JPH09202343A - Synthetic resin molding with elastically tumbling cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a synthetic resin molding with an excellently elastically tumbling cover in which the elastic plate is not exposed to the outside on closing the cover, and a superfluous recess for the tumbling structure on the body and the cover body of the cap body and the container body is not required, and a favorable appearance is given and further, conventional tumbling of the cover body can be done. SOLUTION: The lower end of the rear part of a cover body 3 is connected to the upper end of the rear part of the body 2 through the first hinge 15. A pair of elastic plates 16 bent forward respectively to form an arcuate shape, are provided at both sides of the first hinge 15 and in the cover body 3. Respective lower ends of elastic plates are connected to the rear lower ends of the peripheral wall of the cover body through respective second hinges 17. Further, respective upper ends of the elastic plates are connected to the front end of projection 8 protruded from the rear upper end of the extraction cylinder 6 positioned at the upper part of respective second hinges through respective third hinges 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin molded article with an elastically inverting lid, and more particularly, to a cap or container with an elastically inverting lid, which is excellent in that the elastic inverting mechanism is not exposed to the outside. The present invention relates to caps and containers that have an appearance.

[0002]

2. Description of the Related Art Conventionally, as a synthetic resin molded product having an elastically inverting lid, a cap having an elastically inverting lid, a container having an elastically inverting lid, and the like have been used. A so-called three-point hinge mechanism is known as an elastic reversing mechanism in these caps and containers. The mechanism includes a rear upper end of the main body,
The rear lower end of the lid body is appropriately spaced from each other to form a pair of left and right first
In addition to connecting with a hinge, the lower end of the inverted L-shaped elastic plate provided between the first hinges is connected to the rear part of the body below the first hinge via the second hinge, and the other end of the elastic plate is The third hinge is connected to the upper surface of the lid in front of the first hinge via the third hinge.

[0003]

In the above-mentioned three-point hinge mechanism, the lid is automatically opened when the lid is opened up to a predetermined angle from the closed state, and the lid is automatically closed when the lid is closed up to the predetermined angle. Although there is an advantage that the lid can be easily opened and closed and the operation can be performed with a touch, the elastic plate is largely exposed to the outer surface, which has the drawback of impairing the appearance, and there is room for improvement in this respect. In consideration of these points, the present invention allows the lid body to be inverted as in the conventional case, and when the lid is closed, the elastic plate is not exposed to the outer surface at all, and moreover, the body and the lid body such as the cap body or the container body are not exposed. It is an object of the present invention to propose an excellent synthetic resin molded product that does not need to be provided with an extra recess or the like to provide a reversing mechanism and has a good appearance.

[0004]

In order to solve the above-mentioned problems, the molded article according to the first aspect of the present invention comprises a main body 2 in which a lower end is opened in the central portion of the top wall 5 and a pouring cylinder 6 is provided upright. The main body top wall 5
A peripheral wall 11 having a lower surface abuttingly mounted on a peripheral edge of an upper surface, and a lid body 3 having a top wall 12 extending from the upper edge of the peripheral wall and covering the spout cylinder 6 are provided. The lower end of the rear portion of the lid 3 is connected via 15 and a pair of elastic plates 16, 16 are provided on both sides of the first hinge 15 and curved forward in the lid 3, respectively. 16 The lower end is connected to the rear lower end of the peripheral wall of the lid through the second hinges 17 and 17, respectively,
The upper ends of the elastic plates 16 and 16 are connected to the tips of the projections 8 projecting from the upper ends of the rear portions of the pouring tubes 6 located above the second hinges 17 and 17 via the third hinges 18 and 18, respectively. It is configured as a synthetic resin molded product with a lid body that is elastically inverted.

According to a second aspect of the present invention, in the body 2, the main body 2 extends the top wall 5 from the upper edge of the peripheral wall 4, and the lower end is opened at the central portion of the top wall 5 so that the pouring cylinder 6 stands up. The synthetic resin molded article according to claim 1, which is the cap body 2a provided. According to a third aspect of the present invention, in the molded article, the main body 2 stands up the mouth and neck from the upper end of the tubular body, and the lower end is opened at the center of the top wall that covers the upper surface of the mouth and neck to stand up the pouring tube. The synthetic resin molded article according to claim 1, which is a container body provided.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. As shown in the drawings, a synthetic resin molded product 1 of the present invention includes a main body 2 and a lid 3. Also,
An elastic reversing mechanism A for elastically reversibly connecting the lid to the main body is provided.

The main body 2 may be any one as long as a pouring cylinder is erected with its lower end opened at the center of the top wall. For example, the cap main body is used as a cap to be attached to the mouth of a bottle. Alternatively, a container body or the like when used as a container as it is.

The embodiment shown in FIG. 1 to FIG.
Is a cap body 2a, and the synthetic resin molded product 1 as a whole is a cap 1a with a lid body that is elastically inverted. The whole is configured as an integrally molded product of synthetic resin.

The cap body 2a has a top wall 5 extending from the upper edge of the peripheral wall 4 and an opening at the lower end at the center of the top wall 5 and a spout 6
Is set up. A flange 7 is extended outward at the upper end of the spout cylinder 6, and a pair of projecting portions 8 are provided at a predetermined distance rearward from the upper end of the rear portion. An annular recess 9 is formed by denting the peripheral portion of the top wall 5 downward, and the rear portion of the recess 9 is a wide portion extending from the peripheral edge of the top wall to the rear end of the spout tube 6.
Formed in 9a. A locking projection 10 is provided on the upper end of the vertical wall surface of the recess 9.

The lid 3 is constructed by extending a top wall 12 that covers the upper surface of the spout cylinder 6 from the upper edge of the peripheral wall 11 whose lower surface abuts on the peripheral portion of the upper surface of the main body top wall 5. In the present embodiment, the lower end of the peripheral wall 11 is fitted into the recess 9 so as to be openable and closable, and the locking projection 10 is formed.
It is locked so that there is no rattling. Also, the surrounding wall
11 A finger hooking projection 13 is provided on the lower end of the front part, and a seal tube 14 that fits into the spout tube 6 in a liquid-tight manner is vertically provided at the center of the back surface of the top wall 12.

As the elastic reversing mechanism A, the lower end of the lid rear part is connected to the upper end of the rear part of the main body 2 through the first hinge 15, and both sides of the first hinge 15 and inside the lid 3 are respectively forward. A pair of elastic plates 16 and 16 curved in a circular arc shape are provided, and the lower ends of the elastic plates are connected to the lower ends of the rear part of the lid peripheral wall 11 via the second hinges 17 and 17, respectively, and the upper ends of the elastic plates are set to the second ends. The third hinge 1 is provided at the tip of each of the projecting portions 8 and 8 projecting from the upper end of the rear portion of the pouring tube 6 located above the hinges 17 and 17.
It is connected via 8 and 18.

As described above, each elastic plate 16, 16 is formed in the shape of an arc plate whose central portion in the vertical direction protrudes forward so that it can be easily deformed by compression when the lid is opened and closed, and when the lid is opened. In order to make the lid opening angle as large as possible, the second hinge 17 at the lower end and the third hinge 18 at the upper end are arranged on a substantially vertical line. Therefore, when the lid is closed, as shown in FIG. Thus, only the first hinge 15 is exposed to the outside, and the elastic plate 16
The second and third hinge portions 17 and 18 are configured so as not to be seen from the outside.

The cap 1a constructed as described above has the second hinge 17 when the lid 3 is opened from the closed state shown by the solid line in FIG.
Rotates from the point A about the first hinge 15 in the arrow direction.
Since the lid 3 is in a stable state in which no external force is applied when the second hinge 17 of the elastic plate 16 is at the point A, the distance from the third hinge 18 is the same as shown by the chain double-dashed line in FIG. At a certain point B, the stable state is reached again. Further, between the points A and B, the elastic plate 16 is in an elastically deformed state by being compressed from both ends, and therefore, the elastic restoring force of the elastic plate 16 exerts a force in the opening / closing direction on the lid 3. The action of the force of the lid 3 is the elastic plate 16
Changes at the midpoint C between A and B where the maximum deformation occurs, and the force in the opening direction between C and B where the second hinge 17 passes this point and in the closing direction between the other A and C is the lid body. Work to three.

As an example of the case where the main body 2 is a container body, for example, although not shown, the mouth and neck is erected from the upper end of the tubular body, and the central portion of the top wall that closes the upper neck and mouth opening is closed. An example is one in which a pouring cylinder is erected with the lower end opened. Also in this case, the lid and the elastic reversing mechanism have the same configuration as that of the cap body. In this case, since it is relatively difficult to integrally mold the container body and the lid body, the container body is formed with the body bottom portion separately, and the container body other than the bottom portion and the lid body are integrated with the elastic reversing mechanism. Formed into
After molding, the bottom may be fixed by a fixing means such as adhesion or fusion.

[0015]

As described above, in the synthetic resin molded product of the present invention, the lower end of the rear portion of the lid is connected to the upper end of the rear portion of the main body through the first hinge, and both sides of the first hinge and the front portion of the lid body are respectively forwarded. A pair of elastic plates curved in a circular arc shape are provided, the lower ends of the elastic plates are connected to the lower ends of the rear peripheral wall of the lid body via the second hinges, and the upper ends of the elastic plates are located above the second hinges. Since the ends of the protrusions projecting from the upper end of the rear part are connected via the third hinges respectively, the elastic plate can be housed in the lid without being exposed to the outside when the lid is closed. It is not necessary to form an extra concave portion on the outer surface of the lid body and the container body, and only the very slight protrusion of the first hinge portion is exposed, and the appearance is very good as compared with a conventional molded product of this type, Moreover, when opening and closing the lid, it is the same as the conventional product. With the ability can be exhibited, and as it can exhibit excellent effects such that no disadvantages significantly narrows such angle lid opening.

[Brief description of drawings]

FIG. 1 is a half cross-sectional view of an embodiment of the container of the present invention in an open state.

FIG. 2 is a plan view showing an opened state of the embodiment.

FIG. 3 is a perspective view showing an opened state of the embodiment.

FIG. 4 is a perspective view showing a closed state of the embodiment.

FIG. 5 is an enlarged plan view of an essential part of an elastic plate portion of the embodiment.

FIG. 6 is an enlarged view of a main part for explaining opening and closing of the lid body according to the embodiment.

[Explanation of symbols]

2 ... Main body, 2a ... Cap main body, 3 ... Lid body, 4 ... Peripheral wall, 5
… Top wall, 6… Pour out cylinder, 8, 8a… Projection part, 11… Perimeter wall, 12…
Top wall, 15 ... First hinge, 16 ... Elastic plate, 17 ... Second hinge,
18th third hinge

Claims (3)

[Claims] 1. A spout cylinder 6 having a lower end opened at the center of the top wall 5.
A lid body formed by vertically extending a main body 2 and a peripheral wall 11 having a lower surface abuttingly mounted on a peripheral portion of an upper surface of the main body top wall 5 and a top wall 12 extending from an upper edge of the peripheral wall 11 to cover the spout cylinder 6. 3 and the main body 2
The rear lower end of the lid body 3 is connected to the upper rear end through the first hinge 15, and a pair of elastic plates 16 and 16 which are curved forward in an arc shape on both sides of the first hinge 15 and inside the lid body 3 are provided. Provide the elastic plates 16 and 16 lower ends to the rear lower end of the peripheral wall of the lid body respectively
The elastic plates 16, 17 are connected to each other via the hinges 17, 17.
Each of the third hinges is attached to the tip of the protruding portion 8 projecting from the upper end of the rear portion of the pouring tube 6 whose upper end is located above the respective second hinges 17 and 17.
A synthetic resin molded product with an elastically inverting lid, characterized by being connected via 18, 18. 2. The main body 2 comprises a top wall 5 and a top wall 5 from the upper edge of the peripheral wall 4.
2. The synthetic resin molded product according to claim 1, which is a cap main body 2a in which the lower end is opened and the spout cylinder 6 is provided upright in the central portion of the top wall 5 while extending. 3. A container body in which the main body 2 has a mouth and neck standing upright from the upper end of the tubular body, and a lower end is opened at the center of the top wall that covers the upper surface of the mouth and neck, and a pouring cylinder is provided upright. The synthetic resin molded article according to claim 1.