JP2000238817A - Synthetic resin container with lid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably keep a lid closed by including a first lock where an upper external surface of a container body is engaged with an inward protrusion protruding from a lid and including a second lock comprising lock plates provided at both side ends of one of lids and stopper pieces provided at both ends of the other lid. SOLUTION: A horizontal flange 35 is provided on an external surface at an upper end of a side wall 23b of a container body, and a protrusion 47 is formed on an internal surface of an outer wall of a lid 22a, constituting a first lock of the protrusion 47 and the flange 35. In addition, notches 48, 48a are formed by notching an upper tip of an upper wall 45a and an outer wall 45c which constitute a fitting groove 45, and a horizontal stage 51 is provided there. Further, a lock plate 53 is fixed to the stage 51 on a side of a lid 22a. On the other hand, on a side of a lid 22b, a stopper piece 55 is provided on the notch 48a by extending parts of the upper wall 45a and the outer wall 45c, constituting, together with the lock 53, a second lock. This constitution, which has two locks, can reliably keep the lid closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin container provided with a lid having a peripheral side wall and a lid, and more particularly, to a lock structure of a lid connected to the upper end of the peripheral side wall.

[0002]

2. Description of the Related Art Conventionally, when transporting and selling soy sauce, soft drinks, chemicals, seasonings, etc., these liquids are filled in a synthetic resin sealed bag, and the sealed bag is stored in a cardboard box or the like.
2. Description of the Related Art A container for selling liquid, which is a so-called bag-in-box in which a spout port is attached to the closed bag, is widely used. Such a bag-in-box is widely used as a container for transporting a liquid as described above because of a reduction in transportation cost and an easy handling of the container. A conventional bag-in-box is filled with a liquid in a cardboard box or the like, and accommodates a synthetic resin bag to which an extraction port plug is attached. A cock is attached to a spout formed in the resin bag, and the cock is opened and closed by pouring.

In these bag-in-boxes, a box-shaped synthetic resin container with a lid is used in addition to a cardboard box. As shown in FIG. 9 and FIG. 10, an example of such a box-type synthetic resin box with a lid is that a lid 2a and a lid 2b each having a size divided into two at the upper end of the side wall of the container body 1 are each hinged. 3 so as to be freely rotatable. The container body 1 has a bottom wall 5 formed at a lower portion of a side wall 4 inclined outward toward an upper opening, and an upper end portion of the side wall 4 is provided with a downwardly directed flange 7 on a horizontal peripheral edge 6 so as to have a substantially rectangular cross section. A character-shaped fitting portion 8 is formed. By forming the upper portion of the side wall with the U-shaped fitting portion 8 in this manner, a robust structure can be obtained.

On the other hand, the fitting portion 8 of the lid 2a and the lid 2b
A vertical peripheral edge 9 is provided at an edge of a joint surface to be joined with the cover 2a, and a lock portion 11 is formed by a protrusion 10 projecting inward at a lower end of the peripheral edge 9 near the joint surface between the 2a and the lid 2b. Become. In order to fit the lid 2a and the lid 2b to the container body 1, the fitting portion 8 is inserted into the peripheral edge 9 while rotating the lid 2a and the lid 2b around the hinge 3, respectively, and the downward flange 7 The inward projections 10 may be engaged with the lower surface of the base. The lid 2 a and the lid 2 b are locked to the main body 1 by locking the projection 10 to the downward flange 7.

FIG. 11 shows another example of the lock structure between the container body and the lid. A lower flange 12 and an upper flange 13 are provided at the upper end of the container body 1 to form a fitting portion 14. . On the other hand, the lid 2c connects the lid plate 15 to the inner frame interruption of the downwardly facing U-shaped
The locking portion 18 is formed by a projection 17 projecting inward from the outer frame of
Is formed. To fit the lid 2c to the container body 1,
The cover 2c may be pressed to insert the fitting portion 14 into the fitting frame 16, and the inward projection 17 may be locked on the lower surface of the lower flange 12. Inward projection 17 on lower flange 12
Is locked, the lid 2c is locked to the container body 1.

[0006]

The lock structure between the container body and the lid as described above has the following problems. That is, in the lock structure as shown in FIG.
When the lid is closed, it must be strongly pressed at the lock portion, and when the lid is opened, the finger is not easily caught and it is difficult to open. Further, if the inward projection 10 forming the lock portion 11 is damaged or the elastic force is reduced, the lock function cannot be performed. In the lock structure shown in FIG. 11 as well, the protrusion 17 projects downward from the lower end of the outer frame as compared with the structure of FIG. . Further, in any of the above cases, since the lock portion is provided only at one place, the lock state may be released by an impact such as a drop. In order to prevent the lock from being released by an impact such as a drop, the inward projections 10 and 11 may be enlarged. However, if the inward projection is enlarged, it becomes difficult to close or open the lid.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and can be easily fitted when the lid is closed, and can be easily opened when the lid is opened. An object of the present invention is to provide a synthetic resin container with a lid that can securely lock the lid in the state.

[0008]

The present invention has the following configuration to achieve the above object. That is, the synthetic resin container with a lid according to the present invention is a synthetic resin container comprising a container main body and a lid divided into two parts, wherein the lid is rotatably attached to the upper portion of the opposing side wall of the container main body. A first lock portion in which an upper outer surface of the container main body and an inward projection protruding from the lid engage with each other; a side edge of one of the lids being parallel to a side edge and being free to fall inward and outward; A lock plate whose portion protrudes from the abutting surface, and a notch formed on each side end of the other lid to form a gap for inserting the tip of the lock plate and a stopper piece for locking the inserted lock plate. And a second lock portion. The second lock portion is formed by connecting a part of a lower end portion by inclining upward to a cutout portion provided on both side ends of a lid and connecting a part of a lower end portion, and projecting a front end portion from a butt surface, Notch portions are provided at both side ends of the other lid, and stopper pieces for locking the lock plate are formed inside the upper surface of the notch portion so as to have a gap for inserting the lock plate in an upright state. May be.

Further, the synthetic resin container with a lid according to the present invention comprises a flat rectangular container body and a lid divided into two parts, and the lid is rotatably mounted on the upper part of the opposed side wall of the container body. In the synthetic resin container, a first lock portion in which an upper outer surface of the container body and an inward projection protruding from the lid are engaged, a lock piece provided on an upper side surface of the container body, and a rib provided on the lid. A second lock portion adapted to be engaged with the lock piece. The lock piece is approximately V
It may be formed so that the upper end is free, the lower end is fixed to the container body, and the tip of the lock piece engages with a rib provided on the lid.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated embodiment will be described below in detail. 1 and 2 are top perspective views of the first embodiment. FIG. 1 is a perspective view with a lid closed, and FIG. 2 is a perspective view with one lid open. The container 20 with a lid includes a planar rectangular container main body 21 and lids 22a and 22b divided into two parts. The container body 20 has a bottom wall formed at the lower part of the side wall 23 inclined outward toward the upper opening, and a horizontal flange 25 is provided at the upper end of the opposing side wall 23a with a downward flange 27 so as to have a substantially rectangular cross section. The edge frame 29 is formed in the shape of a letter. By forming the upper portion of the side wall in a U-shape in this manner, a robust structure can be obtained. Further, a notch 30 is provided in the edge frame 29, and a shaft 31 constituting a hinge is formed in the notch 30 horizontally.

Further, a concave portion 33 is formed in a vertical direction substantially at the center of a pair of side walls 23b adjacent to the side wall 23a of the container body 21. A horizontal flange 35 is provided on the outer surface of the upper end of the side wall 23b at substantially the same height as the lower surface of the downward flange 27, and the recess 33
On the outer side, a rib 37 is provided lower than the peripheral edge 25 and is connected to the edge frame 29. Therefore, in the range of the concave portion 33, the rib 37 is notched and is recessed to the flange 35, and the flange 35 and the rib 37 serve as a fitting portion 39 for the lids 22a and 22b. 40 parts of one lock are constituted. The side wall 23
In the configuration at the top of b, the configuration of the fitting portion 39 is not necessarily limited to the above-described embodiment, and may be formed, for example, in a U-shaped cross section that opens downward like the edge frame 29. In this case, the lower end surface of the outer side wall is the first lock 40.
Make up the part.

On the other hand, the lids 22a and 22b are provided with a substantially semicircular holder 41 for inserting the shaft 31 protruding from a side end of the lid plate 43, and the fitting portions 39 are fitted on adjacent two sides. And the first lock 40 is formed.
And a second locking portion 49 is provided on the side edge of the facing surface of the lids 22a and 22b.
Is formed. By inserting the shaft 31 through the substantially semi-circular holder 41, a hinge structure is formed. The lids 22a and 22b are rotatable about the shaft 31, and can be opened and closed like a double door. The fitting groove 45 is provided on the cover plate 4.
3, an inner wall 45a, an upper wall 45b extending horizontally from the inner wall 45a, and an outer wall 45c extending downward from the upper wall 45b. So that it locks on the underside,
A projection 47 is formed on the inner surface of the outer wall. The projection 47 constitutes the first lock portion 40 together with the flange 35.

In addition, a lid 22 is provided above the recess 33.
A collision prevention plate 50 is provided between the first and second lock portions 40a and 22b to prevent a finger from being accidentally released due to a collision or the like. The collision prevention plate 50 protrudes from the side plate 23b and is provided so as to straddle the concave portion 33.
Collision with the lower surface of the outer wall 45c of the 2a, 22b is prevented. On the other hand, when opening the lids 22a and 22b,
The outer wall 45c is pushed outward by inserting a finger between the projection 47 and the projection 35 and the flange 35 to release the engagement state.

Next, the structure of the second lock portion 49 will be described. The upper end portions of the upper wall 45a and the outer wall 45c of the fitting groove 45 are cut out to form notches 48, 48a.
Are formed, and a horizontal step board 51 is provided in each of the cutouts 48 and 48a. Further, the step board 51 is provided on the side of the lid 22a.
Is fixed to the lock plate 53. The upper end of the lock plate 53 is inclined outward so that the lower end is connected to the inner wall 45a and the upper end is close to the corner between the upper wall 45b and the outer wall 45c. A part of a lower end portion of the lock plate 53 is connected to the step plate 51, and a tip end protrudes from an end surface of the lid plate 43. Therefore, the lock plate 53 is provided with a spring action so as to rise vertically by being pressed horizontally from the outside and to return to the original state when the pressure is released.

On the other hand, the notch 48
a, a stopper piece 55 is provided by extending a part of the upper wall 45a and a part of the outer wall 45c. A gap 57 is provided between the distal end of the stopper piece 55 and the inner wall 45a so that the distal end of the lock plate 53 is inserted upright. That is, the gap 57 is large enough to insert the lower end of the lock plate 53, and the stopper piece 55 is formed to lock the upper end of the lock plate 53. Therefore, when the lid 22a is rotated and abutted against the lid 22b, first, the lower end portion of the protruding portion of the lock plate 53 is
When the lid 22a is further pressed down, the inclined side surface of the lock plate 53 comes into contact with the tip of the stopper piece 55 and is inserted while gradually rising. When the entirety of the lock plate 53 is inserted into the cutout portion 48a, the lock plate 53 returns outward by the action of a spring and is locked on the lower surface of the stopper piece 55 (see FIGS. 3 and 4).

The lock plate 53 is locked with the stopper piece 55 to be in a locked state, and the lids 22a and 22b are integrally connected. Therefore, the first lock portion 4
Even when 0 is released or broken, the lid is kept closed by the second lock portion 49. Conversely,
Even when the second lock 49 is released or broken, the first lock keeps the lid closed. As described above, in the present invention, since two lock portions are provided,
Even when one of the lock portions cannot perform the locking action, the closed state can be reliably maintained.

Next, a second embodiment of the second lock portion will be described with reference to FIGS. On the side wall 23b of the container body 21, a V-shaped lock piece 61 is provided in a cutout portion 60 formed by cutting out the flange 35 at a substantially central portion of the concave portion 33. The V-shaped lock piece 61 includes:
The lower end 65 of the hook 63 is integrally fixed to the side wall 23b. The upper portion of the hook 63 is free and protrudes above the flange 35 and is disposed in the cutout portion 60. Therefore, the hooks 63 approach each other when pressed so as to be sandwiched from both sides, and return to the original state by a spring action when the pressing is released.

On the other hand, on the side of the lids 22a and 22b, the fitting groove 45 on the side surface is extended to the mating surface without notching, and the tip of the hook 63 is engaged between the inner wall 45a and the outer wall 45c. A locking rib 67 for stopping is provided.
The V-shaped lock piece 61 and the locking rib 67 provide a second
Construct a lock unit. In this embodiment, the lid 22
Since a and 22b have the same configuration, they can be closed at the same time. That is, when the lids 22a and 22b are lowered, the locking rib 67 hits the tip of the hook 63, and when the lid is further lowered, the locking rib 67 is closed so that the tips of the hooks approach each other. At the same time as the fitting portion 39 is fitted to the hook 63, the hook 63 is returned by a spring action, and the rib 67 and the tip end of the hook 63 are locked together by locking. The V-shaped lock piece 6
1 is a shape formed integrally and continuously, but may be a shape formed by dividing into an inverted C shape.

A method for using the synthetic resin container with a lid according to the above embodiment will be described. In the first embodiment, when closing the lid, the lid is rotated around the shaft 31,
First, the lid 22b is lowered to fit the fitting portion 39 into the fitting groove 45. By fitting the fitting portion 39 and the fitting groove 45, the projection 47 is locked on the lower surface of the flange 35, and the first lock portion on the lid 22b side acts. Next, when the lid 22a is lowered, the lid 22b is abutted against the lid 22b. First, the lower end of the protruding portion of the lock plate 53 is inserted into the gap 57, and the side surface of the lock plate 53 contacts the tip of the stopper piece 55. It is inserted by standing up gradually while touching. When the upper end of the lock plate 53 is inserted into the notch portion 48a, the lock plate 53 returns outward by a spring action.
It is engaged with the lower surface of the stopper piece 55. In this manner, the second lock 49 locks the lid 22a and the lid 22b integrally. At the same time, also in the lid 22a, the fitting portion 39 is fitted into the fitting groove 45, so that the projection 47 is locked to the flange 35 and fixed to the container body 21.
The locking part works.

When the cover is opened, the lock plate 53 is pressed inward to position the upper end portion in the gap 57, and then the portion of the outer wall 45c of the cover 22a, which is provided with the projection 47, is pushed outward. It is sufficient to open the lid 35a to release the locked state between the flange 35 and the projection 47 and push up the lid 22a. After that, the portion of the outer wall 45c where the protrusion 47 is protruded on the side of the lid 22b is pushed outward to spread the flange 35 and the protrusion 47.
Is released, and the lid 22b may be pushed up as it is.

On the other hand, in the second embodiment, the lid 22
What is necessary is just to drop a and 22b simultaneously or from any one, and to press on the container main body 21. When the rib 67 abuts on the distal end of the hook 63, it is bent inward by the rib 67.
3 returns to lock integrally with the rib 67. At the same time that the tip of the hook and the rib 67 are locked to actuate the second lock, the fitting portion 39 is fitted into the fitting groove 45 so that the projection 47 is locked to the flange 35 and the container body 21 is locked. Lid 2
2a and 22b are fixed, and the first lock portion operates.

When the lid is opened, the V-shaped lock piece 61 is sandwiched, or one of the outer walls 45c of one of the lids 22a and 22b is pressed while pressing one side to release the engagement between the rib 67 and the hook 63. Then, the portion formed by projecting the projection 47 is pushed outward to release the locked state between the flange 35 and the projection 47, and the lid 22a or 22b may be pushed up as it is.

[0023]

According to the present invention, since the synthetic resin container with the lid has two lock portions, the lid can be securely held in the closed state, and the lid is released even if it receives an impact such as a drop, so that the lid is released. Can never be opened. In addition, lock part 2
With this arrangement, even if one of them is broken or the elastic force is lost and the locking action cannot be performed, the lid can be kept in a sufficiently closed state. On the other hand, when the lid is opened, it can be opened by a simple operation, which is advantageous as a container such as a bag-in-box.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a lid is closed.

FIG. 2 is a perspective view showing a state where one lid is opened.

FIG. 3 is a perspective view of a main part showing a configuration of a lock unit.

FIG. 4 is a sectional view of a main part of the lock unit.

FIG. 5 is a sectional view of a main part showing a hinge structure of a mounting portion of the lid.

FIG. 6 is an explanatory diagram of a state in which a lid is closed.

FIG. 7 is a perspective view of a main part showing a configuration of a lock unit according to a second embodiment.

FIG. 8 is an explanatory view in which a part of a state in which the lid is closed is cut away.

FIG. 9 is a perspective view showing a conventional bag-in-box.

FIG. 10 is a sectional view of the same.

FIG. 11 is a cross-sectional view of a main part of another conventional example showing the fitting between the lid and the container body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 20 Container with a lid 21 Container main body 22a, 22b Lid 23, 23a, 23b Side wall 25 Peripheral edge 27 Flange 29 Edge frame 30 Notch 31 Shaft 33 Depression 35a Lower flange 35 Flange 37 Rib 39 Fitting part 40 First lock part 41 Holder 43 Lid plate 45 Fitting groove 45a Inner wall 45b Upper wall 45c Outer wall 47 Projection 49 Second lock portion 50 Collision prevention plate 51 Step plate 53 Lock plate 53a Lock plate tip 55 Stopper piece 57 Gap 60 Notch 61 V-shaped lock piece 63 Hook 65 Lower end 67 Rib

 ──────────────────────────────────────────────────の Continued on the front page F term (reference) 3E084 AA05 AA14 AA24 BA03 BA05 CA03 CC03 DA03 DB14 FA06 FD01 GA06 GB06 GB13 GB26 LG10

Claims (4)

[Claims] 1. A synthetic resin container comprising a container main body and a lid divided into two parts, wherein the lid is rotatably attached to an upper portion of an opposing side wall of the container main body. A first lock portion to which the provided inward projection is engaged, and both ends of one of the lids are parallel to side edges and can be turned up and down in the inward and outward directions, and the front end protrudes from the abutting surface. A lock plate, and a second lock portion formed on both sides of the other lid, including a gap for inserting a tip portion of the lock plate and a cutout portion formed with a stopper piece for locking the inserted lock plate. A synthetic resin container with a lid. 2. The second lock portion has a lock plate fixed to a notch provided on both side ends of a lid by inclining upward to a part of a lower end portion and projecting a front end portion from an abutting surface. Notch portions are provided on both side ends of the other lid, and stopper pieces for locking the lock plate are formed inside the upper surface of the notch portion so as to have a gap for inserting the lock plate in an upright state. The synthetic resin container with a lid according to claim 1, characterized in that: 3. A synthetic resin container comprising a flat rectangular container main body and a lid divided into two parts, wherein the lid is rotatably attached to an upper part of an opposing side wall of the container main body. And a first lock portion in which an inward projection protruding from the lid is engaged, a lock piece provided on the upper side of the container body, and a second rib provided on the lid to engage with the lock piece. A synthetic resin container with a lid having a lock portion. 4. The lock piece is formed in a substantially V shape, the upper part is free, the lower end part is fixed to the container body, and the tip part of the lock piece engages with a rib provided on the lid. The synthetic resin container with a lid according to claim 3, wherein the container is formed.