and the plastic bag 10. It is possible to prevent leakage.

The experimental results also showed that the size (horizontal projection area) of the water server tray 3 was 250 cm ^{2 and} that the size (horizontal projection area) of the plastic bag 10 was 250 cm ² . . In particular, when the diameter d is 140 mm, the generation of wrinkles in the drinking water supply unit 30 can be substantially prevented. Then, the drinking water supply part 30 which concerns on this Embodiment sets the diameter d to 80 mm or more. In particular, 140 mm is preferable.

(Configuration of drinking water supply unit)
Next, the configuration of the drinking water supply unit 30 will be described with reference to FIG. 13 in addition to FIG. 11 described above.

  As shown in FIG. 11, the drinking water supply unit 30 includes a gel cover part 31, a needle guide part 32, and an adsorption part 33 on the bottom surface 37 of the recess 40.

  In the cross-sectional shape obtained by vertically cutting the bottom surface 37, the gel cover portion 31 is disposed in the upper layer, the needle guide portion 32 is disposed in the lower layer, and the suction portion 33 is disposed so as to surround the needle 11 disposed in the center portion thereof.

  The gel cover part 31 protects the adsorbing part 33 from being removed from the drinking water supply part 30, and is formed of, for example, an elastic body having an adsorbing property with respect to the plastic bag 10 such as an elastomer. Alternatively, although not particularly illustrated in FIG. 11, a configuration may be employed in which a plurality of fine suction cups formed of an elastic body are formed on the contact surface with the plastic bag 10. As shown in FIG. 11, the contact surface of the gel cover portion 31 with the plastic bag 10 (the upper surface of the gel cover portion 31) is inclined toward the adsorption portion 33 from the outer peripheral side of the water server tray 3 as shown in FIG. Yes. However, strictly speaking, the upper surface of the gel cover part 31 is recessed so as to draw a downward arc in its cross-sectional shape, and in the vicinity of the outer periphery of the adsorption part 33, the adsorption part 33 is more than the upper surface of the gel cover part 31. It is in a high position. That is, the adsorbing part 33 has a shape protruding upward from the upper surface of the gel cover part 31.

  The needle guide portion 32 is disposed below the gel cover portion 31 and has an insertion path 35 that guides the needle 11 so as to guide it to the through hole 34.

  The adsorbing part 33 is for partly deforming (raising) to fill a gap formed between the plastic bag 10 and the needle 11 and improve adhesion. As can be seen from FIG. 11, the suction portion 33 has a shape in which two layers having different dimensions are overlapped. More specifically, the adsorbing portion 33 has a square shape with a through hole 34 formed in the center in a plan view seen from above as shown in FIG. Under the protruding layer 33a), a layer (base layer 33b) having a larger planar dimension than the protruding layer 33a is provided. The outer periphery of the protruding layer 33 a and the upper surface of the base layer 33 b on the lower side are covered with the gel cover portion 31. In addition, the needle guide portion 32 covers the outer periphery and the bottom of the base layer 33 b of the suction portion 33. Thus, since the adsorption | suction part 33 is covered with the gel cover part 31 and the needle guide part 32, the adsorption | suction part 33 does not remove | deviate by the vertical motion of the needle 11. FIG.

  Further, as shown in FIG. 11, a through hole 34 communicating with the insertion path 35 formed by the needle guide portion 32 is formed at the center of the suction portion 33 in plan view. The cross-sectional shape vertically cut out of the through hole 34 has a tapered shape that tapers from below to above, and the diameter of the tip portion (upper surface portion) of the through hole 34 is cut out in the horizontal direction. It is slightly smaller than the diameter of the cross section.

  Moreover, the adsorption | suction part 33 which forms the through-hole 34 is comprised from a polymer gel, and has flexibility. For this reason, when the needle 11 moves upward from below and protrudes from the through hole 34, the suction portion 33 and the needle 11 are in close contact with each other as shown in FIG. Raises upward. The raised portion can fill a gap between the needle 11 and the plastic bag 10 pierced by the needle 11.

  Furthermore, the adsorbing part 33 has adsorbability with respect to the plastic bag 10. For this reason, the plastic bag 10 adheres firmly to the adsorption | suction part 33 with the pressure from the drinking water with which the plastic bag 10 was filled, and will be adsorbed. More specifically, the edge of the hole of the plastic bag 10 opened by the needle 11 is pressed against the raised portion and the upper surface portion of the adsorption portion 33 by the pressure from the drinking water in the plastic bag 10 and is adsorbed.

  In this manner, the gap between the plastic bag 10 and the needle 11 is filled by the raised portion of the suction portion 33, and the plastic bag 10 is sucked by the suction portion 33 so that the plastic bag 10 and the needle 11 are in close contact with each other. Improves. Therefore, it is possible to prevent water from leaking from the gap between the plastic bag 10 and the needle 11.

  Further, as described above, the gel cover portion 31 formed on the outside surrounding the suction portion 33 is lower than the suction portion 33 on the outer periphery of the suction portion 33 and in the vicinity thereof. For this reason, the depressed portion of the plastic bag 10 first comes into contact with the bottom surface 37 only at the suction portion 33.

  That is, as shown in FIG. 13, when falling into the drinking water supply unit 30 with the weight of the drinking water filled in the plastic bag 10 accommodated in the water server tray 3, the needle 11 is stabbed (in FIG. a) state). FIG. 13 is a diagram schematically illustrating an example of the state (deflection state) of the plastic bag 10 in the drinking water supply unit 30 of the water server tray 3 according to the present embodiment.

  Further, the end portion of the tear of the plastic bag 10 formed by the needle 11 being stabbed is pushed down by the weight of the drinking water along the side surface of the needle 11 and comes into contact with the adsorbing portion 33 ((b in FIG. 13). ) State). As described above, at the bottom surface 37 of the recess 40 of the drinking water supply unit 30, first, only the adsorption unit 33 comes into contact with the plastic bag 10.

  Here, in the plastic bag 10, tension is applied in the vertical direction and downward due to the weight of the filled drinking water, and no wrinkles are formed. In this state, the plastic bag 10 comes into contact with the adsorbing portion 33. That is, the adsorbing portion 33 and the plastic bag 10 can be in surface contact with each other in a state where there is no gap due to wrinkles or the like. For this reason, the adsorbing portion 33 cannot be firmly adsorbed to the plastic bag 10 due to wrinkles, and a gap is formed between the needle 11 and the plastic bag 10, and water leaks from the gap. Can be prevented.

  Furthermore, when the plastic bag 10 is pushed downward by the weight of the drinking water filled, the state shown in FIG. That is, the plastic bag 10 is also in contact with the gel cover portion 31 with the end portion that is torn by the needle 11 in contact with the suction portion 33.

  As shown in FIG. 13, the gel cover portion 31 falls below the suction portion 33 in the vicinity of the suction portion 33. For this reason, the portion of the plastic bag 10 that is adsorbed by the adsorbing portion 33 is maintained in a state where tension is applied toward the gel cover portion 31. Therefore, it is possible to prevent wrinkles from being formed between the plastic bag 10 and the suction portion 33 and to enhance the adsorptivity between the two. In particular, it is preferable that the gel cover portion 31 is formed of a flexible elastic material and has a structure that can be pushed down by the weight of drinking water in the plastic bag 10. When it has such a structure, the pressure which pushes down the plastic bag 10 part which contact | connects the adsorption | suction part 33 below can be enlarged, and the adsorptivity between the plastic bag 10 and the adsorption | suction part 33 can be improved. Moreover, since the plastic bag 10 is firmly adsorbed by the adsorbing portion 33 and the gel cover portion 31 on the outer periphery in this way, even if the drinking water filled in the plastic bag 10 is reduced and deflated. It is possible to prevent wrinkles from occurring near the suction portion 33.

  In addition, what is called an antibacterial agent which is a substance which has antibacterial property may be apply | coated to the needle 11 and the adsorption | suction part 33. FIG.

(Needle protrusion mechanism)
Next, in this embodiment, the needle 11 accommodated in the needle accommodating portion 13 is configured to protrude from the through hole 34 when the water server tray 3 is attached to the main body portion 2. Hereinafter, a mechanism for projecting the needle 11 will be described with reference to FIGS. 2 and 10 described above.

  Specifically, the needle 11 passes through the through hole 34 and protrudes from the bottom portion 19 (drinking water supply unit 30) as follows. That is, before the water server tray 3 on which the plastic bag 10 is placed is attached to the main body 2, as shown in FIG. 2, the needle holder 15 is pressed below the needle housing portion 13 by the spring 14. The pipe receiving part 17 is in a state of projecting from an opening part 36 provided below the needle housing part 13. A plastic bag 10 filled with drinking water is set in the water server tray 3 and placed on the main body 2. More specifically, the leg portions 12 a to 12 d are inserted and fixed in the four insertion holes formed in the upper surface 25 of the main body portion 2, and the needle accommodating portion 13 protruding downward is arranged at the center portion of the upper surface 25. It is fixed by being fitted into the receiving portion 26 formed in the above.

  The receiving portion 26 is adjacent to the cooling tank 21 at the bottom, and an internal pipe 27 communicating with the inside of the cooling tank 21 passes through the center of the bottom of the receiving portion 26 and protrudes upward. For this reason, when the needle accommodating part 13 is fitted into the receiving part 26, the internal pipe 27 and the pipe receiving part 17 are fitted, and the needle holder 15 is pushed upward in the needle accommodating part 13 through the pipe receiving part 17. As a result, the needle 11 joined to the needle holder 15 via the joint portion 16 moves upward along the insertion path 35 and protrudes upward from the through hole 34. The needle 11 is pierced into the plastic bag 10 set in the water server tray 3 and opens a hole in the plastic bag 10.

  As described above, since the needle 11 is accommodated in the needle accommodating portion 13 before the water server tray 3 is attached to the main body portion 2, the user is prevented from being injured at the tip of the needle 11. Can do.

(Modification)
In the present embodiment, the suction portion 33 is provided on the outer periphery of the drinking water supply portion 30 of the water server tray 3 where the through hole 34 is formed. For example, the same polymer as the suction portion 33 is used. You may attach the sheet | seat which consists of gels in the position in which the hole is opened by the needle 11 in the plastic bag 10. FIG. Thus, when the sheet | seat which consists of polymer gel is affixed on the plastic bag 10 side, if the needle 11 is stabbed into the part and a hole is opened, the clearance gap between the plastic bag 10 and the needle 11 will be in this sheet. While filling, the adhesiveness between the plastic bag 10 and the needle 11 can be improved.

  From the foregoing description, many modifications and other embodiments of the present invention are obvious to one skilled in the art. Accordingly, the foregoing description should be construed as illustrative only and is provided for the purpose of teaching those skilled in the art the best mode of carrying out the invention. The details of the structure and / or function may be substantially changed without departing from the spirit of the invention.

  According to the present invention, liquid leakage can be prevented between a plastic bag filled with a liquid and a needle for opening a hole in the plastic bag. In particular, it can be effectively used in a water server in which drinking water is supplied by a plastic bag filled with drinking water.

DESCRIPTION OF SYMBOLS 1 Water server 2 Body part 3 Water server tray 10 Plastic bag 11 Needle 13 Needle accommodating part 14 Spring 15 Needle holder 16 Joint part 17 Pipe receiving part 18 Outer wall 19 Bottom part 20 Support surface 21 Cooling tank 22 Heating tank 23 Cooling water drain Outlet 24 Hot water discharge port 25 Upper surface 26 Receiving part 27 Internal piping 30 Drinking water supply part 31 Gel cover part 32 Needle guide part 33 Adsorption part 33a Protrusion layer 33b Base layer 34 Through hole 35 Insertion path 36 Opening part 37 Bottom face 38 Recessed opening 40 recess 47 opening

Claims (9)

A water server tray on which a plastic bag filled with drinking water to be supplied to the water server body is placed,
A support surface for supporting the plastic bag;
A needle disposed below the support surface and for opening a hole in the plastic bag;
In order to pass the needle through the plastic bag and supply drinking water to the water server main body through the needle, a part of the plastic bag supported by the support surface is dropped downward from the support surface. A drinking water supply unit having a recessed portion,
A water server tray in which at least the surface of the support surface is formed of a material that reduces frictional force against the plastic bag.   The water server tray according to claim 1, wherein the support surface is inclined so as to taper toward the drinking water supply unit. The drinking water supply unit has a circular depression port in which a part of the plastic bag falls into the recess from the support surface,
The water server tray according to claim 1 or 2, wherein the diameter of the drop port is 80 mm or more. The drinking water supply unit is
A through hole for allowing the needle to protrude upward at the bottom surface of the recess;
The water server tray according to any one of claims 1 to 3, further comprising: an adsorbing portion having adsorbability and flexibility with respect to the plastic bag at an outer periphery of the through hole and in the vicinity thereof. The drinking water supply unit further includes an adsorption part cover disposed on an outer portion surrounding the adsorption part so as to hold the adsorption part on the bottom surface of the recess,
5. The water server tray according to claim 4, wherein at least a part of a contact surface of the suction portion cover with the plastic bag is lower than a contact surface of the suction portion with the plastic bag.   6. The water server tray according to claim 5, wherein the suction part cover is formed of an elastic body having a frictional force larger than that of the support surface with respect to the plastic bag. An outer wall that is disposed so as to surround the outer periphery of the support surface and is erected upward from the support surface;
The shape of the horizontal projection surface of the storage chamber, which is a compartment for storing the plastic bag, formed by the support surface and the outer wall is similar to the shape of the horizontal projection surface of the plastic bag,
The water server tray according to any one of claims 1 to 6, wherein a horizontal projected area of the storage chamber is 80% or more of a horizontal projected area of the plastic bag. A water server tray on which a plastic bag filled with drinking water to be supplied to the water server body is placed,
A support surface for supporting the plastic bag;
A needle disposed below the support surface and for opening a hole in the plastic bag;
In order to pass the needle through the plastic bag and supply drinking water to the water server main body through the needle, a part of the plastic bag supported by the support surface is dropped downward from the support surface. A drinking water supply unit having a recessed portion,
The drinking water supply unit has a circular depression port in which a part of the plastic bag falls into the recess from the support surface,
A tray for a water server, wherein the diameter of the depression port is 80 mm or more. A water server tray on which a plastic bag filled with drinking water to be supplied to the water server body is placed,
A support surface for supporting the plastic bag;
A needle disposed below the support surface and for opening a hole in the plastic bag;
In order to pass the needle through the plastic bag and supply drinking water to the water server main body through the needle, a part of the plastic bag supported by the support surface is dropped downward from the support surface. A drinking water supply section having a recessed portion,
An outer wall that is disposed so as to surround the outer periphery of the support surface and is erected upward from the support surface;
The shape of the horizontal projection surface of the storage chamber, which is a compartment for storing the plastic bag, formed by the support surface and the outer wall is similar to the shape of the horizontal projection surface of the plastic bag,
The water server tray, wherein the horizontal projection area of the storage chamber is 80% or more of the horizontal projection area of the plastic bag.

Images