JP2656433B2 - Container lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container lid having a spoon locking structure on the back surface of a lid body.

[0002]

2. Description of the Related Art Conventionally, this type of container lid is generally known as a container lid for pudding, yogurt or the like, and as shown in FIG. And the spoon engaging portions 200, 200 are provided so that the insertion spaces 201, 201 are opposed to each other, thereby forming a spoon engaging structure 300.
The structure is such that 401 and 402 are retained in the recesses 301 and 301 so as to be detachably held, and are formed by vacuum molding.

[0003]

In the prior art shown in FIG. 6, however, the upper portions 103, 103 of the lid main body outer surface 102 corresponding to the locking portions 200, 200 are also formed in an uneven shape because of vacuum molding. In addition, not only the aesthetic appearance was impaired, but also the outer surface shape could not be freely configured (it could not be formed into a flat shape), and it was not possible to sufficiently meet demand. Also, at the time of stocking after the lid is formed, its outer surface 10
There was also a problem that the loading convenience was poor due to the uneven shape of 2.

The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to easily and stably attach and detach a spoon by elastically deforming a locking piece. The spoon locking structure that can be held
An object of the present invention is to provide a container lid provided without any influence on the shape of the lid main body.

[0005]

According to the present invention, there is provided a technical means for achieving the above object, in which a spoon locking structure is constituted by at least a pair of locking portions provided on a back surface of a lid body. The pair of locking portions includes elastic locking pieces that lock the outer peripheral edges of both the front end side and the rear end side of the spoon, and the elastic locking pieces are hanging rods that are vertically installed from the inner surface of the top surface of the lid body. And a claw portion extending inward from the lower end of the rod portion to form a substantially L-shape so that the respective insertion spaces are opposed to each other and one or both of the front end side and the front end and the rear end for engaging the spoon. Both sides have elasticity and are constituted by a plurality of locking pieces provided with slits between adjacent sides.

[0006] A plurality of the spoon locking structures may be provided.

[0007]

According to the above technical means, at least the locking portion on the tip end of the spoon is provided with a slit between the locking pieces to form a group of locking pieces having a plurality of elasticity. Therefore, the elasticity of each locking piece is very strong. The spoon can be easily opened and removed, and the spoon can be easily attached and detached. In addition, the elasticity of each locking piece that acts separately locks the tip of the spoon to the outer peripheral edge, so that any external load is applied. Even when the lid body is deformed, the respective locking pieces stably hold the spoon on the inner surface of the lid body according to the deformation of the lid body.

Further, even if a plurality of the above-mentioned locking structures are provided, the easiness of attaching and detaching the spoon is not changed as compared with the case of only one pair, but due to the independent elastic force of the many locking pieces of the spoon. Retention stability is further improved.

Further, the elastic locking piece is formed in a substantially L-shape by a vertically extending rod portion vertically extending from the inner surface of the top surface of the lid body and a claw portion extending inward from the lower end of the rod portion. The respective insertion spaces are made to face each other, and the locking and holding can be stably performed by the vertical rod portion and the claw portion.

[0010] Further, by forming the elastic locking piece in the locking portion on the front end side of the spoon into, for example, an arc shape of the front end of the spoon so as to follow the outer peripheral shape of the front end, there is little rattling when being locked. In addition, the respective elastic holding forces of the locking pieces sufficiently act.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A container lid 1 according to the present invention comprises a spoon engaging member 4 and a pair of engaging portions 4 and 4 for engaging the outer peripheral edges of both the front and rear ends of a spoon on the inner surface of the top surface of a lid body 2. One or both of the front end side and the rear end side of the locking portions 4 and 4 that lock the spoon are provided with a desired slit 6 between adjacent portions. An embodiment is described with reference to the drawings. The illustrated example is merely an example, and a modification within the scope of the present invention will be described. Is possible.

The container lid 1 is made of a soft or hard synthetic resin material and is formed of a known desired shape using, for example, polypropylene, polystyrene, polyester, or polyethylene. 4, a spoon locking structure 3 is formed. Although the drawing intentionally forms the outer surface 2b in an uneven shape, the outer surface 2b is formed irrespective of the spoon locking structure 3.
Of course, the outer surface 2b may be flat.

The lid body 2 may be transparent, translucent, or opaque, and may be made of any material as long as it can be formed so as to be elastic enough to exert the elasticity of the elastic locking piece 5 appropriately. The material does not matter. The planar shape may be an arbitrary shape such as a polygonal shape, a circular shape, or an elliptical shape, and the corner may be formed in an R shape. The depth or thickness of the lid is also arbitrary and may be changed as appropriate. Possible and not limiting.

The locking structure 3 is configured such that the insertion spaces x, x are inserted from opposing positions on the inner surface 2a 'of the top surface 2a of the lid body 2.
Are formed so as to be opposed to each other, and are provided on a diagonal line.
And five groups.

In this embodiment, the locking structure 3 is further provided on a diagonal line, but the number is not limited at all, and may be one or more. When a plurality of the locking structures 3 are provided, the spoon 19
The ease of attachment / detachment at the time of attachment / detachment is excellent without change, and moreover, the independent elastic force of the large number of elastic locking pieces 5 acting on the spoon 19 acts more, so that the holding stability is further improved.

A plurality of elastic locking pieces 5 are provided at each corner 2c of the top surface 2a of the lid body 2 at a predetermined interval y from the corner 2c, and are integrally formed from the top surface 2a. A vertically extending rod portion 5a vertically extending in a plane arc shape, and a bent claw portion 5b integrally extending from the lower end of the rod portion 5a in a substantially circular arc shape toward the inside of the lid 20 at a substantially right angle. Are formed in a substantially L-shaped side surface, and three locking pieces 5 are provided on the same circumference by providing a desired slit 6 between adjacent ones, so that the locking portion 4 has a desired length. And a series of insertion spaces x
(See FIG. 1). The shape and number of the elastic locking pieces 5 and the width of the slits 6 (the interval between adjacent elastic locking pieces 5 and 5) are arbitrary, and can be appropriately changed within the scope of the present invention.

If the elastic locking pieces 5 are provided along the outer peripheral shape of the spoon 19 as shown in the figure, the elastic holding force of each elastic locking piece 5 sufficiently acts, and the spoon 19
Is less rattled when locked (see FIG. 1).

The elastic locking piece 5 has a bent claw 5b.
Is extended from the lower end of the vertically extending rod portion 5a inward at a substantially right angle, but it is sufficient if the locked member of the spoon 19 can be locked and held. It is not limited to what extends in a substantially right angle from the lower end.

Elastic locking formed of a plurality of locking pieces of a pair of locking portions 4 and 4 having at least the tip side of the spoon 19 having elasticity and having a slit provided between adjacent portions. If it consists of 5 pieces, spoon 19
The rear end side may not necessarily be the group of elastic locking pieces 5, for example, the insertion space x of the locking portion 4 composed of the group of elastic locking pieces 5.
The inner surface 2a 'of the top surface of the lid body 2 is provided so as to have an insertion space x' having the same width as the insertion space x at a position opposed to the inner space 2a '.
From the lower end of the vertically extending rod-attached portion 5'a, and from the lower end thereof, a bent claw which is integrally and substantially extended toward the inside of the lid 20 in a plane elongated rectangular shape. The side shape is approximately L with the portion 5'b
It may be a locking portion 4 'formed of a character-shaped elastic locking piece 5' (see FIG. 4).

The spoon 19 to be locked by the spoon locking structure 3 of the container lid 1 of the present invention may be a straight type as shown in FIG. May be applied), the folding type or the split connection type. In addition, the container lid 1 of the present structure locks the spoon 19 and also includes other eating and drinking utensils such as a fork,
Anything, such as a knife or can opener, can be held on the inner surface 2a '.

Here, an example of a molding method for the container lid 1 of the present embodiment shown in FIG. 1 will be described.

The outline of the method of manufacturing the container lid 1 is as follows: mold matching of the injection mold A (forming of the lid main body molding space v and the locking piece molding space w) → resin injection → separation of the cavity side a → stripper d and movable The mold c moves → only the stripper d moves → the container lid 1 is formed (see FIG. 3).

The mold A for injection molding has a cavity side a,
It is composed of a core side b, a movable mold c and a stripper d, and a lid main body molding space v having a desired thickness is formed between the cavity side a and the core side b, the movable mold c and the stripper d. The width (length, width), height, thickness, and the like of the lid main body molding space v are appropriately selected and are not limited at all.

On the core side b, for example, four diagonal corner portions 7 are formed in a cylindrical shape having a desired diameter over the front and rear surfaces 8 and 9 to provide a through hole 10.
A movable mold c is mounted inside the housing so as to be able to slide back and forth.

The movable mold c has a plurality of vertical grooves 14 engraved along the outer side surface 13 from the upper end edge 12 ′ of the front surface 12 to the rear, and inward from the end 14 a of each vertical groove 14. A plurality of locking piece molding spaces w each having a substantially L-shaped side surface are formed by the lateral groove 15 cut inward and the inner wall 10a of the through hole 10 on the core side b that is in sliding contact with each other. The depth, width, and the like of the locking piece molding space w are arbitrary, and appropriately correspond to the shape and the like of the elastic locking pieces 5.

The movable die c is provided with a stripper d which is slidable on the outer surface 11 on the core side b so as to be movable back and forth.
And a predetermined position 18
Up to this point, it is configured to move back and forth together with the stripper d. From the predetermined position 18, only the stripper d moves back and forth. In the illustrated example, only one connecting portion 17 is shown, but it is optional. Further, as the driving mechanism, a conventionally known mechanism such as a hydraulic cylinder is used.

Therefore, first, the injection mold A composed of the cavity side a, the core side b, the movable mold c and the stripper d is assembled, that is, the front surface 1 of the movable mold c is assembled.
6 such that the movable mold c is flush with the front surface 8 of the core side b.
Is formed in the through hole 10, and the cavity side a is combined to form a lid body molding space v and a locking piece molding space w.
Then, the desired molding resin material is, for example, melted at a temperature of 190-2.
The above space v, w at 00 ° C, internal pressure 300-600 kg / m ²
Inject and inject inside.

Although the injection port is not shown, it may be from the a side on the cavity side or from the b side on the core side, and is arbitrary.

The molded resin material is a soft or hard synthetic resin material, for example, polypropylene, polystyrene, polyester, polyethylene or the like. The container lid 1 can be made of transparent, translucent or opaque material. Also, any material may be used as long as it can be formed so as to be elastic enough to exhibit the elasticity of the elastic locking piece 5 appropriately.

Then, the top surface 2 of the lid body 2 in the space v
a container lid 1 having a spoon locking structure 3 on the inner surface 2a '
Is injection-molded (see FIG. 3 (a)), and then, when the cavity side a is separated, the entire outer surface 2b of the container lid 1 is exposed (see FIG. 3 (b), the arrow indicates the cavity side a separation). Next, when the movable mold c and the stripper d are moved together, the container lid 1 keeps the movable mold c and the stripper d while the respective elastic locking pieces 5 are fitted in the respective locking piece forming spaces w.
At the same time, it is extruded while being separated from the core side b (FIG. 3 (c)).
Reference, arrows indicate movement of movable mold c and stripper d).

Accordingly, the rear wall of each locking piece forming space w formed by the inner wall surface 10a of the through hole 10 provided on the core side b remains open without moving only the core side b. Is done. Thereafter, when only the stripper d moves forward and further pushes the entire container lid 1, the respective locking pieces 5 fitted in the respective locking piece molding spaces w are replaced with the above-mentioned spaces w.
Then, the container lid 1 is released while being elastically deformed, and the entire container lid 1 is released (see FIGS. 3D and 3E, and the arrow indicates the movement of the stripper d).

Further, instead of the structure in which only the stripper d moves in the above-described manufacturing method, only the movable mold c may be pulled back, and each of the locking piece molding spaces w of the movable mold c may be retracted.
Are released from the space w while being elastically deformed by the retracting operation of the movable mold c.
The entire container lid 1 is released from the mold, and any method may be employed (not shown).

According to the above manufacturing method, the outer surface of the container lid,
That is, the outer surface is flat with no irregularities formed by the locking structure molding on any of the outer surface and the top surface, and it is possible to provide the novel and useful container lid.

Also, in the above manufacturing method, instead of the structure in which only the stripper moves, instead of pulling back only the movable type, each of the locking pieces fitted in the respective locking piece molding space of the movable type is movable. The container lid having the above-described structure can be provided easily and reliably even by using a manufacturing method in which the mold is pulled out and moved while being elastically deformed from the space and the entire container lid is released.

Further, according to the present manufacturing method, since the locking portion 4 is constituted by the plurality of elastic locking pieces 5, the planar shape of the locking portion 4 is curved so as to follow the outer peripheral shape of the spoon 19. And the locked and held state of the spoon 19 is stabilized.

[0036]

According to the present invention, a spoon locking structure is constituted by at least a pair of locking portions provided on the back surface of the lid body, and the pair of locking portions is provided on both the front end side and the rear end side of the spoon. An elastic locking piece that locks the outer peripheral edge, the elastic locking piece includes a vertically extending rod portion that extends vertically from the inner surface of the top surface of the lid body and a claw portion that extends inward from the lower end of the rod portion. A plurality of slits are formed in a substantially L-shape so that the respective insertion spaces are opposed to each other and one or both of the front end side and the rear end side of the front end side for retaining the spoon are elastic and have slits between adjacent ones. Because of the locking pieces, the elasticity of each locking piece is not so strong and can be easily spread out to easily attach / detach the spoon. Is locked to the outer peripheral edge of both the front and rear ends of the Even if load is deformed the lid body consuming, engaging pieces each can be allowed to stably held the spoon lid body inner surface according to the deformation. Accordingly, it is possible to provide a container lid having a spoon locking structure that can be more stably locked and held while the spoon can be easily attached to and detached from the lid body.

Further, since the container lid of the present invention is provided with the above-mentioned spoon locking structure without any influence (shape of irregularities) on the outer surface (side surface, top surface, etc.), a conventional spoon locking structure is provided. The outer appearance of the entire container lid can be improved without making the outer surface uneven as in the case of the container lid, and the outer surface shape can be freely configured without limitation (it can be formed into a flat shape). It is possible to sufficiently cope with the problem, and it is possible to improve the loading convenience at the time of stocking after the lid is formed.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of a container lid of the present invention as viewed from an inner surface side.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a process chart showing an example of a method for producing the container lid of the present invention.

FIG. 4 is a plan view of another embodiment of the container lid according to the present invention, as viewed from the inside.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a longitudinal sectional side view showing a conventional container lid of this type.

[Explanation of symbols]

 1: lid 2: lid main body 2a: top surface 2a ': inner surface 2b: outer surface 3: spoon locking structure 4: locking portion 5: elastic locking piece 5a: hanging rod portion 5b: bending claw portion 6: Slit a: Cavity side b: Core side 7: Corner portion 8: Upper surface 9: Lower surface 10: Through hole 11: Outside surface c: Movable type 12: Front surface 13: Outside surface 14: Vertical groove 15: Lateral groove 16: Front surface d: stripper 17: connecting part 18: predetermined position 19: spoon 20: inside lid v: lid main body locking space w: locking piece molding space x: insertion space

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Masanori Hirata 4-51-4 Kashiwacho, Tachikawa-shi, Tokyo 13 Kashiwacho housing complex 13 (56) References Hikaru 1-1122455 (JP, U)

Claims (2)

(57) [Claims] A spoon locking structure is constituted by at least a pair of locking portions provided on the back surface of the lid main body, and the pair of locking portions cover both outer peripheral edges of the front end side and the rear end side of the spoon. An elastic locking piece for locking is provided. The elastic locking piece is substantially L-shaped by a vertically extending rod portion vertically extending from the inner surface of the top surface of the lid body and a claw portion extending inward from a lower end of the rod portion. A plurality of locking pieces which are formed in a U-shape to make the respective insertion spaces face each other and to lock the spoon, one of the front ends or both the front and rear ends have elasticity and slits are provided between adjacent ones. A container lid characterized by comprising: 2. The container lid according to claim 1, wherein a plurality of spoon locking structures are provided.