JP2001301783A - Lid for container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a childproof function for a container B. SOLUTION: An inner lid 10 and an outer lid 20, which are combined together in an axially movable manner, have urging portions 32, 32, etc., therebetween for urging the outer lid 20 in a disconnecting direction. Further, the inner lid 10 is provided with first engaging protruding portions 41, 41, etc., arranged on the upper surface thereof, and the outer lid 20 is provided with second engaging protruding portions 42, 42, etc., arranged on the underface of a top cover thereof. By turning the outer lid 20 in the direction in which the inner lid 10 is removed while being pressed against the inner lid 10, the outer lid 20 makes its second engaging protruding portions 42, 42, etc., engage with the first engaging protruding portions 41, 41, etc., respectively, and operates the inner lid 10 to be turned in a removing direction whereby the container B can be opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid for a container having a child-proof function which is not accidentally opened by an infant or the like.

[0002]

2. Description of the Related Art Screw-type caps are widely used for containers for storing medicines and the like.

[0003] The screw-type cap has an internal thread formed on the inner surface thereof that matches the external thread of the container. Therefore, the container can be rotated in the closing direction and attached to the mouth of the container to close the container in a watertight manner. When opening the container, the cap may be rotated in the opening direction and removed from the mouth.

[0004]

According to the prior art, the cap is merely attached to the mouth via the male screw and the female screw. There is a problem that the container can be easily removed from the container and the container is opened carelessly, which is dangerous.

Accordingly, an object of the present invention is to provide a child proof function in which an infant or the like cannot open the lid unintentionally by combining the outer lid movably in the axial direction of the inner lid. To provide a lid for a container with the same.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, a construction of the present invention comprises a screw-type inner lid detachably mounted on a mouth of a container, and an axially movable inner lid. An outer lid to be combined, an urging portion for urging the outer lid in a separating direction, and first and second engaging projections arranged in a circumferential direction on an upper surface of the inner lid and a top surface of the outer lid, respectively. The outer lid and the inner lid are prevented from coming off via auxiliary ribs that engage with each other, and the outer lid engages the first and second engagement projections against the urging portion;
The gist of the invention is to rotate the inner lid in the opening direction and the closing direction.

The urging portion is formed on the top surface of the outer lid, and can be engaged with the engaging rib on the upper surface of the inner lid only in the closing direction of the inner lid.

[0008] The inner lid can be formed on the top surface with an inner cylinder inserted into the mouth of the container and a seal rib closely contacting the end face of the mouth.

A lock ring is detachably attached to the lower end of the inner cover, and the lock ring can be separated from the inner cover to form a gap between the inner cover and the outer cover.

Further, the lock ring may be prevented from rotating in the opening direction of the inner lid with respect to the container via a ratchet engaging with each other, and may be closed in the closing direction of the inner lid via an auxiliary ratchet formed on the inner lid. Only driving may be performed.

[0011]

According to the structure of the present invention, the outer lid is movably combined in the axial direction with respect to the inner lid, and is urged in the separating direction via the urging portion. Therefore, the outer lid is axially pressed against the inner lid against the urging portion, and the second engagement projection is engaged with the first engagement projection to open and close the inner lid. It can be driven to rotate in both directions. That is,
The outer lid is rotated in the opening or closing direction while being pushed toward the inner lid, so that the inner lid is attached to the mouth of the container and the container is closed, or the container is removed from the opening and the container is opened. can do. Further, when the outer lid is separated from the inner lid via the urging portion, even if the outer lid is rotated in the opening direction, the outer lid idles with respect to the inner lid and cannot rotate the inner lid. In addition, since the outer lid is prevented from being detached from the inner lid via the auxiliary rib, the outer rib can be engaged with the inner lid by one behavior by engaging the auxiliary rib, and can be combined with the inner lid.

The urging portion formed on the top surface of the outer cover does not expose to the outside of the outer cover before the outer cover is combined with the inner cover, and does not accidentally be damaged during transportation. In addition, the biasing portion engages only with the engaging rib on the upper surface of the inner lid in the closing direction of the inner lid, so that the inner lid can be pressed by the outer lid without pushing the outer lid toward the inner lid. The container can be closed by rotating in the closing direction.

If the inner cylinder and the seal rib are formed on the inner lid,
The inner lid can be easily watertightly closed by inserting the inner cylinder into the mouth of the container and making the seal rib adhere to the end face of the mouth.

If a lock ring is attached to the lower end of the inner lid,
The lock ring can be attached to the mouth with the inner lid as it is, and the container can be initially set in an unopened state.When the inner lid is operated in the opening direction, it is separated from the inner lid and between the outer lid A gap can be formed and the fact that the container has been opened can be clearly displayed outside. In addition, the lock ring is connected to the inner lid through an appropriate connecting part, and each connecting part can easily connect the small-sectional area with the inner lid or the lock ring by rotating the inner lid in the opening direction. The inner ring and the lock ring shall be broken.

The lock ring is prevented from rotating in the opening direction of the inner lid via the ratchet, so that when the inner lid is rotated in the opening direction, it does not rotate with the inner lid.
It can be easily separated from the inner lid.

When the lock ring is driven in the closing direction of the inner lid through the auxiliary ratchet, the lock ring is closed integrally with the inner lid when the inner lid is attached to the mouth of the container and initially set. It can be reliably rotated in the direction, and there is no possibility of being separated from the inner lid carelessly. It is assumed that an auxiliary ratchet that engages with the auxiliary ratchet of the inner lid is formed on the lock ring.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

The lid of the container includes a screw-type inner lid 10 attached to the mouth B1 of the container B, and an outer lid 2 combined with the inner lid 10.
0 (FIGS. 1 and 2).

The container B is, for example, a plastic bottle having a mouth B1 formed above a shoulder B6 which is smoothly curved. An external thread B2 is formed on the outer periphery of the mouth B1, and ratchets B3, B3,... Are formed below the external thread B2. In the container B, an annular shallow groove B5 is formed on the end face of the mouth B1.

A circumferential auxiliary rib 11 is formed in the lower part of the outer periphery of the inner lid 10, and a container B is provided on the inner surface of the inner lid 10.
The female screw 12 is formed to fit the male screw B2.
On the top surface of the inner lid 10, a short inner cylinder 13 which fits the mouth B1 of the container B is vertically provided. Outside the inner cylinder 13, a seal rib 14 corresponding to the shallow groove B5 of the mouth B1 is provided. Is formed. Also, connecting portions 52, 52,...
, A lock ring 51 is provided.

On the upper surface of the inner lid 10, low block-shaped first engaging projections 41, 41,... Are arranged upward in the outer peripheral portion, and are arranged inside the first engaging projections 41, 41,. Are formed in such a manner that engaging ribs 31, 31,... Each engaging rib 31 has a slope directed toward the closing direction of the inner cover 10 (direction of arrow K2 in FIG. 1) and perpendicular to the opening direction of the inner cover 10 (direction opposite to the direction of arrow K2 in FIG. 1). The surface 31a is formed. However, as for the cross-sectional shape of each engagement rib 31, the angle between the vertical surface 31a and the upper surface of the inner lid 10 may be an acute angle, instead of the illustrated right-angled portion being an obtuse angle of 90 ° or more.

The outer lid 20 is formed in a cap shape to cover the inner lid 10 (FIGS. 1 and 3), and knurls 21 are formed on the outer periphery of the outer lid 20. The inner surface of the outer lid 20 has a step diameter corresponding to the thickness of the auxiliary rib 11 of the inner lid 10, and the inner diameter is sequentially increased downward through the auxiliary rib 23. The cross-sectional shape of the auxiliary rib 23 is It is rounded up and down in an arc shape. On the top surface of the outer lid 20, corresponding to the first engaging projections 41, 41,... Of the inner lid 10, low block-shaped second engaging projections 42, 42,. Are formed inside the second engagement protrusions 42, 42, and are provided with blade-like urging portions 32, 32, which become smoothly thin toward the front end.
Are formed diagonally downward.

The first engagement protrusions 41 of the inner lid 10 are provided.
Are formed in a width W1 and eight are arranged in the circumferential direction at every interval L1 (FIG. 4). However, FIG.
FIG. 4 is a sectional view taken along line XX of FIG.
(B) and (C) respectively show Y1-Y1 in FIG.
FIG. 4 is an enlarged cross-sectional explanatory view corresponding to the view taken along the line Y2-Y2. Are formed to have a width W2 <L1, and eight are arranged in the circumferential direction at intervals L2> W1. On the other hand, the engagement ribs 31, 31... Of the inner lid 10 have respective vertical surfaces 31a corresponding to the radial direction of the inner lid 10, and the urging portions 32, 32.
In the closing direction of the inner lid 10, the engagement rib 3
Are arranged so as to correctly face the vertical surfaces 31a, 31a,. The urging portions 32, 32,.
Four of the eight engaging ribs 31, 31... Are equally arranged.

The outer lid 20 is attached to the inner lid 10 so as to be movable in the axial direction and to be relatively rotatable (FIG. 1). At this time, the urging portions 32, 32,... Are elastically deformed by their tips contacting the upper surface of the inner lid 10 and urge the outer lid 20 in a direction away from the inner lid 10, that is, in a separating direction. The auxiliary rib 23 is engaged with the auxiliary rib 11 from below to prevent the outer lid 20 from coming off.

The lock ring 51 is a thin ring material having the same outer diameter as the inner lid 10 (FIGS. 5 and 6), and is integrally formed with the inner lid 10. A pair of auxiliary ratchets 1 formed at the lower end of the inner lid 10 are provided on the upper end surface of the lock ring 51.
Auxiliary ratchets 55, 55 are formed corresponding to 5, 15, and projections 56, 56 facing the lower end surface of the inner lid 10 are formed in the middle of the auxiliary ratchets 55, 55. The gap d between the auxiliary ratchets 55 and 15 of each set
a, each auxiliary ratchet 55, the top of each protrusion 56 and the inner lid 1
0, db, dc = db, and the gap dd between the top of each auxiliary ratchet 15 and the lock ring 51 are formed by a molding die for integrally molding the inner lid 10 and the lock ring 51, respectively.
For example, it is set sufficiently small to about 0.1 to 2 mm.

On the inner surface of the lock ring 51, ratchets 53, 53 engaging with the ratchets B3, B3,.
Are formed at every pitch angle θ1 = 45 °. Are formed at intervals of a pitch angle .theta.2 = 180 DEG, and the ratchets B3, B3 of each set are separated by a pitch angle .theta.3. However, the pitch angle θ3 is 45 ° ≦ θ3 ≦ 90 °
Is set to

The connecting portions 52, 52... Are respectively formed in an upwardly-facing triangular pyramid shape (FIGS. 5 and 7), and are arranged so as to correspond to the ratchets 53, 53 on both sides of each set of auxiliary ratchets 15, 55. Have been. Each connecting portion 52 is connected to the inside of the lower end surface of the inner lid 10 via a connecting portion 52a having a small cross-sectional area at the top, and a connecting portion 52 having a small cross-sectional area at the top outside the lower portion.
It is connected to the upper surface of the ratchet 53 of the lock ring 51 via b. Note that one side surface of the connecting portion 52 is
0, and the inner diameter of the lock ring 51 is
It is larger than the inner diameter of the inner lid 10 by about twice the height of the triangle forming the lower surface of the connecting portion 52.

The lid of such a container functions as follows.

The outer lid 20 includes second engagement projections 42, 42,.
Are positioned relative to the inner lid 10 so that the first and second bosses are located at the center of the distance L1 between the first engaging projections 41 of the inner lid 10 (FIGS. 4A and 4B). (Solid line), by pressing against the urging portions 32, 32... In the axial direction toward the inner lid 10 (in the direction of the arrow K1 in FIG. 3B), the second engagement protrusions 42 are spaced from each other by a distance L1. (A two-dot chain line in FIG. 3B). At this time, the distal ends of the urging portions 32, 32... Correctly engage with the vertical surfaces 31a, 31a of the engaging ribs 31, 31. Therefore, such an inner lid 10 will be described below.
Is referred to as an intermediate position.

On the other hand, the outer lid 20 is moved from the intermediate position to the inner lid 10.
When it is mounted on the inner lid 10 at a position slightly rotated relative to the closing direction (a dashed line in FIG. 4B, hereinafter referred to as an assembling position), each second engagement projection 42 at this time The leading end of each biasing portion 32 is slightly closer to the closing direction than the vertical surface 31a of the corresponding engaging rib 31. Therefore, when the outer lid 20 at the assembly position is pressed against the inner lid 10 and is rotated in the closing direction of the inner lid 10 as it is, the outer lid 20 separates the second engagement projections 42 from each other by the distance L1.
Before each urging portion 32 engages with the engaging rib 31, each second engaging protrusion 42 engages with the first engaging protrusion 41 on the nearest downstream side, First and second engagement projections 41, 4
The inner lid 10 can be rotationally driven in the closing direction via 1, 42, 42,.

However, the relative deviation distance Δ of the outer lid 20 with respect to the inner lid 10 from the intermediate position to the assembly position is 0 <Δ <
(L1 -W2) / 2 (FIG. 4B). Therefore, the outer lid 20 is connected to the inner lid 10 with the second engagement projection 4.
Are positioned so as to overlap the first engaging projections 41, 41, and push the inner lid 1 toward the inner lid 10.
By rotating the second engaging projections 42 at the interval L1 by relative rotation in the opening direction of 0, the assembly position can be easily positioned. 4A and 4B, when each of the urging portions 32 of the outer cover 20 engages with the engagement rib 31 of the inner cover 10 at the assembly position of the outer cover 20, Each urging portion 32 and each second engaging member are so arranged that each second engaging projection 42 simultaneously engages with the first engaging projection 41 of the inner lid 10 in the closing direction of the inner lid 10. Relative angular relationship with the abutment 42 or each engagement rib 31 and each first engagement protrusion 41
May be changed.

When the outer lid 20 is rotated in the closing direction of the inner lid 10 without pressing the outer lid 20 against the inner lid 10, each of the second engaging projections 42 becomes the first engaging projection 41. , And each of the urging portions 32 is engaged with the vertical surface 31a of the engagement rib 31 on the nearest downstream side. Therefore, if the outer lid 20 is rotated in the closing direction of the inner lid 10 as it is,
The inner lid 10 can be rotationally driven in the closing direction via the engaging ribs 31, 32,. Furthermore, the outer lid 2
When the inner cover 10 is rotated in the opening direction of the inner cover 10 while being pressed against the inner cover 10, each of the second engagement protrusions 42 enters the interval L1 and engages with the first engagement protrusion 41, The inner lid 10 can be driven to rotate in the opening direction.

Therefore, when capping the container B, the lid with the outer lid 20 at the assembly position is supplied to a capping device (not shown), and the outer lid 2 is supplied via the capping device.
The outer cover 20 is rotated in the direction in which the inner cover 10 is closed (in the direction indicated by the arrow K2 in FIG. 1) while pushing the inner cover 10 toward the inner cover 10 (in the direction of arrow K1 in FIG. 1). At this time, the outer lid 20 drives the inner lid 10 in the closing direction via the first and second engaging projections 41, 41,..., 42, 42, and the inner lid 10 via the male screw B2 and the female screw 12. 10 can be attached to the mouth B1 of the container B.

At the end of the mounting operation of the inner lid 10, the lock ring 51 at this time is
Are in contact with the ratchets B3, B3,... On the container B side, and are difficult to rotate. However, since the auxiliary ratchets 55, 15 of each set engage to drive the lock ring 51 integrally with the inner lid 10, There is no possibility that the connecting portions 52a and 52b of the connecting portion 52 are broken. The gaps da, db,... Between the inner lid 10 and the lock ring 51 are sufficiently small, and therefore, the auxiliary ratchets 55, 55, 15, 15, together with the protrusions 56, 56, connect the deformation of the lock ring 51 to each other. Limiting the elastic deformation of the portion 52. Also, the ratchets 53, 53 ...
When the lock ring 51 is elastically deformed in the circumferential direction, it can get over the ratchets B3, B3,.
Arrow K2 direction).

When the inner cover 10 is attached to the mouth B1, the inner cylinder 13 is inserted into the mouth B1, and the sealing rib 14 is brought into close contact with the bottom surface of the shallow groove B5 (FIG. 1). Part B
1 in a watertight manner and lock ring 51 with mouth B
The container B can be initially set in an unopened state by setting the container B at a fixed position at the bottom of FIG. In other words, the lock ring 51 at this time is held above the shoulder B6 of the container B, and indicates to the outside that the container B has not been opened. When the outer lid 20 is operated in the opening direction of the inner lid 10 in this state, each urging portion 32 slides on the upper surface of the inner lid 10 while climbing over the engagement rib 31 (solid line in FIG. 4C). The outer lid 20 does not idle with respect to the inner lid 10 to drive the inner lid 10 in the opening direction, so that the container B is not accidentally opened.

When the container B is opened, the urging portions 32, 3
The outer lid 20 is rotated in the opening direction of the inner lid 10 while pushing the outer lid 20 toward the inner lid 10 against 2. At this time,
The second engagement projections 42, 42,... Enter the space L1 between the first engagement projections 41, 41, respectively.
The inner lid 10 can be rotationally driven in the opening direction via the second engaging projections 41, 41, 42, 42,.

At this time, the ratchets 53, 53,...
The lock ring 51 has a ratchet B3 in the radial direction.
, B3 (FIG. 6), and lock ring 51
Stop in the opening direction of 0. Therefore, each connecting portion 52
Is connected to the connecting portion 52 by operating force from the inner lid 10 in the opening direction.
a, 52b breaks and lock ring 5
1 is separated from the inner lid 10 and dropped on the shoulder B6 of the container B (the direction of the arrow K3 in FIG. 1, FIG. 8). In other words, the lock ring 51 can form a gap d between the outer ring 20 and the lock ring 51 to indicate to the outside that the container B has been opened.

When opening the opened container B, the outer cover 20 is rotated in the opening direction while pushing the outer cover 20 toward the inner cover 10. At this time, the outer lid 20 includes the first and second engagement projections 41, 41.
The inner lid 10 is driven in the opening direction via..., 42, 42, and the inner lid 10 is removed from the mouth B1 to open the container B. In addition, the container B after opening is placed on the inner lid 1 via the outer lid 20.
0 can be rotated in the closing direction to close the mouth B1. At this time, the outer lid 20 rotates the inner lid 10 via the urging portions 32, 32,..., The engagement ribs 31, 31,.

In the above description, each of the urging portions 32 and the engagement ribs 31 may be formed on the upper surface of the inner lid 10 and the latter on the top surface of the outer lid 20. In addition, each urging unit 32
May be formed so as to be elastically deformable in the axial direction of the outer lid 20. On the other hand, the first and second engagement protrusions 41, 41,.
42 are arranged in the form of saw blades facing each other, and when the outer lid 20 is pushed toward the inner lid 10, the outer lids 20 are correctly and completely engaged with each other to automatically position the outer lid 20 at the intermediate position. It may be. Further, instead of connecting to the upper surface of the ratchet 53 via the connecting portion 52b, the connecting portion 52 may be directly connected to the upper end surface of the lock ring 51,
One of the connecting portions 52a and 52b may be omitted.
In addition, as long as at least one of the connection portions 52a and 52b can be formed, the entire shape of the connection portion 52 can be changed to an arbitrary shape other than the triangular pyramid shape.

[0040]

As described above, according to the present invention, the urging portion for urging the outer lid in the separating direction, the upper surface of the inner lid,
By providing the first and second engagement projections respectively arranged on the top surface of the outer lid, the outer lid is configured to have the first and second engagement projections against the urging portion.
The inner lid can be driven to rotate in the closing direction and the opening direction by engaging the second engagement projection, and the first and second engagement projections are disengaged by the urging portion. When the container is opened, two operations of pushing and rotating the outer lid are required, so that the operation of the outer lid is complicated, and the careless opening of the container by an infant or the like is required. There is an excellent effect that it can be effectively prevented and a good child proof function can be realized.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of the overall configuration.

FIG. 2 is an exploded perspective view of a main part.

FIG. 3 is an explanatory perspective view of a main part.

FIG. 4 is an enlarged sectional explanatory view of a main part.

[Fig. 5] Explanatory drawing of main part

FIG. 6 is a sectional view taken along the line ZZ in FIG. 1;

FIG. 7 is an enlarged perspective view of a main part.

FIG. 8 is an explanatory view of a use state.

[Explanation of symbols]

 B: Container B1 ... Port d ... Gap 10 ... Inner lid 20 ... Outer lid 11, 23 ... Auxiliary rib 13 ... Inner cylinder 14 ... Seal rib 31 ... Engagement rib 32 ... Biasing part 41 ... First engagement protrusion 42: second engaging projection 51: lock ring B3, 53: ratchet 15, 55: auxiliary ratchet

Claims (6)

[Claims] 1. A screw-type inner lid detachably attached to a mouth of a container, an outer lid combined with the inner lid movably in an axial direction, and a biasing means for urging the outer lid in a separating direction. A biasing portion, and first and second engaging protrusions arranged in a circumferential direction on an upper surface of the inner lid and a top surface of the outer lid, respectively, wherein the outer lid and the inner lid are engaged with each other. The outer lid is prevented from coming off via an auxiliary rib, and the outer lid engages the first and second engagement projections against the urging portion, and the inner lid is rotationally driven in the opening direction and the closing direction. A lid for a container, comprising: 2. The method according to claim 1, wherein the urging portion is formed on a top surface of the outer cover, and engages with an engagement rib on an upper surface of the inner cover only in a closing direction of the inner cover. Item 4. A lid of the container according to Item 1. 3. The top cover according to claim 1, wherein the inner lid is formed with an inner cylinder inserted into a mouth of the container and a seal rib closely contacting an end face of the mouth. Container lid. 4. A lock ring is detachably attached to a lower end of the inner lid, and the lock ring is separated from the inner lid to form a gap between the inner lid and the outer lid. A lid for the container according to claim 1. 5. The container lid according to claim 4, wherein the lock ring prevents the inner lid from rotating in the opening direction of the inner lid through ratchets that engage with each other with respect to the container. 6. The container lid according to claim 5, wherein the lock ring is driven only in a closing direction of the inner lid via an auxiliary ratchet formed on the inner lid.