JPS6313179Y2 - - Google Patents

Description

[Detailed description of the invention] This invention mainly relates to the improvement of lids for food containers for storing various foods.

Conventional food container lids are formed so that only a fitting groove is provided downward on the peripheral edge of a square-shaped lid plate, and when the lid is closed, the groove is in close contact with the upper flange of the container body. They were fitted in such a way that they were fitted externally. However, since the groove of the lid plate and the flange of the container body come into complete surface contact when the lid is closed, air circulation between them is poor, making it difficult to perform a peeling operation when opening the lid. Further, the strength of the four corners of the groove of the cover plate is weak, and drawing of the four corners of the groove is troublesome.

This invention was devised in order to eliminate the above-mentioned drawbacks, and a groove with a downward U-shaped cross section is provided on the entire periphery of the rectangular lid plate, projecting upward, and the left and right ends of the front and rear grooves are On the inside, a plurality of bulges are arranged at appropriate intervals so that gaps are formed between them and the stepped part on the upper part of the circumferential wall of the container body when the lid is closed, and on the outer lower edge of the groove, A fitting part that fits into the flange of the container body when the lid is closed is provided so as to protrude to the front, back, left, and right sides, and the outer lower edge of this fitting part has a rim piece that gradually warps outward as it goes downward. By providing several protrusions in parallel in the longitudinal direction at appropriate intervals on the four corners of this edge piece, air circulation between the groove of the lid plate and the flange piece of the container body is achieved when the lid is closed. to make the peeling operation at the time of opening the lid very easy, and also to make it easy to draw the four corners of the edge piece.
Furthermore, the present invention provides a lid for a food container that has good stability in a closed state.

An embodiment of this invention will be described below with reference to the drawings.

As shown in the figure, the lid A of this invention has a groove 2 having a downward U-shaped cross section projecting upward on the peripheral edge of a rectangular lid plate 1, and inside the left and right ends of the front and rear grooves 2. Several bulges 3 are arranged at appropriate intervals so that a gap H is formed between them and a step (described later) on the upper part of the peripheral wall of the container body when the lid is closed. Further, on the outer lower edge of the groove portion 2, a fitting portion 4 having a substantially O-shaped cross section is provided to protrude from the front, back, left, and right sides to fit into the flange piece of the container body when the lid is closed. Furthermore, on the outer lower edge of the fitting part 4,
An edge piece 5 is provided that protrudes gradually outward as it goes downward, and several protrusions 6 are provided at four corners of this edge piece 5 in parallel in the longitudinal direction at appropriate intervals so as to protrude outward. It was formed in

Three of the protrusions 6 are provided at each of two diagonally opposing corners of one edge piece 5, and four protrusions are provided at each of the other two diagonally opposing corners of the edge piece 5. Although the number is not limited in any way, it may be changed as appropriate depending on the size of the radius of curvature of the corner of the edge piece 5.

Further, the bulging portions 3 are illustrated as being arranged at appropriate intervals, two each, inside the groove 2 on the front edge side and the groove 2 on the rear edge side of the cover plate 1, but the number of bulges 3 is However, it is not limited to this, and they can also be provided inside the grooves 2 on the left and right edges of the lid plate 1 at appropriate intervals.

Reference numeral B denotes a container body mainly used for the lid A of this invention, and this container body B has a front end with a collar piece 11 projecting outward from the upper periphery, as shown in FIGS. 2 and 4. It consists of a peripheral wall 12 such as a wall, a rear wall, a left side wall, a right side wall, etc., and a bottom wall connected to the lower peripheral edge of this peripheral wall 12, and the upper part of the peripheral wall 12 has a stepped portion 13 having an inward L-shaped cross section. It is formed to provide.

Incidentally, as shown in FIG. 3, 14 is an inner lid that is interposed between the lid A and the container body B as necessary when the lid is closed.

Since the lid A of this invention is constructed as described above,
When closing the lid of the container body B, as shown in FIGS. 2 to 4, by fitting the fitting part 4 provided on the outer lower edge of the groove part 2 to the flange piece 11 of the container body B, the front and back can be closed. Since a gap H is formed between each of the bulging parts 3 arranged at appropriate intervals inside the left and right ends of the side groove part 2 and the step part 13 on the upper part of the peripheral wall 12 of the container body B, the lid plate 1 is Air circulation between the groove 2 at the peripheral edge and the container body B is improved, and the peeling operation when opening the lid is extremely easy. In addition, the groove portion 2 and the fitting portion 4
Since this also serves as reinforcement, the peripheral edge of the lid plate 1 is extremely strong.

In addition, several protrusions 6 are provided at appropriate intervals in parallel in the longitudinal direction at the four corners of an edge piece 5 that is protruded from the outer lower edge of the fitting part 4 and gradually warped outward as it goes downward. By this, when the lid is closed, the flange piece 11 of the container body B
When the fitting portion 4 is fitted into the lid, the protrusions 6 at the four corners of the edge piece 5 serve to prevent the lid from slipping out, so that the stability of the lid closed state is extremely good. In addition, each protrusion 6 can significantly strengthen the four corners that tend to become thin when drawing the edge piece 5, and the four corners of the edge piece 5 can be easily drawn. have.

As explained above, according to this invention, the peeling operation when opening the lid can be performed extremely easily, the stability of the closed lid state is extremely good, and the edge piece
Various effects can be obtained, such as easy drawing of the corners, and furthermore, the peripheral edge of the lid plate including the four corners of the edge piece is extremely strong.

[Brief explanation of drawings]

The drawing shows one embodiment of this invention.
The figure is a bottom view of the lid of this invention, Figures 2 to 4 show how it is used with the container body, Figure 2 is a sectional view taken along the line of arrow X-X in Figure 1, and Figure 3 is a Sectional view taken along the Y-Y arrow line in FIG. 1 through the inner lid, No. 4
The figure is a sectional view taken along the Z-Z arrow line in FIG. 1. A...Lid, B...Container body, H...Gap, 1...
...Lid plate, 2... Groove, 3... Swelling part, 4... Fitting part, 5... Edge piece, 6... Protrusion, 11... Flange piece, 1
2...Peripheral wall, 13...Step part, 14...Inner lid.

Claims (1)

[Scope of utility model registration request] A groove with a downward U-shaped cross section is provided on the entire circumference of the rectangular lid plate, and the inside of the left and right ends of the front and rear grooves are connected to the step on the upper part of the peripheral wall of the container body when the lid is closed. A plurality of bulges are arranged at appropriate intervals so that gaps are formed between them, and a fitting part that fits into the flange of the container body when the lid is closed is placed on the outer lower edge of the groove. The outer lower edge of this fitting part is provided with a protruding edge piece that gradually warps outward as it goes downward, and several protrusions are provided at the four corners of this edge piece. A lid for a food container, characterized in that the lids are arranged in parallel in the longitudinal direction at appropriate intervals.