Lid unit and container with lid

Abstract

The invention provides a cover unit which can prevent an inner plug from falling off from the lower surface of the inner side of an outer cover even if the inner plug is peeled off from the lower surface of the inner side of the outer cover. A lid unit (1A) is detachably attached to a container main body (2) having an upper opening, and is provided with a lid main body (9) for closing an upper opening (2a) of the container main body (2). The cover main body (9) is provided with an outer cover (10) covering an upper opening (2a) of the container main body (2), an inner plug (11) embedded into the inner side of the container main body (2) from the upper opening (2a), and a temporary fixing mechanism (20A) for temporarily fixing the inner plug (11) relative to the lower surface of the inner side of the outer cover (10), and the inner plug (11) is temporarily fixed by the temporary fixing mechanism (20A) so as to be prevented from falling off from the outer cover (10). The inner plug (11) is integrally joined to the lower surface of the inner side of the outer cap (10).

Description

Technical Field

[0001] This invention relates to lid units and lidded containers. Background Technology

[0002] Conventionally, there have been containers with lids that have a lid unit (plug) that can be detachably installed on the container body with an upper opening to open and close the upper opening of the container body (see, for example, Patent Documents 1 and 2 below).

[0003] Such a cover unit has an outer cover that covers the upper opening of the container body, and an inner plug that is inserted into the inside of the container body from the upper opening, and is installed on the container body by threading the inner plug or the outer cover.

[0004] Patent Document 1: Japanese Patent No. 5929510

[0005] Patent Document 2: Japanese Patent Application Publication No. 2002-37351

[0006] However, in the existing cover unit mentioned above, the inner plug is joined to the lower inner surface of the outer cover by ultrasonic welding, high-frequency welding, etc., to form an integrally installed structure.

[0007] However, in such a structure, for example, when there is a poor fit, stress is applied to the mating surface between the inner lower surface of the outer cover and the inner plug during the loading and unloading of the repetitive cover unit relative to the container body, thus the possibility of the inner plug peeling off from the inner lower surface of the outer cover needs to be considered.

[0008] In addition, if the inner plug peels off from the lower inner surface of the outer cover, it will fall off from the lower inner surface of the outer cover. Therefore, countermeasures are needed to provide a product that can be used more safely. Summary of the Invention

[0009] The present invention was made in view of the existing situation, and aims to provide a cap unit that can prevent the inner plug from falling off the lower inner surface of the outer cap even if the inner plug is peeled off from the lower inner surface of the outer cap, and a capped container that can be made safer and more convenient to use by having such a cap unit.

[0010] To achieve the above objectives, the present invention provides the following mechanism.

[0011] [1] A cover unit, detachably mounted on a container body with an upper opening, characterized in that,

[0012] The aforementioned cover unit includes a cover body that closes the upper opening of the aforementioned container body.

[0013] The above-mentioned cover body has:

[0014] An outer cover that covers the upper opening of the container body;

[0015] An inner plug is inserted into the inside of the container body from the aforementioned upper opening; and

[0016] A temporary fixing mechanism prevents the inner plug from falling off by temporarily fixing the inner plug to the lower surface of the inner side of the outer cover.

[0017] While the inner plug is temporarily fixed to the outer cover by the temporary fixing mechanism, the inner plug is integrally engaged with the lower inner surface of the outer cover.

[0018] [2] The cover unit described in [1] above is characterized in that,

[0019] The aforementioned temporary fixing mechanism has an engaging portion disposed on either the outer cover or the inner plug, and a locked portion disposed on the other. The engaging portion engages with the locked portion, thereby temporarily fixing the inner plug relative to the lower inner surface of the outer cover.

[0020] [3] The cover unit described in [2] above is characterized in that,

[0021] In the positional relationship between the engaged portion and the engaged portion when the engaging portion is engaged with the engaged portion, a gap is provided for the inner plug to move relative to the lower surface of the inner side of the outer cover in the engagement direction.

[0022] [4] The cover unit described in [2] above is characterized in that,

[0023] The aforementioned temporary fixing mechanism achieves a state in which the engaging portion engages with the locked portion by rotating the inner plug about an axis relative to the lower surface of the inner side of the outer cover.

[0024] [5] A lidded container, characterized in that it comprises:

[0025] The cover unit described in any of [1] to [4] above; and

[0026] The container body is fitted with the aforementioned cover unit.

[0027] As described above, according to the present invention, a cap unit that can prevent the inner plug from falling off the lower inner surface of the outer cap even if the inner plug is peeled off from the lower inner surface of the outer cap, and a capped container that can be further improved in terms of safety and ease of use by having such a cap unit, can be provided. Attached Figure Description

[0028] Figure 1This is a perspective view showing the appearance of a covered container having the cover unit according to the first embodiment of the present invention.

[0029] Figure 2 yes Figure 1 The cross-sectional view of the covered container at line segment AA shown.

[0030] Figure 3 yes Figure 1 The cross-sectional view of the covered container at line segment BB shown.

[0031] Figure 4 Composition viewed from below Figure 1 The three-dimensional view obtained by showing the outer cover of the cover unit.

[0032] Figure 5 Composition viewed from above Figure 1 The three-dimensional view is obtained by inserting the inner part of the cover unit shown.

[0033] Figure 6 Viewed from below Figure 5 The three-dimensional image obtained by inserting the inner plug is shown.

[0034] Figure 7 (a) indicates that the inner plug is relative to Figure 2 The diagram shows a cross-sectional view of the outer cover of the cover unit in a temporarily fixed state. Figure 7 (b) is its sectional perspective.

[0035] Figure 8 (a) indicates that the inner plug is relative to Figure 2 The diagram shows a cross-sectional view of the cover unit in a temporarily fixed state. Figure 8 (b) is its sectional perspective.

[0036] Figure 9 (a) indicates that the inner plug is relative to Figure 2 The cross-sectional view shown is of the cover unit in a state where the outer cover is temporarily and fixedly engaged. Figure 9 (b) is its sectional perspective.

[0037] Figure 10 It indicates that the inner plug is relative to Figure 3 The diagram shows a cross-sectional view of the outer cover of the cover unit in its engaged state.

[0038] Figure 11 The cover unit involved in the second embodiment of the present invention is related to... Figure 1 The sectional view corresponding to line segment AA shown in the figure.

[0039] Figure 12 yes Figure 11 The cover unit shown is with Figure 1The sectional view corresponding to line segment BB shown.

[0040] Figure 13 The cover unit involved in the third embodiment of the present invention is related to... Figure 1 The sectional view corresponding to line segment AA shown in the figure.

[0041] Figure 14 yes Figure 13 The cover unit shown is with Figure 1 The sectional view corresponding to line segment BB shown.

[0042] Explanation of reference numerals in the attached figures

[0043] 1A, 1B, 1C... Cover unit; 2... Container body; 2a... Upper opening; 3... Outer container; 4... Inner container; 5... Vacuum insulation layer; 6... Internal threaded part; 7... Protrusion; 9... Cover body; 10... Outer cover; 11... Inner plug; 12... Handle; 14... External threaded part; 15... Water-stopping sealant; 20A, 20B, 20C... Temporary fixing mechanism; 21... Engaging part; 22... Engaged part; 31... Internal threaded part (engaging part); 32... External threaded part (engaged part); 41... Engaging claw (engaged part); 42... Engaging hole (engaging part); 100... Covered container. Detailed Implementation

[0044] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0045] (First Implementation)

[0046] First, as a first embodiment of the present invention, for example, regarding... Figures 1-10 The lidded container 100 with lid unit 1A shown will be described.

[0047] also, Figure 1 This is a perspective view showing the appearance of a lidded container 100 equipped with lid unit 1A. Figure 2 yes Figure 1 A cross-sectional view of the covered container 100 at line segment AA shown. Figure 3 yes Figure 1 A cross-sectional view of the covered container 100 at line segment BB shown. Figure 4 This is a perspective view obtained by observing the outer cover 10 that constitutes the cover unit 1A from below. Figure 5 This is a perspective view of the inner plug 11 that constitutes the cover unit 1A, obtained from the top side. Figure 6 This is a three-dimensional view obtained by observing the inner plug 11 from the bottom side. Figure 7(a) is a cross-sectional view showing the intermediate state in which the inner plug 11 is temporarily fixed relative to the outer cover 10 of the cover unit 1A. Figure 7 (b) is its sectional perspective. Figure 8 (a) is a cross-sectional view showing the state in which the inner plug 11 is temporarily fixed relative to the outer cover 10 of the cover unit 1A. Figure 8 (b) is its sectional perspective. Figure 9 (a) is a cross-sectional view showing that the inner plug 11 is temporarily and fixedly engaged with the outer cover 10 of the cover unit 1A. Figure 9 (b) is its sectional perspective. Figure 10 This is a cross-sectional view showing the state in which the inner plug 11 is engaged with the outer cover 10 of the cover unit 1A.

[0048] like Figure 1 , Figure 2 as well as Figure 3 As shown, the lidded container 100 of this embodiment includes: a lid unit 1A of this embodiment; and a container body 2 for the lid unit 1A to be detachably installed.

[0049] The lidded container 100 is a beverage container capable of keeping the beverage (liquid) contained in the container body 2 warm or cold through the container body 2 having a vacuum insulation structure. In addition, in the lidded container 100, the upper opening 2a of the container body 2 can be opened and closed by a lid unit 1A, which is screwed onto the container body 2.

[0050] Furthermore, the direction in which the central axis C extends is vertical; the direction orthogonal to the central axis C is called the radial or horizontal direction. Within the radial direction, the direction closer to the central axis C is called the radially inner side, or simply the inner side, and the direction farther from the central axis C is called the radially outer side, or simply the outer side. And the direction surrounding the central axis C is called the circumferential direction or the axial direction.

[0051] Specifically, the container body 2 is composed of a double-layered container. This double-layered container consists of an outer container 3, which is a bottomed cylindrical shape made of, for example, stainless steel, and an inner container 4. The openings of the two containers are joined together while the inner container 4 is housed inside the outer container 3. Furthermore, 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 blocking an exhaust port located on the bottom surface of the outer container 3 within a chamber that has been depressurized (evacuated) to a high vacuum.

[0052] The container body 2 has: a generally circular bottom 2b; a cylindrical body 2c that rises from the outer periphery of the bottom 2b in a generally cylindrical shape; a shoulder 2d that gradually narrows at the upper side of the cylindrical body 2c; and a neck 2e that rises from the shoulder 2d in a generally cylindrical shape. The upper end of the neck 2e has a circular opening as the upper opening 2a of the container body 2.

[0053] The inner circumferential surface of the neck portion 2e (the upper side of the cylindrical portion 2c) is narrower than the inner circumferential surface of the cylindrical portion 2c. Furthermore, an internal thread portion 6 is provided on the inner circumferential surface of the neck portion 2e. Below the internal thread portion 6, an annular protrusion 7 protrudes from the inner circumference of the inner container 4 and extends throughout its entire circumference.

[0054] The container body 2 has a structure in which a resin bottom part 8 is installed at the bottom 2b. The bottom part 8 is formed as a bottomed cylinder and is installed in a state where it covers the lower end of the cylindrical part 2c from the bottom 2b of the container body 2.

[0055] Furthermore, in the lidded container 100 of this embodiment, although the container body 2 has a generally cylindrical shape, the shape of the container body 2 is not particularly limited and can be appropriately modified according to size, appearance design, etc. In addition, the outer peripheral surface of the container body 2 can also be coated or printed.

[0056] In this embodiment, the cover unit 1A constitutes a plug that closes the upper opening 2a of the container body 2. Specifically, the cover unit 1A includes a cover body 9 that is screwed onto the container body 2 while covering the upper opening 2a of the container body 2.

[0057] The lid body 9 has: an outer lid 10 that covers the upper opening 2a of the container body 2; and an inner plug 11 that is inserted into the inside of the container body 2 from the upper opening 2a.

[0058] The outer cover 10 is made of, for example, a heat-resistant resin. The outer cover 10 has: an outer peripheral wall portion 10a, which is formed in a generally cylindrical shape in a manner continuous with the cylindrical portion 2c of the container body 2; a top wall portion 10b, which closes the upper part of the outer peripheral wall portion 10a; and an inner peripheral wall portion 10c, which is formed by descending from the lower surface of the top wall portion 10b (outer cover 10). In this embodiment, the inner peripheral wall portion 10c has a structure in which the central portion of the lower surface of the top wall portion 10b (outer cover 10) descends in a generally cylindrical shape.

[0059] A handle portion 12 is integrally provided on the upper part of the top wall portion 10b. That is, for a lidded container 100 equipped with this lid unit 1A, the lidded container 100 can be moved while holding the handle portion 12. The shape of the handle portion 12 is not particularly limited. For example, the handle portion 12 in this embodiment has an arched shape that rises upward from the upper surface of the top wall portion 10b and is connected radially.

[0060] Furthermore, an anti-slip annular component 13 is provided on the outer peripheral surface of the outer peripheral wall portion 10a for easy attachment and detachment. The annular component 13 is made of, for example, heat-resistant rubber such as silicone rubber, or an elastic component such as an elastomer. The annular component 13 is continuously provided with the outer peripheral surface of the outer peripheral wall portion 10a by fitting into the annular recess 10d that is provided all around the circumference of the outer peripheral wall portion 10a.

[0061] The inner plug 11 is made of, for example, a heat-resistant resin. The inner plug 11 has a generally circular bottom wall portion 11a and a generally cylindrical peripheral wall portion 11b that rises from the outer periphery of the bottom wall portion 11a. The inner plug 11 and the outer cover 10 are aligned center-to-center with the central axis C, and are integrally joined using a welding method such as ultrasonic welding or high-frequency welding, with the upper end of the peripheral wall portion 11b abutting against the center of the lower surface of the top wall portion 10b. Thus, the inner plug 11 is located at the inner center of the outer cover 10 with the central axis C aligned. Furthermore, the interior of the inner plug 11 is not limited to air as an insulating layer; it may also be configured to contain an insulating material (not shown).

[0062] In addition, an external threaded portion 14 is provided on the outer peripheral surface of the inner plug 11. In the covered container 100, the cover body 9 (cover unit 1A) is installed on the container body 2 by threading the external threaded portion 14 into the internal threaded portion 6.

[0063] Furthermore, the internal thread portion 6 and the external thread portion 14 are composed of complementary double-threaded sections. When using double-threaded sections, the lid body 9 (lid unit 1A) can be attached to or detached from the container body 2 with fewer rotational operations (approximately 180° in this embodiment).

[0064] A water-stop sealing member 15 is detachably installed at the lower end of the inner plug 11. The water-stop sealing member 15 is an annular sealing component that closes the inner side of the container body 2 with the inner plug 11 (cap body 9), and is made of elastic components such as heat-resistant rubber or elastomers, for example.

[0065] On the other hand, a flange portion 11c is provided at the lower end of the bottom wall portion 11a in the direction of lateral expansion. The water-stopping sealant 15 is fitted and installed around the entire circumference of the flange portion 11c.

[0066] Furthermore, two elastic flange portions 15a are provided on the outer circumference of the sealing member 15, protruding in the expansion direction. When the cap body 9 is screwed onto the container body 2, the sealing member 15 becomes such that the elastic flange portions 15a elastically deform while being tightly fitted to the protrusion 7 of the container body 2 throughout its entire circumference. As a result, the protrusion 7 (container body 2) and the inner plug 11 (cap body 9) can be sealed (waterproofed).

[0067] On the other hand, the water-stopping sealant 15 can be detached from the flange portion 11c by elastically deforming (stretching) itself. As a result, the cover body 9 and the water-stopping sealant 15 can be cleaned separately, and the water-stopping sealant 15 can be hygienically maintained between the flange portion 11c and the cover body 9.

[0068] Furthermore, the shape of the sealing member 15 is not necessarily limited to the shape described above. For example, the number of elastic flange portions 15a is not limited to the two described above, but may be one or more. In addition, the sealing member 15 is not limited to the structure with the elastic flange portions 15a described above, and its shape and other features may be appropriately modified. Furthermore, the sealing member 15 may also be integrally formed with respect to the inner plug 11.

[0069] In the lidded container 100 of this embodiment with the structure described above, the lid unit 1A can be installed on the container body 2 by rotating the outer lid 10 (lid body 9) clockwise (hereinafter referred to as the "closing direction") relative to the container body 2 from the state where the inner plug 11 is inserted into the inner side of the container body 2 from the upper opening 2a. This is achieved by using the thread engagement of the inner thread 6 and the outer thread 14.

[0070] On the other hand, starting from the state where the lid body 9 (lid unit 1A) is installed on the container body 2, the outer cover 10 (lid body 9) can be rotated counterclockwise relative to the container body 2 in a top view (hereinafter referred to as the "opening direction"), thereby releasing the thread engagement between the internal thread portion 6 and the external thread portion 14, and removing the lid unit 1A from the container body 2.

[0071] However, the cover unit 1A of this embodiment has a temporary fixing mechanism 20A that temporarily fixes the inner plug 11 to the lower surface inside the outer cover 10. The cover unit 1A of this embodiment has the following structure: while the inner plug 11 is temporarily fixed by the temporary fixing mechanism 20A to prevent it from falling off the outer cover 10, the inner plug 11 is integrally joined to the lower surface inside the outer cover 10 by fusion bonding.

[0072] Specifically, such as Figures 4-6As shown, the temporary fixing mechanism 20A has: a locking part 21, which is provided on either the outer cover 10 or the inner plug 11 (in this embodiment, the inner plug 11); and a locked part 22, which is provided on the other (in this embodiment, the outer cover 10).

[0073] The engaging part 21 is composed of a pair of protrusions 21a located opposite each other on the inner circumferential surface of the peripheral wall part 11b. The pair of protrusions 21a protrude in an inverted U-shape (roughly C-shaped) from their opposite positions on the inner circumferential surface of the peripheral wall part 11b toward the inside of the peripheral wall part 11b.

[0074] On the other hand, the engaging portion 22 is composed of a pair of slits 22a located opposite each other in the inner peripheral wall portion 10c of the outer cover 10. The pair of slits 22a are composed of a horizontal slit portion 22b that is open at one end in the horizontal direction and cut off at the other end in the horizontal direction, and a vertical slit portion 22c that is cut off from the other end of the horizontal slit portion 22b and upward.

[0075] In addition, the engaging portion 22 is provided with: a pair of arms 10f that extend in a hook shape in the horizontal direction toward the other end side in such a way as to form the lower side of the horizontal slit portion 22b; and a pair of engaging protrusions 10g that stand upward (toward the inside of the horizontal slit portion 22b) from the upper surface side of the pair of arms 10f on one end side of the width of the vertical slit portion 22c.

[0076] In addition, the engaging portion 22 is provided with: a pair of other end sidewall portions 22d that extend in the upward and downward direction in such a way that a vertical slit portion 22c is formed from the other end side of the horizontal slit portion 22b; and a pair of one end sidewall portions 22e that extend in the same upward and downward direction from one end side of the pair of other end sidewall portions 22d in such a way that a vertical slit portion 22c is formed.

[0077] Furthermore, a pair of ribs 23 extending in a long plate shape along the vertical direction are provided on the inner circumferential surface of the peripheral wall portion 11b of the inner plug 11. The pair of ribs 23 protrude from opposite positions on the inner circumferential surface of the peripheral wall portion 11b toward the inner side of the peripheral wall portion 11b. A pair of protrusions 21a and a pair of ribs 203 are provided at positions where they intersect each other diagonally on the inner circumferential surface of the peripheral wall portion 11b.

[0078] In this embodiment, a pair of protrusions 21a and a pair of ribs 23 are disposed in a position approximately orthogonal to each other in the diagonal direction on the inner circumferential surface of the peripheral wall portion 11b. In other words, protrusions 21a and ribs 23 are disposed alternately approximately every 90° in the circumferential direction of the peripheral wall portion 11b.

[0079] On the other hand, the inner peripheral wall portion 10c of the outer cover 10 is provided with a pair of horizontal lower end portions 24, located circumferentially between a pair of slits 22a, such as Figure 7As shown in (a) and (b), the length of the pair of ribs 23 is corresponding to the length of the vertical length of the pair of ribs 23, which extends horizontally from one end to the other end; the pair of vertical cuts 25 are cut upward from the other end of the pair of horizontal lower ends 24 to the lower surface of the top wall 10b, corresponding to the circumferential thickness of the pair of ribs 23; and the pair of abutting wall portions 10e are formed by extending the wall surface of the other end of the vertical cuts 25 downward.

[0080] Furthermore, a downwardly recessed, circular annular groove 26 is provided at the upper end of the peripheral wall portion 11b of the inner plug 11. On the other hand, a downwardly convex, circular annular engaging protrusion 27a is provided on the lower surface of the inner side (top wall portion 10b) of the outer cover 10 along the outer periphery of the inner peripheral wall portion 10c. The engaging protrusion 27a engages with the engaging groove 26.

[0081] Furthermore, a pair of grooves 27b are provided on the inner and outer peripheral sides of the engaging protrusion 27a, which cut the lower surface of the inner side (top wall portion 10b) of the outer cover 10 upwards in a circular annular shape to the lower surface of the top wall portion 10b. Thus, when the engaging protrusion 27a is engaged in the engaging groove 26, the upper end of the peripheral wall portion 11b of the inner plug 11 is engaged in the pair of grooves 27b.

[0082] In the temporary fixing mechanism 20A, by rotating the inner plug 11 about an axis around the lower surface of the inner side of the outer cover 10, the engaging part 21 engages with the engaged part 22, and the lower surface of the inner side of the outer cover 10 is temporarily fixed to prevent the inner plug 11 from falling off.

[0083] Specifically, firstly, such as Figure 7 As shown by the arrows in (a) and (b), a pair of protrusions 21a engage with the horizontal slit portion 22b of a pair of slits 22a, as... Figure 10 and Figure 11 As shown, the inner plug 11 is rotated about an axis relative to the lower surface of the inner side of the outer cover 10. At this time, the inner plug 11 rotates with the other end side (the left closed side of the C-shape) of the pair of protrusions 21a as the front end side.

[0084] Thus, the pair of protrusions 21a that engage with the pair of slits 22a are guided from one end of each horizontal slit 22b toward the other end, and the protrusions 21a of the inner plug 11 engage with the horizontal slit 22b (arm 10f) formed on the lower surface of the inner side of the outer cover 10, and are temporarily fixed to prevent them from falling off.

[0085] Furthermore, since the lower corner 21b of the other end of the pair of protrusions 21a is set to a large R-shape formed by rounding the corners, it is easily guided by the horizontal slit 22b.

[0086] Similarly, as Figure 7 As shown by the arrows in (a) and (b), starting from the state where a pair of ribs 23 are located on one end side of the horizontal lower end 24, as... Figure 8 As shown in (a) and (b), the inner plug 11 is rotated about an axis relative to the lower surface of the inner side of the outer cover 10, thereby moving a pair of ribs 23 to the other end of the horizontal lower end 24, so that a pair of ribs 23 abut against a pair of abutting walls 10e.

[0087] Therefore, the inner plug 11 cannot rotate further relative to the outer cover 10, and a pair of abutting walls 10e and a pair of ribs 23 function as anti-rotation elements (positioning elements).

[0088] In addition, such as Figure 8 As shown in (a) and (b), the positions where a pair of ribs 23 abut against a pair of abutting walls 10e correspond to the positions where a pair of protrusions 21a are guided to the other end of the horizontal slit 22b. Therefore, in this embodiment, the pair of abutting walls 10e and the pair of ribs 23 serve as anti-rotation elements, but it is also possible to use the abutment of the other end of a pair of protrusions 21a against a pair of other end side walls 22d to prevent rotation.

[0089] In addition, in the temporary fixing mechanism 20A of this embodiment, the inner plug 11 is rotated counterclockwise relative to the lower surface of the inner side of the outer cover 10 when viewed from above, and a pair of protrusions 21a of the inner plug 11 are engaged and temporarily fixed relative to the horizontal slit portion 22b (arm portion 10f) formed on the lower surface of the inner side of the outer cover 10 to prevent it from falling off.

[0090] When the cover body 9 is installed on the container body 2, the outer cover 10 is rotated clockwise as viewed from above as the closing direction. Therefore, a force is applied between the outer cover 10 and the inner plug 11 in the direction where a pair of abutting walls 10e abut against a pair of rib walls 23 or a pair of other-end side walls 22d abut against the other end side of a pair of protrusions 21a (pressing).

[0091] Therefore, as will be described later, even if the inner plug 11 is detached from the outer cover 10, the cover unit 1A can still be installed on the container body 2. Instead, the structure can be configured such that, in the case of wanting to stably remove the cover unit 1A from the container body 2 when the connection between the outer cover 10 and the inner plug 11 is broken, the inner plug 11 is temporarily fixed relative to the inner lower surface of the outer cover 10 by rotating it clockwise when viewed from above.

[0092] Next, as Figure 8As indicated by the arrows in (a) and (b), with the pair of protrusions 21a of the inner plug 11 temporarily fixed relative to the horizontal slit portion 22b (arm portion 10f) formed on the lower surface inside the outer cover 10, as shown... Figure 9 (a), (b) and Figure 10 As shown, the inner plug 11 is moved upward relative to the lower surface of the inner side of the outer cover 10.

[0093] Thus, a pair of protrusions 21a that engage with a pair of slits 22a are guided toward the top of each vertical slit portion 22c, and a pair of ribs 23 engage with a pair of vertical cut portions 25.

[0094] That is, in the positional relationship between the engaged portion 22 and the engaged portion 21 when the engaged portion 21 is engaged with the engaged portion 22, the vertical slit portion 22c forms a gap for moving the protrusion 21a of the inner plug 11 upward (in the direction of engagement) relative to the lower surface of the inner side of the outer cover 10.

[0095] Furthermore, with the engaging protrusion 27a engaged with the engaging groove 26 throughout its entire circumference, the upper ends of the peripheral wall portion 11b of the inner plug 11 are engaged with a pair of groove portions 27b throughout their entire circumference. In this state, the upper end of the peripheral wall portion 11b of the inner plug 11 can be engaged with the lower surface of the inner side of the outer cover 10.

[0096] In this embodiment, the engaging groove 26 of the inner plug 11 is engaged with the engaging protrusion 27a of the outer cover 10. Alternatively, the engagement may occur between the upper end of the peripheral wall portion 11b of the inner plug 11 and a pair of grooves 27b. Furthermore, the engagement conditions can be appropriately varied.

[0097] Furthermore, in the temporary fixing mechanism 20A of this embodiment, such as Figure 9 (a), (b) and Figure 10 As shown, when a pair of protrusions 21a are engaged with the vertical slit 22c, in the pair of protrusions 21a, one end side faces the other end sidewall 22d, and one end side (the right open side of the C-shape) faces the one end sidewall 22e.

[0098] When the lower inner surface of the outer cover 10 is engaged with the inner plug 11, the engagement is often such that one of the other ends or one end of the pair of protrusions 21a abuts against each other for positioning. Therefore, when the cover body 9 (cover unit 1A) is attached to the container body 2, if the other end of the pair of protrusions 21a abuts against the other end sidewall portion 22d, it is possible to prevent the application of peeling stress to the engagement surface between the lower inner surface of the outer cover 10 and the inner plug 11 relative to the circumferential force caused by rotation in the closing direction.

[0099] Conversely, when one end of the pair of protrusions 21a abuts against one end of the sidewall 22e, stress in the peeling direction can be prevented from being applied to the mating surface of the lower inner surface of the outer cover 10 and the inner plug 11 relative to the circumferential force caused by rotation in the opening direction. This prevents the outer cover 10 from peeling off from the inner plug 11.

[0100] Furthermore, the temporary fixed state in this embodiment is not only Figure 8 The state shown in (a) and (b) where the pair of protrusions 21a of the inner plug 11 are engaged (placed) in the horizontal slit portion 22b (arm portion 10f) formed on the lower surface of the inner side of the outer cover 10, also includes Figure 9 As shown in (a) and (b), the inner plug 11 moves upward while the engaging part 21 is engaged with the engaged part 22.

[0101] That is, in Nesse 11 from Figure 9 If the position shown in (a) and (b) is detached, the inner plug 11 will move downwards due to gravity. Figure 8 Up to the positions shown in (a) and (b), the protrusion 21a of the inner plug 11 engages with the horizontal slit 22b (arm 10f) formed on the lower surface inside the outer cover 10. Therefore, the temporary fixed state of this embodiment means that the inner plug 11 is prevented from falling off due to gravity.

[0102] In the cover unit 1A of this embodiment with the structure described above, while the inner plug 11 is temporarily fixed by the temporary fixing mechanism 20A to prevent it from falling off the outer cover 10, the inner plug 11 is integrally engaged with the lower inner surface of the outer cover 10.

[0103] In this configuration, even if the inner plug 11 peels off from the lower inner surface of the outer cover 10 due to poor fit, the inner plug 11 is temporarily fixed to the outer cover 10 by the temporary fixing mechanism 20A described above, thus preventing the inner plug 11 from falling off from the lower inner surface of the outer cover 10.

[0104] In particular, in the cover unit 1A of this embodiment, since the cover body 9 is installed on the container body 2 by screwing on the handle part 12, stress is easily applied to the lower surface of the inner side of the outer cover 10 and the mating surface of the inner plug 11 during repeated loading and unloading of the cover body 9 (cover unit 1A) relative to the container body 2.

[0105] In contrast, in the cover unit 1A of this embodiment, even if the inner plug 11 is peeled off from the lower inner surface of the outer cover 10, the inner plug 11 is temporarily fixed to the outer cover 10 by the temporary fixing mechanism 20A described above, thereby preventing the inner plug 11 and the container body 2 from falling off from the lower inner surface of the outer cover 10, and enabling safer use.

[0106] In addition, in the outer cover 10, a pair of engaging protrusions 10g are provided in the horizontal slit portion 22b (arm portion 10f), so that even if the inner plug 11 is peeled off from the lower surface inside the outer cover 10, the lower end of one end of the pair of protrusions 21a of the inner plug 11 engages with the pair of engaging protrusions 10g in the circumferential direction.

[0107] Therefore, it is possible to prevent the inner plug 11 from moving relative to the outer cover 10. Figure 7 The arrows in (a) and (b) rotate in opposite directions and maintain the inner plug 11 temporarily fixed to the outer cover 10, thereby preventing the inner plug 11 and the container body 2 from falling off the outer cover 10.

[0108] In addition, in the cover unit 1A of this embodiment, the inner plug 11 is integrally joined to the lower surface of the inner side of the outer cover 10, a pair of protrusions 21a are engaged with a pair of slits 22a, and a pair of ribs 23 are engaged with a pair of vertical cuts 25.

[0109] In this configuration, when the cover body 9 (cover unit 1A) is installed on or removed from the container body 2, a pair of ribs 23 engage with a pair of vertical cutouts 25 in the circumferential direction, thereby preventing the application of stress in the peeling direction to the mating surface of the inner lower surface of the outer cover 10 and the inner plug 11 relative to the circumferential force caused by rotation, thus preventing the original peeling of the outer cover 10 and the inner plug 11.

[0110] Furthermore, in the cover unit 1A of this embodiment, except when the cover body 9 is damaged, the temporary fixing mechanism 20A can be confirmed from the outside only in the stage before the lower surface of the inner side of the outer cover 10 is engaged with the inner plug 11, that is, in the manufacturing process.

[0111] Therefore, when the user uses the cover unit 1A, the temporary fixing mechanism 20A cannot be visually observed from the outside, thus not affecting the aesthetics of the product, nor is the mechanism or presence of the temporary fixing mechanism 20A recognizable. This results in a safer product that the user can use without perceiving any difference from previous products.

[0112] As described above, in the lidded container 100 of this embodiment, by providing the lid unit 1A of this embodiment as described above, it is possible to achieve further improvements in safety and ease of use.

[0113] (Second Implementation)

[0114] Next, as a second embodiment of the present invention, for example, regarding... Figure 11 and Figure 12 The cover unit 1B shown will be described.

[0115] also, Figure 11 It is the cover unit 1B and Figure 1 The sectional view corresponding to line segment AA shown in the figure. Figure 12 It is the cover unit 1B and Figure 1 The sectional view corresponding to line segment BB shown. Furthermore, in the following description, parts equivalent to the aforementioned cover unit 1A are omitted, and the same reference numerals are used in the accompanying drawings.

[0116] like Figure 11 and Figure 12 As shown, the cover unit 1B of this embodiment has a structure that is basically the same as the cover unit 1A, except that it has a temporary fixing mechanism 20B to replace the temporary fixing mechanism 20A.

[0117] Specifically, the temporary fixing mechanism 20B has: an internal threaded portion 31, which serves as an engaging portion disposed on the inner plug 11; and an external threaded portion 32, which serves as an engaging portion disposed on the outer cover 10.

[0118] The external thread portion 32 protrudes outward from the lower end of the outer peripheral surface of the inner peripheral wall portion 10c. On the other hand, the internal thread portion 31 protrudes inward from the upper end of the inner peripheral surface of the peripheral wall portion 11b.

[0119] In the temporary fixing mechanism 20B, the inner plug 11 rotates about an axis relative to the lower surface inside the outer cover 10, causing the internal thread portion 31 and the external thread portion 32 to engage with each other. Furthermore, since there is no anti-rotation mechanism at the end of the thread engagement, by further rotating the inner plug 11, the internal thread portion 31 and the external thread portion 32 pass past the end of the thread teeth, releasing the thread engagement, and the inner plug 11 moves downwards due to gravity.

[0120] Furthermore, unless a special operation is performed such that the internal thread portion 31 of the inner plug 11 is pushed downward relative to the external thread portion 32 provided on the lower surface inside the outer cover 10 while rotating it in the opposite direction to the rotation during installation, the external thread portion 32 will irreversibly be positioned inside the inner plug 11 than the internal thread portion 31, and the internal thread portion 31, as the engaging part, will engage with the external thread portion 32, as the engaged part.

[0121] Thus, the inner plug 11 is temporarily fixed to the lower surface of the inner side of the outer cover 10 to prevent it from falling off. In addition, while maintaining this temporary fixed state, after moving the lower surface of the inner plug 11 relative to the inner side of the outer cover 10 upward, the inner plug 11 can be engaged with the lower surface of the inner side of the outer cover 10 to achieve integration.

[0122] That is, in the temporary fixing mechanism 20B, the internal thread portion 31 and the external thread portion 32 are screwed together to pass through the thread teeth (unscrewing), and in the positional relationship between the internal thread portion 31 and the external thread portion 32, a gap is provided for moving the inner plug 11 upward (in the direction of engagement) relative to the lower surface of the inner side of the outer cover 10.

[0123] Furthermore, the temporary fixed state in this embodiment is the same as in the first embodiment, including not only the state in which the internal threaded portion 31, as the engaging portion, engages with the external threaded portion 32, as the engaged portion, but also... Figure 11 and Figure 12 The inner plug 11 is shown in the state where the inner thread 31, which is the engaging part, is engaged with the outer thread 32, which is the engaged part, and the inner plug 11 is moved upward.

[0124] That is, in Nesse 11 from Figure 11 and Figure 12 If the inner plug 11 falls off at the indicated position, it moves downwards due to gravity, resulting in the inner plug 11 engaging with the lower surface (external thread portion 32) of the inner side of the outer cover 10. Therefore, the temporary fixed state of this embodiment means that the inner plug 11 is prevented from falling off due to gravity.

[0125] In the cover unit 1B of this embodiment with the structure described above, while the inner plug 11 is temporarily fixed by the temporary fixing mechanism 20B to prevent it from falling off the outer cover 10, the inner plug 11 is integrated with the lower inner surface of the outer cover 10 by engagement.

[0126] Therefore, in the cover unit 1B of this embodiment, even if the inner plug 11 peels off from the lower inner surface of the outer cover 10 due to poor fitting, the inner plug 11 and the container body 2 are temporarily fixed to the outer cover 10 by the temporary fixing mechanism 20B described above, so the inner plug 11 can be prevented from falling off from the lower inner surface of the outer cover 10, and a safer product can be provided.

[0127] (Third Implementation)

[0128] Next, as a third embodiment of the present invention, for example, regarding... Figure 13 and Figure 14 The cover unit 1C shown will be described.

[0129] also, Figure 13It is the cover unit 1C and Figure 1 The sectional view corresponding to line segment AA shown in the figure. Figure 14 It is the cover unit 1C and Figure 1 The sectional view corresponding to line segment BB shown. Furthermore, in the following description, parts equivalent to the aforementioned cover unit 1A are omitted, and the same reference numerals are used in the accompanying drawings.

[0130] like Figure 13 and Figure 14 As shown, the cover unit 1C of this embodiment has a structure that is basically the same as the cover unit 1A, except that it has a temporary fixing mechanism 20C to replace the temporary fixing mechanism 20A.

[0131] Specifically, the temporary fixing mechanism 20C has: a pair of engaging claws 41, which are engaged portions provided on the outer cover 10; an inner peripheral lower wall portion 11d, which is formed by standing upright in a generally cylindrical shape from the center of the upper surface of the bottom wall portion 11a of the inner plug 11; and a pair of engaging holes 42, which are engaged portions provided on the inner peripheral lower wall portion 11d.

[0132] A pair of engaging claws 41 have a certain width in the horizontal direction and a certain thickness in the vertical direction, and are provided to protrude from opposing positions on the inner peripheral surface of the inner peripheral wall portion 10c toward the inner side of the inner peripheral wall portion 10c. On the other hand, a pair of engaging holes 42 are configured to cut away opposing positions on the inner peripheral lower wall portion 11d with a width corresponding to the engaging claws 41 and a vertical thickness greater than that of the engaging claws 41.

[0133] Furthermore, a pair of engagement holes 42 serving as engagement portions are provided with a pair of other-end sidewall portions 22d extending vertically from the other end side and a pair of one-end sidewall portions 22e extending vertically from one end of the pair of other-end sidewall portions 22d. In this embodiment, unlike the first embodiment described above, the pair of other-end sidewall portions 22d and the pair of one-end sidewall portions 22e are provided on the inner plug 11 side, and the effect is the same as in the first embodiment described above.

[0134] In the temporary fixing mechanism 20C, the lower surfaces of a pair of engaging claws 41 are inclined inward and upward, forming a shape that allows them to be introduced into the engaging holes 42 from below. Therefore, by moving the inner plug 11 upward relative to the lower surface of the inner side of the outer cover 10, and the inner peripheral wall portion 10c moves outward, or the inner peripheral lower wall portion 11d moves inward, or both of these elastically deform in the aforementioned directions and then return to their original positions, a so-called snap-fit ​​engagement is achieved, resulting in a state in which the pair of engaging claws 41 irreversibly engage with the pair of engaging holes 42.

[0135] Thus, the inner plug 11 is temporarily fixed to the lower surface of the inner side of the outer cover 10 to prevent it from falling off. In addition, while maintaining this temporary fixed state, after moving the lower surface of the inner plug 11 relative to the inner side of the outer cover 10 upward, the inner plug 11 can be engaged with the lower surface of the inner side of the outer cover 10 to achieve integration.

[0136] That is, in this temporary fixing mechanism 20C, when a pair of engaging claws 41 are engaged with the aforementioned pair of engaging holes 42, the thickness of the engaging holes 42 in the vertical direction is greater than that of the engaging claws 41, and there is a gap on the upper part of each engaging hole 42 in the vertical direction for each engaging claw 41 to move until it abuts. Therefore, in the positional relationship between the engaging holes 42 and the engaging claws 41, a gap is provided for the inner plug 11 to move upward (in the engagement direction) relative to the lower surface of the inner side of the outer cover 10.

[0137] Furthermore, the temporary fixed state in this embodiment is the same as in the first embodiment, not only in the state where the pair of engaging holes 42, which are engaging parts, are engaged with the pair of engaging claws 41, which are engaged parts, but also includes... Figure 13 and Figure 14 The inner plug 11 is shown in the state where the pair of engaging holes 42, which are engaging parts, are engaged with the pair of engaging claws 41, which are engaged parts, and the inner plug 11 is moved to the top.

[0138] That is, in Nesse 11 from Figure 13 and Figure 14 If the inner plug 11 falls off at the indicated position, it moves downwards due to gravity, resulting in the inner plug 11 engaging with the lower surface (engaging claw 41) of the inner side of the outer cover 10. Therefore, the temporary fixed state of this embodiment means preventing the inner plug 11 from falling off due to gravity.

[0139] In the cover unit 1C of this embodiment with the structure described above, while the inner plug 11 is temporarily fixed by the temporary fixing mechanism 20C to prevent it from falling off the outer cover 10, the inner plug 11 is installed on the lower surface of the inner side of the outer cover 10 by engagement.

[0140] Therefore, in the cover unit 1C of this embodiment, even if the inner plug 11 peels off from the lower inner surface of the outer cover 10 due to poor fitting, the inner plug 11 and the container body 2 are temporarily fixed to the outer cover 10 by the temporary fixing mechanism 20C described above, so the inner plug 11 can be prevented from falling off from the lower inner surface of the outer cover 10, and a safer product can be provided.

[0141] Furthermore, the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0142] For example, for the cover units 1A, 1B, and 1C described above, the external threaded portion 14 of the inner plug 11 is screwed onto the internal threaded portion 6 of the container body 2, but this is not necessarily the only possible structure. For example, for the cover units 1A, 1B, and 1C, the external threaded portion provided on the outer peripheral surface of the neck portion 2e (of the container body 2) may be screwed onto the internal threaded portion provided on the inner peripheral surface of the outer peripheral wall portion 10a (outer cover 10), which is a structure in which the external threaded portion is provided on the outer peripheral surface of the neck portion 2e (of the container body 2) is screwed onto the internal threaded portion provided on the inner peripheral surface of the outer peripheral wall portion 10a (outer cover 10).

[0143] Furthermore, the aforementioned cover units 1A, 1B, and 1C are designed to be freely installed on the neck portion 2e of the container body 2 via threaded engagement, but are not necessarily limited to this structure. For example, they could also be designed to be freely installed on the shoulder member installed on the neck portion 2e of the container body 2 via threaded engagement.

[0144] Alternatively, the cover units 1A, 1B, and 1C described above can also be configured to replace the engaging portion of the inner plug 11 and the engaged portion of the outer cover 10, respectively. For example, in cover unit 1A, the protrusion 21a can be provided on the outer cover 10 side, and the slit 22a can be provided on the inner plug 11 side.

[0145] Similarly, in cover unit 1B, the internal thread portion 31 can be provided on the outer cover 10 side, and the external thread portion 32 can be provided on the inner plug 11 side. Similarly, in cover unit 1C, the engaging hole 42 can be provided on the outer cover 10 side, and the engaging claw 41 can be provided on the inner plug 11 side.

[0146] Furthermore, although the above embodiments illustrate the application of the present invention to a beverage container having heat preservation and cold preservation functions through a container body 2 having the above-described vacuum insulation structure, the present invention can be widely applied to lidded containers having a container body and a lid unit that can be easily installed and removed from the container body.

Claims

1. A cover unit, detachably mounted on a container body with an upper opening, characterized in that, The cover unit includes a cover body that closes the upper opening of the container body. The cover body has: An outer cover that covers the upper opening of the container body; An inner plug, inserted into the inside of the container body from the upper opening; and A temporary fixing mechanism prevents the inner plug from falling off by temporarily fixing the inner plug to the lower surface of the inner side of the outer cover. With the inner plug temporarily fixed to the outer cover by the temporary fixing mechanism, the inner plug is integrally engaged with the lower inner surface of the outer cover.

2. The cover unit according to claim 1, characterized in that, The temporary fixing mechanism has an engaging part disposed on either the outer cover or the inner plug and a engaged part disposed on the other. The engaging part engages with the engaged part, thereby temporarily fixing the inner plug relative to the lower inner surface of the outer cover.

3. The cover unit according to claim 2, characterized in that, In the positional relationship between the engaged portion and the engaged portion when the engaging portion is engaged with the engaged portion, a gap is provided for the inner plug to move relative to the lower surface of the inner side of the outer cover in the engagement direction.

4. The cover unit according to claim 2, characterized in that, The temporary fixing mechanism achieves a state where the engaging part engages with the engaged part by rotating the inner plug about an axis relative to the lower surface of the inner side of the outer cover.

5. A container with a lid, characterized in that, have: The cover unit according to any one of claims 1 to 4; and The container body is fitted with the cover unit.

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