JP3229436B2 - Hinge device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge device, and more particularly, to a hinge device which is integrally formed of, for example, a flexible synthetic resin on a lid and a base which are openable and closable, and connects the two so that they can be opened and closed. .

[0002]

2. Description of the Related Art In general, a container, such as a shampoo container, which discharges an appropriate amount of contents has been used by attaching an opening / closing lid to a mouthpiece of a container body. Usually, this opening / closing lid includes a base and a lid, and the base and the lid are connected to each other by a hinge integrally formed of a flexible synthetic resin.

FIG. 5 shows such a conventional opening / closing lid, and its structure will be briefly described. The cylindrical base 1 having a cylindrical shape and having a threaded portion formed on an inner periphery thereof is formed by a cylindrical portion of a container A. And screwed on. The mating surfaces 1a, 2a of the base 1 and the lid 2 are formed so as to be capable of being brought into close contact with each other in shape, and furthermore, are configured so that they can be detachably locked by irregularities formed on both sides. ing.

[0004] By the way, at least 180
Since an opening angle of a degree is required, the hinge 3 is required to be considerably flexible. For this reason, the whole was made into a thin band-shaped thing, and it was comprised so that a smooth opening / closing operation | movement may be performed.

[0005]

However, in the prior art as described above, the thin band-shaped hinge 3 can be opened and closed smoothly, but the strength is reduced due to the long hinge length. There was a problem. In addition, when the length of the hinge is long, it is also difficult to maintain the dimensional accuracy, and when the lid 2 is to be closed to the base 1, a slight displacement occurs between the hinge and the base 1. There was also a problem that the closure to the base 1 would be malfunctioning.

Further, a stress is repeatedly applied to the hinge 3, and the bending stress at this time is not dispersed throughout the hinge, but is a specific portion which is easily bent, that is, a portion where the middle portion in the longitudinal direction of the arcuate hinge plate is mainly bent. In the worst case, this part may be broken by fatigue.

In particular, in a so-called three-point hinge, stress is constantly applied to the hinge by a separately provided leaf spring, so that the hinge is easily deformed, and improvement has been desired. An object of the present invention is to solve such a conventional problem, and to provide a hinge device which can maintain dimensional accuracy for a long period of time without stress being concentrated on a specific portion and which operates smoothly. Is to do.

[0008]

The present invention has solved the above-mentioned technical problem by the following constitution. That is, the present invention is based on a hinge device that connects one end to the side surface of the lid and the other end to the side surface of the base, and supports and connects the lid to the upper surface of the base so as to be openable and closable. The hinge device of the present invention is made of a flexible synthetic resin, is formed in a plate shape, and has a lateral S-shaped side shape when the lid and the base are in an open angle state of 180 degrees. The intermediate portion predetermined length range of each end portion connected to the lid and the base portion is formed with a thin portion, the bent portion on the other end portion is connected to the upper end of the base peripheral wall, and the one end portion side Is connected to the peripheral wall of the lid below a connecting portion between the bent portion and the upper end of the peripheral wall of the base.

In the hinge device according to the present invention, each of the ends of the horizontal S-shaped plate-like portion constituting the hinge device is provided when the lid and the base are in an open angle state of 180 degrees. And the lid is connected such that the mating surface of the lid is located below the mating surface of the base.

[0010]

According to the hinge device of the present invention, when the lid is at an open angle of 180 degrees with respect to the base, the hinge device is in the horizontal S position.
It is shaped like a letter and therefore has two bends. When the lid connected to the base is rotated by the hinge device having such a shape and the lid is closed on the mating surface of the base to be closed, two of the corrugated plate portions constituting the hinge device are used. The bent portion bends and the thin portion between the two bent portions also curves to assist in moving the lid.

That is, in the case of this hinge device, the virtual fulcrum of rotation at the time of opening / closing the lid moves not at a substantially fixed position on the hinge as in the prior art, but with the opening / closing operation of the lid. . In other words, instead of the plate-like portion constituting the hinge device being repeatedly bent at a specific location, bending stress acts on the entire plate-like portion in a distributed manner.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a hinge device according to the present invention. FIG. 1 shows a hinge device 10 according to a position embodiment of the present invention. The hinge device 10 according to one embodiment of the present invention is for a case where the hinge device is used for an opening / closing lid that is screwed into a mouthpiece of a container. Therefore, in the hinge device 10, the cylindrical base 1 and the lid 2 constituting the opening / closing lid are connected to be openable and closable.

The hinge device 10 is made of a flexible synthetic resin and is formed integrally with the base 1 and the lid 2. As is apparent from FIG. 1, the hinge device 10 is formed of a plate-like portion having a corrugated side surface when the lid 2 and the base 1 are in an open angle state of 180 degrees. A predetermined length between the ends 11a and 11b of the hinge device 10 connected to the side edges of the lid 2 and the base 1, respectively, is formed as a thin portion 12 having a reduced thickness.

Here, the fact that the plate member constituting the hinge device 10 is "horizontal S-shaped" will be further described with reference to an enlarged view of FIG. When the hinge device 10 is in the open angle state, the side surface shape of the hinge device 10 is just a horizontal S-shape, and therefore, two inflection portions on the upper side and the lower side (the inflection portions become bending portions when viewed from the viewpoint of operation). So
(Hereinafter referred to as a bent portion) 13, 14. The thin portion 12 is formed between the two bent portions 13 and 14.

Next, the hinge device 10 according to this embodiment will be described.
Will be described. However, for convenience of explanation, the operation from the state when the lid 2 is at an opening angle of 180 degrees with respect to the base 1 shown in FIG. 1 will be described. When the lid 2 is to be closed, as shown in FIG.
Is rotated while the bent portion 14 bends first to lift the entire lid 2.

Then, when the bending of the bent portion 14 reaches the limit point, the bending of the thin portion 12 and the bending of the bent portion 13 start at the same time, and finally reach the shape shown in FIG. The lid 2 is overlaid on the base 1. Therefore, the hinge device 10 does not repeatedly bend at only one specific position as in the related art, but the bending point, that is, the point of action of the bending stress, extends over almost the entire range from one end to the other end of the hinge device 10. In other words, the bending stress acts in a distributed manner throughout.

As described above, according to the hinge device 10, the hinge device 10 is formed of a corrugated plate, and has two bent portions 13,
By forming the space between the thin portions 12, the opening / closing operation is smooth and there is no concentration of stress in a specific portion. Therefore, even if the opening / closing operation is repeated, the durability is excellent and the life can be extended.

By the way, the stress dispersing operation of the hinge device 10 becomes more remarkable when the following structure is adopted. That is, each end 11a of the hinge device 10,
11b, when the lid 2 and the base 1 are in an open angle state of 180 degrees, the mating surface 1a of the base 1 and the mating surface 2a of the lid 2 are not on the same plane as shown in FIG. The two mating surfaces 2a are connected to the respective side surfaces so as to have a positional relationship that causes a step h such that the two mating surfaces 2a exist below the mating surface 1a of the base 1.

The reason for adopting such a configuration is that when the lid 2 is superimposed on the mating surface 1a of the base 1, it is necessary to lift the entire lid 2 upward as shown in FIG.
As a result, in the initial stage of the rotation, the bent portion indicated by the reference numeral 14 functions more remarkably as a fulcrum.

As described above, since the hinge device 10 of the present embodiment can achieve both excellent strength and necessary flexibility, it can be deformed even when applied to, for example, a three-point hinge to which stress is constantly applied. However, the dimensional accuracy can be maintained for a long time. In addition, the hinge device 10
Since the bent portions are dispersed as described above, breakage or the like due to fatigue is unlikely to occur as in the related art, and as a result, the durability can be greatly improved.

[0021]

As described above, according to the hinge device of the present invention, a horizontal S-shaped plate is formed, two bent portions are vertically arranged, and a thin portion is formed between the bent portions. By doing so, the stress is dispersed, the durability is excellent, and the life is long.

Further, a lateral S in which two bent portions are arranged vertically.
By adopting the character-shaped hinge structure, since the distance of the bent portion is short, operation accuracy comparable to that of the shaft hinge is obtained, and the opening and closing operation can be performed smoothly for a long period of time.

[Brief description of the drawings]

FIG. 1 is a side view showing a hinge device according to an embodiment of the present invention formed on a cylindrical base portion and a lid screwed to a mouth portion of a container.

FIG. 2 is a partially enlarged side view of the hinge device shown in FIG. 1;

FIG. 3 is a side view showing an operation state of the hinge device according to the embodiment of the present invention shown in FIG. 1;

FIG. 4 is a side view showing a state of the hinge device when the lid connected to the base is closed in the hinge device of the embodiment shown in FIG. 1;

FIG. 5 is a perspective view showing a conventional hinge device for connecting a lid to a base screwed to a mouthpiece of a container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base part 2 Lid body 10 Hinge device 11a One end part 11b Other end part 12 Thin part 13 Bending part 14 Bending part

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65D 47/08 B65D 43/16

Claims (2)

(57) [Claims] 1. One end (11a) is connected to the side surface of the lid (2) and the other end (11b) is connected to the side surface of the base (1), and the lid (2) is connected to the upper surface of the base (1). In the hinge device (10) that is supported and connected to be openable and closable, the hinge device (10) is made of a flexible synthetic resin and is formed in a plate shape, and the lid (2) and the base (1) are connected to each other by 180. When the hinge device (10) is in the open angle state, the side shape of the hinge device (10) has a horizontal S-shape, and the both end portions (11a, 11a, A predetermined length range of the middle portion of 11b) is formed in the thin portion (12), the bent portion (14) on the other end (11b) side is connected to the upper end of the peripheral wall of the base (1), and the one end (11a) ) Side bend (13)
Is connected to the peripheral wall of the lid (2) below a connecting portion between the bent portion (14) and the upper end of the peripheral wall of the base (1). 2. The lid according to claim 1, wherein each of the ends (11a, 11b) of the hinge device (10) has a 180-degree open angle between the lid (2) and the base (1). The hinge device according to claim 2, wherein the connection is such that the mating surface of (2) is located below the mating surface of the base (1).