JP4133871B2 - Hot water bottle - Google Patents

Description

  The present invention relates to a plastic hot water bottle having a pouring part on the upper surface side of a hollow body, which is formed flat as a whole.

  For this type of plastic hot water bottle, several technical proposals have been made, including Japanese Utility Model Publication No. 62-36710 (Registered No. 1961119) developed by the present applicant. Since the above-mentioned device has a bottom surface for standing the main body, it is only necessary to remove the cap when standing hot water, and it is not necessary to hold it by hand, and it is possible to save display space by standing up. Have. However, this is notable for plastic hot water bottles, but there are problems associated with repeated expansion and contraction. Deformation of the main body will eventually cause cracking and water leakage, so we want to minimize it, but it is not enough.

  Further, when compared with a metal hot water bottle, a plastic hot water bottle has a specific heat larger than that of a metal, so that a metal hot water bottle does not feel as hot. However, it is too hot to be used as it is, so it is used by wrapping with an appropriate cloth. In order to make it easier to use, a hot water bottle with a cover as disclosed in Japanese Patent Application Laid-Open No. 2001-170097 has been developed so that the air under the cover warmed by the hot water can be warmed. However, this is considerably more complicated than a normal hot water bottle, and there is a price difference and usage is not simple, so it cannot be replaced as it is.

Japanese Utility Model Sho 62-36710 JP 2001-170097 A

  The present invention has been made paying attention to the above points, and does not deform even when used in the eighth volume of hot water, and air that remains in the upper part of the main body and air that rises by convection in the central recess. It is to provide a hot water bottle that can be warmed softly as a heating medium.

In order to solve the above problems, the present invention is a plastic hot water bottle having a pouring part on the upper surface side of the hollow body, which is formed flat as a whole.
The hollow main body is formed in a circular annular flat shape having a recess in the center, and the portion where the recess is formed becomes a pillar supporting the center of the hollow main body, and the main body annular portion is circular and elliptical or large and small It has a vertical cross-sectional shape in which the circular parts are alternately arranged, thereby forming a shape having a corrugated high and low part, and providing a recess on the upper side of the hollow body to set the position as the lowest position of the pouring part However, a measure was taken to obtain an approximately 8th hot water volume. Therefore, it can be said that the hollow main body in the present invention has a so-called donut shape or a ring shape or a ring shape.

  The hot water bottle according to the present invention is premised on a plastic hot water bottle that has a hollow body that is generally flat in use, and has a pouring part on the upper surface thereof. Yes. The pouring part has a pouring port provided in the hollow body and a cap for closing the pouring port.

The hollow main body of the hot water bottle in the present invention has a circular annular plane shape having a recess at the center. Since it is a circular ring, there is no directionality, expansion and contraction due to heat is even in all directions, and there is a recess in the center, so the part that forms the recess becomes a pillar that supports the center of the hollow body, and it is hollow The strength of the body will be dramatically improved. Therefore, deformation of expansion and contraction due to heat is suppressed and stays at the minimum limit.

The central recess can take a penetrating form through the lower and upper sides of the hollow body, and when the longitudinal cross-sectional shape of the hollow body is substantially circular, the recess has an overall drum shape. Become. However, the central recess may be closed without penetrating, and in this case, the central recess is close to a truncated cone shape divided into a lower side and an upper side with the closed part as a boundary. The top and bottom are almost drum-shaped.

The vertical cross-sectional shape of the main body annular portion of the hollow main body is substantially circular. In the present invention, the term “substantially circular” includes not only a circular shape but also an elliptical shape and a shape close to a circle. Since the longitudinal cross-sectional shape of the main body annular portion is substantially circular, the influence of heat acts evenly in all directions and is prevented from being displaced in one direction. In addition, the main body annular portion can be formed into a wave-shaped high and low portion by alternately arranging circular and elliptical or large and small circular portions in the longitudinal section. This engages the corrugations and is convenient for stacking.

  In the hot water bottle of the present invention, it is not necessary to make the pouring part particularly high, and it is only necessary to obtain a hot water amount of about the eighth minute. For this reason, it is possible to prevent the pouring part from coming out of the upper surface of the hollow body, and it is less likely to get in the way. The amount of hot water in the eighth minute means that there is a space in the upper part about the second minute inside the hollow body, and since the specific heat of air is much smaller than that of water, the heat capacity of the upper part of the hollow body becomes smaller. It becomes possible to warm up softly. In the present invention, the eighth hot water amount means that it does not necessarily need to be full. In conventional hot water bottles, attention has been paid to fill the tank as much as possible. However, in the hot water bottle of the present invention, when the hot water is cooled, the inside air will not dent even if it shrinks. Is also good.

  The central recess is surrounded by a circular annular hollow main body, and the air in the central recess is warmed by hot water inside the main body to form a gradually rising heating space. In addition, since the hot water bottle of the present invention has the above-mentioned action depending on the space inside the main body, the hot water bottle of the present invention has a heating function by the air inside the hot water bottle main body and the recess in the center, and similarly has the heating function by the air. Even if a cover such as JP-A-2000-170097 is not used, a soft heating effect equivalent to that can be expected.

  The hot water bottle of the present invention can also be provided with a handle, but it preferably has a solid structure that is not hollow. This is because in the case of a handle having a hollow structure, there is a possibility that the hot water temperature can be felt directly by the hand through the hollow main body. Moreover, the hollow main body can be provided with a support portion on the side surface of the main body, with the pouring portion placed below the hot water main body. In this way, the present invention becomes a standing hot water bottle.

  Since the present invention is configured and operates as described above, there is no fear of deformation when used in the eighth water amount, and by the convection in the hollow in the center of the hollow body and the warm air in the space remaining in the upper part. The rising air can be warmed softly as a heating medium, and the hollow body can be prevented from being deformed even when the expanded air in the internal space contracts due to a drop in hot water temperature.

Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. FIG. 1 shows an example 1 of a hot water bottle according to the present invention, in which a hollow 12 that penetrates is provided at the center of a hollow main body 11 having a circular annular planar shape. Since the longitudinal cross-sectional shape of the main body annular portion constituting the hollow main body 11 is substantially circular, the shape of the recess 12 is substantially drum-shaped. See FIG.

The hollow body 11 has a configuration in which the longitudinal cross- sections of the circular portion 14 and the elliptical portion 15 appear alternately, and the high portion 16 and the low portion 17 are corrugated on the outer surface by the circular portion 14 and the elliptical portion 15. It is formed. The illustrated hollow body 11 is made of plastic formed by blow molding, and is divided into an upper side 18 and a lower side 19 with a parting line 13 as a boundary.

  On the upper side 18 of the hollow body 11, a pouring port 22 constituting a pouring portion 21 is provided by molding. The pouring port 22 is formed to a height that allows the cap 23 to fit in the height 16 of the hollow main body 11 or slightly protrude in a use state in which the cap 23 is screwed together and closed. The hollow body 11 has a lower portion 17 due to the elliptical portion 15, which lowers the ceiling of the inner space 24 of the hollow body 11, and thus restricts the movement of hot water in the inner space 24. Due to these structural forms, the internal space 24 of the hollow body 11 is set so that an amount of hot water that is about the eighth of a full tank enters.

  Such a repetitive shape of the high portion 16 and the low portion 17 can be meshed when stacking hot water bottles and stabilize stacking. Also, the pouring part 21 is provided by forming a dent 25 on the upper side 18 of the annular body part and sinking it, thereby reducing the protrusion of the cap 23 and facilitating stacking. Furthermore, the hollow main body 11 has a support portion 26 on the side surface of the main body on which the hollow main body 11 is placed with the pouring portion 21 facing down.

  In the hot water bottle of the present invention having such a configuration, hot water is poured up to around the chain line 27 shown in FIG. For example, when the hot water is poured up to the eighth minute, the space 28 of the second minute remains in the upper part of the internal space, and the outer surface of the upper part of the main body is heated through the air in the space. Further, in the central recess 12, the air there is gradually warmed from the surrounding annular portion of the main body to form an updraft 29, and a warming effect by the warm air inside and outside these has a soft heating effect. The handle 30 is solid and is not easily affected by the hot water temperature.

  As already mentioned in part, the central recess 12 does not have to be penetrating. 4 shows an example of a closed central recess. In this case, the closed portion 31 is divided into an upper recess 32 and a lower recess 33, and the lower recess 33 becomes a heat reservoir. While it becomes a source for supplying heat to the upper recess 32, the upper cavity 32 is heated from the lower recess 33 and the surrounding main body annular portion to form the rising airflow 34, and the example 1 shown in FIGS. Similarly, a soft heating effect using air as a medium is expected. In the example of FIG. 4, the same components as those in FIGS. Therefore, reference numerals are used and detailed description is omitted.

The perspective view which shows Example 1 of the hot water bottle which concerns on this invention. The longitudinal cross-sectional view by the cutting line which passes along the handle and pouring part of the thing of FIG. FIG. 3 is a longitudinal sectional view in the cross direction with FIG. 2. The longitudinal cross-sectional view which shows Example 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Hollow main body 12, 32, 33 Recess 14 Circular part 15 Oval part 16 High part 17 Low part 18 Upper part 19 Lower side 21 Pouring part 24 Internal space 26 Support part 28 Space

Claims (4)

A plastic hot water bottle having a pouring part on the upper surface side of the hollow body, which is formed flat as a whole,
The hollow main body is formed in a circular annular flat shape having a recess in the center, and the portion where the recess is formed becomes a pillar supporting the center of the hollow main body, and the main body annular portion is circular and elliptical or large and small It has a vertical cross-sectional shape in which the circular parts are alternately arranged, thereby forming a shape having a corrugated high and low part, and providing a recess on the upper side of the hollow body to set the position as the lowest position of the pouring part A hot water bottle characterized by having a structure that can obtain the amount of hot water in the eighth minute. The hot water bottle according to claim 1, wherein the hollow main body has a support portion on a side of the main body where the hollow main body is erected with the pouring portion at a lower position. The hot water bottle according to claim 1 or 2, wherein the hollow in the center of the hollow body has a penetrating shape passing through the lower side and the upper side of the hollow body, and has a generally drum-like shape as a whole. The hot water bottle according to claim 1 or 2, wherein the hollow in the center of the hollow body is closed and is divided into a lower side and an upper side of the hollow body.

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