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Abstract

The lid requires a special procedure to remove. [Solution] The inner lid 2 comprises a main body portion 10 having a substantially cylindrical outer shape and configured to cover the mouth of the container 90, a ring portion 50 having a substantially cylindrical outer shape and provided on the outer circumference side of the main body portion 10, and a spring portion 70 connecting the main body portion 10 and the ring portion 50. The main body portion 10 comprises a first screw 31 configured to be fastened to the screw of the mouth of the container, and a first protrusion 24 and a second protrusion 26 provided opposite to the ring portion 50. The ring portion 50 comprises a third protrusion 64 and a fourth protrusion 66 that contact the first protrusion 24 and the second protrusion 26, respectively, and a ratchet pawl 58. The spring portion 70 has a shape that allows the main body portion 10 to flex relative to the ring portion 50, enabling axial movement and circumferential movement.

Description

Technical Field

[0001] The present invention relates to a lid.

Background Art

[0002] Generally, a threaded lid for closing the mouth of a container is used. Such lids are known to have various functions. For example, Patent Document 1 discloses a lid that is easy to open and has a function of preventing misuse by infants and the like, and in which the misuse prevention function is maintained well.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a lid having excellent functions, particularly a lid that requires a special operation for removal.

Means for Solving the Problems

[0005] According to one aspect of the present invention, the lid comprises a main body having a substantially cylindrical outer shape and configured to cover the mouth of the container, a ring portion having a substantially cylindrical outer shape and provided on the outer circumference side of the main body, and a spring portion connecting the main body and the ring portion, wherein the main body, the ring portion, and the spring portion are formed integrally. The main body comprises a first screw configured to be tightened in the first axial direction by rotating in a first rotational direction on the screw of the mouth of the container, and a first protrusion and a second protrusion provided opposite to the ring portion. The ring portion comprises a third protrusion provided opposite to the main body portion, configured to strike the ring portion when the first protrusion moves a first distance relative to the ring portion in the first rotational direction from an unloaded state; a fourth protrusion provided opposite to the main body portion, configured to strike the ring portion when the second protrusion moves a second distance relative to the ring portion in the second rotational direction opposite to the first rotational direction from an unloaded state; and a ratchet pawl that functions with a ratchet tooth provided on the mouth of the container such that the ring portion is rotatable in the first rotational direction but not rotatable in the second rotational direction, the ratchet pawl which engages with the ratchet tooth when the main body portion is attached to the screw on the mouth of the container by the first screw, and does not engage with the ratchet tooth when the ring portion moves a third distance relative to the main body portion in the second axial direction opposite to the first axial direction from an unloaded state. The spring portion has a shape that allows the main body portion to bend relative to the ring portion, enabling movement of a third distance in the first axial direction, movement of a first distance in the first rotational direction, and movement of a second distance in the second rotational direction. [Effects of the Invention]

[0006] According to the present invention, it is possible to provide a lid with excellent functionality, in particular a lid that requires a special operation to remove. [Brief explanation of the drawing]

[0007] [Figure 1]Figure 1 is a schematic diagram showing an example of the configuration of a lid and the area around the mouth of a container to which the lid is attached, according to one embodiment, and is a perspective view of these taken from diagonally above. [Figure 2] Figure 2 is a schematic diagram showing an example of the configuration of the inner lid according to one embodiment, and is a perspective view of the inner lid seen from diagonally below. [Figure 3] Figure 3 is a schematic diagram showing an example of the configuration of an inner lid according to one embodiment, and is a longitudinal cross-sectional view of the inner lid. [Figure 4] Figure 4 is a schematic diagram showing an example of the configuration of the inner lid according to one embodiment, and is a bottom view of the inner lid. [Figure 5] Figure 5 is a schematic diagram showing an example of the configuration of an inner lid according to one embodiment, and is a cross-sectional view of the inner lid taken along the VV line shown in Figure 3. [Figure 6] Figure 6 is a cross-sectional view illustrating the relative movement between the main body and the ring portion of the inner lid according to one embodiment. [Modes for carrying out the invention]

[0008] One embodiment will be described with reference to the drawings. This embodiment relates to a screw-on lid for closing the mouth of a container.

[0009] [Lid configuration] Figure 1 is a perspective view of the lid 1 according to this embodiment, and the area near the mouth of the container 90 to which the lid 1 is attached, viewed from diagonally above. The lid 1 is a screw-type cap with a spout, including a cover cap 3 that also functions as a measuring cup and an inner lid 2, although this is not an exhaustive description. Figure 2 is a perspective view of the inner lid 2 viewed from diagonally below. Figure 3 is a vertical cross-sectional view of the inner lid 2. Figure 4 is a bottom view of the inner lid 2. Figure 5 is a cross-sectional view taken along the line VV shown in Figure 3.

[0010] The inner lid 2, cover cap 3, and container 90 are made of, for example, synthetic resin. The inner lid 2 is configured to be screwed onto the container thread 94 of the container 90 by its first thread 31. The inner lid 2 and cover cap 3 are configured to be detachable by a second thread 32 for the cover cap provided on the inner lid 2 and a cover cap thread 33 provided on the cover cap 3. Although not limited to this, the container 90 is a container that contains non-food items such as detergent or fabric softener. The user is expected to remove the cover cap 3 and measure the contents from the spout 18 of the inner lid 2 into the cover cap 3.

[0011] In this embodiment, the lid 1 is configured so that when the cover cap 3 is removed from the inner lid 2 during use, the inner lid 2 does not come off the container 90. That is, when the cover cap 3 is rotated to remove it from the inner lid 2, the lid 1 is configured so that the inner lid 2 does not rotate together with the cover cap 3, a phenomenon known as "co-rotation." Specifically, under normal operation, the inner lid 2 is configured not to rotate in the loosening direction by a ratchet. Therefore, under normal operation, when the inner lid 2 is tightened to the container 90, the inner lid 2 is fixed and cannot be removed from the container 90. On the other hand, the lid 1 is configured so that the ratchet can be released by the user performing a special operation, allowing it to rotate in the loosening direction as well. That is, the user can attach and detach the lid 1 from the opening of the container 90 using a screw by performing a special operation.

[0012] For example, by making the lid 1 removable from the opening of the container 90, the user can remove the lid 1 from the container 90, wash it, and dispose of it separately when it is time to discard it. Alternatively, by making the lid 1 detachable from the opening of the container 90, the user can remove the lid 1 from the container 90 and efficiently refill the contents when reusing the container 90. Furthermore, for ease of manufacturing the product by filling the container 90 with contents and attaching the lid 1, the inner lid 2 is configured to be rotatable in the tightening direction by a ratchet when tightened onto the container 90.

[0013] [Structure of the inner lid] The inner lid 2, which constitutes the lid 1, will now be described. Hereafter, based on the orientation shown in Figure 1, the side on which the container 90 is placed relative to the inner lid 2 will be referred to as the lower side, and the side on which the cover cap 3 is placed relative to the inner lid 2 will be referred to as the upper side. Also, as shown in Figure 1, the downward direction will be referred to as the first axis direction A1, and the upward direction will be referred to as the second axis direction A2.

[0014] The inner lid 2 has a general shape in which a roughly cylindrical body portion 10 and a ring portion 50 are coaxially doubled. That is, the inner lid 2 has a roughly cylindrical outer shape and a body portion 10 configured to cover the mouth of the container 90, and a roughly cylindrical outer shape and a ring portion 50 provided on the outer side of the body portion 10. The body portion 10 and the ring portion 50 are connected by a spring portion 70. These body portion 10, ring portion 50 and spring portion 70 are formed as a single unit.

[0015] The main body 10 comprises a cylindrical first cylindrical portion 12. A closing surface 14 is provided in the middle of the first cylindrical portion 12 in the vertical direction. The closing surface 14 has an opening 16 and a spout 18 in its central part, and the rest of it is closed. A second screw 32 for the cover cap is provided on the inner circumferential surface near the upper end of the first cylindrical portion 12. A first screw 31 for fastening the inner lid 2 to the container 90 is provided on the inner circumferential surface near the lower end of the first cylindrical portion 12.

[0016] The cylindrical opening of the container 90 is formed by a third cylindrical portion 92. A container thread 94 is provided on the outer circumference of the third cylindrical portion 92. The first thread 31 of the first cylindrical portion 12 of the inner lid 2 is configured to be tightened against the container thread 94 of the container 90.

[0017] The first screw 31 and the second screw 32 are, for example, right-handed screws. By rotating the main body 10 in the first rotation direction R1 shown in FIG. 1, the main body 10 is tightened against the container 90 in the first axial direction A1. Conversely, by rotating the main body 10 in the second rotation direction R2 opposite to the first rotation direction R1, the main body 10 is loosened from the container 90 in the second axial direction A2 opposite to the first axial direction A1. By rotating the cover cap 3 in the first rotation direction R1, the cover cap 3 is tightened against the main body 10 in the first axial direction A1. Conversely, by rotating the cover cap 3 in the second rotation direction R2, the cover cap 3 is loosened from the main body 10 in the second axial direction A2.

[0018] As described above, the ring portion 50 has a second cylindrical portion 52 configured to surround the main body 10. On the inner wall 54 at the end of the second cylindrical portion 52 in the first axial direction A1, that is, at the lower end of the second cylindrical portion 52, a plurality of ratchet claws 58 in the form of leaf springs in this embodiment, which are related to the fixing of the middle lid 2 to the container 90, are provided. Around the periphery of the end of the outer circumference of the third cylindrical portion 92 of the container 90 in the first axial direction A1, ratchet teeth 98 corresponding to the ratchet claws 58 of the ring portion 50 are provided. When the middle lid 2 is tightened against the third cylindrical portion 92 of the container 90 by the first screw 31 of the middle lid 2 and the container screw 94 of the container 90, the ratchet claws 58 of the ring portion 50 act on the ratchet teeth 98 of this container 90. Therefore, the position of the ratchet claws 58 in the first axial direction A1 is designed to be suitable for this.

[0019] In this embodiment, the height of the ring portion 50 is designed to cover most of the outer circumference of the first cylindrical portion 12 of the main body 10. Although there are no other special structures on the outer wall of the second cylindrical portion 52 of the ring portion 50 in this embodiment, patterns, anti-slip irregularities, etc. may be provided. Also, as will be described later, since an operation of lifting the ring portion 50 in the second axial direction A2 is performed, the second cylindrical portion 52 may have a larger diameter on the second axial direction A2 side than on the first axial direction A1 side.

[0020] Above the ratchet pawl 58 on the inner circumference of the ring portion 50, an inner edge portion 62 that projects inward of the ring portion 50 is provided. The inner circumferential position of the inner edge portion 62 corresponds to the inner circumferential position of the lower end surface 22 of the first cylindrical portion 12 of the main body portion 10. Therefore, the lower end surface 22 of the first cylindrical portion 12 and the inner edge portion 62 face each other.

[0021] The main body portion 10 and the ring portion 50 are connected by a plurality of spring portions 70 provided in the circumferential direction. As shown in FIGS. 2 and 3, the spring portion 70 includes a first column portion 72 extending in the first axial direction A1 from the lower end surface 22 of the first cylindrical portion 12 of the main body portion 10, a second column portion 74 extending in the second axial direction A2 from the inner edge portion 62 of the ring portion 50, and a crossbar portion 76 extending in the circumferential direction so as to connect the first column portion 72 and the second column portion 74.

[0022] The crossbar portion 76 is provided horizontally in a plane perpendicular to the first axial direction A1 and the second axial direction A2 in the unloaded state. By the crossbar portion 76 deflecting in the vertical direction, the main body portion 10 and the ring portion 50 connected by the crossbar portion 76 can be displaced relative to each other in the first axial direction A1 and the second axial direction A2.

[0023] As shown in FIG. 5, the crossbar portion 76 has a curved shape in which the central portion bulges outward in the radial direction in the unloaded state. By having such a shape, the crossbar portion 76 can deflect and expand and contract in its longitudinal direction. That is, the main body portion 10 and the ring portion 50 connected by the crossbar portion 76 can be displaced relative to each other in the circumferential direction, that is, in the first rotation direction R1 and the second rotation direction R2.

[0024] As shown in Figures 2, 3, and 5, the main body portion 10 is provided with a plurality of first protrusions 24 and second protrusions 26 extending in the first axial direction A1 from the lower end surface 22 of the first cylindrical portion 12. That is, the first protrusions 24 and second protrusions 26 are provided so as to face the inner edge 62 of the ring portion 50. The ring portion 50 is also provided with a plurality of third protrusions 64 and fourth protrusions 66 extending in the second axial direction A2 from the inner edge 62. That is, the third protrusions 64 and fourth protrusions 66 are provided so as to face the lower end surface 22 of the main body portion 10. The third protrusions 64 are positioned so as to strike the first protrusions 24 when it moves a first distance D1 in the first rotation direction R1 from an unloaded state. The fourth protrusions 66 are positioned so as to strike the second protrusions 26 when it moves a second distance D2 in the second rotation direction R2 from an unloaded state.

[0025] As in this embodiment, the first protrusion 24 and the second protrusion 26 may be arranged alternately in the circumferential direction. Similarly, the third protrusion 64 and the fourth protrusion 66 may be arranged alternately in the circumferential direction. Arranging them alternately in the circumferential direction is preferable because it distributes the force transmitted by contact between the first protrusion 24 and the third protrusion 64 or between the second protrusion 26 and the fourth protrusion 66 in the circumferential direction.

[0026] As in this embodiment, the spring portion 70 may be arranged alternately with right-facing and left-facing springs that are reversed relative to each other in the circumferential direction. That is, a spring portion 70 in which a first column portion 72 is provided at the end of the first rotation direction R1 and a second column portion 74 is provided at the end of the second rotation direction R2 relative to the crossbar portion 76, and a spring portion 70 in which a second column portion 74 is provided at the end of the first rotation direction R1 and a first column portion 72 is provided at the end of the second rotation direction R2 relative to the crossbar portion 76, may be arranged alternately in the circumferential direction. In this case, in the circumferential direction, they are arranged in the order of first column portion 72-crossbar portion 76-second column portion 74, second column portion 74-crossbar portion 76-first column portion 72, first column portion 72-crossbar portion 76-second column portion 74, ... Unlike this embodiment, only the spring section 70 arranged in the order of first column section 72 - crossbar section 76 - second column section 74, or only the spring section 70 arranged in the order of second column section 74 - crossbar section 76 - first column section 72, may be used.

[0027] [Regarding the procedure for tightening the lid onto the container] When the inner lid 2 is tightened onto the container 90, the main body 10 having the first screw 31 and the ring portion 50 rotate as a single unit. That is, when the second cylindrical portion 52 of the ring portion 50 is gripped and the ring portion 50 is rotated in the first rotational direction R1, first the crossbar portion 76 bends, and the fourth protrusion 66 provided on the ring portion 50 rotates by a second distance D2 in the first rotational direction R1 and strikes the second protrusion 26 provided on the main body portion 10. Furthermore, as the ring portion 50 rotates in the first rotational direction R1, the fourth protrusion 66 of the ring portion 50 pushes the second protrusion 26 of the main body portion 10, and the main body portion 10 also rotates in the first rotational direction R1.

[0028] In this way, the ring portion 50 and the main body portion 10 rotate in the first rotational direction R1, and the inner lid 2, which is an integrated unit of the main body portion 10 and the ring portion 50, is screwed onto the container 90 in the first axial direction A1 by the first thread 31 of the main body portion 10 and the container thread 94 of the container 90. Once the inner lid 2 is screwed onto the container 90, the ratchet pawl 58 of the ring portion 50 eventually reaches the position where the ratchet teeth 98 of the container 90 are located. At this time, due to the action of the ratchet teeth 98 of the container 90 and the ratchet pawl 58 of the ring portion 50, the inner lid 2, which is an integrated unit of the main body portion 10 and the ring portion 50, can rotate in the first rotational direction R1, which screws onto the container 90 in the first axial direction A1. In this way, the inner lid 2 can be securely attached to the container 90.

[0029] When the inner lid 2 is firmly attached to the container 90, the main body 10 will no longer rotate. For example, when the inner lid 2 is firmly attached to the container 90, the tip of the first screw 31 of the inner lid 2 comes into contact with the stopper 96 of the container 90, and the main body 10 will no longer rotate. When the force that rotates the ring portion 50 in the first rotational direction R1 is released, the bent crossbar portion 76 returns to its original state, and a gap of second distance D2 is created between the fourth protrusion 66 and the second protrusion 26. At this time, the ring portion 50 is not displaced relative to the main body 10 in either the first axial direction A1 or the second axial direction A2, and is in an unloaded state where no force is applied in either the first axial direction A1 or the second axial direction A2.

[0030] When the inner lid 2 is attached to the container 90, the main body 10 is gripped and rotated in the first rotational direction R1, as follows: The inner lid 2, which is connected by the spring portion 70 and integrates the main body 10 and the ring portion 50, rotates in the first rotational direction R1 and is screwed onto the container 90 in the first axial direction A1. When resistance is generated to the rotation of the ring portion 50 due to the action of the ratchet teeth 98 of the container 90 and the ratchet pawl 58 of the ring portion 50, the first protrusion 24 provided on the main body 10 first rotates by a first distance D1 in the first rotational direction R1 and strikes the third protrusion 64 provided on the ring portion 50. Furthermore, when the main body 10 rotates in the first rotational direction R1, the first protrusion 24 of the main body 10 pushes the third protrusion 64 of the ring portion 50, and the ring portion 50 also rotates in the first rotational direction R1. In this way, the main body 10 and the ring portion 50 rotate in the first rotational direction R1, and the inner lid 2, which is formed by the main body 10 and the ring portion 50 as one unit, is screwed onto the container 90 in the first axial direction A1.

[0031] [Regarding preventing the lid from loosening on the container] After the inner lid 2 is tightened against the container 90, even if one attempts to rotate the inner lid 2 in the opposite direction, the interaction between the ratchet teeth 98 of the container 90 and the ratchet pawl 58 of the ring portion 50 prevents the inner lid 2 from rotating in that direction. That is, for example, when the second cylindrical portion 52 of the ring portion 50 is gripped and the ring portion 50 is attempted to rotate in the second rotational direction R2, the ratchet pawl 58 catches on the ratchet teeth 98, and the ring portion 50 cannot rotate in the second rotational direction R2.

[0032] The same applies when removing the cover cap 3 from the inner lid 2 during use. That is, when removing the cover cap 3 from the inner lid 2, the cover cap 3 is gripped and rotated in the second rotational direction R2. At this time, a force can be applied to the main body 10 via the cover cap 3, causing it to rotate in the second rotational direction R2. At this time, first, the second protrusion 26 provided on the first cylindrical portion 12 of the main body 10 rotates by a second distance D2 in the second rotational direction R2 and strikes the fourth protrusion 66 provided on the ring portion 50. Furthermore, when the cover cap 3 tries to rotate in the second rotational direction R2, the second protrusion 26 of the main body 10 pushes the fourth protrusion 66 of the ring portion 50, causing the ring portion 50 to also try to rotate in the second rotational direction R2. However, the ratchet pawl 58 catches on the ratchet teeth 98, and the ring portion 50 cannot rotate in the second rotational direction R2. Therefore, the main body 10 cannot rotate in the second rotational direction R2. In other words, even when the cover cap 3 is rotated in the second rotational direction R2, the main body 10 does not rotate and loosen relative to the container 90.

[0033] [Regarding the procedure for removing the lid from the container] The operation of the lid 1 when it is necessary to remove it from the container 90 for disposal or other reasons will be explained with reference to Figure 6. Figure 6 is a cross-sectional view showing the relative movement of the main body 10 and the ring portion 50 of the inner lid 2. In Figure 6, the left diagram shows the inner lid 2 attached to the mouth of the container 90, and the right diagram shows the state in which the ring portion 50 is lifted relative to the main body 10 when the inner lid 2 is removed from the container 90. Note that the container 90 and cover cap 3 are not shown in Figure 6.

[0034] When removing the lid 1 from the container 90, the user lifts the ring portion 50 relative to the main body portion 10 fixed to the container 90 by a third distance D3 in the second axial direction A2. At this time, the ring portion 50 moves relative to the main body portion 10 in the second axial direction A2, against the elastic force of the crossbar portion 76 of the spring portion 70.

[0035] As the ring portion 50 is displaced relative to the main body portion 10 in the second axial direction A2, the engagement between the ratchet teeth 98 of the container 90 and the ratchet pawl 58 of the ring portion 50 is released. In this state, the user applies a force to rotate the ring portion 50 in the direction of removing the lid 1 from the container 90, that is, in the second rotational direction R2. At this time, this force is transmitted to the main body portion 10 by the engagement between the third protrusion 64 of the ring portion 50 and the first protrusion 24 of the main body portion 10. As a result, the main body portion 10 rotates in the second rotational direction R2, and the lid 1 is removed from the container 90.

[0036] When the ring portion 50 is pushed relative to the main body portion 10 by a fourth distance of a third distance D3 or more in the second axial direction A2, the first protrusion 24 and / or the second protrusion 26 of the main body portion 10 strike the inner edge portion 62 of the ring portion 50. Alternatively, when the ring portion 50 is pushed relative to the main body portion 10 by a fourth distance of a third distance D3 or more in the second axial direction A2, the third protrusion 64 and / or the fourth protrusion 66 of the ring portion 50 strike the lower end surface 22 of the main body portion 10. In other words, the inner edge portion 62 functions as a first abutment portion provided on the ring portion 50, configured to strike the first protrusion 24 or the second protrusion 26 when it moves by a fourth distance, thereby restricting the movement of the main body portion 10 relative to the ring portion 50 by a distance of a fourth distance or more in the first axial direction A1. Furthermore, the lower end surface 22 functions as a second abutment portion provided on the main body 10, configured to strike the third protrusion 64 or the fourth protrusion 66 when it has moved by the fourth distance, thereby restricting the movement of the main body 10 relative to the ring portion 50 by more than the fourth distance in the first axial direction A1. In this way, the relative movement of the ring portion 50 relative to the main body 10 in the second axial direction A2 is restricted so as not to exceed the fourth distance, thereby restricting the amount of deflection of the crossbar portion 76 and preventing damage to the spring portion 70.

[0037] As described above, with the lid 1 of this embodiment, the lid 1 can be removed from the container 90 by a special operation in which the ring portion 50 is lifted relative to the main body portion 10 in the second axial direction A2 while the ring portion 50 is rotated. Furthermore, with the lid 1 of this embodiment, when the cover cap 3 is rotated without lifting the ring portion 50 relative to the main body portion 10 in the second axial direction A2, the cover cap 3 and the inner lid 2 are prevented from rotating together.

[0038] [Uses of the lid] In the above-described embodiment, the lid 1 has the structure described above for the purpose of preventing the inner lid 2 from coming off the container 90 when the cover cap 3 is removed during use. That is, under normal operation, the inner lid 2 does not rotate relative to the container 90 even when the cover cap 3 is turned, while the inner lid 2 can be removed from the container 90 by performing a special operation. The application of a similar mechanism is not limited to the lid 1 of the above-described embodiment which has an inner lid 2. For example, a similar mechanism can be used as a child-resistant lid, configured to be difficult for infants to open. That is, the main body 10 is a closed lid, and a lid 1 can be realized that cannot be opened unless the ring portion 50 is lifted and rotated during opening.

[0039] [Differentiation] The first protrusion 24 and the third protrusion 64 may be located anywhere as long as they face each other and are positioned to strike each other and transmit force during rotation. Similarly, the second protrusion 26 and the fourth protrusion 66 may be located anywhere as long as they face each other and are positioned to strike each other and transmit force during rotation. For example, the first protrusion 24 and the second protrusion 26 may be located on the outer circumference of the first cylindrical portion 12, and the third protrusion 64 and the fourth protrusion 66 may be located on the inner circumference of the second cylindrical portion 52.

[0040] Similarly, the first column portion 72 of the spring portion 70 may extend from the main body portion 10 toward the ring portion 50, and the second column portion 74 of the spring portion 70 may extend from the ring portion 50 toward the main body portion 10, and these may extend in any direction. For example, the first column portion 72 may extend radially outward from the outer circumferential surface of the first cylindrical portion 12 of the main body portion 10, and the second column portion 74 may extend radially inward from the inner circumferential surface of the second cylindrical portion 52 of the ring portion 50, with a crossbar portion 76 provided in the circumferential direction to connect the first column portion 72 and the second column portion 74.

[0041] However, the configuration in this embodiment, in which the first protrusion 24, the second protrusion 26, and the first columnar portion 72 extend from the lower end surface 22 of the first cylindrical portion 12 in the first axial direction A1, and the third protrusion 64, the fourth protrusion 66, and the second columnar portion 74 extend from the inner edge 62 in the second axial direction A2, has the advantage of allowing the diameter of the inner lid 2 to be reduced.

[0042] The crossbar portion 76 of the spring portion 70 does not have to be provided horizontally. For example, the second column portion 74 side may be provided so that it is in the first axial direction A1 more than the first column portion 72. [Explanation of Symbols]

[0043] 1: Lid, 2: Inner lid 10: Main body, 12: First cylindrical part, 14: Closure surface, 16: Opening, 18: Spout, 22: Lower end surface, 24: First protrusion, 26: Second protrusion 31: First screw, 32: Second screw 50: Ring section, 52: Second cylindrical section, 54: Inner wall, 58: Ratchet pawl, 62: Inner edge section, 64: Third protrusion, 66: Fourth protrusion 70: Spring section, 72: First column section, 74: Second column section, 76: Crossbar section 3: Cover cap, 33: Cover cap screw 90: Container, 92: Third cylindrical section, 94: Container screw, 96: Stopper, 98: Ratchet teeth

Claims

1. The main body has a roughly cylindrical outer shape and is configured to cover the mouth of the container, It has a roughly cylindrical outer shape, and a ring portion is provided on the outer circumference of the main body, A spring portion connecting the main body portion and the ring portion. Equipped with, The main body, the ring, and the spring are formed as a single unit. The main body is, A first screw is configured to be tightened in the first axial direction by rotating in the first rotational direction on the screw at the mouth of the container, A first convex portion and a second convex portion are provided so as to be opposite to the ring portion. Equipped with, The aforementioned ring portion is A third protrusion is provided so as to be opposite to the main body, and is configured to strike the first protrusion when it moves a first distance in the first rotational direction relative to the ring from an unloaded state, A fourth protrusion is provided facing the main body, and is configured to strike the ring when the second protrusion moves a second distance in a second rotational direction opposite to the first rotational direction relative to the ring, A ratchet pawl that functions with a ratchet tooth provided on the mouth of the container such that the ring portion is rotatable in the first rotational direction but not rotatable in the second rotational direction, wherein the ratchet pawl engages with the ratchet tooth when the main body is attached to the screw of the mouth of the container by the first screw, and does not engage with the ratchet tooth when the ring portion moves a third distance in the second axial direction opposite to the first axial direction relative to the main body from an unloaded state. Equipped with, The spring portion has a shape that allows the main body portion to bend relative to the ring portion, enabling movement of a third distance in the first axial direction, movement of a first distance in the first rotational direction, and movement of a second distance in the second rotational direction. lid.

2. The aforementioned spring portion is A first column portion extending from the main body portion toward the ring portion, A second column portion extending from the ring portion toward the main body portion, A horizontal beam extending in the circumferential direction to connect the first column and the second column, Equipped with, The aforementioned crossbar section has a curved shape in which the central part bulges radially outward. The lid according to claim 1.

3. The first and second protrusions extend in the first axial direction within the main body. The third and fourth protrusions extend in the second axial direction within the ring portion. The first column extends from the main body in the first axial direction, The second column extends from the ring portion in the second axial direction. The lid according to claim 2.

4. The main body portion restricts the movement of the ring portion from moving a fourth distance or more, which is a third distance or more, in the first axial direction. The ring portion includes a first abutment portion configured to strike when the first or second protrusion moves by the fourth distance, or The main body portion includes a second abutment portion configured to strike the third or fourth protrusion when it moves by the fourth distance. A lid according to any one of claims 1 to 3.

5. The main body is, The spout and A second screw is configured such that the cover cap is tightened in the first axial direction as it rotates in the first rotational direction. A lid according to any one of claims 1 to 3, further comprising the above.

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