JP2013163532A - Tray for water server - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tray for a water server by which a needle and a plastic bag are brought into close contact with each other to prevent water from leaking from a gap between the needle and a hole formed in the plastic bag.SOLUTION: A tray for a water server includes: a drink water supplying portion 30 used to mount a plastic bag in order to supply drink water filled in the plastic bag to a water server body, and mounting the plastic bag; a needle 11 projecting from the drink water supplying portion, forming a hole in the plastic bag, and feeding the drink water to the water server body; and a needle housing portion 13 housing the needle, and making the housed needle project from the drink water supplying portion 30 during the mounting to the water server body. The drink water supplying portion is formed with a through-hole 34 for making the needle project therefrom, and the outer periphery and vicinity of the through-hole are constituted by a suction portion 33 having suction properties to the plastic bag and being elastic.

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 injury from the sharp tip of this needle, a bottle holder is also proposed 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. (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 a water server that fills a plastic bag with drinking water and supplies drinking water as in Patent Documents 1 and 2 described above, a hole is formed in the plastic bag and the plastic bag to guide the drinking water to the main body of the water server. Water may leak from between the needles. 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, since patent document 3 is a structure which provides a non-slip | skid part in a needle | hook, it can improve adhesiveness in the part which a plastic bag (plastic bag) and a non-slip part contact | connect. However, in Patent Document 3, for example, on the surface on which the plastic bag is placed and the rising portion of the needle from this surface, no anti-slip portion is provided, so that sufficient adhesion cannot be ensured.

  The present invention has been made in view of such circumstances, and a water server capable of enhancing the adhesion between the needle and the plastic bag so that water does not leak from the gap between the needle and the hole formed in the plastic bag. The purpose is to provide a tray.

  A water server tray according to the present invention is a water server tray for supplying drinking water filled in a plastic bag to a water server body in order to solve the above-described problems. A placement surface to be placed, a hole protruding in the plastic bag protruding from the placement surface, a needle for feeding drinking water filled in the plastic bag to the water server body, the needle being accommodated, A container for projecting the needle accommodated from the placement surface when the water server tray is attached to the water server body, and the penetration surface for projecting the needle is provided on the placement surface. A hole is formed, and the outer periphery of the through hole and the vicinity thereof are adsorbing to the plastic bag. It is constituted by the suction member having flexibility with.

  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 above configuration, since the needle is provided, a hole can be formed in the plastic bag placed on the placement surface, and the beverage can be delivered from the hole through the needle to the water server body.

  Moreover, since the accommodating part is provided, the needle can be accommodated and the needle can be protruded from the mounting surface when the water server tray is attached to the water server body. For this reason, since the needle can be accommodated in the accommodating portion except when drinking water is supplied to the water server main body, it is possible to prevent injury due to the protruding needle.

  Further, a through hole for allowing the needle to protrude is formed on the mounting surface, and the outer periphery of the through hole and the vicinity thereof are constituted by an adsorption member. Here, since the adsorbing member has flexibility, the adsorbing member that forms the outer periphery of the through-hole by protruding through the through-hole protrudes in the protruding direction. As a result, the plastic bag and the needle The gap formed between the two can be filled.

  Moreover, since the adsorbing member has adsorbability with respect to the plastic bag, it can be firmly attached to the plastic bag by the pressure from the drinking water in the plastic bag at the protruding outer peripheral portion of the through hole and its vicinity. For this reason, the adhesiveness between a needle and a plastic bag can be improved.

  Therefore, the water server tray according to the present invention has an effect of improving the adhesion between the needle and the plastic bag so that water does not leak from the gap between the needle and the hole formed in the plastic bag.

  Further, in the water server tray according to the present invention, in the configuration described above, the needle includes a cylindrical portion in which a flow path for allowing the drinking water to flow is formed in an extending direction of the needle, and the cylindrical portion includes: An opening surface having an opening through which the drinking water flows is formed by cutting the cylindrical portion obliquely from a predetermined position toward the tip thereof, and the tip portion of the opening surface intersects the opening surface at an acute angle. It may be configured so as to have a pointed surface formed by cutting it diagonally.

  In the water server tray according to the present invention, in the configuration described above, the needle has at least one side opening communicating with the flow path on the side surface closer to the base end side than the opening surface in the cylindrical portion. It may be configured.

  In the water server tray according to the present invention, in the configuration described above, the needle has an outer periphery of the cylindrical portion that comes into contact with an outer periphery of the needle when the needle protrudes from the mounting surface. You may comprise in the position so that it may have the side surface protrusion part which protruded in the taper shape toward the front-end | tip from the base end of this cylindrical part.

  The water server tray according to the present invention is configured as described above, and the water server tray according to the present invention is configured so that water does not leak from the gap between the needle and the hole formed in the plastic bag. There exists an effect that adhesiveness with a bag can be improved.

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 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. It is sectional drawing which shows an example of the contact state of the needle which protruded from the drinking water supply part, the adsorption | suction part, and a plastic bag. 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 a structure in the front-end | tip part of the needle which concerns on this Embodiment. It is a figure which shows an example of the external appearance shape of the front-end | tip part of the needle which concerns on this Embodiment. It is a figure which shows an example of the external appearance shape of the needle which concerns on this Embodiment. It is sectional drawing which shows an example of the state which made the needle shown in FIG. 9 protrude from the drinking water supply part.

  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 FIG. 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.

  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 three layers, an inner layer, an intermediate layer, and an outer layer, and may be made of low-density polyethylene for the inner layer, nylon for the intermediate layer, and unstretched polypropylene for the outer layer. In addition, a two-layer structure using polyethylene having different properties may be used. 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. The capacity of the plastic bag 10 can be selected from a plurality of stages such as 9 liters, 7 liters, and 4 liters, for example, and is determined according to the usage mode of the user.

  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 the present embodiment, the exterior of the main body 2 has a rectangular parallelepiped shape that extends long in the 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, through 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 accommodating portion (described later) In order to insert the (accommodating portion) 13, a recessed portion 26 that is recessed downward is formed.

  The water server tray 3 is a tray for setting the plastic bag 10 filled with drinking water. As shown in FIG. 1, 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 (mounting surface) 19 thereof. A needle accommodating portion 13 that protrudes downward in a cylindrical shape is provided at the center of the bottom portion. 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. Further, four legs 12a, 12b, 12c, and 12d are also provided at the bottom of the water server tray 3. In FIG. 1, 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. In other words, the leg portions 12 a to 12 d can be inserted into the through holes provided in the main body portion 2 and can be fixed to the main body portion 2 by inserting the needle housing portion 13 into the concave portion 26. On the contrary, the leg portions 12a to 12d can be removed from the main body portion 2 by being extracted from the through holes or the needle accommodating portion 13 being extracted from the recess 26.

(Configuration of tray for water server)
Next, a detailed configuration of the water server tray 3 will be described with reference to FIGS. 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. FIG. 3 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. 4 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.

  As shown in FIG. 2, the water server tray 3 is shaped like a mortar in a mortar shape toward the center of the bottom surface of the water server tray 3 at the outer wall 18 standing vertically and the lower end of the outer wall 18. And a bottom portion (mounting surface) 19.

  The outer wall 18 has a stepped cross-sectional shape in which the outer wall 18 is cut out in the vertical direction so that the inner diameter formed by the outer wall 18 is larger in the upper part than in the lower part. For this reason, the plastic bag 10 filled with drinking water can be introduced from above with a larger inner diameter, and the plastic bag 10 can be set in a predetermined position under the smaller inner diameter. And the plastic bag 10 is hold | maintained in the state mounted on the bottom part 19 surface.

  A drinking water supply unit 30 is formed on the bottom portion 19 over a predetermined range from the center thereof to the vicinity thereof. The drinking water supply unit 30 functions as a receiving port for supplying drinking water filled in the plastic bag 10 to the main body unit 2. A cylindrical needle accommodating portion 13 that protrudes downward is formed below the drinking water supply portion 30.

  As shown in FIGS. 2 and 3, a through-hole 34 is formed in the center of the drinking water supply unit 30 for projecting the needle 11 pushed up from below. An insertion path 35 that guides the needle 11 so as to guide the needle 11 to the through hole 34 is formed downward from the through hole 34.

  The cross-sectional shape of the drinking water supply unit 30 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. Moreover, the outer periphery of the through-hole 34 of the drinking water supply part 30 is formed of the adsorption | suction part 33 which consists of a polymer gel which has a copolymer of polyethylene and styrene as a main ingredient. That is, the adsorption part 33 is comprised with the main ingredient and oil, and the structure has the stitch structure which a main ingredient makes. 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 described above, the needle accommodating portion 13 includes the insertion path 35 communicating 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 a long and narrow cylindrical shape with a sharp tip (upper end in FIG. 2). An opening 47 (see FIG. 7) is formed at the tip of the needle 11, and a flow path 44 is formed in the needle 11 to communicate with the opening 47 and to send drinking water toward the lower main body 2. ing. The detailed configuration of the needle 11 will be described later.

  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. In FIG. 2, the joint portion 16 has a cylindrical shape in which the outer diameter of the central portion is larger than the outer diameter of the both end portions in the vertical direction, that is, the both ends are narrowed. 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 receives an internal pipe 27 (see FIG. 6) provided in the main body portion 2. The internal pipe 27 is also joined. As shown in FIG. 2, 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. In addition, a pipe receiving portion 17 for receiving and housing the internal piping 27 connected to the cooling tank 21 in the main body 2 is formed on the end surface (lower end surface) opposite to the side on which the joint portion 16 is fixed. Has been. 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, and is hollow in a shape along the outer periphery of the internal pipe 27 so that the internal pipe 27 can be tightly accommodated therein. It has become.

  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. Yes. 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.

(Configuration of drinking water supply unit)
Here, with reference to FIG. 4, the detailed description of the drinking water supply part 30 is performed. As shown in FIG. 4, the drinking water supply unit 30 includes a gel cover portion 31, a needle guide portion 32, and an adsorption portion (adsorption member) 33.

  In the cross-sectional shape in which the drinking water supply unit 30 is cut out vertically, the gel cover unit 31 is arranged in the upper layer, the needle guide unit 32 is arranged in the lower layer, and the adsorption unit 33 is arranged so as to surround the needle 11 arranged in the center. Yes.

  The gel cover part 31 protects the adsorbing part 33 from being removed from the drinking water supply part 30, and has a mortar shape inclined from the outer peripheral side of the drinking water pack tray 3 toward the adsorbing part 33 as shown in FIG. doing.

  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 FIGS. 3 and 4, the suction portion 33 has a shape in which two layers having different dimensions overlap each other. That is, as shown in FIG. 3, the adsorbing portion 33 has a square shape in which a through hole 34 is formed at the center in a plan view viewed from above. A layer (base layer 33b) having a larger planar dimension than the projecting layer 33a is provided below. 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 surface 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.

  As shown in FIG. 4, the through hole 34 connected to the insertion path 35 formed by the needle guide portion 32 is formed by the suction portion 33. The cross-sectional shape vertically cut out of the through hole 34 is a taper 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 come into 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. FIG. 5 is a cross-sectional view illustrating an example of a contact state between the needle 11 protruding from the drinking water supply unit 30 (mounting surface), the adsorbing unit 33, and the plastic bag 10.

  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.

  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 FIG. 2 and FIG. FIG. 6 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.

  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 through 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 recess 26 formed in the above.

  The recess 26 is adjacent to the cooling tank 21 at its bottom surface, and an internal pipe 27 communicating with the inside of the cooling tank 21 passes through the center of the bottom surface of the recess 26 and protrudes upward. For this reason, when the needle housing part 13 is fitted into the recess 26, the internal pipe 27 and the pipe receiving part 17 are fitted, and the needle holder 15 is pushed upward in the needle housing 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.

(Configuration of needle)
Next, the configuration of the needle 11 according to the present embodiment will be described with reference to FIG. FIG. 7 is a cross-sectional view showing an example of the configuration of the tip portion of the needle 11 according to the present embodiment. The needle 11 is composed of a cylindrical portion 45 in which a flow path 44 is formed. The end portion on the lower end side (end portion on the base end side) of the cylindrical portion 45 is joined to the needle holder 15 via the joining portion 16 as described above. Note that the thickness of the outer wall forming the cylindrical portion 45 of the needle 11 shown in FIG. 7 is appropriately determined according to the usage mode, material, required strength, and the like of the needle 11. The needle 11 may be formed of, for example, plastic such as acrylic resin or polycarbonate resin, or may be formed of metal such as stainless steel, aluminum, or titanium.

  As shown in FIG. 7, the cylindrical portion 45 includes an opening surface 41, an opening 47, and a pointed surface 42 at the tip thereof.

  In the cylindrical part 45 in which the flow path for allowing drinking water to flow is formed in the extending direction of the needle 11, the opening surface 41 is formed from a predetermined position separated from the tip by a few cm (for example, about 1 cm to 1.5 cm). It is formed by cutting the cylindrical portion 45 in an oblique direction toward the tip. An opening 47 for allowing drinking water to flow into the needle 11 is formed as the inner periphery of the opening surface 41. Further, the pointed surface 42 is formed by cutting the tip portion of the opening surface 41 obliquely so as to intersect the opening surface 41 at an acute angle.

  That is, as shown in FIG. 7, the apex 46 of the needle 11 is a position where the opening surface 41 and the tip end surface 42 intersect, and this apex 46 coincides with the position of the opening 47 on the most distal side. As described above, the needle 11 according to the present embodiment is formed with the opening surface 41 and the pointed surface 42 cut from a direction different from the opening surface 41. For this reason, the tip of the needle 11 can be made sharper, and an appropriate hole can be easily formed in the plastic bag 10. Further, when the needle 11 passes through the through hole 34, it is possible to prevent the tip of the needle 11 from being caught by the suction portion 33 that forms the through hole 34.

  The configuration of the needle 11 is not limited to the configuration shown in FIG. For example, as shown in FIG. 8, the needle 11 may be configured to have a grinding part 49 that further grinds obliquely from the inner periphery to the outer periphery from the tip of the opening surface 41 to a predetermined range near the tip. Good. FIG. 8 is a diagram illustrating an example of the external shape of the distal end portion of the needle 11 according to the present embodiment. Thus, the tip of the needle 11 can be further sharpened by providing the grinding part 49 on the opening surface 41 of the needle 11. Moreover, as shown in FIG. 8, the structure by which the at least 1 or more side surface opening 43 was formed in the cylindrical part 45 of the needle 11 may be sufficient. The side surface opening 43 is formed closer to the joining portion 16 than the end position A of the opening surface 41 which is the lowermost side (base end side). Since the side surface opening 43 is formed closer to the joint 16 than the opening 47, it is possible to allow the drinking water accumulated at a position lower than the opening 47 of the needle 11 to flow into the needle 11. That is, even when there is a step from the bottom of the plastic bag 10 to the opening 47, the drinking water can be poured into the needle 11 from the side opening 43, so the amount of drinking water remaining in the plastic bag 10 Can be reduced.

  Further, the needle 11 may be formed so as to have only the opening surface 41 without forming the pointed surface 42.

  Moreover, as shown in FIG. 9 and FIG. 10, the structure provided with the side surface protrusion part 48 formed in the outer periphery of the cylindrical part 45 of the needle 11 with urethane, rubber | gum, etc. may be sufficient. FIG. 9 is a diagram showing an example of the external shape of the needle 11 according to the present embodiment. FIG. 10 is a cross-sectional view illustrating an example of a state in which the needle 11 illustrated in FIG. 9 is protruded from the drinking water supply unit 30.

  As shown in FIGS. 9 and 10, the side protrusion 48 has a shape that becomes wider from the tip of the needle 11 toward the joint 16 side. In other words, it protrudes from the base end (lower end) on the joint 16 side toward the tip so as to be tapered. The side protrusion 48 is disposed at a position in the cylindrical portion 45 that contacts the outer periphery that forms the through hole 34 when the needle 11 protrudes from the through hole 34 of the drinking water supply unit 30. More specifically, when the needle 11 protrudes from the through hole 34, the tip end portion of the side protrusion 48 is a cylinder that is substantially the same height position as the upper surface position of the through hole 34 or a slightly protruding height position. Arranged in the portion 45.

  When the needle 11 is further provided with the side protrusion 48 as described above, when the needle 11 is protruded from the through hole 34, the suction part 33 is pressed by the side protrusion 48 to further effectively rise upward. Can be made. For this reason, the clearance gap between the plastic bag 10 and the needle 11 can be filled, and adhesiveness can be improved more.

  Instead of the needle 11 having the side protrusion 48, a configuration in which the outer periphery of the cylindrical portion 45 protrudes with the same shape and arrangement as the side protrusion 48 may be employed.

  Moreover, the tip shape of the needle 11 was formed by cutting the flow path for allowing drinking water to flow obliquely toward the tip of the cylindrical portion 45 formed in the extending direction of the needle 11 as described above. The opening surface 41 and the pointed surface 42 cut from a different direction from the opening surface 41 were formed. However, the tip shape of the needle 11 may be the following shape.

  That is, the tip shape of the needle 11 is a tapered shape formed by cutting obliquely from a plurality of directions from a predetermined position in the cylindrical portion 45 toward the center of the cross section of the tip position of the cylindrical portion 45, that is, the tip of the sharpened pencil. It is good also as a shape like this. And the opening is provided in the cut surface formed by cut | disconnecting, respectively. In addition, this cut surface may be three surfaces or four surfaces. Or more than that.

(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 15 Needle holder 16 Joint part 17 Pipe receiving part 19 Bottom part 25 Upper surface 26 Recessed part 27 Internal pipe 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 41 Opening surface 42 Pointed end face 43 Side opening 44 Channel 45 Cylindrical part 46 Apex 47 Opening 48 Side protrusion 49 Grinding part

Claims (4)

A water server tray for supplying drinking water filled in a plastic bag to the water server body,
A mounting surface for mounting the plastic bag;
A needle that protrudes from the mounting surface and opens a hole in the plastic bag, and sends drinking water filled in the plastic bag to the water server body;
The needle is housed, and when the water server tray is attached to the water server main body, the housing includes a housing portion that projects the needle from the placement surface,
The mounting surface is formed with a through-hole for projecting the needle, and the outer periphery of the through-hole and the vicinity thereof have an adsorptivity to the plastic bag and have a flexibility. A tray for water servers that is made up of The needle is
The flow path through which the drinking water flows includes a cylindrical portion formed in the extending direction of the needle,
The cylindrical portion is formed by cutting the cylindrical portion obliquely from the predetermined position toward the tip thereof, and has an opening surface having an opening for allowing the drinking water to flow in, and the tip portion of the opening surface is at an acute angle with the opening surface. The water server tray according to claim 1, further comprising a pointed surface formed by cutting obliquely so as to intersect with each other. The needle is
3. The water server tray according to claim 1, wherein the cylindrical portion has at least one side surface opening communicating with the flow path on a side surface closer to the base end than the opening surface. 4. The needle is
When this needle is protruded from the mounting surface, a side protrusion protruding in a tapered shape from the proximal end of the cylindrical portion toward the distal end is provided at the outer peripheral position of the cylindrical portion that contacts the outer periphery of the through hole. The water server tray according to claim 1, further comprising a portion.

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