Cap unit and container with cap

Abstract

To provide a cap unit capable of enhancing the degree of freedom in appearance while preventing a mouth forming member from being unintentionally detached from an outer cylinder member of a cap body in a mouth attachment / detachment mechanism.SOLUTION: A cap unit of the present invention includes a cap body 7 which closes an upper opening 2d of a container body 2, and a lid body 9 which is freely rotatably attached to the cap body 7 via a hinge portion 8. The cap body 7 has an outer tube member 10 which has an opening 10b at its upper part, a mouth forming member 11 which has a liquid passage port 14 which is opened and closed by rotation of the lid body 9, and a mouth attachment / detachment mechanism 15 which detachably attaches the mouth forming member 11 to the opening 10b of the outer tube member 10. The mouth attachment / detachment mechanism 15 has a structure in which the mouth forming member 11 is attached to the opening 10b of the outer tube member 10 by sliding the mouth forming member 11 against the inner undersurface of the outer tube member 10.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a cap unit and a container with a cap.

Background Art

[0002] Conventionally, there has been a container with a cap provided with a cap unit that is detachably attached to a container body having an open upper portion.

[0003] Further, among cap units, in a cap body that closes the upper opening of the container body, there is one provided with an outer cylinder member having an opening at the upper portion, an orifice forming member that is attached to the opening of the outer cylinder member and is provided with a liquid passage port that communicates with the inside of the container body, and an orifice attachment / detachment mechanism that detachably attaches the orifice forming member to the opening of the outer cylinder member (see, for example, Patent Document 1 below).

[0004] The orifice attachment / detachment mechanism has a lock operation member that is rotatably attached to the outer cylinder member of the cap body, and a biasing member that biases the lock operation member toward one side in the rotation direction. In the orifice attachment / detachment mechanism, by rotating the lock operation member against the biasing force of the biasing member toward the other side in the rotation direction, the locked state of the orifice forming member with respect to the outer cylinder member of the cap body is released. Thereby, it becomes possible to remove the orifice forming member from the opening of the outer cylinder member.

[0005] Further, the cap unit has a structure in which a water stop packing attached to the lower end portion of the orifice forming member is brought into close contact with an overhanging portion protruding from the inside of the container body over the entire circumference, and the space between the container body and the cap body is sealed (water stopped) through this water stop packing.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] By the way, in the conventional cap unit described above, when the inside of the container body is depressurized, the mouth forming member that is in close contact with the protruding portion of the container body through the water stop packing is sucked to the container body, and the mouth forming member may come off from the opening of the outer cylinder member of the cap body.

[0008] Further, in the conventional cap unit, when the lock operation member is accidentally rotated, the locked state of the mouth forming member with respect to the outer cylinder member of the cap body is unintentionally released, and the mouth forming member may come off from the opening of the outer cylinder member.

[0009] In addition, in the mouth attachment / detachment mechanism that releases the locked state of the mouth forming member with respect to the outer cylinder member of the cap body by rotating the lock operation member, which is a separate member as in the conventional case, it is necessary to be provided at a position where the lock operation member can be easily operated, the degree of freedom of the appearance is low, and it is not always easy to use.

[0010] The present invention has been proposed in view of such conventional circumstances, and in the mouth attachment / detachment mechanism, it is possible to prevent the mouth forming member from unintentionally coming off from the outer cylinder member of the cap body while increasing the degree of freedom of appearance, and by providing such a cap unit, a container with a cap that enables further improvement in usability is provided.

Means for Solving the Problems

[0011] In order to achieve the above object, the present invention provides the following means. 〔1〕 A cap unit detachably attached to a container body having an open upper portion, a cap body that closes the upper opening of the container body, and a lid body rotatably attached to the cap body via a hinge portion. The cap body includes an outer cylinder member provided with an opening at the upper part, a port forming member provided with a liquid passage port that is opened and closed by the rotation of the lid body, and a port attachment / detachment mechanism for detachably attaching the port forming member to the opening of the outer cylinder member. The port attachment / detachment mechanism is characterized in that the port forming member is attached to the opening of the outer cylinder member by sliding the port forming member with respect to the lower surface inside the outer cylinder member. 〔2〕The port attachment / detachment mechanism includes a first locking portion provided on the outer cylinder member and a second locking portion provided on the port forming member. The cap unit according to 〔1〕 above, characterized in that when the port forming member is slid with respect to the lower surface inside the outer cylinder member, the second locking portion is locked to the first locking portion. 〔3〕The port attachment / detachment mechanism includes a lock member that is located on the upper surface of the port forming member and is movably attached downward, and a biasing member that biases the lock member upward. The cap unit according to 〔2〕 above, characterized in that the second locking portion is provided on the lock member. 〔4〕The port attachment / detachment mechanism includes a third locking portion provided on the front side of the port forming member and a fourth locking portion formed by the front side of the opening of the outer cylinder member. The cap unit according to 〔1〕 above, characterized in that when the port forming member is slid with respect to the lower surface inside the outer cylinder member, the third locking portion is locked to the fourth locking portion. 〔5〕The port attachment / detachment mechanism includes a pair of fifth locking portions provided on the left and right sides of the port forming member so as to be recessed inward, and a pair of sixth locking portions provided on the left and right sides of the opening of the outer cylinder member. The cap unit according to 〔1〕 above, characterized in that when the port forming member is slid with respect to the lower surface inside the outer cylinder member, the pair of fifth locking portions are locked to the pair of sixth locking portions. 〔6〕The outer cylinder member has a peripheral wall portion formed in a substantially cylindrical shape. The mouth attachment / detachment mechanism includes a pair of seventh locking portions provided so as to protrude outward from both left and right sides of the mouth forming member, and a pair of eighth locking portions provided on both left and right inner surfaces of the peripheral wall portion of the outer cylinder member. When the mouth forming member is slid with respect to the lower surface inside the outer cylinder member, the pair of seventh locking portions are locked to the pair of eighth locking portions. The cap unit according to the above 〔1〕 is characterized by this. 〔7〕The mouth attachment / detachment mechanism includes a positioning recess provided on either one of the outer cylinder member and the mouth forming member, and a positioning protrusion provided on the other one. When the mouth forming member is slid with respect to the lower surface inside the outer cylinder member, the positioning protrusion is engaged with the positioning recess, whereby the mouth forming member is prevented from rotating with respect to the outer cylinder member. The cap unit according to the above 〔1〕 is characterized by this. 〔8〕A plug portion protruding from the lower surface inside the lid body, and a lid packing that closes the liquid passage port while being detachably attached to the plug portion. The plug portion has a fitting convex portion having a convex shape that is rotationally asymmetric with respect to its central axis. The lid packing has a fitting concave portion having a concave shape corresponding to the fitting convex portion. By fitting the fitting convex portion into the fitting concave portion, the mounting direction of the lid packing with respect to the plug portion is set. The cap unit according to the above 〔1〕 is characterized by this. 〔9〕The cap body has an upper wall portion between the opening portion and the hinge portion. In a state where the lid packing is attached to the plug portion in a direction different from the mounting direction, the lid packing abuts on the upper wall portion before closing the liquid passage port. The cap unit according to the above 〔8〕 is characterized by this. 〔10〕A container with a cap, comprising the cap unit according to any one of 〔1〕 to 〔9〕 above, and a container body to which the cap unit is attached.

Advantages of the Invention

[0012] As described above, according to the present invention, in the mouth attachment / detachment mechanism, a cap unit that can prevent the mouth forming member from unintentionally detaching from the outer cylinder member of the cap body while increasing the degree of freedom of the appearance, and a container with a cap that can further improve the usability by including such a cap unit are provided.

Brief Description of the Drawings

[0013]

Figure 1

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Figure 21

Mode for Carrying Out the Invention

[0014] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. (First Embodiment) First, as a first embodiment of the present invention, for example, a capped container 100 provided with a cap unit 1A shown in FIGS. 1 to 14 will be described.

[0015] Note that FIG. 1 is a perspective view showing the appearance of the capped container 100 provided with the cap unit 1A. FIG. 2 is a cross-sectional view showing the configuration of the capped container 100 provided with the cap unit 1A. FIG. 3 is a perspective view showing a state in which the lid 9 of the cap unit 1A is in the open position. FIG. 4 is a cross-sectional view showing a state before the mouth forming member 11 is attached to the outer cylindrical member 10 of the cap unit 1A. FIG. 5 is a cross-sectional view showing a state after the mouth forming member 11 is attached to the outer cylindrical member 10 of the cap unit 1A. FIG. 6 is a perspective view seen from below of a state before the mouth forming member 11 is attached to the outer cylindrical member 10 of the cap unit 1A. FIG. 7 is a perspective view seen from below of a state after the mouth forming member 11 is attached to the outer cylindrical member 10 of the cap unit 1A. FIG. 8 is a perspective view seen from above of a state in which the mouth forming member 11 and the lid packing 29 are removed from the cap unit 1A. FIG. 9 is a perspective view seen from below of a state in which the mouth forming member 11 is removed from the outer cylindrical member 10 of the cap unit 1A. FIG. 10 is a perspective view seen from above of the mouth forming member 11 provided in the cap unit 1A. FIG. 11 is a cross-sectional view of the mouth forming member 11 taken along the line segment A-A shown in FIG. 10. FIG. 12(A) is a perspective view of the lid packing 29 seen from the front side. FIG. 12(B) is a perspective view of the lid packing 29 seen from the back side. FIG. 13 is a perspective view showing a state in which the attachment direction of the lid packing 29 to the plug portion 9c of the lid 9 is different. FIG. 14 is a cross-sectional view showing a state in which the lid 9 is rotated toward the closed position in the state shown in FIG. 13.

[0016] As shown in FIGS. 1 and 2, the capped container 100 of the present embodiment includes the cap unit 1A of the present embodiment and a container body 2 to which the cap unit 1A is detachably attached.

[0017] The capped container 100 is a beverage container capable of keeping warm or cold a beverage (liquid) accommodated in the container body 2 by the container body 2 having a vacuum insulation structure.

[0018] Specifically, this container body 2 has a bottomed cylindrical outer container 3 and an inner container 4 made of, for example, stainless steel or the like, and is configured by a double - structure container in which the inner container 4 is accommodated inside the outer container 3 and the peripheries of their mouth parts are joined to each other. Further, a vacuum insulation layer 5 is provided between the outer container 3 and the inner container 4. The vacuum insulation layer 5 can be formed, for example, by closing the degassing holes provided on the bottom surface of the outer container 3 in a chamber depressurized (evacuated) to a high vacuum.

[0019] The container body 2 has a substantially circular bottom part 2a, a body part 2b standing up substantially cylindrically from the outer periphery of the bottom part 2a, and a substantially cylindrical mouth - neck part 2c whose diameter is reduced on the upper side of the body part 2b. The upper end part of the mouth - neck part 2c opens in a circular shape as the upper opening part 2d of the container body 2. Further, the inner peripheral surface (on the upper side of the body part 2b) of the mouth - neck part 2c has a smaller diameter than the inner peripheral surface of the body part 2b. Furthermore, a ring - shaped overhanging part 6 protrudes inward over the entire circumference below the inner peripheral surface of the mouth - neck part 2c (below the diameter - reducing part on the upper side of the body part 2b).

[0020] Note that the capped container 100 of the present embodiment has a substantially cylindrical outer shape as a whole, but the outer shape of the capped container 100 is not particularly limited, and appropriate changes can be made according to the size, design, etc. Further, the outer peripheral surface of the container body 2 may be painted, printed, or the like.

[0021] As shown in FIGS. 1 to 3, the cap unit 1A of the present embodiment includes a cap body 7 that closes the upper opening part 2d of the above - described container body 2, and a lid body 9 rotatably attached to the cap body 7 via a first hinge part 8.

[0022] In the following description, the side where the lid body 9 is attached to the cap body 7 via the first hinge portion 8 is defined as the "rear side (back side)" of the cap unit 1A (the container 100 with a cap), the side opposite thereto is defined as the "front side (front surface side)" of the cap unit 1A (the container 100 with a cap), and the direction connecting them is described as the front-rear direction. Also, the side where the lid body 9 is located with respect to the container body 2 is defined as the "upper side", the direction in which the container body 2 is located with respect to the lid body 9 is defined as the "lower side", and the direction connecting them is described as the "vertical direction". Further, the direction orthogonal to the vertical direction is defined as the radial direction, and the direction orthogonal to the front-rear direction among the radial directions is described as the "left-right direction". Unless otherwise specified, hereinafter, the directions in the position where the lid body 9 is closed (closed position) as shown in FIG. 2 are shown.

[0023] As shown in FIGS. 2 to 9, the cap body 7 has, for example, an outer cylinder member 10 and a mouth forming member 11 made of a heat-resistant resin.

[0024] The outer cylinder member 10 has a peripheral wall portion 10a formed in a substantially cylindrical shape so as to be continuous with the body portion 2b of the container body 2, and an upper wall portion 10c in which an opening portion 10b having a diameter smaller than that of the peripheral wall portion 10a is formed at the upper portion of the peripheral wall portion 10a.

[0025] The cap body 7 is detachably attached to the mouth neck portion 2c of the container body 2 by screwing. For this reason, a female screw portion 12 is provided on the inner peripheral surface of the peripheral wall portion 10a (outer cylinder member 10). On the other hand, a male screw portion 13 that is screwed with the female screw portion 12 is provided on the outer peripheral surface of the mouth neck portion 2c.

[0026] As shown in FIGS. 2 to 11, the mouth forming member 11 has an upper mouth forming portion 11a located above the opening portion 10b of the outer cylinder member 10, a lower mouth forming portion 11b located below the opening portion 10b of the outer cylinder member 10, a bottom wall portion 11c located between the upper mouth forming portion 11a and the lower mouth forming portion 11b, and an inner wall portion 11d located on the side facing the lower surface inside the outer cylinder member 10 (the lower surface of the upper wall portion 10c).

[0027] The upper mouth forming portion 11a is provided so as to project obliquely upward in a cut shape from the front side of the mouth forming member 11 as a pouring port or a drinking port. The lower mouth forming portion 11b is provided so as to project substantially in a disc shape in the diameter-expanding direction from the lower end portion of the mouth forming member 11 as a portion fitted into the inside of the container body 2 from the upper opening portion 2d of the container body 2. The bottom wall portion 11c is constituted by a concave portion in which the inside of the upper mouth forming portion 11a is recessed in accordance with the shape of the opening portion 10b. A liquid passage port 14 is provided in a circular shape at the center portion of the bottom wall portion 11c. The inner wall portion 11d is provided so as to project in the diameter-expanding direction from the periphery below the upper mouth forming portion 11a, and has a surface that abuts against the lower surface inside the outer cylinder member 10 (the lower surface of the upper wall portion 10c) at a position closer to the front side. The portion closer to the rear side of the inner wall portion 11d forms a continuous surface while slightly descending compared to the front side.

[0028] When the cap body 7 is attached to the mouth neck portion 2c of the container body 2, it closes the upper opening portion 2d of the container body 2 and is communicated with the inside of the container body 2 through the liquid passage port 14 formed in the mouth forming member 11.

[0029] In the cap body 7, the mouth forming member 11 is detachably attached to the opening portion 10b of the outer cylinder member 10 via a mouth attaching / detaching mechanism 15. As shown in FIGS. 2 to 11, the mouth attaching / detaching mechanism 15 has a structure in which the mouth forming member 11 is attached to the opening portion 10b of the outer cylinder member 10 by sliding it toward the front side (the side opposite to the first hinge portion 8) from the state where the mouth forming member 11 is abutted against the lower surface inside the outer cylinder member 10 (the lower surface of the upper wall portion 10c) of the cap body 7.

[0030] Specifically, this mouth attaching / detaching mechanism 15 includes a first locking portion 16 provided on the lower surface inside the outer cylinder member 10 (the lower surface of the upper wall portion 10c) of the cap body 7, a lock member 17 located on the upper surface of the mouth forming member 11 and movably attached downward, a second locking portion 18 provided on the upper surface of the lock member 17 (mouth forming member 11), and a first biasing member 19 that biases the lock member 17 upward.

[0031] The first locking portion 16 is constituted by a convex portion protruding downward from the lower surface of the upper wall portion 10c located between the opening portion 10b and the first hinge portion 8. As shown in FIGS. 10 and 11, the lock member 17 is located behind the bottom wall portion 11c of the mouth forming member 11 and is disposed inside a hole portion 11e formed in the inner wall portion 11d, and its upper surface constitutes a surface continuous with the upper surface of the portion closer to the rear side of the inner wall portion 11d. The lock member 17 has a pair of left and right elastic pieces 17a protruding downward in parallel with each other, and claw portions 17b protruding outward in the left - right direction from the tips (lower ends) of the pair of elastic pieces 17a.

[0032] On the other hand, the mouth forming member 11 has a cylindrical wall portion 11f forming the hole portion 11e, and the tip (lower end) side of the cylindrical wall portion 11f is curved inward in the left - right direction. The rear side of the cylindrical wall portion 11f connects between the lower mouth forming portion 11b and the inner wall portion 11d. The lock member 17 is inserted inside the hole portion 11e, and by locking the claw portions 17b provided on the pair of elastic pieces 17a to the lower end of the cylindrical wall portion 11f, the lock member 17 is prevented from coming out upward from the hole portion 11e.

[0033] The second locking portion 18 is constituted by a convex portion protruding upward from the upper surface of the lock member 17.

[0034] The first biasing member 19 is made of an elastic member such as rubber or elastomer. The first biasing member 19 is located between the pair of elastic pieces 17a of the lock member 17 and is disposed between this lock member 17 and the lower mouth forming portion 11b of the mouth forming member 11. Regarding the first biasing member 19, instead of the above - mentioned elastic member, a spring member such as a coil spring may be used. Thereby, in the mouth attaching / detaching mechanism 15, due to the elastic force of the first biasing member 19, the lock member 17 is biased upward. Also, while elastically deforming the first biasing member 19, it is possible to move the lock member 17 downward against the biasing force of the first biasing member 19.

[0035] In addition, the mouth attachment / detachment mechanism 15 includes a third locking portion 20 provided on the front side of the mouth forming member 11, a fourth locking portion 21 provided on the front side of the opening 10b of the outer cylinder member 10, a pair of fifth locking portions 22 provided on the left and right sides of the mouth forming member 11 so as to be recessed inward, a pair of sixth locking portions 23 provided on the left and right sides of the opening 10b of the outer cylinder member 10, a pair of seventh locking portions 24 provided so as to protrude outward from the left and right sides of the mouth forming member 11, and a pair of eighth locking portions 25 provided on the left and right sides of the inner surface of the peripheral wall portion 10a of the outer cylinder member 10.

[0036] The third locking portion 20 is constituted by a groove portion formed by cutting out the front side of the upper mouth forming portion 11a inward along the shape of the front side of the opening 10b of the outer cylinder member 10. The lower end side of the third locking portion 20 is provided with a front flange portion 20a protruding forward over approximately half of the front side of the mouth forming member 11, and forms the lower side of the groove portion of the third locking portion 20. The fourth locking portion 21 is generally formed in an arc shape by the front side of the opening 10b of the outer cylinder member 10.

[0037] The pair of fifth locking portions 22 are constituted by a pair of concave portions recessed inward and rearward from the left and right end portions of the third locking portion 20 of the mouth forming member 11. The pair of sixth locking portions 23 are constituted by a pair of inclined portions that incline so as to widen the opening 10b to the left and right while inclining rearward from the left and right end sides of the fourth locking portion 21 of the outer cylinder member 10 so as not to interfere with the shape of the outer peripheral side of the upper mouth forming portion 11a. Regarding the shape of the pair of sixth locking portions 23, as long as it does not interfere with the shape of the outer peripheral side of the upper mouth forming portion 11a, it can be appropriately changed when the upper mouth forming portion 11a of the mouth forming member 11 is fitted into the opening 10b from the lower side inside the opening 10b.

[0038] The pair of seventh locking portions 24 are located behind a pair of notches 24a that notch the left and right sides of the inner wall portion 11d of the mouth forming member 11 corresponding to the pair of eighth locking portions 25, and are constituted by a pair of flange portions provided so as to protrude outward from the left and right sides respectively. The pair of eighth locking portions 25 are constituted by a pair of flange portions provided so as to protrude inward from the left and right sides on the inner surface side of the peripheral wall portion 10a of the outer cylinder member 10.

[0039] In the mouth attachment / detachment mechanism 15, as shown in FIGS. 4 and 6, while fitting the upper mouth forming portion 11a of the mouth forming member 11 from below into the opening 10b of the outer cylinder member 10 (cap body 7), the inner wall portion 11d of the mouth forming member 11 is brought into contact with the lower surface inside the outer cylinder member 10 (the lower surface of the upper wall portion 10c). At this time, the upper mouth forming portion 11a of the mouth forming member 11 is aligned with respect to the pair of sixth locking portions 23, and the pair of eighth locking portions 25 are aligned with respect to the pair of notches 24a so as not to interfere with each other.

[0040] From this state, as shown in FIGS. 5 and 7, the mouth forming member 11 is slid in the direction opposite to the first hinge portion 8 (front side). At this time, the mouth forming member 11 is slid in the direction opposite to the first hinge portion 8 (front side) while aligning the left and right centers of the outer cylinder member 10 and the mouth forming member 11 along the inclined shape of the pair of sixth locking portions 23.

[0041] Also at this time, the third locking portion (groove portion) 20 in the front of the mouth forming member 11 is locked to the fourth locking portion 21 located in the front of the opening 10b of the outer cylinder member 10 (cap body 7). Thereby, the front of the mouth forming member 11 is locked to the outer cylinder member 10 in the front-rear direction and the up-down direction. The mouth forming member 11 can slide until the third locking portion (groove portion) 20 abuts against the fourth locking portion 21.

[0042] In addition, a pair of fifth locking portions 22 on the left and right sides of the mouth forming member 11 are similarly locked to a pair of sixth locking portions 23 located on the left and right sides of the outer cylinder member 10 (cap body 7). Thereby, with respect to the outer cylinder member 10, the portion of the mouth forming member 11 that is slightly forward in the left and right directions is locked in the front-rear direction, left-right direction, and up-down direction.

[0043] In addition, with respect to an eighth locking portion 25 which is a pair of flange portions provided so as to protrude inward from the left and right sides on the inner surface side of the peripheral wall portion 10a of the outer cylinder member 10 (cap body 7), a seventh locking portion 24 which is a pair of flange portions provided so as to protrude outward from the left and right sides of the mouth forming member 11 is similarly locked. Thereby, with respect to the outer cylinder member 10, the portion of the mouth forming member 11 that is slightly rearward in the left and right directions is locked in the left-right direction and up-down direction.

[0044] Furthermore, in the mouth attachment / detachment mechanism 15, when the mouth forming member 11 is slid toward the side opposite to the first hinge portion 8 (front side), while moving the lock member 17 downward against the biasing force of the first biasing member 19, the second locking portion (protrusion) 18 rides over the first locking portion (protrusion) 16, thereby imparting a click feeling. Thereafter, when the lock member 17 returns to its original position by the biasing force of the first biasing member 19, the second locking portion 18 is locked to the first locking portion 16. Thereby, in the cap body 7, it is possible to attach the mouth forming member 11 to the opening 10b of the outer cylinder member 10.

[0045] On the other hand, in the mouth attachment / detachment mechanism 15, as shown in FIGS. 5 and 7, from the state where the mouth forming member 11 is attached to the opening 10b of the outer cylinder member 10 (cap body 7), the mouth forming member 11 is slid toward the first hinge portion 8 side (rear side). At this time, as shown in FIGS. 4 and 6, the second locking portion 18 rides over the first locking portion 16, thereby imparting a click feeling and releasing the locking state of the second locking portion 18 with respect to the first locking portion 16.

[0046] Further, when the locking state of the third locking portion 20 with respect to the fourth locking portion 21, which is located on the front side of the opening portion 10b of the outer cylinder member 10 (cap body 7), is released, the locking state of the pair of fifth locking portions 22 with respect to the pair of sixth locking portions 23 is also released. Further, the locking state of the pair of seventh locking portions 24 with respect to the pair of eighth locking portions 25 is similarly released. As a result, in the cap body 7, it is possible to remove the mouth forming member 11 downward from the opening portion 10b of the outer cylinder member 10.

[0047] Further, as shown in FIGS. 6, 7, 9, and 10, the mouth attachment / detachment mechanism 15 includes a positioning recess 26 provided in either one of the outer cylinder member 10 and the mouth forming member 11 (the mouth forming member 11 in the present embodiment), and a positioning projection 27 provided in the other one (the outer cylinder member 10 in the present embodiment). The positioning recess 26 is formed by a notch in the front central portion of the front flange portion 20a. On the other hand, the positioning projection 27 is formed to project downward from the lower surface of the upper wall portion 10c located on the front side of the opening portion 10b inside the outer cylinder member 10.

[0048] In the mouth attachment / detachment mechanism 15, as shown in FIGS. 5 and 7, when the mouth forming member 11 is slid toward the side opposite to the first hinge portion 8 (front side), the positioning projection 27 is engaged with the positioning recess 26. As a result, the mouth forming member 11 is in a state of being prevented from rotating around its central axis with respect to the outer cylinder member 10. That is, when the cap body 7 (cap unit 1A) is attached to and detached from the mouth neck portion 2c of the container body 2 by screwing, the mouth forming member 11 does not rotate with respect to the outer cylinder member 10.

[0049] Also, in the mouth attachment / detachment mechanism 15, when removing the mouth forming member 11 from the opening 10b of the outer cylinder member 10, it is necessary to perform a sliding operation so as to push the periphery of the upper mouth forming portion 11a or the lower mouth forming portion 11b backward. At this time, in a state where the cap unit 1A (cap body 7) is attached to the container body 2, since the mouth forming member 11 is located inside the container body 2 from the upper opening 2d, it cannot slide and the mouth forming member 11 cannot be removed. For this reason, it will not accidentally come off due to an incorrect operation. Similarly, even if the inside of the container body 2 is depressurized, the mouth forming member 11 will not come off.

[0050] Also, in the mouth attachment / detachment mechanism 15, when removing the mouth forming member 11 from the opening 10b of the outer cylinder member 10, the operation portion is around the upper mouth forming portion 11a or the lower mouth forming portion 11b. For this reason, it is not necessary to provide a separate operation member. Further, for example, the first locking portion 16 and the second locking portion 18 (locking member 17) that give a click feeling upon attachment / detachment are present at positions that are not visible in a state where the mouth forming member 11 is attached to the outer cylinder member 10. In addition, for each of the locking portions from the third locking portion 20 to the eighth locking portion 25, it is not necessary to touch and operate that portion during attachment / detachment, and there is no need to provide them at positions that are easy to see or easy to operate. Therefore, in the cap body 7 of the present embodiment, it is possible to increase the degree of freedom of the appearance.

[0051] As shown in FIGS. 2, 10, and 11, a water stop packing 28 is detachably attached to the lower mouth forming portion 11b of the mouth forming member 11. The water stop packing 28 is a ring-shaped seal member for sealing between the overhanging portion 6 (container body 2) and the mouth forming member 11 (cap body 7), and is made of an elastic member such as a rubber or an elastomer having heat resistance such as silicone rubber.

[0052] The water stop packing 28 is fitted onto the outer periphery of the lower flange portion 11g provided on the outer periphery of the lower end side of the lower side port forming portion 11b (port forming member 11). When the lower side port forming portion 11b (port forming member 11) is fitted inside the container body 2, the water stop packing 28 is in a state of being in close contact with the overhanging portion 6 over the entire circumference while elastically deforming. Thereby, it is possible to seal between the overhanging portion 6 (container body 2) and the port forming member 11 (cap body 7) via the water stop packing 28.

[0053] On the other hand, the water stop packing 28 can be removed from the lower flange portion 11g (port forming member 11) by elastically deforming (stretching) itself. Thereby, the water stop packing 28 and the port forming member 11 can be washed separately, and the space between the water stop packing 28 and the port forming member 11 can be kept hygienic.

[0054] Regarding the water stop packing 28, not only the configuration in which it is detachably attached to the above-described port forming member 11, but also, for example, a configuration in which it is inseparably attached to the port forming member 11 by integral molding or the like may be acceptable.

[0055] Further, on the outer peripheral surface of the water stop packing 28, two elastic flange portions 28a are provided so as to protrude in the diameter-expanding direction. When the cap body 7 (cap unit 1A) is attached to the container body 2, the water stop packing 28 is in a state of being in close contact with the overhanging portion 6 of the container body 2 over the entire circumference while the elastic flange portions 28a elastically deform. Thereby, it is possible to seal (stop water) between the overhanging portion 6 (container body 2) and the port forming member 11 (cap body 7). Regarding the water stop packing 28, it is not necessarily limited to the above-described shape. For example, the number of the elastic flange portions 28a is not limited to the above-described two, and can be one or more.

[0056] On the lower left and right sides of the inner wall portion 11d of the mouth forming member 11, as shown in FIGS. 10 and 11, vertical ribs 11h in the form of wall surfaces extending in the vertical direction are provided so as to connect the inner wall portion 11d and the lower mouth forming portion 11b. The vertical ribs 11h enhance the rigidity of the mouth forming member 11 and mainly suppress deformation in the vertical direction. Due to these vertical ribs 11h, the inner wall portion 11d is prevented from deforming in the vertical direction, and in the mouth attachment / detachment mechanism 15, the click feeling when the second locking portion 18 overrides the first locking portion 16 can be stabilized.

[0057] As shown in FIGS. 2 and 3, the lid body 9 opens and closes the liquid passage port 14 of the mouth forming member 11 and is made of, for example, a heat-resistant resin. The lid body 9 has a peripheral wall portion 9a formed in a substantially cylindrical shape so as to be continuous with the peripheral wall portion 10a of the outer cylindrical member 10 (cap main body 7), a top wall portion 9b covering the top surface of the peripheral wall portion 9a, and a plug portion 9c integrally assembled so as to protrude from the lower surface of the top wall portion 9b. Note that the lid body 9 may be composed of, for example, an arm portion that is hingedly rotatably connected to the first hinge portion 8, and a cap portion that is horizontally rotatably attached to the side opposite to the side connected to the first hinge portion 8 of the arm portion, or may be composed of a plurality of other components. Further, the plug portion 9c may be integrally assembled with a member formed as a separate member from the lid body 9 as in this embodiment, or may be integrally formed with the lid body 9.

[0058] As shown in FIGS. 2 to 5 and FIG. 12, a lid packing 29 is detachably attached to the plug portion 9c of the lid body 9. As shown in FIGS. 12(A) and (B), the lid packing 29 is a seal member for closing the liquid passage port 14 of the mouth forming member 11. The lid packing 29 is made of an elastic member, and for example, a material same as that of the water stop packing 28 can be used.

[0059] The lid packing 29 has a first seal convex portion 29a protruding from the front side (the lower side in FIGS. 12(A) and 12(B)), a second seal convex portion 29b protruding from the front side and outside the periphery of the first seal convex portion 29a, a first fitting concave portion 29c recessed on the back side (the upper side in FIGS. 12(A) and 12(B)) corresponding to the shape of the first seal convex portion 29a, a second fitting concave portion 29d recessed on the back side corresponding to the shape of the second seal convex portion 29b, a first locking convex portion 29e protruding inward from around the first fitting concave portion 29c, and a notch portion 29f that notches a part of the periphery of the second seal convex portion 29b and the second fitting concave portion 29d.

[0060] In the present embodiment, the first seal convex portion 29a has a shape protruding in a circular dome shape. The second seal convex portion 29b has a shape in which rounded substantially triangular corner portions protrude from both the left and right sides on the first hinge portion 8 side (the rear side) of the first seal convex portion 29a. The notch portion 29f is notched and formed at the center of the first hinge portion 8 side (the rear side) of the second seal convex portion 29b and the second fitting concave portion 29d.

[0061] On the other hand, as shown in FIGS. 4, 5, and 8, the plug portion 9c has a first fitting convex portion 30a protruding in a shape corresponding to the first fitting concave portion 29c, second fitting convex portions 30b protruding from both the left and right sides in a shape corresponding to the second fitting concave portion 29d, and a first locking concave portion 30c recessed in the radial direction around the first fitting convex portion 30a in a shape corresponding to the first locking convex portion 29e. Further, the plug portion 9c has a protruding portion 30d protruding in a shape corresponding to the notch portion 29f toward the outside (the rear side) than the periphery on the first hinge portion 8 side (the rear side) between the two second fitting convex portions 30b protruding from both the left and right sides. Further, the plug portion 9c has a stepped portion 30e provided stepwise upward (downward in FIGS. 4, 5, and 8) continuously from the protruding portion 30d with the same width as the protruding portion 30d toward the outside (the rear side).

[0062] As shown in FIGS. 2 to 5, the lid packing 29 has the first fitting convex portion 30a fitted into the first fitting concave portion 29c, the first locking convex portion 29e locked to the first locking concave portion 30c, and the second fitting convex portion 30b fitted into the second fitting concave portion 29d. At this time, the protruding portion 30d of the plug portion 9c is locked to the notch portion 29f, and the protruding portion 30d protrudes toward the outside (rear side) of the lid packing 29. Thereby, it is possible to attach the lid packing 29 to the plug portion 9c of the lid body 9. That is, the lid packing 29 is fitted to the plug portion 9c.

[0063] At the closing position of the lid body 9 as shown in FIG. 2, when the lid packing 29 closes the liquid passage port 14 of the port forming member 11, the first seal convex portion 29a is elastically deformed and is in close contact with the periphery of the liquid passage port 14 of the port forming member 11 over the entire circumference. Thereby, it is possible to close (seal) the liquid passage port 14 of the port forming member 11 through the lid packing 29.

[0064] On the other hand, the lid packing 29 can be removed from the plug portion 9c (lid body 9) itself. Thereby, the lid packing 29 and the lid body 9 can be washed separately, and the space between the lid packing 29 and the lid body 9 can be kept hygienic.

[0065] By the way, in the cap unit 1A of the present embodiment, the above-described plug portion 9c has a convex shape that is bilaterally symmetric with respect to the central axis connecting the front and rear directions and rotationally asymmetric with respect to the central axis connecting the up and down directions, so that the mounting direction of the lid packing 29 with respect to the plug portion 9c (lid body 9) is set. That is, if only the first fitting convex portion 30a is fitted into the first fitting concave portion 29c and the first locking convex portion 29e is locked to the first locking concave portion 30c, the lid packing 29 is rotatable with respect to the plug portion 9c. On the other hand, in accordance with this, the second fitting convex portion 30b is fitted into the second fitting concave portion 29d, and the protruding portion 30d is locked to the notch portion 29f, whereby the mounting direction of the lid packing 29 with respect to the plug portion 9c is set to only one direction.

[0066] In the cap unit 1A of the present embodiment, as shown in FIGS. 13 and 14, when the lid packing 29 is attached to the plug portion 9c in a direction different from the correct attachment direction shown in FIG. 3 described above, before the lid packing 29 closes the liquid passage port 14, the height of the step portion 30e is set so that the lid packing 29 abuts against the portion between the opening 10b of the upper wall portion 10c and the first hinge portion 8.

[0067] That is, when the attachment direction of the lid packing 29 is different from the correct direction, before the lid packing 29 closes the liquid passage port 14, the lid packing 29 abuts between the portion between the opening 10b of the upper wall portion 10c and the first hinge portion 8 and the step portion 30e so as to be sandwiched therebetween, thereby preventing the lid body 9 from being rotated to the closed position. As a result, it is possible to easily let the user recognize that the attachment direction of the lid packing 29 is incorrect.

[0068] Further, in the cap unit 1A of the present embodiment, as shown in FIGS. 3 and 12(A) and (B), since the second seal convex portion 29b described above protrudes outside the periphery of the first seal convex portion 29a, by pinching the portion where the second seal convex portion 29b is provided, it is possible to easily remove the lid packing 29 from the plug portion 9c.

[0069] A second biasing member (not shown) that biases the lid body 9 in the direction of opening (open direction) the liquid passage port 14 of the port forming member 11 is provided between the cap body 7 and the lid body 9. The second biasing member is composed of a spring member such as a torsion spring, for example, and is attached inside the first hinge portion 8. Note that the second biasing member is not limited to being composed of the spring member described above, and for example, a ring-shaped elastic member made of rubber or an elastomer may be hooked between the lid body 9 and the cap body 7 to bias the lid body 9 in the open direction.

[0070] The cap unit 1A of the present embodiment includes a lid lock mechanism 31 that fixes the lid body 9 to the cap body 7 at a position (closed position) where the lid body 9 closes the upper part of the cap body 7. The lid lock mechanism 31 has a lock button member 33 rotatably attached to the cap body 7 via a second hinge portion 32, and a ring stopper 34 rotatably attached to the cap body 7 via the second hinge portion 32.

[0071] The lock button member 33 is rotatably supported by a second hinge portion 32 provided on the front side of the outer cylindrical member 10 (peripheral wall portion 10a). The lock button member 33 has a first arm portion 33a extending upward from the second hinge portion 32 and a second arm portion 33b extending downward from the second hinge portion 32. A hook portion 35 is provided protruding rearward at the tip of the first arm portion 33a (the upper end of the lock button member 33). A third biasing member 36 made of an elastic member such as a coil spring is disposed between the second arm portion 33b and the peripheral wall portion 10a. Note that for the third biasing member 36, a spring member such as rubber or elastomer may be used instead of the above-described elastic member.

[0072] The ring stopper 34 is formed of a ring-shaped member with a part open, and both ends thereof are rotatably supported outside the second hinge portion 32. Thereby, the ring stopper 34 can rotate in the vertical direction.

[0073] On the other hand, the lid lock mechanism 31 has a lock receiving portion 37 where the hook portion 35 of the lock button member 33 is engaged, and a stopper receiving portion 38 where the ring stopper 34 is hooked. The lock receiving portion 37 is formed of a claw portion protruding forward from the lower end portion on the front side of the lid body 9 (peripheral wall portion 9a). The stopper receiving portion 38 has a shape corresponding to the inside of the ring stopper 34 and is formed of a wall portion protruding forward from a position surrounding the lock receiving portion (claw portion) 37 of the peripheral wall portion 9a.

[0074] In the lid locking mechanism 31, when the lid 9 closes the upper part of the cap body 7, the hook part 35 of the lock button member 33 is locked to the lock receiving part 37, thereby maintaining the state where the lid 9 closes the upper part of the cap body 7. From this state, by pressing the second arm part 33b side of the lock button member 33 against the biasing force of the third biasing member 36, the locking state of the hook part 35 with respect to the lock receiving part 37 is released. Thereby, it is possible to rotate the lid 9 biased by the second biasing member in the opening direction.

[0075] On the other hand, in the lid locking mechanism 31, when the lid 9 closes the upper part of the cap body 7, the ring stopper 34 is hooked on the stopper receiving part 38, thereby preventing the lid 9 from rotating in the opening direction. Thereby, in the lid locking mechanism 31, it is possible to prevent the lid 9 from opening due to an unnecessary operation of the lock button member 33.

[0076] In the cap unit 1A of the present embodiment having the above-described configuration, in the cap body 7, from the state where the mouth forming member 11 is brought into contact with the lower surface inside the outer cylinder member 10 (the lower surface of the upper wall portion 10c) by the above-described mouth attaching / detaching mechanism 15, the mouth forming member 11 is attached to the opening 10b of the outer cylinder member 10 by sliding toward the side opposite to the first hinge portion 8 (front side). Thereby, in the cap unit 1A of the present embodiment, when the inside of the container body 2 is depressurized, the mouth forming member 11 in close contact with the overhanging portion 6 of the container body 2 via the water stop packing 28 is sucked to the container body 2, and it is possible to prevent the mouth forming member 11 from coming off from the opening 10b of the outer cylinder member 10.

[0077] Also, in the cap unit 1A of the present embodiment, it is possible to prevent the locking state of the mouth forming member 11 with respect to the outer cylinder member 10 from being unintentionally released and the mouth forming member 11 from coming off from the opening 10b of the outer cylinder member 10.

[0078] In the cap unit 1A of the present embodiment, in the cap body 7 described above, the locking member 17 is located on the side facing the lower surface inside the outer cylindrical member 10 (the lower surface of the upper wall portion 10c). In this case, the locking member 17 is not exposed above the upper surface of the cap body 7 (the upper surface of the upper wall portion 10c), and it is possible to increase the degree of freedom in appearance including the upper surface of the cap body 7 (the upper surface of the upper wall portion 10c).

[0079] For example, in the cap unit 1A of the present embodiment, the upper surface of the upper wall portion 10c forms a flat surface, and when drinking the beverage in the container body 2 that flows out from the liquid outlet 14 by tilting the container body 2, the cap body 7 (outer cylindrical member 10) does not hit the nose of the drinker, and it is possible to improve the usability of the drinker.

[0080] Also, in the cap unit 1A of the present embodiment, when the mounting direction of the lid packing 29 described above is incorrect, before the lid packing 29 closes the liquid outlet 14, the lid packing 29 abuts against the upper surface of the upper wall portion 10c, so that the user can easily recognize that the mounting direction of the lid packing 29 is incorrect.

[0081] As described above, in the cap unit 1A of the present embodiment, by providing the above-described mouth attachment / detachment mechanism 15, it is possible to increase the mounting strength of the mouth forming member 11 to the outer cylindrical member 10 of the cap body 7 while increasing the degree of freedom in appearance. Therefore, in the capped container 100 provided with such a cap unit 1A, it is possible to further improve the usability.

[0082] (Second Embodiment) Next, as a second embodiment of the present invention, the cap unit 1B shown in FIGS. 15 to 19 will be described, for example.

[0083] Note that FIG. 15 is a cross-sectional view showing the state before the mouth forming member 11 is attached to the outer cylinder member 10 of the cap unit 1B. FIG. 16 is a cross-sectional view showing the state after the mouth forming member 11 is attached to the outer cylinder member 10 of the cap unit 1B. FIG. 17 is a plan view seen from below of the state where the mouth forming member 11 is removed from the outer cylinder member 10 of the cap unit 1B. FIG. 18 is a perspective view seen from above of the mouth forming member 11 provided in the cap unit 1B. FIG. 19 is a cross-sectional perspective view of the cap unit 1B along the line segment B-B shown in FIG. 16. In the following description, for parts equivalent to the above cap unit 1A, the description will be omitted and the same reference numerals will be given in the drawings.

[0084] The cap unit 1B of the present embodiment has basically the same configuration as the above cap unit 1A, except that the configuration of the mouth attachment / detachment mechanism 15 among the configurations of the above cap unit 1A is changed.

[0085] Specifically, as shown in FIGS. 15 to 19, the mouth attachment / detachment mechanism 15 of the present embodiment has a locking piece 39 provided with a second locking portion 18 instead of the above-described locking member 17 and first biasing member 19. Among the mouth forming member 11, the cylindrical wall portion 11f forming the hole portion 11e and the vertical rib 11h are omitted.

[0086] The locking piece 39 is a plate-shaped elastic piece protruding rearward from the central portion behind the bottom wall portion 11c of the mouth forming member 11, and is provided so as to be elastically deformable downward. The second locking portion 18 is constituted by a convex portion protruding upward from the rear end of the locking piece 39.

[0087] Further, the mouth attachment / detachment mechanism 15 of the present embodiment has a positioning recess 40 provided in either one of the outer cylinder member 10 and the mouth forming member 11 (the mouth forming member 11 in the present embodiment) and a positioning projection 41 provided in the other (the outer cylinder member 10 in the present embodiment) instead of the above-described positioning recess 26 and positioning projection 27.

[0088] The positioning recess 40 is constituted by a pair of slits that notch the left and right sides sandwiching the locking piece 39 of the inner wall portion 11d. The positioning protrusion 41 is constituted by a pair of protrusions that project downward from both the left and right sides of the first locking portion 16 on the lower surface of the upper wall portion 10c.

[0089] In the mouth attachment / detachment mechanism 15 of the present embodiment, when attaching or detaching the mouth forming member 11 to / from the opening 10b of the outer cylinder member 10 (cap body 7), the same attachment / detachment operation as that of the mouth attachment / detachment mechanism 15 of the cap unit 1A may be performed. That is, while fitting the upper mouth forming portion 11a of the mouth forming member 11 from the lower side inside the opening 10b of the outer cylinder member 10 (cap body 7), the inner wall portion 11d of the mouth forming member 11 is brought into contact with the lower surface inside the outer cylinder member 10 (the lower surface of the upper wall portion 10c). At this time, the pair of eighth locking portions 25 are aligned with the pair of notches 24a.

[0090] From this state, the mouth forming member 11 is slid in the direction opposite to the first hinge portion 8 (front side). At this time, the mouth forming member 11 can slide until the front flange portion 20a abuts against the inside of the peripheral wall portion 10a of the outer cylinder member 10.

[0091] Also, at that time, the third locking portion (groove portion) 20 is locked to the fourth locking portion 21, the pair of fifth locking portions 22 are locked to the pair of sixth locking portions 23, and the pair of seventh locking portions 24 are locked to the pair of eighth locking portions 25, in the same manner as the cap unit 1A. As a result, the front of the mouth forming member 11 is locked to the outer cylinder member 10 in the front-rear direction, up-down direction, and left-right direction.

[0092] Furthermore, in the mouth attachment / detachment mechanism 15 of the present embodiment, as shown in FIGS. 15 and 16, when the mouth forming member 11 is slid toward the side opposite to the first hinge portion 8 (front side), while elastically deforming the lock piece 39 downward, the second locking portion (protrusion) 18 overrides the first locking portion (protrusion) 16 to impart a click feeling. Thereafter, when the lock piece 39 elastically returns to its original position, the second locking portion 18 is locked to the first locking portion 16. As a result, in the cap body 7, it is possible to attach the mouth forming member 11 to the opening 10b of the outer cylinder member 10.

[0093] Also, in the mouth attachment / detachment mechanism 15 of the present embodiment, while fitting the upper mouth forming portion 11a of the mouth forming member 11 from below into the inside of the opening 10b of the outer cylinder member 10 (cap body 7), by bringing the inner wall portion 11d of the mouth forming member 11 into contact with the lower surface inside the outer cylinder member 10 (the lower surface of the upper wall portion 10c), the positioning convex portions (pair of convex portions) 41 are engaged with the positioning concave portions (pair of slits) 40. Further, from this state, when the mouth forming member 11 is slid toward the side opposite to the first hinge portion 8 (front side), it is fixed in a state where the positioning convex portions (pair of convex portions) 41 are engaged with the positioning concave portions (pair of slits) 40. As a result, the mouth forming member 11 is in a state of being prevented from rotating around its central axis with respect to the outer cylinder member 10. That is, when the cap body 7 (cap unit 1B) is attached to and detached from the mouth neck portion 2c of the container body 2 by screwing, the mouth forming member 11 does not rotate with respect to the outer cylinder member 10.

[0094] Note that, in the present embodiment, since the positioning convex portions 41 are engaged with the positioning concave portions 40, the mouth forming member 11 is in a state of being prevented from rotating with respect to the outer cylinder member 10. Therefore, unlike the cap unit 1A, it does not include the positioning concave portion 26 and the positioning convex portion 27.

[0095] On the other hand, in the mouth attachment / detachment mechanism 15, as shown in FIG. 16, starting from the state where the mouth forming member 11 is attached to the opening 10b of the outer cylindrical member 10 (cap body 7), the mouth forming member 11 is slid toward the first hinge portion 8 side (rear side). At this time, as shown in FIG. 15, when the second locking portion 18 gets over the first locking portion 16, a click feeling is imparted and the locking state of the second locking portion 18 with respect to the first locking portion 16 is released.

[0096] Furthermore, the locking state of the third locking portion 20 with respect to the fourth locking portion 21, the locking state of the pair of fifth locking portions 22 with respect to the pair of sixth locking portions 23, and the locking state of the pair of seventh locking portions 24 with respect to the pair of eighth locking portions 25 are similarly released respectively. As a result, in the cap body 7, it is possible to remove the mouth forming member 11 downward from the opening 10b of the outer cylindrical member 10.

[0097] In the cap unit 1B of the present embodiment having the above-described configuration, in the cap body 7, from the state where the mouth forming member 11 is brought into contact with the lower surface inside the outer cylindrical member 10 (the lower surface of the upper wall portion 10c) by the above-described mouth attachment / detachment mechanism 15, by sliding toward the side opposite to the first hinge portion 8 (front side), the mouth forming member 11 is attached to the opening 10b of the outer cylindrical member 10. As a result, in the cap unit 1B of the present embodiment, when the inside of the container body 2 is depressurized, the mouth forming member 11 in close contact with the overhanging portion 6 of the container body 2 via the water stop packing 28 is sucked to the container body 2, and it is possible to prevent the mouth forming member 11 from coming off from the opening 10b of the outer cylindrical member 10.

[0098] Also, in the cap unit 1B of the present embodiment, it is possible to prevent the locking state of the mouth forming member 11 with respect to the outer cylindrical member 10 from being unintentionally released and the mouth forming member 11 from coming off from the opening 10b of the outer cylindrical member 10.

[0099] In addition, in the cap unit 1B of the present embodiment, in the cap body 7 described above, the lock piece 39 is located on the side facing the lower surface inside the outer cylinder member 10 (the lower surface of the upper wall portion 10c). In this case, the lock piece 39 is not exposed above the upper surface of the cap body 7 (the upper surface of the upper wall portion 10c), and it is possible to increase the degree of freedom in appearance including the upper surface of the cap body 7 (the upper surface of the upper wall portion 10c).

[0100] In addition, in the mouth attachment / detachment mechanism 15 of the present embodiment, by configuring the above-described lock piece 39 integrally with the mouth forming member 11, it is possible to reduce the number of parts.

[0101] As described above, in the cap unit 1B of the present embodiment, by providing the above-described mouth attachment / detachment mechanism 15, it is possible to increase the attachment strength of the mouth forming member 11 to the outer cylinder member 10 of the cap body 7 while increasing the degree of freedom in appearance. Therefore, in the capped container 100 provided with such a cap unit 1B, it is possible to further improve the usability.

[0102] (Third Embodiment) Next, as a third embodiment of the present invention, the cap unit 1C shown in FIGS. 20 and 21, for example, will be described.

[0103] Note that FIG. 20 is a plan view of the state where the mouth forming member 11 is removed from the outer cylinder member 10 of the cap unit 1C as viewed from below. FIG. 21 is a perspective view of the mouth forming member 11 provided in the cap unit 1C as viewed from above. In the following description, the description of parts equivalent to those of the cap unit 1A will be omitted, and the same reference numerals will be given in the drawings.

[0104] The cap unit 1C of the present embodiment has basically the same configuration as the cap unit 1A except that the configuration of the mouth attachment / detachment mechanism 15 in the configuration of the cap unit 1A is changed.

[0105] Specifically, as shown in FIGS. 20 and 21, the mouth attachment / detachment mechanism 15 of the present embodiment has a pair of lock pieces 42 provided with a second locking portion 18 instead of the above-described lock member 17 and first biasing member 19. Note that, among the mouth forming members 11, the cylindrical wall portion 11f forming the hole portion 11e and the vertical rib 11h are omitted.

[0106] The pair of lock pieces 42 are thin plate-like elastic pieces protruding rearward from both sides sandwiching the inner wall portion 11d on the rear side of the bottom wall portion 11c of the mouth forming member 11, and are each provided so as to be elastically deformable inward. The second locking portion 18 is constituted by convex portions protruding outward in the left-right direction from the tips of the pair of lock pieces 42.

[0107] On the other hand, the first locking portion 16 is located on the rear side of the upper wall portion 10c and protrudes downward from the lower surfaces on both the left and right sides, and is constituted by a pair of convex portions protruding inward from the outer sides in the left-right direction.

[0108] In the mouth attachment / detachment mechanism 15 of the present embodiment, when attaching or detaching the mouth forming member 11 to or from the opening 10b of the outer cylinder member 10 (cap body 7), the same attachment / detachment operation as that of the mouth attachment / detachment mechanism 15 of the cap unit 1A may be performed. That is, while fitting the upper mouth forming portion 11a of the mouth forming member 11 from below into the inside of the opening 10b of the outer cylinder member 10 (cap body 7), the inner wall portion 11d of the mouth forming member 11 is brought into contact with the lower surface inside the outer cylinder member 10 (the lower surface of the upper wall portion 10c). At this time, the pair of eighth locking portions 25 are aligned with the pair of notches 24a.

[0109] From this state, the mouth forming member 11 is slid in the direction opposite to the first hinge portion 8 (front side). At this time, the mouth forming member 11 can slide until the front flange portion 20a abuts against the inside of the peripheral wall portion 10a of the outer cylinder member 10.

[0110] Also, at this time, the third locking portion (groove portion) 20 is locked to the fourth locking portion 21, the pair of fifth locking portions 22 are locked to the pair of sixth locking portions 23, and the pair of seventh locking portions 24 are locked to the pair of eighth locking portions 25, in the same manner as the cap unit 1A. As a result, the front of the mouth forming member 11 is locked to the outer cylinder member 10 in the front-rear direction, the vertical direction, and the left-right direction.

[0111] Also, when attaching the mouth forming member 11 to the opening 10b of the outer cylinder member 10, in the same manner as the cap unit 1A, the positioning convex portion 27 is engaged with the positioning concave portion 26. As a result, the mouth forming member 11 is in a state of being prevented from rotating around its central axis with respect to the outer cylinder member 10. That is, when the cap body 7 (cap unit 1C) is detachably screwed to the mouth neck portion 2c of the container body 2, etc., the mouth forming member 11 does not rotate with respect to the outer cylinder member 10.

[0112] Furthermore, in the mouth attachment / detachment mechanism 15, when the mouth forming member 11 is slid toward the side opposite to the first hinge portion 8 (front side), while elastically deforming the pair of lock pieces 42 inward, the second locking portion (projection) 18 gets over the first locking portion (projection) 16 respectively, thereby imparting a click feeling. Thereafter, when the pair of lock pieces 42 elastically return to their original positions, the second locking portion 18 is locked to the first locking portion 16. As a result, in the cap body 7, it is possible to attach the mouth forming member 11 to the opening 10b of the outer cylinder member 10.

[0113] On the other hand, in the mouth attachment / detachment mechanism 15, from the state where the mouth forming member 11 is attached to the opening 10b of the outer cylinder member 10 (cap body 7), the mouth forming member 11 is slid toward the first hinge portion 8 side (rear side). At this time, the second locking portion 18 gets over the first locking portion 16 respectively, thereby imparting a click feeling and releasing the locking state of the second locking portion 18 with respect to the first locking portion 16.

[0114] Furthermore, the locking state of the third locking portion 20 with respect to the fourth locking portion 21, the locking state of the pair of fifth locking portions 22 with respect to the pair of sixth locking portions 23, and the locking state of the pair of seventh locking portions 24 with respect to the pair of eighth locking portions 25 are similarly released. Also, the engagement between the positioning recess 26 and the positioning projection 27 is released. As a result, in the cap body 7, it is possible to remove the mouth forming member 11 downward from the opening 10b of the outer cylinder member 10.

[0115] In the cap unit 1C of the present embodiment having the above-described configuration, in the cap body 7, by the mouth attachment / detachment mechanism 15 described above, from the state where the mouth forming member 11 is brought into contact with the lower surface inside the outer cylinder member 10 (the lower surface of the upper wall portion 10c), by sliding toward the side opposite to the first hinge portion 8 (front side), the mouth forming member 11 is attached to the opening 10b of the outer cylinder member 10. As a result, in the cap unit 1C of the present embodiment, when the inside of the container body 2 is depressurized, the mouth forming member 11 that is in close contact with the overhanging portion 6 of the container body 2 via the water stop packing 28 is attracted to the container body 2, and it is possible to prevent the mouth forming member 11 from coming off from the opening 10b of the outer cylinder member 10.

[0116] Also, in the cap unit 1C of the present embodiment, in the cap body 7, it is possible to prevent the locking state of the mouth forming member 11 with respect to the outer cylinder member 10 from being unintentionally released and the mouth forming member 11 from coming off from the opening 10b of the outer cylinder member 10.

[0117] Also, in the cap unit 1C of the present embodiment, in the cap body 7 described above, a pair of locking pieces 42 are located on the side facing the lower surface inside the outer cylinder member 10 (the lower surface of the upper wall portion 10c). In this case, the pair of locking pieces 42 do not protrude above the upper surface of the cap body 7 (the upper surface of the upper wall portion 10c), and it is possible to increase the degree of freedom of the appearance including the upper surface of this cap body 7 (the upper surface of the upper wall portion 10c).

[0118] In addition, in the mouth attachment / detachment mechanism 15 of the present embodiment, by configuring the pair of lock pieces 42 described above integrally with the mouth forming member 11, it is possible to reduce the number of parts.

[0119] As described above, in the cap unit 1C of the present embodiment, by providing the mouth attachment / detachment mechanism 15 described above, it is possible to increase the attachment strength of the mouth forming member 11 to the outer cylindrical member 10 of the cap body 7 while increasing the degree of freedom of the appearance. Therefore, in the capped container 100 provided with such a cap unit 1C, it is possible to further improve the usability.

[0120] Note that the present invention is not necessarily limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the case where the present invention is applied to a beverage container having a heat-insulating and cold-insulating function by the container body 2 having the vacuum heat-insulating structure described above is exemplified. However, the present invention can be widely applied to a capped container including a container body and a cap unit detachably attached to the container body.

Explanation of Reference Numerals

[0121] 1A, 1B, 1C... cap units; 2... container body; 7... cap body; 8... first hinge portion; 9... lid body; 10... outer cylindrical member; 11... mouth forming member; 14... liquid passage port; 15... mouth attachment / detachment mechanism; 16... first locking portion; 17... lock member; 18... second locking portion; 19... first biasing member; 20... third locking portion; 21... fourth locking portion; 22... fifth locking portion; 23... sixth locking portion; 24... seventh locking portion; 25... eighth locking portion; 26... positioning recess; 27... positioning projection; 28... water stop packing; 29... lid packing; 31... lid lock mechanism; 100... capped container

Claims

1. A cap unit detachably attached to a container body with an open top, comprising: a cap body for closing the upper opening of the container body; a lid rotatably attached to the cap body via a hinge portion, wherein the cap body includes an outer cylindrical member provided with an opening at the top, an orifice forming member provided with a liquid passage opening opened and closed by the rotation of the lid, and an orifice attachment / detachment mechanism for detachably attaching the orifice forming member to the opening of the outer cylindrical member, wherein the orifice attachment / detachment mechanism has a structure in which the orifice forming member is attached to the opening of the outer cylindrical member by sliding the orifice forming member with respect to the lower inner surface of the outer cylindrical member, and is characterized by the cap unit.

2. The orifice attachment / detachment mechanism has a first locking portion provided on the outer cylindrical member and a second locking portion provided on the orifice forming member, and is characterized in that when the orifice forming member is slid with respect to the lower inner surface of the outer cylindrical member, the second locking portion is locked to the first locking portion, as claimed in claim 1.

3. The orifice attachment / detachment mechanism includes a lock member located on the upper surface of the orifice forming member and movably attached downward, and a biasing member for biasing the lock member upward, and is characterized in that the second locking portion is provided on the lock member, as claimed in claim 2.

4. The orifice attachment / detachment mechanism has a third locking portion provided on the front side of the orifice forming member and a fourth locking portion formed by the front side of the opening of the outer cylindrical member, and is characterized in that when the orifice forming member is slid with respect to the lower inner surface of the outer cylindrical member, the third locking portion is locked to the fourth locking portion, as claimed in claim 1.

5. The orifice attachment / detachment mechanism has a pair of fifth locking portions provided on the left and right sides of the orifice forming member so as to be recessed inward, and a pair of sixth locking portions provided on the left and right sides of the opening of the outer cylindrical member, and is characterized in that when the orifice forming member is slid with respect to the lower inner surface of the outer cylindrical member, the pair of fifth locking portions are locked to the pair of sixth locking portions, as claimed in claim 1.

6. The outer cylindrical member has a peripheral wall portion formed in a substantially cylindrical shape, The mouth attachment / detachment mechanism has a pair of seventh locking portions provided so as to protrude outward from both left and right sides of the mouth forming member, and a pair of eighth locking portions provided on both left and right sides of the inner surface of the peripheral wall portion of the outer cylinder member. The cap unit according to claim 1, wherein when the mouth forming member is slid with respect to the lower surface inside the outer cylinder member, the pair of seventh locking portions are locked to the pair of eighth locking portions.

7. The mouth attachment / detachment mechanism has a positioning recess provided on either one of the outer cylinder member and the mouth forming member, and a positioning protrusion provided on the other one. The cap unit according to claim 1, wherein when the mouth forming member is slid with respect to the lower surface inside the outer cylinder member, the positioning protrusion is engaged with the positioning recess, thereby preventing the mouth forming member from rotating with respect to the outer cylinder member.

8. A plug portion protruding from the lower surface inside the lid body, and a lid packing for closing the liquid passage port, which is detachably attached to the plug portion. The plug portion has a fitting convex portion having a convex shape that is rotationally asymmetric with respect to its central axis. The lid packing has a fitting concave portion having a concave shape corresponding to the fitting convex portion. The cap unit according to claim 1, wherein the mounting direction of the lid packing with respect to the plug portion is set by fitting the fitting convex portion into the fitting concave portion.

9. The cap body has an upper wall portion between the opening portion and the hinge portion. The cap unit according to claim 8, wherein in a state where the lid packing is attached to the plug portion in a direction different from the mounting direction, the lid packing abuts against the upper wall portion before closing the liquid passage port.

10. A capped container comprising the cap unit according to any one of claims 1 to 9, and a container body to which the cap unit is attached.

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