JP2020011770A - Container with lid and container lid - Google Patents

Abstract

To provide a container with a lid, in which a sheet lid is securely retained in a container box while using a disposable type sheet lid, and the sheet lid can be easily opened and closed.SOLUTION: When a peripheral part 23a of a sheet lid 23 is placed on an upper flange 22a of a container box 22, a locking projection 25 of the sheet lid 23 fits into a mounting hole H of the container box 22, thereby, the sheet lid 23 is fixed to the container box 22. With the sheet lid 23 fixed to the container box 22, the sheet lid 23 is bent by a half-cut groove M, this polygonal line part becomes a hinge, a movable piece 23Y of the sheet lid 23 opens above the container box 22 while leaving a fixed piece 23X of the sheet lid 23 on the upper flange 22a side of the container box 22.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a container with a lid and a container lid for storing and transporting various products and parts.

In a factory that manufactures various products, parts, foods, and the like, a container provided with a dedicated lid is sometimes used to prevent foreign substances from being mixed. As shown in FIG. 13A, for example, this type of container 1 with a lid includes a flat rectangular container box 2 and a lid 3 that closes an upper surface opening. A hinge portion 5 is provided on the upper flange 2a of the container box 2, and a pivot shaft of the lid 3 is detachably attached to the hinge portion 5. The lid 3 can be removed from the container box 2 by removing the rotation shaft from the hinge 5.
In the container 1 with a lid as described above, when dirt adheres to the lid 3, the lid 3 is removed from the hinge 5, washed, and reattached to the hinge 5 for use. By doing so, the inside of the container can be kept clean even if it is used for a long time.
Such a container with a lid usually has a container box and a lid made of resin, and is formed by press molding or injection molding. The thickness of the container box and the lid is often about several mm in consideration of durability.
Patent Literatures 1 to 3 and the like are known as conventional techniques for containers with lids.

JP 2013-95426 A JP 2009-83864 A JP 2005-170416 A

  However, in such a conventional container with a lid, when cleaning the lid, the lid is manually removed one by one and then reattached. In particular, in a factory that uses a large amount of containers, the work load of container cleaning may cause a reduction in operation efficiency.

On the other hand, the present inventors have developed a disposable sheet-shaped lid (hereinafter, referred to as a sheet lid) as a lid used for a container with a lid.
As shown in FIG. 13B, the container with lid 10 includes a container box 12 and a sheet lid 13. The sheet lid 13 is a simple one which is used by being placed on the upper flange 12a of the container box 12, and has a peripheral portion 13a mounted on the flange 12a and a nest portion 13b formed so as to be depressed and surrounded by the peripheral portion 13a. And
Such a sheet lid 13 is formed by forming a sheet material made of a thermoplastic resin (flexible material) by vacuum forming, and cutting it according to the container dimensions. The sheet surface of the sheet lid 13 is transparent so that the inside of the container box 12 can be seen, and its thickness is suppressed to approximately 2 mm or less.

When the peripheral edge 13a of the sheet lid 13 is placed on the upper flange 12a when the sheet lid 13 is put on the container box 12, the nest portion 13b fits into the upper opening of the container box 12 with this. Thereby, it is possible to prevent the sheet lid 13 from slipping off from the upper opening of the container box 12.
In such a container 10 with a lid, if the sheet lid 13 becomes dirty, it is discarded as needed and replaced with a new one. The trouble of cleaning the sheet lid 13 while keeping the inside of the container clean is eliminated.

However, when such a disposable type container with a lid is used, there is a problem that the sheet lid is relatively thin and lightweight, and thus is easily detached from the container box. When storing containers with lids outdoors, the sheet lid may be scattered by the wind. In particular, at the top of the stacked containers with lids, since the sheet lid is frequently skipped, the current situation is that when storing the container with lid, the container box and the sheet lid are separately separated and stacked in different places. .
As a countermeasure to prevent the seat cover from coming off, it is conceivable to fix the seat cover to the container box with fasteners.However, if fasteners are used, it will take time to open and close the lid, or new fasteners may be lost. Problems arise.

The present invention has been made in view of such a situation, and provides a container with a lid that employs a disposable-type sheet lid, that securely holds the sheet lid in a container box, and that allows easy opening and closing of the sheet lid. The purpose is.
Another object of the present invention is to provide a container sheet lid that can be stably fastened to an upper opening of a container box and that can be easily opened and closed.

(First invention)
In order to solve the above problems, a container with a lid according to the first invention employs the following configuration. That is,
A peripheral portion (23a) of a sheet lid (23) made of a flexible material is placed on the upper flange (22a) of the container box (22), and is formed so as to be surrounded by the peripheral portion of the sheet lid. A nested portion (23b) fitted into the upper surface opening of the container box, the container with a lid,

A mounting hole (H) provided in an upper flange of the container box,
A locking projection (25) integrally formed downward on the periphery of the seat lid;
A fixed piece (23X) on the locking projection side and a movable piece (23Y) on the opposite side to the locking projection are provided so as to penetrate the lower surface of the peripheral portion of the sheet lid in a linear direction. And a half-cut groove (M) for partitioning

When the peripheral edge of the sheet lid is placed on the upper flange of the container box, the locking projection of the sheet lid fits into the mounting hole of the container box, whereby the sheet lid is fixed to the container box. While
When the sheet lid is bent by the half-cut groove in a state where the sheet lid is fixed to the container box, a movable portion of the sheet lid is fixed to the seat lid by bending the broken line portion into a hinge. A piece is configured to be opened above the container box, leaving a piece on the upper flange side of the container box.

According to the container with a lid according to the first aspect of the present invention, the use of the sheet lid made of a flexible material facilitates disposable use, so that there is no problem of the burden of cleaning the lid as described above. If the sheet lid becomes dirty when the container is used, a new one can be obtained immediately, thereby effectively preventing foreign matter from entering the container.
Further, according to the container with the lid, the seat lid can be fixed to the container box by fitting the locking projection of the sheet lid into the mounting hole of the container box. As a result, it is possible to enhance the integration between the container box and the sheet lid, and to eliminate the problem that the sheet lid is scattered by the wind when storing the container. Even if the sheets are stacked while the sheet covers are fixed to the container box, the uppermost sheet covers are not blown out, so that such stacking and storage can be performed with confidence.

Furthermore, according to the container with the lid, the sheet lid is bent by the half-cut groove in a state where the sheet lid is fixed to the container box, whereby the movable piece of the sheet lid that covers the upper opening of the container box is opened. That is, the broken line portion formed by the half-cut groove of the seat lid serves as a hinge. Thus, the seat lid can be easily opened and closed, and a container with a lid that is extremely easy to use can be realized.
Furthermore, in the container with the lid, when the sheet lid is not bent by the half-cut groove, a broken line portion (hinge) does not occur in the sheet lid, so that the fixed piece and the movable piece of the sheet lid remain connected in the plane direction. Will be kept. For this reason, it is possible to prevent the movable piece of the seat cover from being unexpectedly opened due to being blown by the wind, and to secure the airtightness. It is also possible to use the sheet lid without bending it in the half-cut groove when storing and transporting the product, and to bend it in the half-cut groove only when removing the product from the container box.

(Second invention)
In the configuration of the first invention, when the sheet lid is fixed to the container box, the operation is easy, and once the sheet lid is fixed, the sheet lid stably stays in the container box. It is desirable to be able to remove it with a moderate force. That is, in order to use the container with the lid comfortably, it is important to devise a mounting hole and a locking projection for fixing the container box and the seat lid.
The present inventors investigated the material and flange shape of the existing container box, the durability of the seat lid, and the like, and found various shapes, dimensions, and the like of locking projections and mounting holes for fixing the sheet lid to the container box. Was considered. As a result of repeated trial production based on this, we found the following unique configuration.

That is, the container with the lid according to the second invention is, in addition to the configuration of the first invention,
Said mounting hole (H) which is drawn out in a long hole shape along the upper flange (22a) of said container box (22);
A hollow projection formed so that a seat surface of a peripheral portion (23a) of the seat cover (23) swells downward, and having a locking portion (25b) formed in a ship bottom shape at a tip end side thereof. A locking projection (25);
A pair of barbs (K) provided at both longitudinal ends of the locking portion of the locking projection,
When the locking projection is fitted into the mounting hole, the locking projection is elastically deformed, so that the pair of barbs are locked to the hole edges (22e) at both ends in the longitudinal direction of the mounting hole. It is composed of

According to the configuration of the second invention, when the locking projection of the sheet lid fits into the mounting hole of the container box, the pair of barbs of the locking projection are locked to the hole edges at both ends in the longitudinal direction of the mounting hole. Since the interval between these turns is substantially equal to the length of the mounting hole, the movement of the seat lid can be restricted within this length range. In other words, the place where the sheet lid is fastened is not a “point” but a “line” image. Thereby, the mounting strength of the seat lid can be increased, and the fixed state can be stabilized. After the sheet lid is fixed to the container box, the sheet lid does not easily come off the container box due to the effect of the return of the locking projection.
The “elongated shape” of the mounting hole in the second invention may be an elongated hole that extends along the upper flange of the container box and fits within the flange width. For example, an oval, a rectangle, an oval, or the like can be employed.

Further, in the configuration of the second invention, since the locking projection is formed in a hollow shape, the locking projection is likely to be elastically deformed (bent). In particular, the bottom of the locking projection in the locking projection has a shape in which the inverted portion is easily pushed inward. As a result, the locking projection is easily fitted into the mounting hole, and the work of mounting the seat lid on the container box can be easily performed.
Even when the seat cover is removed from the container box, the return of the locking projection can be crushed or broken with an appropriate force, and the work of replacing the seat cover fixed to the container box can be simplified.

  Further, in the configuration of the second aspect of the invention, when the seat lids are overlapped with each other, the locking projections effectively prevent the seat lids from coming into close contact with each other within the length of the boat-bottomed locking portion. Thereby, it is also possible to suppress a problem (blocking) in which the stacked sheet lids adhere to each other and are difficult to peel off.

(Third invention)
The container with a lid according to the third invention is, in addition to the configuration of the second invention, further
A groove (25C) continuous with the outer peripheral surface of the locking projection in the projection height direction;
A rib portion (25d) is provided on the inner peripheral surface of the locking projection, and a rib portion (25d) that is integrated with the groove portion on the front and back sides in the projection height direction.

  According to the configuration of the third aspect of the present invention, since the groove that extends in the projection height direction is provided on the outer peripheral surface of the locking projection, the hollow locking projection is easily deformed due to expansion and contraction of the groove width of the groove. In addition, since the rib is provided on the inner peripheral surface of the locking projection integrally with the groove and connected to the front and back in the height direction of the projection, the shape of the rib reinforces the hollow locking projection and prevents its collapse. This makes it easier for the locking projection to enter the mounting hole due to a synergistic effect with the groove, thereby improving the workability of mounting the seat lid on the container box. Further, the fixing state of the container box and the seat lid can be further stabilized by improving the durability of the locking projection.

(4th invention)
In order to solve the above problems, a container lid according to a fourth aspect of the invention employs the following configuration. That is,
In the container lid according to the fourth invention, a peripheral portion (23a) of a sheet-like lid body (23) made of a flexible material is placed on an upper flange (22a) of the container box (22), and the lid is placed on the upper flange (22a). A container lid configured so that a nested portion (23b) formed so as to be depressed and surrounded by a peripheral portion of a main body is fitted into an upper surface opening of the container box,

A locking projection (25) integrally formed downward on the periphery of the lid body;
A fixing piece (23X) provided on the lower side of the peripheral portion of the lid main body in a linear direction, and the lid main body is provided on the locking projection side and a movable piece (23Y) opposite to the locking projection. And a half-cut groove (M) for partitioning

When the peripheral portion of the lid body is placed on the upper flange of the container box, the locking projection of the lid body fits into a mounting hole (H) provided in the upper flange of the container box, whereby While the lid body is fixed to the container box,
When the lid body is bent by the half-cut groove in a state where the lid body is fixed to the container box, the broken line portion becomes a hinge, so that the movable piece of the lid body fixes the lid body. A piece is configured to be opened above the container box, leaving a piece on the upper flange side of the container box.

  The container lid according to the fourth invention has substantially the same configuration as the sheet lid of the container with a lid according to the first invention. Thereby, similarly to the above-described sheet lid, the container can be stably fixed to the upper opening of the container box, and can be easily opened and closed. Other effects can be obtained in the same manner as in the first invention.

(Fifth invention)
In the container lid according to the fifth invention, a peripheral portion (23a) of a sheet-like lid body (23) made of a flexible material is placed on an upper flange (22a) of the container box (22), and the lid is placed on the upper flange (22a). A container lid configured so that a nested portion (23b) formed so as to be depressed and surrounded by a peripheral portion of a main body is fitted into an upper surface opening of the container box,

A locking frame (28) integrally formed so as to be folded downward on the periphery of the lid main body;
The lid body is provided so as to penetrate the lower surface of the peripheral portion in a linear direction, and the lid body is fixed to the locking frame side (23X) and the movable piece (23Y) opposite to the locking frame. And a half-cut groove (M) for partitioning

When the peripheral edge of the lid body is placed on the upper flange of the container box, the locking frame of the lid body fits into the tip of the upper flange of the container box, so that the lid body is inserted into the container box. Is fixed,
When the lid body is bent by the half-cut groove in a state where the lid body is fixed to the container box, the broken line portion becomes a hinge, so that the movable piece of the lid body fixes the lid body. A piece is configured to be opened above the container box, leaving a piece on the upper flange side of the container box.

  The container lid according to the fifth invention employs a locking frame as a means for fixing the lid body, instead of the locking projection of the fourth invention. With such a configuration, similarly to the fourth aspect, the container lid can be stably fastened to the upper opening of the container box, and can be easily opened and closed. Other effects are the same as those of the first invention. Furthermore, in the configuration of the container lid according to the fifth aspect of the present invention, a mounting hole is not required in the upper flange of the container box, so that mechanical strength of the upper flange can be easily secured.

(Sixth invention)
The container lid according to the sixth invention comprises the configuration of the fourth invention,
Instead of the half-cut groove (M), the cover body (23) is provided along a linear direction on a sheet surface at a peripheral portion of the lid body, and the lid body (23) is fixed to the fixing piece (23X) on the locking projection side. It is configured to have a perforated cut groove that partitions the locking projection and the movable piece (23Y) on the opposite side.

According to the configuration of the sixth invention, the lid body is bent by employing perforated cut grooves instead of the half cut grooves of the fourth invention. According to such a configuration, the movable piece of the lid main body that covers the upper opening of the container box is opened by bending the lid main body along the perforated cut groove. In other words, the broken line portion formed by the perforated cut groove of the lid body serves as a hinge. As a result, the lid body can be easily opened and closed, and a very convenient container lid can be realized.
Further, in the container lid, when the lid body is not bent by the perforated cut groove, a broken line portion (hinge) does not occur in the sheet lid, so that the fixed piece and the movable piece of the sheet lid are connected in a plane direction. Will be kept as it is. For this reason, it is possible to prevent the movable piece of the seat cover from being unexpectedly opened due to being blown by the wind, and to secure the airtightness. Other effects can be obtained in the same manner as in the fourth invention.

(Seventh invention)
The container lid according to the seventh invention comprises the configuration of the fifth invention,
Instead of the half-cut groove (M), the cover body (23) is provided along a linear direction on a sheet surface of a peripheral portion of the lid main body, and the lid main body (23) is fixed to the fixing piece (23X) on the locking frame side; It is configured to have perforated cut grooves for partitioning the locking frame and the movable piece (23Y) on the opposite side.

  In the configuration of the seventh invention, the lid main body is bent by employing perforated cut grooves instead of the half cut grooves of the fifth invention. According to such a configuration, the same effect as in the fifth aspect can be obtained by bending the lid body along the perforated cut groove.

(First to seventh inventions)
In the first to seventh inventions, the use of the container is not limited. The present invention can be applied to containers used for storing and transporting various products, parts, foods, and the like. The container shape is desirably of a general flat rectangular type, but the present invention is not necessarily limited to the same type.
The first to seventh inventions may be combined with other inventions described in this specification.
The reference numerals in the parentheses indicate the correspondence with the components described in the embodiments described later.

It is a perspective view showing a container with a lid concerning an embodiment of the present invention. It shows the container box of the container with the lid, wherein (A) is a plan view and (B) is a front view. It shows the sheet lid of the container with the lid, wherein (A) is a bottom view and (B) is a front view. 4A and 4B show a locking projection of the seat cover, wherein FIG. 4A is a partially enlarged bottom view, and FIG. FIG. 5A is a sectional view taken along line 5A-5A shown in FIG. 4, and FIG. 5B is a sectional view taken along line 5B-5B shown in FIG. (A) is a partial enlarged view for explaining a half cut groove of the sheet lid, and (B) is a partial enlarged sectional view showing a state where the sheet lid is opened. It is the elements on larger scale which show a mode that the locking projection of the same sheet lid is attached to the upper flange of a container box. (A)-(C) is a schematic diagram for demonstrating the size relationship between the mounting hole of the container box of the container with the lid, and the locking projection of the sheet lid. It is a partially expanded sectional view which shows a mode that the container with a lid is piled up. It is the elements on larger scale which show the modification of a locking protrusion and a mounting hole. (A) is a partial enlarged view showing another modification of the locking projection and the mounting hole, and (B) is a partial enlarged view showing a modification in which a locking frame is used instead of the locking projection. (A) is a partial enlarged view showing another modification of the locking frame, and (B) is a plan view showing a modification of the seat lid. (A) is a sectional view showing a container with a lid according to a conventional form, and (B) is a sectional view showing a container with a lid employing a sheet lid.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the technical scope of the present invention is not limited to the configurations of the following embodiments.
[Configuration of container with lid]
1 to 3 show a container 20 with a lid according to the embodiment. As shown in FIG. 1, the lidded container 20 includes a container box 22 and a sheet lid 23. A transparent sheet lid 23 is placed on the upper opening of the container box 22. The outer shapes of the container box 22 and the sheet lid 23 are rectangular (substantially square) when viewed from above, as shown in FIGS. One side of the rectangle is 30 to 40 cm, and the box depth is about 10 to 15 cm.
Various products and parts are stored in the container 20 with a lid. Since the upper surface opening of the container box 22 is closed by the sheet lid 23, foreign matter is prevented from entering the container.

The container box 22 and the sheet lid 23 are formed of a resin material. The container box 22 is formed of a conventionally known thermoplastic resin such as polypropylene, and the sheet lid 23 is formed of a thermoplastic resin capable of securing transparency while maintaining appropriate flexibility. The thickness of the container box 22 is about 2 to 3 mm, and the thickness of the sheet lid 23 is about 0.3 to 1 mm.
As a material of the sheet lid 23, for example, a polyvinyl resin (PVC hard, PVC soft, PVDC, PVA), a polystyrene resin (PS, AS, ABS, HDPE, LDPE, EVA), polypropylene, polyacetal, acrylic ( PMMA, MS), cellulose acetate, polycarbonate, polyethylene terephthalate, polyamide (nylon type), polyurethane, fluororesin (ethylene trifluoride, tetrafluoroethylene, tetrafluoroethylene, hexafluoropropylene copolymer, Fluorinated ethylene / ethylene copolymer, vinylidene fluoride, etc. are selected according to the use of the container.

  The container box 22 has an upper flange 22a and a lower flange 22b at the upper and lower ends of the box body 22c. These flanges extend horizontally with a substantially constant width along the rectangular outer periphery of the container box 22. Below the four corners of the box body 22c, four legs 22d are attached (see FIG. 2B). When stacking the container boxes 22, the legs 22d of the upper container box 22 enter the inside of the lower container box 22, and the upper lower flange 22b is placed on the lower upper flange 22a. Thereby, the plurality of container boxes 22 can be stably stacked.

  As shown in FIG. 3, the sheet lid 23 is formed in accordance with the size of the upper flange 22a of the container box 22, and has a rectangular peripheral portion 23a and is formed so as to be recessed downward by being surrounded by the peripheral portion 23a. And a nested portion 23b. The width of the peripheral portion 23a substantially matches the width of the upper flange 22a. The nesting portion 23b is formed by forming a substantially square recess in a cross shape with a certain depth when viewed from the plane, and is formed in a size slightly smaller than the upper opening of the container box 22. That is, the nest portion 23b enters the inside of the container box 22 with an appropriate gap (play).

In such a sheet lid 23, when the peripheral portion 23 a of the sheet lid 23 is placed on the upper flange 22 a of the box body 22 c, the nest 23 b fits into the upper surface opening of the container box 22. At this time, since the nesting portion 23b comes into contact with the inner side surface of the container box 22, the sheet lid 23 is prevented from slipping off from the upper opening of the container box 22.
In the present embodiment, four dents are arranged in a cross at the nest portion 23b of the seat lid 23, but another dent may be added to the sheet surface between the dents. The seat surface can be reinforced by providing the seat surface with a plurality of depressions. It is also possible to make characters such as a product name and a company name three-dimensionally concave.

A locking projection 25 is integrally provided on a peripheral portion 23 a of the sheet lid 23 as a fixing means for fixing the container lid 22 to the container box 22. Two locking projections 25 are arranged at a predetermined interval on one side of the rectangular peripheral portion 23a. The upper flange 22a of the container box 22 is provided with two mounting holes H that can be fitted to the locking projections 25. These mounting holes H are arranged at equal intervals with the two locking projections 25 of the upper flange 22a.
When the peripheral portion 23a of the sheet lid 23 is placed on the upper flange 22a of the container box 22, the locking projections 25 coincide with and overlap the mounting holes H. Then, the seat lid 23 is fixed to the container box 22 by fitting the locking projection 25 into the mounting hole H.

As shown in FIG. 6, a half-cut groove M is formed in the peripheral portion 23 a of the seat cover 23 below the seat surface and between the nesting portion 23 b and the locking projection 25. The half-cut groove M has a V-shaped cross section on one side of the sheet lid 23 including the locking projection 25 and is provided so as to penetrate in a linear direction. The half-cut groove M separates the sheet lid 23 into a fixed piece 23X on the locking projection 25 side and a movable piece Y on the non-locking cut groove side.
In a state where the half-cut groove M has never been bent, the sheet lid 23 blocks the upper surface opening of the container box 22 while the fixed piece 23X and the movable piece Y of the sheet lid 23 are connected in the plane direction. When the sheet lid 23 is bent by the half-cut groove M, the broken line portion becomes a hinge, and the movable piece Y opens upward while leaving the fixed piece 23X in the upper flange 22a of the container box 22. Once such a hinge is formed, the upper opening of the container box 22 opens when the movable piece Y of the sheet lid 23 is lifted, and the upper opening is closed when the movable piece Y is returned. That is, the broken line portion formed by the half-cut groove M of the seat cover 23 becomes a hinge, so that the seat cover 23 can be freely opened and closed.
The depth of the half-cut groove M is set according to the thickness and material of the sheet lid 23. Although FIG. 6 shows a V-shaped cross section, the groove shape is not particularly limited, and may be an I-shaped cross section, a W-shaped cross section, or the like. Further, a configuration in which two half-cut grooves M are arranged in parallel may be adopted.

Next, the configuration of the mounting hole H and the locking projection 25 will be described in more detail.
First, as shown in FIG. 2, the mounting hole H of the container box 22 is formed in a rectangular shape (a long hole shape) along the length direction of the upper flange 22a. When the flange width is about 20 mm, the dimension (hole length) in the longitudinal direction of the mounting hole H is preferably about 20 to 30 mm, and the dimension (hole width) in the short direction is such that the strength of the upper flange 22a can be sufficiently secured. About 10 mm is desirable.

As shown in FIGS. 4 and 5, the locking projection 25 is a hollow projection formed so that the seat surface of the seat cover 23 expands downward. A slot-shaped relief hole N is open on the sheet surface of the locking projection 25 (see FIG. 5), and the locking projection 25 is raised up in connection with the hole edge of the relief hole N. The thickness of the locking projection 25 is substantially equal to the thickness of the seat surface of the seat lid 23.
The shape of the locking projection 25 is such that a plate-shaped rising portion 25a is formed in parallel from the edge of the relief hole N in the longitudinal direction, and the hollow space S of the locking projection 25 is connected to the tip of the rising portion 25a. A ship bottom-shaped locking portion 25b is formed so as to surround it. Both ends in the longitudinal direction of the locking portion 25b are turned K.
As described above, two locking projections 25 are provided on the upper flange 22a of the container box 22, but each of the locking projections 25 has the same configuration.

FIG. 8 shows the size relationship between the mounting hole H and the locking projection 25.
Assuming that the length of the mounting hole H in the longitudinal direction is a1 and the length in the short direction is b1, a1 is longer than the longitudinal dimension a2 of the rising portion 25a of the locking projection 25, and b1 is the maximum width of the rising portion 25a. It is larger than b2. The dimension c2 (interval of the return K, K) in the longitudinal direction of the locking portion 25b is ensured to be sufficiently larger than a1.
By setting the size of the mounting hole H and the locking projection 25 in this manner, when the locking projection 25 fits into the mounting hole H, the return K of the locking projection 25 is set to the inside of the projection as shown in FIG. The mounting holes H penetrate the mounting holes H and are locked to the hole edges 22e at both ends in the longitudinal direction of the mounting holes H. Then, when the return K of the locking projection 25 is locked to the hole edge 22 e through the mounting hole H, the locking projection 25 cannot be removed from the mounting hole H by the effect of the return K.
The peel strength of the sheet lid by the return K is desirably set so that the container box 22 does not come off even if only the sheet lid 23 is lifted, for example, when the weight of the container box 22 is 1 to 3 kg.

As shown in FIG. 4, a plurality of grooves 25 c are provided on the outer peripheral surface of the locking projection 25 in the projection height direction. A total of eight grooves 25c are provided to face the vicinity of the middle and both ends of the locking projection 25 in the longitudinal direction, respectively, and two to face the vicinity of both ends of the locking projection 25 in the longitudinal direction. Have been.
On the inner peripheral surface of the locking projection 25, a rib portion 25d is provided integrally with the groove portion 25c in a front-to-back direction and continuous in the projection height direction. That is, the inner peripheral surface of the locking projection 25 protrudes inside the projection as a rib 25d by the amount of the recess formed by the groove 25c of the locking projection 25. Since the groove 25c is integrated front and back, the number of the ribs 25d is also eight in total.
When the locking projection 25 is fitted into the mounting hole H of the upper flange 22a, stress concentrates on the bottom portion of the groove portion 25c (the crest of the rib portion 25d), and the groove width shrinks accordingly. This makes it easier for the locking projection 25 to shrink in the plane direction (the sheet surface direction). In particular, since the plurality of grooves 25c are arranged at equal intervals in the longitudinal direction of the locking projection 25, the locking projection 25 contracts preferentially in this direction.
Further, inside the locking projection 25, the rib portion 25d exerts an effect of projecting in the height direction of the projection, thereby increasing the durability of the locking projection 25.

[How to use container 20 with lid]
Next, a method of using the lidded container 20 according to the present embodiment will be described.
In the case of using the container 20 with a lid, products and parts manufactured in a factory or the like are packed in a container box 22 and then a sheet lid 23 is put on the container box 22. At this time, when the peripheral portion 23a of the sheet lid 23 is fitted to the upper flange 22a of the container box 22, the locking projection 25 overlaps the mounting hole H of the upper flange 22a. In this state, when the locking projection 25 is pushed into the mounting hole H, the locking projection 25 is elastically deformed and penetrates the mounting hole H, and the return K comes below the upper flange 22a. Thereby, the sheet lid 23 is fixed to the container box 22, and the upper surface opening of the container box 22 is closed.

  When taking out a product or the like from the container box 22, the sheet lid 23 is bent at the position of the half cut groove M so as to lift one side of the sheet lid 23. Then, the broken line portion becomes a hinge, and the movable piece Y of the seat cover 23 is opened to a range of approximately 180 °. As a result, products and the like can be taken out with the container box 22 fully open.

  When the sheet cover 23 becomes dirty, the sheet cover 23 is removed from the container box 22 and replaced with a new sheet cover 23. In this case, when the seat lid 23 is pulled so as to be separated from the upper flange 22a, the return K of the locking projection 25 is broken and comes off the mounting hole H. Thereafter, a new sheet lid 23 for replacement is attached to the container box 22 as described above. Note that the removed old sheet lid 23 may be disposed of or may be processed as a recycled material.

  When stacking the lidded containers 20, as shown in FIG. 9, the upper lidded container 20 is placed on the sheet lid 23 while the sheet lid 23 is fixed to the container box 22. At this time, the locking projection 25 of the seat lid 23 protrudes below the upper flange 22a, but does not protrude above the upper flange 22a, so that it does not hinder the stacking of the upper-stage lidded containers 20. When the lidded containers 20 are stacked in this way, the height of the container box 22 without the lid can be suppressed to the same height as the container box 22 without the lid, because the thickness of the sheet lid 23 is small.

[Effects of Container with Lid According to Embodiment]
According to the container 20 with the lid, since the disposable sheet lid 23 made of a flexible material is easily used, it is not necessary to clean the sheet lid 23 even if it becomes dirty. If the sheet lid 23 becomes dirty during use of the container, the sheet lid is immediately replaced with a new one, thereby effectively preventing foreign matter from entering the container.
In the container 20 with a lid, the seat lid 23 can be fixed to the container box 22 by fitting the locking projection 25 of the sheet lid 23 into the mounting hole H of the container box 22. Thereby, the integrity of the container box 22 and the sheet lid 23 can be increased, and the sheet lid 23 can be prevented from being scattered by the wind when storing the container.
Furthermore, even if the sheet lids 23 are stacked while being fixed to the container box 22, the uppermost sheet lids 23 are not blown out, so that such stacked storage can be performed with security. If the container box 22 and the sheet lid 23 are stored in different places, it is necessary to take out and set a necessary amount of the container box at the time of use. Since the seat 22 and the seat lid 23 can be used immediately, such a work load does not occur.

Further, according to the container 20 with the lid, the sheet lid 23 is bent by the half-cut groove M in a state where the sheet lid 23 is fixed to the container box 22, so that the broken line portion becomes a hinge and the upper surface of the container box 22 The movable piece Y of the sheet lid 23 closing the opening is opened. Thus, the seat lid 23 can be easily opened and closed.
Furthermore, in the container 20 with a lid, when the sheet lid 23 is not bent by the half-cut groove M, since a broken line portion (hinge) does not occur in the sheet lid 23, the fixed piece 23X and the movable piece Y of the sheet lid 23 are flat. It is kept connected in the direction. For this reason, it is possible to prevent the movable piece of the seat cover from being unexpectedly opened due to being blown by the wind, and to secure the airtightness.

  Further, according to the container 20 with the lid, when the locking projection 25 of the sheet lid 23 fits into the mounting hole H of the container box 22, a pair of the locking projection 25 Since the return K is locked, the movement of the seat cover 23 can be restricted within this length range. Since the place where the seat lid 23 is fastened becomes an image of a "line" instead of a "dot", the mounting strength of the seat lid 23 can be increased and the fixed state can be stabilized.

Further, according to the container 20 with the lid, since the locking projection 25 is formed in a hollow shape, the locking projection 25 is easily elastically deformed (bent). In particular, the bottom K-shaped locking portion 25b of the locking projection 25 is easily deformed inward at the portion of the return K. Thereby, the locking projection 25 easily fits into the mounting hole H, and the work of mounting the sheet lid 23 to the container box 22 can be easily performed.
When the sheet lid 23 is removed from the container box 22, the return K of the locking projection 25 can be crushed or broken with an appropriate force, and the replacement work of the sheet lid 23 fixed to the container box 22 can be easily performed. can do.

  Furthermore, according to the container 20 with a lid, when the seat lids 23 are overlapped, the locking projections 25 are overlapped in order to effectively prevent the seat lids 23 from sticking to each other within a range of the length of the bottom-shaped locking portion 25b. It is also possible to suppress a problem (blocking) in which the sheet lids 23 adhere to each other and become difficult to peel off.

  Further, according to the container 20 with the lid, since the groove 25c is provided on the outer peripheral surface of the locking protrusion 25 in the protrusion height direction, the hollow locking protrusion 25 is easily deformed by expansion and contraction of the groove width of the groove 25c. . In addition, since the rib 25d is provided on the inner peripheral surface of the locking projection 25 so as to be integrated with the groove 25c in the front and back sides and is continuous in the height direction of the projection, the shape of the rib 25d reinforces the hollow locking projection 25. Prevent crushing. This makes it easier for the locking projection 25 to enter the mounting hole due to a synergistic effect with the groove 25c, thereby improving the workability of mounting the seat lid 23 to the container box 22. In addition, the fixing state of the container box 22 and the seat lid 23 can be further stabilized by improving the durability of the locking projection 25.

[Modification]
Although the lidded container 20 according to the embodiment has been described, the embodiment of the present invention is not limited to this, and may include various modifications.
As shown in FIGS. 8A and 8B, when a rectangular mounting hole H and an oblong locking projection 25 are used in combination in the container box 22, the length a1 of the mounting hole H in the longitudinal direction is reduced. It is necessary to secure a longitudinal gap d between the protrusion 25 and the dimension a2 of the rising portion 25a in order to smoothly insert the lock protrusion 25 (FIG. 8C). . That is, the dimension a2 of the rising portion 25a of the locking projection 25 is set to be smaller than the dimension a1 of the mounting hole H in the longitudinal direction.

However, if the gap d is large, the container box 22 and the sheet lid 23 may rattle in this range. Also, when the rising portion 25a of the locking projection 25 is biased to one side of the gap d, the sheet lid When the sheet lid 23 is closed, its position is not determined, and the sheet lid 23 may protrude from the upper flange 22a.
As a countermeasure against such a problem, as shown in Modifications 1 and 2 in FIG. 10, it is possible to employ means for suppressing looseness of the sheet lid 23 fixed to the container box 22.

The configuration shown in Modification 1 of FIG. 10 is one in which corners 22f are provided at four corners of a rectangular mounting hole H. Due to the chamfered portion 22f, the length a1 of the mounting hole H in the longitudinal direction and the size a2 of the rising portion 25a of the locking projection 25 are not changed, and the length a from the rising portion 25a to the hole edge of the mounting hole H is maintained. The gap d2 in the direction can be reduced. As a result, the above-mentioned rattling can be suppressed, and the problems of the peel strength of the sheet lid 23 and the displacement can be solved.
In addition, in Modification Example 1 of FIG. 10, the edge of the hole of the chamfered portion 22f is formed in an arc shape (a round shape). However, as long as the gap d2 can be reduced, another curve or a linear shape is used. May be adopted.

  The configuration shown in Modification 2 of FIG. 10 employs an auxiliary hole H2 for positioning and an auxiliary projection 26 as a backlash preventing means. An auxiliary projection 26 is provided on the upper flange 22a of the container box 22 separately from the locking projection 25, and an auxiliary hole H2 is provided at a position corresponding to the auxiliary projection 26 on the peripheral edge 23a of the sheet lid 23. When the engaging projection 25 is fitted into the mounting hole H, the seat lid 23 is positioned on the container box 22 by fitting the auxiliary projection 26 into the auxiliary hole H2 at the same time. Thereby, the above-mentioned rattling can be suppressed, and the problems of the peel strength of the sheet lid 23 and the displacement can be solved.

Various shapes can be adopted as the shape of the fixing means of the seat lid 23 instead of the above-described embodiment.
For example, a third modification shown in FIG. 11A employs a slit-shaped mounting hole H and a plate-shaped locking projection 27. The upper flange 22a of the container box 22 is provided with two slit-shaped mounting holes H in the length direction. Two plate-shaped locking projections 27 are provided on the peripheral edge portion 23a of the sheet lid 23 at positions corresponding to these. A pair of barbs K are provided at the distal end of each locking projection 27 so as to be locked to the edge of the mounting hole H.
Even with such a configuration, the sheet lid 23 can be easily and stably fixed to the container box 22. By employing the plate-shaped locking projection 27, the manufacturing cost of a mold and the like can be reduced.

Modification 4 shown in FIG. 11B employs a locking frame 28 instead of the locking projection 25. The locking frame 28 is folded downward so as to sandwich the upper flange 22a at the end of the peripheral portion 23a of the seat lid 23. A predetermined length extends along one side of the rectangular peripheral portion 23a. Inside the lower end of the locking frame 28, a stopper 28a bent in a mountain shape in cross section is formed.
When attaching the sheet lid 23 to the container box 22, the upper flange 22a is inserted into the frame groove T of the locking frame 28, and the stopper 28a is hooked on the mounting hole H. As a result, the upper flange 22a is fitted into the locking frame 28 by a predetermined length.
According to such a configuration, the seat lid 23 can be easily attached to and detached from the container box 22, so that the seat lid 23 can be used repeatedly.

As shown in FIG. 12A, there is a commercially available container box 22 having a guide wall 22g in which the tip of an upper flange 22a extends downward. The guide wall 22g increases the flange strength and eases the contact of the handle.
Modification 5 employs a locking frame 29 for fixing the sheet lid 23 to such a type of container box 22. The locking frame 29 is connected to the guide wall 22g so as to be folded downward from the distal end of the peripheral portion 23a of the sheet lid 23, and the distal end extends to the inside of the lower end of the guide wall 22g. When attaching the sheet lid 23 to the container box 22, the frame groove T of the locking frame 29 is deformed so as to be widened and hooked on the guide wall 22g.
According to such a configuration, the sheet lid 23 can be easily fixed to the container box 22 of the type having the guide wall 22g at the tip of the upper flange 22a. Since the mounting hole H is not required in the upper flange 22a of the container box 22, the mechanical strength of the upper flange 22a can be easily secured.

As another embodiment of the seat lid 23, the position of the half cut groove may be changed or added. Modification Example 6 shown in FIG. 12B is one in which a second half-cut groove M <b> 2 is added to the center of the sheet lid 23. The half-cut groove M2 is disposed at an intermediate position avoiding the nest portion 23b of the sheet surface, and penetrates linearly substantially below the sheet surface substantially parallel to the half-cut groove M.
According to the configuration of Modification 6, the sheet lid 23 can be bent by the half-cut groove M2 in addition to the half-cut groove M. Since the broken lines formed by the grooves of the seat cover 23 become hinges, the container box 22 can be fully opened or partially opened. By changing the position and the number of the half-cut grooves in this manner, the way of opening the container box 22 can be switched according to the application.

As another embodiment of the sheet lid 23, a perforated cut groove may be adopted instead of the half cut groove.
The perforated cut groove is formed by cutting the sheet surface of the sheet lid in a broken line shape, and is formed in the same position as the half-cut grooves M and M2 in a linear direction on the sheet surface of the peripheral portion of the sheet lid (lid main body) 23. It is provided along. Cut holes penetrating the sheet surface are arranged at predetermined intervals in a straight line direction. The perforated cut groove divides the sheet lid 23 into a fixed piece 23X on the locking projection 25 side and a movable piece 23Y on the opposite side to the locking projection 25.
Such perforated cut grooves can of course be employed not only in the above-described seat lid having the locking projections, but also in the seat lid having the locking frame.

In such an embodiment, the movable piece 23Y of the sheet lid 23 that covers the upper opening of the container box 22 is opened by bending the sheet lid 23 by the perforated cut groove. That is, the broken line portion of the sheet lid 23 formed by the perforated cut groove functions as a hinge. Thereby, the seat lid 23 can be easily opened and closed.
Further, when the sheet lid 23 is not bent by the perforated cut groove, since a broken line portion (hinge) does not occur in the sheet lid 23, the fixed piece 23X and the movable piece 23Y of the sheet lid 23 are connected in the plane direction. Is kept. For this reason, the movable piece 23Y of the seat lid 23 is prevented from being unexpectedly opened due to being blown by the wind or the like, and the hermeticity can be secured.

  In addition, the position and the number of the locking projections 25 may be appropriately changed according to the container use.

20, container with lid 22, container box 22a, upper flange 22b, lower flange 22c, box body 22d, leg, 22e, hole edge, 22f, squaring portion 22g, guide wall 23・ Seat lid (lid main body) 23a ・ ・ Peripheral part 23b ・ ・ Nesting part 23X ・ ・ Fixed piece 23Y ・ ・ Movable piece 25 ・ ・ Locking projection 25a ・ ・ Rising part 25b ・ ・ Locking part 25c ・ ・ Groove 25d ・・ Ribs 28, 29 ・ ・ Holding frame H ・ ・ Mounting hole K ・ ・ Return M ・ ・ Half cut groove (perforated cut groove)
N · · · escape hole S · · · hollow space T · · · frame groove

Claims (7)

A peripheral portion (23a) of a sheet lid (23) made of a flexible material is placed on the upper flange (22a) of the container box (22), and is formed so as to be surrounded by the peripheral portion of the sheet lid. A nested portion (23b) fitted into the upper surface opening of the container box, the container with a lid,

A mounting hole (H) provided in an upper flange of the container box,
A locking projection (25) integrally formed downward on the periphery of the seat lid;
A fixed piece (23X) on the locking projection side and a movable piece (23Y) on the opposite side to the locking projection are provided so as to penetrate the lower surface of the peripheral portion of the sheet lid in a linear direction. And a half-cut groove (M) for partitioning

When the peripheral edge of the sheet lid is placed on the upper flange of the container box, the locking projection of the sheet lid fits into the mounting hole of the container box, whereby the sheet lid is fixed to the container box. While
When the sheet lid is bent by the half-cut groove in a state where the sheet lid is fixed to the container box, a movable portion of the sheet lid is fixed to the seat lid by bending the broken line portion into a hinge. A lidded container configured to leave pieces on the upper flange side of the container box and open above the container box. It is a container with a lid of Claim 1, Comprising:
Said mounting hole (H) which is drawn out in a long hole shape along the upper flange (22a) of said container box (22);
A hollow projection formed so that a seat surface of a peripheral portion (23a) of the seat cover (23) swells downward, and having a locking portion (25b) formed in a ship bottom shape at a tip end side thereof. A locking projection (25);
A pair of barbs (K) provided at both longitudinal ends of the locking portion of the locking projection,
When the locking projection fits into the mounting hole, the locking projection is elastically deformed, so that the pair of barbs are locked to hole edges (22a) at both ends in the longitudinal direction of the mounting hole. Container with lid. It is a container with a lid of Claim 2, Comprising:
A groove (25C) continuous with the outer peripheral surface of the locking projection in the projection height direction;
A lid-equipped container comprising: an inner peripheral surface of the locking projection; A peripheral portion (23a) of a sheet-like lid body (23) made of a flexible material is placed on an upper flange (22a) of the container box (22), and is surrounded by the peripheral portion of the lid body so as to be recessed. A container lid configured such that the nested portion (23b) formed as described above fits into an upper surface opening of the container box,

A locking projection (25) integrally formed downward on the periphery of the lid body;
A fixing piece (23X) provided on the lower side of the peripheral portion of the lid main body in a linear direction, and the lid main body is provided on the locking projection side and a movable piece (23Y) on the opposite side to the locking projection. And a half-cut groove (M) for partitioning

When the peripheral portion of the lid body is placed on the upper flange of the container box, the locking projection of the lid body fits into a mounting hole (H) provided in the upper flange of the container box, whereby While the lid body is fixed to the container box,
When the lid body is bent by the half-cut groove in a state where the lid body is fixed to the container box, the broken line portion becomes a hinge, so that the movable piece of the lid body fixes the lid body. A container lid configured to leave pieces on the upper flange side of the container box and open above the container box. A peripheral portion (23a) of a sheet-like lid body (23) made of a flexible material is placed on an upper flange (22a) of the container box (22), and is surrounded by the peripheral portion of the lid body so as to be recessed. A container lid configured such that the nested portion (23b) formed as described above fits into an upper surface opening of the container box,

A locking frame (28) integrally formed so as to be folded downward on the periphery of the lid main body;
The lid body is provided so as to penetrate the lower surface of the peripheral portion in a linear direction, and the lid body is fixed to the locking frame side (23X) and the movable piece (23Y) opposite to the locking frame. And a half-cut groove (M) for partitioning

When the peripheral edge of the lid body is placed on the upper flange of the container box, the locking frame of the lid body fits into the tip of the upper flange of the container box, so that the lid body is inserted into the container box. Is fixed,
When the lid body is bent by the half-cut groove in a state where the lid body is fixed to the container box, the broken line portion becomes a hinge, so that the movable piece of the lid body fixes the lid body. A container lid configured to leave pieces on the upper flange side of the container box and open above the container box. The container lid according to claim 4, wherein
Instead of the half-cut groove (M), the cover body (23) is provided along a linear direction on a sheet surface at a peripheral portion of the lid body, and the lid body (23) is fixed to the fixing piece (23X) on the locking projection side. A container lid having a perforated cut groove for partitioning the locking projection and the movable piece (23Y) on the opposite side. It is a container lid of Claim 5, Comprising:
Instead of the half-cut groove (M), the cover body (23) is provided along a linear direction on a sheet surface of a peripheral portion of the lid main body, and the lid main body (23) is fixed to the fixing piece (23X) on the locking frame side; A container lid including a perforated cut groove for partitioning the locking frame and the movable piece (23Y) on the opposite side.

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