JPH10129697A - Snap hinge cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the feel of use, make appearance satisfactory, and make the flow of a melted material smooth in an injection molding process, by providing, in a position where an elastic connecting plate continues to a hinge, a projecting rib formed so that its hinge side has a cross-section which is almost the same as the edge of it and its other side converges toward the outside of the elastic connecting plate. SOLUTION: A cap main body 2 and a lid 3 are formed so as to have circular cross-sections, they are turnably connected with each other at one end each by means of a hinge 4, and also it is urged by elastic connecting plates 5 disposed on both right and left sides of the hinge 4. In each of projecting ribs 5a formed on the outsides of the elastic connecting plates 5 and in positions continuing to the hinge 4, the face which is opposite the triangular edge 4a of the hinge 4 has the shape which is almost the same as the triangular edge 4a, and also the rib is convergently formed in the circumferential direction of a snap hinge cap 1. This prevents the exposure of the triangular edges 4a and prevents fingers from touching the triangular edges 4a even when the snap hinge cap 1 is grasped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snap hinge cap to be attached to a mouth of a bottle, a tube, or the like, and more particularly to an easy handling.

[0002]

2. Description of the Related Art In many cases, a snap hinge cap is attached to the mouth of a tube filled with a gel-like fluid or a bottle filled with a powdery material, such as a tube of cosmetic cream or a bottle of salt. Can be

[0003] These snap hinge caps are composed of a cap body provided with a single or a plurality of holes on an upper surface attached to a tube or the like, and a lid for opening and closing the cap body. The lid and the cap body are connected by a hinge part, which has the advantage that they can be opened and closed in one operation.

Further, by providing an elastic connecting plate connected to the cap body and the lid so as to be provided alongside the hinge portion, the lid can be urged to open or close with respect to the cap body. (Snap structure). That is, by providing the pivot of the hinge portion outside the straight line connecting both ends of the elastic connecting plate, the distance between both ends of the elastic connecting plate once becomes longer when the lid rotates, and by further rotating Get closer again. Here, when the elastic connecting plate is contracted by elasticity, it is possible to urge the lid in a direction to open or close the lid.

[0005] Usually, the cap body, the lid, the hinge, the elastic connecting plate and the like are all integrally formed by injection molding or the like.

[0006]

In order for the snap hinge cap to have a snap function as described above, the center of rotation of the hinge portion must be located outside the elastic connecting plate. Also, since the hinge portion must be straight to be bent, and in many cases, the snap hinge cap is formed in a substantially cylindrical shape, so that both ends of the hinge portion have side faces that are slightly raised from the snap hinge cap,
That is, an edge portion is formed.

By exposing the corner of the edge portion,
There is a problem that a finger touches it during use, resulting in poor tactile sensation and a rough appearance.

[0008]

In order to solve the above-mentioned problems, a snap hinge cap according to the present invention is provided with a cap body which is attached to a mouth of a container and has a hole on an upper surface, and which is integrated with the cap body and can be opened and closed. A lid that is attached and closes the hole, a hinge portion that is disposed on the same plane and outside the boundary surface between the cap and the lid and rotatably connects the cap and the lid, An edge portion formed at both ends of the hinge portion, and a snap hinge cap including elastic connecting plates disposed on both left and right sides of the hinge portion, wherein the elastic connecting plate is located at a position continuous with the hinge portion. The hinge part has a cross section substantially equal to the edge part, and a convex rib formed so as to converge on the opposite side toward the outer surface of the elastic connecting plate is provided.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a snap hinge cap according to the present invention will be described in detail with reference to the drawings. 1 is a perspective view of the snap hinge cap according to the present embodiment, FIG. 2 is a rear side view, FIG. 3 is a top view, FIG. 4 is a sectional view taken along the line AA shown in FIG. 3, and FIG. FIG. 6 is a sectional view taken along the line BB shown in FIG.

As shown in FIGS. 1 and 2, the snap hinge cap 1 is roughly divided into a cap body 2 attached to a tube or a bottle (not shown), and a lid configured to open and close the upper surface of the cap body 2. It consists of body 3. The cap body 2 and the lid 3 are formed in a circular cross section as shown in FIG. 3, and are rotatably connected at one end by a hinge part 4, and elastically disposed on both left and right sides of the hinge part 4. It is urged by the connecting plate 5. These are all integrally formed by injection molding.

As shown in FIGS. 1 and 4, the cap body 2 is a top-end cylindrical member having a top surface 2a and a side surface 2b, and has a locking portion 2c having an internal thread formed on the inner surface. It is configured so that it can be attached to a tube or the like (not shown).
A spout 2d is provided on the top surface 2a at a position communicating with the inside of the locking portion 2c.
Can be poured out of the spout 2d while the tube is fitted. In addition, a concave portion 2e is formed in an upper portion of the side surface 2b on the opposite side to a hinge portion 4 described later, so that the end of the lid 3 can be easily hooked.

The lid 3 has a top surface 3a similar to the cap body 2.
And a side cylindrical member 3b, and a plug 3c is erected downward inside the cylindrical member. The plug 3c is disposed at a position corresponding to the spout 2d, and is formed so that the outer surface shape of the plug 3c and the inner surface shape of the spout 2d are substantially equal. Therefore, when the upper surface of the cap body 2 is closed by the lid 3, the stopper 3c is
d and can be closed and sealed.

As shown in FIGS. 1 to 3, the cap body 2 and the lid 3 are connected by a hinge 4 formed at one end. The hinge portion 4 is located on the extension and outside of the boundary surface between the cap body 2 and the lid 3, and is formed to protrude in a triangular cross section. The tip of the hinge portion 4 forms a straight line parallel to the tangent line of the cap body 2 to the lid 3, and at both ends, a triangular cross section is exposed to form a triangular edge 4a as an edge portion. By bending the hinge portion 4, the lid 3 can rotate with respect to the cap body 2.

On both left and right sides of the hinge 4, elastic connecting plates 5 are provided. The elastic connecting plate 5 is a member formed in a substantially plate shape by providing a gap on the back side and both side sides, and has upper and lower ends connected to the cap body 2 and the lid 3.

A convex rib 5a is formed outside the elastic connecting plate 5 at a position continuous with the hinge portion 4. The convex rib 5a forms the surface of the hinge portion 4 facing the triangular edge 4a into a shape substantially equal to the triangular edge 4a,
The snap hinge cap 1 is formed so as to converge along the circumferential direction. As a result, the triangular edge 4a is not exposed, and the finger does not touch the triangular edge 4a even when the snap hinge cap 1 is gripped.

Since the hinge portion 4 which is the center of rotation of the elastic connecting plate 5 is arranged outside, the elastic connecting plate 5 is rotated when the lid 3 is rotated so as to be opened from the cap body 2. The distance between both ends gradually increases. The lid 3 is further rotated so that the elastic connecting plate 5 is
, The distance between both ends of the elastic connecting plate 5 gradually decreases.

Accordingly, since the elastic force acts in the direction in which the elastic connecting plate 5 contracts, when the elastic connecting plate 5 is located inside the center of rotation of the hinge part 4 in a side view, the lid 3 is closed. The cover 3 is urged in the opening direction when the cover 3 is on the outside.

As shown in FIGS. 5 and 6, when the snap hinge cap 1 is opened and closed, the hinge portion 4 is bent, and the lid 3 is rotated about the hinge portion 4 to open and close. . At this time, the triangular protrusion of the hinge part 4 is opened up and down from the center as shown in FIG.
The convex rib 5 a of the elastic connecting plate 5 is positioned so as to be wound inside the bent elastic connecting plate 5. Thus, even when the convex rib 5a is provided on the outside of the elastic connecting plate 5, it does not hinder the opening and closing of the lid 3.

Since the distance between both ends of the elastic connecting plate 5 at this time is shorter than the original length, the elastic connecting plate 5 generates a reaction force and urges the lid 3 in the closing direction.

In the above embodiment, the snap hinge cap 1 has been described as a substantially cylindrical member. However, the present invention is not limited to this, and the snap hinge cap 1 may be formed into a polygonal pillar such as a square pillar or a hexagonal pillar. It may be formed. In addition, spout 2
Although d is illustrated as a single hole with the edge protruding upward, a plurality of holes may be provided, or a hole having a diameter substantially equal to the inner peripheral surface of the locking portion 2c may be formed.

[0021]

By forming smooth convex ribs so as to be continuous on both the left and right sides of the hinge portion, the finger does not touch the triangular edge portions formed at both ends of the hinge portion when used, thereby improving the usability. be able to. Further, since the triangular edges formed at both ends of the hinge portion are not exposed, the appearance is also good.

By providing a convex rib at substantially the center of the elastic connecting plate, a thick portion is formed substantially at the center of the elastic connecting plate, which is a thin member. Also has the effect of smoothing out.

[Brief description of the drawings]

FIG. 1 is a perspective view of a snap hinge cap according to the present embodiment.

FIG. 2 is a rear side view.

FIG. 3 is a top view.

FIG. 4 is a sectional view taken along the line AA shown in FIG. 3;

FIG. 5 is a top view showing a state where a snap hinge cap is opened.

FIG. 6 is a sectional view taken along line BB shown in FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Snap hinge cap 2 ... Cap main body 2a ... Top surface 2b ... Side surface 2c ... Locking part 2d ... Spout 2e ... Concave part 3 ... Lid 3a ... Top surface 3b ... Side surface 3c ... Plug 4 ... Hinge part 4a ... Triangle edge 5 ... elastic connecting plate 5a ... convex rib

Claims (1)

[Claims] 1. A cap attached to a mouth of a container and having a hole on an upper surface, a lid integrally and movably attached to the cap to close the hole, and a boundary surface between the cap and the lid. A hinge portion which is arranged on the same plane and outside as to rotatably connect the cap body and the lid member, edge portions formed at both ends of the hinge portion, and left and right sides of the hinge portion. A snap hinge cap comprising an elastic connecting plate, wherein the hinge portion side has a cross section substantially equal to the edge portion at a position continuous with the hinge portion of the elastic connecting plate, and the opposite side of the elastic connecting plate has A snap hinge cap provided with a convex rib formed so as to converge toward an outer surface.