JPH01116157U - - Google Patents

Description

[Brief explanation of the drawing]

1 to 3 are views showing an embodiment of the first means of the present invention, in which FIG. 1 is a longitudinal sectional view thereof, and FIG. 2 is a sectional view showing the engaged state of the engaging piece, FIG. 3 is a plan view of the container mouth barrel. 4 and 5 are views showing the second means, FIG. 4 being a longitudinal sectional view thereof, and FIG. 5 being a sectional view showing the engaged state of the engaging piece. FIG. 6 is a longitudinal sectional view showing another embodiment. FIGS. 7 and 8 are diagrams showing conventional examples. 1... Container mouth barrel, 2... Concave groove, 3... Cap, 4
...Engaging piece, 5... Hole, 5a, 5b... Hole inner wall, 7... Thin wall part, 7a... Flexible part, 7b... Hinge part 7b.

Claims (1)

[Claims for Utility Model Registration] (1) A plurality of concave grooves 2 are arranged in an annular manner in the container opening barrel 1, and the cap 3 to be screwed onto the container opening barrel 1 is provided with the An engaging piece 4 that engages in the groove 2 is provided, and this engaging piece 4 is integrally molded with the cap 3 from synthetic resin and has flexibility itself, so that when the cap 3 is tightened, the engaging piece 4 3. A container cap with a loosening prevention mechanism, characterized in that the container cap is formed so as to be engaged in the groove 2 while fluttering in a direction opposite to the tightening direction 3. (2) A plurality of concave grooves 2 are annularly arranged in the container mouth tube 1, and the cap 3 to be screwed onto the container mouth tube 1 is engaged in the grooves 2 when screwing is tightened. An engaging piece 4 is provided, and this engaging piece 4 is made of synthetic resin and integrally molded with the cap 3, and penetrates the inside and outside of the cap 3 through a hole 5 provided in the cap 3, and also extends around the middle portion. is integrally connected to the cap 3 at a thin wall portion 7, and the hole 5 is closed by this thin wall portion 7. Further, the engaging piece 4 is connected to the cap 3 within the hole 5 by this thin wall portion 7. The gap between the hole inner wall 5a on the tightening direction side of the cap 3 and the engagement piece 4 is wide when viewed from the engagement piece 4, and the thin part 7 between them is On the other hand, the gap between the engagement piece 4 and the hole inner wall 5b on the side opposite to the tightening direction of the cap 3 is narrow, and the thin wall part 7 therebetween is formed as a hinge part 7b. Then, when the engaging piece 4 is rotated around the hinge portion 7b, the engaging piece 4 can be tilted in the direction opposite to the direction in which the cap 3 is tightened; On the opposite side to the direction in which the cap 3 is removed, the engaging piece 4 on the outer side of the cap 3 than the hinge portion 7b is formed so as to abut against the inner wall 5b of the hole, thereby preventing rotation and preventing it from tilting in that direction. A container cap with a loosening prevention mechanism, characterized in that the hinge part 7b is made crushable so that the hinge part 7b is crushed when the cap 3 is removed.