JP3640221B2 - Hinge structure - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a hinge structure that connects a main body having an opening and a lid body to be crowned by the main body.
[0002]
[Prior art]
As a means for integrally joining a main body having an opening to a lid for opening and closing the opening, a hinge structure is often used as seen in a compact container or a pouring cap.
[0003]
This is because the opening and closing of the opening of the main body can be easily and reliably achieved with one touch due to the rotational displacement of the lid, and in particular, in the pouring cap used to be assembled to the housing, This is because there is no possibility of losing the lid which achieves substantial opening and closing of the casing.
[0004]
There are means for connecting the main body and the lid body by means of a hinge piece and means for using a hinge structure, but the structure of the main body and the lid body is simplified. The hinge connection by the hinge piece occupies the mainstream from the viewpoints of reduction of assembly man-hours and cost required for manufacturing one product.
[0005]
The coupling between the main body and the lid body by the hinge piece is achieved by integrally providing a hinge piece integrally connected with a thin piece between the projecting tips at the rear end edges of the main body and the lid body, and between the tips of both hinge pieces. A thin piece portion to be connected is bent and deformed to provide a pivot axis for opening and closing the lid body with respect to the main body.
[0006]
Also, a so-called three-point hinge structure is known in which an elastic piece is connected between a main body and a lid body adjacent to the hinge piece in order to self-hold the closed posture and the open posture of the lid body.
[0007]
By the way, the hinge structure has a structure that bends the portion between the connected tips of the hinge pieces. Therefore, in the closed posture of the lid, the portion between the tips bent at the tip of the protruding hinge piece is located. Since both outer ends of the bent portion between the tips are sharp due to the bending deformation, an unpleasant feeling such as damaging a fingertip or the like often occurs during handling.
[0008]
In particular, in the case of a pouring cap assembled and used in a housing containing shampoo or detergent, the housing is often handled with wet hands. At this time, the housing slips and the above-mentioned accident occurs. There were many things.
[0009]
Therefore, a three-point hinge structure as shown in FIG. 6 has been proposed for the purpose of preventing the danger caused by the sharp bent tip corner of the hinge piece. In this three-point hinge structure, the main body 2 and the central portion of the rear end edge of the lid body 8 are connected by a single hinge piece 13 so that the closed position and the open position of the lid body are self-held on both sides of the hinge piece 13. A pair of bellows-like elastic pieces 14 (see FIG. 3) are arranged.
[0010]
In this three-point hinge, the bellows-like elastic piece 14 having no sharp corner portion is positioned on both outer sides of the sharp bent tip corner portion of the hinge piece 13 formed when the lid body 8 is in the closed posture. Thus, it is intended to prevent danger due to the sharp corners of the hinge piece 13.
[0011]
[Problems to be solved by the invention]
However, when the above-described three-point hinge structure is actually implemented, the bellows-like elastic piece 14 is not easily bent and deformed when the lid body 8 is in the closed posture. The size of the elastic piece 14 is larger than expected (see FIG. 4), which causes a problem that the outer edge of the tip of the elastic piece 14 may be caught on the skin or other objects and be damaged.
[0012]
Therefore, the present invention was created to solve the above-described problems in the prior art, and has as a technical problem to eliminate the catch of the elastic piece, and therefore aims to ensure sufficient safety during handling. And
[0013]
[Means for Solving the Problems]
Means of the present invention for solving the above problems
Having a body with an opening;
Having a lid that opens and closes the opening of the body;
Having a hinge piece that rotatably couples the lid to the rear edge of the main body;
To have a bellows-like elastic piece connected between the main body and the lid body, immediately adjacent to both outer sides of the hinge piece, in order to self-hold the closed posture and the open posture of the lid body,
Near the outer sides of the elastic piece of the main body and the lid, in the closed posture of the lid, it is substantially plane-symmetric with respect to the mating surface of the main body and the lid, covers the outer end surface of the elastic piece, and smoothes the surface And having a protective piece projecting from each other,
It is in.
[0014]
It is preferable that the main body is a main body portion of a cap that is tightly assembled to the casing tube.
[0015]
[Action]
When the lid is in the closed position, the elastic pieces project in the vicinity of the outer sides of the hinge pieces projecting backward, covering the outer end surfaces of the hinge pieces, and further, the elastic pieces in close proximity to the outer sides of the elastic pieces. Since the protective piece protrudes in a state where both outer end faces of the elastic piece are covered, the sharp bent tip corner portion of the hinge piece and the bent tip edge portion of the elastic piece are not caught on the skin or other objects.
[0016]
In addition, since the surface of the protective piece is formed smoothly, even if a situation occurs in which the skin or other object is strongly pressed against the protective piece, the protective piece is caught on the pressed skin or other object. There is no danger of scratching.
[0017]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
The illustrated embodiment shows a case in which the present invention is configured as a housing pouring cap 1, and a body 2 screwed and assembled to the outer periphery of the mouth tube of the housing is attached to the upper end of a cylindrical tube wall 3. A configuration in which a top wall 4 is continuously provided, a pouring cylinder 5 is erected at the center of the top wall 4 to form an opening 6, and a pair of notches 7 are formed at the upper end of the rear surface of the cylinder wall 3 It has become.
[0018]
The lid 8 has a top wall 10 connected to the upper end of a short cylindrical wall 9, and a sealed cylinder 11 that is tightly fitted around the pouring cylinder 5 of the main body 2 is suspended from the center of the bottom surface of the top wall 10. And a pair of notches 12 are formed at the lower end of the rear surface of the cylindrical wall 9.
[0019]
The three-point hinge that hinges the main body 2 and the lid body 8 is formed between the notch 7 at the upper end of the rear surface of the cylindrical wall 3 of the main body 2 and the notch 12 at the lower end of the rear surface of the cylindrical wall 9 of the lid body 8. A hinge piece 13 formed between the lower end of the notch 7 and a pair of bellows-shaped elastic pieces 14 formed between the lower end of the notch 12 and the upper end of the notch 12, and the main body 2 and the lid body 8. Protective pieces 15 which are provided in close proximity to both outer sides of the elastic piece 14 so as to cover the entire outer end surface of the elastic piece 14 in a closed posture of the lid body 8 and project in a smooth state. It consists of and.
[0020]
As shown in FIG. 4, the protection pieces 15 provided on the main body 2 side and the lid body 8 side are substantially plane-symmetric with respect to the mating surface of the main body 2 and the lid body 8 when the lid body 8 is closed. By making the sizes of the two protective pieces 15 facing each other substantially equal, the two protective pieces 15 can be easily integrated with each other, and the protruding protective piece 15 can be used to open and close the lid 8. I try not to get in the way.
[0021]
Since the elastic piece 14 in the three-point hinge is formed in the posture shown in FIGS. 1, 2, and 3, the lid body 8 is shown in FIG. 4 from the open posture shown in FIGS. Rotation to the closed position is prevented by its elasticity. For this reason, the lid body 8 in the open position shown in FIGS. 1, 2, and 3 does not rotate and is displaced in the closed position direction due to the paralysis, and the open position is maintained.
[0022]
When the lid 8 is rotated in the closing direction against the elasticity of the elastic piece 14 from this open posture, the elastic piece 14 extends and deforms, exceeds the dead point, and then bends and contracts again, and FIG. The closed posture of the lid 8 shown in FIG.
[0023]
As shown in FIGS. 4 and 5, in the closed state of the dispensing cap 1, the entire outer end surface of each elastic piece 14 is covered with a smooth protective piece 15, so that the protruding end of the elastic piece 14 It is almost impossible for the outer edge to be caught on the skin or other objects, which makes it safe to handle the housing with the dispensing cap 1 assembled.
[0024]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be obtained.
When the lid is in the closed position, the elastic pieces are located in the vicinity of the outer sides of the hinge pieces protruding backward, covering the outer end surfaces of the hinge pieces, and the elastic pieces are in close proximity to the outer sides of the elastic pieces. Since the protective piece with a smooth surface protrudes while covering the entire outer end face of the piece, the sharp bent tip corner of the hinge piece and the bent tip edge of the elastic piece are caught on the skin or other objects. In this way, the combination of the three-point hinged main body and lid can be handled safely.
[0025]
Since the protective piece is provided on both the main body and the lid, it is easy to reliably cover the entire outer end surface of the elastic piece with this protective piece, thereby making it easy to ensure safety during handling.
[0026]
Since the protective piece sized to cover the entire outer end surface of the elastic piece is provided on both the main body and the lid, it is sufficient if the protective piece covers the outer end surface of the elastic piece in a combined state. The size of each protection piece is smaller than that of the elastic piece, which facilitates the integral attachment of the protection piece.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of the present invention in an open state.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
3 is a cross-sectional view taken along line BB in FIG.
4 is an enlarged side view of an essential part showing a closed state of the embodiment shown in FIG. 1. FIG.
FIG. 5 is a rear view showing a closed state of the embodiment shown in FIG. 1;
FIG. 6 is a plan view of an open state showing a conventional example.
[Explanation of symbols]
1; pouring cap 2; main body 3; tube wall 4; top wall 5; pouring tube 6; opening 7; notch 8; lid 9; tube wall 10; top wall 11; Hinge piece 14; elastic piece 15; protective piece

Claims (2)

A main body (2) having an opening (6), a lid (8) for opening and closing the opening (6) of the main body (2), and the lid (8) is connected to a rear edge of the main body (2). A hinge piece (13) that is rotatably coupled to the lid body (8), and the main body (2) immediately adjacent to both outer sides of the hinge piece (13) in order to self-hold the closed and open positions of the lid (8). And a bellows-like elastic piece (14) provided between the main body (2) and the elastic piece (14) of the lid (8), which are connected between the outer piece and the lid (8). With the lid (8) in the closed position, it is substantially plane-symmetric with respect to the mating surface of the main body (2) and the lid (8) , covers the outer end surface of the elastic piece (14) , and has a surface. A hinge structure composed of a protective piece (15) smoothly projecting from each other.   2. The hinge structure according to claim 1, wherein the main body (2) is a main body portion of a cap (1) that is tightly assembled to the casing tube.

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