JP3270622B2 - Elastic reversing hinge mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic inversion type hinge mechanism interposed between a cap or the like main body and a cap-like lid which can be opened and closed on the main body. Here, the cap or the like refers to a cap attached to the mouth of the container, as well as a mouth of the container closed by the lid.

[0002]

2. Description of the Related Art Conventionally, this kind is disclosed in Japanese Unexamined Utility Model Publication No.
There is a "cap with a lid that reverses elasticity" disclosed in Japanese Patent Application Laid-Open No. Hei. In this device, a thin hinge is interposed on both sides of each trailing edge between a main body such as a cap and a cap-shaped lid body which can be freely opened and closed on the main body. A series of elastic strips are placed vertically above and below the hinge, and these are integrally molded with polyethylene resin, etc., and the elastic strips are formed in a curved state when the lid is opened. When the lid is closed, it stands upright.
Thus, the lid is opened and closed about the thin hinge, and at this time, the elastic band plate is slightly extended and resilient to the lid when the lid is closed in the closing direction, and When the lid is opened, the lid is urged in the opening direction, but when it passes through the position of the thin hinge with the rotation of the lid, it extends to the maximum to exhibit the maximum elasticity. Brings elastic reversal to opening and closing of.

[0003]

However, in this case, in order to impart elasticity to the elastic strip, the elastic strip is formed into a semicircular shape, and is uniformly or almost uniformly formed over its entire length. Since it is necessary to generate elasticity, the elastic deformation of bending becomes wide-ranging from a semicircular state to a straight state, and it is not possible to apply strong elasticity if trying to obtain a light elastic reversal operation, On the other hand, if a strong elasticity is to be obtained, not only a light elastic reversal action cannot be obtained, but also elastic deformation of elongation cannot be obtained, resulting in an extremely difficult or impossible operation. Therefore,
The use must be limited. The present invention seeks to improve and develop such problems.

[0004]

In order to achieve the above object, the invention according to claim 1 is characterized in that a rear edge is provided between a main body such as a cap and a cap-like lid which is openably and closably placed on the main body. The main thin hinge is interposed, and a reversing spring plate is interposed at a side of the main thin hinge and slightly ahead of the main thin hinge. An elastic piece that rises sufficiently below the main thin hinge and an elastic piece that hangs down from the main thin hinge sufficiently above the lid at the lid are connected via an intermediate thin hinge, and the intermediate thin The hinge is formed so as to be deflected to one side above or below the main thin hinge, and one elastic piece on the deflected side has bending elasticity, and the other elastic piece on the other side has bending elasticity. It is characterized by imparting bending elasticity.

According to a second aspect of the present invention, a main thin hinge 31 is interposed between the pouring cap main body 1 and a cap-shaped lid 2 which is openably and closably mounted on the main body at the center of each rear edge. At the same time, on both sides of the main thin hinge, a reversing spring plate 32 is interposed at a position slightly forward of the main thin hinge, and these reversing spring plates are attached to the main thin hinge 31 by the pouring cap main body 1. Lower elastic piece 32 raised from lower than enough
1 and an upper elastic piece 322 that is sufficiently suspended from above the main thin hinge 31 by the lid 2 is connected via an intermediate thin hinge 323, and the intermediate thin hinge 323 is connected to the main thin hinge 31 by the main thin hinge 31. The upper elastic piece 322 has bending elasticity, and the lower elastic piece 321 has
Are provided with elasticity of bending by forward bending, and are integrally formed with the lid 2 in an open state.

[0006]

According to the first aspect of the present invention, the lid is opened and closed around the main thin hinge when opening and closing, and at this time, the reversing spring plate passes through the vicinity of the main thin hinge. At the boundary, the lid is urged in the lid closing direction, and the lid is urged in the lid opening direction. Thus, at the time of opening and closing rotation of the lid, in the reversing spring plate, a pulling force acts on the one elastic piece and the other elastic piece via the intermediate thin hinge, and the one elastic piece acts on the one elastic piece. The elastic piece undergoes bending elastic deformation in the direction in which it is warped, thereby generating bending elasticity, and the other elastic piece undergoes elastic deformation that straightens a previously formed curve. Thus, the elasticity of the bending due to the curvature increases, and the elasticity of the tension given by the elasticity of the bending increases. as a result,
The reversing spring plate makes it possible to open and close the lid lightly by the intermediate thin hinge, to reduce the range of elastic deformation of both elastic pieces and to apply a strong elasticity, and the elasticity of elongation is unnecessary. Becomes

According to the second aspect of the present invention, similarly to the first aspect, the lid 2 opens and closes about the main thin hinge 31 when opening and closing, and at this time, the two reversing spring plates 32
After passing through the vicinity of the main thin hinge, the lid 2 is urged in the closing direction to the closed lid 2 and in the opening direction to the opened lid 2. When the lid 2 is opened and closed, the lower resilient piece 321 and the upper resilient piece 32
2, a tensile force acts on each other via the intermediate thin hinge 323, and the upper elastic piece 322 undergoes a bending elastic deformation in a direction to warp it, thereby generating a bending elasticity. In addition, the lower elastic piece 321 undergoes an elastic deformation that elongates a previously formed curve, thereby increasing the bending elasticity due to the curve and increasing the tensile elasticity given by the bending elasticity. . As a result, both reversing spring plates
32, the lid 2 can be easily opened and closed by the intermediate thin hinges 323, and both upper and lower elastic pieces are provided.
It is possible to reduce the range of elastic deformation and to give a strong elasticity in the examples 321,322, and the elasticity of elongation becomes unnecessary.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment in which a cap, particularly a pouring cap, is attached to a mouth of a container of the present invention. In the figure, 1 is a pouring cap body, 2
Is a cap-shaped lid that can be opened and closed on the main body,
Reference numeral 3 denotes an elastic reversal type hinge mechanism interposed at the rear edge between the pouring cap main body and the lid, and these are appropriately formed integrally with synthetic resin. The elastic inversion type hinge mechanism 3
One main thin hinge 31 is interposed between the pouring cap main body 1 and the lid 2 at the center of each rear edge, and is positioned slightly forward of the main thin hinge on both sides of the main thin hinge. Thus, a pair of left and right reversing spring plates 32 is interposed. The reversing spring plate 32 is composed of an elastic piece 321 that is raised from below the main thin hinge 31 sufficiently in the pouring cap body 1 and the lid 2.
Elastic piece that hangs down from above the main thin hinge 31 at
And 322 via an intermediate thin hinge 323, and
The intermediate thin hinge 323 is slightly shifted upward from the main thin hinge 31 and one of the shifted sides, that is, the upper elastic piece 322 is imparted with bending elasticity.
The thickness is made slightly thicker, and the other elastic piece 321 on the other side, that is, the lower elastic piece 321 is given elasticity of bending by bending forward. The above-described integral molding with the synthetic resin is performed with the lid 2 opened, and at this time, the elastic piece 321 on the lower side is bent backward to give a bending elasticity in advance.

Next, the operation of the elastic inversion type hinge mechanism 3 will be sequentially described with reference to FIGS.

FIG. 4 shows a state in which the lid 2 is opened about 180 degrees from the closed state around the main thin hinge 31 from the closed state, and the synthetic resin is molded in this state.

When the lid 2 is rotated in the closing direction from the state shown in FIG. 4, at the beginning of the rotation, the intermediate thin hinge of the reversing spring plate 32 is rotated together with the rotation of the lid 2 as shown in FIG. 32 also moves upward along an arc centered on the main thin hinge 31, so that the lower elastic piece
The distance from the base a of the base 321 to the intermediate thin hinge 32 increases against the elasticity of the lower elastic piece 321, and the lower elastic piece 32
1 and the upper elastic piece 322, an intermediate thin hinge 323
The pulling force acts on each other via. With this force, the upper elastic piece 322 warps, and a bending elastic force is generated in the upper elastic piece in a direction to return to the original position. At the same time, elastic deformation is generated in the lower elastic piece 321 to straighten the curve, and a tensile elasticity is generated in a direction in which the elastic deformation returns. The lid 2 is urged by these resiliences, but at the time of FIG. 5, these resiliences still act in a direction to open the lid 2.

When the lid 2 is further rotated from the state shown in FIG. 5 in the lid closing direction against their elasticity, the lower elastic piece 32 is rotated.
When 1 passes near the main thin hinge 31, that is, as shown in FIG. 6, the base a of the lower elastic piece 321 and the main thin hinge 31 and the intermediate thin hinge 32 are aligned on a straight line. At this point, the warpage of the upper elastic piece 322 and the elastic deformation of the lower elastic piece 321 in the straightened state become maximum, and the elasticity generated in both becomes maximum. As shown in FIG. 6, this idea is preferably at a position where the lid 2 is rotated 90 degrees from the closed state.

When the cover 2 is rotated in the cover closing direction beyond the state shown in FIG. 6, as shown in FIG.
2 and the elastic deformation of the lower elastic piece 321 in the straight direction are slightly reduced, and the elasticity generated in both is slightly reduced. However, these elasticities act in the direction of closing the lid 2. Thereafter, the lid 2 is automatically rotated in the lid closing direction by these elastic forces.

When the lid 2 is closed, as shown in FIG.
The upper elastic piece 322 is restored, but the upper elastic piece still acts as a tension member for the lower elastic piece 321, and the lower elastic piece 321 is continuously elastically deformed and generates a tensile elasticity. With this elasticity, the lid 2 is urged in the direction of closing the lid, and the state of closing the lid is secured.

When the lid 2 is rotated in the opening direction from the closed state, the above-described reverse action occurs, and the lid 2 is rotated against the elasticity of the elastic pieces 321 and 322 up to the above-mentioned point in FIG. If
After that, the elasticity of the two elastic pieces 321 and 322 acts in the opening direction, and the lid 2 automatically rotates in the opening direction by the elasticity, and returns to the opening state of FIG. The state is maintained.

[0016]

According to the present invention, the main body such as the cap and the lid are positioned slightly forward of the main thin hinge beside the main thin hinge connecting the rear edges of the main body such as the cap and the lid. The reversing spring plate interposed between the elastic piece that rises from the lower portion of the main thin hinge in the body such as the cap and the elastic piece that hangs down from the upper portion of the main thin hinge in the lid. It is formed by being connected via an intermediate thin hinge biased to one side above or below the main thin hinge, one elastic piece on the biased side has bending elasticity, and the other elastic piece on the other side. Since the elastic piece is provided with the elasticity of bending by bending, the lid can be easily opened and closed by the intermediate thin hinge of the reversing spring plate, despite the presence of the reversing spring plate, In addition, the reversing spring plate has two different bullets. Deformation is obtained, and the range of elastic deformation can be reduced, and strong elasticity of tension accompanying these elastic deformations can be generated, so that a wide range of operation without hindrance to the lid is possible And the use can be greatly expanded. The structure and production are very advantageous in combination with being simple and inexpensive to provide.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a reversible hinge mechanism according to the present invention in an open state;

FIG. 2 is a side view of the opening state of the same example.

FIG. 3 is a perspective view of the same example of opening the cover;

FIG. 4 is an enlarged side view of a main part of a first stage showing an operation state of the same example.

FIG. 5 is an enlarged side view of a main part of a second stage showing an operation state of the same example.

FIG. 6 is an enlarged side view of a main part of a third stage showing an operation state of the same example.

FIG. 7 is an enlarged side view of a main part of a fourth stage showing an operation state of the same example.

FIG. 8 is an enlarged side view of a main part of a fifth stage showing an operation state of the same example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Pour cap main body 2 ... Lid body 3 ... Elastic reversing type hinge mechanism 31 ... Main thin hinge 32 ... Reversing spring plate 321 ... Lower elastic piece 322 ... Upper elastic piece 323 ... Middle thin hinge

Claims (2)

(57) [Claims] 1. A main thin hinge is interposed at each rear edge between a main body such as a cap and a cap-like lid which is openably closable on the main body. The reversing spring plate is located slightly forward of the main thin hinge and an inverting spring plate is interposed therebetween. The lid is connected to the elastic piece that has been drooped sufficiently from above the main thin hinge via the intermediate thin hinge,
In addition, the intermediate thin hinge is formed so as to be deviated to one side above or below the main thin hinge, and one elastic piece on the deviated side has bending elasticity, and the other elastic piece on the other side. An elastic reversal type hinge mechanism characterized in that the piece is given bending elasticity by bending. 2. A main thin hinge 31 is interposed between the pouring cap main body 1 and a cap-like lid 2 which is openably closable on the main body at the center of each trailing edge. On both sides of the hinge, the reversing spring plate 32 is interposed at a position slightly ahead of the main thin hinge, and these reversing spring plates are
The lower elastic piece 321 raised from below the main thin hinge 31 sufficiently in the pouring cap main body 1 and the upper elastic piece 322 lowered from the main thin hinge 31 sufficiently above the lid 2 in the lid 2. Are connected to each other via an intermediate thin hinge 323, and the intermediate thin hinge 323 is formed so as to be deviated above the main thin hinge 31.Furthermore, the upper elastic piece 322 has bending elasticity. An elastic reversing hinge mechanism characterized in that the lower elastic piece 321 is provided with bending elasticity by bending forward and is integrally formed with the lid 2 being opened.