JPH0343131Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field of the Invention> This invention relates to a hook structure for a synthetic resin container and a rotatable lid when the lid is closed.

<Problems to be solved by this invention> This type of structure is disclosed in Japanese Patent Application Laid-open No. 78284/1984, but this publication has an oval-shaped convex portion provided on the lid side, and the longer diameter side is connected to the container. Because the inner diameter of the convex part is larger than the inner diameter of the concave part, only the center part of the convex part enters the concave part when press-fitting, and both longer diameter sides are crushed by the entrance of the concave part, making it easy to fit. The problem is that it is not. There is also the problem that if the uneven portions are even slightly misaligned, they will not fit. The present invention attempts to solve such problems.

<Structure of the device> This device has a hook structure between the container and the lid when the lid is closed, and includes a horizontally long recess that is elliptical or rectangular in plan view on the upper surface of the container, and A convex portion having a diameter slightly wider than the short side width of the concave portion and having a tapered inclined surface at the tip and having a perfect circular shape in plan view is formed at a position corresponding to the concave portion. This is due to the hooking structure of the container and the lid when the lid is closed.

<Example> As shown in FIG. 1, a container 1 made of synthetic resin has a connecting short piece on one side, and connects a lid body 2 so that the lid can be closed and opened. side wall 8 of container 1
An oblong recess 5 with a bottom 4 having an elliptical shape 5a or a rectangular shape 5b in plan view is provided on the upper surface 3 on the non-connecting side. A convex portion 7 is formed on the upper surface 10 of the opposite side wall 9 of the lid body 2 in a true cylindrical shape having a diameter slightly wider than the short side width of the recess 5 and having a tapered inclined surface 6a at the tip. Incidentally, reference numerals 11 and 11' denote shape-retaining protrusions that fit the container and the lid against each other at the center when the lid is closed.

With the above configuration, when the lid body 2 is folded down based on the connecting short piece and closed, the convex portion 7 faces the concave portion 5. Next, when the convex part 7 is pushed toward the concave part 5 side, the convex part 7 slightly expands the short width side surfaces 5c and 5d of the concave part 5 with the tapered inclined surface 6a, enters into the concave part 5, and opens the base under the inclined surface 6a. At this point, the recess 5 is fitted and latched with the recess 5 slightly expanded. That is, the convex portion 7 enters a portion of the horizontally long concave portion 5 and is engaged therein.

When opening the lid, pull the container and lid apart by pinching the edges of each to separate them. Since the concavo-convex portions 5 and 7 are engaged not on the entire surface but on one opposing surface, they can be easily removed and the lid can be opened. Note that a plurality of sets of two or more convex and concave portions 5 and 7 may be provided.

<Effects of the invention> As described above, the present invention provides a container with an oblong recess, and a lid with a perfectly circular convex portion slightly larger than the short width side of the recess and a tapered tip. Therefore, due to its perfect circular shape, the convex portion can quickly and reliably fit into the concave portion without losing its shape. Further, even if some positional deviation occurs when closing the lid, the horizontal length of the recessed portion ensures that the protruding portion is fitted and latched.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the container and the lid in an open state, Fig. 2 is an enlarged cross-sectional view of the protrusion, and Fig. 3 shows the fitted state of the elliptical recess and the circular protrusion. FIG. 4 is a plan view showing a state in which a rectangular recess and a perfectly circular convex portion are fitted together. 1 is a container, 2 is a lid body, 3 and 10 are a top surface, 4 is a bottom, 5 is a recessed part, 6 is a top plate, 6a is a tapered slope, 7
is a convex portion, 8 is a side wall of the container, 9 is a side wall of a lid body, 1
Reference numerals 1 and 11' indicate shape-retaining protuberances.

Claims (1)

[Scope of utility model registration request] A hook structure for a synthetic resin container and a rotatable lid when the lid is closed, wherein an oblong recess that is elliptical or rectangular in plan view is provided on the upper surface of the container, and the recess on the other lid is A convex portion having a diameter slightly wider than the width of the short side of the concave portion and having a tapered sloped surface at the tip and having a perfect circular shape in plan view is formed at a position corresponding to the concave portion. The hook structure when the container and lid are closed.