JP2019217099A - Portable beverage container - Google Patents

Abstract

To suppress the size of a plug member and a tap and make it easy to use even for a small person, in a portable beverage container opened by rotating the plug member.SOLUTION: A portable beverage container 11 includes: a container body 12 having an opening in an upper edge; a tap member 13 internally fitted to the opening of the container body 12; and a plug member 15 internally fitted to the tap member 13 rotatably, and opened by upward movement and closed by downward movement. The size in the radial direction of a standing wall part 32 projecting upward from the opening of the container body 12 in the tap member is made an outer diameter of the size balanced with an upper end edge 25 of the container body 12. Also, an outer circumference wall part 52 continuously arranged from the upper edge of a body part 51 fitted into the tap member 13 and covering the standing wall part 32 of the tap member 13 is formed in the plug member 15, and a concave surface part 53 recessed in a half bowl shape is formed to one side in the circumferential direction. An arc-shaped through hole 54 in a plan view for projecting a part of the circumferential direction of the standing wall part 32 is formed in the concave surface part 53.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a portable beverage container, and more particularly, to a portable beverage container capable of drinking a beverage simply by rotating without removing a lid.

  A portable beverage container that does not require removal of a lid includes, for example, one disclosed in Patent Document 1 below.

  The portable beverage container has a container body having an opening at an upper end, a spout member (lower member) attached to the opening of the container body, and is rotatably fitted in the spout member and opened by upward movement. A plug member (plug) that is plugged and closed by downward movement is provided. The lower part of the spout member is formed in an inner and outer double wall structure that covers the upper end part of the container body, and a spout is formed at a part of the upper end part of the spout member in the circumferential direction. The plug member that covers the spout member has a spout exposed portion in a shape that is cut off obliquely in a part of the circumferential direction, and the spout of the spout member protrudes upward at the spout exposed portion. It has an arc-shaped drinking-hole protruding hole in plan view.

  In other words, the spout is projected upward when rotated to the left, and is accommodated in the plug member when rotated to the right.

  However, the lower part of the spout member has an inner / outer double wall structure, and the diameter of the spout member is larger than the opening of the container body, so that the diameter of the plug body becomes larger.

  For this reason, there were cases where it was difficult for people with small hands to rotate the plug. Also, if the diameter of the plug is large, the arc of the spout becomes large, so that when the mouth is put on the spout, the drink tends to spread on both sides, making it difficult for others to drink.

Japanese Patent No. 5970336

  A main object of the present invention is to suppress the size of a plug member and a drinking spout so that it is easy to use even for a small person.

  Means for that are a container body having an opening at an upper end, a drinking member fitted inside the opening of the container body, and a rotatable inner fitting to the drinking member and opening by upward movement. A portable beverage container provided with a stopper member that is closed by downward movement, wherein the drinking member is formed with a fixing portion fixed to the container body, and an upright wall portion protruding above the opening, The plug member includes a main body portion that fits into the fixing portion of the spout member, and an outer peripheral wall portion that is continuously provided from an upper end of the main body portion and covers the upright wall portion of the spout member. In the upright wall portion of the mouth member, a seating portion close to an upper end edge of the container body is formed, and a portion of the upstanding wall portion above the seating portion has an outside size corresponding to the seating portion. The plug member is formed with a diameter from the center in plan view. A concave curved surface portion concaved in a half bowl shape is formed, and a portion corresponding to the rising wall portion of the drinking spout member in the concave curved surface portion has a circular arc shape in a plan view in which a part of the rising wall portion is projected. It is a portable beverage container in which a through hole is formed.

  In this configuration, the upright wall portion protruding above the fixed portion fitted inside the container main body has an outer diameter of a size corresponding to the seating portion at a portion above the seating portion close to the upper end edge of the container main body. Thus, the upright wall portion of the spout member, the outer peripheral wall portion located on the outer periphery than the main body portion of the plug member that is fitted inside the spout member, and the diameter of the through-hole portion of the concave curved surface portion are suppressed from increasing. I do. On the other hand, the semi-cup-shaped concave curved surface portion of the plug member sufficiently exposes the cut wall portion of the spout member.

  According to the present invention, the diameter of the outer peripheral wall of the plug member can be prevented from increasing, so that even a person with a small hand can easily rotate. In addition, since the increase in the diameter of the spout member is also suppressed, the spread of the beverage on both sides when the spout is put on the mouth can be suppressed by the fundamental shape. That is, it is possible to obtain a state in which even a person with a small mouth can easily drink. In addition, since the drinking mouth is sufficiently exposed by the concave curved surface portion, the structure is easy to drink from this point as well.

The perspective view of a portable drink container. The top view of a mobile drink container. The perspective view of the isolation | separation state of a portable drink container. AA sectional drawing of FIG. BB sectional drawing of FIG. 3. CC sectional drawing of FIG. The DD sectional view of FIG. The perspective view which looked at the drinking spout member from the upper part. The perspective view which looked at the drinking spout member from the lower part. The top view of a drinking spout member. The EE sectional view and the FF sectional view of FIG. The partially broken side view of a plug member. FIG. 4 is an enlarged cross-sectional view showing a rotation restricting unit. Sectional drawing which shows the rotation control means in a closed state. Sectional drawing which shows the rotation control means in an opened state.

  One embodiment for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 shows a perspective view of the portable beverage container 11. This figure shows that the plug is opened by rotating in the direction indicated by the arrow. FIG. 2 is a plan view showing a transition from the closed state of (a) to the opened state of (b).

  As shown in FIG. 3, the portable beverage container 11 includes a container body 12, a drinking member 13, and a plug member 15. The container main body 12 is constituted by a metal double container having a heat retaining function, and has an opening at the upper end of a bottomed cylindrical shape. The spout member 13 is fitted inside the opening of the container body 12. The stopper member 15 is rotatably fitted inside the spout member 13 and is opened by upward movement and closed by downward movement.

  First, the container body 12 will be described. The upper end portion of the container body 12 has a short cylindrical portion 21 having a circular shape in a plan view, and a closed step portion 22 projecting to the outer peripheral side is continuously provided on the outer periphery below the short cylindrical portion 21. On the other hand, a female screw part 23 with which the spout member 13 is screwed is formed on the inner periphery below the short cylindrical part 21. Below the female screw portion 23, a sealing step portion 24 that protrudes toward the inner peripheral side is continuously provided.

  Next, the drinking spout member 13 is made of a synthetic resin and is fixed to the container body 12, and an upright wall portion 32 that projects above the opening of the container body 12 when fixed to the container body 12. have. As shown in FIG. 4, which is an AA sectional view of FIG. 2, FIG. 5, which is a BB sectional view, FIG. 6, which is a CC sectional view, and FIG. 7, which is a DD sectional view, as shown in FIG. The portion from 31 to the upright wall portion 32 has a cylindrical shape. The height of the upright wall 32 is the same or substantially the same over the entire circumference.

  On the outer peripheral surface of the fixing portion 31, a male screw portion 33 that is screwed into the female screw portion 23 of the container body 12 is formed. The external thread portion 33 is formed by a single thread 33a, and has two to three threads as shown in FIG. 8 which is a perspective view from above and FIG. 9 which is a perspective view from below. Have been. Specifically, the screw thread 33a of the male screw part 33 has an upper end 33b formed on the side having a part of the drinking part 34 in the circumferential direction of the upright wall part 32 (see FIG. 8), and from there downward, About 2.5 to 2.7 turns are formed.

  At the lower end of the fixing portion 31, a bottom plate portion 35 for closing the lower end surface is integrally formed. The bottom plate 35 has through holes at both ends in the diameter direction with the center point interposed therebetween. One of the through-holes is a distribution port 35 a through which the beverage passes, and is formed on the side having the drinking port 34. The other through-hole located on the side opposite to the circulation port 35a is a ventilation hole 35b. As shown in FIG. 9 and FIG. 10 which is a plan view, the distribution port 35a is formed in a shape close to a square in plan view, and the ventilation hole 35b is formed in a circular shape in plan view.

  A lower end step portion 36 having a smaller diameter than the male screw portion 33 is formed on an outer peripheral surface at a lower end portion of the fixing portion 31. An annular sealing gasket 37 is held by the lower end step portion 36, and is configured to seal the space between the lower end step portion 36 and the sealing step portion 24 of the container body 12.

  At the lower end of the upright wall portion 32 of the drinking spout member 13, a seating portion 38 that is close to the upper end edge 25 of the container body 12 is formed. That is, the lower end of the upright wall portion 32 is formed to have a diameter larger than that of the fixed portion 31 and protrudes in a flange shape in the outer peripheral direction. A portion of the upright wall portion 32 above the seating portion 38 is formed with an outer diameter having a size corresponding to the seating portion 38. In other words, the diameter of the upright wall portion 32 is set to a size that does not greatly protrude from the upper end edge 25 of the container main body 12 and is equal to or slightly larger than the outer diameter of the upper end edge 25 of the container main body 12. ing.

  The above-described drink that collects and guides the beverage flowing through the distribution port 35a to a part of the upright wall portion 32 in the peripheral direction, that is, the side corresponding to the distribution port 35a in the circumferential direction in relation to the distribution port 35a described above. An opening 34 is formed. As shown in FIG. 4, FIG. 5, and FIG. 10, the drinking spout portion 34 is formed in a groove shape having an appropriate width by being displaced in the outer circumferential direction more than other portions. The drinking mouth portion 34 has a recessed portion 34a on the outer peripheral surface that the lips touch when drinking directly with a mouth (see FIG. 8).

  A decorative member 39 is formed on the outer peripheral surface of the upright wall 32 except for the spout 34 in the circumferential direction. In other words, a concave step portion 40 having a C-shaped cross section is formed at a portion where the decorative member 39 is formed, and the decorative member 39 made of synthetic resin is integrally molded with the concave step portion 40. The decorative member 39 contributes to making the member constituting the spout member 13 equal in thickness and obtaining a spout portion 34 having a natural shape.

  The concave step portion 40 has a plurality of ridges 40a extending in the cross-sectional direction in order to enhance the integrity with the decorative member 39, and the outer peripheral sides of these ridges 40a are vertically aligned perpendicular to the cross-sectional direction. An extending columnar portion 40b is formed. The decorative member 39 is formed of a synthetic resin having a different appearance such as color from the synthetic resin forming the fixing portion 31 and the upright wall portion 32.

  A female screw portion 41 for screwing the plug member 15 is formed on the inner peripheral surface of the spout member 13, specifically, on the inner peripheral surface of a portion corresponding to the fixing portion 31. FIG. 11A shows a cross-sectional view taken along the line EE of FIG. 10, and FIG. 11B shows a cross-sectional view taken along the line FF of FIG.

  The female screw portion 41 is configured by a plurality of threads having a divided shape that is not continuous in the entire circumferential direction. One side divided by a virtual line passing through the center in the width direction of the mouth portion 34 and the center of the bottom plate portion 35, that is, three threads on the left side when viewing the mouth portion 34 in the back is three (see FIG. 11). (See (a)), the other side, that is, the right-hand thread when viewed from the back of the spout portion 34 is two (see (b) of FIG. 11), and each is vertically spaced at a predetermined interval. They are arranged at equal intervals.

  More specifically, the female screw portion 41 has a main screw thread 41a having a length of about a quarter turn and a shorter screw thread 41b shorter than the main screw thread 41a. The thread on the left inner peripheral surface has an upper thread 41b and a middle thread and a lower thread 41a. The screw thread on the inner peripheral surface on the right side when the drinking spout portion 34 is viewed in the back has the upper thread 41b and the lower thread 41a.

  As shown in FIG. 10, the slave thread 41 b has a thread crest 42, that is, an inner peripheral surface having a substantially linear shape, and a triangular notch 43 in a plan view at an intermediate portion in the longitudinal direction. have.

  The main thread 41a has a top portion 42 of the thread, that is, an inner peripheral surface having an arc shape. The main thread 41a at the lower portion of the left inner peripheral surface when the drinking mouth portion 34 is viewed from the back has a stopper 44 vertically suspended at an intermediate portion in the longitudinal direction. The main thread 41a at the middle of the left inner peripheral surface when the drinking mouth part 34 is viewed from the back is a height of the thread within a range from the upper end in the inclined direction to a portion corresponding to the stopper 44 of the lower main thread 41a. It has a low step portion 45 for lowering the height. The main thread 41a at the lower part of the right inner peripheral surface when the drinking mouth part 34 is viewed from the back has a shape that does not have a special configuration such as the stopper 44 and the low step part 45 described above.

  Lastly, as shown in FIG. 3, the plug member 15 includes a main body 51 that fits into the fixing portion 31 of the spout member 13, and an upright wall portion of the spout member 13 that is continuously provided from an upper end of the main body section 51. 32 is provided. Further, a concave curved surface portion 53 that is recessed in a semi-bowl shape from the center portion of the plug member 15 in a plan view to one side is formed, and a portion corresponding to the standing wall portion 32 of the drinking member 13 in the concave curved surface portion 53 is provided with a standing wall portion. An arc-shaped through-hole portion 54 is formed to project a part of 32 in the circumferential direction.

  The main body 51 has a cylindrical shape large enough to enter the inside of the spout member 13, and as shown in FIG. 4 and the like, a lower member 55 constituting a lower portion of the main body 51, and integrated with the lower member 55. It is composed of an upper member 56 constituting the upper part of the main body 51. A heat insulating material 57 is housed inside the main body 51.

  In addition, a small-diameter holding step 58 is formed on the outer peripheral edge of the lower end of the main body 51 so as to retreat from the outer peripheral surface of the main body 51, and the holding step 58 stops between the holding step 58 and the spout member 13. The stopper packing 59 for water is held. The plug packing 59 has a U-shaped cross section whose outer peripheral side is open. In other words, the plug packing 59 includes an annular fixed piece 59a extending in the outer peripheral direction in contact with the upper surface of the holding step portion 58 from below, an annular fixed ring 59b suspended from the inner peripheral edge of the fixed piece 59a, and a lower end of the fixed ring 59b. And an annular lip portion 59c extending in the outer peripheral direction at an appropriate distance from the fixing piece 59a. Among them, the lip portion 59c is configured to contact from above the back side of the lower end step portion 36 holding the sealing packing 37 of the drinking spout member 13.

  Above the plug packing 59 on the outer peripheral surface of the main body 51, a male screw portion 60 that is screwed into the female screw portion 41 of the spout member 13 is formed. As shown in FIG. 12 which is a side view of the plug member 15, the male screw portion 60 includes a single thread 60a. FIG. 12A is a side view showing the left side when the concave curved surface portion 53 is viewed from the back, and FIG. 12B is a side view showing the left side when the concave curved surface portion 53 is viewed from the back. FIG.

  In other words, at the position of the stopper that exposes the spout portion 34 from the through-hole portion 54, the side surface seen in FIG. 12A is the spout portion 34 of the female screw portion 41 of the spout member 13 described above. 11 is a side surface corresponding to the thread ((a) in FIG. 11) of the left inner peripheral surface when looking at the back, and the side surface seen in (b) of FIG. The side surface corresponding to the thread ((b) in FIG. 11) of the inner peripheral surface on the right side when the drinking mouth portion 34 is viewed from the back. At the position of the stopper for accommodating the spout portion 34 in the outer peripheral wall portion 52, the side surface seen in FIG. 12A is viewed from the back of the spout portion 34 of the female screw portion 41 of the spout member 13. The side surface corresponding to the screw thread ((b) in FIG. 11) of the right inner peripheral surface at the time, and the side surface seen in (b) of FIG. Is a side surface corresponding to the screw thread ((a) in FIG. 11) of the left inner peripheral surface when looking back.

  The screw thread 60a of the male screw part 60 is formed with two to three threads so that the upper end 60b and the lower end 60c are located on the right outer peripheral surface ((b) of FIG. 12) when the concave curved surface part 53 is viewed at the back. ing. The three ridges are on the right outer peripheral surface having the upper end 60b and the lower end 60c of the thread 60a. The lower end 60c of the screw thread 60a is a portion that contacts the stopper 44 of the female screw portion 41 in the closed state (see FIG. 11A).

  The pitch of the screw thread 60a of the male screw part 60 of the plug member 15 is such that the plug packing 59 is rotated by 180 degrees of the plug member 15 together with the screw thread of the female screw part 41 of the spout member 13, and the water stop position (position of the plug). Is set so that it can be moved up and down between a position where the water stoppage is released and the beverage can flow out (opening position).

  The male screw portion 60 of the main body 51 is formed with a part of rotation restricting means for restricting the rotation between the open position and the closed position. The rotation restricting means is formed between the spout member 13 and the plug member 15, and is formed, for example, in a notch formed in a part of one screw thread in the circumferential direction and in a longitudinal direction in the other screw root. It consists of a projection that engages and disengages with the notch.

  A part of the rotating means formed on the male screw part 60 of the main body part 51 is the above-mentioned projection. As shown in FIG. 12 (a), the protrusion 61 is formed from the uppermost portion of the thread 60a at the middle position of the left outer peripheral surface when the concave curved surface portion 53 is viewed from the back, and As shown in FIG. 12 (b), the concave curved surface portion 53 is formed at the top and the bottom of the thread at the intermediate position of the right outer peripheral surface when the concave curved surface portion 53 is viewed at the back. The cross-sectional shape of the protrusion 61 is an equilateral trapezoid. The height of the protrusion 61 is set to about half the height of the thread 60a. The heights of the two protrusions 61 are the same.

  To add in relation to the height of the protrusion 61, the height of the low step portion 45 of one main thread 41a in the female screw portion 41 of the drinking spout member 13 is a height that allows the protrusion 61 to enter. A stopper 45a is formed at the lower end of the low step portion 45.

  The notch in which the protrusion 61 is locked is a notch 43 formed in the slave thread 41b of the female screw portion 41 of the spout member 13, as shown in FIGS. FIG. 13 shows a state in which the protrusion 61 is locked in the notch 43. In FIG. 13, P indicates the center of rotation.

  The outer peripheral wall portion 52 of the plug member 15 is formed of the above-described upper member 56, and after extending in the outer peripheral direction from the upper end of the main body portion 51, at a position covering the outer peripheral surface of the upright wall portion 32 of the drinking mouth member 13. A cylindrical tubular portion 62 is provided vertically.

  The lower end of the cylindrical portion 62 in the outer peripheral wall portion 52 of the plug member 15 is an opposing portion 52a that directly opposes the upper surface of the closed step 22 on the outer periphery of the upper end portion of the container body 12 when the container is closed as shown in FIG. That is, as shown in FIG. 1, only the plug member 15 exists above the container body 12 in appearance.

  The upper end surface of the plug member 15 has a concave bay-shaped surface 63 that is concaved in a mortar shape as shown in FIGS. The depth of the concave bay surface 63 is appropriately set. The concave curved surface portion 53 formed on the plug member 15 has a bowl-like shape that is more oblique than the obliquely cut shape, and the height of the lower end of the concave curved surface portion 53 is, as shown in FIG. The height at which the lower end of the decorative member 39 of the mouth member 13 is not exposed, in other words, the lower end of the upright wall portion 32 of the mouth member 13 while exposing the mouth portion 34 to a sufficient height as shown in FIG. It is set to a height that can be covered.

  The radial size of the through-hole portion 54 formed in the concave curved surface portion 53 corresponds to the thickness of the upright wall portion 32 of the spout member 13, and the circumferential size of the through-hole portion 54. Is for making the whole of the drinking spout 34 exposed.

  In the portable beverage container 11 configured as described above, the spout member 13 is fixed to the opening of the container body 12, and the plug member 15 is fitted to the spout member 13 for use. In the closed state in which the plug member 15 is screwed to the spout member 13 as far as the end, as shown in FIG. 14, the male screw portion 60 of the plug member 15 and the female screw portion 41 of the spout member 13 are engaged with each other, and the plug packing is formed. Seal at 59. At this time, of the protrusions 61 of the plug member 16, the protrusion 61 on the right outer peripheral surface when the concave curved surface portion 53 is viewed from the back is the stopper of the main thread 41 a located at the middle stage of the facing female screw portion 41. It comes into contact with the portion 45a (see FIG. 14A). At the same time, the projection 61 on the left outer peripheral surface when the concave curved surface portion 53 is viewed in the back is engaged with the notch 43 of the upper threaded thread 41b on the opposed female screw portion 41 (see FIG. 14B). ). Since one of the protrusions 61 is engaged with the notch 43 of the slave screw thread 41b, it is possible to restrict the position with a clicking sound.

  When the plug member 15 in the closed state is rotated 180 degrees to the left as shown in FIGS. 1 and 2, the plug member 15 rises to a state as shown in FIG. That is, of the protrusions 61 of the plug member 16, the protrusion 61 on the left outer peripheral surface when the concave curved surface portion 53 is viewed from the back is engaged with the notch 43 of the upper threaded thread 41 b on the opposed female screw portion 41. (See FIG. 15A). At the same time, the projection 61 on the outer peripheral surface on the right side when the concave curved surface portion 53 is viewed from the back is engaged with the notch 43 of the upper threaded thread 41b at the upper stage of the facing female screw portion 41 (see FIG. 15B). ). Since both projections 61 are engaged with the notches 43 of the slave screw thread 41b, a moderating and firm position control with a clicking sound can be achieved.

  For this reason, a stable open state can be reliably obtained when opening, and the distinction between open and closed is easy to recognize and easy to use. The configuration of the rotation restricting means for this purpose is a notch 43 provided on the screw thread and a projection 61 provided on the screw root, so that the structure is simple, high-performance and easy to care.

  In addition, since the radial size of the upright wall portion 32 of the spout member 13 is a size corresponding to the seating portion 38, the outer peripheral wall portion 52 of the plug member 15, specifically, the size of the cylindrical portion 62 is reduced. The increase can be suppressed. Therefore, it is possible to obtain the plug member 15 that can be easily rotated even by a person with a small hand.

  Regarding the ease of rotation, since the plug packing 59 provided on the plug member 15 has a U-shaped cross section, the resistance can be reduced in spite of obtaining good sealing properties, so that it is easy to rotate from this point as well. It will be. In addition, cleaning is easy due to its shape.

  Since the radial size of the upright wall portion 32 of the spout member 13 can be suppressed from increasing, the size of the spout portion 34, in other words, the radius of curvature of the arc can be naturally reduced (increased in curvature). Spreading the beverage on both sides when drinking with the mouth 34 directly attached to the mouth can be suppressed. For this reason, a structure that is easy for even a person with a small mouth to drink is obtained.

  The spout portion 34 from which the beverage is discharged is exposed to a sufficient height due to the presence of the concave bay-shaped surface 63 and the concave curved surface portion 53 of the plug member 15. An easy state is obtained.

  As described above, the size of the upper part of the drinking member 13 in the radial direction can be suppressed, so that the shape of the upper part of the portable beverage container 11 can be made slim, and a beautiful design feeling can be obtained.

  In particular, since the cosmetic member 39 is provided on the outer peripheral surface of the spout member 13, a desired beautiful appearance can be obtained by harmonizing with the appearance of the container body 12 or the plug member 15 or by adding an accent with the cosmetic member 39. Can be

  Furthermore, since the lower end of the spout member 13 does not appear in appearance, it can be easily recognized that the opening and closing operation is performed by rotating the plug member 15.

  The above configuration is an embodiment of the present invention, and the present invention is not limited to only the above-described configuration, and other configurations can be adopted.

  For example, a portion of the mouth member 13 opposite to the mouth portion 34 may be cut out in a shape corresponding to the concave curved surface portion 53. When the plug is closed, a portion projecting above the through hole 54 can be eliminated.

DESCRIPTION OF SYMBOLS 11 ... Portable drink container 12 ... Container main body 13 ... Drinking member 15 ... Plug member 22 ... Closing step part 31 ... Fixed part 32 ... Standing wall part 34 ... Drinking part 38 ... Seating part 39 ... Makeup member 41 ... Female screw part 43 .. Notch 51... Body part 52... Outer peripheral wall part 52 a... Opposing part 53... Concave curved surface part 54.

Claims (6)

A container body having an opening at an upper end, a spout member fitted in the opening of the container body, a rotatable inner fit to the spout member, opening by upward movement, and closing by downward movement; A portable beverage container provided with a stopper member,
In the spout member, a fixing portion fixed to the container body, an upright wall portion protruding above the opening is formed,
In the plug member, a main body portion that fits into the fixed portion of the spout member, and an outer peripheral wall portion that is continuously provided from an upper end of the main body portion and covers the upright wall portion of the spout member is formed,
A seating portion is formed on the upright wall portion of the drinking spout member near an upper edge of the container body,
A portion of the upright wall portion above the seating portion is formed with an outer diameter having a size corresponding to the seating portion,
The plug member is formed with a concave curved surface portion that is recessed in a semi-cup shape from the central portion in plan view to one side,
A portable beverage container in which a through-hole having a circular arc shape in a plan view is formed at a portion of the concave curved surface portion corresponding to the upright wall portion of the drinking spout member so as to project a part of the upright wall portion. 2. The portable beverage container according to claim 1, wherein an opposing portion is formed at a lower end of the outer peripheral wall portion of the plug member, the opposing portion directly opposing an upper surface of a closed step on an outer periphery of an upper end portion of the container main body when the plug member is closed. A spout is formed in a part of the upright wall in the circumferential direction,
A rotation restricting means for restricting rotation to the position of the opening that exposes the spout from the through-hole and the position of the plug that accommodates the spout in the outer peripheral wall, the spout member and 3. The portable beverage container according to claim 1, wherein the portable beverage container is formed between the stopper member and the stopper member. The rotation restricting means is constituted by a notch formed in a part of one thread in a circumferential direction, and a protrusion formed vertically in the other thread root and engaging and disengaging from the notch. 4. The portable beverage container according to 3. The portable beverage container according to any one of claims 1 to 4, wherein the upright wall has a cylindrical shape. The portable beverage container according to claim 5, wherein a decorative member is formed on an outer peripheral surface of a portion other than the drinking mouth portion in a circumferential direction of the upright wall portion.

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